:root{--bg: #f4f6fb;--surface: #ffffff;--border: #e6e9f0;--active: #eaf0ff;--text: #1a2233;--muted: #6b7488;--primary: #2563eb;--primary-d: #1d4ed8;--accent: #7c3aed;--ok: #10b981;--warn: #f59e0b;--danger: #ef4444;--radius: 14px;--shadow: 0 1px 3px rgba(20, 30, 60, .06), 0 8px 24px rgba(20, 30, 60, .05)}[data-theme=dark]{--bg: #0f1422;--surface: #161c2d;--border: #273046;--active: #1e2a4a;--text: #e8ecf5;--muted: #8b94ab;--primary: #5b8cff;--primary-d: #3f74f0;--accent: #a78bfa;--shadow: 0 1px 3px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .35)}*{box-sizing:border-box}html,body{height:100%}body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;transition:background .2s ease,color .2s ease}a{color:inherit;text-decoration:none}button{font-family:inherit;cursor:pointer}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.btn{border:none;border-radius:10px;padding:10px 16px;font-weight:600;background:var(--primary);color:#fff;transition:background .15s ease}.btn:hover{background:var(--primary-d)}.btn:disabled{opacity:.6;cursor:not-allowed}.muted{color:var(--muted)}