:root{color-scheme:light dark;font-family:system-ui,-apple-system,sans-serif}body{margin:0;background:#f6f7f9;color:#1a1a1a}.container{max-width:960px;margin:0 auto;padding:2rem 1.5rem}header{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #ddd;padding-bottom:1rem;margin-bottom:1.5rem}button,.btn{background:#2563eb;color:#fff;border:none;padding:.5rem 1rem;border-radius:6px;cursor:pointer;font-size:.9rem;text-decoration:none;display:inline-block}button.secondary{background:#e5e7eb;color:#111}button.danger{background:#dc2626}table{width:100%;border-collapse:collapse;margin-top:1rem;background:#fff}th,td{text-align:left;padding:.5rem .75rem;border-bottom:1px solid #eee;font-size:.9rem}nav.tabs{display:flex;gap:.5rem;margin-bottom:1rem}nav.tabs button{background:#e5e7eb;color:#111}nav.tabs button.active{background:#2563eb;color:#fff}.card{background:#fff;border-radius:8px;padding:1.5rem;box-shadow:0 1px 3px #00000014}input[type=text]{padding:.4rem .6rem;border:1px solid #ccc;border-radius:4px;font-size:.9rem;width:100%;box-sizing:border-box}