* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: #f5f5f5; color: #333; }
nav { background: #1a1a2e; padding: 12px 24px; display: flex; gap: 16px; }
nav a { color: #aaa; text-decoration: none; padding: 6px 12px; border-radius: 4px; }
nav a:hover { color: #fff; }
nav a.active { color: #fff; background: #16213e; }
main { max-width: 1200px; margin: 24px auto; padding: 0 24px; }
h1 { margin-bottom: 20px; }
h2 { margin: 20px 0 12px; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 16px; margin-bottom: 24px; }
.card { background: #fff; border-radius: 8px; padding: 20px; text-align: center; box-shadow: 0 1px 3px rgba(0,0,0,.1); }
.card span { display: block; font-size: 2em; font-weight: bold; margin-bottom: 4px; }
.card.green span { color: #2ecc71; }
.card.yellow span { color: #f39c12; }
.card.red span { color: #e74c3c; }
.card.blue span { color: #3498db; }

table { width: 100%; border-collapse: collapse; background: #fff; border-radius: 8px; overflow: hidden; box-shadow: 0 1px 3px rgba(0,0,0,.1); }
th, td { padding: 10px 14px; text-align: left; border-bottom: 1px solid #eee; }
th { background: #f8f9fa; font-weight: 600; }
code { background: #f0f0f0; padding: 2px 6px; border-radius: 3px; font-size: 0.85em; }

button { padding: 6px 14px; border: none; border-radius: 4px; background: #3498db; color: #fff; cursor: pointer; }
button:hover { background: #2980b9; }
button.danger { background: #e74c3c; }
button.danger:hover { background: #c0392b; }

.badge { display: inline-block; padding: 2px 8px; border-radius: 10px; font-size: 0.8em; font-weight: 600; }
.badge.active { background: #d4edda; color: #155724; }
.badge.expired { background: #fff3cd; color: #856404; }
.badge.disabled { background: #f8d7da; color: #721c24; }

.actions { margin-bottom: 16px; display: flex; gap: 8px; }
.actions input { padding: 6px 12px; border: 1px solid #ddd; border-radius: 4px; }
.alert { background: #d4edda; border: 1px solid #c3e6cb; padding: 12px; border-radius: 4px; margin-bottom: 16px; word-break: break-all; }

.playground { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.request-panel, .response-panel { background: #fff; padding: 16px; border-radius: 8px; box-shadow: 0 1px 3px rgba(0,0,0,.1); }
.row { display: flex; gap: 8px; margin-bottom: 8px; }
.row select { padding: 6px; border: 1px solid #ddd; border-radius: 4px; }
.row input { flex: 1; padding: 6px 12px; border: 1px solid #ddd; border-radius: 4px; }
textarea { width: 100%; padding: 10px; border: 1px solid #ddd; border-radius: 4px; font-family: monospace; resize: vertical; }
#resp-status { margin-bottom: 8px; }
#resp-body { background: #f8f9fa; padding: 12px; border-radius: 4px; overflow: auto; max-height: 400px; font-size: 0.85em; white-space: pre-wrap; }

@media (max-width: 768px) {
  .playground { grid-template-columns: 1fr; }
  .cards { grid-template-columns: repeat(2, 1fr); }
}