:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --bg: #f8fafc;
  --panel: #ffffff;
  --border: #e2e8f0;
  --text: #0f172a;
  --muted: #64748b;
  --success: #16a34a;
  --error: #dc2626;
  --warn: #b45309;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}

header {
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

header h1 { font-size: 18px; margin: 0; }
header p { margin: 2px 0 0; color: var(--muted); font-size: 13px; }

.layout { display: flex; min-height: calc(100vh - 65px); }

nav.tabs {
  width: 190px;
  border-right: 1px solid var(--border);
  background: var(--panel);
  padding: 12px 0;
  flex-shrink: 0;
}

nav.tabs button {
  display: block;
  width: 100%;
  text-align: left;
  padding: 10px 20px;
  background: none;
  border: none;
  font-size: 14px;
  color: var(--text);
  cursor: pointer;
}

nav.tabs button.active {
  background: #eff6ff;
  color: var(--primary);
  font-weight: 600;
  border-right: 3px solid var(--primary);
}

main { flex: 1; padding: 24px; max-width: 1000px; }

.tab-panel { display: none; }
.tab-panel.active { display: block; }

textarea, select, input[type=text], input[type=password] {
  width: 100%;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  font-family: inherit;
}

textarea { min-height: 90px; resize: vertical; }

label { display: block; font-size: 13px; font-weight: 600; margin: 12px 0 4px; }

button.primary {
  background: var(--primary);
  color: white;
  border: none;
  padding: 10px 18px;
  border-radius: 6px;
  font-size: 14px;
  cursor: pointer;
  font-weight: 600;
}
button.primary:hover { background: var(--primary-dark); }
button.primary:disabled { background: #94a3b8; cursor: not-allowed; }

button.secondary {
  background: white;
  color: var(--text);
  border: 1px solid var(--border);
  padding: 8px 14px;
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
}
button.secondary:hover { background: #f1f5f9; }
button.secondary.selected {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 18px;
  margin-bottom: 16px;
}

.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }

pre {
  background: #0f172a;
  color: #e2e8f0;
  padding: 14px;
  border-radius: 6px;
  overflow-x: auto;
  font-size: 12.5px;
  max-height: 420px;
}

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.badge.success { background: #dcfce7; color: var(--success); }
.badge.error { background: #fee2e2; color: var(--error); }
.badge.warn { background: #fef3c7; color: var(--warn); }
.badge.info { background: #dbeafe; color: var(--primary); }

.log-line { font-size: 13px; color: var(--muted); padding: 2px 0; }
.log-line.latest { color: var(--text); font-weight: 600; }

.muted { color: var(--muted); font-size: 13px; }

iframe.preview-frame {
  width: 100%;
  height: 560px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: white;
}

table.agent-table { width: 100%; border-collapse: collapse; font-size: 13px; }
table.agent-table th, table.agent-table td {
  border: 1px solid var(--border);
  padding: 8px 10px;
  text-align: left;
}
table.agent-table th { background: #f1f5f9; }

.spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  vertical-align: middle;
  margin-right: 6px;
}
@keyframes spin { to { transform: rotate(360deg); } }

.hidden { display: none !important; }