:root{--bg:#0f1115;--bg-secondary:#171a21;--surface:#1d212b;--surface-hover:#252a36;--primary:#5b8cff;--primary-hover:#4a7bee;--text:#f5f7fa;--text-muted:#9ca3af;--border:#2a3040;--success:#22c55e;--warning:#f59e0b;--error:#ef4444;--shadow-sm:0 2px 10px #0003;--shadow-md:0 8px 30px #00000059;--radius-sm:8px;--radius-md:14px;--radius-lg:20px}:root[data-theme=light]{--bg:#f5f7fb;--bg-secondary:#fff;--surface:#fff;--surface-hover:#f3f5f9;--primary:#4f7cff;--primary-hover:#3f6ef0;--text:#111827;--text-muted:#6b7280;--border:#e5e7eb;--success:#16a34a;--warning:#d97706;--error:#dc2626;--shadow-sm:0 2px 10px #0f172a0f;--shadow-md:0 8px 30px #0f172a1f;--radius-sm:8px;--radius-md:14px;--radius-lg:20px}*{box-sizing:border-box;margin:0;padding:0}html,body{background-color:var(--bg);width:100%;height:100%;color:var(--text);position:absolute}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}