:root {
  --obs-bg: #0c131f;
  --obs-bg-mid: #0a1018;
  --obs-panel: rgba(12, 18, 28, 0.82);
  --obs-panel-border: rgba(100, 130, 170, 0.16);
  --obs-text: #d8dee8;
  --obs-muted: #7a8899;
  --obs-accent: #4a9fd4;
  --obs-accent-dim: rgba(74, 159, 212, 0.28);
  --obs-claim: rgba(74, 159, 212, 0.35);
  --obs-badge: rgba(74, 159, 212, 0.1);
  --obs-badge-text: #8ec4e8;
  --obs-glass-blur: 12px;
  --obs-mono: ui-monospace, 'Cascadia Code', 'SF Mono', monospace;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Segoe UI', system-ui, -apple-system, Roboto, sans-serif;
  background: radial-gradient(ellipse 100% 70% at 50% -10%, #0e1624 0%, var(--obs-bg) 60%);
  color: var(--obs-text);
  min-height: 100vh;
}

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

a:hover {
  text-decoration: underline;
}

.glass {
  background: var(--obs-panel);
  backdrop-filter: blur(var(--obs-glass-blur));
  -webkit-backdrop-filter: blur(var(--obs-glass-blur));
  border: 1px solid var(--obs-panel-border);
  box-shadow:
    0 4px 24px rgba(0, 0, 0, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.obs-header {
  padding: 0.9rem 1.5rem;
  border-bottom: 1px solid var(--obs-panel-border);
}

.obs-header-inner {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.obs-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 600;
  font-size: 1.05rem;
  text-decoration: none;
  color: var(--obs-text);
  letter-spacing: 0.01em;
}

.obs-brand-icon {
  color: var(--obs-accent);
  font-size: 1rem;
  opacity: 0.85;
}

.obs-badge {
  font-family: var(--obs-mono);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.22rem 0.6rem;
  border-radius: 3px;
  background: var(--obs-badge);
  color: var(--obs-badge-text);
  border: 1px solid var(--obs-accent-dim);
}

.obs-fit-btn {
  font-family: var(--obs-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  padding: 0.32rem 0.75rem;
  border-radius: 4px;
  border: 1px solid var(--obs-panel-border);
  background: rgba(74, 159, 212, 0.06);
  color: var(--obs-text);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}

.obs-fit-btn:hover {
  border-color: var(--obs-accent);
  background: rgba(74, 159, 212, 0.12);
}

.obs-subtitle {
  margin: 0.55rem 0 0;
  font-size: 0.82rem;
  color: var(--obs-muted);
  max-width: 58rem;
  line-height: 1.55;
}

.obs-main {
  display: grid;
  grid-template-columns: 280px 1fr;
  min-height: calc(100vh - 110px);
}

@media (max-width: 768px) {
  .obs-main {
    grid-template-columns: 1fr;
  }

  .obs-panel {
    border-right: none !important;
    border-bottom: 1px solid var(--obs-panel-border);
  }
}

.obs-panel {
  padding: 1rem 1.2rem;
  border-right: 1px solid var(--obs-panel-border);
  overflow-y: auto;
  max-height: calc(100vh - 110px);
}

.obs-panel h2 {
  font-family: var(--obs-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--obs-muted);
  margin: 1.15rem 0 0.5rem;
  font-weight: 600;
}

.obs-panel h2:first-child {
  margin-top: 0;
}

.obs-stats {
  margin: 0;
  font-size: 0.82rem;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.12rem 0.75rem;
}

.obs-stats dt {
  color: var(--obs-muted);
}

.obs-stats dd {
  margin: 0;
  font-family: var(--obs-mono);
  font-size: 0.75rem;
  text-align: right;
  color: var(--obs-text);
}

.obs-citizen-list {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 0.8rem;
}

.obs-citizen-list li {
  padding: 0.4rem 0.5rem;
  margin-bottom: 0.2rem;
  border-radius: 4px;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border: 1px solid transparent;
  transition: background 0.12s, border-color 0.12s;
}

.obs-citizen-list li:hover {
  background: rgba(74, 159, 212, 0.06);
  border-color: rgba(74, 159, 212, 0.15);
}

.obs-citizen-list li.active {
  background: rgba(74, 159, 212, 0.1);
  border-color: var(--obs-accent-dim);
}

.obs-citizen-list .dot {
  width: 6px;
  height: 6px;
  border-radius: 1px;
  flex-shrink: 0;
  background: var(--obs-accent);
  box-shadow: 0 0 6px var(--obs-accent-dim);
}

.obs-citizen-list small {
  color: var(--obs-muted);
  font-family: var(--obs-mono);
  font-size: 0.68rem;
}

.obs-feed-list {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 0.73rem;
  max-height: 200px;
  overflow-y: auto;
}

.obs-feed-list li {
  padding: 0.35rem 0;
  border-bottom: 1px solid rgba(100, 130, 170, 0.1);
  color: var(--obs-muted);
  line-height: 1.4;
}

.obs-feed-list .feed-type {
  font-family: var(--obs-mono);
  color: var(--obs-accent);
  font-size: 0.6rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-right: 0.3rem;
}

.obs-feed-list .muted {
  font-style: italic;
}

.obs-spec-link {
  margin-top: 1.4rem;
  font-size: 0.72rem;
  color: var(--obs-muted);
}

.obs-canvas-wrap {
  position: relative;
  min-height: 500px;
  cursor: grab;
  overflow: hidden;
}

.obs-canvas-wrap:active {
  cursor: grabbing;
}

#obs-canvas {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 480px;
}

.obs-minimap {
  position: absolute;
  bottom: 14px;
  right: 14px;
  width: 168px;
  height: 124px;
  border-radius: 4px;
  border: 1px solid var(--obs-panel-border);
  background: rgba(5, 8, 14, 0.88);
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.45);
  pointer-events: none;
  z-index: 2;
}

.obs-hud {
  position: absolute;
  bottom: 14px;
  left: 14px;
  display: flex;
  gap: 0.75rem;
  padding: 0.35rem 0.65rem;
  border-radius: 4px;
  font-family: var(--obs-mono);
  font-size: 0.62rem;
  color: var(--obs-muted);
  letter-spacing: 0.04em;
  z-index: 2;
  pointer-events: none;
}

.obs-hud span::before {
  content: '/';
  margin-right: 0.3rem;
  color: var(--obs-accent-dim);
}

.obs-hud span:first-child::before {
  content: none;
  margin: 0;
}

.obs-tooltip {
  position: absolute;
  z-index: 10;
  pointer-events: none;
  padding: 0.5rem 0.7rem;
  border-radius: 4px;
  font-size: 0.76rem;
  line-height: 1.45;
  max-width: 280px;
  color: var(--obs-text);
  transform: translate(-50%, calc(-100% - 10px));
}

.obs-tooltip[hidden] {
  display: none !important;
}

.obs-tooltip .tip-title {
  font-weight: 600;
  color: #eef2f7;
}

.obs-tooltip .tip-sub {
  color: var(--obs-muted);
  font-family: var(--obs-mono);
  font-size: 0.68rem;
  margin-top: 0.15rem;
}

.obs-tooltip .tip-kind {
  font-family: var(--obs-mono);
  font-size: 0.58rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--obs-accent);
  margin-bottom: 0.2rem;
}

.obs-loading,
.obs-error {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  z-index: 20;
}

.obs-loading[hidden],
.obs-error[hidden] {
  display: none !important;
}

.obs-error {
  color: #c87878;
  padding: 1.5rem;
  text-align: center;
  max-width: 32rem;
  margin: auto;
}