:root {
  --neon-cyan: #00ff88;
  --neon-magenta: #ff0080;
  --neon-teal: #00ffff;
  --bg-dark: #000;
  --bg-mid: #111;
  --text-main: #ccc;
  --glow-cyan: 0 0 20px var(--neon-cyan);
  --glow-magenta: 0 0 20px var(--neon-magenta);
  --glow-teal: 0 0 20px var(--neon-teal);
  --transition: 0.3s ease;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: linear-gradient(180deg, var(--bg-dark), var(--bg-mid));
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(0,0,0,0.8);
  backdrop-filter: blur(10px);
}

.logo {
  margin: 0;
  font-size: 1.8rem;
  background: linear-gradient(45deg, var(--neon-cyan), var(--neon-teal));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: var(--glow-cyan);
}

nav ul {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
}

nav li {
  margin-left: 2rem;
}

nav a {
  color: var(--text-main);
  text-decoration: none;
  transition: var(--transition);
}

nav a:hover {
  color: var(--neon-cyan);
  text-shadow: var(--glow-cyan);
}

nav a.active {
  color: var(--neon-cyan);
  text-shadow: var(--glow-cyan);
}

#hero {
  position: relative;
  height: 100vh;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

#particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
  margin: 0 auto;
  padding: 0 2rem;
  text-align: center;
  color: white;
}

.hero-content h1 {
  font-size: clamp(2rem, 5vw, 4rem);
  margin-bottom: 1rem;
  text-shadow: var(--glow-teal);
}

.cta {
  display: inline-block;
  background: var(--neon-magenta);
  color: #000;
  padding: 1rem 2rem;
  border-radius: 50px;
  text-decoration: none;
  font-weight: bold;
  transition: var(--transition);
  box-shadow: var(--glow-magenta);
  border: none;
  cursor: pointer;
}

.cta:hover {
  transform: scale(1.05);
  box-shadow: 0 0 30px var(--neon-magenta);
}

.install-prompt {
  background: var(--neon-teal) !important;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.card {
  background: rgba(17,17,17,0.8);
  padding: 2rem;
  border-radius: 16px;
  text-align: center;
  transition: var(--transition);
  box-shadow: var(--glow-cyan);
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: var(--glow-teal);
}

.card h3 {
  color: var(--neon-cyan);
  margin-bottom: 1rem;
}

.card a {
  display: inline-block;
  margin-top: 1rem;
  color: var(--neon-teal);
  text-decoration: none;
}

.thumb-canvas {
  width: 80px;
  height: 48px;
  border-radius: 8px;
  border: 1px solid rgba(0,255,136,0.3);
  box-shadow: var(--glow-cyan);
  margin: 1rem auto;
  display: block;
}

.card:hover .thumb-canvas {
  box-shadow: var(--glow-teal);
  transform: scale(1.1);
}

@media (max-width: 768px) {
  .thumb-canvas {
    width: 60px;
    height: 36px;
  }
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px,1fr));
  gap: 2rem;
  max-width: 1400px;
  margin: 4rem auto;
  padding: 0 2rem;
}

.snap-container {
  background: rgba(17,17,17,0.8);
  padding: 1.5rem;
  border-radius: 16px;
  text-align: center;
  box-shadow: var(--glow-cyan);
  transition: var(--transition);
}

.snap-container:hover {
  box-shadow: var(--glow-teal);
  transform: translateY(-8px);
}

.snap-canvas {
  width: 120px;
  height: 120px;
  border-radius: 12px;
  border: 2px solid rgba(0,255,136,0.4);
  box-shadow: var(--glow-cyan);
  margin: 0 auto 1rem;
  display: block;
  image-rendering: pixelated;
}

.export-png {
  background: var(--neon-magenta);
  color: #000;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  cursor: pointer;
  font-weight: bold;
  transition: var(--transition);
}

.export-png:hover {
  box-shadow: var(--glow-magenta);
  transform: scale(1.05);
}

#regen-snaps {
  background: var(--neon-teal);
}

@media(max-width:768px){
  .gallery-grid {
    grid-template-columns: repeat(auto-fit,minmax(200px,1fr));
  }
  .snap-canvas {
    width:100px;
    height:100px;
  }
}

footer {
  text-align: center;
  padding: 2rem;
  opacity: 0.7;
}

.status {
  margin-top: 1rem;
  font-family: monospace;
  color: var(--neon-cyan);
}

.share-container {
  margin-top: 1rem;
}

.share-btn {
  background: var(--neon-teal);
  color: #000;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  cursor: pointer;
  font-weight: bold;
}

.share-btn:hover {
  box-shadow: var(--glow-teal);
}

.ar-container {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

.protag-canvas {
  width: 100%;
  height: 480px;
  max-height: 60vh;
  border-radius: 16px;
  box-shadow: var(--glow-teal);
  border: 2px solid rgba(0,255,136,0.5);
}

.controls {
  margin-top: 1rem;
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.controls button, .controls label {
  background: var(--neon-magenta);
  color: #000;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-weight: bold;
  cursor: pointer;
}

.controls input[type="range"] {
  width: 120px;
}

@media (max-width: 768px) {
  .protag-canvas { height: 50vh; }
}

.expt-progress { display: flex; align-items: center; gap: 1rem; margin: 2rem 0; font-family: monospace; font-size: 1.2rem; color: #ccc; }
.expt-label { font-weight: bold; text-shadow: 0 0 10px #ff00ff; }
.expt-bar { flex: 1; height: 8px; background: rgba(255,255,255,0.1); border-radius: 4px; overflow: hidden; box-shadow: 0 0 20px rgba(255,0,255,0.3); }
.expt-fill { height: 100%; transition: width 0.3s ease; box-shadow: 0 0 15px #ff00ff; }

#sim-canvas { cursor: crosshair; }
#sim-canvas:hover { box-shadow: 0 0 40px var(--neon-teal); }
.controls label { display: flex; align-items: center; gap: 0.5rem; background: rgba(255,0,128,0.2); padding: 0.75rem; border-radius: 12px; }
#sim-status { font-family: monospace; padding: 1rem; background: rgba(0,0,0,0.5); border-radius: 8px; margin-top: 1rem; }
@media (max-width: 768px) { #protag-sim-container .controls { flex-direction: column; } }

.arena-layout { display: flex; gap: 2rem; max-width: 1200px; margin: 2rem auto; }
.protag-side { flex: 1; text-align: center; }
.protag-side.left { border-right: 2px solid rgba(0,255,136,0.3); padding-right: 1rem; }
.protag-side.right { padding-left: 1rem; }
.protag-side h4 { color: var(--neon-cyan); margin-bottom: 1rem; text-shadow: var(--glow-cyan); }
.center-controls { text-align: center; margin-top: 2rem; }
#arena-status, #arena-opponent-stats { font-family: monospace; color: var(--neon-magenta); font-size: 1.1rem; }
@media (max-width: 768px) {
  .arena-layout { flex-direction: column; }
  .protag-side.left { border-right: none; border-bottom: 2px solid rgba(0,255,136,0.3); padding-bottom: 1rem; padding-right: 0; }
  .protag-canvas { height: 40vh !important; }
}