:root{--bg: #0a0a0f;--bg-surface: #0f0f16;--bg-card: #141420;--bg-hover: #1a1a28;--bg-raised: #0f0f16;--border: #1c1c2a;--border-mid: #262636;--border-focus: #16c784;--text: #eeeeee;--text-secondary: #888899;--text-muted: #7a7a8e;--accent: #16c784;--accent-hover: #1de090;--accent-dim: rgba(22, 199, 132, .1);--accent-dim-hover:rgba(22, 199, 132, .17);--correct: #16c784;--correct-dim: rgba(22, 199, 132, .1);--wrong: #ff5757;--wrong-dim: rgba(255, 87, 87, .1);--warning: #f0a500;--warning-dim: rgba(240, 165, 0, .1);--t1: #5b8dee;--t2: #16c784;--t3: #fb923c;--t4: #a78bfa;--t5: #f275a5;--radius: 10px;--radius-sm: 7px;--radius-lg: 16px;--font: "DM Sans", system-ui, -apple-system, sans-serif;--font-mono: "JetBrains Mono", monospace;--shadow-sm: 0 1px 4px rgba(0,0,0,.6);--shadow: 0 4px 20px rgba(0,0,0,.7);--shadow-lg: 0 16px 60px rgba(0,0,0,.8)}[data-theme=light]{--bg: #f4f4f8;--bg-surface: #ffffff;--bg-card: #ffffff;--bg-hover: #ebebf2;--bg-raised: #ffffff;--border: #e2e2ea;--border-mid: 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768px){.sidebar{transform:translate(-100%);width:260px}.sidebar.open{transform:translate(0);box-shadow:4px 0 40px #000c}.main-content{margin-left:0}.sidebar-overlay{display:block}}::-webkit-scrollbar{width:5px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-mid);border-radius:3px}::selection{background:var(--accent-dim);color:var(--accent)}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}button,select{font-family:var(--font)}button:active:not(:disabled){transform:scale(.97)}@keyframes fadeIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.6}}@keyframes spin{to{transform:rotate(360deg)}}.fade-in{animation:fadeIn .25s ease-out}.slide-up{animation:slideUp .35s ease-out}.mc-option{display:flex;gap:12px;align-items:flex-start;width:100%;padding:14px 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