:root {
    color-scheme: dark;
    --bg: #0b0d14;
    --bg-raise: #121621;
    --card-bg: rgba(20, 24, 36, 0.88);
    --card-border: rgba(255, 255, 255, 0.08);
    --card-border-hover: rgba(167, 139, 250, 0.42);
    --ink: #f7f7fb;
    --muted: #a5a7b5;
    --faint: #74788d;
    --accent: #8b5cf6;
    --accent-strong: #a78bfa;
    --accent-soft: rgba(139, 92, 246, 0.16);
    --accent-glow: rgba(139, 92, 246, 0.30);
    --gold: #fbbf24;
    --danger: #f87171;
    --shadow: 0 1px 0 rgba(255, 255, 255, 0.05) inset, 0 14px 36px rgba(0, 0, 0, 0.35);
    --serif: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
    --sans: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;

    /* Fluent UI dark tokens */
    --neutral-layer-1: #151926;
    --neutral-layer-2: #1b2030;
    --neutral-layer-3: #23293a;
    --neutral-layer-4: #2c3346;
    --neutral-fill-layer-rest: #151926;
    --fill-color: #151926;
    --neutral-foreground-rest: #f2f3f5;
    --neutral-foreground-hover: #ffffff;
    --neutral-foreground-active: #f2f3f5;
    --neutral-foreground-hint: #a6acb9;
    --neutral-stroke-rest: rgba(255, 255, 255, 0.12);
    --neutral-stroke-hover: rgba(255, 255, 255, 0.22);
    --neutral-stroke-active: rgba(255, 255, 255, 0.28);
    --neutral-fill-input-rest: #10131d;
    --neutral-fill-input-hover: #151a27;
    --neutral-fill-input-focus: #10131d;
    --neutral-fill-stealth-rest: transparent;
    --neutral-fill-stealth-hover: rgba(255, 255, 255, 0.07);
    --neutral-fill-stealth-active: rgba(255, 255, 255, 0.11);
    --neutral-fill-secondary-rest: rgba(255, 255, 255, 0.09);
    --neutral-fill-secondary-hover: rgba(255, 255, 255, 0.13);
}

html,
body {
    min-height: 100%;
    max-width: 100%;
    margin: 0;
    overflow-x: hidden;
    background:
        radial-gradient(1000px 520px at 8% -8%, rgba(139, 92, 246, 0.15), transparent 55%),
        radial-gradient(860px 460px at 108% -4%, rgba(236, 72, 153, 0.07), transparent 50%),
        radial-gradient(760px 620px at 50% 125%, rgba(99, 102, 241, 0.08), transparent 60%),
        linear-gradient(180deg, #111521 0%, var(--bg) 48%);
    color: var(--ink);
    font-family: var(--sans);
    font-size: 16px;
    line-height: 1.6;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    opacity: 0.10;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.35'/%3E%3C/svg%3E");
    z-index: 0;
}

::selection {
    background: rgba(139, 92, 246, 0.38);
    color: #ffffff;
}

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: #3a4150;
    border-radius: 8px;
    border: 2px solid var(--bg);
}

::-webkit-scrollbar-thumb:hover {
    background: #4a5265;
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: 4px;
}

#components-reconnect-modal {
    z-index: 10000;
}

.page-body {
    position: relative;
    z-index: 1;
    padding: 2.25rem 1.25rem calc(4rem + env(safe-area-inset-bottom, 0px));
    max-width: 1180px;
    width: 100%;
    margin: 0 auto;
    box-sizing: border-box;
    overflow-x: visible !important;
    height: auto !important;
}

.page-body:has(.auth-shell),
.page-body:has(.login-experience),
.page-body:has(.admin-experience) {
    max-width: none;
    padding: 0;
}

.page {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    min-width: 0;
    max-width: 100%;
}

.page-head {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    margin-bottom: 0.25rem;
}

.page-head-row {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.kicker {
    margin: 0;
    color: var(--accent);
    font-size: 0.76rem;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

h1,
.page-title,
fluent-label[typo="pagetitle"] {
    margin: 0;
    font-family: var(--serif);
    font-size: clamp(1.8rem, 3vw, 2.35rem);
    font-weight: 700;
    line-height: 1.25;
    letter-spacing: -0.01em;
    color: var(--ink);
}

h2,
.section-title,
fluent-label[typo="header"] {
    margin: 0 0 0.4rem;
    font-family: var(--serif);
    font-size: 1.18rem;
    font-weight: 700;
    color: var(--ink);
}

h2 > svg {
    vertical-align: -0.18em;
    margin-right: 0.45rem;
}

.lede,
fluent-label[typo="body"] {
    color: var(--muted);
}

.lede {
    margin: 0;
    max-width: 40rem;
}

a {
    color: var(--accent);
}

.back-link {
    width: fit-content;
    color: var(--muted) !important;
    font-size: 0.92rem;
    transition: color 0.15s ease;
}

.back-link:hover {
    color: var(--accent-strong) !important;
}

h1:focus,
h1:focus-visible {
    outline: none;
}

/* ---------- message bars ---------- */

/* Fluent's static SSR markup initially uses its light message-bar surfaces.
   Pin both sides of the contrast pair so the dark application tokens cannot
   produce light text on a light background before interactivity starts. */
.fluent-messagebar {
    --neutral-foreground-rest: #f8fafc;
    --neutral-fill-strong-active: #f8fafc;
    color: #f8fafc !important;
    opacity: 1 !important;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.22);
}

.fluent-messagebar[animation="fadein"] {
    animation: none !important;
}

.fluent-messagebar.intent-info,
.fluent-messagebar.intent-custom {
    background-color: #273244 !important;
    border-color: #64748b !important;
}

.fluent-messagebar.intent-success {
    background-color: #052e16 !important;
    border-color: #34d399 !important;
}

.fluent-messagebar.intent-warning {
    background-color: #422006 !important;
    border-color: #fbbf24 !important;
}

.fluent-messagebar.intent-error {
    background-color: #450a0a !important;
    border-color: #f87171 !important;
}

.fluent-messagebar.intent-info .fluent-messagebar-icon,
.fluent-messagebar.intent-custom .fluent-messagebar-icon {
    color: #cbd5e1;
}

.fluent-messagebar.intent-success .fluent-messagebar-icon {
    color: #6ee7b7;
}

.fluent-messagebar.intent-warning .fluent-messagebar-icon {
    color: #fcd34d;
}

.fluent-messagebar.intent-error .fluent-messagebar-icon {
    color: #fca5a5;
}

.fluent-messagebar .fluent-messagebar-icon svg,
.fluent-messagebar .fluent-messagebar-close {
    fill: currentColor !important;
}

.fluent-messagebar fluent-anchor,
.fluent-messagebar a {
    color: #a7f3d0 !important;
}

/* ---------- header / nav ---------- */

header.site-header,
fluent-header.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(11, 13, 20, 0.82) !important;
    backdrop-filter: blur(14px) saturate(1.5);
    -webkit-backdrop-filter: blur(14px) saturate(1.5);
    color: var(--ink) !important;
    min-height: 64px;
    height: 64px !important;
    padding: 0 1.5rem !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    --fill-color: rgba(11, 13, 20, 0.82);
    --neutral-fill-rest: transparent;
    --neutral-foreground-rest: var(--ink);
    --accent-foreground-rest: var(--ink);
    --neutral-fill-stealth-rest: transparent;
    --neutral-fill-stealth-hover: rgba(255, 255, 255, 0.07);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    font-family: var(--serif);
    font-size: clamp(0.95rem, 2vw, 1.4rem);
    font-weight: 700;
    color: var(--ink) !important;
    text-decoration: none;
    letter-spacing: 0.05em;
    flex-shrink: 0;
    white-space: nowrap;
}

.brand svg {
    fill: var(--accent) !important;
    filter: drop-shadow(0 0 10px var(--accent-glow));
}

.nav {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.site-header-spacer {
    flex: 1 1 auto;
}

.nav-logout {
    display: contents;
}

.nav fluent-anchor,
.nav-user {
    color: #d4d4d8 !important;
    font-size: 0.92rem;
}

.nav-user {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0 0.6rem;
    color: var(--muted) !important;
}

.nav-user svg {
    fill: var(--faint) !important;
}

/* ---------- cards ---------- */

fluent-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    box-shadow: var(--shadow);
    padding: 1.25rem 1.35rem;
    margin: 0;
    max-width: 100%;
    min-width: 0;
    overflow: visible;
    box-sizing: border-box;
    backdrop-filter: blur(6px);
    transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

fluent-card.lesson-editor-card {
    --lesson-card-tint: rgba(52, 211, 153, 0.06);
    --lesson-card-edge: #34d399;
    position: relative;
    background:
        linear-gradient(135deg, var(--lesson-card-tint), transparent 58%),
        var(--card-bg);
    border-left: 4px solid var(--lesson-card-edge);
}

fluent-card.lesson-editor-card--tone-2 {
    --lesson-card-tint: rgba(96, 165, 250, 0.07);
    --lesson-card-edge: #60a5fa;
}

fluent-card.lesson-editor-card--tone-3 {
    --lesson-card-tint: rgba(167, 139, 250, 0.07);
    --lesson-card-edge: #a78bfa;
}

fluent-card.lesson-editor-card--tone-4 {
    --lesson-card-tint: rgba(251, 191, 36, 0.065);
    --lesson-card-edge: #fbbf24;
}

.lesson-card-heading {
    display: flex;
    align-items: baseline;
    gap: 0.75rem;
    margin: -0.1rem 0 1.15rem;
    padding-bottom: 0.8rem;
    border-bottom: 1px solid color-mix(in srgb, var(--lesson-card-edge) 34%, transparent);
}

.lesson-card-number {
    flex: 0 0 auto;
    color: var(--lesson-card-edge);
    font-size: 1.08rem;
    font-weight: 800;
    letter-spacing: 0.04em;
}

.lesson-card-title {
    min-width: 0;
    color: var(--ink);
    font-size: 0.95rem;
    font-weight: 600;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

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

.course-card {
    display: flex;
    flex-direction: column;
    min-height: 220px;
    height: 100%;
}

.course-card:hover {
    transform: translateY(-3px);
    border-color: var(--card-border-hover);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05) inset, 0 22px 48px rgba(0, 0, 0, 0.55);
}

.course-card p {
    margin: 0.35rem 0 0.7rem;
    color: var(--muted);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}

.course-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.35rem 0.9rem;
    font-size: 0.86rem;
    color: var(--muted);
    margin-bottom: 0.7rem;
}

.course-meta span {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}

.course-meta svg {
    fill: var(--faint) !important;
}

.course-card-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    margin-top: auto;
    padding-top: 0.85rem;
    border-top: 1px solid var(--card-border);
}

.lesson-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.lesson-row-main {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.badge-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.badge-row fluent-badge {
    display: inline-flex;
    align-items: center;
}

.badge-row fluent-badge svg {
    fill: currentColor !important;
    margin-right: 0.25rem;
    vertical-align: -0.15em;
}

/* ---------- player ---------- */

.player-wrap {
    overflow: hidden;
    padding: 0.6rem;
    background: #000000;
    border-color: rgba(255, 255, 255, 0.10);
    box-shadow: 0 0 0 1px rgba(52, 211, 153, 0.06), 0 24px 60px rgba(0, 0, 0, 0.6);
}

.protected-player { position: relative; background: #000; border-radius: 10px; overflow: hidden; }
.protected-player:fullscreen { width: 100vw; height: 100vh; display: grid; place-items: center; }
.protected-player:fullscreen .player-frame { width: 100vw; height: 100vh; }
.viewer-watermark {
    position: absolute; z-index: 5; pointer-events: none; max-width: 52%;
    color: rgba(255,255,255,.72); background: rgba(0,0,0,.22); padding: .35rem .55rem;
    border-radius: .35rem; font-size: clamp(.68rem, 1.4vw, 1rem); letter-spacing: .03em;
    text-shadow: 0 1px 3px #000; transition: inset .8s ease, transform .8s ease;
}
.viewer-watermark[data-position="top-left"] { top: 8%; left: 5%; }
.viewer-watermark[data-position="top-right"] { top: 8%; right: 5%; }
.viewer-watermark[data-position="center"] { top: 48%; left: 50%; transform: translate(-50%,-50%); }
.viewer-watermark[data-position="bottom-left"] { bottom: 12%; left: 5%; }
.viewer-watermark[data-position="bottom-right"] { bottom: 12%; right: 5%; }
.recording-warning { color: #fde68a; font-size: .82rem; margin: .55rem .35rem 0; }
.player-fullscreen { position: absolute; z-index: 6; right: .75rem; bottom: .75rem; }

.player-frame {
    width: 100%;
    aspect-ratio: 16 / 9;
    border: 0;
    background: #000;
    border-radius: 10px;
    display: block;
}

/* ---------- auth ---------- */

.auth-shell {
    min-height: calc(100vh - 64px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 2rem 1rem 4rem;
}

.brand-mark {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    margin: 0;
    font-family: var(--serif);
    font-size: 2rem;
    color: var(--ink);
}

.brand-mark fluent-icon {
    color: var(--accent);
    filter: drop-shadow(0 0 14px var(--accent-glow));
}

.auth-card {
    width: min(420px, 100%);
    box-shadow: 0 0 90px rgba(139, 92, 246, 0.10), var(--shadow);
}

.auth-card .lede,
.auth-card fluent-label[typo="body"] {
    display: block;
    margin: 0.35rem 0 1rem;
}

.auth-card fluent-stack,
.form-stack {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    min-width: 0;
    max-width: 100%;
}

.field-label {
    display: block;
    font-size: 0.85rem;
    color: var(--muted);
}

.field {
    display: block;
    width: 100%;
    max-width: 100%;
    min-width: 0;
    box-sizing: border-box;
    min-height: 8.5rem;
    padding: 0.75rem 0.85rem;
    border: 1px solid var(--neutral-stroke-rest);
    border-radius: 10px;
    background: var(--neutral-fill-input-rest);
    color: var(--ink);
    font-family: inherit;
    font-size: 16px;
    line-height: 1.55;
    resize: vertical;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.field:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.18);
}

.field-sm {
    min-height: 6.5rem;
}

.auth-card fluent-button,
.form-stack fluent-button {
    margin-top: 0.35rem;
}

.auth-follow {
    display: inline-block;
    margin-top: 1rem;
}

/* ---------- buttons ---------- */

fluent-button[appearance="accent"],
fluent-anchor[appearance="accent"] {
    filter: drop-shadow(0 4px 16px rgba(139, 92, 246, 0.24));
}

fluent-button svg,
fluent-anchor svg {
    fill: currentColor !important;
}

/* ---------- empty states ---------- */

.empty {
    background: var(--card-bg);
    border: 1px dashed rgba(255, 255, 255, 0.14);
    border-radius: 16px;
    padding: 2.6rem 1.5rem;
    text-align: center;
}

.empty-icon {
    fill: var(--faint) !important;
    margin-bottom: 0.6rem;
}

.empty-title {
    margin: 0 0 0.35rem;
    font-family: var(--serif);
    font-size: 1.35rem;
}

.empty-copy {
    margin: 0;
    color: var(--muted);
}

/* ---------- progress ---------- */

.progress-list {
    list-style: none;
    margin: 0.8rem 0 0;
    padding: 0;
}

.progress-list li {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.5rem 0;
    border-top: 1px solid var(--card-border);
    font-size: 0.95rem;
}

.progress-list li:first-child {
    border-top: 0;
}

.done {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    color: var(--accent);
    font-weight: 600;
}

.done svg {
    fill: var(--accent) !important;
}

.muted {
    color: var(--muted);
}

.teacher-actions {
    display: flex;
    gap: 0.6rem;
    margin-top: 0.85rem;
}

.form-block + .form-block,
.form-block + fluent-card,
fluent-card + fluent-card {
    margin-top: 0;
}

/* ---------- inputs ---------- */

input[type="file"] {
    display: block;
    margin: 0.75rem 0;
    font-family: var(--sans);
    color: var(--muted);
}

input[type="file"]::file-selector-button {
    background: var(--neutral-layer-3);
    color: var(--ink);
    border: 1px solid var(--neutral-stroke-rest);
    border-radius: 8px;
    padding: 0.42rem 0.95rem;
    margin-right: 0.75rem;
    font-family: inherit;
    font-size: 0.9rem;
    cursor: pointer;
    transition: background 0.15s ease, border-color 0.15s ease;
}

input[type="file"]::file-selector-button:hover {
    background: var(--neutral-layer-4);
    border-color: var(--neutral-stroke-hover);
}

fluent-text-field,
fluent-text-area,
fluent-number-field {
    width: 100% !important;
    max-width: 100%;
    min-width: 0 !important;
    display: block;
    box-sizing: border-box;
}

fluent-text-area::part(control),
fluent-text-field::part(control) {
    width: 100%;
    max-width: 100%;
    min-width: 0;
    font-size: 16px;
}

/* ---------- sitewide experience primitives ---------- */

.auth-shell:not(:has(.login-card)) {
    position: relative;
    isolation: isolate;
    min-height: calc(100vh - 64px);
    padding: clamp(2rem, 6vw, 5rem) 1rem;
    background:
        radial-gradient(circle at 50% 8%, rgba(139, 92, 246, 0.16), transparent 28%),
        radial-gradient(circle at 90% 82%, rgba(79, 70, 229, 0.08), transparent 26%);
}

.auth-shell:not(:has(.login-card))::before {
    content: "";
    position: absolute;
    z-index: -1;
    width: 28rem;
    height: 28rem;
    top: 12%;
    left: 50%;
    transform: translateX(-50%);
    border: 1px solid rgba(167, 139, 250, 0.06);
    border-radius: 50%;
    box-shadow: 0 0 0 5rem rgba(139, 92, 246, 0.012);
}

.auth-shell:not(:has(.login-card)) .brand-mark {
    font-size: 1.35rem;
    font-weight: 800;
}

.auth-shell:not(:has(.login-card)) .brand-mark fluent-icon {
    display: grid;
    width: 2.45rem;
    height: 2.45rem;
    place-items: center;
    border-radius: 12px;
    color: #fff;
    background: linear-gradient(145deg, #9b75ff, #6d3ee9);
}

.auth-shell:not(:has(.login-card)) .auth-card,
.account-card {
    width: min(34rem, 100%);
    padding: clamp(1.4rem, 4vw, 2.25rem);
    border-radius: 22px;
    background: rgba(18, 22, 33, 0.90);
    box-shadow: 0 26px 70px rgba(0, 0, 0, 0.35), 0 0 60px rgba(139, 92, 246, 0.055);
}

.auth-shell:not(:has(.login-card)) .auth-card h1 {
    margin-bottom: 0.4rem;
    font-size: clamp(1.65rem, 3vw, 2rem);
}

.account-experience,
.detail-experience,
.teacher-experience,
.watch-experience {
    width: 100%;
    min-width: 0;
}

.page-shell,
.narrow-shell {
    display: flex;
    width: min(760px, 100%);
    min-width: 0;
    flex-direction: column;
    gap: 1.25rem;
    margin: 0 auto;
}

.narrow-shell > fluent-card,
.account-card {
    padding: clamp(1.25rem, 4vw, 2rem);
    border-radius: 20px;
}

.surface-card,
.detail-panel,
.teacher-panel,
.admin-panel {
    border: 1px solid var(--card-border);
    border-radius: 20px;
    background: var(--card-bg);
    box-shadow: 0 18px 44px rgba(0, 0, 0, 0.22);
}

.section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1rem;
}

.section-head p { margin: 0; color: var(--muted); }

.form-stack label:not(.field-label),
.admin-form-grid label {
    display: flex;
    min-width: 0;
    flex-direction: column;
    gap: 0.35rem;
    color: var(--muted);
    font-size: 0.82rem;
    font-weight: 600;
}

.form-stack input:not([type="checkbox"]):not([type="radio"]):not([type="file"]),
.form-stack select,
.admin-form-grid input:not([type="checkbox"]):not([type="radio"]),
.admin-form-grid select,
.admin-filters input {
    width: 100%;
    min-width: 0;
    min-height: 2.55rem;
    padding: 0.55rem 0.7rem;
    box-sizing: border-box;
    border: 1px solid var(--neutral-stroke-rest);
    border-radius: 9px;
    color: var(--ink);
    background: var(--neutral-fill-input-rest);
    font: inherit;
    font-size: 0.92rem;
}

.form-stack input:focus,
.form-stack select:focus,
.admin-form-grid input:focus,
.admin-form-grid select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

.form-actions,
.inline-actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.65rem;
    margin-top: 0.5rem;
}

.data-list {
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid var(--card-border);
    border-radius: 18px;
    background: rgba(18, 22, 33, 0.78);
}

.data-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 1.15rem;
    border-top: 1px solid rgba(255, 255, 255, 0.055);
}

.data-row:first-child { border-top: 0; }
.data-row-main { display: flex; min-width: 0; flex-direction: column; gap: 0.2rem; }
.data-row-main strong,
.data-row-main a { color: var(--ink); font-weight: 700; text-decoration: none; }
.data-row-main small { color: var(--muted); }

.detail-hero,
.teacher-hero {
    position: relative;
    overflow: hidden;
    padding: clamp(1.5rem, 4vw, 2.8rem);
    border: 1px solid rgba(167, 139, 250, 0.15);
    border-radius: 26px;
    background:
        radial-gradient(circle at 88% 15%, rgba(139, 92, 246, 0.22), transparent 28%),
        linear-gradient(135deg, rgba(29, 23, 55, 0.95), rgba(16, 19, 29, 0.94));
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.24);
}

.detail-hero h1,
.teacher-hero h1 { margin: 0.25rem 0 0.5rem; }

.detail-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem 1.25rem;
    margin-top: 1rem;
    color: var(--muted);
    font-size: 0.88rem;
}

.detail-meta span { display: inline-flex; align-items: center; gap: 0.35rem; }
.detail-meta svg { fill: currentColor !important; }

.lesson-list {
    display: flex;
    flex-direction: column;
    gap: 0.7rem;
}

.lesson-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 1.1rem;
    border: 1px solid var(--card-border);
    border-radius: 15px;
    background: rgba(19, 23, 34, 0.82);
    transition: border-color 0.15s ease, transform 0.15s ease;
}

.lesson-item:hover { border-color: rgba(167, 139, 250, 0.28); transform: translateX(2px); }
.lesson-order { color: #a78bfa; font-size: 0.78rem; font-weight: 800; letter-spacing: 0.08em; }

.teacher-experience { gap: 1.5rem; }

.teacher-grid,
.metric-grid,
.admin-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
}

.teacher-course-card,
.metric-card {
    display: flex;
    min-height: 9rem;
    flex-direction: column;
    padding: 1.25rem;
    border: 1px solid var(--card-border);
    border-radius: 18px;
    background: linear-gradient(145deg, rgba(139, 92, 246, 0.08), transparent 45%), var(--card-bg);
}

.teacher-course-card p,
.metric-card p { color: var(--muted); }
.metric-card strong { color: #fff; font-size: 2rem; line-height: 1.1; }
.metric-card a { margin-top: auto; }

.editor-section {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.editor-section > h2 {
    padding-bottom: 0.65rem;
    border-bottom: 1px solid var(--card-border);
}

.watch-experience { max-width: 1220px; margin: 0 auto; }
.watch-experience .player-wrap { border-radius: 20px; }
.watch-content-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.6fr); gap: 1rem; }
.watch-content-grid > fluent-card { height: 100%; }

.admin-page-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.admin-page-head h1 { margin: 0.2rem 0 0.3rem; }
.admin-stack { display: flex; flex-direction: column; gap: 0.85rem; }
.admin-form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.8rem; }
.admin-form-grid .full { grid-column: 1 / -1; }

.audit-entry code {
    display: block;
    max-width: 100%;
    overflow-x: auto;
    padding: 0.7rem;
    border-radius: 9px;
    color: #c4b5fd;
    background: #0b0e16;
    font-size: 0.75rem;
}

.status-experience {
    display: grid;
    min-height: calc(100vh - 180px);
    place-items: center;
    text-align: center;
}

.status-card {
    width: min(34rem, 100%);
    padding: clamp(2rem, 6vw, 4rem);
    box-sizing: border-box;
    border: 1px solid rgba(167, 139, 250, 0.16);
    border-radius: 26px;
    background: radial-gradient(circle at 50% 0, rgba(139, 92, 246, 0.18), transparent 35%), var(--card-bg);
    box-shadow: 0 28px 70px rgba(0, 0, 0, 0.32);
}

.status-card-icon {
    display: grid;
    width: 4rem;
    height: 4rem;
    place-items: center;
    margin: 0 auto 1rem;
    border-radius: 18px;
    color: #c4b5fd;
    background: rgba(139, 92, 246, 0.14);
}

.status-card-icon svg { fill: currentColor !important; }
.status-card p { color: var(--muted); }

@media (max-width: 760px) {
    .watch-content-grid,
    .admin-form-grid { grid-template-columns: 1fr; }
    .admin-form-grid .full { grid-column: auto; }
    .data-row,
    .lesson-item { align-items: flex-start; flex-direction: column; }
    .admin-page-head,
    .section-head { align-items: flex-start; flex-direction: column; }
}

/* ---------- approved learning interface ---------- */

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

body:has(.login-experience) header.site-header,
body:has(.login-experience) fluent-header.site-header,
body:has(.admin-experience) header.site-header,
body:has(.admin-experience) fluent-header.site-header {
    display: none;
}

/* Sign in */

.login-experience {
    min-height: 100vh;
    display: grid;
    grid-template-columns: minmax(0, 1.08fr) minmax(440px, 0.92fr);
    background: #0c0f17;
}

.login-story {
    position: relative;
    isolation: isolate;
    display: flex;
    min-height: 100vh;
    flex-direction: column;
    justify-content: space-between;
    overflow: hidden;
    padding: clamp(2rem, 5vw, 5rem);
    box-sizing: border-box;
    background:
        linear-gradient(145deg, rgba(9, 11, 20, 0.20), rgba(8, 9, 16, 0.92)),
        radial-gradient(circle at 22% 26%, rgba(139, 92, 246, 0.75), transparent 25%),
        radial-gradient(circle at 84% 72%, rgba(79, 70, 229, 0.55), transparent 32%),
        linear-gradient(135deg, #1d1541 0%, #121728 48%, #090b12 100%);
}

.login-story::before,
.login-story::after {
    content: "";
    position: absolute;
    z-index: -1;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 999px;
}

.login-story::before {
    width: 36rem;
    height: 36rem;
    top: 8%;
    right: -20%;
    box-shadow: 0 0 0 5rem rgba(255, 255, 255, 0.012), 0 0 0 10rem rgba(255, 255, 255, 0.009);
}

.login-story::after {
    width: 22rem;
    height: 22rem;
    left: -10%;
    bottom: -12%;
}

.login-brand,
.login-panel-mobile-brand {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    width: fit-content;
    color: #fff !important;
    font-size: 1.45rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-decoration: none;
}

.login-brand-icon {
    display: inline-grid;
    width: 2.65rem;
    height: 2.65rem;
    place-items: center;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 13px;
    color: #fff;
    background: linear-gradient(145deg, #9b75ff, #6d3ee9);
    box-shadow: 0 12px 36px rgba(109, 62, 233, 0.38);
}

.login-brand-icon svg {
    fill: currentColor !important;
}

.login-story-content {
    max-width: 42rem;
    padding: 4rem 0;
}

.login-eyebrow {
    margin: 0 0 1.1rem;
    color: #c4b5fd;
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.22em;
}

.login-story h1 {
    max-width: none;
    font-size: clamp(2.8rem, 6vw, 5.4rem);
    font-weight: 800;
    line-height: 1.12;
    letter-spacing: -0.055em;
}

.login-story-content > p:last-child {
    max-width: 35rem;
    margin: 1.75rem 0 0;
    color: rgba(238, 239, 250, 0.74);
    font-size: clamp(1rem, 1.5vw, 1.2rem);
    line-height: 1.9;
}

.login-community {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    color: rgba(255, 255, 255, 0.68);
    font-size: 0.9rem;
}

.login-avatar-stack {
    display: flex;
    padding-left: 0.5rem;
}

.login-avatar-stack i {
    display: grid;
    width: 2rem;
    height: 2rem;
    place-items: center;
    margin-left: -0.5rem;
    border: 2px solid #171527;
    border-radius: 50%;
    color: #fff;
    background: #4f46e5;
    font-size: 0.72rem;
    font-style: normal;
    font-weight: 700;
}

.login-avatar-stack i:nth-child(2) { background: #7c3aed; }
.login-avatar-stack i:nth-child(3) { background: #a855f7; }

.login-panel {
    display: grid;
    min-height: 100vh;
    place-items: center;
    padding: clamp(2rem, 6vw, 5rem);
    box-sizing: border-box;
    background:
        radial-gradient(circle at 90% 5%, rgba(139, 92, 246, 0.10), transparent 28%),
        #0c0f17;
    min-width: 0;
}

.login-panel-mobile-brand { display: none; }

fluent-card.login-card {
    width: 100%;
    max-width: 29rem;
    min-width: 0;
    height: auto !important;
    min-height: 0 !important;
    align-self: center;
    padding: clamp(1.5rem, 4vw, 2.5rem);
    border: 1px solid rgba(255, 255, 255, 0.09);
    border-radius: 24px;
    background: rgba(20, 24, 36, 0.84);
    box-shadow: 0 28px 80px rgba(0, 0, 0, 0.42), 0 0 70px rgba(139, 92, 246, 0.06);
    backdrop-filter: blur(20px);
}

.login-card-heading { margin-bottom: 1.5rem; }

.login-card-heading h2 {
    margin: 0.25rem 0 0.45rem;
    font-size: clamp(1.7rem, 3vw, 2.2rem);
    font-weight: 750;
    letter-spacing: -0.025em;
}

.login-form fluent-stack { gap: 1rem; }

.login-form fluent-text-field {
    --neutral-fill-input-rest: #171b27;
    --neutral-fill-input-hover: #1b2030;
    --neutral-fill-input-focus: #171b27;
    --neutral-stroke-rest: rgba(255, 255, 255, 0.14);
    --neutral-stroke-hover: rgba(167, 139, 250, 0.42);
}

.login-form fluent-text-field::part(root) { min-height: 3.25rem; }

.login-form-links {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    font-size: 0.86rem;
}

.login-security-note {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    color: var(--faint);
}

.login-security-note svg { fill: currentColor !important; }

.login-submit {
    width: 100%;
    min-height: 3rem;
    font-weight: 700;
}

.login-text-link {
    color: #c4b5fd;
    font-weight: 600;
    text-decoration: none;
}

.login-text-link:hover { color: #ede9fe; text-decoration: underline; }

.login-divider {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin: 1.35rem 0 1rem;
    color: var(--faint);
    font-size: 0.78rem;
}

.login-divider::before,
.login-divider::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--card-border);
}

.external-login-list { gap: 0.65rem !important; }

.login-register {
    margin: 1.5rem 0 0;
    color: var(--muted);
    text-align: center;
    font-size: 0.9rem;
}

/* Course catalog */

.catalog-experience { gap: 2rem; }

.catalog-hero {
    position: relative;
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 2rem;
    overflow: hidden;
    padding: clamp(1.75rem, 4vw, 3.25rem);
    border: 1px solid rgba(167, 139, 250, 0.15);
    border-radius: 28px;
    background:
        radial-gradient(circle at 84% 24%, rgba(139, 92, 246, 0.24), transparent 28%),
        linear-gradient(135deg, rgba(27, 22, 54, 0.95), rgba(16, 19, 29, 0.92));
    box-shadow: 0 28px 70px rgba(0, 0, 0, 0.24);
}

.catalog-hero::after {
    content: "";
    position: absolute;
    width: 18rem;
    height: 18rem;
    top: -9rem;
    right: -3rem;
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 50%;
    box-shadow: 0 0 0 3.5rem rgba(255, 255, 255, 0.012);
}

.catalog-hero h1 {
    margin-top: 0.35rem;
    font-size: clamp(2rem, 4vw, 3.25rem);
}

.catalog-summary {
    position: relative;
    z-index: 1;
    display: flex;
    min-width: 7rem;
    flex-direction: column;
    align-items: center;
    padding: 1rem 1.25rem;
    border: 1px solid rgba(255, 255, 255, 0.10);
    border-radius: 18px;
    color: var(--muted);
    background: rgba(255, 255, 255, 0.045);
    backdrop-filter: blur(10px);
}

.catalog-summary-number {
    color: #fff;
    font-size: 2rem;
    font-weight: 800;
    line-height: 1.1;
}

.catalog-grid {
    grid-template-columns: repeat(auto-fill, minmax(295px, 1fr));
    gap: 1.25rem;
}

.catalog-card {
    display: flex;
    min-width: 0;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid var(--card-border);
    border-radius: 22px;
    background: var(--card-bg);
    box-shadow: 0 18px 44px rgba(0, 0, 0, 0.25);
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.catalog-card:hover {
    transform: translateY(-4px);
    border-color: var(--card-border-hover);
    box-shadow: 0 26px 60px rgba(0, 0, 0, 0.38), 0 0 0 1px rgba(139, 92, 246, 0.08);
}

.catalog-card-cover {
    position: relative;
    display: grid;
    min-height: 10rem;
    place-items: center;
    overflow: hidden;
    background:
        radial-gradient(circle at 28% 20%, rgba(255, 255, 255, 0.15), transparent 22%),
        linear-gradient(135deg, #5b36c9, #252b59 64%, #121724);
}

.catalog-card:nth-child(3n + 2) .catalog-card-cover { background: radial-gradient(circle at 72% 24%, rgba(255, 255, 255, 0.13), transparent 22%), linear-gradient(135deg, #6b2f78, #382c65 62%, #151725); }
.catalog-card:nth-child(3n + 3) .catalog-card-cover { background: radial-gradient(circle at 24% 80%, rgba(255, 255, 255, 0.12), transparent 22%), linear-gradient(135deg, #1f5a68, #29355c 62%, #141722); }

.catalog-card-monogram {
    color: rgba(255, 255, 255, 0.92);
    font-size: 4.5rem;
    font-weight: 800;
    text-shadow: 0 14px 40px rgba(0, 0, 0, 0.3);
}

.catalog-card-lessons {
    position: absolute;
    right: 0.85rem;
    bottom: 0.75rem;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.3rem 0.55rem;
    border-radius: 999px;
    color: rgba(255, 255, 255, 0.85);
    background: rgba(8, 10, 18, 0.58);
    font-size: 0.75rem;
    backdrop-filter: blur(6px);
}

.catalog-card-lessons svg { fill: currentColor !important; }

.catalog-card-body {
    display: flex;
    min-height: 16rem;
    flex: 1;
    flex-direction: column;
    padding: 1.25rem;
}

.catalog-card-status { min-height: 1.8rem; }

.catalog-card h2 {
    margin-top: 0.65rem;
    font-size: 1.2rem;
    line-height: 1.45;
}

.catalog-card-description {
    display: -webkit-box;
    flex: 1;
    overflow: hidden;
    margin: 0.45rem 0 1rem;
    color: var(--muted);
    font-size: 0.9rem;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
    line-clamp: 3;
}

.catalog-card-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    margin-top: 0.15rem;
    padding-top: 1rem;
    border-top: 1px solid var(--card-border);
}

.catalog-card-foot > span {
    max-width: 10rem;
    color: var(--faint);
    font-size: 0.72rem;
    line-height: 1.4;
}

.catalog-card-action { white-space: nowrap; }

.status-pill,
.role-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    width: fit-content;
    padding: 0.25rem 0.6rem;
    border: 1px solid transparent;
    border-radius: 999px;
    font-size: 0.76rem;
    font-weight: 650;
    line-height: 1.35;
}

.status-pill svg { fill: currentColor !important; }
.status-pill-success { border-color: rgba(52, 211, 153, 0.22); color: #6ee7b7; background: rgba(52, 211, 153, 0.10); }
.status-pill-warning { border-color: rgba(251, 191, 36, 0.22); color: #fcd34d; background: rgba(251, 191, 36, 0.10); }
.status-pill-danger { border-color: rgba(248, 113, 113, 0.22); color: #fca5a5; background: rgba(248, 113, 113, 0.10); }
.status-pill-neutral,
.role-pill { border-color: rgba(167, 139, 250, 0.18); color: #c4b5fd; background: rgba(139, 92, 246, 0.10); }

.catalog-empty { min-height: 16rem; display: grid; align-content: center; }

/* Administrator user directory */

.admin-experience {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 248px minmax(0, 1fr);
    background: #0d1018;
}

.admin-sidebar {
    position: sticky;
    top: 0;
    display: flex;
    min-height: 100vh;
    height: 100vh;
    flex-direction: column;
    padding: 1.5rem 1rem;
    box-sizing: border-box;
    border-right: 1px solid rgba(255, 255, 255, 0.07);
    background: #10131d;
}

.admin-brand {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    margin: 0 0.55rem 2rem;
    color: #fff !important;
    font-size: 1rem;
    font-weight: 800;
    text-decoration: none;
}

.admin-brand > span {
    display: grid;
    width: 2.25rem;
    height: 2.25rem;
    place-items: center;
    border-radius: 11px;
    color: #fff;
    background: linear-gradient(145deg, #9b75ff, #6d3ee9);
    box-shadow: 0 10px 24px rgba(109, 62, 233, 0.25);
}

.admin-brand svg { fill: currentColor !important; }

.admin-nav-label {
    margin: 0 0.75rem 0.6rem;
    color: #626779;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.16em;
}

.admin-nav {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.admin-site-switcher {
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.admin-site-switcher .admin-nav-label {
    margin-top: 0;
}

.admin-nav a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.7rem 0.8rem;
    border-radius: 11px;
    color: #979baa !important;
    text-decoration: none;
    font-size: 0.88rem;
    font-weight: 550;
    transition: color 0.15s ease, background 0.15s ease;
}

.admin-nav a:hover { color: #fff !important; background: rgba(255, 255, 255, 0.05); }

.admin-nav a.active {
    color: #ddd6fe !important;
    background: linear-gradient(90deg, rgba(139, 92, 246, 0.20), rgba(139, 92, 246, 0.07));
    box-shadow: inset 3px 0 #8b5cf6;
}

.admin-nav svg { fill: currentColor !important; }

.admin-main { min-width: 0; }

.admin-topbar {
    display: flex;
    min-height: 64px;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
    color: var(--muted);
    background: rgba(13, 16, 24, 0.85);
    backdrop-filter: blur(14px);
}

.admin-section-name { font-size: 0.82rem; font-weight: 650; }

.admin-profile {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    font-size: 0.82rem;
}

.admin-profile i,
.admin-user-cell > i {
    display: grid;
    flex: 0 0 auto;
    width: 2rem;
    height: 2rem;
    place-items: center;
    border-radius: 50%;
    color: #ddd6fe;
    background: #312e55;
    font-size: 0.75rem;
    font-style: normal;
    font-weight: 750;
}

.admin-content {
    width: min(1180px, 100%);
    margin: 0 auto;
    padding: clamp(1.5rem, 4vw, 3.25rem);
    box-sizing: border-box;
}

.admin-title-row {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: 1.75rem;
}

.admin-title-row h1 { margin: 0.25rem 0 0.35rem; }

.admin-filters {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.admin-search { width: min(25rem, 100%) !important; }

.admin-select-label select {
    min-width: 9rem;
    min-height: 2.35rem;
    padding: 0.45rem 2rem 0.45rem 0.75rem;
    border: 1px solid var(--neutral-stroke-rest);
    border-radius: 8px;
    color: var(--ink);
    background: var(--neutral-fill-input-rest);
    font: inherit;
    font-size: 0.88rem;
}

.admin-result-count {
    margin-left: auto;
    color: var(--faint);
    font-size: 0.8rem;
    white-space: nowrap;
}

.admin-table-shell {
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 18px;
    background: rgba(18, 22, 33, 0.82);
    box-shadow: 0 22px 52px rgba(0, 0, 0, 0.22);
}

.admin-user-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.88rem;
}

.admin-user-table th {
    padding: 0.85rem 1.1rem;
    color: #727789;
    background: rgba(255, 255, 255, 0.018);
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-align: left;
    text-transform: uppercase;
}

.admin-user-table td {
    padding: 0.9rem 1.1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.055);
    color: #c8cad3;
    vertical-align: middle;
}

.admin-user-table tbody tr { transition: background 0.15s ease; }
.admin-user-table tbody tr:hover { background: rgba(139, 92, 246, 0.045); }

.admin-user-cell {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    min-width: 12rem;
}

.admin-user-cell > i {
    width: 2.25rem;
    height: 2.25rem;
    color: #c4b5fd;
    background: linear-gradient(145deg, #373160, #252842);
}

.admin-user-cell > span { display: flex; min-width: 0; flex-direction: column; }
.admin-user-cell a { overflow: hidden; color: #f3f4f8; font-weight: 650; text-decoration: none; text-overflow: ellipsis; white-space: nowrap; }
.admin-user-cell a:hover { color: #c4b5fd; }
.admin-user-cell small { overflow: hidden; color: #777c8e; font-size: 0.75rem; text-overflow: ellipsis; white-space: nowrap; }

.admin-row-action {
    display: inline-grid;
    width: 2rem;
    height: 2rem;
    place-items: center;
    border-radius: 8px;
    color: #818698;
}

.admin-row-action:hover { color: #c4b5fd; background: rgba(139, 92, 246, 0.10); }
.admin-row-action svg { fill: currentColor !important; }
.admin-empty { border: 0; background: transparent; }

.admin-pagination {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 1rem;
    color: var(--faint);
    font-size: 0.8rem;
}

.admin-pagination > div { display: flex; gap: 0.4rem; }

.admin-pagination a,
.admin-pagination .disabled {
    display: inline-flex;
    padding: 0.4rem 0.75rem;
    border: 1px solid var(--card-border);
    border-radius: 8px;
    text-decoration: none;
}

.admin-pagination .disabled { color: #4f5362; cursor: not-allowed; }

@media (max-width: 960px) {
    .login-experience { grid-template-columns: minmax(0, 0.8fr) minmax(400px, 1.2fr); }
    .login-story { padding: 2rem; }
    .login-story h1 { font-size: clamp(2.5rem, 6vw, 4rem); }

    .admin-experience { grid-template-columns: 1fr; }
    .admin-sidebar {
        position: static;
        min-height: auto;
        height: auto;
        padding: 0.8rem 1rem;
        border-right: 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.07);
    }
    .admin-brand { margin: 0 0 0.8rem; }
    .admin-nav-label { display: none; }
    .admin-nav { flex-direction: row; overflow-x: auto; }
    .admin-nav a { flex: 0 0 auto; }
    .admin-site-switcher {
        margin-top: 0.65rem;
        padding-top: 0.65rem;
        overflow: hidden;
    }
}

@media (max-width: 760px) {
    .login-experience { display: block; }
    .login-story { min-height: 21rem; padding: 1.5rem; }
    .login-story-content { padding: 2.5rem 0 1.25rem; }
    .login-story h1 { font-size: clamp(2.2rem, 11vw, 3.25rem); }
    .login-story-content > p:last-child { margin-top: 1rem; font-size: 0.95rem; }
    .login-community { display: none; }
    .login-panel { min-height: auto; padding: 1rem 1rem 3rem; }

    .catalog-hero { align-items: flex-start; flex-direction: column; }
    .catalog-summary { min-width: 5.5rem; align-items: flex-start; }

    .admin-topbar { padding: 0 1rem; }
    .admin-filters { align-items: stretch; flex-wrap: wrap; }
    .admin-search { width: 100% !important; flex-basis: 100%; }
    .admin-result-count { width: 100%; margin-left: 0; }
}

@media (max-width: 640px) {
    .catalog-grid { grid-template-columns: 1fr; }

    .admin-content { padding: 1.25rem 1rem 2.5rem; }
    .admin-profile { font-size: 0; }
    .admin-profile i { font-size: 0.75rem; }
    .admin-table-shell { overflow: visible; border: 0; background: transparent; box-shadow: none; }
    .admin-user-table,
    .admin-user-table tbody,
    .admin-user-table tr,
    .admin-user-table td { display: block; width: 100%; box-sizing: border-box; }
    .admin-user-table thead { display: none; }
    .admin-user-table tr {
        margin-bottom: 0.75rem;
        overflow: hidden;
        border: 1px solid var(--card-border);
        border-radius: 16px;
        background: rgba(18, 22, 33, 0.82);
    }
    .admin-user-table td {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 1rem;
        padding: 0.65rem 0.9rem;
        border-top: 1px solid rgba(255, 255, 255, 0.045);
        text-align: right;
    }
    .admin-user-table td:first-child { border-top: 0; padding-top: 0.9rem; padding-bottom: 0.9rem; }
    .admin-user-table td::before {
        content: attr(data-label);
        color: #686d7e;
        font-size: 0.68rem;
        font-weight: 700;
        letter-spacing: 0.06em;
        text-transform: uppercase;
    }
    .admin-user-table td:first-child::before { display: none; }
    .admin-user-cell { width: 100%; text-align: left; }
    .admin-user-table td:last-child { padding: 0; }
    .admin-user-table td:last-child::before { display: none; }
    .admin-row-action { width: 100%; border-radius: 0; padding: 0.45rem; }
}

@media (max-width: 640px) {
    .page-body {
        padding: 1.25rem 1rem calc(5rem + env(safe-area-inset-bottom, 0px));
    }

    header.site-header,
    fluent-header.site-header {
        height: auto !important;
        min-height: 56px;
        padding: 0.55rem 1rem !important;
    }

    header.header.site-header > .header-gutters {
        flex-direction: column;
        align-items: stretch;
        width: 100%;
        margin: 0;
        row-gap: 0.35rem;
    }

    .brand {
        width: 100%;
        white-space: normal;
        line-height: 1.3;
    }

    .site-header-spacer {
        display: none !important;
    }

    .nav {
        width: 100%;
        flex-wrap: wrap;
        justify-content: flex-start;
    }

    .nav-secondary {
        display: none !important;
    }

    .nav fluent-anchor,
    .nav-user {
        font-size: 0.82rem;
    }

    .lesson-row {
        flex-direction: column;
        align-items: flex-start;
    }

    fluent-card {
        padding: 1rem;
    }

    fluent-stack {
        flex-wrap: wrap !important;
        max-width: 100%;
    }
}