:root {
  --bg-deep: #0a0612;
  --bg-panel: #130d1f;
  --bg-control: #1a1230;
  --neon-cyan: #00f5d4;
  --neon-magenta: #f72585;
  --neon-green: #39ff14;
  --neon-yellow: #ffe66d;
  --neon-orange: #ff6b35;
  --text-dim: #6b6187;
  --text-mid: #a89cc8;
  --text-bright: #e8e0f0;
}

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

body {
  background: var(--bg-deep);
  color: var(--text-bright);
  font-family: 'JetBrains Mono', monospace;
  overflow-x: hidden;
  min-height: 100vh;
}

#root {
  min-height: 100vh;
}

/* Custom scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-deep); }
::-webkit-scrollbar-thumb { background: #2a1f45; border-radius: 3px; }

/* Slider styling */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  background: transparent;
  cursor: pointer;
  width: 100%;
}

input[type="range"]::-webkit-slider-track {
  height: 6px;
  border-radius: 3px;
  background: #1a1230;
  border: 1px solid #2a1f45;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  height: 20px;
  width: 20px;
  border-radius: 50%;
  background: var(--neon-cyan);
  margin-top: -7px;
  box-shadow: 0 0 10px var(--neon-cyan), 0 0 20px rgba(0, 245, 212, 0.3);
  transition: box-shadow 0.2s;
}

input[type="range"]::-webkit-slider-thumb:hover {
  box-shadow: 0 0 15px var(--neon-cyan), 0 0 30px rgba(0, 245, 212, 0.5);
}

input[type="range"]::-moz-range-track {
  height: 6px;
  border-radius: 3px;
  background: #1a1230;
  border: 1px solid #2a1f45;
}

input[type="range"]::-moz-range-thumb {
  height: 20px;
  width: 20px;
  border-radius: 50%;
  background: var(--neon-cyan);
  border: none;
  box-shadow: 0 0 10px var(--neon-cyan), 0 0 20px rgba(0, 245, 212, 0.3);
}

/* Magenta slider variant */
.slider-magenta::-webkit-slider-thumb {
  background: var(--neon-magenta) !important;
  box-shadow: 0 0 10px var(--neon-magenta), 0 0 20px rgba(247, 37, 133, 0.3) !important;
}
.slider-magenta::-moz-range-thumb {
  background: var(--neon-magenta) !important;
  box-shadow: 0 0 10px var(--neon-magenta), 0 0 20px rgba(247, 37, 133, 0.3) !important;
}

/* Green slider variant */
.slider-green::-webkit-slider-thumb {
  background: var(--neon-green) !important;
  box-shadow: 0 0 10px var(--neon-green), 0 0 20px rgba(57, 255, 20, 0.3) !important;
}
.slider-green::-moz-range-thumb {
  background: var(--neon-green) !important;
  box-shadow: 0 0 10px var(--neon-green), 0 0 20px rgba(57, 255, 20, 0.3) !important;
}

/* Orange slider variant */
.slider-orange::-webkit-slider-thumb {
  background: var(--neon-orange) !important;
  box-shadow: 0 0 10px var(--neon-orange), 0 0 20px rgba(255, 107, 53, 0.3) !important;
}
.slider-orange::-moz-range-thumb {
  background: var(--neon-orange) !important;
  box-shadow: 0 0 10px var(--neon-orange), 0 0 20px rgba(255, 107, 53, 0.3) !important;
}

/* Glow text */
.glow-cyan { text-shadow: 0 0 10px var(--neon-cyan), 0 0 40px rgba(0,245,212,0.3); }
.glow-magenta { text-shadow: 0 0 10px var(--neon-magenta), 0 0 40px rgba(247,37,133,0.3); }
.glow-green { text-shadow: 0 0 10px var(--neon-green), 0 0 40px rgba(57,255,20,0.3); }

/* Panel glow */
.panel {
  background: var(--bg-panel);
  border: 1px solid #2a1f45;
  border-radius: 12px;
  transition: border-color 0.3s;
}

.panel:hover {
  border-color: #3a2f55;
}

/* Waveform button */
.wave-btn {
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 11px;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  border: 1px solid #2a1f45;
  background: var(--bg-control);
  color: var(--text-dim);
  cursor: pointer;
  transition: all 0.2s;
}

.wave-btn:hover {
  border-color: var(--neon-cyan);
  color: var(--text-mid);
}

.wave-btn.active {
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
  background: rgba(0, 245, 212, 0.08);
  box-shadow: 0 0 10px rgba(0, 245, 212, 0.2), inset 0 0 10px rgba(0, 245, 212, 0.05);
}

.wave-btn-mod.active {
  border-color: var(--neon-magenta) !important;
  color: var(--neon-magenta) !important;
  background: rgba(247, 37, 133, 0.08) !important;
  box-shadow: 0 0 10px rgba(247, 37, 133, 0.2), inset 0 0 10px rgba(247, 37, 133, 0.05) !important;
}

/* Preset button */
.preset-btn {
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 11px;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 400;
  border: 1px solid #2a1f45;
  background: var(--bg-control);
  color: var(--text-dim);
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.preset-btn:hover {
  border-color: var(--neon-yellow);
  color: var(--neon-yellow);
  box-shadow: 0 0 8px rgba(255, 230, 109, 0.15);
}

/* Play button */
.play-btn {
  font-family: 'Orbitron', sans-serif;
  font-weight: 900;
  letter-spacing: 3px;
  transition: all 0.15s;
}

.play-btn:active {
  transform: scale(0.96);
}

/* Piano key */
.piano-white {
  background: linear-gradient(180deg, #f0eef5 0%, #d8d4e2 100%);
  border: 1px solid #a89cc8;
  border-radius: 0 0 6px 6px;
  cursor: pointer;
  transition: all 0.08s;
  position: relative;
}

.piano-white:hover { background: linear-gradient(180deg, #e8e4f0 0%, #ccc6d8 100%); }
.piano-white.pressed {
  background: linear-gradient(180deg, var(--neon-cyan) 0%, #00c4aa 100%);
  box-shadow: 0 0 15px rgba(0,245,212,0.4);
}

.piano-black {
  background: linear-gradient(180deg, #1a1230 0%, #0a0612 100%);
  border: 1px solid #2a1f45;
  border-radius: 0 0 4px 4px;
  cursor: pointer;
  transition: all 0.08s;
  z-index: 2;
  position: absolute;
}

.piano-black:hover { background: linear-gradient(180deg, #2a1f45 0%, #130d1f 100%); }
.piano-black.pressed {
  background: linear-gradient(180deg, var(--neon-magenta) 0%, #c41e6a 100%);
  box-shadow: 0 0 15px rgba(247,37,133,0.4);
}

/* Canvas CRT effect */
.crt-canvas {
  border-radius: 8px;
  box-shadow: 0 0 20px rgba(0, 245, 212, 0.1), inset 0 0 60px rgba(0, 0, 0, 0.5);
}

/* Scanline overlay */
.scanlines {
  pointer-events: none;
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.08) 2px,
    rgba(0, 0, 0, 0.08) 4px
  );
  border-radius: 8px;
}

/* ADSR canvas */
.adsr-canvas {
  border-radius: 6px;
  border: 1px solid #2a1f45;
}

/* Animations */
@keyframes pulse-glow {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}

.animate-pulse-glow {
  animation: pulse-glow 2s ease-in-out infinite;
}

/* Help panel */
.help-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.help-content.open {
  max-height: 300px;
}

/* Responsive */
@media (max-width: 768px) {
  .wave-btn { padding: 5px 10px; font-size: 10px; }
  .preset-btn { padding: 4px 8px; font-size: 10px; }
}