/* ============================================================
   Expressions of Geometry -- Style
   Dark glassmorphism, ambient typography, gallery grid
   ============================================================ */

:root {
  --bg-void: #000000;
  --bg-panel: rgba(10, 12, 16, 0.92);
  --bg-panel-hover: rgba(255, 255, 255, 0.04);
  --border: rgba(255, 255, 255, 0.07);
  --border-bright: rgba(255, 255, 255, 0.14);
  --text-primary: #e8e4df;
  --text-secondary: #8e99a8;
  --text-muted: #505a68;
  --accent: #FC5200;
  --route-color: rgba(255, 190, 100, 0.30);
  --route-highlight: #FC5200;
  --font-heading: 'Geologica', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --radius: 6px;
  --transition: 200ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

body {
  background: var(--bg-void);
  color: var(--text-primary);
  font-family: var(--font-body);
  overflow: hidden;
  height: 100vh;
  width: 100vw;
}

/* ---- Map ---- */
#map {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.mapboxgl-ctrl-attrib,
.maplibregl-ctrl-attrib { opacity: 0.3; }
.mapboxgl-ctrl-attrib:hover,
.maplibregl-ctrl-attrib:hover { opacity: 0.8; }

/* ---- Title block ---- */
#title-block {
  position: absolute;
  top: 24px;
  left: 28px;
  z-index: 10;
  pointer-events: none;
}

#title-block h1 {
  font-family: var(--font-heading);
  font-weight: 200;
  font-size: 1.5rem;
  letter-spacing: 0.04em;
  color: var(--text-primary);
  opacity: 0.85;
}

#title-block .subtitle {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ---- Ambient stats ---- */
#ambient-stats {
  position: absolute;
  bottom: 28px;
  left: 28px;
  z-index: 10;
  display: flex;
  gap: 32px;
  pointer-events: none;
}

.ambient-stat {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.ambient-num {
  font-family: var(--font-heading);
  font-weight: 200;
  font-size: 2.2rem;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  opacity: 0.55;
  line-height: 1;
}

.ambient-num--small {
  font-size: 1rem;
  font-family: var(--font-mono);
  font-weight: 300;
  letter-spacing: 0.02em;
  opacity: 0.35;
}

.ambient-label {
  font-family: var(--font-mono);
  font-weight: 300;
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  opacity: 0.6;
  margin-top: 2px;
}

/* ---- Controls ---- */
#controls {
  position: absolute;
  bottom: 28px;
  right: 28px;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
}

#mode-controls {
  display: flex;
  gap: 2px;
  background: var(--bg-panel);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 3px;
}

.mode-btn {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: transparent;
  border: none;
  padding: 6px 12px;
  border-radius: 4px;
  cursor: pointer;
  transition: all var(--transition);
}

.mode-btn:hover {
  color: var(--text-secondary);
  background: var(--bg-panel-hover);
}

.mode-btn.active {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.06);
}

/* ---- Type filters ---- */
#type-filters {
  display: flex;
  gap: 2px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.type-chip {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.03em;
  color: var(--text-muted);
  background: var(--bg-panel);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 4px 10px;
  cursor: pointer;
  transition: all var(--transition);
  user-select: none;
}

.type-chip:hover { color: var(--text-secondary); }
.type-chip.active {
  color: var(--text-primary);
  border-color: var(--border-bright);
}
.type-chip .chip-count {
  opacity: 0.5;
  margin-left: 4px;
}

.type-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  margin-right: 5px;
  vertical-align: middle;
}

/* ---- Location nav ---- */
#location-nav {
  position: absolute;
  top: 70px;
  left: 28px;
  z-index: 10;
  display: flex;
  gap: 2px;
  background: var(--bg-panel);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 3px;
}

.loc-btn {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: transparent;
  border: none;
  padding: 5px 10px;
  border-radius: 4px;
  cursor: pointer;
  transition: all var(--transition);
}

.loc-btn:hover {
  color: var(--text-secondary);
  background: var(--bg-panel-hover);
}

.loc-btn.active {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.06);
}

/* ---- Detail type badge ---- */
.detail-type {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 10px;
  opacity: 0.9;
}

/* ---- Route detail panel ---- */
.panel {
  position: absolute;
  top: 24px;
  right: 28px;
  width: 280px;
  z-index: 20;
  background: var(--bg-panel);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: opacity var(--transition), transform var(--transition);
}

.panel.hidden {
  opacity: 0;
  pointer-events: none;
  transform: translateX(12px);
}

#detail-close {
  position: absolute;
  top: 12px;
  right: 14px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.2rem;
  cursor: pointer;
  line-height: 1;
}
#detail-close:hover { color: var(--text-primary); }

#detail-content h3 {
  font-family: var(--font-heading);
  font-weight: 300;
  font-size: 0.95rem;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.detail-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  padding: 4px 0;
  border-bottom: 1px solid var(--border);
}
.detail-row:last-child { border-bottom: none; }
.detail-key { color: var(--text-muted); font-family: var(--font-mono); font-size: 0.65rem; }
.detail-val { color: var(--text-secondary); font-family: var(--font-mono); }

/* ---- Gallery overlay ---- */
#gallery-overlay {
  position: absolute;
  inset: 0;
  z-index: 50;
  background: var(--bg-void);
  overflow-y: auto;
  transition: opacity 300ms ease;
}

#gallery-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

#gallery-header {
  position: sticky;
  top: 0;
  z-index: 51;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 28px;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

#gallery-header h2 {
  font-family: var(--font-heading);
  font-weight: 200;
  font-size: 1.1rem;
  letter-spacing: 0.04em;
  color: var(--text-primary);
  opacity: 0.8;
}

#gallery-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.4rem;
  cursor: pointer;
  padding: 4px 8px;
}
#gallery-close:hover { color: var(--text-primary); }

#gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 4px;
  padding: 4px 28px 60px;
}

.gallery-card {
  position: relative;
  aspect-ratio: 1;
  cursor: pointer;
  overflow: hidden;
  border-radius: 2px;
  transition: transform var(--transition);
}

.gallery-card:hover { transform: scale(1.02); }

.gallery-card canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.gallery-card .gallery-label {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 6px 8px;
  font-family: var(--font-mono);
  font-size: 0.55rem;
  color: var(--text-muted);
  opacity: 0;
  transition: opacity var(--transition);
  background: linear-gradient(transparent, rgba(0,0,0,0.7));
}

.gallery-card:hover .gallery-label { opacity: 1; }

/* ---- Poster overlay ---- */
#poster-overlay {
  position: absolute;
  inset: 0;
  z-index: 50;
  background: var(--bg-void);
  display: flex;
  flex-direction: column;
  transition: opacity 300ms ease;
}

#poster-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

#poster-header {
  position: sticky;
  top: 0;
  z-index: 51;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 28px;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

#poster-header h2 {
  font-family: var(--font-heading);
  font-weight: 200;
  font-size: 1.1rem;
  letter-spacing: 0.04em;
  color: var(--text-primary);
  opacity: 0.8;
}

.poster-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

#poster-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.4rem;
  cursor: pointer;
  padding: 4px 8px;
  line-height: 1;
}
#poster-close:hover { color: var(--text-primary); }

#poster-stage {
  flex: 1;
  position: relative;
  min-height: 0;
}

#poster-canvas {
  display: block;
  width: 100%;
  height: 100%;
}

/* ---- Loading ---- */
#loading {
  position: absolute;
  inset: 0;
  z-index: 100;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  background: var(--bg-void);
  transition: opacity 600ms ease;
}

#loading.done {
  opacity: 0;
  pointer-events: none;
}

#loading span {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
}

.spinner {
  width: 24px;
  height: 24px;
  border: 2px solid var(--border);
  border-top-color: var(--text-secondary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ---- Nav back ---- */
#nav-back {
  position: absolute;
  top: 24px;
  right: 28px;
  z-index: 10;
}

#nav-back a {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  text-decoration: none;
  padding: 6px 12px;
  background: var(--bg-panel);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all var(--transition);
}

#nav-back a:hover {
  color: var(--text-secondary);
  border-color: var(--border-bright);
}

/* ---- Temporal legend & controls ---- */
#temporal-legend {
  position: absolute;
  bottom: 80px;
  left: 28px;
  right: 28px;
  z-index: 10;
  display: none;
  align-items: center;
  gap: 10px;
  pointer-events: auto;
  background: var(--bg-panel);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 16px;
}

#temporal-legend.visible { display: flex; }

.temporal-bar {
  width: 160px;
  height: 6px;
  border-radius: 3px;
  background: linear-gradient(90deg, #2a4d8f, #4a8fa5, #c4a747, #fc5200);
}

#temporal-slider {
  flex: 1;
  height: 4px;
  -webkit-appearance: none;
  appearance: none;
  background: linear-gradient(90deg, #2a4d8f, #4a8fa5, #7ab87a, #c4a747, #fc5200);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}

#temporal-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--text-primary);
  border: 2px solid rgba(0, 0, 0, 0.5);
  cursor: grab;
}

#temporal-slider::-webkit-slider-thumb:active {
  cursor: grabbing;
  transform: scale(1.2);
}

.temporal-label {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  color: var(--text-muted);
  opacity: 0.6;
  white-space: nowrap;
}

.temporal-current-label {
  color: var(--text-primary);
  opacity: 0.9;
  font-size: 0.6rem;
  min-width: 60px;
  text-align: center;
}

#temporal-play {
  font-size: 0.7rem;
  padding: 4px 8px;
  min-width: 28px;
}

/* ---- Responsive ---- */
@media (max-width: 640px) {
  #title-block { top: 14px; left: 14px; }
  #title-block h1 { font-size: 1.1rem; }
  #ambient-stats { bottom: 80px; left: 14px; gap: 20px; }
  .ambient-num { font-size: 1.6rem; }
  #controls { bottom: 14px; right: 14px; }
  #nav-back { top: 14px; right: 14px; }
  #location-nav { top: 56px; left: 14px; }
  #temporal-legend { bottom: 70px; left: 14px; right: 14px; }
  .panel { top: auto; bottom: 80px; right: 14px; left: 14px; width: auto; }
  #gallery-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    padding: 4px 14px 40px;
  }
}