* { box-sizing: border-box; }
body { font-family: -apple-system, Segoe UI, Roboto, sans-serif; margin: 0; background: #f5f6f8; color: #1a1a1a; }
.topnav { background: #1F2937; padding: 12px 24px; }
.topnav a, .topnav button { color: #fff; text-decoration: none; margin-right: 16px; background: none; border: none; cursor: pointer; font-size: 14px; }
.container { max-width: 960px; margin: 24px auto; background: #fff; padding: 24px; border-radius: 8px; box-shadow: 0 1px 3px rgba(0,0,0,.1); }
.btn, button[type="submit"] { display: inline-block; background: #2563EB; color: #fff; padding: 8px 16px; border: none; border-radius: 6px; cursor: pointer; text-decoration: none; margin-bottom: 12px; }
.data-table { width: 100%; border-collapse: collapse; margin-top: 12px; }
.data-table th, .data-table td { text-align: left; padding: 8px; border-bottom: 1px solid #eee; }
.swatch { display: inline-block; width: 16px; height: 16px; border-radius: 3px; margin-right: 4px; vertical-align: middle; }
form label { display: block; margin-top: 12px; font-weight: 600; font-size: 13px; }
form input, form textarea { width: 100%; padding: 8px; margin-top: 4px; border: 1px solid #ccc; border-radius: 4px; }
.error { color: #b91c1c; background: #fee2e2; padding: 8px 12px; border-radius: 6px; }
.badge { padding: 2px 8px; border-radius: 12px; font-size: 12px; background: #e5e7eb; }
.auth-page { display: flex; align-items: center; justify-content: center; height: 100vh; background: #1F2937; }
.auth-form { background: #fff; padding: 32px; border-radius: 8px; width: 320px; }
.quick-links { display: flex; gap: 12px; margin-top: 16px; }