/* WiFi-DensePose — Dual-Modal Pose Fusion Demo
   Dark theme matching Observatory */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600;700&family=JetBrains+Mono:wght@400;600&display=swap');

:root {
  --bg-deep:     #080c14;
  --bg-panel:    rgba(8, 16, 28, 0.92);
  --bg-panel-border: rgba(0, 210, 120, 0.25);
  --green-glow:  #00d878;
  --green-bright:#3eff8a;
  --green-dim:   #0a6b3a;
  --amber:       #ffb020;
  --amber-dim:   #a06800;
  --blue-signal: #2090ff;
  --blue-dim:    #0a3060;
  --red-alert:   #ff3040;
  --cyan:        #00e5ff;
  --text-primary:   #e8ece0;
  --text-secondary: rgba(232,236,224, 0.55);
  --text-label:     rgba(232,236,224, 0.35);
  --radius: 8px;
}

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

body {
  background: var(--bg-deep);
  font-family: 'Inter', -apple-system, sans-serif;
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  min-height: 100vh;
}

/* === Header === */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-bottom: 1px solid var(--bg-panel-border);
  background: var(--bg-panel);
  backdrop-filter: blur(12px);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.logo {
  font-weight: 700;
  font-size: 24px;
  color: var(--green-glow);
}

.logo .pi { font-style: normal; }

.header-title {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 300;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.mode-select {
  background: rgba(0,210,120,0.1);
  border: 1px solid var(--bg-panel-border);
  color: var(--text-primary);
  padding: 6px 12px;
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 13px;
  cursor: pointer;
}

.mode-select option { background: #0c1420; }

.status-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 12px;
  background: rgba(0,210,120,0.1);
  border: 1px solid var(--bg-panel-border);
}

.status-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--green-glow);
  box-shadow: 0 0 8px var(--green-glow);
  animation: pulse-dot 2s ease infinite;
}

.status-dot.offline { background: #555; box-shadow: none; animation: none; }
.status-dot.warning { background: var(--amber); box-shadow: 0 0 8px var(--amber); }

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.fps-badge {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--green-glow);
}

.back-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
  transition: color 0.2s;
}
.back-link:hover { color: var(--green-glow); }

/* === Main Layout === */
.main-grid {
  display: grid;
  grid-template-columns: 1fr 360px;
  grid-template-rows: 1fr auto;
  gap: 16px;
  padding: 16px 24px;
  height: calc(100vh - 72px);
  overflow: hidden;
}

.video-panel {
  grid-row: 1;
}

.side-panels {
  grid-row: 1;
}

/* === Video Panel === */
.video-panel {
  position: relative;
  background: #000;
  border-radius: var(--radius);
  border: 1px solid var(--bg-panel-border);
  overflow: hidden;
  min-height: 0;
}

.video-panel video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scaleX(-1);
}

.video-panel canvas {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  transform: scaleX(-1);
}

.video-overlay-label {
  position: absolute;
  top: 12px; left: 12px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  padding: 4px 8px;
  background: rgba(0,0,0,0.7);
  border-radius: 4px;
  color: var(--green-glow);
  z-index: 5;
  transform: scaleX(-1);
}

.camera-prompt {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--text-secondary);
  padding: 24px;
  z-index: 6;
  background: radial-gradient(ellipse at center, rgba(0,210,120,0.08) 0%, rgba(8,12,20,0.95) 70%);
}

.camera-prompt button {
  margin-top: 16px;
  padding: 10px 24px;
  background: var(--green-glow);
  color: #000;
  border: none;
  border-radius: var(--radius);
  font-family: inherit;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: background 0.2s;
}

.camera-prompt button:hover { background: var(--green-bright); }

.camera-prompt-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--green-glow);
  text-shadow: 0 0 12px rgba(0,216,120,0.4);
  margin-bottom: 12px;
}

/* === Side Panels === */
.side-panels {
  display: flex;
  flex-direction: column;
  gap: 8px;
  overflow-y: auto;
  min-height: 0;
  max-height: 100%;
  scrollbar-width: thin;
  scrollbar-color: var(--green-dim) transparent;
}

.panel {
  background: var(--bg-panel);
  border: 1px solid var(--bg-panel-border);
  border-radius: var(--radius);
  padding: 10px 14px;
  flex-shrink: 0;
}

.panel-title {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--text-label);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* === CSI Heatmap === */
.csi-canvas-wrapper {
  position: relative;
  border-radius: 4px;
  overflow: hidden;
  background: #000;
}

.csi-canvas-wrapper canvas {
  width: 100%;
  display: block;
}

/* === Fusion Bars === */
.fusion-bars {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.bar-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.bar-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--text-secondary);
  width: 55px;
  text-align: right;
}

.bar-track {
  flex: 1;
  height: 6px;
  background: rgba(255,255,255,0.06);
  border-radius: 3px;
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.3s ease;
}

.bar-fill.video { background: var(--cyan); }
.bar-fill.csi { background: var(--amber); }
.bar-fill.fused { background: var(--green-glow); box-shadow: 0 0 8px var(--green-glow); }

.bar-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--text-primary);
  width: 36px;
}

/* === Embedding Space === */
.embedding-canvas-wrapper {
  position: relative;
  background: #000;
  border-radius: 4px;
  overflow: hidden;
}
.embedding-canvas-wrapper canvas {
  width: 100%;
  display: block;
}

/* === RuVector Pipeline === */
.rv-pipeline {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}

.rv-stage {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  padding: 3px 6px;
  border-radius: 3px;
  background: rgba(0,210,120,0.12);
  border: 1px solid rgba(0,210,120,0.3);
  color: var(--green-glow);
  transition: all 0.3s;
}

.rv-stage.active {
  background: rgba(0,210,120,0.25);
  box-shadow: 0 0 6px rgba(0,210,120,0.3);
}

.rv-arrow {
  font-size: 10px;
  color: var(--text-label);
}

.rv-stats {
  display: flex;
  gap: 12px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--text-secondary);
}

/* === Latency Panel === */
.latency-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}

.latency-item {
  text-align: center;
  padding: 6px 0;
}

.latency-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 16px;
  font-weight: 600;
  color: var(--green-glow);
}

.latency-label {
  font-size: 10px;
  color: var(--text-label);
  margin-top: 2px;
}

/* === Controls === */
.controls-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.btn {
  padding: 6px 14px;
  border: 1px solid var(--bg-panel-border);
  background: rgba(0,210,120,0.08);
  color: var(--text-primary);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s;
}
.btn:hover { background: rgba(0,210,120,0.2); }
.btn.active { background: var(--green-glow); color: #000; font-weight: 600; }

.slider-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
}

.slider-row label {
  font-size: 11px;
  color: var(--text-secondary);
  white-space: nowrap;
}

.slider-row input[type=range] {
  flex: 1;
  accent-color: var(--green-glow);
}

.slider-row .slider-val {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  width: 32px;
  color: var(--green-glow);
}

/* === Bottom Bar === */
.bottom-bar {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: var(--bg-panel);
  border: 1px solid var(--bg-panel-border);
  border-radius: var(--radius);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--text-secondary);
}

.bottom-bar a {
  color: var(--green-glow);
  text-decoration: none;
}

/* === RSSI Signal Strength === */
.rssi-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.rssi-gauge { flex: 1; }

.rssi-bar-track {
  height: 8px;
  background: rgba(255,255,255,0.06);
  border-radius: 4px;
  overflow: hidden;
  position: relative;
}

.rssi-bar-fill {
  height: 100%;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--red-alert), var(--amber), var(--green-glow));
  transition: width 0.4s ease;
  position: relative;
  box-shadow: 0 0 6px rgba(0,210,120,0.3);
}

.rssi-bar-fill::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.2) 50%, transparent 100%);
  animation: rssi-shimmer 2s ease-in-out infinite;
}

@keyframes rssi-shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.rssi-values {
  display: flex;
  justify-content: space-between;
  margin-top: 4px;
}

.rssi-dbm {
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  font-weight: 600;
  color: var(--green-glow);
}

.rssi-quality {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--text-secondary);
  text-transform: uppercase;
}

#rssi-sparkline {
  flex-shrink: 0;
  border-radius: 4px;
  background: rgba(0,0,0,0.3);
}

/* === Skeleton colors === */
.skeleton-joint { fill: var(--green-glow); }
.skeleton-limb { stroke: var(--green-bright); }
.skeleton-joint-csi { fill: var(--amber); }
.skeleton-limb-csi { stroke: var(--amber); }

/* === Responsive === */
@media (max-width: 900px) {
  .main-grid {
    grid-template-columns: 1fr;
    height: auto;
    overflow: auto;
  }
  .video-panel { aspect-ratio: 16/9; max-height: 50vh; }
  .side-panels { max-height: none; overflow: visible; }
}