:root{color-scheme:light dark;--bg: #f5f6f8;--card: #fff;--text: #1a1a1a;--muted: #666;--border: #e2e4e8;--accent: #1a1a1a}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text)}.loading{display:flex;align-items:center;justify-content:center;min-height:100vh;color:var(--muted)}.dashboard{max-width:900px;margin:0 auto;padding:1.5rem}.dashboard header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.5rem}.dashboard header span{color:var(--muted);font-size:.9rem}.dashboard header button{background:none;border:1px solid var(--border);border-radius:6px;padding:.4rem .8rem;cursor:pointer;font-size:.85rem}nav{display:flex;gap:.5rem;margin-bottom:1.5rem;flex-wrap:wrap}nav button{background:var(--card);border:1px solid var(--border);border-radius:6px;padding:.5rem 1rem;cursor:pointer;font-size:.9rem}nav button.active{background:var(--accent);color:#fff;border-color:var(--accent)}main h2{font-size:1.1rem;margin:0 0 1rem}main h3{font-size:.95rem;margin:1.5rem 0 .75rem}main .hint{color:var(--muted);font-size:.85rem;margin:0 0 .75rem}table{width:100%;border-collapse:collapse;background:var(--card);border-radius:8px;overflow:hidden}th,td{text-align:left;padding:.6rem .8rem;border-bottom:1px solid var(--border);font-size:.88rem}th{color:var(--muted);font-weight:500;font-size:.8rem;text-transform:uppercase;letter-spacing:.03em}td button{background:none;border:1px solid var(--border);border-radius:6px;padding:.3rem .6rem;cursor:pointer;font-size:.8rem}form{display:flex;gap:.5rem;flex-wrap:wrap;align-items:center}form input,form select{padding:.5rem .7rem;border:1px solid var(--border);border-radius:6px;font-size:.88rem}form input{flex:1;min-width:160px}form button{border:none;border-radius:6px;background:var(--accent);color:#fff;padding:.55rem 1.1rem;cursor:pointer;font-size:.88rem}.error{color:#c0392b;font-size:.85rem;margin-top:.5rem}