frontend/src/components/CognitiveBrainScene.css

/* CognitiveBrainScene.css - "Thinking Screen" Aesthetic */

.brain-viewport {
  width: 100%;
  height: 100%;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  perspective: 1100px;
}

.brain-core {
  position: relative;
  width: 380px;
  height: 380px;
  z-index: 10;
  transition: transform 0.5s ease;
}

/* ── Exclusive Layer Stacking ── */
.brain-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  opacity: 0;
  transform: scale(0.98);
  transition: 
    opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), 
    transform 0.8s cubic-bezier(0.16, 1, 0.3, 1),
    filter 0.6s ease;
  pointer-events: none;
  filter: contrast(1.1);
}

.brain-layer.active {
  opacity: 1;
  transform: scale(1);
}

/* Ensure only ONE layer is ever visible (The Swap) */
.brain-layer.base.active {
  z-index: 1;
}

.brain-layer.region.active {
  z-index: 2;
  opacity: 1 !important;
}

/* If a region is active, hide the base entirely to avoid overlapping/ghosting */
.brain-viewport:has(.brain-layer.region.active) .brain-layer.base {
  opacity: 0 !important;
}

.brain-layer.base.active {
  /* Clean slate for multiply blend */
}

.brain-layer.region.active {
  /* Clean slate for multiply blend */
}

/* ── Layer 1: Ambient Motion (Breathing) ── */
.ambient-breath {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle, rgba(255, 107, 53, 0.04) 0%, transparent 75%);
  animation: breathing 8s infinite ease-in-out;
  pointer-events: none;
  z-index: -1;
}

@keyframes breathing {
  0%, 100% { transform: scale(0.96); opacity: 0.3; }
  50% { transform: scale(1.04); opacity: 0.5; }
}

/* ── Layer 2: Cognitive Signals (Floating Labels) ── */
.neural-signals {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 20;
}

.signal-node {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 16px;
  opacity: 0.2;
  transition: all 0.6s ease;
  filter: grayscale(1) blur(0.5px);
}

.signal-node.active {
  opacity: 1;
  filter: grayscale(0) blur(0);
  transform: scale(1.1) translateX(10px);
  transition: all 0.1s ease-out;
}

.signal-node.hot {
  opacity: 1;
  filter: grayscale(0) blur(0);
  animation: signal-hot-throb 1.5s infinite ease-in-out;
}

@keyframes signal-hot-throb {
  0%, 100% { transform: scale(1.1) translateX(10px); filter: brightness(1); }
  50% { transform: scale(1.15) translateX(15px); filter: brightness(1.3); }
}

.signal-dot {
  width: 10px;
  height: 10px;
  background-color: #d1d5db;
  border-radius: 50%;
  box-shadow: none;
  transition: all 0.6s ease;
}

.signal-node.active .signal-dot {
  transition: all 0.1s ease-out;
}

/* ── Active Color Mapping ── */
.signal-node.active.prefrontal .signal-dot { background-color: #f59e0b; box-shadow: 0 0 15px rgba(245, 158, 11, 0.8); }
.signal-node.active.parietal .signal-dot { background-color: #ff6b35; box-shadow: 0 0 15px rgba(255, 107, 53, 0.8); }
.signal-node.active.temporal .signal-dot { background-color: #10b981; box-shadow: 0 0 15px rgba(16, 185, 129, 0.8); }
.signal-node.active.thalamus-label .signal-dot { background-color: #3b82f6; box-shadow: 0 0 15px rgba(59, 130, 246, 0.8); }

.signal-node.active.prefrontal strong { color: #f59e0b; }
.signal-node.active.parietal strong { color: #ff6b35; }
.signal-node.active.temporal strong { color: #10b981; }
.signal-node.active.thalamus-label strong { color: #3b82f6; }

.signal-copy {
  display: flex;
  flex-direction: column;
}

.signal-copy strong {
  font-size: 0.7rem;
  font-weight: 800;
  color: #1a1a1a;
  line-height: 1.1;
  transition: color 0.6s ease;
}

.signal-node.active strong {
  transition: color 0.1s ease-out;
}

.signal-copy span {
  font-size: 0.6rem;
  color: #999;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}

.prefrontal { top: 5%; left: -60px; }
.parietal { top: 5%; right: -60px; flex-direction: row-reverse; text-align: right; }
.temporal { bottom: 10%; left: -60px; }
.thalamus-label { bottom: 10%; right: -60px; flex-direction: row-reverse; text-align: right; }

/* ── State Glow Hubs (Subtle Ambient Backglow) ── */
.glow-hub {
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0;
  transition: opacity 1.2s ease;
  pointer-events: none;
  z-index: 0;
}

.glow-hub.visible {
  opacity: 0.25;
}

.prefrontal-glow { top: 0%; left: 5%; background: radial-gradient(circle, rgba(255, 107, 53, 0.3) 0%, transparent 70%); }
.parietal-glow { top: 0%; right: 5%; background: radial-gradient(circle, rgba(59, 130, 246, 0.2) 0%, transparent 70%); }
.temporal-glow { bottom: 5%; left: 15%; background: radial-gradient(circle, rgba(16, 185, 129, 0.2) 0%, transparent 70%); }
.thalamus-glow { top: 15%; left: 25%; background: radial-gradient(circle, rgba(245, 158, 11, 0.3) 0%, transparent 70%); }

/* ── Listening/Responding Shimmer ── */
.listening-particles {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle, rgba(255, 107, 53, 0.03) 0%, transparent 85%);
  animation: brain-shimmer 3s infinite alternate;
  z-index: 5;
}

@keyframes brain-shimmer {
  from { opacity: 0.1; transform: scale(1); }
  to { opacity: 0.3; transform: scale(1.05); }
}

@media (max-width: 768px) {
  .brain-core {
    max-width: 100% !important;
    height: auto !important;
    aspect-ratio: 1 / 1 !important;
  }
}

/* ── Mobile Responsive Overrides for iPhone 14 ── */
@media (max-width: 480px) {
  .brain-core {
    width: 240px !important;
    height: 240px !important;
    margin: 0 auto;
  }
  
  .signal-node {
    gap: 8px !important;
  }
  
  /* Bring offsets inward so they fit cleanly within the 390px iPhone 14 viewport */
  .prefrontal { top: -10px !important; left: -20px !important; }
  .parietal { top: -10px !important; right: -20px !important; }
  .temporal { bottom: 10px !important; left: -20px !important; }
  .thalamus-label { bottom: 10px !important; right: -20px !important; }
  
  .signal-copy strong {
    font-size: 0.58rem !important;
  }
  
  .signal-copy span {
    font-size: 0.48rem !important;
  }
  
  .glow-hub {
    width: 260px !important;
    height: 260px !important;
  }
}