/* Club Sabernet Academy — dark theme, matched to the live gr_css_variables palette
   (chat-page-*, form-*, side-navigation-* families read 2026-07-22). Owned by Agent CLASSROOM. */

:root {
    --academy-bg: #0B0C0F;
    --academy-bg-alt: #0F1115;
    --academy-surface: #16191E;
    --academy-surface-alt: #1F232A;
    --academy-surface-raised: #121418;
    --academy-border: #1E293B;
    --academy-border-strong: #334155;
    --academy-accent: #E91E63;
    --academy-accent-hover: #C2185B;
    --academy-accent-soft: #F06292;
    --academy-accent-wash: rgba(233, 30, 99, 0.14);
    --academy-text: #F8FAFC;
    --academy-text-muted: #94A3B8;
    --academy-text-faint: #64748B;
    --academy-success: #22C55E;
    --academy-success-wash: rgba(34, 197, 94, 0.14);
    --academy-radius-lg: 14px;
    --academy-radius-md: 10px;
    --academy-radius-sm: 6px;
    --academy-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
    --academy-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

.academy_body, .academy_body * {
    box-sizing: border-box;
}

.academy_body {
    margin: 0;
    background: var(--academy-bg);
    color: var(--academy-text);
    font-family: var(--academy-font);
    font-size: 14px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

.academy_body a {
    color: inherit;
    text-decoration: none;
}

.academy_body ul, .academy_body ol {
    margin: 0;
    padding: 0;
}

.academy_body button, .academy_body input, .academy_body textarea {
    font-family: inherit;
    font-size: inherit;
}

.academy_shell {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ---------- Top bar ---------- */

.academy_topbar {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 12px 24px;
    background: var(--academy-bg-alt);
    border-bottom: 1px solid var(--academy-border);
}

.academy_logo {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.academy_logo img {
    height: 32px;
    width: auto;
    display: block;
}

.academy_logo_fallback {
    font-weight: 700;
    font-size: 17px;
    letter-spacing: 0.02em;
    color: var(--academy-text);
}

.academy_tabs {
    display: flex;
    align-items: center;
    gap: 4px;
    flex: 1;
    overflow-x: auto;
}

.academy_tab {
    padding: 8px 14px;
    border-radius: var(--academy-radius-sm);
    color: var(--academy-text-muted);
    font-weight: 600;
    font-size: 14px;
    white-space: nowrap;
    transition: background 0.15s ease, color 0.15s ease;
}

.academy_tab:hover {
    color: var(--academy-text);
    background: var(--academy-surface-alt);
}

.academy_tab.is_active {
    color: var(--academy-text);
    background: var(--academy-accent-wash);
}

.academy_topbar_right {
    flex-shrink: 0;
    display: flex;
    align-items: center;
}

/* ---------- Layout ---------- */

.academy_main {
    flex: 1;
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 28px 24px 64px;
}

.academy_page_head {
    margin-bottom: 24px;
}

.academy_page_head h1 {
    margin: 0 0 6px;
    font-size: 26px;
    font-weight: 700;
    color: var(--academy-text);
}

.academy_page_head p {
    margin: 0;
    color: var(--academy-text-muted);
    font-size: 15px;
}

.academy_breadcrumb {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 16px;
    font-size: 13px;
    color: var(--academy-text-faint);
}

.academy_breadcrumb a:hover {
    color: var(--academy-accent-soft);
}

.academy_empty_state {
    padding: 48px 24px;
    text-align: center;
    color: var(--academy-text-muted);
    background: var(--academy-surface);
    border: 1px solid var(--academy-border);
    border-radius: var(--academy-radius-lg);
}

/* ---------- Buttons ---------- */

.academy_btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 18px;
    border: 1px solid transparent;
    border-radius: var(--academy-radius-md);
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: background 0.15s ease, border-color 0.15s ease, opacity 0.15s ease;
    background: var(--academy-surface-alt);
    color: var(--academy-text);
}

.academy_btn:hover {
    background: var(--academy-border);
}

.academy_btn--primary {
    background: var(--academy-accent);
    color: #FFFFFF;
}

.academy_btn--primary:hover {
    background: var(--academy-accent-hover);
}

.academy_btn--ghost {
    background: transparent;
    border-color: var(--academy-border-strong);
    color: var(--academy-text-muted);
}

.academy_btn--ghost:hover {
    color: var(--academy-text);
    border-color: var(--academy-text-muted);
}

.academy_btn--sm {
    padding: 7px 12px;
    font-size: 13px;
}

.academy_btn--full {
    width: 100%;
}

.academy_btn:disabled, .academy_btn.is_disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

.academy_btn.is_complete {
    background: var(--academy-success-wash);
    color: var(--academy-success);
}

/* ---------- Course grid / cards ---------- */

.academy_grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
}

.academy_card {
    display: flex;
    flex-direction: column;
    background: var(--academy-surface);
    border: 1px solid var(--academy-border);
    border-radius: var(--academy-radius-lg);
    overflow: hidden;
    transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}

.academy_card:hover {
    transform: translateY(-3px);
    border-color: var(--academy-border-strong);
    box-shadow: var(--academy-shadow);
}

.academy_card_cover {
    position: relative;
    aspect-ratio: 16 / 9;
    background: linear-gradient(135deg, var(--academy-surface-alt), var(--academy-bg-alt));
    overflow: hidden;
}

.academy_card_cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.academy_card_cover.is_placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
}

.academy_card_cover.is_placeholder span {
    font-size: 44px;
    font-weight: 700;
    color: rgba(248, 250, 252, 0.14);
}

.academy_card_body {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 16px 18px 18px;
    flex: 1;
}

.academy_card_title {
    margin: 0;
    font-size: 16px;
    font-weight: 700;
    color: var(--academy-text);
}

.academy_card_summary {
    margin: 0;
    color: var(--academy-text-muted);
    font-size: 13.5px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.academy_card_meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-top: auto;
}

.academy_pill {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 700;
}

.academy_pill--free {
    background: var(--academy-success-wash);
    color: var(--academy-success);
}

.academy_pill--price {
    background: var(--academy-accent-wash);
    color: var(--academy-accent-soft);
}

.academy_pill--lock {
    background: rgba(148, 163, 184, 0.14);
    color: var(--academy-text-faint);
}

/* ---------- Progress bars ---------- */

.academy_progress {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.academy_progress_track {
    height: 6px;
    border-radius: 999px;
    background: var(--academy-surface-alt);
    overflow: hidden;
}

.academy_progress_fill {
    height: 100%;
    border-radius: 999px;
    background: var(--academy-accent);
    transition: width 0.3s ease;
}

.academy_progress_label {
    font-size: 12px;
    color: var(--academy-text-faint);
}

/* ---------- Course overview ---------- */

.academy_overview_header {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 24px;
    margin-bottom: 32px;
}

.academy_overview_cover {
    aspect-ratio: 16 / 9;
    border-radius: var(--academy-radius-lg);
    overflow: hidden;
    background: linear-gradient(135deg, var(--academy-surface-alt), var(--academy-bg-alt));
    display: flex;
    align-items: center;
    justify-content: center;
}

.academy_overview_cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.academy_overview_cover span {
    font-size: 64px;
    font-weight: 700;
    color: rgba(248, 250, 252, 0.14);
}

.academy_overview_desc {
    color: var(--academy-text-muted);
    font-size: 14.5px;
}

.academy_overview_desc :is(h1, h2, h3, h4) {
    color: var(--academy-text);
}

.academy_cta_panel {
    background: var(--academy-surface);
    border: 1px solid var(--academy-border);
    border-radius: var(--academy-radius-lg);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    align-self: flex-start;
}

.academy_cta_price {
    font-size: 22px;
    font-weight: 700;
    color: var(--academy-text);
}

.academy_cta_note {
    font-size: 13px;
    color: var(--academy-text-faint);
}

.academy_requirement_note {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    border-radius: var(--academy-radius-md);
    background: rgba(148, 163, 184, 0.1);
    color: var(--academy-text-muted);
    font-size: 13px;
}

/* ---------- Modules / lessons list ---------- */

.academy_modules {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.academy_module {
    border: 1px solid var(--academy-border);
    border-radius: var(--academy-radius-md);
    overflow: hidden;
    margin-bottom: 10px;
}

.academy_module_head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 12px 16px;
    background: var(--academy-surface);
}

.academy_module_head h3 {
    margin: 0;
    font-size: 14.5px;
    font-weight: 700;
}

/* Special resource modules (Audiobook, Book & Workbook) — LSTA gold so they stand out. */
.academy_module_head h3.academy_module_gold {
    color: #C9A84C;
}

.academy_module_unlock_label {
    font-size: 12px;
    color: var(--academy-text-faint);
    display: flex;
    align-items: center;
    gap: 6px;
}

.academy_lesson_list {
    display: flex;
    flex-direction: column;
}

.academy_lesson_row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    border-top: 1px solid var(--academy-border);
    font-size: 13.5px;
    color: var(--academy-text-muted);
}

a.academy_lesson_row {
    color: var(--academy-text-muted);
    transition: background 0.12s ease;
}

a.academy_lesson_row:hover {
    background: var(--academy-surface-alt);
    color: var(--academy-text);
}

.academy_lesson_row.is_locked {
    opacity: 0.55;
    cursor: not-allowed;
}

.academy_lesson_icon {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    border: 1.5px solid var(--academy-border-strong);
    font-size: 10px;
}

.academy_lesson_row.is_complete .academy_lesson_icon {
    background: var(--academy-success);
    border-color: var(--academy-success);
    color: #06210F;
}

.academy_lesson_title {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.academy_lesson_meta {
    flex-shrink: 0;
    font-size: 12px;
    color: var(--academy-text-faint);
    display: flex;
    align-items: center;
    gap: 8px;
}

.academy_badge_preview {
    font-size: 10.5px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--academy-accent-soft);
    border: 1px solid var(--academy-accent-soft);
    border-radius: 999px;
    padding: 1px 6px;
}

/* ---------- Player ---------- */

.academy_player_layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 24px;
    align-items: start;
}

.academy_video_wrap {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    background: #000000;
    border-radius: var(--academy-radius-lg);
    overflow: hidden;
}

.academy_video_wrap video,
.academy_video_wrap iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

.academy_lesson_prompt {
    aspect-ratio: 16 / 9;
    border-radius: var(--academy-radius-lg);
    background: var(--academy-surface);
    border: 1px solid var(--academy-border);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 14px;
    padding: 24px;
    text-align: center;
    color: var(--academy-text-muted);
}

.academy_lesson_head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin: 20px 0 8px;
    flex-wrap: wrap;
}

.academy_lesson_head h1 {
    margin: 0;
    font-size: 20px;
    font-weight: 700;
}

.academy_lesson_content {
    margin-top: 18px;
    color: var(--academy-text-muted);
    font-size: 14.5px;
    line-height: 1.7;
}

.academy_lesson_content :is(h1, h2, h3, h4) {
    color: var(--academy-text);
    margin: 1.4em 0 0.5em;
}

.academy_lesson_content p {
    margin: 0 0 1em;
}

.academy_lesson_content img {
    max-width: 100%;
    border-radius: var(--academy-radius-md);
}

.academy_lesson_content ul, .academy_lesson_content ol {
    margin: 0 0 1em 1.3em;
}

.academy_lesson_content ul { list-style: disc; }
.academy_lesson_content ol { list-style: decimal; }

.academy_attachments {
    margin-top: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.academy_attachment {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    background: var(--academy-surface);
    border: 1px solid var(--academy-border);
    border-radius: var(--academy-radius-md);
    font-size: 13.5px;
    color: var(--academy-text-muted);
}

.academy_attachment:hover {
    color: var(--academy-text);
    border-color: var(--academy-border-strong);
}

.academy_lesson_nav {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    margin-top: 28px;
    padding-top: 20px;
    border-top: 1px solid var(--academy-border);
}

.academy_sidebar {
    position: sticky;
    top: 76px;
    background: var(--academy-surface);
    border: 1px solid var(--academy-border);
    border-radius: var(--academy-radius-lg);
    overflow: hidden;
    max-height: calc(100vh - 96px);
    display: flex;
    flex-direction: column;
}

.academy_sidebar_head {
    padding: 14px 16px;
    border-bottom: 1px solid var(--academy-border);
}

.academy_sidebar_head strong {
    display: block;
    font-size: 13.5px;
    margin-bottom: 8px;
}

.academy_sidebar_body {
    overflow-y: auto;
}

.academy_sidebar .academy_module_head {
    padding: 10px 16px;
}

.academy_sidebar .academy_lesson_row {
    padding: 8px 16px;
    font-size: 13px;
}

.academy_sidebar .academy_lesson_row.is_current {
    background: var(--academy-accent-wash);
    color: var(--academy-text);
}

/* ---------- Toast ---------- */

.academy_toast {
    position: fixed;
    right: 20px;
    bottom: 20px;
    z-index: 100;
    max-width: 320px;
    padding: 12px 16px;
    border-radius: var(--academy-radius-md);
    background: var(--academy-surface-alt);
    border: 1px solid var(--academy-border-strong);
    color: var(--academy-text);
    font-size: 13.5px;
    box-shadow: var(--academy-shadow);
    transform: translateY(12px);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.academy_toast.is_visible {
    transform: translateY(0);
    opacity: 1;
}

.academy_toast.academy_toast--error {
    border-color: var(--academy-accent);
    background: var(--academy-accent-wash);
}

.d-none {
    display: none !important;
}

/* ---------- Responsive ---------- */

@media (max-width: 900px) {
    .academy_overview_header {
        grid-template-columns: 1fr;
    }

    .academy_player_layout {
        grid-template-columns: 1fr;
    }

    .academy_sidebar {
        position: static;
        max-height: none;
    }
}

@media (max-width: 600px) {
    .academy_topbar {
        flex-wrap: wrap;
        gap: 10px;
        padding: 10px 16px;
    }

    .academy_main {
        padding: 20px 14px 48px;
    }

    .academy_grid {
        grid-template-columns: 1fr;
    }
}