:root {
  color-scheme: light dark;
  --bg: #0f1419;
  --surface: #1a2332;
  --border: #2d3a4d;
  --text: #e7ecf3;
  --muted: #8b9cb3;
  --accent: #5b9fd4;
  --error-bg: #3a1f24;
  --error-border: #8b3a44;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f4f6f9;
    --surface: #ffffff;
    --border: #d0d7e2;
    --text: #1a1f2e;
    --muted: #5c6578;
    --accent: #1a6cb3;
    --error-bg: #fde8ea;
    --error-border: #e0858f;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.page-header {
  padding: 1.5rem 1.5rem 0.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.page-header h1 {
  margin: 0 0 0.25rem;
  font-size: 1.5rem;
  font-weight: 600;
}

.main-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.nav-link {
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
  padding: 0.35rem 0;
  border-bottom: 2px solid transparent;
}

.nav-link:hover {
  color: var(--accent);
}

.nav-link--active {
  color: var(--text);
  border-bottom-color: var(--accent);
}

.muted {
  color: var(--muted);
  margin: 0;
  font-size: 0.9rem;
}

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 1.5rem 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem 1.5rem;
}

.card h2 {
  margin: 0 0 0.75rem;
  font-size: 1.1rem;
  font-weight: 600;
}

.placeholder {
  margin: 0;
  color: var(--muted);
  font-style: italic;
}

.summary {
  margin: 0 0 1rem;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.data-table th,
.data-table td {
  padding: 0.6rem 0.75rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--border);
}

.data-table th {
  font-weight: 600;
  color: var(--muted);
  white-space: nowrap;
}

.data-table tr:last-child td {
  border-bottom: none;
}

.mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.8rem;
}

.wrap {
  word-break: break-all;
  max-width: 220px;
}

/* User sessions table: give user_id more room than generic .wrap */
.session-user-id {
  min-width: 18rem;
  max-width: 28rem;
  word-break: break-word;
}

.payload pre {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  max-width: 420px;
  max-height: 8rem;
  overflow: auto;
  font-size: 0.75rem;
}

.empty {
  text-align: center;
  color: var(--muted);
  padding: 1.5rem;
}

.alert {
  padding: 0.85rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--error-border);
  background: var(--error-bg);
  margin-bottom: 1rem;
}

.alert-pre {
  margin: 0.5rem 0 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 0.8rem;
}

.pagination {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 1.25rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 0.45rem 1rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  text-decoration: none;
  font-size: 0.9rem;
}

.btn:hover:not(.disabled) {
  border-color: var(--accent);
  color: var(--accent);
}

.btn.disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn--small {
  padding: 0.3rem 0.65rem;
  font-size: 0.8rem;
}

.back-row {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem 0.75rem;
}

.cell-actions {
  white-space: nowrap;
  vertical-align: middle;
}

.json-detail-wrap {
  margin-top: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: auto;
  max-height: min(70vh, 48rem);
  background: var(--bg);
}

.json-detail {
  margin: 0;
  padding: 1rem;
  font-size: 0.8rem;
  line-height: 1.45;
  white-space: pre;
  overflow-x: auto;
}

.page-indicator {
  color: var(--muted);
  font-size: 0.9rem;
}

code {
  font-size: 0.85em;
}