:root {
  --site-footer-h: 34px;
  --radius: 10px;
  --radius-sm: 8px;
  --sidebar-w: 300px;
  --topbar-h: 58px;
  --lesson-ratio: 0.48;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ── Тема: Лесная (тёмная, зелёный акцент) ── */
:root,
[data-theme="forest-dark"] {
  --bg-app: #0a0a0f;
  --bg-sidebar: #111118;
  --bg-topbar: #0d0d14;
  --bg-content: #0c0c12;
  --bg-lesson: #13131c;
  --bg-panel: #161621;
  --bg-elevated: #1a1a28;
  --bg-card: rgba(20, 27, 36, 0.92);
  --bg-input: #0e0e16;
  --bg-tabs: #0e0e16;
  --bg-simulator: #0e0e15;
  --bg-code: #0c0c12;
  --border: #2a2a3e;
  --border-soft: rgba(255, 255, 255, 0.06);
  --text: #e4e4ed;
  --text-heading: #f0f0f8;
  --text-muted: #8888a0;
  --text-body: #c8c8d8;
  --text-code: #d7d7ef;
  --accent: #7c5cfc;
  --accent-hover: #6a4ae8;
  --accent-soft: rgba(124, 92, 252, 0.14);
  --accent-glow: rgba(124, 92, 252, 0.25);
  --accent-on: #1a0f3a;
  --accent-text: #c8b8ff;
  --link: #7c5cfc;
  --danger: #e55353;
  --danger-soft: rgba(229, 83, 83, 0.12);
  --shadow-soft: 0 12px 40px rgba(0, 0, 0, 0.4);
  --scrollbar-thumb: #3d3d55;
  --gate-glow-1: rgba(124, 92, 252, 0.14);
  --gate-glow-2: rgba(124, 92, 252, 0.1);
  --gate-bg-from: #0a0a0f;
  --gate-bg-to: #101820;
  --surface-hover: rgba(124, 92, 252, 0.05);
  --surface-weak: rgba(124, 92, 252, 0.03);
  --lesson-gradient-mid: #161621;
  --lesson-gradient-end: #0e0e15;
  --lesson-glow: rgba(124, 92, 252, 0.07);
  --code-gutter: #0a0a0f;
  --code-gutter-border: #1a1a28;
  --code-selection: rgba(124, 92, 252, 0.18);
  --code-cursor: #c8b8ff;
  --hljs-bg: #0d0d15;
  --hljs-text: #e4e4ed;
  --inline-code-bg: rgba(124, 92, 252, 0.08);
  --inline-code-fg: #b088ff;
  --progress-track: #222238;
  --footer-bg: rgba(12, 17, 23, 0.92);
  --topbar-bg: rgba(16, 23, 31, 0.92);
  --resizer-bg: #0a0a0f;
  --resizer-handle: #3d3d55;
  --sql-table-bg: #0e0e16;
  --sql-table-border: #222238;
  --sql-table-head: #161626;
  --cm-theme: material-darker;
  --text-nav: #b0b0c8;
  --text-nav-done: #c8b8ff;
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.2);
  --overlay-bg: rgba(4, 4, 10, 0.72);
  --modal-bg: linear-gradient(165deg, #1a2433, #121a24);
  --modal-border: rgba(124, 92, 252, 0.35);
  --community-bg: linear-gradient(165deg, rgba(102, 196, 44, 0.12), rgba(18, 26, 36, 0.4));
  --community-border: rgba(124, 92, 252, 0.35);
  --community-hover: #c8b8ff;
  --progress-fill-start: #7c5cfc;
  --gate-continue-top: #8b6cff;
  --callout-bg: rgba(124, 92, 252, 0.1);
  --callout-border: rgba(124, 92, 252, 0.28);
  --console-ok: #a8b8c8;
  --console-run: #8888a0;
  --console-err: #d98888;
  --console-success: #b088ff;
  --test-star: #e6b84d;
  --test-star-active: #5a3d00;
  --border-strong: #4a4a66;
  --step-bg: rgba(255, 255, 255, 0.03);
  --step-hover-border: #6a7d94;
  --step-active-bg: rgba(124, 92, 252, 0.18);
  --step-active-border: #7c5cfc;
  --step-active-color: #c8b8ff;
  --step-done-border: rgba(124, 92, 252, 0.55);
  --step-done-color: #b088ff;
  --step-test-border: rgba(240, 192, 64, 0.55);
  --step-test-color: #e8c96a;
  --ai-fab-bg: #1a1a30;
  --ai-fab-border: rgba(124, 92, 252, 0.45);
  --ai-fab-text: #e8f1ff;
  --ai-fab-hint: #9ec5ff;
  --ai-drawer-bg: rgba(16, 23, 31, 0.97);
  --ai-fab-hover: #20334d;
  --ai-fab-active: #254062;
  --ai-bot-bg: #161621;
  --ai-bot-strong: #e4e4ed;
  --ai-bot-code-bg: rgba(0, 0, 0, 0.28);
  --ai-user-bg: rgba(91, 160, 255, 0.14);
  --ai-user-border: rgba(91, 160, 255, 0.28);
  --ai-user-text: #dce9ff;
}

/* ── Тема: Океан (тёмная, синий акцент) ── */
[data-theme="ocean-dark"] {
  --bg-app: #0a0e1a;
  --bg-sidebar: #101528;
  --bg-topbar: #0d1220;
  --bg-content: #0b101c;
  --bg-lesson: #121829;
  --bg-panel: #161e30;
  --bg-elevated: #1a2438;
  --bg-card: rgba(16, 22, 36, 0.94);
  --bg-input: #0f1525;
  --bg-tabs: #0f1525;
  --bg-simulator: #0d1220;
  --bg-code: #0c111f;
  --border: #26314a;
  --border-soft: rgba(130, 160, 220, 0.08);
  --text: #e6edf8;
  --text-heading: #f2f6fc;
  --text-muted: #8a9ab8;
  --text-body: #b8c5db;
  --text-code: #d4dff2;
  --accent: #4da3ff;
  --accent-hover: #3b90eb;
  --accent-soft: rgba(77, 163, 255, 0.14);
  --accent-glow: rgba(77, 163, 255, 0.28);
  --accent-on: #07111f;
  --accent-text: #b8dcff;
  --link: #7ab8ff;
  --danger: #ff6b6b;
  --danger-soft: rgba(255, 107, 107, 0.12);
  --shadow-soft: 0 12px 40px rgba(0, 0, 0, 0.42);
  --scrollbar-thumb: #33415f;
  --gate-glow-1: rgba(77, 163, 255, 0.16);
  --gate-glow-2: rgba(120, 90, 255, 0.1);
  --gate-bg-from: #0a0e1a;
  --gate-bg-to: #0d1424;
  --surface-hover: rgba(130, 160, 220, 0.06);
  --surface-weak: rgba(130, 160, 220, 0.04);
  --lesson-gradient-mid: #161e30;
  --lesson-gradient-end: #0d1220;
  --lesson-glow: rgba(77, 163, 255, 0.08);
  --code-gutter: #0a0e1a;
  --code-gutter-border: #1a2438;
  --code-selection: rgba(77, 163, 255, 0.2);
  --code-cursor: #b8dcff;
  --hljs-bg: #10182a;
  --hljs-text: #e6edf8;
  --inline-code-bg: rgba(130, 160, 220, 0.1);
  --inline-code-fg: #8ec5ff;
  --progress-track: #1e2a40;
  --footer-bg: rgba(10, 14, 26, 0.94);
  --topbar-bg: rgba(13, 18, 32, 0.94);
  --resizer-bg: #0a0e1a;
  --resizer-handle: #33415f;
  --sql-table-bg: #10182a;
  --sql-table-border: #26314a;
  --sql-table-head: #161e30;
  --cm-theme: material-darker;
  --text-nav: #a8b8d0;
  --text-nav-done: #b8dcff;
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.25);
  --overlay-bg: rgba(4, 8, 20, 0.75);
  --modal-bg: linear-gradient(165deg, #1a2438, #0f1525);
  --modal-border: rgba(77, 163, 255, 0.35);
  --community-bg: linear-gradient(165deg, rgba(77, 163, 255, 0.12), rgba(10, 14, 26, 0.45));
  --community-border: rgba(77, 163, 255, 0.35);
  --community-hover: #b8dcff;
  --progress-fill-start: #3b90eb;
  --gate-continue-top: #5bb0ff;
  --callout-bg: rgba(77, 163, 255, 0.1);
  --callout-border: rgba(77, 163, 255, 0.28);
  --console-ok: #a8b8d8;
  --console-run: #8a9ab8;
  --console-err: #ff8a8a;
  --console-success: #8ec5ff;
  --test-star: #e6c84d;
  --test-star-active: #3d2e00;
  --border-strong: #3d4f6e;
  --step-bg: rgba(130, 160, 220, 0.05);
  --step-hover-border: #4a6088;
  --step-active-bg: rgba(77, 163, 255, 0.18);
  --step-active-border: #4da3ff;
  --step-active-color: #b8dcff;
  --step-done-border: rgba(120, 180, 255, 0.45);
  --step-done-color: #8ec5ff;
  --step-test-border: rgba(230, 200, 77, 0.5);
  --step-test-color: #e6c84d;
  --ai-fab-bg: #152238;
  --ai-fab-border: rgba(77, 163, 255, 0.45);
  --ai-fab-text: #e8f1ff;
  --ai-fab-hint: #9ec5ff;
  --ai-drawer-bg: rgba(13, 18, 32, 0.97);
  --ai-fab-hover: #1a2d48;
  --ai-fab-active: #1f3a5c;
  --ai-bot-bg: #161e30;
  --ai-bot-strong: #f2f6fc;
  --ai-bot-code-bg: rgba(0, 0, 0, 0.28);
  --ai-user-bg: rgba(77, 163, 255, 0.14);
  --ai-user-border: rgba(77, 163, 255, 0.28);
  --ai-user-text: #d4e8ff;
}

/* ── Тема: Песок (светлая, тёплая editorial) ── */
[data-theme="sand-light"] {
  --bg-app: #faf7f2;
  --bg-sidebar: #f1ebe1;
  --bg-topbar: rgba(250, 247, 242, 0.9);
  --bg-content: #f7f3ec;
  --bg-lesson: #ffffff;
  --bg-panel: #f3ede4;
  --bg-elevated: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.92);
  --bg-input: #ffffff;
  --bg-tabs: #e9e2d7;
  --bg-simulator: #ede8df;
  --bg-code: #f5f1ea;
  --border: #ddd4c6;
  --border-soft: rgba(92, 74, 54, 0.09);
  --text: #2a2622;
  --text-heading: #1f1c18;
  --text-muted: #7a7268;
  --text-body: #4a4540;
  --text-code: #2d3a32;
  --accent: #5c8a3c;
  --accent-hover: #4e7732;
  --accent-soft: rgba(92, 138, 60, 0.13);
  --accent-glow: rgba(92, 138, 60, 0.24);
  --accent-on: #ffffff;
  --accent-text: #3d6228;
  --link: #3d6fa0;
  --danger: #b42318;
  --danger-soft: rgba(180, 35, 24, 0.1);
  --shadow-soft: 0 18px 50px rgba(62, 48, 32, 0.09);
  --scrollbar-thumb: #cfc5b6;
  --gate-glow-1: rgba(92, 138, 60, 0.14);
  --gate-glow-2: rgba(196, 149, 106, 0.12);
  --gate-bg-from: #faf7f2;
  --gate-bg-to: #f0e8dc;
  --surface-hover: rgba(62, 48, 32, 0.05);
  --surface-weak: rgba(255, 255, 255, 0.72);
  --lesson-gradient-mid: #ffffff;
  --lesson-gradient-end: #f7f3ec;
  --lesson-glow: rgba(92, 138, 60, 0.06);
  --code-gutter: #ebe5db;
  --code-gutter-border: #ddd4c6;
  --code-selection: rgba(92, 138, 60, 0.18);
  --code-cursor: #4e7732;
  --hljs-bg: #f0ebe3;
  --hljs-text: #2a2622;
  --inline-code-bg: rgba(92, 138, 60, 0.1);
  --inline-code-fg: #8b5a2b;
  --progress-track: #e5ddd0;
  --footer-bg: rgba(250, 247, 242, 0.94);
  --topbar-bg: rgba(250, 247, 242, 0.9);
  --resizer-bg: #f1ebe1;
  --resizer-handle: #cfc5b6;
  --sql-table-bg: #f7f3ec;
  --sql-table-border: #ddd4c6;
  --sql-table-head: #f0ebe3;
  --cm-theme: default;
  --text-nav: #5c5650;
  --text-nav-done: #3d6228;
  --shadow-card: 0 8px 32px rgba(62, 48, 32, 0.07), 0 1px 0 rgba(255, 255, 255, 0.8) inset;
  --overlay-bg: rgba(42, 38, 34, 0.38);
  --modal-bg: linear-gradient(165deg, #ffffff 0%, #f7f3ec 100%);
  --modal-border: rgba(92, 138, 60, 0.22);
  --community-bg: linear-gradient(165deg, rgba(92, 138, 60, 0.09), rgba(255, 255, 255, 0.65));
  --community-border: rgba(92, 138, 60, 0.26);
  --community-hover: #4e7732;
  --progress-fill-start: #6b9a48;
  --gate-continue-top: #7aad52;
  --callout-bg: rgba(61, 111, 160, 0.08);
  --callout-border: rgba(61, 111, 160, 0.2);
  --console-ok: #5c5650;
  --console-run: #7a7268;
  --console-err: #b42318;
  --console-success: #3d6228;
  --test-star: #b8860b;
  --test-star-active: #6b4f0a;
  --border-strong: #c4b8a8;
  --step-bg: rgba(255, 255, 255, 0.55);
  --step-hover-border: #c4b8a8;
  --step-active-bg: var(--accent-soft);
  --step-active-border: var(--accent);
  --step-active-color: var(--accent-text);
  --step-done-border: color-mix(in srgb, var(--accent) 35%, transparent);
  --step-done-color: var(--accent-text);
  --step-test-border: rgba(184, 134, 11, 0.35);
  --step-test-color: #9a7209;
  --ai-fab-bg: #ffffff;
  --ai-fab-border: color-mix(in srgb, var(--accent) 30%, transparent);
  --ai-fab-text: var(--text);
  --ai-fab-hint: var(--text-muted);
  --ai-drawer-bg: rgba(250, 247, 242, 0.97);
  --ai-fab-hover: #f7f3ec;
  --ai-fab-active: #f0ebe3;
  --ai-bot-bg: #ffffff;
  --ai-bot-strong: #1f1c18;
  --ai-bot-code-bg: rgba(92, 138, 60, 0.1);
  --ai-user-bg: rgba(92, 138, 60, 0.1);
  --ai-user-border: rgba(92, 138, 60, 0.22);
  --ai-user-text: #4a4540;
}

/* ── Тема: Снег (светлая, холодная porcelain) ── */
[data-theme="snow-light"] {
  --bg-app: #f4f7fb;
  --bg-sidebar: #e9eef5;
  --bg-topbar: rgba(244, 247, 251, 0.9);
  --bg-content: #f8fafd;
  --bg-lesson: #ffffff;
  --bg-panel: #eef2f8;
  --bg-elevated: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.94);
  --bg-input: #ffffff;
  --bg-tabs: #dfe6f0;
  --bg-simulator: #e8edf5;
  --bg-code: #f0f4fa;
  --border: #d1dae8;
  --border-soft: rgba(30, 60, 100, 0.08);
  --text: #1a2332;
  --text-heading: #111827;
  --text-muted: #64748b;
  --text-body: #374151;
  --text-code: #1e293b;
  --accent: #3b6fd9;
  --accent-hover: #2f5db8;
  --accent-soft: rgba(59, 111, 217, 0.11);
  --accent-glow: rgba(59, 111, 217, 0.22);
  --accent-on: #ffffff;
  --accent-text: #2554b8;
  --link: #2563eb;
  --danger: #dc2626;
  --danger-soft: rgba(220, 38, 38, 0.1);
  --shadow-soft: 0 18px 50px rgba(30, 60, 100, 0.08);
  --scrollbar-thumb: #b8c5d6;
  --gate-glow-1: rgba(59, 111, 217, 0.12);
  --gate-glow-2: rgba(56, 189, 198, 0.1);
  --gate-bg-from: #f4f7fb;
  --gate-bg-to: #e8eef5;
  --surface-hover: rgba(30, 60, 100, 0.05);
  --surface-weak: rgba(255, 255, 255, 0.75);
  --lesson-gradient-mid: #ffffff;
  --lesson-gradient-end: #f4f7fb;
  --lesson-glow: rgba(59, 111, 217, 0.05);
  --code-gutter: #e4eaf2;
  --code-gutter-border: #d1dae8;
  --code-selection: rgba(59, 111, 217, 0.16);
  --code-cursor: #2f5db8;
  --hljs-bg: #e8edf5;
  --hljs-text: #1a2332;
  --inline-code-bg: rgba(59, 111, 217, 0.09);
  --inline-code-fg: #b45309;
  --progress-track: #d5dde8;
  --footer-bg: rgba(244, 247, 251, 0.94);
  --topbar-bg: rgba(244, 247, 251, 0.9);
  --resizer-bg: #e9eef5;
  --resizer-handle: #b8c5d6;
  --sql-table-bg: #f4f7fb;
  --sql-table-border: #d1dae8;
  --sql-table-head: #e8edf5;
  --cm-theme: default;
  --text-nav: #4b5563;
  --text-nav-done: #2554b8;
  --shadow-card: 0 8px 32px rgba(30, 60, 100, 0.07), 0 1px 0 rgba(255, 255, 255, 0.85) inset;
  --overlay-bg: rgba(17, 24, 39, 0.36);
  --modal-bg: linear-gradient(165deg, #ffffff 0%, #eef2f8 100%);
  --modal-border: rgba(59, 111, 217, 0.2);
  --community-bg: linear-gradient(165deg, rgba(59, 111, 217, 0.08), rgba(255, 255, 255, 0.7));
  --community-border: rgba(59, 111, 217, 0.24);
  --community-hover: #2f5db8;
  --progress-fill-start: #5b8de8;
  --gate-continue-top: #5b8de8;
  --callout-bg: rgba(59, 111, 217, 0.07);
  --callout-border: rgba(59, 111, 217, 0.18);
  --console-ok: #4b5563;
  --console-run: #64748b;
  --console-err: #dc2626;
  --console-success: #2554b8;
  --test-star: #ca8a04;
  --test-star-active: #713f12;
  --border-strong: #b8c5d6;
  --step-bg: rgba(255, 255, 255, 0.6);
  --step-hover-border: #b8c5d6;
  --step-active-bg: var(--accent-soft);
  --step-active-border: var(--accent);
  --step-active-color: var(--accent-text);
  --step-done-border: color-mix(in srgb, var(--accent) 32%, transparent);
  --step-done-color: var(--accent-text);
  --step-test-border: rgba(202, 138, 4, 0.32);
  --step-test-color: #a16207;
  --ai-fab-bg: #ffffff;
  --ai-fab-border: color-mix(in srgb, var(--accent) 28%, transparent);
  --ai-fab-text: var(--text);
  --ai-fab-hint: var(--text-muted);
  --ai-drawer-bg: rgba(244, 247, 251, 0.97);
  --ai-fab-hover: #eef2f8;
  --ai-fab-active: #e4eaf2;
  --ai-bot-bg: #ffffff;
  --ai-bot-strong: #111827;
  --ai-bot-code-bg: rgba(59, 111, 217, 0.09);
  --ai-user-bg: rgba(59, 111, 217, 0.1);
  --ai-user-border: rgba(59, 111, 217, 0.2);
  --ai-user-text: #374151;
}

/* ── Тема: EXPERIMENTAL (контурный неон, киберпанк) ── */
[data-theme="meme"] {
  /* Палитра с cyberpunk-street: индиго-ночь + cyan + magenta */
  --bg-app: #050510;
  --bg-sidebar: rgba(10, 11, 30, 0.82);
  --bg-topbar: rgba(8, 8, 24, 0.88);
  --bg-content: #070812;
  --bg-lesson: rgba(12, 4, 34, 0.78);
  --bg-panel: rgba(18, 4, 40, 0.72);
  --bg-elevated: rgba(26, 8, 56, 0.75);
  --bg-card: rgba(10, 11, 30, 0.78);
  --bg-input: rgba(5, 5, 16, 0.85);
  --bg-tabs: rgba(8, 6, 22, 0.85);
  --bg-simulator: rgba(6, 6, 18, 0.8);
  --bg-code: rgba(3, 4, 12, 0.9);
  --border: rgba(0, 255, 255, 0.42);
  --border-soft: rgba(255, 0, 200, 0.28);
  --text: #eaf8ff;
  --text-heading: #ffffff;
  --text-muted: #8a7ab8;
  --text-body: #c8b8e8;
  --text-code: #7dfff9;
  --accent: #00ffff;
  --accent-hover: #7dffff;
  --accent-soft: transparent;
  --accent-glow: rgba(0, 255, 255, 0.5);
  --accent-on: #00ffff;
  --accent-text: #9affff;
  --link: #ff00c8;
  --danger: #ff2e6a;
  --danger-soft: transparent;
  --shadow-soft: 0 0 0 1px rgba(0, 255, 255, 0.2), 0 0 28px rgba(180, 0, 255, 0.12);
  --scrollbar-thumb: #3a2060;
  --gate-glow-1: rgba(255, 0, 200, 0.22);
  --gate-glow-2: rgba(0, 255, 255, 0.18);
  --gate-bg-from: #050510;
  --gate-bg-to: #120422;
  --surface-hover: rgba(0, 255, 255, 0.07);
  --surface-weak: rgba(180, 0, 255, 0.06);
  --lesson-gradient-mid: #120422;
  --lesson-gradient-end: #050510;
  --lesson-glow: rgba(0, 212, 255, 0.1);
  --code-gutter: #050510;
  --code-gutter-border: rgba(0, 255, 255, 0.22);
  --code-selection: rgba(0, 255, 255, 0.2);
  --code-cursor: #00ffff;
  --hljs-bg: rgba(8, 6, 22, 0.9);
  --hljs-text: #eaf8ff;
  --inline-code-bg: transparent;
  --inline-code-fg: #ffe566;
  --progress-track: rgba(0, 255, 255, 0.14);
  --footer-bg: rgba(5, 5, 16, 0.92);
  --topbar-bg: rgba(8, 8, 24, 0.9);
  --resizer-bg: #050510;
  --resizer-handle: #00ffff;
  --sql-table-bg: rgba(8, 6, 22, 0.85);
  --sql-table-border: rgba(0, 255, 255, 0.3);
  --sql-table-head: rgba(18, 4, 40, 0.9);
  --cm-theme: material-darker;
  --text-nav: #b0a0d8;
  --text-nav-done: #7dfff9;
  --shadow-card: 0 0 0 1px rgba(0, 255, 255, 0.3), 0 0 22px rgba(255, 0, 200, 0.1);
  --overlay-bg: rgba(2, 1, 8, 0.86);
  --modal-bg: rgba(12, 4, 34, 0.94);
  --modal-border: rgba(0, 255, 255, 0.55);
  --community-bg: transparent;
  --community-border: rgba(255, 0, 200, 0.55);
  --community-hover: #ff7ae8;
  --progress-fill-start: #00ffff;
  --gate-continue-top: #00ffff;
  --callout-bg: transparent;
  --callout-border: rgba(0, 255, 255, 0.45);
  --console-ok: #b0a0d8;
  --console-run: #8a7ab8;
  --console-err: #ff6b9d;
  --console-success: #7dfff9;
  --test-star: #ffe566;
  --test-star-active: #ffe566;
  --border-strong: rgba(0, 255, 255, 0.6);
  --step-bg: transparent;
  --step-hover-border: #00ffff;
  --step-active-bg: transparent;
  --step-active-border: #00ffff;
  --step-active-color: #9affff;
  --step-done-border: rgba(125, 255, 249, 0.55);
  --step-done-color: #7dfff9;
  --step-test-border: rgba(255, 229, 102, 0.7);
  --step-test-color: #ffe566;
  --ai-fab-bg: rgba(10, 11, 30, 0.88);
  --ai-fab-border: rgba(255, 0, 200, 0.75);
  --ai-fab-text: #ffffff;
  --ai-fab-hint: #ff7ae8;
  --ai-drawer-bg: rgba(8, 6, 22, 0.96);
  --ai-fab-hover: rgba(18, 4, 40, 0.96);
  --ai-fab-active: rgba(26, 8, 56, 0.98);
  --ai-bot-bg: transparent;
  --ai-bot-strong: #ffffff;
  --ai-bot-code-bg: transparent;
  --ai-user-bg: transparent;
  --ai-user-border: rgba(255, 0, 200, 0.55);
  --ai-user-text: #ffe8fb;
  --neon-pink: #ff00c8;
  --neon-cyan: #00ffff;
  --neon-violet: #b000ff;
  --neon-yellow: #ffe566;
}

/* ── Тема: Хардкор (Оргриммар / орки) ── */
[data-theme="hardcore"] {
  --bg-app: #120a04;
  --bg-sidebar: #1a1008;
  --bg-topbar: #160d06;
  --bg-content: #100804;
  --bg-lesson: #1e1208;
  --bg-panel: #24160c;
  --bg-elevated: #2c1a10;
  --bg-card: rgba(24, 14, 8, 0.95);
  --bg-input: #181008;
  --bg-tabs: #181008;
  --bg-simulator: #140c06;
  --bg-code: #0e0804;
  --border: #6b4a28;
  --border-soft: rgba(201, 162, 39, 0.14);
  --text: #e8dcc4;
  --text-heading: #f5ead2;
  --text-muted: #a89070;
  --text-body: #d4c4a8;
  --text-code: #c8e6a0;
  --accent: #6faa3c;
  --accent-hover: #5f9634;
  --accent-soft: rgba(111, 170, 60, 0.16);
  --accent-glow: rgba(111, 170, 60, 0.35);
  --accent-on: #0f1808;
  --accent-text: #b8e07a;
  --link: #d4a84b;
  --danger: #c43e1c;
  --danger-soft: rgba(196, 62, 28, 0.16);
  --shadow-soft: 0 12px 36px rgba(0, 0, 0, 0.55);
  --scrollbar-thumb: #5a4020;
  --gate-glow-1: rgba(111, 170, 60, 0.16);
  --gate-glow-2: rgba(196, 62, 28, 0.12);
  --gate-bg-from: #120a04;
  --gate-bg-to: #1a1008;
  --surface-hover: rgba(111, 170, 60, 0.08);
  --surface-weak: rgba(212, 168, 75, 0.06);
  --lesson-gradient-mid: #24160c;
  --lesson-gradient-end: #140c06;
  --lesson-glow: rgba(111, 170, 60, 0.08);
  --code-gutter: #0e0804;
  --code-gutter-border: #2c1a10;
  --code-selection: rgba(111, 170, 60, 0.22);
  --code-cursor: #b8e07a;
  --hljs-bg: #181008;
  --hljs-text: #e8dcc4;
  --inline-code-bg: rgba(111, 170, 60, 0.12);
  --inline-code-fg: #d4a84b;
  --progress-track: #2a1c10;
  --footer-bg: rgba(18, 10, 4, 0.95);
  --topbar-bg: rgba(22, 13, 6, 0.96);
  --resizer-bg: #120a04;
  --resizer-handle: #6b4a28;
  --sql-table-bg: #181008;
  --sql-table-border: #3a2818;
  --sql-table-head: #221408;
  --cm-theme: material-darker;
  --text-nav: #d4c4a8;
  --text-nav-done: #b8e07a;
  --shadow-card: 0 4px 18px rgba(0, 0, 0, 0.45);
  --overlay-bg: rgba(6, 3, 1, 0.82);
  --modal-bg: linear-gradient(165deg, #2c1a10, #1a1008);
  --modal-border: rgba(201, 162, 39, 0.45);
  --community-bg: linear-gradient(165deg, rgba(111, 170, 60, 0.12), rgba(24, 14, 8, 0.5));
  --community-border: rgba(111, 170, 60, 0.38);
  --community-hover: #b8e07a;
  --progress-fill-start: #6faa3c;
  --gate-continue-top: #7cb342;
  --callout-bg: rgba(212, 168, 75, 0.12);
  --callout-border: rgba(212, 168, 75, 0.32);
  --console-ok: #c4b498;
  --console-run: #a89070;
  --console-err: #e07050;
  --console-success: #9dbf70;
  --test-star: #d4a84b;
  --test-star-active: #3a2800;
  --border-strong: #8b6914;
  --step-bg: rgba(111, 170, 60, 0.06);
  --step-hover-border: #8b6914;
  --step-active-bg: rgba(111, 170, 60, 0.18);
  --step-active-border: #6faa3c;
  --step-active-color: #b8e07a;
  --step-done-border: rgba(155, 191, 112, 0.55);
  --step-done-color: #9dbf70;
  --step-test-border: rgba(212, 168, 75, 0.55);
  --step-test-color: #d4a84b;
  --ai-fab-bg: #24160c;
  --ai-fab-border: rgba(111, 170, 60, 0.45);
  --ai-fab-text: #f5ead2;
  --ai-fab-hint: #b8e07a;
  --ai-drawer-bg: rgba(22, 13, 6, 0.97);
  --ai-fab-hover: #2c1a10;
  --ai-fab-active: #342014;
  --ai-bot-bg: #24160c;
  --ai-bot-strong: #f5ead2;
  --ai-bot-code-bg: rgba(0, 0, 0, 0.32);
  --ai-user-bg: rgba(111, 170, 60, 0.12);
  --ai-user-border: rgba(111, 170, 60, 0.3);
  --ai-user-text: #e8f0d8;
  --orc-bronze: #c9a227;
  --orc-stone: #3a2818;
  --orc-fire: #c43e1c;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  width: 100%;
  overflow: hidden;
}

body {
  font-family: "IBM Plex Sans", sans-serif;
  background: var(--bg-app);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

* { scrollbar-width: thin; scrollbar-color: var(--scrollbar-thumb) transparent; }
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 99px;
  border: 2px solid transparent;
  background-clip: padding-box;
}

.hidden { display: none !important; }
.muted { color: var(--text-muted); }

.brand-mark {
  width: 28px; height: 28px;
  border-radius: 8px;
  background: linear-gradient(145deg, var(--accent), #3a9e1a);
  display: grid; place-items: center;
  font-weight: 700; font-size: 12px; color: var(--accent-on);
  box-shadow: 0 0 0 1px rgba(102, 196, 44, 0.25), 0 6px 16px var(--accent-glow);
}

/* ── Gate ── */
.gate-screen {
  display: none;
  position: relative;
  min-height: calc(100vh - var(--site-footer-h));
  min-height: calc(100dvh - var(--site-footer-h));
  flex-direction: column;
  overflow: auto;
  padding-bottom: var(--site-footer-h);
}
.gate-screen.visible { display: flex; }
.gate-bg {
  position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(70% 50% at 15% 10%, var(--gate-glow-1), transparent 55%),
    radial-gradient(50% 40% at 90% 20%, var(--gate-glow-2), transparent 50%),
    linear-gradient(180deg, var(--gate-bg-from) 0%, var(--gate-bg-to) 100%);
}
.gate-top {
  position: relative; z-index: 1;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 28px;
}
.gate-brand { display: flex; align-items: center; gap: 10px; font-weight: 700; }
.gate-top-right { display: flex; align-items: center; gap: 10px; color: var(--text-muted); font-size: 14px; }
.auth-link {
  background: none; border: none; color: var(--link);
  cursor: pointer; font: inherit; font-weight: 600; padding: 0;
}
.auth-link:hover { text-decoration: underline; }

.gate-main {
  position: relative; z-index: 1;
  flex: 1;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
  max-width: 1080px;
  width: 100%;
  margin: 0 auto;
  padding: 24px 28px 48px;
}

.gate-hero { animation: rise 0.55s var(--ease) both; }
.gate-eyebrow {
  color: var(--accent);
  font-size: 13px; font-weight: 600;
  letter-spacing: 0.04em; text-transform: uppercase;
  margin-bottom: 12px;
}
.gate-hero h1 {
  font-size: clamp(1.8rem, 3.4vw, 2.55rem);
  line-height: 1.15; letter-spacing: -0.03em;
  margin-bottom: 12px;
}
.gate-sub { color: var(--text-muted); font-size: 1.05rem; margin-bottom: 22px; }
.gate-points {
  list-style: none; display: grid; gap: 10px;
}
.gate-points li {
  color: var(--text-body);
  background: var(--surface-weak);
  border: 1px solid var(--border-soft);
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 0.95rem;
  line-height: 1.45;
}
.gate-points strong { color: var(--text); }

.gate-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 24px;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(10px);
  animation: rise 0.65s var(--ease) 0.05s both;
}

.auth-tabs {
  display: grid; grid-template-columns: 1fr 1fr; gap: 6px;
  background: var(--bg-tabs); border-radius: 12px; padding: 4px; margin-bottom: 18px;
}
.auth-tab {
  border: none; background: transparent; color: var(--text-muted);
  padding: 10px 12px; border-radius: 10px; cursor: pointer;
  font: inherit; font-weight: 600; transition: 0.2s var(--ease);
}
.auth-tab.active {
  background: var(--bg-elevated); color: var(--text);
  box-shadow: 0 1px 0 rgba(255,255,255,0.04);
}
.auth-step { display: none; }
.auth-step.active { display: block; animation: fade 0.25s var(--ease); }
.auth-field { margin-bottom: 12px; }
.auth-field label {
  display: block; font-size: 12px; color: var(--text-muted);
  margin-bottom: 6px; font-weight: 500;
}
.auth-field input {
  width: 100%;
  background: var(--bg-tabs);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 10px;
  padding: 12px 14px;
  font: inherit;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.auth-field input:focus {
  outline: none;
  border-color: rgba(102, 196, 44, 0.55);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.gate-continue {
  width: 100%;
  margin-top: 4px;
  border: none;
  background: linear-gradient(180deg, var(--gate-continue-top), var(--accent));
  color: var(--accent-on);
  font: inherit; font-weight: 700;
  padding: 12px 16px;
  border-radius: 10px;
  cursor: pointer;
  transition: transform 0.15s var(--ease), filter 0.15s;
}
.gate-continue:hover { filter: brightness(1.05); transform: translateY(-1px); }
.auth-hint { margin-top: 10px; font-size: 12px; color: var(--text-muted); }
.auth-status { margin-top: 10px; font-size: 13px; min-height: 1.2em; }
.auth-status.ok { color: var(--accent); }
.auth-status.err { color: #ff7b7b; }
.gate-legal {
  margin-top: 18px; font-size: 12px; color: var(--text-muted); line-height: 1.5;
}
.gate-legal a { color: var(--link); }

.auth-consent {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin: 14px 0 10px;
  font-size: 12px;
  line-height: 1.45;
  color: var(--text-muted);
  cursor: pointer;
}
.auth-consent input {
  margin-top: 2px;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
}
.auth-consent a { color: var(--link); }

/* Cookie banner */
.cookie-banner {
  position: fixed;
  inset: 0;
  z-index: 20000;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 16px;
  background: var(--overlay-bg);
}
.cookie-banner[hidden] { display: none !important; }
.cookie-card {
  width: min(520px, 100%);
  background: var(--modal-bg);
  border: 1px solid var(--modal-border);
  border-radius: 16px;
  padding: 18px 18px 16px;
  box-shadow: var(--shadow-soft);
  margin-bottom: 12px;
}
.cookie-card h2 {
  margin: 0 0 8px;
  font-size: 17px;
}
.cookie-card p {
  margin: 0 0 14px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-muted);
}
.cookie-card a { color: var(--link); }
.cookie-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  flex-wrap: wrap;
}
.cookie-decline, .cookie-accept {
  border: none;
  border-radius: 10px;
  padding: 10px 16px;
  font: inherit;
  font-weight: 700;
  font-size: 13px;
  cursor: pointer;
}
.cookie-decline {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.cookie-decline:hover { color: var(--text); }
.cookie-accept {
  background: var(--accent);
  color: var(--accent-on);
  box-shadow: 0 4px 14px var(--accent-glow);
}

@keyframes rise {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: none; }
}
@keyframes fade {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ── App shell ── */
.app-shell {
  display: flex; flex-direction: column;
  height: calc(100vh - var(--site-footer-h));
  height: calc(100dvh - var(--site-footer-h));
  width: 100%; overflow: hidden;
  position: relative;
}
.app-shell.hidden { display: none !important; }

.topbar {
  height: var(--topbar-h);
  flex-shrink: 0;
  display: flex; align-items: center; gap: 12px;
  padding: 0 12px;
  background: var(--topbar-bg);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  z-index: 40;
}
.sidebar-toggle {
  width: 36px; height: 36px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text);
  border-radius: 8px;
  cursor: pointer; font-size: 16px;
  transition: 0.2s var(--ease);
}
.sidebar-toggle:hover { border-color: var(--accent); color: var(--accent); }
.topbar-brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-name { font-weight: 700; font-size: 14px; letter-spacing: -0.01em; }
@media (max-width: 1100px) {
  .brand-name { max-width: 120px; overflow: hidden; text-overflow: ellipsis; }
}

.course-switch {
  display: flex; gap: 4px;
  background: var(--bg-tabs);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 3px;
  flex-shrink: 0;
}
.course-chip {
  border: none; background: transparent;
  color: var(--text-muted);
  padding: 7px 14px;
  border-radius: 999px;
  cursor: pointer;
  font: inherit; font-size: 13px; font-weight: 600;
  transition: 0.2s var(--ease);
}
.course-chip.active {
  background: var(--accent);
  color: var(--accent-on);
  box-shadow: 0 4px 14px var(--accent-glow);
}
.course-chip:not(.active):hover { color: var(--text); }
.course-switch-locked {
  opacity: 0.55;
  pointer-events: none;
  cursor: not-allowed;
}
.course-switch-locked .course-chip {
  cursor: not-allowed;
}

.play-mode-switch {
  display: flex;
  gap: 4px;
  padding: 3px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
}
.play-mode-chip {
  border: none;
  background: transparent;
  color: var(--text-muted);
  font: inherit;
  font-size: 12px;
  font-weight: 600;
  padding: 6px 10px;
  border-radius: 7px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.play-mode-chip.active {
  background: var(--accent-soft);
  color: var(--accent-text);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent) 35%, transparent);
}
.play-mode-chip[data-play-mode="hardcore"].active {
  background: rgba(196, 62, 28, 0.18);
  color: #f0a080;
  box-shadow: inset 0 0 0 1px rgba(196, 62, 28, 0.45);
}
.play-mode-chip:not(.active):hover { color: var(--text); }
.play-mode-chip.play-mode-locked,
.play-mode-chip.play-mode-locked:hover {
  opacity: 0.45;
  cursor: not-allowed;
  color: var(--text-muted);
}

.hardcore-mode-badge {
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.08em;
  padding: 4px 8px;
  border-radius: 6px;
  border: 1px solid rgba(196, 62, 28, 0.55);
  background: rgba(196, 62, 28, 0.14);
  color: #f0a080;
}

.lesson-btn.locked,
.page-step.locked {
  opacity: 0.42;
  cursor: not-allowed;
  filter: grayscale(0.35);
}
.page-step.locked {
  pointer-events: none;
}

.topbar-progress {
  flex: 1 1 auto; min-width: 120px; max-width: 280px;
  display: flex; flex-direction: column; gap: 5px;
}
.topbar-progress-meta {
  display: flex; justify-content: space-between;
  font-size: 11px; color: var(--text-muted); font-weight: 600;
}
.topbar-progress-bar, .sidebar-progress-bar {
  height: 6px; background: var(--progress-track); border-radius: 99px; overflow: hidden;
}
.topbar-progress-fill, .sidebar-progress-fill {
  height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--progress-fill-start), var(--accent));
  border-radius: 99px;
  transition: width 0.45s var(--ease);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  min-width: 0;
  flex-shrink: 1;
}
#user-display {
  display: none;
  align-items: center;
  gap: 8px;
  max-width: min(132px, 24vw);
  min-width: 0;
  padding: 3px 8px 3px 3px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 999px;
  overflow: hidden;
}
#user-display.visible { display: flex; }
.user-avatar {
  width: 26px;
  height: 26px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--surface-hover);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 11px;
  font-weight: 700;
  line-height: 1;
}
.user-meta {
  display: flex;
  flex-direction: column;
  gap: 0;
  min-width: 0;
  overflow: hidden;
}
#user-role-name {
  color: var(--text);
  font-size: 12px;
  font-weight: 600;
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
#user-email { display: none !important; }

.btn-logout {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 6px 10px;
  cursor: pointer;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  font-family: inherit;
  transition: 0.2s var(--ease);
  flex-shrink: 0;
}
.btn-logout:hover {
  color: var(--text);
  border-color: var(--border-strong);
  background: var(--surface-hover);
}

.mode-tabs { display: flex; gap: 4px; }
.mode-tab {
  padding: 7px 12px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 12px; cursor: pointer; border-radius: 8px; font-family: inherit;
}
.mode-tab.active { background: var(--accent); color: var(--accent-on); border-color: var(--accent); font-weight: 700; }
.mode-tabs.hidden { display: none; }

.app-body {
  flex: 1; min-height: 0; display: flex; overflow: hidden; position: relative;
}
.sidebar-backdrop {
  display: none; position: absolute; inset: 0;
  background: var(--overlay-bg); z-index: 25; border: none; cursor: pointer;
}

.sidebar {
  width: var(--sidebar-w);
  flex: 0 0 var(--sidebar-w);
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column; overflow: hidden; z-index: 30;
  transition: width 0.28s var(--ease), flex-basis 0.28s var(--ease), transform 0.28s var(--ease);
}
.app-shell.sidebar-collapsed .sidebar {
  width: 0; flex-basis: 0; border-right-color: transparent;
}
.sidebar-course {
  padding: 16px; border-bottom: 1px solid var(--border); flex-shrink: 0;
}
.sidebar-course-title { font-size: 15px; font-weight: 700; margin-bottom: 8px; }
.sidebar-progress-label { font-size: 12px; color: var(--text-muted); margin-bottom: 8px; }
#lesson-list { flex: 1; overflow-y: auto; padding: 8px 0; }

.module-toggle {
  width: 100%; display: flex; gap: 8px; align-items: flex-start;
  padding: 12px 14px; background: transparent; border: none; color: var(--text);
  text-align: left; font: inherit; font-size: 13px; font-weight: 600; cursor: pointer;
  transition: background 0.15s;
}
.module-toggle:hover { background: var(--surface-hover); }
.module-chevron {
  width: 16px; margin-top: 2px; color: var(--text-muted); font-size: 10px;
  transition: transform 0.2s var(--ease);
}
.module-block.open .module-chevron { transform: rotate(90deg); color: var(--accent); }
.module-lessons { display: none; padding: 0 8px 8px 12px; }
.module-block.open .module-lessons { display: block; animation: fade 0.2s var(--ease); }

.lesson-btn {
  width: 100%; padding: 9px 12px 9px 18px;
  background: transparent; border: 1px solid transparent;
  color: var(--text-nav); text-align: left; font: inherit; font-size: 13px;
  cursor: pointer; border-radius: 8px; margin-bottom: 2px;
  display: flex; gap: 8px; line-height: 1.35;
  transition: 0.18s var(--ease);
}
.lesson-btn:hover { background: var(--surface-hover); color: var(--text); }
.lesson-btn.done { background: var(--accent-soft); color: var(--text-nav-done); border-color: color-mix(in srgb, var(--accent) 28%, transparent); }
.lesson-btn.active {
  background: var(--accent); color: var(--accent-on); font-weight: 700;
  box-shadow: 0 6px 18px var(--accent-glow);
}
.lesson-btn .done-mark { width: 16px; flex-shrink: 0; font-weight: 700; color: var(--accent); }
.lesson-btn.active .done-mark { color: var(--accent-on); }
.lesson-btn .test-stars {
  flex-shrink: 0;
  color: var(--test-star);
  letter-spacing: -1px;
  font-size: 12px;
  line-height: 1;
  margin-right: 2px;
}
.lesson-btn.module-test-lesson { font-weight: 600; }
.lesson-btn.module-test-lesson.active .test-stars { color: var(--test-star-active); }

.sidebar-footer {
  padding: 12px 16px; border-top: 1px solid var(--border); font-size: 12px;
}
.sidebar-footer a {
  color: var(--link); text-decoration: none; display: block; margin-bottom: 6px;
}
.sidebar-footer a.admin-only-link[hidden] { display: none !important; }
.sidebar-footer a.sidebar-community {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--community-border);
  background: var(--community-bg);
  color: var(--accent);
  font-weight: 600;
  font-size: 13px;
}
.sidebar-footer a.sidebar-community:hover {
  border-color: color-mix(in srgb, var(--accent) 55%, transparent);
  color: var(--community-hover);
}

/* Нижний футер сайта */
.site-footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 35;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 6px 14px;
  min-height: var(--site-footer-h);
  padding: 6px 16px;
  font-size: 11px;
  color: var(--text-muted);
  background: var(--footer-bg);
  border-top: 1px solid var(--border);
  backdrop-filter: blur(10px);
}
.site-footer-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 4px 10px;
}
.site-footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  white-space: nowrap;
}
.site-footer-links a:hover { color: var(--link); }
.site-footer-links a.admin-only-link[hidden] { display: none !important; }
.site-footer-copy {
  color: var(--text-muted);
  opacity: 0.85;
  white-space: nowrap;
}

.community-link.topbar-community,
.community-link.gate-community {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  border-radius: 999px;
  border: 1px solid var(--community-border);
  background: var(--community-bg);
  color: var(--accent);
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
}
.community-link.topbar-community:hover,
.community-link.gate-community:hover {
  border-color: color-mix(in srgb, var(--accent) 60%, transparent);
  background: var(--accent-soft);
  color: var(--community-hover);
}
.gate-community { margin-right: 4px; }

.milestone-modal {
  position: fixed;
  inset: 0;
  z-index: 1200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: var(--overlay-bg);
  backdrop-filter: blur(4px);
}
.milestone-modal[hidden] { display: none !important; }
.milestone-card {
  width: min(420px, 100%);
  background: var(--modal-bg);
  border: 1px solid var(--modal-border);
  border-radius: 18px;
  box-shadow: var(--shadow-soft);
  padding: 28px 24px 22px;
  text-align: center;
  animation: tour-pop 0.28s var(--ease);
}
.milestone-emoji {
  font-size: 42px;
  line-height: 1;
  margin-bottom: 10px;
  filter: drop-shadow(0 2px 8px rgba(0,0,0,0.35));
}
.milestone-card h2 {
  margin: 0 0 10px;
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
}
.milestone-card p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.5;
  color: var(--text-muted);
}
.milestone-hint {
  margin: 0 0 20px !important;
  font-size: 13px !important;
  line-height: 1.45 !important;
  color: var(--text-muted);
  opacity: 0.9;
}
.milestone-hint a {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 2px;
  font-weight: 500;
}
.milestone-hint a:hover { color: var(--link); opacity: 0.85; }
.milestone-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}
.milestone-dismiss {
  border: none;
  background: var(--accent);
  color: var(--accent-on);
  font: inherit;
  font-size: 14px;
  font-weight: 700;
  padding: 10px 22px;
  border-radius: 10px;
  cursor: pointer;
  box-shadow: 0 6px 18px var(--accent-glow);
}
.milestone-dismiss:hover { filter: brightness(1.05); }

.main-content { flex: 1; min-width: 0; display: flex; overflow: hidden; background: var(--bg-content); }
#student-view { display: flex; flex: 1; flex-direction: column; min-width: 0; overflow: hidden; position: relative; }
#student-view.hidden { display: none; }

.lesson-toolbar {
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 10px 16px;
  background: var(--bg-topbar);
  border-bottom: 1px solid var(--border);
}
.lesson-toolbar-left { display: flex; align-items: center; gap: 12px; min-width: 0; }
.lesson-toolbar h1 {
  font-size: 15px; font-weight: 600; white-space: nowrap;
  overflow: hidden; text-overflow: ellipsis;
}
.lesson-step-meta {
  font-size: 12px; color: var(--text-muted); white-space: nowrap;
  background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: 999px; padding: 5px 10px; font-weight: 500;
}

/* Превью таблиц в SQL-задачах */
.sql-data-tables {
  margin: 14px 0 8px;
  padding: 12px 14px;
  background: var(--sql-table-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
}
.sql-data-tables > h2 {
  margin: 0 0 6px;
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
}
.sql-data-note {
  margin: 0 0 12px;
  font-size: 12px;
  color: var(--text-muted);
}
.sql-data-block { margin-bottom: 14px; }
.sql-data-block:last-child { margin-bottom: 0; }
.sql-data-block h3 {
  margin: 0 0 8px;
  font-size: 13px;
  font-weight: 600;
}
.sql-data-block h3 code {
  font-family: "IBM Plex Mono", monospace;
  color: var(--accent);
  font-size: 13px;
}
.sql-data-scroll {
  overflow-x: auto;
  border-radius: 8px;
  border: 1px solid var(--sql-table-border);
}
table.sql-data {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
  font-family: "IBM Plex Mono", monospace;
  min-width: 220px;
}
table.sql-data th,
table.sql-data td {
  padding: 6px 10px;
  text-align: left;
  border-bottom: 1px solid var(--sql-table-border);
  white-space: nowrap;
}
table.sql-data th {
  background: var(--sql-table-head);
  color: var(--text-muted);
  font-weight: 600;
  position: sticky;
  top: 0;
}
table.sql-data td { color: var(--text); }
table.sql-data tr:last-child td { border-bottom: none; }
table.sql-data tbody tr:nth-child(even) td { background: var(--surface-weak); }

/* Markdown-таблицы в теории — тот же контейнер/вид, что sql-data */
.lesson-panel .sql-data-scroll {
  margin: 12px 0;
  overflow-x: auto;
  border-radius: 8px;
  border: 1px solid var(--sql-table-border);
}
.lesson-panel table.sql-data code {
  font-family: "IBM Plex Mono", monospace;
  background: var(--inline-code-bg);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 12px;
}

.page-stepper {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  padding: 10px 16px 0;
  background: var(--bg-topbar);
  border-bottom: 1px solid var(--border);
  padding-bottom: 12px;
}
.page-stepper[hidden] { display: none !important; }
.page-step {
  min-width: 34px;
  height: 34px;
  padding: 0 8px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--step-bg);
  color: var(--text-muted);
  font: inherit;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, border-color 0.15s, color 0.15s, transform 0.15s;
}
.page-step:hover {
  color: var(--text);
  border-color: var(--step-hover-border);
  transform: translateY(-1px);
}
.page-step.active {
  background: var(--step-active-bg);
  border-color: var(--step-active-border);
  color: var(--step-active-color);
}
.page-step.done:not(.active) {
  border-color: var(--step-done-border);
  color: var(--step-done-color);
}
  .page-step.theory { font-size: 12px; letter-spacing: 0.02em; }
.page-step.test {
  border-color: var(--step-test-border);
  color: var(--step-test-color);
  font-size: 11px;
  min-width: 36px;
  padding: 0 8px;
  letter-spacing: -1px;
}
.page-step.test.diff-1 { min-width: 28px; }
.page-step.test.diff-2 { min-width: 34px; }
.page-step.test.diff-3 { min-width: 42px; }
.simulator-panel.theory-mode .editor-actions,
.simulator-panel.theory-mode #code-editor-container {
  display: none;
}
.simulator-panel.theory-mode .console {
  min-height: 140px;
}
.lesson-nav { display: flex; gap: 8px; flex-shrink: 0; }
.nav-btn {
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text);
  border-radius: 8px;
  padding: 7px 12px;
  font: inherit; font-size: 13px; font-weight: 600;
  cursor: pointer;
  transition: 0.18s var(--ease);
}
.nav-btn:hover:not(:disabled) { border-color: #4a5868; }
.nav-btn:disabled { opacity: 0.4; cursor: default; }
.nav-btn-primary {
  background: var(--accent-soft);
  border-color: rgba(102,196,44,0.35);
  color: var(--accent-text);
}
.nav-btn-primary:hover:not(:disabled) {
  background: rgba(102,196,44,0.22);
  color: #e6ffc8;
}
.nav-btn-success {
  background: linear-gradient(180deg, var(--gate-continue-top), var(--accent)) !important;
  border-color: var(--accent) !important;
  color: var(--accent-on) !important;
  box-shadow: 0 0 0 3px var(--accent-soft), 0 4px 18px var(--accent-glow);
  animation: next-btn-pulse 1.6s ease-in-out infinite;
}
.nav-btn-success:hover:not(:disabled) {
  filter: brightness(1.06);
  color: var(--accent-on) !important;
}

.next-task-cta {
  display: block;
  width: 100%;
  margin-top: 10px;
  padding: 14px 18px;
  border: none;
  border-radius: 12px;
  background: linear-gradient(180deg, var(--gate-continue-top), var(--accent));
  color: var(--accent-on);
  font: inherit;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.02em;
  cursor: pointer;
  box-shadow: 0 0 0 3px var(--accent-soft), 0 8px 24px var(--accent-glow);
  animation: next-btn-pulse 1.6s ease-in-out infinite;
  transition: transform 0.15s var(--ease), filter 0.15s;
}
.next-task-cta:hover {
  transform: translateY(-1px);
  filter: brightness(1.05);
}
.next-task-cta[hidden] {
  display: none !important;
}

@keyframes next-btn-pulse {
  0%, 100% { box-shadow: 0 0 0 3px var(--accent-soft), 0 8px 24px var(--accent-glow); }
  50% { box-shadow: 0 0 0 6px var(--accent-soft), 0 10px 32px var(--accent-glow); }
}

.student-split {
  flex: 1; min-height: 0; display: flex; overflow: hidden;
}

.lesson-panel {
  flex: 0 0 calc(var(--lesson-ratio) * 100%);
  min-width: 240px;
  padding: 28px 32px 48px;
  overflow-y: auto;
  background:
    radial-gradient(80% 50% at 0% 0%, var(--lesson-glow), transparent 50%),
    linear-gradient(180deg, var(--lesson-gradient-mid) 0%, var(--bg-lesson) 50%, var(--lesson-gradient-end) 100%);
  color: var(--text-body);
  font-size: 16.5px; line-height: 1.72;
  animation: fade 0.3s var(--ease);
}
.lesson-panel h1 {
  color: var(--text-heading); margin-bottom: 16px;
  font-size: 1.6rem; font-weight: 700; letter-spacing: -0.02em;
}
.lesson-panel h2 {
  color: var(--accent); margin: 24px 0 10px;
  font-size: 1.1rem; font-weight: 600;
}
.lesson-panel p, .lesson-panel ul, .lesson-panel ol { margin-bottom: 14px; max-width: 62ch; }
.lesson-panel li { margin-bottom: 6px; }
.lesson-panel .lesson-callout {
  background: var(--callout-bg);
  border: 1px solid var(--callout-border);
  border-radius: 12px; padding: 12px 14px; margin: 16px 0;
}
.lesson-panel .lesson-diagram { margin: 16px 0; max-width: 100%; overflow-x: auto; }

.split-resizer {
  flex: 0 0 12px;
  cursor: col-resize;
  background: var(--resizer-bg);
  position: relative;
  z-index: 5;
  transition: background 0.15s;
}
.split-resizer::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 4px;
  height: 48px;
  background: var(--resizer-handle);
  border-radius: 99px;
  box-shadow: 0 0 0 1px rgba(255,255,255,0.04);
  transition: background 0.15s, height 0.15s, box-shadow 0.15s;
}
.split-resizer::after {
  content: "⋮";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1;
  pointer-events: none;
  opacity: 0.85;
}
.split-resizer:hover::before,
.split-resizer:focus-visible::before,
body.resizing .split-resizer::before {
  background: var(--accent);
  height: 64px;
  box-shadow: 0 0 12px var(--accent-glow);
}
.split-resizer:hover::after,
.split-resizer:focus-visible::after,
body.resizing .split-resizer::after {
  color: var(--accent-on);
}
body.resizing { cursor: col-resize; user-select: none; }
body.resizing iframe, body.resizing textarea { pointer-events: none; }

.simulator-panel {
  flex: 1 1 auto;
  min-width: 280px;
  display: flex; flex-direction: column;
  background: var(--bg-simulator);
  border-left: 1px solid transparent;
}
.editor-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 14px; border-bottom: 1px solid var(--border); flex-shrink: 0;
}
.engine-badge {
  font-size: 12px; font-weight: 700;
  background: var(--accent-soft);
  color: var(--accent-text);
  border: 1px solid rgba(102,196,44,0.3);
  border-radius: 999px;
  padding: 5px 10px;
}
.engine-badge.sql {
  background: rgba(91,160,255,0.12);
  color: #9ec5ff;
  border-color: rgba(91,160,255,0.3);
}
.engine-status { font-size: 12px; color: var(--text-muted); font-weight: 500; }

#code-editor-container {
  flex: 1;
  min-height: 140px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-radius: 0;
}
#code-editor {
  width: 100%; height: 100%; resize: none;
  background: var(--bg-code); color: var(--text-code);
  border: none; outline: none;
  padding: 14px 16px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 14px; line-height: 1.55;
  tab-size: 4;
}
#code-editor-container .CodeMirror {
  flex: 1;
  height: 100% !important;
  min-height: 160px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 14px;
  line-height: 1.55;
  background: var(--bg-code);
  color: var(--text-code);
  border: none;
}
#code-editor-container .CodeMirror-scroll {
  min-height: 100%;
}
#code-editor-container .CodeMirror-gutters {
  background: var(--code-gutter) !important;
  border-right: 1px solid var(--code-gutter-border);
  min-width: 36px;
}
#code-editor-container .CodeMirror-linenumbers {
  width: 36px !important;
}
#code-editor-container .CodeMirror-linenumber {
  color: var(--text-muted) !important;
  padding: 0 8px 0 4px;
  min-width: 28px;
}
#code-editor-container .CodeMirror-cursor {
  border-left-color: var(--code-cursor);
}
#code-editor-container .CodeMirror-selected {
  background: var(--code-selection) !important;
}

/* Подсветка в теории / задачах */
.lesson-panel pre {
  background: var(--hljs-bg); border: 1px solid var(--border); border-radius: 10px;
  padding: 0; overflow-x: auto;
  font-family: "IBM Plex Mono", monospace; font-size: 0.9em; margin-bottom: 14px;
}
.lesson-panel pre code,
.lesson-panel pre code.hljs {
  display: block;
  padding: 12px 14px;
  background: transparent !important;
  font-family: inherit;
  font-size: inherit;
  line-height: 1.55;
  overflow-x: auto;
}
.lesson-panel code:not(pre code) {
  background: var(--inline-code-bg);
  padding: 0.12em 0.4em; border-radius: 5px;
  font-family: "IBM Plex Mono", monospace; color: var(--inline-code-fg); font-size: 0.88em;
}

.ai-msg.bot pre code.hljs {
  background: transparent !important;
  padding: 0;
}

.editor-actions {
  display: flex;
  gap: 10px;
  align-items: stretch;
  margin-top: 10px;
}
.editor-actions .run-btn {
  flex: 1;
  margin-top: 0;
}
.reset-btn {
  flex: 0 0 auto;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  border-radius: 10px;
  padding: 0 14px;
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}
.reset-btn:hover {
  color: var(--text);
  border-color: #6a7d94;
  background: rgba(255, 255, 255, 0.04);
}
.run-btn {
  margin: 10px 12px 0;
  border: none;
  background: linear-gradient(180deg, var(--gate-continue-top), var(--accent));
  color: var(--accent-on);
  font: inherit; font-weight: 700; font-size: 14px;
  padding: 12px 16px; border-radius: 10px; cursor: pointer;
  transition: 0.18s var(--ease);
}
.run-btn:hover:not(:disabled) { filter: brightness(1.05); transform: translateY(-1px); }
.run-btn:disabled { opacity: 0.55; cursor: default; transform: none; }

.console {
  margin: 10px 12px 12px;
  min-height: 120px; max-height: 34%;
  overflow: auto;
  background: var(--hljs-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  color: var(--text-muted);
  font-family: "IBM Plex Mono", monospace;
  font-size: 13px; line-height: 1.45;
  white-space: pre-wrap;
}
.console.is-ok { color: var(--console-ok); }
.console.is-run { color: var(--console-run); }
.console.is-err { color: var(--console-err); }
.console.is-success { color: var(--console-success); }

/* AI tutor panel */
.ai-fab {
  position: fixed;
  right: 28px;
  bottom: calc(28px + var(--site-footer-h));
  z-index: 50;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  border: 1px solid var(--ai-fab-border);
  background: var(--ai-fab-bg);
  color: var(--ai-fab-text);
  border-radius: 16px;
  padding: 14px 18px;
  font: inherit;
  cursor: pointer;
  box-shadow: var(--shadow-card);
  transition: transform 0.18s var(--ease), background 0.18s, border-color 0.18s, right 0.2s;
  text-align: left;
  min-width: 148px;
}
.ai-fab-avatar {
  display: none;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  border: 2px solid color-mix(in srgb, var(--accent) 55%, transparent);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
}
.ai-fab-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
[data-theme="meme"] .ai-fab {
  flex-direction: row;
  align-items: center;
  gap: 12px;
  min-width: 0;
  padding: 10px 14px 10px 10px;
}
[data-theme="meme"] .ai-fab-avatar {
  display: block;
}
.ai-fab-label {
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.01em;
}
.ai-fab-hint {
  font-size: 12px;
  font-weight: 500;
  color: var(--ai-fab-hint);
  opacity: 0.9;
}
.ai-fab:hover {
  background: var(--ai-fab-hover);
  border-color: color-mix(in srgb, var(--accent) 45%, transparent);
  transform: translateY(-2px);
}
.ai-fab.active {
  background: var(--ai-fab-active);
  border-color: var(--accent);
  right: min(408px, calc(92vw + 16px));
}

.ai-drawer {
  position: absolute;
  top: var(--topbar-h);
  right: 0;
  bottom: 0;
  width: min(400px, 92vw);
  background: var(--ai-drawer-bg);
  border-left: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
  display: none;
  flex-direction: column;
  z-index: 45;
  backdrop-filter: blur(12px);
  animation: rise 0.28s var(--ease);
}
.ai-drawer.open { display: flex; }
.ai-drawer-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 10px; padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.ai-drawer-head h2 { font-size: 15px; font-weight: 700; }
.ai-drawer-sub { font-size: 12px; color: var(--text-muted); margin-top: 2px; }
.ai-close {
  border: 1px solid var(--border); background: var(--bg-elevated);
  color: var(--text-muted); border-radius: 8px; width: 34px; height: 34px;
  cursor: pointer; font-size: 16px;
}
.ai-close:hover { color: var(--text); }
.ai-messages {
  flex: 1; overflow-y: auto; padding: 14px 16px;
  display: flex; flex-direction: column; gap: 10px;
}
.ai-msg {
  border-radius: 12px; padding: 10px 12px;
  font-size: 13.5px; line-height: 1.55; max-width: 95%;
  word-break: break-word;
}
.ai-msg.bot {
  background: var(--ai-bot-bg);
  border: 1px solid var(--border);
  color: var(--text-body);
  align-self: flex-start;
  white-space: normal;
}
.ai-msg.bot p { margin: 0 0 0.55em; }
.ai-msg.bot p:last-child { margin-bottom: 0; }
.ai-msg.bot ul, .ai-msg.bot ol {
  margin: 0.35em 0 0.55em;
  padding-left: 1.2em;
}
.ai-msg.bot li { margin: 0.15em 0; }
.ai-msg.bot strong { color: var(--ai-bot-strong); font-weight: 700; }
.ai-msg.bot code {
  font-family: "IBM Plex Mono", monospace;
  font-size: 12.5px;
  background: var(--ai-bot-code-bg);
  color: var(--text-code);
  border-radius: 4px;
  padding: 1px 5px;
}
.ai-msg.bot pre {
  margin: 0.5em 0;
  padding: 10px 12px;
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow-x: auto;
}
.ai-msg.bot pre code {
  background: none;
  padding: 0;
  font-size: 12.5px;
  line-height: 1.45;
  white-space: pre;
}
.ai-msg-with-avatar {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  max-width: 100%;
  padding: 0;
  background: transparent;
  border: none;
  align-self: flex-start;
}
.ai-msg-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  border: 2px solid var(--border);
}
.ai-msg-with-avatar .ai-msg-body {
  flex: 1;
  min-width: 0;
  background: var(--ai-bot-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--text-body);
}
.ai-msg.user {
  background: var(--ai-user-bg);
  border: 1px solid var(--ai-user-border);
  color: var(--ai-user-text);
  align-self: flex-end;
  white-space: pre-wrap;
}
.ai-msg.system { color: var(--text-muted); font-size: 12.5px; align-self: center; text-align: center; white-space: pre-wrap; }
.ai-compose {
  border-top: 1px solid var(--border);
  padding: 12px; display: flex; flex-direction: column; gap: 8px; flex-shrink: 0;
}
.ai-compose textarea {
  width: 100%; min-height: 72px; resize: vertical;
  background: var(--bg-tabs); border: 1px solid var(--border); color: var(--text);
  border-radius: 10px; padding: 10px 12px; font: inherit; font-size: 13.5px;
}
.ai-compose textarea:focus {
  outline: none;
  border-color: color-mix(in srgb, var(--accent) 50%, transparent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.ai-send {
  border: none;
  background: linear-gradient(180deg, var(--gate-continue-top), var(--accent));
  color: var(--accent-on); font: inherit; font-weight: 700;
  padding: 10px 14px; border-radius: 10px; cursor: pointer;
}
.ai-send:disabled { opacity: 0.55; cursor: default; }

/* Admin */
#admin-view {
  display: none; flex: 1; flex-direction: column; min-width: 0; overflow: hidden;
}
#admin-view.visible { display: flex; }
.admin-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px; border-bottom: 1px solid var(--border);
}
.admin-tabs { display: flex; gap: 6px; }
.admin-tab {
  border: 1px solid var(--border); background: var(--bg-elevated);
  color: var(--text-muted); border-radius: 8px; padding: 7px 12px;
  cursor: pointer; font: inherit; font-size: 12px;
}
.admin-tab.active { background: var(--accent); color: #0b1406; font-weight: 700; border-color: var(--accent); }
.admin-body { flex: 1; display: flex; min-height: 0; }
.admin-list {
  width: 320px; border-right: 1px solid var(--border); overflow: auto; padding: 10px;
}
.admin-list-item {
  border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px;
  margin-bottom: 8px; cursor: pointer; background: var(--bg-panel);
}
.admin-list-item.active, .admin-list-item:hover { border-color: rgba(102,196,44,0.45); }
.admin-list-item small { display: block; color: var(--text-muted); margin-top: 4px; }
.admin-form { flex: 1; overflow: auto; padding: 18px; }
.admin-form label { display: block; margin: 10px 0 6px; color: var(--text-muted); font-size: 12px; }
.admin-form input, .admin-form textarea, .admin-form select {
  width: 100%; background: #0e0e16; border: 1px solid var(--border); color: var(--text);
  border-radius: 8px; padding: 10px 12px; font: inherit;
}
.admin-form textarea.tall { min-height: 160px; font-family: "IBM Plex Mono", monospace; }
.admin-actions { display: flex; gap: 8px; margin-top: 14px; }
.btn-primary, .btn-danger, .btn-secondary {
  border: none; border-radius: 8px; padding: 9px 14px; cursor: pointer; font: inherit; font-weight: 600;
}
.btn-primary { background: var(--accent); color: #0b1406; }
.btn-danger { background: var(--danger-soft); color: #ff9c9c; border: 1px solid rgba(229,83,83,0.35); }
.btn-secondary { background: var(--bg-elevated); color: var(--text); border: 1px solid var(--border); }
.admin-status { margin-top: 10px; color: var(--text-muted); }

/* ── Онбординг ── */
body.cookie-blocked #gate-screen,
body.cookie-blocked #app-shell {
  pointer-events: none;
  user-select: none;
  filter: blur(1px);
}

.tour-root {
  position: fixed;
  inset: 0;
  z-index: 12000;
  pointer-events: auto;
}
.tour-root[hidden] { display: none !important; }
.tour-spotlight {
  position: absolute;
  border-radius: 14px;
  box-shadow: 0 0 0 9999px rgba(4, 8, 14, 0.78);
  outline: 2px solid rgba(102, 196, 44, 0.85);
  outline-offset: 2px;
  transition: left 0.28s var(--ease), top 0.28s var(--ease), width 0.28s var(--ease), height 0.28s var(--ease);
  pointer-events: none;
  z-index: 1;
}
.tour-target {
  /* не поднимаем цель над туром — иначе карточка уходит под сайдбар */
  outline: none;
}
.tour-card {
  position: absolute;
  z-index: 3;
  width: min(340px, calc(100vw - 24px));
  background: linear-gradient(165deg, #1a2433 0%, #121a24 100%);
  border: 1px solid rgba(102, 196, 44, 0.35);
  border-radius: 16px;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
  padding: 16px 16px 14px;
  pointer-events: auto;
  display: flex;
  gap: 12px;
  align-items: flex-start;
  animation: tour-pop 0.28s var(--ease);
}
@keyframes tour-pop {
  from { opacity: 0; transform: translateY(8px) scale(0.98); }
  to { opacity: 1; transform: none; }
}
.tour-emoji {
  font-size: 28px;
  line-height: 1;
  flex: 0 0 auto;
  filter: drop-shadow(0 2px 6px rgba(0,0,0,0.35));
}
.tour-card-body { flex: 1; min-width: 0; }
.tour-step-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 4px;
}
.tour-card h2 {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
}
.tour-card p {
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.45;
  color: var(--text-muted);
}
.tour-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}
.tour-skip {
  border: none;
  background: transparent;
  color: var(--text-muted);
  font: inherit;
  font-size: 13px;
  cursor: pointer;
  padding: 8px 4px;
}
.tour-skip:hover { color: var(--text); }
.tour-next {
  border: none;
  background: var(--accent);
  color: var(--accent-on);
  font: inherit;
  font-size: 13px;
  font-weight: 700;
  border-radius: 10px;
  padding: 9px 16px;
  cursor: pointer;
  box-shadow: 0 4px 14px var(--accent-glow);
}
.tour-next:hover { filter: brightness(1.05); }

@media (max-width: 1100px) {
  .gate-main { grid-template-columns: 1fr; max-width: 520px; }
  .gate-points { display: none; }
  .app-shell:not(.sidebar-collapsed) .sidebar-backdrop { display: block; }
  .sidebar {
    position: absolute; left: 0; top: 0; bottom: 0;
    box-shadow: var(--shadow-soft);
  }
  .app-shell.sidebar-collapsed .sidebar { transform: translateX(-105%); }
  .lesson-panel { flex-basis: 42% !important; min-width: 200px; }
  .topbar-progress { display: none; }
}

@media (max-width: 820px) {
  .community-link.topbar-community { padding: 6px 10px; font-size: 12px; }
  .gate-top-right .gate-community { display: none; }
  .brand-name { display: none; }
  #user-display { max-width: 96px; }
  .user-hardcore-rank { display: none !important; }
  .btn-logout { padding: 6px 8px; font-size: 11px; }
  .student-split { flex-direction: column; }
  .lesson-panel {
    flex: 0 0 42% !important;
    min-width: 0; width: 100%;
    border-bottom: 1px solid var(--border);
  }
  .split-resizer {
    flex: 0 0 8px; cursor: row-resize; width: 100%;
  }
  .split-resizer::before { inset: 3px 20%; }
  .simulator-panel { min-height: 0; }
  .lesson-nav .nav-btn { padding: 7px 9px; font-size: 12px; }
  .course-switch { margin-right: auto; }
  .ai-fab {
    right: 16px;
    bottom: calc(16px + var(--site-footer-h));
    min-width: 0;
    padding: 12px 14px;
  }
  .ai-fab.active { right: 16px; }
  .ai-fab-hint { display: none; }
}

/* ── Переключатель тем ── */
.theme-picker { position: relative; }
.theme-picker-btn {
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text);
  border-radius: 8px;
  cursor: pointer;
  font-size: 17px;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}
.theme-picker-btn:hover,
.theme-picker-btn[aria-expanded="true"] {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}
.theme-picker-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 220px;
  padding: 8px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow-soft);
  z-index: 120;
}
.theme-picker-menu[hidden] { display: none !important; }
.theme-option {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 12px;
  border: 1px solid transparent;
  border-radius: 10px;
  background: transparent;
  color: var(--text);
  font: inherit;
  font-size: 13px;
  text-align: left;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}
.theme-option:hover { background: var(--surface-hover); }
.theme-option.active {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.theme-swatch {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  border: 1px solid var(--border);
  flex-shrink: 0;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.theme-swatch span { display: block; min-height: 100%; }
.theme-option-label { font-weight: 600; }
.theme-option-kind {
  display: block;
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 500;
}

[data-theme="sand-light"] .theme-picker-menu,
[data-theme="snow-light"] .theme-picker-menu {
  background: #faf7f2;
  border-color: #d4cfc5;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}
[data-theme="sand-light"] .theme-picker-menu .theme-option-label,
[data-theme="snow-light"] .theme-picker-menu .theme-option-label {
  color: #1a1a1a;
}
[data-theme="sand-light"] .theme-picker-menu .theme-option-kind,
[data-theme="snow-light"] .theme-picker-menu .theme-option-kind {
  color: #5a5a5a;
}
[data-theme="sand-light"] .theme-picker-menu .theme-option:hover,
[data-theme="snow-light"] .theme-picker-menu .theme-option:hover {
  background: rgba(0, 0, 0, 0.05);
}

[data-theme="forest-dark"] .theme-picker-menu,
[data-theme="ocean-dark"] .theme-picker-menu,
[data-theme="meme"] .theme-picker-menu {
  background: #141a22;
  border-color: #2a2a3e;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.45);
}
[data-theme="forest-dark"] .theme-picker-menu .theme-option-label,
[data-theme="ocean-dark"] .theme-picker-menu .theme-option-label,
[data-theme="meme"] .theme-picker-menu .theme-option-label {
  color: #e8f0f8;
}
[data-theme="forest-dark"] .theme-picker-menu .theme-option-kind,
[data-theme="ocean-dark"] .theme-picker-menu .theme-option-kind,
[data-theme="meme"] .theme-picker-menu .theme-option-kind {
  color: #9aa8b8;
}
[data-theme="forest-dark"] .theme-picker-menu .theme-option:hover,
[data-theme="ocean-dark"] .theme-picker-menu .theme-option:hover,
[data-theme="meme"] .theme-picker-menu .theme-option:hover {
  background: rgba(255, 255, 255, 0.06);
}

.hardcore-subnav {
  display: inline-flex;
  gap: 4px;
  margin-right: 8px;
}
.leaderboard-top-btn {
  padding: 6px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  font: inherit;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  margin-right: 6px;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.leaderboard-top-btn:hover {
  color: var(--text);
  border-color: var(--accent);
  background: var(--accent-soft);
}
.play-hardcore .leaderboard-top-btn:hover {
  color: #b8e07a;
  border-color: rgba(111, 170, 60, 0.45);
  background: rgba(111, 170, 60, 0.12);
}

.leaderboard-modal-card {
  position: relative;
  width: min(480px, 100%);
  max-height: min(80vh, 640px);
  display: flex;
  flex-direction: column;
  background: var(--modal-bg);
  border: 1px solid var(--modal-border);
  border-radius: 18px;
  box-shadow: var(--shadow-soft);
  padding: 24px 22px 18px;
  text-align: center;
  animation: tour-pop 0.28s var(--ease);
}
.leaderboard-modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--text-muted);
  font-size: 18px;
  cursor: pointer;
  line-height: 1;
}
.leaderboard-modal-close:hover {
  background: var(--surface-hover);
  color: var(--text);
}
.leaderboard-modal-card h2 {
  margin: 0 28px 8px 0;
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  text-align: left;
}
.leaderboard-modal-desc {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.45;
  color: var(--text-muted);
  text-align: left;
}
.leaderboard-modal-you {
  margin: 0 0 12px;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  text-align: left;
}
.play-hardcore .leaderboard-modal-you {
  color: #b8e07a;
}
.leaderboard-modal-list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  overflow-y: auto;
  flex: 1;
  min-height: 120px;
  max-height: 360px;
  border: 1px solid var(--border);
  border-radius: 10px;
  text-align: left;
}
.leaderboard-modal-list .lb-row {
  display: grid;
  grid-template-columns: 32px 1fr auto;
  gap: 8px;
  align-items: center;
  padding: 9px 12px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}
.leaderboard-modal-list .lb-row:last-child { border-bottom: none; }
.leaderboard-modal-list .lb-row.me {
  background: var(--accent-soft);
  font-weight: 600;
}
.leaderboard-modal-list .lb-rank { color: #c9a227; font-variant-numeric: tabular-nums; }
.leaderboard-modal-list .lb-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.leaderboard-modal-list .lb-points { font-weight: 700; color: var(--accent); font-variant-numeric: tabular-nums; }
.leaderboard-modal-list .muted {
  padding: 16px 12px;
  color: var(--text-muted);
  font-size: 13px;
}

.user-hardcore-rank {
  display: block;
  font-size: 10px;
  line-height: 1.2;
  color: var(--accent);
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.play-hardcore .user-hardcore-rank {
  color: #b8e07a;
}

.trial-count {
  margin-left: auto;
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 500;
}

.hardcore-trials-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 8px 6px 12px;
}

.hardcore-trial-btn {
  display: grid;
  grid-template-columns: auto auto 1fr auto;
  align-items: center;
  gap: 6px;
  width: 100%;
  text-align: left;
}

.hardcore-trial-btn .trial-title {
  font-weight: 600;
}

.hardcore-trial-btn .trial-meta,
.hardcore-trial-btn .trial-count {
  font-size: 11px;
  color: var(--text-muted);
  margin-left: 0;
  white-space: nowrap;
}

.leetcode-task-view .lesson-task,
.leetcode-task-view .leetcode-task {
  border-left: none;
  padding-left: 0;
  margin-left: 0;
}

.leetcode-task-view .hardcore-banner {
  margin-bottom: 12px;
}

.leetcode-task-view .lesson-task p {
  line-height: 1.55;
}

.page-step.hardcore-num-step {
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

/* ── Светлые темы: подсветка кода и финальная полировка ── */

[data-theme="sand-light"] .lesson-panel pre code.hljs,
[data-theme="sand-light"] .lesson-panel pre code {
  color: var(--hljs-text);
}
[data-theme="sand-light"] .hljs-keyword { color: #6b4f2a; }
[data-theme="sand-light"] .hljs-string { color: #2f6b3a; }
[data-theme="sand-light"] .hljs-number { color: #8b5a2b; }
[data-theme="sand-light"] .hljs-comment { color: #8a8278; }
[data-theme="sand-light"] .hljs-built_in,
[data-theme="sand-light"] .hljs-title { color: #3d6fa0; }

[data-theme="snow-light"] .lesson-panel pre code.hljs,
[data-theme="snow-light"] .lesson-panel pre code {
  color: var(--hljs-text);
}
[data-theme="snow-light"] .hljs-keyword { color: #1d4ed8; }
[data-theme="snow-light"] .hljs-string { color: #047857; }
[data-theme="snow-light"] .hljs-number { color: #7c3aed; }
[data-theme="snow-light"] .hljs-comment { color: #64748b; }
[data-theme="snow-light"] .hljs-built_in,
[data-theme="snow-light"] .hljs-title { color: #2563eb; }

[data-theme="sand-light"] .gate-points li,
[data-theme="snow-light"] .gate-points li {
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.65) inset;
}
[data-theme="sand-light"] .sidebar,
[data-theme="snow-light"] .sidebar {
  box-shadow: 1px 0 0 var(--border-soft);
}
[data-theme="sand-light"] .lesson-panel,
[data-theme="snow-light"] .lesson-panel {
  box-shadow: inset -1px 0 0 var(--border-soft);
}
[data-theme="sand-light"] .simulator-panel,
[data-theme="snow-light"] .simulator-panel {
  border-left: 1px solid var(--border);
}
[data-theme="sand-light"] .auth-tab.active,
[data-theme="snow-light"] .auth-tab.active {
  box-shadow: 0 1px 3px rgba(62, 48, 32, 0.08);
}
[data-theme="sand-light"] .auth-field input:focus,
[data-theme="snow-light"] .auth-field input:focus {
  border-color: color-mix(in srgb, var(--accent) 50%, transparent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
[data-theme="sand-light"] .engine-badge,
[data-theme="snow-light"] .engine-badge {
  color: var(--accent-text);
}
[data-theme="sand-light"] .run-btn,
[data-theme="snow-light"] .run-btn {
  box-shadow: 0 4px 14px var(--accent-glow);
}
[data-theme="sand-light"] .theme-picker-menu,
[data-theme="snow-light"] .theme-picker-menu {
  box-shadow: var(--shadow-card);
}

[data-theme="sand-light"] .ai-msg.bot pre code.hljs,
[data-theme="snow-light"] .ai-msg.bot pre code.hljs {
  color: var(--hljs-text);
}
[data-theme="sand-light"] .ai-msg.bot .hljs-keyword { color: #6b4f2a; }
[data-theme="sand-light"] .ai-msg.bot .hljs-string { color: #2f6b3a; }
[data-theme="sand-light"] .ai-msg.bot .hljs-number { color: #8b5a2b; }
[data-theme="sand-light"] .ai-msg.bot .hljs-comment { color: #8a8278; }
[data-theme="sand-light"] .ai-msg.bot .hljs-built_in,
[data-theme="sand-light"] .ai-msg.bot .hljs-title { color: #3d6fa0; }

[data-theme="snow-light"] .ai-msg.bot .hljs-keyword { color: #1d4ed8; }
[data-theme="snow-light"] .ai-msg.bot .hljs-string { color: #047857; }
[data-theme="snow-light"] .ai-msg.bot .hljs-number { color: #7c3aed; }
[data-theme="snow-light"] .ai-msg.bot .hljs-comment { color: #64748b; }
[data-theme="snow-light"] .ai-msg.bot .hljs-built_in,
[data-theme="snow-light"] .ai-msg.bot .hljs-title { color: #2563eb; }

/* ── EXPERIMENTAL: neon street (cyan + magenta на индиго) ── */
[data-theme="meme"] body {
  background-color: #050510;
  background-image:
    radial-gradient(ellipse 50% 40% at 12% 18%, rgba(0, 255, 255, 0.14), transparent 55%),
    radial-gradient(ellipse 45% 38% at 88% 22%, rgba(255, 0, 200, 0.16), transparent 52%),
    radial-gradient(ellipse 70% 50% at 50% 100%, rgba(176, 0, 255, 0.12), transparent 60%),
    linear-gradient(180deg, rgba(5, 5, 16, 0.72) 0%, rgba(5, 5, 16, 0.88) 55%, rgba(5, 5, 16, 0.94) 100%),
    url("/assets/cyberpunk-street.png");
  background-size: auto, auto, auto, auto, cover;
  background-position: center, center, center, center, center;
  background-attachment: fixed;
  background-repeat: no-repeat;
}

[data-theme="meme"] .brand-mark {
  background: transparent;
  color: var(--neon-cyan);
  border: 1.5px solid var(--neon-cyan);
  text-shadow: 0 0 10px rgba(0, 255, 255, 0.7);
  box-shadow:
    0 0 10px rgba(0, 255, 255, 0.55),
    0 0 22px rgba(255, 0, 200, 0.25),
    inset 0 0 8px rgba(0, 255, 255, 0.1);
}

[data-theme="meme"] .sidebar,
[data-theme="meme"] .topbar,
[data-theme="meme"] .lesson-panel,
[data-theme="meme"] .simulator-panel,
[data-theme="meme"] .ai-drawer,
[data-theme="meme"] .gate-card,
[data-theme="meme"] .milestone-card,
[data-theme="meme"] .leaderboard-modal-card {
  background: rgba(8, 8, 24, 0.62);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(0, 255, 255, 0.28);
  box-shadow:
    0 0 0 1px rgba(255, 0, 200, 0.1),
    0 0 24px rgba(0, 212, 255, 0.1),
    0 0 40px rgba(176, 0, 255, 0.08);
}

[data-theme="meme"] .course-chip.active,
[data-theme="meme"] .play-mode-chip.active,
[data-theme="meme"] .mode-tab.active,
[data-theme="meme"] .auth-tab.active {
  background: transparent !important;
  color: var(--neon-cyan) !important;
  border: 1px solid var(--neon-cyan);
  text-shadow: 0 0 8px rgba(0, 255, 255, 0.55);
  box-shadow:
    0 0 12px rgba(0, 255, 255, 0.45),
    0 0 20px rgba(255, 0, 200, 0.2),
    inset 0 0 12px rgba(0, 255, 255, 0.05);
}

[data-theme="meme"] .run-btn,
[data-theme="meme"] .primary-btn,
[data-theme="meme"] .auth-submit,
[data-theme="meme"] .milestone-dismiss {
  background: transparent !important;
  color: var(--neon-cyan) !important;
  border: 1.5px solid var(--neon-cyan) !important;
  text-shadow: 0 0 8px rgba(0, 255, 255, 0.45);
  box-shadow:
    0 0 14px rgba(0, 255, 255, 0.35),
    0 0 28px rgba(255, 0, 200, 0.15);
}

[data-theme="meme"] .run-btn:hover,
[data-theme="meme"] .primary-btn:hover,
[data-theme="meme"] .auth-submit:hover {
  background: rgba(0, 255, 255, 0.06) !important;
  box-shadow:
    0 0 22px rgba(0, 255, 255, 0.55),
    0 0 36px rgba(255, 0, 200, 0.28);
  color: #ffffff !important;
}

[data-theme="meme"] .course-progress-fill,
[data-theme="meme"] #top-progress-fill {
  background: transparent;
  border: 1px solid var(--neon-pink);
  box-shadow:
    0 0 10px rgba(255, 0, 200, 0.75),
    0 0 18px rgba(176, 0, 255, 0.35),
    inset 0 0 6px rgba(255, 0, 200, 0.35);
  min-height: 6px;
}

[data-theme="meme"] .topbar-progress-bar,
[data-theme="meme"] .course-progress-bar {
  background: transparent;
  border: 1px solid rgba(0, 255, 255, 0.28);
  box-shadow: inset 0 0 10px rgba(0, 255, 255, 0.06);
}

[data-theme="meme"] .ai-fab {
  background: transparent;
  border: 1.5px solid var(--neon-pink);
  box-shadow:
    0 0 16px rgba(255, 0, 200, 0.45),
    0 0 28px rgba(176, 0, 255, 0.2);
}

[data-theme="meme"] .ai-fab-avatar {
  border: 1.5px solid var(--neon-cyan);
  box-shadow: 0 0 14px rgba(0, 255, 255, 0.5);
}

[data-theme="meme"] .ai-msg-avatar {
  border: 1.5px solid var(--neon-pink);
  box-shadow: 0 0 14px rgba(255, 0, 200, 0.5);
}

[data-theme="meme"] .ai-msg.user,
[data-theme="meme"] .ai-msg.bot,
[data-theme="meme"] .ai-msg-with-avatar .ai-msg-body {
  background: transparent !important;
  border: 1px solid rgba(0, 255, 255, 0.35);
  box-shadow: 0 0 14px rgba(0, 255, 255, 0.1);
}

[data-theme="meme"] .ai-msg.user {
  border-color: rgba(255, 0, 200, 0.55);
  box-shadow: 0 0 14px rgba(255, 0, 200, 0.18);
}

[data-theme="meme"] .page-step,
[data-theme="meme"] .lesson-btn {
  background: transparent;
  border: 1px solid rgba(0, 255, 255, 0.22);
}

[data-theme="meme"] .page-step.active,
[data-theme="meme"] .lesson-btn.active {
  background: transparent !important;
  color: var(--neon-cyan);
  border-color: var(--neon-cyan);
  text-shadow: 0 0 8px rgba(0, 255, 255, 0.45);
  box-shadow:
    0 0 12px rgba(0, 255, 255, 0.4),
    0 0 20px rgba(255, 0, 200, 0.18);
}

[data-theme="meme"] .page-step.done,
[data-theme="meme"] .lesson-btn.done {
  border-color: rgba(125, 255, 249, 0.5);
}

[data-theme="meme"] .engine-badge,
[data-theme="meme"] .hardcore-mode-badge,
[data-theme="meme"] code:not(pre code) {
  background: transparent !important;
  border: 1px solid rgba(0, 255, 255, 0.4);
  color: var(--neon-yellow);
  box-shadow: 0 0 8px rgba(0, 255, 255, 0.15);
}

[data-theme="meme"] .auth-field input,
[data-theme="meme"] .CodeMirror,
[data-theme="meme"] .sql-data-scroll,
[data-theme="meme"] .lesson-panel pre {
  background: rgba(5, 5, 16, 0.55) !important;
  border: 1px solid rgba(0, 255, 255, 0.28);
  box-shadow: 0 0 14px rgba(0, 255, 255, 0.06);
}

[data-theme="meme"] .auth-field input:focus {
  border-color: var(--neon-pink);
  box-shadow: 0 0 16px rgba(255, 0, 200, 0.4);
  outline: none;
}

[data-theme="meme"] .site-footer {
  background: transparent;
  border-top: 1px solid rgba(0, 255, 255, 0.28);
  box-shadow: 0 -4px 24px rgba(176, 0, 255, 0.08);
}

[data-theme="meme"] .sql-data-tables,
[data-theme="meme"] .lc-example,
[data-theme="meme"] .lesson-theory,
[data-theme="meme"] .lesson-task,
[data-theme="meme"] .lesson-panel .lesson-callout {
  background: rgba(8, 8, 24, 0.35);
  border: 1px solid rgba(0, 255, 255, 0.22);
  box-shadow: 0 0 16px rgba(0, 255, 255, 0.06);
  border-radius: 4px;
  padding: 18px 20px;
  box-sizing: border-box;
}

[data-theme="meme"] .leetcode-task-view .lesson-task,
[data-theme="meme"] .leetcode-task-view .leetcode-task {
  padding: 18px 20px !important;
  margin-left: 0;
}

[data-theme="meme"] .lesson-theory > :first-child,
[data-theme="meme"] .lesson-task > :first-child,
[data-theme="meme"] .sql-data-tables > :first-child,
[data-theme="meme"] .lc-example > :first-child {
  margin-top: 0;
}

[data-theme="meme"] .lesson-theory > :last-child,
[data-theme="meme"] .lesson-task > :last-child,
[data-theme="meme"] .sql-data-tables > :last-child,
[data-theme="meme"] .lc-example > :last-child {
  margin-bottom: 0;
}

/* EXPERIMENTAL: киберпанк-типографика */
[data-theme="meme"],
[data-theme="meme"] body {
  font-family: "Exo 2", "IBM Plex Sans", sans-serif;
  letter-spacing: 0.01em;
}

[data-theme="meme"] .brand-mark,
[data-theme="meme"] .theme-option-label,
[data-theme="meme"] .engine-badge,
[data-theme="meme"] .hardcore-mode-badge,
[data-theme="meme"] .course-chip,
[data-theme="meme"] .play-mode-chip,
[data-theme="meme"] .mode-tab,
[data-theme="meme"] .auth-tab,
[data-theme="meme"] .run-btn,
[data-theme="meme"] .primary-btn,
[data-theme="meme"] .auth-submit,
[data-theme="meme"] .milestone-dismiss,
[data-theme="meme"] .next-task-cta,
[data-theme="meme"] .lc-example-title,
[data-theme="meme"] .ai-fab-label {
  font-family: "Orbitron", "Exo 2", sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

[data-theme="meme"] .lesson-panel h1,
[data-theme="meme"] .gate-brand span,
[data-theme="meme"] .brand-name {
  font-family: "Orbitron", "Exo 2", sans-serif;
  letter-spacing: 0.04em;
  text-shadow: 0 0 12px rgba(0, 255, 255, 0.35);
}

[data-theme="meme"] .lesson-panel h2,
[data-theme="meme"] .module-btn,
[data-theme="meme"] .sql-data-tables > h2,
[data-theme="meme"] .sql-data-block h3 {
  font-family: "Exo 2", sans-serif;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 600;
}

[data-theme="meme"] .lesson-panel,
[data-theme="meme"] .ai-msg,
[data-theme="meme"] .gate-card,
[data-theme="meme"] .auth-field label {
  font-family: "Exo 2", "IBM Plex Sans", sans-serif;
}

[data-theme="meme"] .CodeMirror,
[data-theme="meme"] code,
[data-theme="meme"] pre,
[data-theme="meme"] .console-out,
[data-theme="meme"] kbd {
  font-family: "JetBrains Mono", "IBM Plex Mono", monospace !important;
  letter-spacing: 0;
}

[data-theme="meme"] .page-step,
[data-theme="meme"] .lesson-btn,
[data-theme="meme"] .user-chip,
[data-theme="meme"] .theme-picker-btn,
[data-theme="meme"] .leaderboard-top-btn {
  font-family: "Exo 2", sans-serif;
  letter-spacing: 0.04em;
}

[data-theme="meme"] .user-chip,
[data-theme="meme"] .leaderboard-top-btn,
[data-theme="meme"] .theme-picker-btn {
  background: transparent;
  border: 1px solid rgba(0, 255, 255, 0.35);
  box-shadow:
    0 0 10px rgba(0, 255, 255, 0.12),
    0 0 18px rgba(255, 0, 200, 0.08);
}

[data-theme="meme"] .course-switch,
[data-theme="meme"] .play-mode-switch {
  background: transparent;
  border: 1px solid rgba(0, 255, 255, 0.3);
  box-shadow: 0 0 12px rgba(0, 255, 255, 0.08);
}

[data-theme="meme"] .theme-picker-menu {
  background: rgba(10, 11, 30, 0.94) !important;
  border-color: rgba(0, 255, 255, 0.4) !important;
  box-shadow:
    0 0 0 1px rgba(255, 0, 200, 0.15),
    0 12px 32px rgba(0, 0, 0, 0.55),
    0 0 28px rgba(0, 255, 255, 0.12) !important;
}

.meme-popup {
  position: fixed;
  inset: 0;
  z-index: 130;
  display: grid;
  place-items: center;
  padding: 24px;
  background: var(--overlay-bg);
  animation: meme-fade-in 0.25s ease;
}
.meme-popup[hidden] {
  display: none !important;
}
.meme-popup-img {
  display: block;
  max-width: min(520px, 92vw);
  max-height: min(72vh, 640px);
  width: auto;
  height: auto;
  border-radius: 4px;
  background: transparent;
  border: 2px solid var(--neon-cyan);
  box-shadow:
    0 0 0 1px rgba(255, 43, 214, 0.45),
    0 0 28px rgba(0, 240, 255, 0.35),
    0 0 48px rgba(255, 43, 214, 0.2);
  object-fit: contain;
}
.meme-popup-close {
  position: absolute;
  top: max(16px, env(safe-area-inset-top, 16px));
  right: max(16px, env(safe-area-inset-right, 16px));
  z-index: 2;
  width: 28px;
  height: 28px;
  border: 1.5px solid var(--neon-pink);
  border-radius: 50%;
  background: transparent;
  color: var(--neon-pink);
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 0 12px rgba(255, 43, 214, 0.45);
}
.meme-popup-close:hover {
  background: rgba(255, 43, 214, 0.1);
  box-shadow: 0 0 18px rgba(255, 43, 214, 0.65);
}

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

/* ── Хардкор: орочий стиль Оргриммара ── */
[data-theme="hardcore"] body,
.play-hardcore body {
  background:
    radial-gradient(ellipse 70% 40% at 12% 0%, rgba(111, 170, 60, 0.1), transparent 55%),
    radial-gradient(ellipse 50% 35% at 88% 6%, rgba(196, 62, 28, 0.1), transparent 50%),
    linear-gradient(180deg, #120a04 0%, #0e0804 100%);
}

[data-theme="hardcore"] .brand-mark,
.play-hardcore .brand-mark {
  background: linear-gradient(145deg, #6faa3c, #8b6914);
  box-shadow: 0 0 0 1px rgba(201, 162, 39, 0.35), 0 6px 16px rgba(111, 170, 60, 0.2);
  border-radius: 6px;
}

[data-theme="hardcore"] .topbar,
[data-theme="hardcore"] .sidebar,
[data-theme="hardcore"] .lesson-panel,
[data-theme="hardcore"] .simulator-panel,
.play-hardcore .topbar,
.play-hardcore .sidebar,
.play-hardcore .lesson-panel,
.play-hardcore .simulator-panel {
  border-color: var(--border);
  box-shadow: inset 0 1px 0 rgba(201, 162, 39, 0.08);
}

[data-theme="hardcore"] .run-btn,
.play-hardcore .run-btn {
  background: linear-gradient(180deg, #7cb342, #5f9634);
  border: 1px solid #8b6914;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.12);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 800;
}

[data-theme="hardcore"] .course-progress-fill,
[data-theme="hardcore"] #top-progress-fill,
.play-hardcore .course-progress-fill,
.play-hardcore #top-progress-fill {
  background: linear-gradient(90deg, #5f9634, #8b6914);
}

[data-theme="hardcore"] .play-mode-chip[data-play-mode="hardcore"].active,
.play-hardcore .play-mode-chip[data-play-mode="hardcore"].active {
  background: rgba(111, 170, 60, 0.2);
  color: #b8e07a;
  box-shadow: inset 0 0 0 1px rgba(111, 170, 60, 0.45);
}

.play-hardcore .ai-fab,
.play-hardcore .ai-drawer {
  display: none !important;
}

.hardcore-leaderboard-panel {
  margin: 12px 10px 0;
  padding: 10px 12px;
  border: 1px solid rgba(201, 162, 39, 0.28);
  border-radius: 8px;
  background: linear-gradient(165deg, rgba(36, 22, 12, 0.92), rgba(22, 13, 6, 0.88));
  box-shadow: inset 0 1px 0 rgba(201, 162, 39, 0.1);
}

.hardcore-leaderboard-panel .lb-head {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 8px;
}

.hardcore-leaderboard-panel .lb-title {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #b8e07a;
}

.hardcore-leaderboard-panel .lb-you {
  font-size: 11px;
  color: var(--text-muted);
}

.hardcore-leaderboard-panel .lb-list {
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: 220px;
  overflow-y: auto;
}

.hardcore-leaderboard-panel .lb-row {
  display: grid;
  grid-template-columns: 28px 1fr auto;
  gap: 6px;
  align-items: center;
  padding: 5px 0;
  border-bottom: 1px solid rgba(201, 162, 39, 0.1);
  font-size: 12px;
}

.hardcore-leaderboard-panel .lb-row:last-child {
  border-bottom: none;
}

.hardcore-leaderboard-panel .lb-row.me {
  color: #d4f0a8;
  font-weight: 600;
}

.hardcore-leaderboard-panel .lb-rank {
  font-variant-numeric: tabular-nums;
  color: #c9a227;
}

.hardcore-leaderboard-panel .lb-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.hardcore-leaderboard-panel .lb-points {
  font-weight: 700;
  color: #8fbf6a;
  font-variant-numeric: tabular-nums;
}

.hardcore-leaderboard-panel .muted {
  font-size: 12px;
  color: var(--text-muted);
  padding: 4px 0;
}

.hardcore-reset-card {
  border-color: rgba(196, 62, 28, 0.5) !important;
  background: linear-gradient(165deg, #2c1a10, #1a1008) !important;
}

.hardcore-banner {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
  padding: 10px 12px;
  border: 1px solid rgba(196, 62, 28, 0.45);
  border-radius: 8px;
  background: linear-gradient(90deg, rgba(44, 26, 16, 0.95), rgba(26, 16, 8, 0.9));
  color: #f5ead2;
  font-size: 13px;
  line-height: 1.35;
  box-shadow: inset 0 1px 0 rgba(201, 162, 39, 0.12);
}

.hardcore-skull {
  font-size: 18px;
  filter: drop-shadow(0 0 4px rgba(196, 62, 28, 0.5));
}

.hardcore-task,
.hardcore-theory,
.hardcore-lesson-view {
  --hc-accent: #b8e07a;
  --hc-danger: #c43e1c;
}

.lesson-task.hardcore-task,
.hardcore-lesson-view .lesson-task {
  border-left: 3px solid rgba(196, 62, 28, 0.65);
  padding-left: 12px;
  margin-left: -4px;
}

.warcraft-task .wc-problem-meta {
  display: inline-block;
  margin-bottom: 10px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: #e8c9a0;
  background: rgba(196, 62, 28, 0.18);
  border: 1px solid rgba(196, 62, 28, 0.35);
}

.warcraft-task p strong {
  color: #f0d9b5;
}

.lc-ref {
  margin: 0 0 8px;
  font-size: 12px;
  color: #c9a66b;
  letter-spacing: 0.02em;
}

.lc-example {
  margin: 14px 0;
  padding: 12px 14px;
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.22);
  border: 1px solid rgba(196, 62, 28, 0.28);
}

.lc-example-secondary {
  opacity: 0.92;
  border-style: dashed;
}

.lc-example-title {
  margin: 0 0 8px;
  font-weight: 600;
  color: #e8c9a0;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.lc-example p {
  margin: 6px 0;
  font-size: 14px;
  line-height: 1.45;
}

.lc-example-hint,
.lc-format-hint {
  margin-top: 10px;
  font-size: 13px;
  color: #b8a88a;
}

.lc-example pre {
  margin: 8px 0 0;
  font-size: 12px;
}

.hardcore-note {
  margin: 10px 0 0;
  padding: 8px 10px;
  border-radius: 6px;
  background: rgba(196, 62, 28, 0.12);
  border: 1px solid rgba(196, 62, 28, 0.28);
  color: #e8c9a0;
  font-size: 13px;
}

.lesson-skull {
  margin-right: 6px;
  color: #c43e1c;
  text-shadow: 0 0 6px rgba(196, 62, 28, 0.45);
}

.page-step.hardcore-skull-step {
  font-size: 13px;
  letter-spacing: -1px;
}

.play-hardcore .lesson-btn.done .done-mark {
  color: #b8e07a;
}

.play-hardcore .page-step.done.hardcore-skull-step {
  box-shadow: inset 0 0 0 1px rgba(184, 224, 122, 0.45);
}

@media (max-width: 820px) {
  .play-mode-switch { display: none; }
  .hardcore-mode-badge:not([hidden]) { display: inline-flex; }
}