:root {
  --bg-deep: #0a0612;
  --bg-card: rgba(18, 10, 36, 0.75);
  --border-glow: rgba(120, 60, 255, 0.25);
  --accent-violet: #9333ea;
  --accent-cyan: #06d6a0;
  --accent-magenta: #e040fb;
  --accent-blue: #3b82f6;
  --text-primary: #e8e0f0;
  --text-muted: #8878a9;
}

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

body {
  background: var(--bg-deep);
  color: var(--text-primary);
  font-family: 'Bricolage Grotesque', sans-serif;
  min-height: 100vh;
  overflow-x: hidden;
}

.font-mono { font-family: 'JetBrains Mono', monospace; }

.glass-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  backdrop-filter: blur(16px);
  border-radius: 16px;
}

.glow-btn {
  background: linear-gradient(135deg, var(--accent-violet), var(--accent-magenta));
  border: none;
  border-radius: 12px;
  color: white;
  font-weight: 700;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}

.glow-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(147, 51, 234, 0.5), 0 0 60px rgba(224, 64, 251, 0.2);
}

.glow-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  filter: grayscale(0.5);
}

.glow-btn::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: conic-gradient(transparent, rgba(255,255,255,0.1), transparent 30%);
  animation: btnSpin 4s linear infinite;
}

@keyframes btnSpin {
  100% { transform: rotate(360deg); }
}

.upload-zone {
  border: 2px dashed rgba(147, 51, 234, 0.4);
  border-radius: 16px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.upload-zone:hover, .upload-zone.drag-over {
  border-color: var(--accent-cyan);
  background: rgba(6, 214, 160, 0.05);
  box-shadow: inset 0 0 40px rgba(6, 214, 160, 0.05);
}

.upload-zone::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(147, 51, 234, 0.03) 0%, transparent 70%);
  animation: uploadPulse 3s ease-in-out infinite;
}

@keyframes uploadPulse {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}

.pixel-canvas {
  image-rendering: pixelated;
  image-rendering: -moz-crisp-edges;
  image-rendering: crisp-edges;
}

.header-bg {
  background: linear-gradient(135deg, #0a0612 0%, #1a0a3e 30%, #0d1b2a 60%, #0a0612 100%);
  position: relative;
  overflow: hidden;
}

.header-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  animation: noiseShift 0.5s steps(3) infinite;
  pointer-events: none;
}

@keyframes noiseShift {
  0% { transform: translate(0, 0); }
  33% { transform: translate(-5px, 3px); }
  66% { transform: translate(3px, -5px); }
  100% { transform: translate(0, 0); }
}

.loss-chart-container {
  background: rgba(0,0,0,0.3);
  border: 1px solid rgba(147, 51, 234, 0.2);
  border-radius: 8px;
}

.slider-custom {
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--accent-violet), var(--accent-cyan));
  outline: none;
}

.slider-custom::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: white;
  cursor: pointer;
  box-shadow: 0 0 10px rgba(147, 51, 234, 0.5);
}

.progress-bar-track {
  background: rgba(255,255,255,0.05);
  border-radius: 8px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-violet), var(--accent-cyan), var(--accent-magenta));
  background-size: 200% 100%;
  animation: progressShimmer 2s linear infinite;
  border-radius: 8px;
  transition: width 0.3s ease;
}

@keyframes progressShimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.network-node {
  fill: var(--accent-cyan);
  filter: drop-shadow(0 0 4px rgba(6, 214, 160, 0.5));
}

.network-link {
  stroke: rgba(147, 51, 234, 0.3);
  stroke-width: 1;
}

.step-thumbnail {
  border: 1px solid rgba(147, 51, 234, 0.3);
  border-radius: 4px;
  transition: all 0.3s;
}

.step-thumbnail.active {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 12px rgba(6, 214, 160, 0.3);
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-in {
  animation: fadeInUp 0.5s ease-out forwards;
}

.collapsible-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s ease;
}

.collapsible-content.open {
  max-height: 2000px;
}

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-deep); }
::-webkit-scrollbar-thumb { background: var(--accent-violet); border-radius: 4px; }