/* ==========================================================================
   SYNAPTIQ lab — Advanced AI & Applied Intelligent Systems Laboratory
   Aesthetics: Deep Space, Laser Matrix, Mathematical Precision & Neural Pulses
   Fonts: Space Grotesk (Titles), Inter (Body), Geist Mono (Code & Data)
   ========================================================================== */

:root {
  --bg-deep: #05070b;
  --bg-surface: #0a0e17;
  --bg-panel: rgba(13, 19, 31, 0.75);
  --bg-panel-hover: rgba(19, 27, 44, 0.9);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-active: rgba(0, 240, 255, 0.35);
  --border-neural: rgba(99, 102, 241, 0.3);
  
  --cyan-pulse: #00f0ff;
  --indigo-core: #6366f1;
  --emerald-live: #10b981;
  
  --text-pure: #ffffff;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', -apple-system, sans-serif;
  --font-mono: 'Geist Mono', monospace;
}

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

html {
  background-color: var(--bg-deep);
  color: var(--text-pure);
  font-family: var(--font-body);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  background-color: var(--bg-deep);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* Mathematical Grid Matrix Background */
.matrix-grid-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-size: 50px 50px;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  mask-image: radial-gradient(circle at 50% 30%, black 40%, transparent 85%);
  -webkit-mask-image: radial-gradient(circle at 50% 30%, black 40%, transparent 85%);
}

/* Deep Ambient Core Light */
.ambient-glow {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background: 
    radial-gradient(circle at 50% 0%, rgba(99, 102, 241, 0.16) 0%, transparent 60%),
    radial-gradient(circle at 80% 40%, rgba(0, 240, 255, 0.06) 0%, transparent 50%),
    radial-gradient(circle at 20% 70%, rgba(16, 185, 129, 0.04) 0%, transparent 50%);
}

/* Laboratory Glass Panel */
.lab-panel {
  background: var(--bg-panel);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--border-subtle);
  position: relative;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.lab-panel:hover {
  border-color: var(--border-neural);
  box-shadow: 0 10px 40px -10px rgba(99, 102, 241, 0.2);
}

/* Precision Crosshairs (+) */
.corner-cross {
  position: absolute;
  width: 9px;
  height: 9px;
  pointer-events: none;
  opacity: 0.4;
}
.corner-cross::before, .corner-cross::after {
  content: '';
  position: absolute;
  background: var(--cyan-pulse);
}
.corner-cross::before {
  top: 4px; left: 0; width: 9px; height: 1px;
}
.corner-cross::after {
  top: 0; left: 4px; width: 1px; height: 9px;
}
.corner-tl { top: -5px; left: -5px; }
.corner-tr { top: -5px; right: -5px; }
.corner-bl { bottom: -5px; left: -5px; }
.corner-br { bottom: -5px; right: -5px; }

/* Synaptic Pulsing Dot */
.synapse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan-pulse);
  box-shadow: 0 0 12px var(--cyan-pulse);
  display: inline-block;
  animation: pulse-synapse 2.4s infinite ease-in-out;
}

@keyframes pulse-synapse {
  0%, 100% { opacity: 1; transform: scale(1); filter: drop-shadow(0 0 8px var(--cyan-pulse)); }
  50% { opacity: 0.3; transform: scale(0.75); }
}

/* Interactive Canvas Layer */
#synaptic-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: auto;
  z-index: 1;
  opacity: 0.65;
}

/* Tech Buttons */
.btn-lab-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  background: #ffffff;
  color: #05070b;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  padding: 0.8rem 1.8rem;
  border-radius: 8px;
  transition: all 0.25s ease;
  box-shadow: 0 0 30px rgba(255, 255, 255, 0.25);
  text-decoration: none;
  cursor: pointer;
  text-transform: uppercase;
}

.btn-lab-primary:hover {
  background: #e2e8f0;
  box-shadow: 0 0 40px rgba(0, 240, 255, 0.4);
  transform: translateY(-2px);
}

.btn-lab-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  background: rgba(255, 255, 255, 0.04);
  color: #f1f5f9;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  padding: 0.8rem 1.8rem;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  transition: all 0.25s ease;
  text-decoration: none;
  cursor: pointer;
  text-transform: uppercase;
}

.btn-lab-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--cyan-pulse);
  color: #ffffff;
  transform: translateY(-2px);
}

/* Interactive Switcher */
.lab-toggle-wrap {
  display: inline-flex;
  padding: 4px;
  background: rgba(9, 13, 22, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  font-family: var(--font-mono);
}

.lab-toggle-btn {
  padding: 8px 18px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  cursor: pointer;
  border: none;
  background: transparent;
  color: var(--text-muted);
  transition: all 0.2s ease;
}

.lab-toggle-btn.active {
  background: var(--cyan-pulse);
  color: #05070b;
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.35);
}

/* Micro Noise Texture */
.noise-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.02;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}