:root{--bg: #f5f6f8;--bg-elevated: #ffffff;--text: #1a1d21;--text-muted: #5f6672;--border: #dfe3e8;--accent: #2563eb;--accent-contrast: #ffffff;--success: #16a34a;--warning: #d97706;--danger: #dc2626;--info: #64748b;color-scheme:light}:root[data-theme=dark]{--bg: #14161a;--bg-elevated: #1e2126;--text: #e8eaed;--text-muted: #9aa1ab;--border: #30343b;--accent: #4f8cff;--accent-contrast: #0b1020;--success: #4ade80;--warning: #fbbf24;--danger: #f87171;--info: #94a3b8;color-scheme:dark}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text)}a{color:var(--accent)}button{font-family:inherit;cursor:pointer}input,select,textarea{font-family:inherit;background:var(--bg-elevated);color:var(--text);border:1px solid var(--border);border-radius:6px;padding:6px 8px}.card{background:var(--bg-elevated);border:1px solid var(--border);border-radius:10px;padding:16px}.btn{background:var(--accent);color:var(--accent-contrast);border:none;border-radius:6px;padding:8px 14px;font-weight:600}.btn.secondary{background:transparent;color:var(--text);border:1px solid var(--border)}.btn.danger{background:var(--danger)}