:root {
  --bg: #0a0512;
  --neon-mag: #ff2fd0;
  --neon-cyan: #00f0ff;
  --neon-lime: #a3ff00;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: 'Bricolage Grotesque', system-ui, sans-serif;
  background: var(--bg);
  background-image:
    radial-gradient(circle at 15% 0%, rgba(255,47,208,0.18), transparent 45%),
    radial-gradient(circle at 85% 20%, rgba(0,240,255,0.14), transparent 45%),
    radial-gradient(circle at 50% 100%, rgba(163,255,0,0.08), transparent 55%);
  background-attachment: fixed;
  color: #f1f5f9;
}
.header-grad {
  background: linear-gradient(90deg, rgba(58,10,94,0.92), rgba(120,10,90,0.9));
}
.title-glitch {
  background: linear-gradient(90deg, #a3ff00, #00f0ff, #ff2fd0);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 24px rgba(255,47,208,0.4);
  animation: shimmer 4s linear infinite;
  background-size: 200% auto;
}
@keyframes shimmer { to { background-position: 200% center; } }

.panel {
  background: rgba(20, 10, 30, 0.6);
  border: 1px solid rgba(255,47,208,0.25);
  backdrop-filter: blur(8px);
}
.drop-zone {
  background: rgba(20,10,30,0.5);
  border: 2px dashed rgba(0,240,255,0.5);
  transition: all 0.2s;
  max-width: 640px;
  margin: 3rem auto;
}
.drop-zone.drag-over {
  border-color: var(--neon-lime);
  background: rgba(163,255,0,0.08);
  transform: scale(1.01);
}
.neon-btn {
  background: rgba(0,240,255,0.15);
  border: 1px solid rgba(0,240,255,0.5);
  color: #a5f3fc;
  box-shadow: 0 0 12px rgba(0,240,255,0.2);
}
.neon-btn:hover { box-shadow: 0 0 20px rgba(0,240,255,0.5); }
.big-btn {
  background: linear-gradient(90deg, var(--neon-lime), var(--neon-cyan));
  font-weight: 800;
  box-shadow: 0 0 18px rgba(163,255,0,0.4);
}
.big-btn:hover { filter: brightness(1.1); box-shadow: 0 0 28px rgba(163,255,0,0.6); }

input[type=range] { cursor: pointer; }
::-webkit-scrollbar { height: 8px; width: 8px; }
::-webkit-scrollbar-thumb { background: rgba(255,47,208,0.4); border-radius: 4px; }
::-webkit-scrollbar-track { background: transparent; }