:root {
  --bg: #0f1419;
  --panel: #1a2332;
  --text: #e7e9ea;
  --muted: #8b98a5;
  --accent: #1d9bf0;
  --border: #2f3b4a;
  --danger: #f4212e;
  --ok: #00ba7c;
  font-family: system-ui, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

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

header {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

h1 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 600;
}

main {
  padding: 1.5rem;
  max-width: 960px;
  margin: 0 auto;
}

label {
  display: block;
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 0.25rem;
}

input,
textarea,
select {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
}

textarea {
  min-height: 120px;
  resize: vertical;
}

button {
  padding: 0.5rem 1rem;
  border-radius: 6px;
  border: none;
  background: var(--accent);
  color: #fff;
  font: inherit;
  cursor: pointer;
}

button.secondary {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}

button.danger {
  background: var(--danger);
}

.grid {
  display: grid;
  gap: 1rem;
}

.grid.two {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th,
td {
  text-align: left;
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--border);
}

th {
  color: var(--muted);
  font-weight: 500;
}

.badge {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
}

.badge.ok {
  background: rgba(0, 186, 124, 0.2);
  color: var(--ok);
}

.badge.off {
  background: rgba(244, 33, 46, 0.15);
  color: #ff8a8a;
}

.nav {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

small.hint {
  color: var(--muted);
  font-size: 0.8rem;
}

.hidden {
  display: none !important;
}

.error {
  color: #f87171;
  font-size: 0.9rem;
}

.agent-tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.5rem 1rem;
  margin-top: 0.5rem;
  font-size: 0.9rem;
}

.agent-tools-grid label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin: 0;
  color: var(--text);
}

.msg-pre {
  white-space: pre-wrap;
  font-size: 0.85rem;
  background: var(--bg);
  padding: 0.75rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  max-height: 320px;
  overflow: auto;
}