/* ==========================================================================
   RepeatMe — Design System
   Palette: Sky Blue + Orange Accent + Dark Blue, Poppins typography.
   ========================================================================== */

/* === Design Tokens === */

:root {
    /* Brand palette */
    --color-sky:               #0EA5E9;
    --color-sky-soft:          #E0F2FE;
    --color-sky-tint:          #F0F9FF;
    --color-accent:            #F97316;
    --color-accent-hover:      #EA660D;
    --color-accent-soft:       #FFEDD5;
    --color-dark:              #0C4A6E;
    --color-dark-hover:        #082F4A;
    --color-sand:              #F5E6D3;

    /* Semantic mapping */
    --color-primary:                  var(--color-dark);
    --color-primary-container:        var(--color-sky-tint);
    --color-on-primary:                #FFFFFF;
    --color-primary-fixed:             #DBEAFE;
    --color-primary-fixed-dim:         #BFDBFE;
    --color-on-primary-fixed:          var(--color-dark);
    --color-on-primary-fixed-variant:  var(--color-dark-hover);

    --color-secondary:                 #475569;
    --color-secondary-container:       var(--color-sky-soft);
    --color-on-secondary-container:    var(--color-dark);

    --color-background:                #F8FAFC;
    --color-surface:                   #FFFFFF;
    --color-surface-container-lowest:  #FFFFFF;
    --color-surface-container-low:     #F8FAFC;
    --color-surface-container:         #F1F5F9;
    --color-surface-container-high:    #E2E8F0;
    --color-surface-container-highest: #CBD5E1;
    --color-on-surface:                #0F172A;
    --color-on-surface-variant:        #475569;
    --color-outline:                   #94A3B8;
    --color-outline-variant:           #E2E8F0;

    --color-feedback-correct-bg:       #DCFCE7;
    --color-feedback-correct-text:     #166534;
    --color-feedback-hard-bg:          #FEF3C7;
    --color-feedback-hard-text:        #92400E;
    --color-feedback-wrong-bg:         #FEE2E2;
    --color-feedback-wrong-text:       #991B1B;

    --color-error:                     #DC2626;
    --color-error-container:           #FEE2E2;
    --color-on-error-container:        #991B1B;

    /* Elevation — soft and travel-y */
    --shadow-level1: 0 1px 2px rgba(15, 23, 42, 0.04), 0 1px 3px rgba(15, 23, 42, 0.03);
    --shadow-level2: 0 4px 15px rgba(15, 23, 42, 0.08), 0 2px 6px rgba(15, 23, 42, 0.04);
    --shadow-level3: 0 12px 32px rgba(15, 23, 42, 0.12), 0 4px 12px rgba(15, 23, 42, 0.06);
    --shadow-accent: 0 8px 24px rgba(249, 115, 22, 0.28);

    /* Radii */
    --radius-sm:      6px;
    --radius-default: 8px;
    --radius-md:      12px;
    --radius-lg:      16px;
    --radius-xl:      24px;
    --radius-full:    9999px;

    /* Typography */
    --font-family:         'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-family-content: 'Source Serif 4', Georgia, 'Times New Roman', serif;

    /* Layout */
    --container-narrow: 760px;
    --container-wide:   1080px;
    --space-section:    clamp(2.5rem, 5vw, 4.5rem);

    /* Motion */
    --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
    --duration-fast: 160ms;
    --duration-base: 240ms;
    --duration-slow: 420ms;
}

/* === Reset === */

*,
*::before,
*::after {
    box-sizing: border-box;
}

* {
    margin: 0;
    padding: 0;
}

html {
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-on-surface);
    background: var(--color-background);
    background-image:
        radial-gradient(ellipse 80% 50% at 50% -10%, var(--color-sky-tint) 0%, transparent 60%),
        linear-gradient(180deg, #FFFFFF 0%, var(--color-background) 320px);
    background-attachment: fixed;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body.modal-open {
    overflow: hidden;
}

main {
    width: 100%;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family);
    color: var(--color-dark);
    line-height: 1.25;
    letter-spacing: -0.02em;
    font-weight: 700;
}

a { color: var(--color-sky); text-decoration: none; transition: color var(--duration-fast) var(--ease-out); }
a:hover { color: var(--color-dark); }

::selection { background: var(--color-sky-soft); color: var(--color-dark); }

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* === Layout containers === */

.page-container {
    max-width: var(--container-narrow);
    margin: 0 auto;
    padding: clamp(1rem, 3vw, 2rem) clamp(1rem, 4vw, 1.5rem) clamp(2rem, 6vw, 4rem);
}

/* === Buttons === */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.65rem 1.1rem;
    border: 1.5px solid transparent;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-family: var(--font-family);
    font-weight: 600;
    line-height: 1.2;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
    transition: background var(--duration-fast) var(--ease-out),
                border-color var(--duration-fast) var(--ease-out),
                color var(--duration-fast) var(--ease-out),
                box-shadow var(--duration-fast) var(--ease-out),
                transform var(--duration-fast) var(--ease-out);
    white-space: nowrap;
}

.btn:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.35);
}

.btn--primary {
    background: var(--color-accent);
    color: #fff;
    box-shadow: 0 4px 12px rgba(249, 115, 22, 0.22);
}
.btn--primary:hover {
    background: var(--color-accent-hover);
    box-shadow: 0 6px 18px rgba(249, 115, 22, 0.32);
    transform: translateY(-1px);
    color: #fff;
}
.btn--primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 6px rgba(249, 115, 22, 0.2);
}

.btn--secondary {
    background: transparent;
    color: var(--color-dark);
    border-color: var(--color-dark);
}
.btn--secondary:hover {
    background: var(--color-dark);
    color: #fff;
}

.btn--danger {
    background: var(--color-error);
    color: #fff;
    box-shadow: 0 4px 12px rgba(220, 38, 38, 0.18);
}
.btn--danger:hover { background: #B91C1C; transform: translateY(-1px); color: #fff; }

.btn--warning { background: #B45309; color: #fff; }
.btn--warning:hover { background: #92400E; color: #fff; }

.btn--success { background: #15803D; color: #fff; }
.btn--success:hover { background: #166534; color: #fff; }

.btn--link {
    background: none;
    color: var(--color-sky);
    border: none;
    padding-left: 0;
    padding-right: 0;
}
.btn--link:hover { color: var(--color-dark); text-decoration: underline; }

.btn--outline {
    background: transparent;
    color: var(--color-on-surface-variant);
    border-color: var(--color-outline-variant);
}
.btn--outline:hover {
    background: var(--color-surface-container-low);
    color: var(--color-dark);
    border-color: var(--color-dark);
}

.btn--ghost {
    background: transparent;
    color: var(--color-dark);
    border-color: transparent;
}
.btn--ghost:hover {
    background: var(--color-sky-tint);
    color: var(--color-dark);
}

.btn--small { padding: 0.4rem 0.75rem; font-size: 0.8rem; border-radius: var(--radius-default); }

.btn--with-icon { display: inline-flex; align-items: center; gap: 0.45rem; }
.btn--with-icon .material-symbols-outlined { font-size: 18px; }

/* === NavBar === */

.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 0.75rem 1rem 0;
    pointer-events: none;
}

.navbar__inner {
    pointer-events: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    padding: 0.6rem 0.6rem 0.6rem 1.25rem;
    max-width: var(--container-wide);
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: saturate(180%) blur(14px);
    -webkit-backdrop-filter: saturate(180%) blur(14px);
    border: 1px solid rgba(226, 232, 240, 0.7);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-level1);
}

.navbar__left {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    flex-shrink: 0;
    min-width: 0;
}

.navbar__logo {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-dark);
    text-decoration: none;
    letter-spacing: -0.02em;
}
.navbar__logo-img {
    width: 28px;
    height: 28px;
}

.navbar__back {
    color: var(--color-on-surface-variant);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}
.navbar__back::before {
    content: '←';
    font-size: 1rem;
    line-height: 1;
}
.navbar__back:hover { color: var(--color-dark); }

.navbar__nav {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.navbar__nav-link {
    padding: 0.45rem 0.85rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-on-surface-variant);
    text-decoration: none;
    border-radius: var(--radius-full);
    transition: color var(--duration-fast) var(--ease-out),
                background var(--duration-fast) var(--ease-out);
}

.navbar__nav-link:hover {
    color: var(--color-dark);
    background: var(--color-sky-tint);
}

.navbar__nav-link--active {
    color: var(--color-dark);
    background: var(--color-sky-soft);
    font-weight: 600;
}

.navbar__right {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
}

.navbar__user { font-weight: 500; font-size: 0.85rem; color: var(--color-on-surface-variant); }

.navbar__avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-sky) 0%, var(--color-dark) 100%);
    border: 2px solid #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    overflow: hidden;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    box-shadow: 0 2px 6px rgba(12, 74, 110, 0.18);
}

.navbar__avatar .material-symbols-outlined { font-size: 20px; }
.navbar__avatar-glyph { font-size: 18px; line-height: 1; }
.navbar__avatar--active { box-shadow: 0 0 0 2px var(--color-accent); }

/* Language switcher — segmented RU/EN toggle (anonymous navbar) */
.lang-switch {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    padding: 2px;
    margin-right: 0.5rem;
    background: var(--color-sky-tint);
    border-radius: var(--radius-full);
}

.lang-switch__option {
    border: none;
    background: transparent;
    padding: 0.3rem 0.55rem;
    font-size: 0.78rem;
    font-weight: 600;
    line-height: 1;
    color: var(--color-on-surface-variant);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: color var(--duration-fast) var(--ease-out),
                background var(--duration-fast) var(--ease-out);
}

.lang-switch__option:hover { color: var(--color-dark); }

.lang-switch__option--active {
    background: #fff;
    color: var(--color-dark);
    box-shadow: var(--shadow-level1);
    cursor: default;
}

@media (max-width: 640px) {
    .navbar { padding: 0.5rem 0.5rem 0; }
    .navbar__inner {
        padding: 0.5rem 0.5rem 0.5rem 0.85rem;
        gap: 0.5rem;
    }
    .navbar__left { gap: 0.5rem; }
    .navbar__nav { gap: 0; }
    .navbar__nav-link { padding: 0.35rem 0.6rem; font-size: 0.82rem; }
    .lang-switch__option { padding: 0.28rem 0.45rem; font-size: 0.75rem; }
}

/* === Tab Switcher === */

.tab-switcher {
    display: flex;
    gap: 0.25rem;
    background: var(--color-surface-container);
    padding: 4px;
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
}

.tab-switcher__tab {
    flex: 1;
    padding: 0.6rem 1.1rem;
    border: none;
    background: none;
    cursor: pointer;
    font-size: 0.875rem;
    font-family: var(--font-family);
    font-weight: 500;
    color: var(--color-on-surface-variant);
    border-radius: var(--radius-default);
    transition: color var(--duration-fast) var(--ease-out),
                background var(--duration-fast) var(--ease-out),
                box-shadow var(--duration-fast) var(--ease-out);
}

.tab-switcher__tab--active {
    color: var(--color-dark);
    background: #fff;
    font-weight: 600;
    box-shadow: 0 1px 4px rgba(15, 23, 42, 0.08);
}

.tab-switcher__tab:hover { color: var(--color-dark); }

/* === Auth Page === */

.auth-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100dvh;
    padding: 2rem 1rem;
    background:
        radial-gradient(ellipse 100% 60% at 50% 0%, var(--color-sky-tint) 0%, transparent 70%),
        radial-gradient(ellipse 60% 40% at 80% 90%, var(--color-accent-soft) 0%, transparent 70%);
}

.auth-brand {
    text-align: center;
    margin-bottom: 1.75rem;
}

.auth-brand__logo {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--color-dark);
    text-decoration: none;
    margin-bottom: 0.4rem;
    letter-spacing: -0.02em;
}

.auth-brand__logo:hover { color: var(--color-dark); }
.auth-brand__logo-img { width: 28px; height: 28px; }

.auth-brand__tagline {
    font-size: 0.7rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--color-on-surface-variant);
    font-weight: 600;
}

.auth-page {
    width: 100%;
    max-width: 420px;
    background: #fff;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-level3);
    padding: 2rem;
    border: 1px solid var(--color-outline-variant);
}

.auth-page .tab-switcher {
    margin-bottom: 1.5rem;
}

.auth-lang {
    margin-top: 1.5rem;
    text-align: center;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.3rem 0.85rem;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(8px);
    border-radius: var(--radius-full);
    border: 1px solid var(--color-outline-variant);
    align-self: center;
}

.auth-lang__btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 0.78rem;
    font-family: var(--font-family);
    color: var(--color-on-surface-variant);
    padding: 0.1rem 0.35rem;
    font-weight: 500;
    letter-spacing: 0.03em;
    border-radius: var(--radius-sm);
    transition: color var(--duration-fast) var(--ease-out);
}

.auth-lang__btn:hover { color: var(--color-dark); }

.auth-lang__btn--active {
    color: var(--color-dark);
    font-weight: 700;
}

.auth-lang__sep {
    color: var(--color-outline-variant);
    font-size: 0.78rem;
}

/* === Social Login === */

.social-login {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    margin-bottom: 1rem;
}

.social-login__google-btn,
.social-login__facebook-btn {
    width: 100%;
    padding: 0.7rem 1rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 0.88rem;
    font-family: var(--font-family);
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.65rem;
    transition: background var(--duration-fast) var(--ease-out),
                border-color var(--duration-fast) var(--ease-out),
                transform var(--duration-fast) var(--ease-out);
}

.social-login__google-container {
    width: 100%;
    overflow: hidden;
}

.social-login__facebook-btn {
    border: none;
    background: #1877F2;
    color: #fff;
}

.social-login__facebook-btn:hover { background: #166FE5; }

.social-login__divider {
    text-align: center;
    margin: 1rem 0;
    position: relative;
}

.social-login__divider::before,
.social-login__divider::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 40%;
    height: 1px;
    background: var(--color-outline-variant);
}

.social-login__divider::before { left: 0; }
.social-login__divider::after { right: 0; }

.social-login__divider span {
    background: #fff;
    padding: 0 0.85rem;
    color: var(--color-on-surface-variant);
    font-size: 0.8rem;
    font-weight: 500;
}

/* === Auth Form === */

.auth-form .form-field,
.auth-form__field {
    margin-bottom: 0.9rem;
}

.auth-form label {
    display: block;
    margin-bottom: 0.35rem;
    font-weight: 600;
    font-size: 0.82rem;
    color: var(--color-dark);
    letter-spacing: 0.005em;
}

.auth-form input[type="email"],
.auth-form input[type="password"],
.auth-form input[type="text"] {
    width: 100%;
    padding: 0.7rem 0.85rem;
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-md);
    font-size: 0.92rem;
    font-family: var(--font-family);
    color: var(--color-on-surface);
    background: #fff;
    outline: none;
    transition: border-color var(--duration-fast) var(--ease-out),
                box-shadow var(--duration-fast) var(--ease-out);
}

.auth-form input[type="email"]:focus,
.auth-form input[type="password"]:focus,
.auth-form input[type="text"]:focus {
    border-color: var(--color-sky);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.18);
}

.auth-form__password-wrapper {
    position: relative;
}

.auth-form__password-wrapper input[type="password"],
.auth-form__password-wrapper input[type="text"] {
    padding-right: 2.75rem;
}

.auth-form__password-toggle {
    position: absolute;
    right: 0.85rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    color: var(--color-on-surface-variant);
    display: flex;
    align-items: center;
    line-height: 1;
    transition: color var(--duration-fast) var(--ease-out);
}

.auth-form__password-toggle:hover { color: var(--color-dark); }

.auth-form__submit {
    width: 100%;
    padding: 0.8rem;
    margin-top: 0.5rem;
    background: var(--color-accent);
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-family: var(--font-family);
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 4px 14px rgba(249, 115, 22, 0.28);
    transition: background var(--duration-fast) var(--ease-out),
                transform var(--duration-fast) var(--ease-out),
                box-shadow var(--duration-fast) var(--ease-out);
}

.auth-form__submit:hover {
    background: var(--color-accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(249, 115, 22, 0.36);
}

.auth-form__forgot {
    display: block;
    text-align: center;
    margin-top: 0.85rem;
    font-size: 0.83rem;
    color: var(--color-on-surface-variant);
    text-decoration: none;
    cursor: pointer;
    background: none;
    border: none;
    width: 100%;
    font-family: var(--font-family);
    transition: color var(--duration-fast) var(--ease-out);
}

.auth-form__forgot:hover { color: var(--color-sky); }

/* === Alert Banner === */

.alert-banner {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    justify-content: space-between;
    padding: 0.85rem 1rem;
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid transparent;
}

[data-component="alert-banner"] {
    position: fixed;
    top: 1.25rem;
    right: 1.25rem;
    z-index: 1200;
    margin-bottom: 0;
    min-width: 280px;
    max-width: min(400px, calc(100vw - 2.5rem));
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    animation: alert-slide-in var(--duration-slow) var(--ease-out);
}

@keyframes alert-slide-in {
    from { opacity: 0; transform: translateX(12px); }
    to   { opacity: 1; transform: translateX(0); }
}

.alert-banner--info    { background: var(--color-sky-soft);     color: var(--color-dark);              border-color: rgba(14, 165, 233, 0.25); }
.alert-banner--success { background: #DCFCE7;                    color: #166534;                        border-color: rgba(21, 128, 61, 0.25); }
.alert-banner--error   { background: var(--color-error-container); color: var(--color-on-error-container); border-color: rgba(220, 38, 38, 0.25); }

.alert-banner__close {
    background: none;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    color: inherit;
    opacity: 0.7;
    line-height: 1;
    padding: 0.2rem 0.4rem;
    border-radius: var(--radius-sm);
    transition: opacity var(--duration-fast) var(--ease-out);
}

.alert-banner__close:hover { opacity: 1; }

/* === Modal === */

.modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    animation: modal-fade var(--duration-base) var(--ease-out);
}

@keyframes modal-fade {
    from { opacity: 0; }
    to   { opacity: 1; }
}

.modal__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.modal__content {
    position: relative;
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    width: 100%;
    max-width: 560px;
    max-height: 85vh;
    overflow-y: auto;
    box-shadow: var(--shadow-level3);
    border: 1px solid var(--color-outline-variant);
    animation: modal-pop var(--duration-base) var(--ease-out);
}

@keyframes modal-pop {
    from { opacity: 0; transform: scale(0.96) translateY(8px); }
    to   { opacity: 1; transform: scale(1) translateY(0); }
}

.modal__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.25rem;
}

.modal__title { font-size: 1.25rem; font-weight: 700; color: var(--color-dark); letter-spacing: -0.01em; }

.modal__close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-on-surface-variant);
    width: 2rem;
    height: 2rem;
    border-radius: var(--radius-full);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    transition: background var(--duration-fast) var(--ease-out),
                color var(--duration-fast) var(--ease-out);
}

.modal__close:hover { background: var(--color-surface-container); color: var(--color-dark); }

/* === Confirm Dialog === */

.confirm-dialog--closing { animation: modal-fade-out var(--duration-fast) var(--ease-out) forwards; }
.confirm-dialog--closing .modal__content { animation: modal-pop-out var(--duration-fast) var(--ease-out) forwards; }

@keyframes modal-fade-out {
    from { opacity: 1; }
    to   { opacity: 0; }
}
@keyframes modal-pop-out {
    from { opacity: 1; transform: scale(1) translateY(0); }
    to   { opacity: 0; transform: scale(0.96) translateY(8px); }
}

.confirm-dialog__content {
    max-width: 420px;
    padding: 1.75rem;
    display: flex;
    gap: 1.1rem;
    align-items: flex-start;
    text-align: left;
}

.confirm-dialog__icon {
    flex-shrink: 0;
    width: 2.75rem;
    height: 2.75rem;
    border-radius: var(--radius-full);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--color-surface-container);
    color: var(--color-on-surface-variant);
}

.confirm-dialog__icon .material-symbols-outlined { font-size: 1.5rem; }

.confirm-dialog--danger .confirm-dialog__icon {
    background: rgba(220, 38, 38, 0.12);
    color: var(--color-error);
}

.confirm-dialog__body { flex: 1; min-width: 0; }

.confirm-dialog__title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-dark);
    letter-spacing: -0.01em;
    margin: 0 0 0.4rem;
}

.confirm-dialog__message {
    font-size: 0.95rem;
    line-height: 1.5;
    color: var(--color-on-surface-variant);
    margin: 0;
}

.confirm-dialog__footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.6rem;
    margin-top: 1.5rem;
}

@media (max-width: 480px) {
    .confirm-dialog__footer { flex-direction: column-reverse; }
    .confirm-dialog__footer .btn { width: 100%; }
}

/* === Form Fields === */

.form-field {
    margin-bottom: 1.1rem;
}

.form-field label {
    display: block;
    margin-bottom: 0.35rem;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--color-dark);
}

.form-field input[type="text"],
.form-field input[type="email"],
.form-field input[type="password"],
.form-field textarea,
.form-field select {
    width: 100%;
    padding: 0.65rem 0.85rem;
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-md);
    font-size: 0.92rem;
    font-family: var(--font-family);
    color: var(--color-on-surface);
    background: #fff;
    outline: none;
    transition: border-color var(--duration-fast) var(--ease-out),
                box-shadow var(--duration-fast) var(--ease-out);
}

.form-field input[type="text"]:focus,
.form-field input[type="email"]:focus,
.form-field input[type="password"]:focus,
.form-field textarea:focus,
.form-field select:focus {
    border-color: var(--color-sky);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.18);
}

.form-field textarea { min-height: 90px; resize: vertical; line-height: 1.5; }

.form-field--checkbox label {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
}

.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.checkbox-group label {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-weight: 500;
    font-size: 0.85rem;
}

/* === Validation Error State === */

.form-field--error input[type="text"],
.form-field--error input[type="password"],
.form-field--error textarea,
.form-field--error select,
.form-field--error .deck-multiselect__search {
    border-color: var(--color-error);
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.12);
}

.form-field__error {
    display: block;
    color: var(--color-error);
    font-size: 0.8rem;
    margin-top: 0.3rem;
    font-weight: 500;
}

.form-field__mode-tag {
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--color-dark);
    background: var(--color-sky-soft);
    padding: 0.15rem 0.5rem;
    border-radius: var(--radius-full);
    margin-left: 0.5rem;
    vertical-align: middle;
    letter-spacing: 0.02em;
}

/* === Deck Multi-Select === */

.deck-multiselect {
    position: relative;
}

.deck-multiselect__input-wrapper {
    position: relative;
}

.deck-multiselect__search {
    width: 100%;
    padding: 0.65rem 0.85rem;
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-md);
    font-size: 0.92rem;
    font-family: var(--font-family);
    color: var(--color-on-surface);
    background: #fff;
    outline: none;
    transition: border-color var(--duration-fast) var(--ease-out),
                box-shadow var(--duration-fast) var(--ease-out);
}

.deck-multiselect__search:focus {
    border-color: var(--color-sky);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.18);
}

.deck-multiselect__dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    max-height: 220px;
    overflow-y: auto;
    background: #fff;
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-md);
    margin-top: 6px;
    box-shadow: var(--shadow-level2);
    z-index: 1100;
}

.deck-multiselect__option {
    padding: 0.6rem 0.85rem;
    cursor: pointer;
    font-size: 0.88rem;
    border-bottom: 1px solid var(--color-surface-container-low);
    transition: background var(--duration-fast) var(--ease-out);
}

.deck-multiselect__option:hover {
    background: var(--color-sky-tint);
}

.deck-multiselect__option--selected {
    background: var(--color-sky-soft);
    color: var(--color-dark);
    font-weight: 500;
}

.deck-multiselect__option:last-child {
    border-bottom: none;
}

.deck-multiselect__selected {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-top: 0.85rem;
}

.deck-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.7rem;
    background: var(--color-sky-soft);
    border: 1px solid rgba(14, 165, 233, 0.2);
    border-radius: var(--radius-full);
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--color-dark);
}

.deck-chip__remove {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-on-surface-variant);
    font-size: 1rem;
    line-height: 1;
    padding: 0;
    width: 16px;
    height: 16px;
    border-radius: var(--radius-full);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: background var(--duration-fast) var(--ease-out),
                color var(--duration-fast) var(--ease-out);
}

.deck-chip__remove:hover {
    background: rgba(220, 38, 38, 0.12);
    color: var(--color-error);
}

/* === Home Page === */

.page-container:has(.home-page) {
    max-width: 880px;
}

.home-page {
    display: flex;
    flex-direction: column;
    gap: clamp(1.5rem, 4vw, 2.5rem);
    padding-top: clamp(1.5rem, 4vw, 2.5rem);
}

.learning-section {
    display: flex;
    justify-content: center;
}

#guest-learning-section {
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

#learning-area {
    width: 100%;
    background: #fff;
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-outline-variant);
    box-shadow: var(--shadow-level2);
    padding: clamp(1.75rem, 4vw, 2.75rem);
    /* Tall, stable height so flip/choice/type/cloze land at a similar size and the
       card no longer visibly resizes when switching between modes. */
    min-height: 440px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    text-align: center;
    position: relative;
    transition: box-shadow var(--duration-base) var(--ease-out);
    overflow: hidden;
}

#learning-area::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-sky) 0%, var(--color-accent) 100%);
    opacity: 0.85;
}

#learning-area:hover {
    box-shadow: var(--shadow-level3);
}

#learning-area:empty::before,
.learning-area__empty {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-on-surface-variant);
    font-size: 1rem;
    min-height: 220px;
}

.learning-area__settings {
    position: absolute;
    top: 16px;
    right: 16px;
    background: var(--color-surface-container-low);
    border: 1px solid var(--color-outline-variant);
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-full);
    color: var(--color-on-surface-variant);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: background var(--duration-fast) var(--ease-out),
                color var(--duration-fast) var(--ease-out),
                border-color var(--duration-fast) var(--ease-out);
    z-index: 1;
}

.learning-area__settings:hover {
    background: var(--color-sky-tint);
    color: var(--color-dark);
    border-color: rgba(14, 165, 233, 0.3);
}

.learning-area__settings .material-symbols-outlined { font-size: 22px; }

#learning-area .card-preview__container {
    background: transparent;
    border: none;
    padding: 0;
    width: 100%;
    /* Fixed height: the body absorbs (and scrolls) content changes, so revealing the
       answer / grading buttons / feedback never resizes the card. */
    height: 400px;
}

#learning-area .flip-view {
    /* Grow to fill the whole card body so the entire stage is one large click/tap
       target, not just the text. min-height: 0 lets it shrink under flex overflow. */
    flex: 1 1 auto;
    min-height: 0;
    padding: 1rem;
    margin: 1.5em 0;
    /* A visible outline + tint reads as "a card" distinct from the page card behind it,
       reinforcing that there is a back side to flip to. */
    background: var(--color-surface-container-low);
    border: 1px solid var(--color-outline-variant);
    position: relative;
}

#learning-area .flip-view:hover { background: var(--color-sky-tint); }

.learning-counter {
    text-align: center;
    margin-top: 0.25rem;
    font-size: 0.8rem;
    color: var(--color-on-surface-variant);
    letter-spacing: 0.02em;
    font-weight: 500;
}

.deck-header {
    margin-top: 0.5rem;
    margin-bottom: 0.25rem;
    text-align: center;
}

.deck-header__title {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-sky);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.deck-header__description {
    font-size: 0.9rem;
    color: var(--color-on-surface-variant);
    margin-top: 0.35rem;
    font-weight: 400;
    text-transform: none;
    letter-spacing: normal;
}

.learning-area__author {
    position: absolute;
    top: 16px;
    left: 16px;
    z-index: 1;
    display: inline-flex;
    align-items: center;
    background: transparent;
    border: none;
    border-radius: var(--radius-full);
    padding: 6px 14px 6px 6px;
}

.learning-area__author .author-credit {
    font-size: 0.9rem;
}

.learning-area__author .author-credit__avatar {
    width: 28px;
    height: 28px;
}

.card-title-header {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-on-surface-variant);
    margin-bottom: 0.5rem;
    text-align: center;
}

/* Disambiguating Context cue, injected inside the card just above the prompt before answering
   (e.g. "язык" → "орган"). It is part of the question, so it reads quiet and neutral — never the
   amber of the post-answer explanation, which would imply it carries the answer. */
.card-context {
    width: fit-content;
    max-width: 100%;
    margin: 0 auto;
    padding: 0.25rem 0.7rem;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--color-sky);
    background: rgba(14, 165, 233, 0.1);
    border-radius: var(--radius-full);
    text-align: center;
}

/* Inline wrapper used by non-flip, non-cloze modes: prompt + context badge sit on one baseline. */
.card-prompt-wrapper {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    max-width: 100%;
}

.card-prompt-wrapper .card-context { margin: 0; }
.card-prompt-wrapper .cloze-view__front { margin-bottom: 0; }
.cloze-view .card-prompt-wrapper,
.cloze-choice-view .card-prompt-wrapper { margin-bottom: 0.75rem; }

/* Flip's card is a flex row — the cue is a flow sibling appended after the front prompt,
   so it naturally appears to its right. Hide once revealed (the answer takes over). */
.card-context--flip {
    margin: 0 0 0 0.5em;
}

/* Once flipped, the demoted prompt moves to the top of the box where the cue sits, and the answer
   is already shown — so the disambiguating cue is both redundant and in the way. Hide it. */
.flip-view--revealed .card-context--flip { display: none; }

/* The task cue. Deliberately quiet: it tells the user WHAT to do, but must never
   out-shout the stimulus (.card-prompt), which is the hero of every card. */
.card-instruction {
    flex: none;
    max-width: 100%;
    margin: 0 auto;
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--color-on-surface-variant);
    letter-spacing: 0.01em;
    text-align: center;
    line-height: 1.3;
}

/* === Stable card stage ===
   Every mode renders into the same three rows so revealing the answer, showing
   grading buttons or feedback happens in already-reserved space — no reflow. */
.card-stage__body {
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    /* "safe" keeps content centred when it fits but falls back to top-aligned + scroll
       when it doesn't, so a tall card (6-pair Match, long cloze) never clips its start. */
    justify-content: safe center;
    gap: 1.1rem;
    width: 100%;
    min-height: 0;
    overflow-y: auto;
}

.card-stage__footer {
    flex: none;
    /* Reserve room for the tallest control row (self-assessment / feedback + Next)
       so it is always present and never grows the card when it fills. */
    min-height: 64px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    gap: 0.85rem;
    width: 100%;
}

/* The single, mode-independent stimulus treatment. Largest, highest-contrast
   element on the card so "what to recall" reads instantly. */
.card-prompt {
    font-family: var(--font-family-content);
    font-size: clamp(1.7rem, 4.5vw, 2.15rem);
    font-weight: 600;
    line-height: 1.25;
    letter-spacing: -0.01em;
    color: var(--color-dark);
    text-align: center;
}

/* Inline pronunciation play button: a quiet circular icon shown next to the studied word in the
   learning views and the card form. Sized relative to surrounding text; never autoplays. */
.audio-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    vertical-align: middle;
    margin-left: 0.4rem;
    width: 1.9em;
    height: 1.9em;
    padding: 0;
    border: none;
    border-radius: 999px;
    background: var(--color-surface-container);
    color: var(--color-primary);
    cursor: pointer;
    line-height: 1;
    transition: background-color 0.15s ease, transform 0.05s ease;
}
.audio-btn:hover { background: var(--color-primary-container); }
.audio-btn:active { transform: scale(0.92); }
.audio-btn .material-symbols-outlined { font-size: 1.15em; }

/* Card form: the back-audio URL input, its "resolve" action, and a preview play button on one row. */
.card-form__audio-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.card-form__audio-row input { flex: 1 1 auto; min-width: 0; }
.card-form__audio-row .audio-btn { margin-left: 0; flex: 0 0 auto; }

/* Bulk edit: "add pronunciation" button + its persistent inline result status. */
.bulk-edit__audio-control {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem 0.75rem;
}
.bulk-edit__audio-status {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-on-surface-variant);
}
/* Unicode glyphs (not the icon font) so the marker never depends on ligature support. */
.bulk-edit__audio-status::before { font-weight: 700; }
.bulk-edit__audio-status--working { color: var(--color-on-surface-variant); }
.bulk-edit__audio-status--working::before { content: '\2026'; }       /* … */
.bulk-edit__audio-status--ok { color: #166534; }
.bulk-edit__audio-status--ok::before { content: '\2713'; }            /* ✓ */
.bulk-edit__audio-status--warn { color: #92400e; }
.bulk-edit__audio-status--warn::before { content: '\26A0'; }          /* ⚠ */
.bulk-edit__audio-status--none { color: var(--color-on-surface-variant); }
.bulk-edit__audio-status--none::before { content: '\2715'; }          /* ✕ */

/* Collapsed per-card pronunciation report. */
.bulk-edit__audio-report { margin-top: 0.5rem; }
.bulk-edit__audio-report > summary {
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-primary);
    user-select: none;
}
.bulk-edit__audio-report-list {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    margin-top: 0.4rem;
    max-height: 240px;
    overflow-y: auto;
}
.bulk-edit__audio-row-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    padding: 0.15rem 0;
}
.bulk-edit__audio-row-cases {
    flex: 1 1 auto;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--color-dark);
}
.bulk-edit__audio-row-state { flex: 0 0 auto; font-weight: 600; white-space: nowrap; }
.bulk-edit__audio-row-state--added    { color: #166534; }
.bulk-edit__audio-row-state--notfound { color: #92400e; }
.bulk-edit__audio-row-state--skipped  { color: var(--color-on-surface-variant); }
.bulk-edit__audio-report-list .audio-btn { flex: 0 0 auto; margin-left: 0; }

/* AI deck "add audio" toggle on the plan-preview step. */
.ai-deck__audio-option {
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    margin: 0.75rem 0;
    cursor: pointer;
}
.ai-deck__audio-option-body { display: flex; flex-direction: column; gap: 0.15rem; }

/* Footer action row: the hint affordance (optional) sits beside the Continue button.
   Correctness and the correct answer are conveyed by the card itself, not repeated here. */
.card-stage__actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
}

/* Hint is an icon button — a long rule/explanation opens in a popup instead of stretching
   the card. Amber tint reads as "help" without shouting. */
.card-hint-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    padding: 0;
    border-radius: var(--radius-full);
    border: 1px solid var(--color-feedback-hard-bg);
    background: var(--color-feedback-hard-bg);
    color: var(--color-feedback-hard-text);
    cursor: pointer;
    transition: filter var(--duration-fast) var(--ease-out),
                box-shadow var(--duration-fast) var(--ease-out);
}
.card-hint-btn:hover { filter: brightness(0.96); }
.card-hint-btn:focus-visible { outline: 2px solid var(--color-feedback-hard-text); outline-offset: 2px; }
.card-hint-btn .material-symbols-outlined { font-size: 22px; }

.card-hint__text {
    font-size: 1rem;
    line-height: 1.55;
    color: var(--color-on-surface);
    white-space: pre-wrap;
}

/* The revealed correct answer for free-text modes (Type / ClozeType), where the card
   does not otherwise show it. Shown in the body next to the user's attempt. */
.answer-reveal {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-family: var(--font-family-content);
    font-size: clamp(1.3rem, 3.5vw, 1.6rem);
    font-weight: 600;
    color: var(--color-feedback-correct-text);
}
.answer-reveal::before { content: '\2713'; font-weight: 700; }

.card-preview__hint {
    font-size: 0.85rem;
    color: #92400E;
    background: #FEF3C7;
    padding: 0.35rem 0.75rem;
    border-radius: var(--radius-default);
    margin-top: 0.5rem;
}

/* === Section card pattern (Progress, MyDeckList shared) === */

.section-card {
    background: #fff;
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-lg);
    padding: clamp(1.25rem, 3vw, 1.75rem);
    box-shadow: var(--shadow-level1);
}

/* === Progress Panel === */

.progress-panel {
    background: #fff;
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-lg);
    padding: clamp(1.25rem, 3vw, 1.75rem);
    box-shadow: var(--shadow-level1);
}

.progress-panel__header {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-bottom: 1.25rem;
}

.progress-panel__header h2 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-dark);
    letter-spacing: -0.01em;
}

.progress-panel__icon {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-default);
    background: var(--color-sky-soft);
    color: var(--color-sky);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.progress-panel__icon .material-symbols-outlined { font-size: 20px; }

.progress-block {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
}

.progress-block + .progress-block {
    margin-top: 1.25rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--color-outline-variant);
}

.progress-panel__label {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-on-surface-variant);
}

.progress-block__head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 0.5rem;
}

.progress-block__count {
    font-weight: 700;
    font-size: 1.4rem;
    color: var(--color-dark);
    letter-spacing: -0.02em;
    line-height: 1.1;
}

.progress-block__count--done {
    color: var(--color-feedback-correct-text);
}

.progress-block__caption {
    font-size: 0.8rem;
    color: var(--color-on-surface-variant);
    line-height: 1.35;
}

.progress-block__caption-sep {
    opacity: 0.6;
}

/* Daily queue cleared: celebrate + nudge toward a new deck */
.progress-done {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
}

.progress-done__title {
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--color-feedback-correct-text);
}

.progress-done__text {
    font-size: 0.8rem;
    color: var(--color-on-surface-variant);
    line-height: 1.4;
}

.progress-done__cta {
    margin-top: 0.15rem;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.progress-done__cta .material-symbols-outlined {
    font-size: 18px;
}

.progress-done__forecast {
    font-size: 0.75rem;
    color: var(--color-on-surface-variant);
    opacity: 0.85;
}

/* Overdue = the carried-over part of what's left today, not a separate pile */
.progress-block__overdue {
    font-weight: 700;
    color: var(--color-feedback-hard-text);
}

/* Maturity ladder: New → Learning → Consolidating → Long-term memory */
.progress-maturity {
    display: flex;
    height: 10px;
    border-radius: var(--radius-full);
    overflow: hidden;
    background: var(--color-surface-container-high);
    gap: 2px;
}

.progress-maturity__seg {
    flex-grow: 0;
    flex-basis: 0;
    min-width: 0;
    transition: flex-grow var(--duration-slow) var(--ease-out);
}

.progress-maturity__seg--new       { background: var(--color-surface-container-highest); }
.progress-maturity__seg--learning  { background: var(--color-accent); }
.progress-maturity__seg--young     { background: var(--color-sky); }
.progress-maturity__seg--mature    { background: var(--color-feedback-correct-text); }

.progress-maturity__legend {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem 0.9rem;
    margin-top: 0.15rem;
}

.progress-maturity__legend-item {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-on-surface-variant);
}

.progress-maturity__dot {
    width: 9px;
    height: 9px;
    border-radius: var(--radius-full);
    flex-shrink: 0;
}

.progress-maturity__dot--new       { background: var(--color-surface-container-highest); }
.progress-maturity__dot--learning  { background: var(--color-accent); }
.progress-maturity__dot--young     { background: var(--color-sky); }
.progress-maturity__dot--mature    { background: var(--color-feedback-correct-text); }

/* Today — forward-motion stat tiles (learned / reviewed / correct). */
.progress-today {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
    margin-top: 0.5rem;
}
.progress-today__stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.15rem;
    padding: 0.6rem 0.4rem;
    background: var(--color-surface-container-high);
    border-radius: var(--radius-md);
}
.progress-today__value {
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1;
    color: var(--color-dark);
    letter-spacing: -0.02em;
}
.progress-today__label {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--color-on-surface-variant);
}
/* The "learned" tile is the SR-native highlight — graduating cards is the real win. */
.progress-today__stat--learned .progress-today__value { color: var(--color-feedback-correct-text); }

.progress-panel__bar {
    height: 6px;
    background: var(--color-surface-container-high);
    border-radius: var(--radius-full);
    margin-top: 0.4rem;
    overflow: hidden;
}

.progress-panel__bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-sky) 0%, var(--color-accent) 100%);
    border-radius: var(--radius-full);
    transition: width var(--duration-slow) var(--ease-out);
}

/* === My Deck List === */

.my-deck-list {
    background: #fff;
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-lg);
    padding: clamp(1.25rem, 3vw, 1.75rem);
    box-shadow: var(--shadow-level1);
}

.my-deck-list__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.25rem;
    gap: 1rem;
}

.my-deck-list__header-left {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    min-width: 0;
}

.my-deck-list__icon {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-default);
    background: var(--color-accent-soft);
    color: var(--color-accent);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.my-deck-list__icon .material-symbols-outlined { font-size: 20px; }

.my-deck-list__header h2 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-dark);
    letter-spacing: -0.01em;
}

.my-deck-list__header-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
}

.my-deck-list__sep {
    color: var(--color-outline-variant);
    font-size: 0.85rem;
}

.my-deck-list__action {
    background: transparent;
    border: 1px solid var(--color-outline-variant);
    cursor: pointer;
    padding: 0.4rem 0.85rem;
    border-radius: var(--radius-full);
    font-family: var(--font-family);
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--color-on-surface-variant);
    letter-spacing: 0.01em;
    transition: color var(--duration-fast) var(--ease-out),
                border-color var(--duration-fast) var(--ease-out),
                background var(--duration-fast) var(--ease-out);
}

.my-deck-list__action:hover {
    color: var(--color-dark);
    border-color: var(--color-dark);
    background: var(--color-surface-container-low);
}

.my-deck-list__action--primary {
    color: #fff;
    background: var(--color-accent);
    border-color: var(--color-accent);
    box-shadow: 0 4px 12px rgba(249, 115, 22, 0.22);
}
.my-deck-list__action--primary:hover {
    color: #fff;
    background: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    transform: translateY(-1px);
}

#my-deck-list-items {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.my-deck-list__item {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 0.85rem;
    border-radius: var(--radius-md);
    text-decoration: none;
    color: inherit;
    transition: background var(--duration-fast) var(--ease-out),
                transform var(--duration-fast) var(--ease-out);
}

.my-deck-list__item:hover {
    background: var(--color-sky-tint);
    transform: translateX(2px);
}

.my-deck-list__check {
    width: 1.05rem;
    height: 1.05rem;
    border-radius: var(--radius-sm);
    accent-color: var(--color-sky);
    cursor: pointer;
    flex-shrink: 0;
}

.my-deck-list__body {
    flex: 1;
    min-width: 0;
}

.my-deck-list__title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-dark);
    line-height: 1.3;
}

.my-deck-list__meta {
    font-size: 0.78rem;
    color: var(--color-on-surface-variant);
    margin-top: 2px;
}

.my-deck-list__menu {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.4rem;
    color: var(--color-outline);
    display: inline-flex;
    border-radius: var(--radius-full);
    transition: color var(--duration-fast) var(--ease-out),
                background var(--duration-fast) var(--ease-out);
}

.my-deck-list__menu:hover { color: var(--color-dark); background: var(--color-surface-container); }
.my-deck-list__menu .material-symbols-outlined { font-size: 20px; }

.my-deck-list__view-all-wrapper {
    display: flex;
    justify-content: center;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--color-outline-variant);
}

.my-deck-list__view-all {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--color-sky);
    text-decoration: none;
    padding: 0.4rem 0.85rem;
    border-radius: var(--radius-full);
    transition: color var(--duration-fast) var(--ease-out),
                background var(--duration-fast) var(--ease-out);
}

.my-deck-list__view-all:hover { color: var(--color-dark); background: var(--color-sky-tint); }

.my-deck-list__view-all .material-symbols-outlined {
    font-size: 16px;
    transition: transform var(--duration-fast) var(--ease-out);
}

.my-deck-list__view-all:hover .material-symbols-outlined {
    transform: translateX(3px);
}

.my-deck-list__empty {
    padding: 2.5rem 0.5rem;
    text-align: center;
    color: var(--color-on-surface-variant);
    font-size: 0.9rem;
}

/* === Mode Filter === */

.mode-filter {
    padding: 1.25rem 0;
    border-bottom: 1px solid var(--color-outline-variant);
}

.mode-filter h2 {
    margin-bottom: 0.75rem;
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-dark);
}

.mode-filter__list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.mode-filter__list label {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.82rem;
    padding: 0.4rem 0.85rem;
    border-radius: var(--radius-full);
    border: 1px solid var(--color-outline-variant);
    cursor: pointer;
    transition: background var(--duration-fast) var(--ease-out),
                border-color var(--duration-fast) var(--ease-out),
                color var(--duration-fast) var(--ease-out);
    color: var(--color-on-surface-variant);
    user-select: none;
}

.mode-filter__list label:has(input:checked) {
    background: var(--color-sky-soft);
    border-color: var(--color-sky);
    color: var(--color-dark);
    font-weight: 600;
}

.mode-filter__list input[type="checkbox"] {
    width: 14px;
    height: 14px;
    accent-color: var(--color-sky);
}

/* === Decks Page === */

.decks-page__actions { margin-top: 1.25rem; display: flex; gap: 0.75rem; flex-wrap: wrap; }

/* === Deck Import === */

.deck-import__formats {
    background: var(--color-surface-container-low);
    border: 1px solid var(--color-surface-container-high);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    margin-bottom: 1.25rem;
    font-size: 0.85rem;
}

.deck-import__formats strong { display: block; margin-bottom: 0.25rem; }
.deck-import__formats p { margin: 0; color: var(--color-dark); opacity: 0.85; }

.deck-import__dropzone {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    padding: 1.5rem 1rem;
    text-align: center;
    border: 2px dashed var(--color-surface-container-highest);
    border-radius: var(--radius-md);
    background: var(--color-surface-container-lowest);
    cursor: pointer;
    transition: border-color 0.15s ease, background 0.15s ease;
}

.deck-import__dropzone:hover,
.deck-import__dropzone--active {
    border-color: var(--color-primary);
    background: var(--color-sky-soft);
}

.deck-import__dropzone-icon { font-size: 2rem; color: var(--color-primary); }
.deck-import__dropzone-text { font-weight: 500; word-break: break-all; }
.deck-import__dropzone-sub { font-size: 0.8rem; opacity: 0.7; }

/* === Deck List === */

.deck-list {
    margin-top: 1rem;
}

.deck-list #deck-list-items,
.deck-list #public-deck-list-items {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}

.deck-item {
    display: block;
    padding: 1.1rem 1.25rem;
    background: #fff;
    border: 1px solid var(--color-outline-variant);
    text-decoration: none;
    color: inherit;
    transition: border-color var(--duration-fast) var(--ease-out),
                box-shadow var(--duration-fast) var(--ease-out),
                transform var(--duration-fast) var(--ease-out);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-level1);
}

.deck-item:hover {
    border-color: var(--color-sky);
    box-shadow: var(--shadow-level2);
    transform: translateY(-2px);
}

.deck-item__header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
    flex-wrap: wrap;
}

.deck-item__title { font-size: 1.05rem; font-weight: 700; color: var(--color-dark); letter-spacing: -0.01em; }

.deck-item__badge {
    font-size: 0.7rem;
    background: var(--color-accent);
    color: #fff;
    border-radius: var(--radius-full);
    padding: 0.15rem 0.65rem;
    white-space: nowrap;
    font-weight: 600;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.deck-item__description { font-size: 0.9rem; color: var(--color-on-surface-variant); margin-bottom: 0.25rem; }

.deck-item__meta {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    flex-wrap: wrap;
    margin-top: 0.75rem;
}

.deck-item__count { font-size: 0.8rem; color: var(--color-on-surface-variant); font-weight: 500; }
/* In the header, the card count is pushed to the trailing edge for a compact single-line layout. */
.deck-item__header .deck-item__count { margin-left: auto; white-space: nowrap; }

/* Social proof on a catalogue card (learners / likes), shown only above the visibility threshold. */
.deck-item__proof {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    flex-wrap: wrap;
    margin-top: 0.6rem;
}
.deck-item__proof-item {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.8rem;
    color: var(--color-on-surface-variant);
}
.deck-item__proof-item .material-symbols-outlined { font-size: 1rem; }

/* Catalogue hub (anonymous /decks) */
.catalog-hub { display: flex; flex-direction: column; gap: 1.5rem; }
.catalog-hub__intro { display: flex; flex-direction: column; gap: 0.5rem; }
.catalog-hub__breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.85rem;
    color: var(--color-on-surface-variant);
}
.catalog-hub__breadcrumb a { color: var(--color-primary); text-decoration: none; }
.catalog-hub__breadcrumb a:hover { text-decoration: underline; }
.catalog-hub__title { margin: 0; }
.catalog-hub__lead {
    margin: 0;
    max-width: 60ch;
    color: var(--color-on-surface-variant);
    font-size: 1.05rem;
    line-height: 1.5;
}
.catalog-hub__pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-top: 0.5rem;
}
.catalog-hub__page-info { font-size: 0.9rem; color: var(--color-on-surface-variant); }
.catalog-hub__cta {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 1.5rem;
    border-radius: var(--radius-lg, 16px);
    background: var(--color-surface-variant, rgba(0,0,0,0.04));
}
.catalog-hub__cta-text { margin: 0; max-width: 50ch; color: var(--color-on-surface-variant); }

/* Per-deck memory-maturity breakdown — a compact reuse of the home progress-maturity bar. */
.deck-item__maturity {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    margin-top: 0.75rem;
}
.progress-maturity--compact { height: 7px; }
.deck-item__maturity .progress-maturity__legend { gap: 0.3rem 0.75rem; }
.deck-item__maturity .progress-maturity__legend-item { font-size: 0.72rem; font-weight: 500; }
.deck-item__tags { display: flex; gap: 0.35rem; flex-wrap: wrap; }
.deck-chip--small { font-size: 0.72rem; padding: 0.15rem 0.55rem; }
.deck-item__following-badge { font-size: 0.78rem; font-weight: 500; color: var(--color-primary); border: 1px solid var(--color-primary); border-radius: 999px; padding: 0.15rem 0.65rem; }
.deck-item__owner-badge { font-size: 0.78rem; font-weight: 500; color: var(--color-on-surface-variant); border: 1px solid var(--color-outline); border-radius: 999px; padding: 0.15rem 0.65rem; }
.deck-list__empty { color: var(--color-on-surface-variant); font-size: 0.9rem; padding: 2rem 0; text-align: center; }

/* Author attribution (avatar + name + optional verified mark) on deck cards and the deck hero.
   Creator-growth: the author is the trust signal behind a public deck. */
.author-credit {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    max-width: 100%;
    min-width: 0;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--color-on-surface-variant);
    text-decoration: none;
}
.author-credit--link { color: var(--color-primary); }
.author-credit--link:hover .author-credit__name { text-decoration: underline; }
.author-credit__avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 22px;
    height: 22px;
    border-radius: var(--radius-full);
    overflow: hidden;
    background: var(--color-sky-tint);
    color: var(--color-dark);
    line-height: 1;
}
.author-credit__photo { width: 100%; height: 100%; object-fit: cover; }
.author-credit__initials { font-size: 0.68rem; font-weight: 700; text-transform: uppercase; }
.author-credit__glyph { font-size: 0.85rem; }
.author-credit__name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.author-credit__verified { font-size: 1rem; color: var(--color-sky); flex-shrink: 0; }
/* On a deck card the credit sits on its own line just under the title. */
.deck-item .author-credit { margin-bottom: 0.5rem; }

/* Social counters + like button on public deck cards (creator-growth P1.3). */
.deck-item__stat {
    display: inline-flex;
    align-items: center;
    gap: 0.2rem;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--color-on-surface-variant);
}
.deck-item__stat .material-symbols-outlined { font-size: 1rem; }

.deck-item__like {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--color-on-surface-variant);
    background: none;
    border: 1px solid var(--color-outline);
    border-radius: 999px;
    padding: 0.15rem 0.6rem;
    cursor: pointer;
    transition: color 0.15s ease, border-color 0.15s ease, background-color 0.15s ease;
}
.deck-item__like .material-symbols-outlined { font-size: 1rem; }
.deck-item__like:hover { border-color: var(--color-primary); color: var(--color-primary); }
.deck-item__like--active {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background-color: color-mix(in srgb, var(--color-primary) 10%, transparent);
}
/* Filled heart while liked. */
.deck-item__like--active .material-symbols-outlined { font-variation-settings: 'FILL' 1; }

/* === Deck filter (shared search + content language [+ sort] + tag chips, used by both deck tabs) === */

.deck-filter { margin-bottom: 1.25rem; }

.deck-filter-bar {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex-wrap: wrap;
}
.deck-filter-bar__search {
    position: relative;
    display: flex;
    align-items: center;
    flex: 1 1 240px;
}
.deck-filter-bar__search-icon {
    position: absolute;
    left: 0.8rem;
    font-size: 1.15rem;
    color: var(--color-on-surface-variant);
    pointer-events: none;
}
.deck-filter-bar__input {
    width: 100%;
    min-height: 42px;
    padding: 0.5rem 0.9rem 0.5rem 2.45rem;
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    color: var(--color-on-surface);
    font-family: var(--font-family);
    font-size: 0.9rem;
    box-shadow: var(--shadow-level1);
    outline: none;
    transition: border-color var(--duration-fast) var(--ease-out),
                box-shadow var(--duration-fast) var(--ease-out);
}
.deck-filter-bar__input:focus {
    border-color: var(--color-sky);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.18);
}
.deck-filter-bar__select {
    min-height: 42px;
    min-width: 120px;
    padding: 0.5rem 2.2rem 0.5rem 0.85rem;
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-md);
    background-color: var(--color-surface);
    /* Custom chevron (native arrow removed) so the control matches the design system across browsers. */
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23475569' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.85rem center;
    color: var(--color-on-surface);
    box-shadow: var(--shadow-level1);
    cursor: pointer;
    font-family: var(--font-family);
    font-size: 0.9rem;
    font-weight: 500;
    appearance: none;
    -webkit-appearance: none;
    outline: none;
    transition: border-color var(--duration-fast) var(--ease-out),
                box-shadow var(--duration-fast) var(--ease-out);
}
.deck-filter-bar__select:focus {
    border-color: var(--color-sky);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.18);
}

/* Tag chips: a wrap of toggle pills under the controls row. Hidden via [hidden] until populated. */
.deck-filter__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    margin-top: 0.85rem;
}
.deck-filter__tag {
    display: inline-flex;
    align-items: center;
    padding: 0.3rem 0.7rem;
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-full);
    background: var(--color-surface);
    color: var(--color-on-surface-variant);
    font-family: var(--font-family);
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: border-color var(--duration-fast) var(--ease-out),
                background var(--duration-fast) var(--ease-out),
                color var(--duration-fast) var(--ease-out);
}
.deck-filter__tag:hover {
    border-color: var(--color-sky);
    color: var(--color-dark);
}
.deck-filter__tag--active {
    background: var(--color-sky-soft);
    border-color: rgba(14, 165, 233, 0.2);
    color: var(--color-dark);
}
.deck-filter__tag:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.18);
}

@media (max-width: 640px) {
    .deck-filter-bar {
        align-items: stretch;
    }

    .deck-filter-bar__search {
        flex-basis: 100%;
    }

    .deck-filter-bar__select {
        flex: 1 1 auto;
    }
}

/* === Study selection (home-learning deck picker on /decks) === */

.decks-page__select-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 0.85rem;
}

.decks-page__select-hint { font-size: 0.85rem; color: var(--color-on-surface-variant); }
.decks-page__select-actions { display: flex; gap: 0.5rem; }

/* Selectable deck card: checkbox, linked body, quick-study icon. */
.deck-item--selectable {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: start;
    column-gap: 0.85rem;
}

.deck-item--selectable .deck-item__link {
    grid-column: 2 / 4;
    grid-row: 1;
    min-width: 0;
    padding-right: 2.85rem;
    text-decoration: none;
    color: inherit;
}

.deck-item__select-check {
    grid-column: 1;
    grid-row: 1;
    width: 1.15rem;
    height: 1.15rem;
    margin-top: 0.15rem;
    accent-color: var(--color-sky);
    cursor: pointer;
}

.deck-item__study-btn {
    grid-column: 3;
    grid-row: 1;
    justify-self: end;
    align-self: start;
    position: relative;
    z-index: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    min-width: 2.25rem;
    padding: 0;
    border-radius: var(--radius-sm);
}
.deck-item__study-btn .material-symbols-outlined { font-size: 20px; }

/* === Интенсив focus banner (home "Изучаю сейчас" block) === */

.study-focus {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.85rem;
    flex-wrap: wrap;
    padding: 0.85rem 1rem;
    border-radius: var(--radius-md);
    background: var(--color-accent-soft);
    border: 1px solid var(--color-accent);
}

.study-focus__info { display: flex; align-items: center; gap: 0.6rem; min-width: 0; }

.study-focus__badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: #fff;
    background: var(--color-accent);
    border-radius: var(--radius-full);
    padding: 0.2rem 0.6rem;
    white-space: nowrap;
}
.study-focus__badge .material-symbols-outlined { font-size: 16px; }

.study-focus__title {
    font-weight: 600;
    color: var(--color-dark);
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* === Deck Details === */

.deck-details-page {
    max-width: var(--container-narrow);
    margin: 0 auto;
}

.deck-details__hero {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1.5rem;
    padding: clamp(1.5rem, 4vw, 2.25rem);
    margin-bottom: 2rem;
    background: linear-gradient(135deg, #fff 0%, var(--color-sky-tint) 100%);
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-level1);
    position: relative;
    overflow: hidden;
}

.deck-details__hero::before {
    content: '';
    position: absolute;
    top: -40px;
    right: -40px;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, var(--color-accent-soft) 0%, transparent 70%);
    opacity: 0.6;
    pointer-events: none;
}

/* Public deck page (guest mode) */
.public-deck__author {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    flex-wrap: wrap;
    margin: 0 0 0.75rem;
    color: var(--color-on-surface-variant);
    font-weight: 500;
}
.public-deck__author .author-credit { font-size: 0.9rem; }
.public-deck__author .author-credit__avatar { width: 26px; height: 26px; }

/* Thin author chrome above the guest learning area ("Учитесь с @author"). */
.learning-with {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.35rem;
    width: 100%;
    margin: 0;
    font-size: 0.85rem;
    color: var(--color-on-surface-variant);
    min-width: 0;
}
.learning-with__author {
    color: var(--color-primary);
    font-weight: 600;
    text-decoration: none;
    overflow-wrap: anywhere;
}
.learning-with__author:hover { text-decoration: underline; }

/* Server-rendered deck contents on the public deck page (SEO-bearing term/definition list). */
.public-deck-cards { margin-top: 2.5rem; }

.public-deck-cards__title {
    margin: 0 0 1rem;
    font-size: 1.15rem;
}

.public-deck-cards__list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin: 0;
}

.public-deck-cards__item {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
    gap: 1rem;
    padding: 0.75rem 1rem;
    background: var(--color-surface);
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-md);
}

.public-deck-cards__term {
    margin: 0;
    font-weight: 600;
    overflow-wrap: anywhere;
}

.public-deck-cards__def {
    margin: 0;
    color: var(--color-on-surface-variant);
    overflow-wrap: anywhere;
}

.public-deck-cards__more {
    margin: 1rem 0 0;
    color: var(--color-on-surface-variant);
    font-size: 0.9rem;
}

@media (max-width: 640px) {
    .public-deck-cards__item { grid-template-columns: 1fr; gap: 0.25rem; }
}

.guest-cta {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    margin-top: 2rem;
    padding: clamp(1.25rem, 3vw, 1.75rem);
    background: linear-gradient(135deg, #fff 0%, var(--color-sky-tint) 100%);
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-level1);
}

.guest-cta__icon {
    font-size: 40px;
    color: var(--color-accent);
    flex-shrink: 0;
}

.guest-cta__text { flex: 1; min-width: 0; }

.guest-cta__title { margin: 0 0 0.25rem; font-size: 1.1rem; }

.guest-cta__body { margin: 0; color: var(--color-on-surface-variant); }

@media (max-width: 640px) {
    .guest-cta { flex-direction: column; align-items: flex-start; }
}

.deck-details__hero-main { flex: 1; min-width: 0; position: relative; z-index: 1; }

.deck-details__hero-badges {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
}

.deck-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.2rem 0.7rem;
    border-radius: var(--radius-full);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.deck-badge--lang {
    background: var(--color-sky);
    color: #fff;
}

.deck-badge--visibility {
    color: var(--color-on-surface-variant);
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid var(--color-outline-variant);
}

.deck-details__title {
    font-size: clamp(1.5rem, 3.5vw, 2rem);
    font-weight: 700;
    color: var(--color-dark);
    letter-spacing: -0.02em;
    margin-bottom: 0.6rem;
    line-height: 1.2;
}

.deck-details__description {
    font-size: 0.95rem;
    color: var(--color-on-surface-variant);
    line-height: 1.6;
    max-width: 540px;
    margin-bottom: 0.85rem;
}

.deck-details__tags {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
    margin-bottom: 0.85rem;
}

.deck-details__meta {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.deck-details__meta-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.85rem;
    color: var(--color-on-surface-variant);
    font-weight: 500;
}

.deck-details__meta-item .material-symbols-outlined {
    font-size: 18px;
    color: var(--color-sky);
}

.deck-details__hero-actions {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    flex-shrink: 0;
    position: relative;
    z-index: 1;
}

@media (max-width: 720px) {
    .deck-details__hero {
        flex-direction: column;
        align-items: stretch;
    }
    .deck-details__hero-actions {
        flex-direction: row;
        flex-wrap: wrap;
    }
    .deck-details__hero-actions .btn { flex: 1; min-width: 140px; }
}

/* Material Symbols base */
.material-symbols-outlined {
    font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
    vertical-align: middle;
    user-select: none;
}

/* === Card List === */

.card-list {
    padding: 0.5rem 0 0;
    margin-bottom: 1.5rem;
}

.card-list__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.25rem;
    gap: 1rem;
}

.card-list__header h2 { font-size: 1.25rem; font-weight: 700; color: var(--color-dark); }

.card-list__header-actions { display: flex; align-items: center; gap: 0.5rem; }

.card-list__empty { color: var(--color-on-surface-variant); font-size: 0.9rem; padding: 2rem 0; text-align: center; }

#card-list-items {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}

.card-item {
    padding: 1.25rem 1.5rem;
    background: #fff;
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-level1);
    transition: box-shadow var(--duration-fast) var(--ease-out),
                border-color var(--duration-fast) var(--ease-out),
                transform var(--duration-fast) var(--ease-out);
}

.card-item:hover { box-shadow: var(--shadow-level2); border-color: rgba(14, 165, 233, 0.3); transform: translateY(-1px); }

.card-item__top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    margin-bottom: 0.85rem;
}

.card-item__body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}

@media (max-width: 600px) {
    .card-item__body {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
}

.card-item__col-label {
    display: block;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-sky);
    margin-bottom: 0.35rem;
}

.card-item__term {
    font-family: var(--font-family-content);
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-dark);
    line-height: 1.35;
    letter-spacing: -0.01em;
}

.card-item__def {
    font-size: 0.92rem;
    color: var(--color-on-surface);
    line-height: 1.55;
}

.card-item__hint-row { margin-top: 0.85rem; }

.card-item__hint-label {
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    font-weight: 600;
    color: var(--color-on-surface-variant);
    margin-right: 0.35rem;
}

.card-item__hint {
    display: inline-block;
    font-size: 0.78rem;
    color: #92400E;
    background: #FEF3C7;
    padding: 0.2rem 0.6rem;
    border-radius: var(--radius-full);
    font-weight: 500;
}

.card-item__actions {
    display: flex;
    gap: 0.125rem;
    flex-shrink: 0;
    margin-left: auto;
}

/* === Icon Buttons === */

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    border: none;
    background: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    color: var(--color-on-surface-variant);
    transition: background var(--duration-fast) var(--ease-out),
                color var(--duration-fast) var(--ease-out);
    font-family: var(--font-family);
}

.btn-icon:hover {
    background: var(--color-sky-tint);
    color: var(--color-dark);
}

.btn-icon .material-symbols-outlined { font-size: 20px; }

.btn-icon--danger:hover {
    background: rgba(220, 38, 38, 0.08);
    color: var(--color-error);
}

/* === Author Dashboard === */

.dashboard-page {
    display: flex;
    flex-direction: column;
    gap: clamp(1.5rem, 4vw, 2.25rem);
}

.dashboard-header__title {
    font-size: clamp(1.5rem, 4vw, 2rem);
    font-weight: 700;
    color: var(--color-dark);
}

.dashboard-header__subtitle {
    margin-top: 0.35rem;
    color: var(--color-on-surface-variant);
    font-size: 0.95rem;
}

.dashboard-section {
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
}

.dashboard-section__label {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-on-surface-variant);
}

.dashboard-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    text-align: center;
    padding: clamp(2rem, 6vw, 3.5rem);
    background: #fff;
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-level1);
    color: var(--color-on-surface-variant);
}

.dashboard-empty__icon {
    font-size: 48px;
    color: var(--color-sky);
}

.dashboard-note {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--color-on-surface-variant);
    background: var(--color-sky-tint);
    border-radius: var(--radius-md);
    padding: 0.7rem 0.9rem;
}

.dashboard-note .material-symbols-outlined { font-size: 20px; color: var(--color-sky); }

/* Section head with a label + inline hint (learner dashboard sections) */
.dashboard-section__head {
    display: flex;
    align-items: baseline;
    gap: 0.6rem;
    flex-wrap: wrap;
}

.dashboard-section__hint {
    font-size: 0.8rem;
    color: var(--color-outline);
}

/* Dashboard tabs — switch between "My learning" and "My decks" */
.dashboard-tabs {
    display: flex;
    gap: 0.4rem;
    border-bottom: 1px solid var(--color-outline-variant);
}

.dashboard-tab {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.65rem 1rem;
    border: none;
    background: none;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-on-surface-variant);
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: color 0.15s ease, border-color 0.15s ease;
}

.dashboard-tab .material-symbols-outlined { font-size: 19px; }

.dashboard-tab:hover { color: var(--color-dark); }

.dashboard-tab--active {
    color: var(--color-sky);
    border-bottom-color: var(--color-sky);
}

.dashboard-tabpanel {
    display: flex;
    flex-direction: column;
    gap: clamp(1.5rem, 4vw, 2.25rem);
    margin-top: clamp(1.5rem, 4vw, 2.25rem);
}

/* Daily activity chart — honest per-day review volume (not a streak) */
.activity-chart {
    display: flex;
    align-items: flex-end;
    gap: 3px;
    height: 96px;
    padding: 0.5rem 0.75rem;
    background: #fff;
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-level1);
}

.activity-chart__col {
    flex: 1 1 0;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    height: 100%;
    min-width: 0;
}

.activity-chart__bar {
    width: 100%;
    max-width: 14px;
    min-height: 2px;
    border-radius: 3px 3px 0 0;
    background: var(--color-sky);
    transition: opacity 0.15s ease;
}

.activity-chart__col:hover .activity-chart__bar { opacity: 0.78; }

.activity-chart__bar--empty {
    height: 2px !important;
    background: var(--color-outline-variant);
}

.activity-summary {
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem;
    font-size: 0.85rem;
    color: var(--color-on-surface-variant);
}

.activity-summary__item strong {
    color: var(--color-dark);
    font-weight: 700;
}

/* Maturity + due summary line inside a learner deck drill-down */
.analytics-maturity-line {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem 1rem;
    align-items: center;
    font-size: 0.82rem;
    color: var(--color-on-surface-variant);
    padding-bottom: 0.85rem;
    margin-bottom: 0.85rem;
    border-bottom: 1px solid var(--color-outline-variant);
}

.analytics-maturity-line .progress-maturity__dot { margin-right: 0.3rem; }

.analytics-maturity-line__due { margin-left: auto; }

.analytics-maturity-line__due strong { color: var(--color-dark); font-weight: 700; }

/* KPI tiles — portfolio totals */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 0.75rem;
}

.kpi {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    padding: 1rem 1.1rem;
    background: #fff;
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-level1);
}

.kpi--accent {
    background: var(--color-sky-tint);
    border-color: var(--color-sky-soft);
}

.kpi__value {
    font-size: 1.9rem;
    font-weight: 700;
    line-height: 1.05;
    color: var(--color-dark);
    letter-spacing: -0.02em;
}

.kpi__unit { font-size: 1.1rem; font-weight: 600; margin-left: 1px; }

.kpi__label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-on-surface-variant);
}

.kpi__caption { font-size: 0.72rem; color: var(--color-outline); }

/* Per-deck analytics rows */
.deck-analytics-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.deck-analytics {
    background: #fff;
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-level1);
    padding: clamp(1rem, 3vw, 1.4rem);
}

.deck-analytics__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.deck-analytics__title-wrap {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex-wrap: wrap;
    min-width: 0;
}

.deck-analytics__title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-dark);
}

.deck-analytics__title:hover { color: var(--color-sky); }

.deck-analytics > .progress-maturity--compact {
    margin-top: 0.8rem;
}

.deck-badge--muted {
    background: var(--color-surface-container-high);
    color: var(--color-on-surface-variant);
}

.deck-analytics__metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(72px, 1fr));
    gap: 0.5rem;
    margin-top: 1rem;
}

.metric {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.1rem;
    padding: 0.55rem 0.3rem;
    background: var(--color-surface-container-low);
    border-radius: var(--radius-md);
}

.metric__value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-dark);
    line-height: 1.1;
}

.metric__label {
    font-size: 0.68rem;
    font-weight: 600;
    color: var(--color-on-surface-variant);
    text-align: center;
}

.deck-analytics__detail {
    margin-top: 1.1rem;
    padding-top: 1.1rem;
    border-top: 1px solid var(--color-outline-variant);
}

/* === Deck analytics detail (shared: dashboard drill-down + deck page panel) === */

.stats-panel { margin-top: 1.5rem; }
.stats-panel__body { margin-top: 0.25rem; }

.analytics-subsection + .analytics-subsection {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--color-outline-variant);
}

.analytics-subsection__title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--color-dark);
}

.analytics-subsection__hint {
    margin: 0.15rem 0 0.85rem;
    font-size: 0.8rem;
    color: var(--color-on-surface-variant);
}

.analytics-loading,
.analytics-empty {
    font-size: 0.85rem;
    color: var(--color-on-surface-variant);
    padding: 0.5rem 0;
}

/* Difficult/all-cards view toggle */
.analytics-view-toggle {
    display: inline-flex;
    gap: 0.25rem;
    padding: 0.2rem;
    margin-bottom: 0.85rem;
    background: var(--color-surface-container-low);
    border-radius: 999px;
}

.analytics-view-toggle__btn {
    border: none;
    background: none;
    padding: 0.35rem 0.9rem;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-on-surface-variant);
    cursor: pointer;
    transition: background-color 0.15s ease, color 0.15s ease;
}

.analytics-view-toggle__btn:hover { color: var(--color-dark); }

.analytics-view-toggle__btn--active {
    background: var(--color-surface);
    color: var(--color-sky);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.06);
}

/* Difficult cards */
.analytics-card-list { display: flex; flex-direction: column; gap: 0.5rem; }

.analytics-card-row {
    display: grid;
    grid-template-columns: minmax(0, 1.6fr) minmax(110px, 0.9fr) auto;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem 0.75rem;
    background: var(--color-surface-container-low);
    border-radius: var(--radius-md);
}

.analytics-card-row__main { display: flex; flex-direction: column; min-width: 0; }

.analytics-card-row__front {
    font-weight: 600;
    color: var(--color-on-surface);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.analytics-card-row__back {
    font-size: 0.8rem;
    color: var(--color-on-surface-variant);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.analytics-card-row__acc { display: flex; align-items: center; gap: 0.5rem; }

.analytics-card-row__stats {
    display: flex;
    gap: 0.7rem;
    font-size: 0.78rem;
    color: var(--color-on-surface-variant);
}

.analytics-card-row__stats span {
    display: inline-flex;
    align-items: center;
    gap: 0.2rem;
}

.analytics-card-row__stats .material-symbols-outlined { font-size: 15px; }

/* Accuracy bar */
.analytics-bar {
    flex: 1;
    height: 7px;
    min-width: 48px;
    background: var(--color-surface-container-high);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.analytics-bar__fill { height: 100%; border-radius: var(--radius-full); transition: width var(--duration-slow) var(--ease-out); }

.analytics-acc--low  { background: var(--color-error); }
.analytics-acc--mid  { background: var(--color-accent); }
.analytics-acc--high { background: var(--color-feedback-correct-text); }

.analytics-acc-pct { font-size: 0.8rem; font-weight: 700; min-width: 38px; text-align: right; }
.analytics-acc-pct.analytics-acc--low  { color: var(--color-error); background: none; }
.analytics-acc-pct.analytics-acc--mid  { color: var(--color-feedback-hard-text); background: none; }
.analytics-acc-pct.analytics-acc--high { color: var(--color-feedback-correct-text); background: none; }

/* Accuracy by mode */
.analytics-mode-list { display: flex; flex-direction: column; gap: 0.55rem; }

.analytics-mode-row {
    display: grid;
    grid-template-columns: minmax(90px, 1fr) minmax(60px, 2fr) auto auto;
    align-items: center;
    gap: 0.6rem;
}

.analytics-mode-row__name { font-size: 0.85rem; font-weight: 600; color: var(--color-on-surface); }

.analytics-mode-row__reviews {
    font-size: 0.78rem;
    color: var(--color-on-surface-variant);
    min-width: 34px;
    text-align: right;
}

@media (max-width: 540px) {
    .analytics-card-row {
        grid-template-columns: 1fr;
        gap: 0.4rem;
    }
    .analytics-card-row__stats { gap: 1rem; }
}

/* === Learning Format Views === */

.flip-view {
    width: 100%;
    flex: 1;
    text-align: center;
    padding: clamp(1rem, 3vw, 1.75rem);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border-radius: var(--radius-lg);
    transition: background var(--duration-fast) var(--ease-out);
    /* Anchor the absolutely-positioned children (flip hint, Context cue) to the box itself. */
    position: relative;
}

.flip-view:hover { background: var(--color-sky-tint); }

/* Revealed state: stack the demoted stimulus above the answer so the learner
   re-encodes the full pair instead of the answer in isolation. Column layout and
   the divider apply only post-flip — the un-flipped card keeps centring its prompt. */
.flip-view--revealed {
    flex-direction: column;
    gap: 0.75rem;
}

/* The stimulus once the answer is shown: smaller and lower-contrast than the answer
   (still .card-prompt on .flip-view__back), with a divider echoing Anki's question/
   answer rule. Keeps the answer the hero while re-presenting the cue for context. */
.flip-view__cue {
    font-family: var(--font-family-content);
    font-size: clamp(1.1rem, 2.6vw, 1.35rem);
    font-weight: 500;
    line-height: 1.25;
    color: var(--color-on-surface-variant);
    text-align: center;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--color-outline-variant);
}

/* Corner affordance: a quiet flip icon that says "this card has a back side"
   without competing with the word for attention. Removed once revealed. */
.flip-view__hint {
    position: absolute;
    bottom: 10px;
    right: 12px;
    font-size: 20px;
    color: var(--color-on-surface-variant);
    opacity: 0.5;
    pointer-events: none;
}

/* Inset the keyboard focus ring: the card fills .card-stage__body (overflow: auto), so a
   positive outline-offset is clipped by that box into bare corner arcs. A negative offset
   keeps the ring inside the clip box, showing it as one clean rounded rectangle. */
.flip-view:focus-visible { outline: 2px solid var(--color-sky); outline-offset: -3px; }

/* Self-assessment reveal recolours the answer in place; padding/border are part of
   .card-prompt sizing so the swap does not change the prompt's footprint. */
.flip-view__back--correct { background: var(--color-feedback-correct-bg); border-radius: var(--radius-md); padding: 0.5rem 1rem; color: var(--color-feedback-correct-text); }
.flip-view__back--hard    { background: var(--color-feedback-hard-bg);    border-radius: var(--radius-md); padding: 0.5rem 1rem; color: var(--color-feedback-hard-text); }
.flip-view__back--wrong   { background: var(--color-feedback-wrong-bg);   border-radius: var(--radius-md); padding: 0.5rem 1rem; color: var(--color-feedback-wrong-text); }

.self-assessment {
    display: flex;
    justify-content: center;
    gap: 0.6rem;
    flex-wrap: wrap;
}

/* The reveal focuses this group (tabindex="-1") only to capture the keyboard flow so the
   Space that flipped can't leak through and grade the card — it is never a user-navigable
   target, so suppress the UA outline that would otherwise frame the buttons in black. */
.self-assessment:focus { outline: none; }

.mc-view__options {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.5rem;
    width: 100%;
}

.mc-view__option-wrap {
    position: relative;
    min-width: 0;
}

.mc-view__option {
    display: block;
    width: 100%;
    position: relative;
    min-width: 0;
    min-height: 46px;
    padding: 0.65rem 2.25rem 0.65rem 0.9rem;
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-md);
    background: #fff;
    cursor: pointer;
    text-align: left;
    font-size: 0.9rem;
    line-height: 1.25;
    font-family: var(--font-family);
    color: var(--color-on-surface);
    overflow-wrap: anywhere;
    transition: background var(--duration-fast) var(--ease-out),
                border-color var(--duration-fast) var(--ease-out);
}

.mc-view__option-wrap--with-audio .mc-view__option {
    padding-right: 4.6rem;
}

.mc-view__option:hover { background: var(--color-sky-tint); border-color: var(--color-sky); }
.mc-view__option:focus-visible { outline: 2px solid var(--color-sky); outline-offset: 2px; }
.mc-view__option--selected { background: var(--color-sky-soft); border-color: var(--color-sky); }
.mc-view__option--correct  { background: #DCFCE7; border-color: #10B981; color: #166534; }
.mc-view__option--wrong    { background: var(--color-error-container); border-color: var(--color-error); color: var(--color-on-error-container); }

/* Color-independent correctness markers (accessibility: never colour alone). */
.mc-view__option--correct::after,
.mc-view__option--wrong::after {
    position: absolute;
    top: 50%;
    right: 0.85rem;
    transform: translateY(-50%);
    font-weight: 700;
    font-size: 1.1rem;
}
.mc-view__option--correct::after { content: '\2713'; }
.mc-view__option--wrong::after   { content: '\2717'; }

.mc-view__audio {
    position: absolute;
    top: 50%;
    right: 2.4rem;
    z-index: 1;
    width: 1.55rem;
    height: 1.55rem;
    margin-left: 0;
    font-size: 0.78rem;
    transform: translateY(-50%);
}

.mc-view__audio:active {
    transform: translateY(-50%) scale(0.92);
}

@media (max-width: 560px) {
    .mc-view__options {
        grid-template-columns: 1fr;
    }
}

.pair-view {
    display: flex;
    gap: clamp(0.75rem, 3vw, 2rem);
    justify-content: center;
    flex-wrap: wrap;
    width: 100%;
}

.pair-view__column {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.pair-view__item {
    position: relative;
    padding: 0.65rem 1rem;
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-md);
    cursor: pointer;
    text-align: center;
    min-width: 120px;
    background: #fff;
    color: var(--color-on-surface);
    font-weight: 500;
    transition: background var(--duration-fast) var(--ease-out),
                border-color var(--duration-fast) var(--ease-out),
                transform var(--duration-fast) var(--ease-out);
}

.pair-view__item:hover { background: var(--color-sky-tint); border-color: var(--color-sky); }
.pair-view__item:focus-visible { outline: 2px solid var(--color-sky); outline-offset: 2px; }
.pair-view__item--active { border-color: var(--color-sky); background: var(--color-sky-soft); }
.pair-view__item--matched { background: #DCFCE7; border-color: #6EE7B7; pointer-events: none; color: #166534; }
.pair-view__item--matched::after { content: '\2713'; position: absolute; top: 0.35rem; right: 0.5rem; font-weight: 700; font-size: 0.85rem; }
.pair-view__item--wrong { background: var(--color-error-container); border-color: var(--color-error); }
.pair-view__item--wrong.pair-view__item--active { border-color: var(--color-sky); }

/* In cloze the sentence with the gap is the stimulus, so it leads; the front is a
   small contextual lead-in above it (never the other way round). */
.cloze-view__front {
    font-family: var(--font-family-content);
    font-size: clamp(1.5rem, 4vw, 1.9rem);
    font-weight: 600;
    color: rgb(12, 74, 110);
    margin-bottom: 0.75rem;
    text-align: center;
}

.cloze-view__text {
    font-size: clamp(1.3rem, 3.5vw, 1.55rem);
    line-height: 2;
    color: var(--color-on-surface);
    text-align: center;
}

.cloze-view__blank {
    width: 120px;
    padding: 0.25rem 0.5rem;
    border: none;
    border-bottom: 2px solid var(--color-sky);
    font-size: clamp(1.3rem, 3.5vw, 1.55rem);
    font-family: var(--font-family);
    text-align: center;
    background: transparent;
    color: var(--color-dark);
    font-weight: 500;
}

.cloze-view__blank:focus { outline: none; border-bottom-width: 2.5px; }
.cloze-view__blank--correct { border-color: #10B981; color: #166534; }
.cloze-view__blank--almost { border-color: #F59E0B; color: #92400E; }
.cloze-view__blank--incorrect { border-color: var(--color-error); color: var(--color-on-error-container); }

.cloze-view__blank-answer {
    margin-left: 0.4rem;
    font-size: 0.82rem;
    color: #166534;
    background: #DCFCE7;
    border-radius: var(--radius-full);
    padding: 0.15rem 0.5rem;
    font-weight: 500;
}

/* Cloze Choice mode */
.cloze-choice-view__text {
    font-size: clamp(1.3rem, 3.5vw, 1.55rem);
    line-height: 2.2;
    margin-bottom: 0.5rem;
    color: var(--color-on-surface);
    text-align: center;
}

.cloze-choice-view__blank {
    display: inline-block;
    min-width: 80px;
    padding: 0.1rem 0.5rem;
    border-bottom: 2px solid var(--color-sky);
    text-align: center;
    font-style: italic;
    color: var(--color-sky);
    font-weight: 500;
}

.cloze-choice-view__blank--correct { border-color: #10B981; color: #166534; font-style: normal; }
.cloze-choice-view__blank--incorrect { border-color: var(--color-error); color: var(--color-on-error-container); font-style: normal; }

.cloze-choice-view__options { margin-bottom: 1.25rem; }

.cloze-choice-view__options-group {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 0.85rem;
}

.cloze-choice-view__option {
    padding: 0.5rem 1.1rem;
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-full);
    background: #fff;
    cursor: pointer;
    font-size: 0.92rem;
    font-family: var(--font-family);
    font-weight: 500;
    color: var(--color-on-surface);
    transition: background var(--duration-fast) var(--ease-out),
                border-color var(--duration-fast) var(--ease-out);
}

.cloze-choice-view__option:hover { background: var(--color-sky-tint); border-color: var(--color-sky); }
.cloze-choice-view__option--selected { background: var(--color-sky-soft); border-color: var(--color-sky); color: var(--color-dark); }
.cloze-choice-view__option--correct { background: #DCFCE7; border-color: #10B981; color: #166534; }
.cloze-choice-view__option--incorrect { background: var(--color-error-container); border-color: var(--color-error); }
.cloze-choice-view__option--correct::after   { content: '\00a0\2713'; font-weight: 700; }
.cloze-choice-view__option--incorrect::after { content: '\00a0\2717'; font-weight: 700; }

.sb-view__prompt {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    text-align: center;
    color: var(--color-dark);
    font-weight: 500;
}

.sb-view__answer {
    min-height: 52px;
    border: 2px dashed var(--color-outline-variant);
    border-radius: var(--radius-md);
    padding: 0.6rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
    background: var(--color-surface-container-low);
}

.sb-view__words {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.sb-view__word {
    padding: 0.45rem 0.85rem;
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-md);
    background: #fff;
    cursor: pointer;
    font-family: var(--font-family);
    font-weight: 500;
    transition: background var(--duration-fast) var(--ease-out);
}

.sb-view__word:hover { background: var(--color-sky-tint); }
.sb-view__word--used { opacity: 0.3; }

.sb-view__placed {
    padding: 0.45rem 0.85rem;
    background: var(--color-sky-soft);
    border-radius: var(--radius-md);
    cursor: pointer;
    color: var(--color-dark);
    font-weight: 500;
}

.type-view__input {
    width: 100%;
    max-width: 420px;
    padding: 0.85rem 1rem;
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-md);
    font-size: 1.05rem;
    font-family: var(--font-family);
    color: var(--color-on-surface);
    background: #fff;
    outline: none;
    text-align: center;
    transition: border-color var(--duration-fast) var(--ease-out),
                box-shadow var(--duration-fast) var(--ease-out);
}

.type-view__input:focus {
    border-color: var(--color-sky);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.18);
}

.type-view__input--correct   { border-color: var(--color-feedback-correct-text); color: var(--color-feedback-correct-text); }
.type-view__input--almost    { border-color: var(--color-feedback-hard-text);    color: var(--color-feedback-hard-text); }
.type-view__input--incorrect { border-color: var(--color-error);                 color: var(--color-on-error-container); }

/* User-initiated advance: the learner reads the result, then continues when ready
   (no auto-timeout that whisks the card away before the mistake is understood). */
.card-stage__next {
    min-width: 180px;
}

.cloze-view,
.cloze-choice-view {
    width: 100%;
}

/* === Rule QA Pairs === */

.rule-qa-pair {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.rule-qa-pair input { flex: 1; }

/* === Card Form Modal === */

.card-form-modal__content {
    max-width: 720px;
    width: 100%;
    padding: 0;
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.card-form-modal__content > .modal__header {
    padding: 1.5rem 1.75rem 0.5rem;
    margin-bottom: 0;
    align-items: flex-start;
}

.card-form-modal__content > .modal__header .modal__title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-dark);
    letter-spacing: -0.02em;
    line-height: 1.25;
}

.card-form-modal__content > .modal__body {
    padding: 0;
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-height: 0;
    scrollbar-width: thin;
    scrollbar-color: var(--color-outline-variant) transparent;
}

.card-form-modal__content > .modal__body::-webkit-scrollbar {
    width: 8px;
}

.card-form-modal__content > .modal__body::-webkit-scrollbar-track {
    background: transparent;
}

.card-form-modal__content > .modal__body::-webkit-scrollbar-thumb {
    background: var(--color-outline-variant);
    border-radius: var(--radius-full);
    border: 2px solid transparent;
    background-clip: padding-box;
}

.card-form-modal__content > .modal__body::-webkit-scrollbar-thumb:hover {
    background: var(--color-outline);
    background-clip: padding-box;
    border: 2px solid transparent;
}

.card-form__subtitle {
    padding: 0 1.75rem 1rem;
    font-size: 0.9rem;
    color: var(--color-on-surface-variant);
    margin: 0;
}

.card-form__tabs {
    margin: 0 1.75rem 0;
    background: var(--color-surface-container);
    padding: 4px;
    border-radius: var(--radius-md);
}

.card-form__tabs .tab-switcher__tab {
    padding: 0.55rem 1rem;
    margin-right: 0;
    font-size: 0.85rem;
}

.card-form {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
}

#card-form-tab-form {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
}

.card-form__scroll {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--color-outline-variant) transparent;
}

.card-form__scroll::-webkit-scrollbar {
    width: 8px;
}

.card-form__scroll::-webkit-scrollbar-track {
    background: transparent;
}

.card-form__scroll::-webkit-scrollbar-thumb {
    background: var(--color-outline-variant);
    border-radius: var(--radius-full);
    border: 2px solid transparent;
    background-clip: padding-box;
}

.card-form__scroll::-webkit-scrollbar-thumb:hover {
    background: var(--color-outline);
    background-clip: padding-box;
    border: 2px solid transparent;
}

.card-form__section {
    padding: 1.25rem 1.75rem;
    border-bottom: 1px solid var(--color-outline-variant);
}

.card-form__section:last-of-type {
    border-bottom: none;
}

.card-form__section .form-field:last-child {
    margin-bottom: 0;
}

.card-form__content-area {
    font-family: var(--font-family-content);
    font-size: 1rem;
    line-height: 1.55;
    min-height: 90px;
}

.card-form__format {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0;
}

.card-form__format label {
    margin-bottom: 0;
    flex-shrink: 0;
}

.card-form__format select {
    width: auto;
    flex: 1;
    max-width: 220px;
}

.form-field__label--required::after {
    content: ' *';
    color: var(--color-error);
    font-weight: 700;
}

#card-form-tab-json {
    padding: 1.25rem 1.75rem 0;
}

/* Profile selector cards */
.profile-cards {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 0.5rem;
}

.profile-card {
    flex: 1;
    min-width: 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.85rem 1rem;
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-md);
    background: #fff;
    cursor: pointer;
    transition: border-color var(--duration-fast) var(--ease-out),
                background var(--duration-fast) var(--ease-out),
                box-shadow var(--duration-fast) var(--ease-out);
}

.profile-card:hover {
    border-color: var(--color-sky);
    background: var(--color-sky-tint);
}

.profile-card:has(input:checked) {
    border-color: var(--color-sky);
    background: var(--color-sky-soft);
    box-shadow: 0 0 0 1px var(--color-sky) inset;
}

.profile-card input[type="radio"] {
    accent-color: var(--color-sky);
    flex-shrink: 0;
    margin: 0;
}

.profile-card__body {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
    min-width: 0;
}

.profile-card__name {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-on-surface);
    letter-spacing: -0.005em;
}

.profile-card:has(input:checked) .profile-card__name {
    color: var(--color-dark);
}

.profile-card__desc {
    font-size: 0.78rem;
    color: var(--color-on-surface-variant);
    line-height: 1.35;
}

/* Mode chip selector */
.mode-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.mode-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.45rem 0.95rem 0.45rem 0.75rem;
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-full);
    background: #fff;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-on-surface-variant);
    transition: background var(--duration-fast) var(--ease-out),
                color var(--duration-fast) var(--ease-out),
                border-color var(--duration-fast) var(--ease-out),
                box-shadow var(--duration-fast) var(--ease-out);
    user-select: none;
    position: relative;
}

.mode-chip:hover {
    background: var(--color-sky-tint);
    color: var(--color-dark);
    border-color: var(--color-sky);
}

.mode-chip input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
    inset: 0;
}

.mode-chip:has(input:checked) {
    background: var(--color-dark);
    border-color: var(--color-dark);
    color: #fff;
}

.mode-chip:has(input:checked):hover {
    background: var(--color-dark-hover);
    border-color: var(--color-dark-hover);
    color: #fff;
}

.mode-chip .material-symbols-outlined {
    font-size: 18px;
}

.mode-settings-panel {
    padding: 0.85rem;
    margin-top: 0.85rem;
    background: var(--color-surface-container-low);
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-md);
}

.mode-settings-panel__toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    margin-bottom: 0.85rem;
}

.mode-settings-panel__title {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--color-dark);
    font-size: 0.82rem;
    font-weight: 700;
}

.mode-settings-panel__title .material-symbols-outlined {
    font-size: 18px;
}

.mode-settings-panel__toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    flex-shrink: 0;
    min-height: 2rem;
    padding: 0.35rem 0.65rem;
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-full);
    background: #fff;
    color: var(--color-dark);
    cursor: pointer;
    font-family: var(--font-family);
    font-size: 0.78rem;
    font-weight: 600;
    line-height: 1.2;
    white-space: nowrap;
    transition: background var(--duration-fast) var(--ease-out),
                border-color var(--duration-fast) var(--ease-out),
                color var(--duration-fast) var(--ease-out);
}

.mode-settings-panel__toggle:hover {
    background: var(--color-sky-tint);
    border-color: var(--color-sky);
}

.mode-settings-panel__toggle[aria-expanded="true"] {
    background: var(--color-dark);
    border-color: var(--color-dark);
    color: #fff;
}

.mode-settings-panel__toggle .material-symbols-outlined {
    font-size: 17px;
}

.compact-mode-fields,
.mode-detail-settings__body {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}

.mode-detail-settings {
    margin: 0;
}

.compact-mode-fields .form-field,
.mode-detail-settings__body .form-field {
    margin-bottom: 0;
}

/* Tri-state mode chip (bulk edit): "mixed" state shown with a dashed border */
.mode-chip:has(input:indeterminate) {
    background: #fff;
    border-style: dashed;
    border-color: var(--color-on-surface-variant);
    color: var(--color-on-surface-variant);
}

.mode-chip:has(input:indeterminate):hover {
    background: var(--color-sky-tint);
    border-color: var(--color-sky);
    color: var(--color-dark);
}

/* Bulk edit cards modal */
.bulk-edit__section { margin-bottom: 1.25rem; }

.bulk-edit__intro { color: var(--color-on-surface-variant); font-size: 0.9rem; margin: 0 0 1rem; }

.bulk-edit__option {
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    cursor: pointer;
}

.bulk-edit__option input[type="checkbox"] { margin-top: 0.2rem; }

.bulk-edit__option-body { display: flex; flex-direction: column; gap: 0.15rem; }

.bulk-edit__option-title { font-weight: 600; color: var(--color-dark); }

.bulk-edit__error-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin: 0.75rem 0;
    max-height: 18rem;
    overflow-y: auto;
}

.bulk-edit__error-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0.6rem 0.85rem;
    border: 1px solid var(--color-error-container);
    border-radius: var(--radius-md);
    background: var(--color-error-container);
}

.bulk-edit__error-item-body { display: flex; flex-direction: column; gap: 0.2rem; min-width: 0; }

.bulk-edit__error-item-cases { font-weight: 600; color: var(--color-on-error-container); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.bulk-edit__error-item-missing { font-size: 0.8rem; color: var(--color-on-error-container); }

.bulk-edit__error-actions { flex-shrink: 0; }

/* Additional Q&A pair items */
.qa-pairs {
    margin: 0.5rem 0 0.75rem;
}

.qa-pair-item {
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-md);
    padding: 0.6rem;
    margin-bottom: 0.5rem;
    background: #fff;
    transition: border-color var(--duration-fast) var(--ease-out);
}

.qa-pair-item:hover {
    border-color: var(--color-sky);
}

.qa-pair-item__row {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.qa-pair-item__input {
    flex: 1;
    min-width: 0;
    padding: 0.55rem 0.75rem;
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-default);
    font-size: 0.9rem;
    font-family: var(--font-family);
    color: var(--color-on-surface);
    outline: none;
    transition: border-color var(--duration-fast) var(--ease-out),
                box-shadow var(--duration-fast) var(--ease-out);
    background: #fff;
}

.qa-pair-item__input:focus {
    border-color: var(--color-sky);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.18);
}

.qa-pair-item__remove {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border: none;
    background: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    color: var(--color-on-surface-variant);
    transition: background var(--duration-fast) var(--ease-out),
                color var(--duration-fast) var(--ease-out);
}

.qa-pair-item__remove:hover {
    background: rgba(220, 38, 38, 0.08);
    color: var(--color-error);
}

.qa-pair-item__remove .material-symbols-outlined {
    font-size: 18px;
}

/* Sticky footer for primary actions */
.card-form__footer {
    flex-shrink: 0;
    z-index: 2;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 0.6rem;
    padding: 1rem 1.75rem;
    background: var(--color-surface-container-low);
    border-top: 1px solid var(--color-outline-variant);
    margin-top: auto;
}

.card-form__footer .btn--primary {
    padding: 0.65rem 1.5rem;
}

.modal__content--edge-footer .card-form__footer {
    margin: 1rem -1.75rem -1.75rem;
}

.modal__content.card-form-modal__content.modal__content--json-mode {
    max-width: 760px;
}

.modal__content.card-form-modal__content.modal__content--json-mode #card-form-tab-json {
    padding-bottom: 0;
}

.modal__content.card-form-modal__content.modal__content--json-mode .card-form__footer {
    border-top: 1px solid var(--color-outline-variant);
}

/* === Card Preview Modal === */

.modal__content--wide {
    max-width: 880px;
}

.card-preview {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.card-preview__cases {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding-bottom: 0.85rem;
    border-bottom: 1px solid var(--color-outline-variant);
}

.card-preview__tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.card-preview__tab {
    padding: 0.4rem 0.95rem;
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-full);
    background: #fff;
    font-size: 0.85rem;
    font-family: var(--font-family);
    font-weight: 500;
    color: var(--color-on-surface-variant);
    cursor: pointer;
    transition: background var(--duration-fast) var(--ease-out),
                border-color var(--duration-fast) var(--ease-out),
                color var(--duration-fast) var(--ease-out);
}

.card-preview__tab:hover {
    background: var(--color-sky-tint);
    border-color: var(--color-sky);
    color: var(--color-dark);
}

.card-preview__tab--active {
    background: var(--color-sky-soft);
    border-color: var(--color-sky);
    color: var(--color-dark);
    font-weight: 600;
}

.card-form-json-editor {
    width: 100%;
    min-height: 320px;
    font-family: 'JetBrains Mono', 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.82rem;
    line-height: 1.55;
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-md);
    padding: 0.85rem;
    resize: vertical;
    box-sizing: border-box;
    color: var(--color-on-surface);
    background: var(--color-surface-container-low);
    outline: none;
}

.modal__content--json-mode {
    height: 85vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.modal__content--json-mode .modal__header { flex-shrink: 0; }

.modal__content--json-mode .modal__body {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-height: 0;
}

.modal__content--json-mode .tab-switcher { flex-shrink: 0; }

.modal__content--json-mode #card-form-tab-json {
    flex: 1;
    display: flex !important;
    flex-direction: column;
    min-height: 0;
}

.modal__content--json-mode .card-form-json-editor {
    flex: 1;
    min-height: 0;
    resize: none;
}

.card-form-json-editor:focus {
    border-color: var(--color-sky);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.18);
    background: #fff;
}

/* === AI enrich modal === */
.card-form__ai-btn {
    margin-top: 0.25rem;
}

.ai-enrich__intro {
    margin: 0 0 1rem;
    font-size: 0.9rem;
    color: var(--color-on-surface-variant);
}

.ai-enrich__copy {
    margin-top: 0.5rem;
}

.ai-enrich__footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.6rem;
    margin-top: 1.25rem;
}

#ai-enrich-modal .card-form-json-editor {
    min-height: 0;
}

#ai-enrich-prompt {
    min-height: 190px;
}

#ai-enrich-response {
    min-height: 120px;
}

.card-preview__container {
    /* Fixed height so the preview card stays the same size across modes and states;
       the body scrolls when content is taller (e.g. 6-pair Match). */
    height: 420px;
    padding: 1.25rem;
    background: var(--color-surface-container-low);
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-lg);
    /* The card stage: instruction / body / footer stacked, body grows, footer reserved. */
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.card-preview__notice {
    color: var(--color-on-surface-variant);
    font-size: 0.9rem;
    text-align: center;
    padding: 2rem 1rem;
}

/* === Responsive polish === */

@media (max-width: 480px) {
    .page-container {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .modal__content { padding: 1.25rem; }
    .card-form-modal__content { padding: 0; }
    .card-form-modal__content > .modal__header { padding: 1.25rem 1.25rem 0.4rem; }
    .card-form__section { padding: 1rem 1.25rem; }
    .card-form__subtitle { padding: 0 1.25rem 0.85rem; }
    .card-form__tabs { margin: 0 1.25rem; }
    .card-form__footer { padding: 0.85rem 1.25rem; }
    .modal__content--edge-footer .card-form__footer { margin: 1rem -1.25rem -1.25rem; }
    #card-form-tab-json { padding: 1rem 1.25rem 0; }

    .deck-details__hero { padding: 1.25rem; }

    .profile-cards { flex-direction: column; }
}

/* === Profile page (/profile) === */

.profile-page {
    max-width: 640px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.profile-page__head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.25rem;
}

.profile-page__logout {
    flex-shrink: 0;
    align-self: center;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-on-surface-variant);
    padding: 0.4rem 0.85rem;
    border-radius: var(--radius-full);
    border: 1px solid var(--color-outline);
    transition: color var(--duration-fast) var(--ease-out),
                border-color var(--duration-fast) var(--ease-out),
                background var(--duration-fast) var(--ease-out);
}

.profile-page__logout:hover {
    color: var(--color-error);
    border-color: var(--color-error);
    background: rgba(220, 38, 38, 0.06);
}

.profile-page__title {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--color-dark);
    letter-spacing: -0.02em;
}

.profile-page__subtitle {
    margin-top: 0.35rem;
    color: var(--color-on-surface-variant);
    font-size: 0.92rem;
}

.profile-card {
    display: block;
    flex: unset;
    min-width: unset;
    align-items: unset;
    gap: unset;
    cursor: unset;
    background: #fff;
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-lg);
    padding: clamp(1.25rem, 3vw, 1.75rem);
    box-shadow: var(--shadow-level1);
}

.profile-card__header {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-bottom: 1.25rem;
}

.profile-card__header h2 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-dark);
    letter-spacing: -0.01em;
}

.profile-card__icon {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-default);
    background: var(--color-sky-soft);
    color: var(--color-sky);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.profile-card__icon .material-symbols-outlined { font-size: 20px; }

.profile-card__note {
    margin-top: 0.85rem;
    color: var(--color-on-surface-variant);
    font-size: 0.85rem;
    line-height: 1.5;
}

/* === Error page === */

.error-page {
    min-height: calc(100vh - 180px);
    display: grid;
    place-items: center;
    padding: clamp(2rem, 8vw, 5rem) 0;
}

.error-card {
    width: min(100%, 560px);
    background: #fff;
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-level2);
    padding: clamp(1.5rem, 5vw, 2.25rem);
    text-align: center;
}

.error-card__icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 1rem;
    border-radius: var(--radius-default);
    background: var(--color-sky-soft);
    color: var(--color-sky);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.error-card__icon .material-symbols-outlined {
    font-size: 30px;
}

.error-card__code {
    color: var(--color-accent);
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.error-card__title {
    margin-top: 0.35rem;
    font-size: clamp(1.7rem, 4vw, 2.25rem);
}

.error-card__message {
    max-width: 420px;
    margin: 0.75rem auto 0;
    color: var(--color-on-surface-variant);
    font-size: 0.98rem;
}

.error-card__actions {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-top: 1.5rem;
}

.error-card__actions .material-symbols-outlined {
    font-size: 20px;
}

.error-card__request {
    margin-top: 1.25rem;
    color: var(--color-on-surface-variant);
    font-size: 0.78rem;
}

.error-card__request code {
    color: var(--color-dark);
    overflow-wrap: anywhere;
}

/* Account data card — two-column layout: avatar/picker left, form right */
.profile-card[data-component="profile-form"] {
    display: grid;
    grid-template-columns: auto 1fr;
    column-gap: 2rem;
    align-items: start;
}

.profile-card[data-component="profile-form"] .profile-card__header {
    grid-column: 1 / -1;
}

.profile-card[data-component="profile-form"] .profile-identity {
    grid-column: 1;
    margin-bottom: 0.75rem;
}

.profile-card[data-component="profile-form"] .avatar-picker {
    grid-column: 1;
    margin-bottom: 0;
}

.profile-card[data-component="profile-form"] #profile-name-form {
    grid-column: 2;
    grid-row: 2 / span 99;
    align-self: start;
}

/* --- Deck link-sharing (Unlisted decks) --- */
.deck-share-panel {
    background: #fff;
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-lg);
    padding: clamp(1rem, 2.5vw, 1.5rem);
    box-shadow: var(--shadow-level1);
    margin-bottom: 1.5rem;
}

.deck-share-panel__head {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 0.875rem;
}

.deck-share-panel__head .material-symbols-outlined {
    color: var(--color-sky);
}

.deck-share-panel__title {
    font-size: 1.05rem;
    margin: 0 0 0.15rem;
}

.deck-share-panel__hint {
    margin: 0;
    color: var(--color-on-surface-variant);
    font-size: 0.9rem;
}

.deck-share-panel__row {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.deck-share-panel__url {
    flex: 1 1 16rem;
    min-width: 0;
    padding: 0.55rem 0.75rem;
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-md);
    background: var(--color-sky-tint);
    font-family: monospace;
    font-size: 0.85rem;
}

.deck-share-panel__stats-note {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    margin: 0.875rem 0 0;
    color: var(--color-on-surface-variant);
    font-size: 0.875rem;
}

.deck-share-panel__stats-note .material-symbols-outlined {
    font-size: 1.1rem;
}

/* Consent checkbox on the share landing */
.deck-share-consent {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--color-on-surface-variant);
    max-width: 22rem;
    margin-bottom: 0.5rem;
    cursor: pointer;
}

/* Learner's stats-sharing consent control on the deck page */
.deck-consent {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    padding: 0.75rem 1rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-md);
    background: var(--color-sky-tint);
}

.deck-consent .material-symbols-outlined {
    color: var(--color-sky);
}

.deck-consent__text {
    flex: 1;
    font-size: 0.9rem;
    color: var(--color-on-surface-variant);
}

/* --- Per-learner analytics table --- */
.analytics-learners {
    margin-top: 1.5rem;
}

.learners-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.learners-table th,
.learners-table td {
    text-align: left;
    padding: 0.5rem 0.625rem;
    border-bottom: 1px solid var(--color-outline-variant);
}

.learners-table th {
    color: var(--color-on-surface-variant);
    font-weight: 600;
}

.learners-table td:not(.learners-table__name) {
    text-align: right;
    font-variant-numeric: tabular-nums;
}

.learners-table th:not(:first-child) {
    text-align: right;
}

.learners-table__name {
    font-weight: 500;
}

.form-field__help {
    display: block;
    margin-top: 0.3rem;
    font-size: 0.8rem;
    color: var(--color-on-surface-variant);
    line-height: 1.4;
}

.form-field input[type="email"]:disabled {
    background: var(--color-surface-container-low);
    color: var(--color-on-surface-variant);
    cursor: default;
}

@media (max-width: 600px) {
    .profile-card[data-component="profile-form"] {
        grid-template-columns: 1fr;
    }
    .profile-card[data-component="profile-form"] .profile-identity,
    .profile-card[data-component="profile-form"] .avatar-picker,
    .profile-card[data-component="profile-form"] #profile-name-form {
        grid-column: 1;
        grid-row: auto;
    }
    .avatar-picker {
        width: 100%;
        grid-template-columns: repeat(6, 1fr);
    }
    .avatar-picker__option {
        width: auto;
        height: auto;
        aspect-ratio: 1;
    }
}

/* Account identity row */
.profile-identity {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.profile-avatar {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-sky) 0%, var(--color-dark) 100%);
    border: 2px solid #fff;
    box-shadow: 0 2px 6px rgba(12, 74, 110, 0.18);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 600;
    overflow: hidden;
    flex-shrink: 0;
}

.profile-avatar--lg { width: 80px; height: 80px; }
.profile-avatar--lg .profile-avatar__initials { font-size: 1.9rem; }
.profile-avatar--lg .profile-avatar__glyph { font-size: 2.4rem; }

.profile-avatar__initials { font-size: 1rem; line-height: 1; }
.profile-avatar__glyph { font-size: 1.4rem; line-height: 1; }

.profile-identity__meta {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    align-items: flex-start;
}

.profile-identity__name {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--color-on-surface);
}

/* Avatar picker grid */
.avatar-picker {
    display: grid;
    grid-template-columns: repeat(6, 2.5rem);
    gap: 0.5rem;
    padding: 0.75rem;
    margin-bottom: 1.25rem;
    background: var(--color-surface-container-low);
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-md);
    width: fit-content;
}

.avatar-picker__option {
    width: 2.5rem;
    height: 2.5rem;
    border: 2px solid transparent;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-sky) 0%, var(--color-dark) 100%);
    color: #fff;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--duration-fast) var(--ease-out),
                box-shadow var(--duration-fast) var(--ease-out);
}

.avatar-picker__option .profile-avatar__glyph { font-size: 1.1rem; }
.avatar-picker__option .profile-avatar__initials { font-size: 0.85rem; }

.avatar-picker__option:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(12, 74, 110, 0.22);
}

.avatar-picker__option--active {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 2px var(--color-accent-soft);
}

@media (max-width: 480px) {
    .avatar-picker { grid-template-columns: repeat(4, 1fr); }
}

/* Linked accounts */
.linked-accounts {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.linked-accounts__row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.85rem 1rem;
    background: var(--color-surface-container-low);
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-md);
}

.linked-accounts__provider {
    display: flex;
    align-items: center;
    gap: 0.7rem;
}

.linked-accounts__badge {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
    font-size: 0.95rem;
}

.linked-accounts__badge--google { background: #ea4335; }
.linked-accounts__badge--facebook { background: #1877f2; }

.linked-accounts__name { font-weight: 600; color: var(--color-on-surface); }

.linked-accounts__status {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.linked-accounts__state { font-size: 0.82rem; font-weight: 500; }
.linked-accounts__state--on { color: var(--color-feedback-correct-text); }
.linked-accounts__state--off { color: var(--color-on-surface-variant); }

/* Radio group (language) */
.radio-group {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.radio-option {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.65rem 1.1rem;
    border: 1.5px solid var(--color-outline-variant);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: border-color var(--duration-fast) var(--ease-out),
                background var(--duration-fast) var(--ease-out);
}

.radio-option:has(input:checked) {
    border-color: var(--color-accent);
    background: var(--color-accent-soft);
}

.radio-option__label { font-weight: 500; font-size: 0.9rem; }

/* Learning mode checkboxes */
.mode-prefs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.6rem;
}

@media (max-width: 480px) {
    .mode-prefs { grid-template-columns: 1fr; }
}

.mode-prefs__option {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.65rem 0.85rem;
    background: var(--color-surface-container-low);
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: border-color var(--duration-fast) var(--ease-out);
}

.mode-prefs__option:has(input:checked) {
    border-color: var(--color-sky);
    background: var(--color-sky-tint);
}

.mode-prefs__option input { width: 16px; height: 16px; accent-color: var(--color-accent); }

/* Avatar photo — fills the circle in both navbar and profile card */
.navbar__avatar-img,
.profile-avatar__photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-full);
    display: block;
}

/* Upload row inside the avatar picker grid */
.avatar-picker__upload-row {
    grid-column: 1 / -1;
    display: flex;
    justify-content: flex-start;
    padding-bottom: 0.25rem;
    border-bottom: 1px solid var(--color-outline-variant);
    margin-bottom: 0.25rem;
}

/* Crop modal */
.crop-modal {
    position: fixed;
    inset: 0;
    z-index: 400;
    display: flex;
    align-items: center;
    justify-content: center;
}

.crop-modal[hidden] { display: none; }

.crop-modal__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.65);
}

.crop-modal__dialog {
    position: relative;
    z-index: 1;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    width: min(540px, 95vw);
    display: flex;
    flex-direction: column;
    gap: 1rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.crop-modal__title {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 0;
}

.crop-modal__canvas-wrap {
    border-radius: var(--radius-md);
    overflow: hidden;
    background: #000;
    line-height: 0;
}

.crop-modal__canvas-wrap canvas {
    width: 100%;
    height: auto;
    display: block;
    touch-action: none;
    user-select: none;
}

.crop-modal__hint {
    font-size: 0.82rem;
    color: var(--color-on-surface-variant);
    margin: 0;
    text-align: center;
}

.crop-modal__actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
}
.mode-prefs__label { font-size: 0.9rem; font-weight: 500; }

/* === Public author page (creator-growth P1.1) === */

.author-page {
    width: min(100%, var(--container-wide));
    margin: 0 auto;
    padding: clamp(1.5rem, 4vw, 2.5rem) 0 var(--space-section);
    display: flex;
    flex-direction: column;
    gap: clamp(1.5rem, 4vw, 2.5rem);
}

.author-hero {
    display: flex;
    gap: clamp(1rem, 3vw, 2rem);
    align-items: center;
    flex-wrap: wrap;
}

.author-hero__avatar {
    width: 104px;
    height: 104px;
    border-radius: var(--radius-full);
    background: var(--color-sky-soft);
    color: var(--color-sky);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    flex-shrink: 0;
    box-shadow: var(--shadow-level1);
}

.author-hero__photo { width: 100%; height: 100%; object-fit: cover; }
.author-hero__glyph { font-size: 3rem; line-height: 1; }
.author-hero__initials { font-size: 2.4rem; font-weight: 700; color: var(--color-dark); }

.author-hero__identity { flex: 1; min-width: 240px; }

.author-hero__name {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: clamp(1.6rem, 4vw, 2.2rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--color-dark);
    margin: 0;
}

.author-badge--verified { color: var(--color-sky); display: inline-flex; }
.author-badge--verified .material-symbols-outlined {
    font-size: 1.4rem;
    font-variation-settings: "FILL" 1;
}

.author-hero__handle {
    color: var(--color-on-surface-variant);
    font-size: 1rem;
    margin: 0.1rem 0 0;
}

.author-hero__tagline {
    font-family: var(--font-family-content);
    font-size: clamp(1.05rem, 2.5vw, 1.3rem);
    color: var(--color-on-surface);
    margin: 0.6rem 0 0;
}

.author-hero__cta { margin-top: 1.1rem; }
.author-hero__hook {
    margin: 0.6rem 0 0;
    font-size: 0.88rem;
    color: var(--color-on-surface-variant);
    max-width: 46ch;
    line-height: 1.5;
}

.author-proof {
    display: flex;
    flex-wrap: wrap;
    gap: clamp(1.25rem, 4vw, 2.75rem);
    padding: 1.1rem clamp(1rem, 3vw, 1.5rem);
    background: var(--color-surface-container-low);
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-lg);
}

.author-proof__item { display: flex; flex-direction: column; }
.author-proof__value { font-size: 1.5rem; font-weight: 800; color: var(--color-dark); line-height: 1; }
.author-proof__label { font-size: 0.8rem; color: var(--color-on-surface-variant); margin-top: 0.2rem; }

.author-bio {
    font-family: var(--font-family-content);
    font-size: 1.05rem;
    line-height: 1.7;
    color: var(--color-on-surface);
    max-width: var(--container-narrow);
}
.author-bio p { margin: 0; white-space: pre-line; }

.author-links { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.author-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.45rem 0.85rem;
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-full);
    background: #fff;
    color: var(--color-dark);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: capitalize;
    text-decoration: none;
    transition: border-color var(--duration-fast) var(--ease-out),
                box-shadow var(--duration-fast) var(--ease-out);
}
.author-link:hover { border-color: var(--color-sky); box-shadow: var(--shadow-level1); }
.author-link__icon { font-size: 1.1rem; color: var(--color-on-surface-variant); }
.author-link__check {
    font-size: 1rem;
    color: var(--color-sky);
    font-variation-settings: "FILL" 1;
}

.author-decks__title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-dark);
    margin: 0 0 1rem;
}
.author-decks__empty { color: var(--color-on-surface-variant); }

.author-decks__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1rem;
}

.author-deck-card {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 1.1rem;
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-lg);
    background: #fff;
    text-decoration: none;
    color: inherit;
    box-shadow: var(--shadow-level1);
    transition: transform var(--duration-fast) var(--ease-out),
                box-shadow var(--duration-fast) var(--ease-out),
                border-color var(--duration-fast) var(--ease-out);
}
.author-deck-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-level2);
    border-color: var(--color-sky);
}
.author-deck-card--pinned { border-color: var(--color-accent); }

.author-deck-card__pin {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--color-accent);
}
.author-deck-card__pin .material-symbols-outlined { font-size: 1rem; }

.author-deck-card__title { font-size: 1.05rem; font-weight: 700; color: var(--color-dark); margin: 0; }
.author-deck-card__desc {
    font-size: 0.88rem;
    color: var(--color-on-surface-variant);
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.author-deck-card__meta {
    margin-top: auto;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--color-on-surface-variant);
}

.author-footer-cta { display: flex; justify-content: center; padding-top: 0.5rem; }

/* === Author profile editor (on /profile) === */

.profile-card__lead {
    margin: -0.5rem 0 1.1rem;
    color: var(--color-on-surface-variant);
    font-size: 0.9rem;
    line-height: 1.5;
}

.author-checklist {
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-md);
    background: var(--color-surface-container-low);
    padding: 0.9rem 1rem;
    margin-bottom: 1.25rem;
}
.author-checklist__head { display: flex; justify-content: space-between; align-items: baseline; }
.author-checklist__title { font-weight: 700; font-size: 0.9rem; color: var(--color-dark); }
.author-checklist__count { font-size: 0.85rem; color: var(--color-on-surface-variant); font-weight: 600; }
.author-checklist__bar {
    height: 6px;
    border-radius: var(--radius-full);
    background: var(--color-surface-container-high);
    margin: 0.6rem 0 0.8rem;
    overflow: hidden;
}
.author-checklist__fill {
    height: 100%;
    width: 0;
    background: var(--color-sky);
    border-radius: var(--radius-full);
    transition: width var(--duration-base) var(--ease-out);
}
.author-checklist__items { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.35rem; }
.author-checklist__item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--color-on-surface-variant);
}
.author-checklist__item .material-symbols-outlined { font-size: 1.15rem; color: var(--color-outline); }
.author-checklist__item--done { color: var(--color-on-surface); }
.author-checklist__item--done .material-symbols-outlined {
    color: var(--color-feedback-correct-text);
    font-variation-settings: "FILL" 1;
}

.author-preview-row { margin: 0 0 1.25rem; }
.author-preview-link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-sky);
    text-decoration: none;
}
.author-preview-link:hover { text-decoration: underline; }
.author-preview-link .material-symbols-outlined { font-size: 1.1rem; }

.author-handle-input {
    display: flex;
    align-items: center;
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-md);
    overflow: hidden;
    background: #fff;
}
.author-handle-input:focus-within {
    border-color: var(--color-sky);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.18);
}
.author-handle-input__at {
    padding: 0 0.2rem 0 0.85rem;
    color: var(--color-on-surface-variant);
    font-weight: 600;
}
.author-handle-input input {
    flex: 1;
    border: none !important;
    box-shadow: none !important;
    padding-left: 0.2rem !important;
}

.author-social-links { display: flex; flex-direction: column; gap: 0.55rem; margin: 0.5rem 0; }
.author-social-link-row { display: flex; align-items: center; gap: 0.5rem; }
.author-social-link-row__input {
    flex: 1;
    padding: 0.6rem 0.85rem;
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-family: var(--font-family);
    color: var(--color-on-surface);
    background: #fff;
    outline: none;
}
.author-social-link-row__input:focus {
    border-color: var(--color-sky);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.18);
}
.author-social-link-row__status { flex-shrink: 0; }
.author-social-link-row__remove {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    color: var(--color-on-surface-variant);
    font-size: 1.4rem;
    line-height: 1;
    cursor: pointer;
    border-radius: var(--radius-default);
}
.author-social-link-row__remove:hover { background: var(--color-error-container); color: var(--color-on-error-container); }

.author-verified-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--color-feedback-correct-text);
}
.author-verified-badge .material-symbols-outlined { font-size: 1rem; font-variation-settings: "FILL" 1; }

.form-field--inline .switch { display: inline-flex; align-items: center; gap: 0.5rem; font-weight: 600; cursor: pointer; }
.form-field--inline .switch input { width: auto; }
.form-field--inline .switch input:disabled + span { color: var(--color-outline); cursor: not-allowed; }

.sr-only {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ===== Landing page (anonymous home) ===== */
.btn--large { padding: 0.85rem 1.6rem; font-size: 1.02rem; }

.landing {
    max-width: 1100px;
    margin-inline: auto;
    padding: clamp(1.5rem, 4vw, 3rem) 1.25rem clamp(3rem, 6vw, 5rem);
    display: flex;
    flex-direction: column;
    gap: var(--space-section);
}

/* Hero */
.landing-hero {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
    gap: clamp(1.5rem, 4vw, 3.5rem);
}
.landing-hero__eyebrow {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: var(--color-accent);
    background: var(--color-accent-soft);
    padding: 0.3rem 0.75rem;
    border-radius: var(--radius-full);
    margin-bottom: 1rem;
}
.landing-hero__title {
    font-size: clamp(2rem, 5vw, 3.2rem);
    line-height: 1.08;
    letter-spacing: -0.02em;
    margin: 0 0 1rem;
    color: var(--color-on-surface);
}
.landing-hero__subtitle {
    font-size: clamp(1rem, 1.6vw, 1.2rem);
    line-height: 1.55;
    color: var(--color-on-surface-variant);
    max-width: 38ch;
    margin: 0 0 1.75rem;
}
.landing-hero__actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.landing-hero__note {
    margin: 1rem 0 0;
    font-size: 0.85rem;
    color: var(--color-on-surface-variant);
}

/* Hero visual: a small stack of flashcards */
.landing-hero__visual {
    position: relative;
    min-height: 280px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.landing-card {
    position: absolute;
    width: min(320px, 78%);
    border-radius: var(--radius-lg);
    background: var(--color-surface);
    box-shadow: var(--shadow-level2);
    border: 1px solid var(--color-outline-variant);
}
.landing-card--back {
    height: 200px;
    transform: rotate(-8deg) translateY(8px);
    background: var(--color-sky-soft);
    opacity: 0.7;
}
.landing-card--mid {
    height: 200px;
    transform: rotate(5deg) translateY(4px);
    background: var(--color-sand);
    opacity: 0.85;
}
.landing-card--front {
    position: relative;
    min-height: 200px;
    padding: 1.75rem 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 0.9rem;
    box-shadow: var(--shadow-level3);
}
.landing-card__face {
    font-family: var(--font-family-content);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-primary);
}
.landing-card__divider { height: 1px; background: var(--color-outline-variant); }
.landing-card__back {
    font-family: var(--font-family-content);
    font-size: 1rem;
    line-height: 1.5;
    color: var(--color-on-surface-variant);
}

/* Sections */
.landing-section { display: flex; flex-direction: column; gap: 1.5rem; }
.landing-section--tint {
    background: var(--color-sky-tint);
    border: 1px solid var(--color-sky-soft);
    border-radius: var(--radius-xl);
    padding: clamp(1.75rem, 4vw, 3rem);
}
.landing-section__title {
    font-size: clamp(1.5rem, 3vw, 2rem);
    letter-spacing: -0.01em;
    margin: 0;
    text-align: center;
}
.landing-section__lead {
    margin: -0.5rem auto 0;
    max-width: 56ch;
    text-align: center;
    color: var(--color-on-surface-variant);
}
.landing-section__head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}
.landing-section__head .landing-section__title { text-align: left; }
.landing-section__link {
    color: var(--color-sky);
    font-weight: 600;
    text-decoration: none;
    white-space: nowrap;
}
.landing-section__link:hover { color: var(--color-dark); text-decoration: underline; }

/* How it works — 3 steps */
.landing-steps {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}
.landing-step {
    background: var(--color-surface);
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-level1);
}
.landing-step__num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem; height: 2rem;
    border-radius: var(--radius-full);
    background: var(--color-primary);
    color: var(--color-on-primary);
    font-weight: 700;
    margin-bottom: 0.9rem;
}
.landing-step__title { font-size: 1.1rem; margin: 0 0 0.4rem; }
.landing-step__body { margin: 0; color: var(--color-on-surface-variant); line-height: 1.5; }

/* Learning modes */
.landing-modes {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
}
.landing-mode {
    background: var(--color-surface);
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-lg);
    padding: 1.5rem 1.25rem;
    text-align: center;
}
.landing-mode__icon {
    font-size: 2rem;
    color: var(--color-sky);
}
.landing-mode__name { font-size: 1.05rem; margin: 0.6rem 0 0.4rem; }
.landing-mode__desc { margin: 0; font-size: 0.9rem; color: var(--color-on-surface-variant); line-height: 1.45; }

/* Final CTA */
.landing-final {
    text-align: center;
    background: var(--color-primary);
    color: var(--color-on-primary);
    border-radius: var(--radius-xl);
    padding: clamp(2.5rem, 5vw, 4rem) 1.5rem;
}
.landing-final__title { font-size: clamp(1.6rem, 3.5vw, 2.4rem); margin: 0 0 0.75rem; color: #fff; }
.landing-final__body {
    margin: 0 auto 1.75rem;
    max-width: 50ch;
    color: var(--color-primary-fixed);
    line-height: 1.55;
}
.landing-final__actions { display: flex; flex-wrap: wrap; gap: 0.75rem; justify-content: center; }
.landing-final .btn--link { color: var(--color-primary-fixed); }
.landing-final .btn--link:hover { color: #fff; }

@media (max-width: 760px) {
    .landing-hero { grid-template-columns: 1fr; }
    .landing-hero__visual { min-height: 240px; order: -1; }
    .landing-steps { grid-template-columns: 1fr; }
}

/* ===========================================================================
   AI deck generation (modal "Create with AI" + BYO prompt flow)
   =========================================================================== */

/* Accent button — the headline "Create with AI" action, sky-toned to stand
   apart from primary (orange "Create") and secondary (outline "Import"). */
.btn--accent {
    background: var(--color-sky);
    color: #fff;
    box-shadow: 0 4px 12px rgba(14, 165, 233, 0.22);
}
.btn--accent:hover {
    background: #0284C7;
    box-shadow: 0 6px 18px rgba(14, 165, 233, 0.32);
    transform: translateY(-1px);
    color: #fff;
}
.btn--accent:active { transform: translateY(0); box-shadow: 0 2px 6px rgba(14, 165, 233, 0.2); }

/* A short numeric field (card count) sitting next to wider inputs. */
.form-field--narrow { flex: 0 0 5.5rem; }

.ai-deck__row {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    align-items: flex-end;
}
.ai-deck__row .form-field { flex: 1 1 8rem; }

.ai-deck__actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
    margin-top: 1rem;
}

.ai-deck__plan-meta { color: var(--color-text-muted, #64748b); font-size: 0.85rem; margin: 0.25rem 0 0.75rem; }

.ai-deck__clarify-box {
    background: var(--color-accent-soft);
    border-radius: var(--radius-default);
    padding: 0.75rem 1rem;
    margin-bottom: 1rem;
}
.ai-deck__clarify-box ul { margin: 0.4rem 0; padding-left: 1.2rem; }
.ai-deck__clarify-box small { color: var(--color-text-muted, #64748b); }

.ai-deck__outline {
    max-height: 40vh;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    margin: 0.5rem 0;
}
.ai-deck__outline-row { display: flex; gap: 0.4rem; align-items: center; }
.ai-deck__outline-row input { flex: 1 1 0; }
.ai-deck__outline-remove {
    flex: 0 0 auto;
    background: none;
    border: none;
    font-size: 1.25rem;
    line-height: 1;
    color: var(--color-text-muted, #94a3b8);
    cursor: pointer;
    padding: 0 0.35rem;
}
.ai-deck__outline-remove:hover { color: var(--color-error, #DC2626); }

.ai-deck__busy {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-top: 1rem;
    color: var(--color-dark);
    font-weight: 600;
}
.ai-deck__spinner {
    width: 1.1rem;
    height: 1.1rem;
    border: 2px solid var(--color-accent-soft);
    border-top-color: var(--color-sky);
    border-radius: 50%;
    animation: ai-deck-spin 0.7s linear infinite;
}
@keyframes ai-deck-spin { to { transform: rotate(360deg); } }