/* ==========================================================================
   Active Time-of-Flight (ToF) Simulator: Sonar, Radar & LiDAR
   Styles for interactive wave propagation and echolocation laboratory.
   ========================================================================== */

:root {
  --tof-bg: #090d16;
  --tof-card-bg: #0f172a;
  --tof-card-border: #1e293b;
  --tof-text: #f1f5f9;
  --tof-text-muted: #94a3b8;
  --tof-sonar: #06b6d4;
  --tof-sonar-glow: rgba(6, 182, 212, 0.25);
  --tof-radar: #10b981;
  --tof-radar-glow: rgba(16, 185, 129, 0.25);
  --tof-lidar: #f59e0b;
  --tof-lidar-glow: rgba(245, 158, 11, 0.25);
  --tof-scope-bg: #04100c;
  --tof-scope-grid: #0d281e;
  --tof-scope-trace: #34d399;
  --tof-radius: 12px;
  --tof-font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

.tof-simulator-widget {
  margin: 2.5rem 0;
  padding: 1.5rem;
  background: var(--tof-bg);
  border: 1px solid var(--tof-card-border);
  border-radius: var(--tof-radius);
  color: var(--tof-text);
  box-shadow: 0 20px 40px -12px rgba(0, 0, 0, 0.7);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  overflow: hidden;
}

/* Header */
.tof-header {
  margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--tof-card-border);
  padding-bottom: 1.15rem;
}

.tof-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.35);
  color: var(--tof-radar);
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.6rem;
}

.tof-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: #fff;
  margin: 0 0 0.4rem 0;
  line-height: 1.25;
}

.tof-subtitle {
  font-size: 0.88rem;
  color: var(--tof-text-muted);
  line-height: 1.5;
  margin: 0;
}

/* Regime Selector Toolbar */
.tof-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.tof-regime-group {
  display: inline-flex;
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid var(--tof-card-border);
  border-radius: 8px;
  padding: 0.25rem;
  gap: 0.25rem;
}

.tof-regime-btn {
  background: transparent;
  border: none;
  color: var(--tof-text-muted);
  padding: 0.4rem 0.9rem;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.18s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.tof-regime-btn:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
}

.tof-regime-btn.active[data-regime="sonar"] {
  background: var(--tof-sonar);
  color: #041019;
  box-shadow: 0 2px 10px var(--tof-sonar-glow);
}

.tof-regime-btn.active[data-regime="radar"] {
  background: var(--tof-radar);
  color: #04140c;
  box-shadow: 0 2px 10px var(--tof-radar-glow);
}

.tof-regime-btn.active[data-regime="lidar"] {
  background: var(--tof-lidar);
  color: #1a0f02;
  box-shadow: 0 2px 10px var(--tof-lidar-glow);
}

.tof-actions-group {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.tof-btn {
  padding: 0.45rem 0.9rem;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.18s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border: 1px solid var(--tof-card-border);
}

.tof-btn-primary {
  background: #2563eb;
  color: #fff;
  border-color: #3b82f6;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

.tof-btn-primary:hover {
  background: #1d4ed8;
  transform: translateY(-1px);
}

.tof-btn-secondary {
  background: rgba(15, 23, 42, 0.8);
  color: var(--tof-text-muted);
}

.tof-btn-secondary:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

.tof-btn-secondary.active {
  background: rgba(16, 185, 129, 0.15);
  color: var(--tof-radar);
  border-color: rgba(16, 185, 129, 0.4);
}

/* Main Visualizer Area */
.tof-canvas-container {
  position: relative;
  width: 100%;
  height: 380px;
  background: #060911;
  border: 1px solid var(--tof-card-border);
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 1rem;
}

.tof-canvas {
  width: 100%;
  height: 100%;
  display: block;
  cursor: crosshair;
}

.tof-canvas-overlay {
  position: absolute;
  top: 12px;
  left: 12px;
  right: 12px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  pointer-events: none;
}

.tof-regime-pill {
  padding: 0.3rem 0.75rem;
  border-radius: 6px;
  font-size: 0.75rem;
  font-family: var(--tof-font-mono);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: rgba(6, 9, 17, 0.85);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.tof-target-badge {
  padding: 0.3rem 0.75rem;
  border-radius: 6px;
  font-size: 0.75rem;
  font-family: var(--tof-font-mono);
  background: rgba(6, 9, 17, 0.85);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--tof-text-muted);
}

.tof-drag-hint {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.76rem;
  color: var(--tof-text-muted);
  background: rgba(6, 9, 17, 0.85);
  backdrop-filter: blur(6px);
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  pointer-events: none;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

/* Controls Deck */
.tof-controls-deck {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  background: var(--tof-card-bg);
  border: 1px solid var(--tof-card-border);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  margin-bottom: 1rem;
}

.tof-control-item {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.tof-control-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--tof-text-muted);
}

.tof-control-val {
  font-family: var(--tof-font-mono);
  color: #fff;
  font-weight: 700;
}

.tof-slider {
  width: 100%;
  -webkit-appearance: none;
  height: 6px;
  border-radius: 3px;
  background: #1e293b;
  outline: none;
  cursor: pointer;
}

.tof-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #38bdf8;
  cursor: pointer;
  box-shadow: 0 0 8px rgba(56, 189, 248, 0.6);
  transition: transform 0.15s ease;
}

.tof-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

/* Virtual Oscilloscope */
.tof-scope-panel {
  background: var(--tof-scope-bg);
  border: 1px solid #134e38;
  border-radius: 8px;
  padding: 0.9rem 1.1rem;
  margin-bottom: 1rem;
  box-shadow: inset 0 0 20px rgba(4, 16, 12, 0.9);
}

.tof-scope-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  font-family: var(--tof-font-mono);
  color: #6ee7b7;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.tof-scope-canvas {
  width: 100%;
  height: 85px;
  display: block;
}

/* Telemetry Grid */
.tof-telemetry-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
}

.tof-telemetry-card {
  background: var(--tof-card-bg);
  border: 1px solid var(--tof-card-border);
  border-radius: 8px;
  padding: 0.85rem 1rem;
}

.tof-telemetry-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--tof-text-muted);
  margin-bottom: 0.3rem;
}

.tof-telemetry-value {
  font-size: 1.15rem;
  font-family: var(--tof-font-mono);
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
}

.tof-telemetry-unit {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--tof-text-muted);
  margin-left: 0.2rem;
}

.tof-telemetry-sub {
  font-size: 0.72rem;
  color: var(--tof-text-muted);
  margin-top: 0.3rem;
  font-family: var(--tof-font-mono);
}

/* Responsive */
@media (max-width: 850px) {
  .tof-telemetry-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .tof-controls-deck {
    grid-template-columns: 1fr;
  }
  .tof-canvas-container {
    height: 300px;
  }
}

@media (max-width: 550px) {
  .tof-telemetry-grid {
    grid-template-columns: 1fr;
  }
  .tof-toolbar {
    flex-direction: column;
    align-items: stretch;
  }
  .tof-regime-group {
    width: 100%;
    justify-content: space-between;
  }
  .tof-actions-group {
    width: 100%;
    justify-content: space-between;
  }
}