:root {
  color-scheme: light dark;
  --bg: #F5F3ED;
  --fg: #1A1A1A;
  --accent: #00d4aa;
  --accent-dim: #008866;
  --muted: #808080;
  --link: #3675F2;
  --border: #CCCCCC;
  --card-bg: #EAEAEA;
  --surface: #ffffff;
  --success: #29A329;
  --error: #CC3333;
  --warning: #ffaa00;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0a0a0a;
    --fg: #EAEAEA;
    --accent: #00d4aa;
    --accent-dim: #008866;
    --muted: #888;
    --link: #5E90F5;
    --border: #333;
    --card-bg: #1a1a1a;
    --surface: #1a1a1a;
    --success: #00d4aa;
    --error: #ff4444;
    --warning: #ffaa00;
  }
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'JetBrains Mono', 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  font-size: 13px;
  min-height: 100vh;
}

.split-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 100vh;
}

@media (max-width: 1024px) {
  .split-container {
    grid-template-columns: 1fr;
  }
}

.left-column {
  border-right: 2px solid var(--border);
  padding: 2rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

@media (max-width: 1024px) {
  .left-column {
    border-right: none;
    border-bottom: 2px solid var(--border);
  }
}

.right-column {
  padding: 2rem;
  overflow-y: auto;
  background: var(--card-bg);
}

header {
  text-align: center;
  padding-bottom: 1.5rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.logo {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.2em;
  margin-bottom: 0.5rem;
}

h1 {
  font-size: 1.8rem;
  font-weight: 700;
  margin: 0.3rem 0;
}

.motto {
  color: var(--accent);
  font-style: italic;
  font-size: 1rem;
  margin-bottom: 0.3rem;
}

.intro {
  color: var(--muted);
  font-size: 0.85rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}

.right-column .card {
  background: var(--bg);
}

h2 {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.endpoint-list {
  margin-bottom: 0.75rem;
}

.endpoint {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 0.8rem;
  margin-bottom: 0.4rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
}

.right-column .endpoint {
  background: var(--card-bg);
}

.endpoint code {
  font-size: 0.9rem;
  color: var(--accent);
  font-weight: 600;
}

.endpoint code.primary {
  font-size: 1rem;
}

.tag {
  font-size: 0.7rem;
  padding: 0.2rem 0.4rem;
  background: var(--accent-dim);
  color: #fff;
  border-radius: 3px;
}

.ports {
  text-align: center;
  color: var(--muted);
  font-size: 0.8rem;
  padding-top: 0.5rem;
}

.config-section details {
  margin-bottom: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
}

.config-section summary {
  padding: 0.6rem 0.8rem;
  background: var(--bg);
  cursor: pointer;
  font-weight: 600;
  font-size: 0.85rem;
  transition: background 0.2s;
}

.config-section summary:hover {
  background: var(--border);
}

.config-section details[open] summary {
  border-bottom: 1px solid var(--border);
}

.config-section pre {
  margin: 0;
  padding: 0.8rem;
  background: var(--bg);
  overflow-x: auto;
}

.config-section code {
  font-size: 0.8rem;
  line-height: 1.4;
}

.feature-list {
  list-style: none;
  margin: 0.75rem 0;
}

.feature-list li {
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.85rem;
}

.feature-list li:last-child {
  border-bottom: none;
}

.note {
  font-size: 0.8rem;
  color: var(--muted);
  font-style: italic;
  margin-top: 0.75rem;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

footer {
  margin-top: auto;
  padding-top: 1.5rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.8rem;
  border-top: 1px solid var(--border);
}

/* Right column - Testing/Stats styles */
.time-display {
  background: linear-gradient(135deg, var(--bg) 0%, var(--card-bg) 100%);
}

.clock-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

@media (max-width: 640px) {
  .clock-grid {
    grid-template-columns: 1fr;
  }
}

.clock-box {
  text-align: center;
  padding: 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
}

.clock-box h3 {
  font-size: 0.7rem;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.4rem;
  letter-spacing: 0.1em;
}

.clock {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--accent);
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.03em;
  margin: 0.3rem 0;
}

.clock-meta {
  font-size: 0.75rem;
  color: var(--muted);
}

.server-grid {
  display: grid;
  gap: 0.5rem;
}

.server-item {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  gap: 0.75rem;
  align-items: center;
  padding: 0.6rem 0.8rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.8rem;
}

.status-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}

.status-indicator.synced {
  background: var(--success);
  box-shadow: 0 0 6px var(--success);
}

.status-indicator.unsynchronized {
  background: var(--warning);
}

.status-indicator.unreachable {
  background: var(--error);
}

.server-name {
  font-weight: 600;
}

.server-stratum,
.server-offset {
  color: var(--muted);
  font-size: 0.75rem;
}

.status-legend {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-top: 0.75rem;
  font-size: 0.75rem;
  color: var(--muted);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.test-desc {
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 0.75rem;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 0.6rem 1.2rem;
  border-radius: 4px;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  width: 100%;
}

.btn-primary:hover {
  background: var(--accent-dim);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-primary:disabled {
  background: var(--muted);
  cursor: not-allowed;
}

.sync-result {
  margin-top: 0.75rem;
  padding: 0.75rem;
  border-radius: 4px;
  display: none;
  font-size: 0.85rem;
}

.sync-result.show {
  display: block;
}

.sync-result.success {
  background: rgba(0, 212, 170, 0.1);
  border: 1px solid var(--success);
}

.sync-result.error {
  background: rgba(255, 68, 68, 0.1);
  border: 1px solid var(--error);
}

.stats-box .stat-grid {
  display: grid;
  gap: 0.5rem;
}

.stat-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
}

.stat-item:last-child {
  border-bottom: none;
}

.stat-label {
  color: var(--muted);
  font-size: 0.8rem;
}

.stat-value {
  font-weight: 600;
  font-size: 0.85rem;
}

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