:root {
  --paper: #f3ece1;
  --paper-deep: #e8dfd0;
  --ink: #2a2218;
  --ink-soft: #5c4f3d;
  --ink-faint: #9a8b76;
  --graph-bg: #12100e;
  --graph-surface: #1c1916;
  --accent-rust: #b54a32;
  --accent-gold: #a07c2a;
  --mood-curious: #3d6fa8;
  --mood-certain: #3a7a52;
  --mood-doubting: #a06820;
  --mood-looping: #7a5098;
  --mood-diverging: #a04468;
  --seed: #a07c2a;
}

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

html, body {
  height: 100%;
  overflow: hidden;
}

body {
  font-family: 'Literata', Georgia, serif;
  background: var(--paper);
  color: var(--ink);
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100dvh;
}

header {
  flex-shrink: 0;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  padding: 18px 28px 14px;
  background: var(--paper);
  border-bottom: 2px solid var(--paper-deep);
}

h1 {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: 34px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink);
  line-height: 1;
}

.subtitle {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-style: italic;
  font-size: 15px;
  color: var(--ink-soft);
  margin-top: 2px;
}

.status-block {
  display: flex;
  align-items: center;
  gap: 18px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
}

.mood-badge {
  padding: 5px 11px;
  border-radius: 2px;
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 500;
  transition: background 0.4s, color 0.4s;
}

.mood-badge.curious { background: rgba(61,111,168,0.12); color: var(--mood-curious); }
.mood-badge.certain { background: rgba(58,122,82,0.12); color: var(--mood-certain); }
.mood-badge.doubting { background: rgba(160,104,32,0.12); color: var(--mood-doubting); }
.mood-badge.looping { background: rgba(122,80,152,0.12); color: var(--mood-looping); }
.mood-badge.diverging { background: rgba(160,68,104,0.12); color: var(--mood-diverging); }

.cycle-count { color: var(--ink-faint); }
.cycle-count span { color: var(--accent-rust); font-weight: 500; }
.uptime { color: var(--ink-faint); }

main {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 0;
  overflow: hidden;
}

@media (max-width: 800px) {
  main { grid-template-columns: 1fr; grid-template-rows: 1fr 1fr; }
}

.stream-panel {
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
  background: var(--paper);
  border-right: 2px solid var(--paper-deep);
}

.graph-panel {
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
  background: var(--graph-bg);
}

.stream-header {
  flex-shrink: 0;
  padding: 9px 22px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 9px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  border-bottom: 1px solid var(--paper-deep);
}

.graph-header {
  flex-shrink: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 9px 18px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 9px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #6a6258;
  border-bottom: 1px solid var(--graph-surface);
}

.graph-hint {
  text-transform: none;
  letter-spacing: 0.02em;
  color: #4a4540;
  font-size: 8px;
}

.stream {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  min-height: 0;
  padding: 14px 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.thought {
  font-size: 15px;
  line-height: 1.65;
  padding: 10px 14px 10px 16px;
  border-left: 3px solid var(--paper-deep);
  animation: fadeIn 0.45s ease;
  transition: border-color 0.3s;
}

.thought:first-child {
  font-size: 17px;
  font-weight: 600;
}

.thought.curious { border-left-color: var(--mood-curious); }
.thought.certain { border-left-color: var(--mood-certain); }
.thought.doubting { border-left-color: var(--mood-doubting); }
.thought.looping { border-left-color: var(--mood-looping); }
.thought.diverging { border-left-color: var(--mood-diverging); }

.thought.seeded {
  border-left-color: var(--accent-gold);
  background: rgba(160, 124, 42, 0.07);
}

.thought-meta {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 9px;
  color: var(--ink-faint);
  margin-bottom: 4px;
  letter-spacing: 0.05em;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(5px); }
  to { opacity: 1; transform: translateY(0); }
}

.seed-form {
  flex-shrink: 0;
  display: flex;
  gap: 8px;
  padding: 10px 22px;
  border-top: 1px solid var(--paper-deep);
  background: var(--paper-deep);
}

.seed-form input {
  flex: 1;
  background: var(--paper);
  border: 1px solid #cfc4b4;
  border-radius: 2px;
  padding: 8px 12px;
  color: var(--ink);
  font-family: 'Literata', Georgia, serif;
  font-size: 13px;
  outline: none;
}

.seed-form input:focus { border-color: var(--accent-rust); }

.seed-form button {
  background: var(--accent-rust);
  border: none;
  border-radius: 2px;
  padding: 8px 16px;
  color: var(--paper);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.2s;
}

.seed-form button:hover { background: #943d28; }

.seed-error {
  flex-shrink: 0;
  padding: 0 22px 8px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  color: var(--accent-rust);
  min-height: 18px;
  background: var(--paper-deep);
}

.graph-viewport {
  flex: 1;
  min-height: 0;
  overflow: hidden;
  position: relative;
}

#graph {
  width: 100%;
  height: 100%;
  display: block;
  cursor: grab;
  touch-action: none;
}

#graph.dragging { cursor: grabbing; }

.graph-legend {
  flex-shrink: 0;
  display: flex;
  gap: 16px;
  padding: 7px 18px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 8px;
  color: #5a534c;
  border-top: 1px solid var(--graph-surface);
  background: var(--graph-surface);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 5px;
}

.legend-item .dot {
  display: inline-block;
  border-radius: 50%;
}

.legend-item .dot.size {
  width: 10px;
  height: 10px;
  background: #d4a574;
}

.legend-item .dot.hue {
  width: 10px;
  height: 10px;
  background: linear-gradient(135deg, #c45, #4a8, #58c);
}

.legend-item .line.weight {
  width: 18px;
  height: 0;
  border-top: 2px solid rgba(212, 165, 116, 0.7);
}

footer {
  flex-shrink: 0;
  display: flex;
  justify-content: space-between;
  padding: 8px 28px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 9px;
  color: var(--ink-faint);
  background: var(--paper-deep);
  border-top: 2px solid #ddd2c2;
  letter-spacing: 0.03em;
}

.connection.connected { color: var(--mood-certain); }
.connection.error { color: var(--accent-rust); }