body { font-family: Arial, sans-serif; margin: 0; background: #f5f7fa; }
.topnav { background: #1f2937; color: #fff; padding: 10px; display: flex; gap: 12px; align-items: center; }
.topnav a { color: #fff; text-decoration: none; }
.container { padding: 20px; }
.card { background: #fff; border: 1px solid #d1d5db; border-radius: 6px; padding: 12px; margin-bottom: 12px; }
.alert { padding: 10px; border-radius: 4px; margin-bottom: 10px; }
.alert.success { background: #dcfce7; color: #166534; }
.alert.error { background: #fee2e2; color: #991b1b; }
table { width: 100%; border-collapse: collapse; background: #fff; }
th, td { border: 1px solid #e5e7eb; padding: 8px; text-align: left; vertical-align: top; }
input, select, textarea, button { padding: 6px; margin: 4px 0; }
textarea { width: 100%; min-height: 72px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.grid-4 { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; margin-bottom: 12px; }
.inline-form { display: inline-flex; gap: 6px; align-items: center; }
.badge { padding: 4px 8px; border-radius: 10px; display: inline-block; }
.badge.ok { background: #dcfce7; }
.badge.danger { background: #fee2e2; }
pre { background: #111827; color: #f9fafb; padding: 8px; overflow: auto; }