:root {
  --sega-blue: #0060a8;
  --sega-red: #cc0000;
  --bg-dark: #0d0d1a;
  --bg-mid: #1a1a2e;
  --bg-light: #252540;
  --text-primary: #e0e0f0;
  --text-dim: #7a7a9a;
  --crt-green: #33ff66;
}

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

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

body::before {
  content: '';
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: 
    radial-gradient(ellipse at 20% 50%, rgba(0,96,168,0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(204,0,0,0.05) 0%, transparent 50%),
    linear-gradient(180deg, #0d0d1a 0%, #121228 50%, #0d0d1a 100%);
  pointer-events: none;
  z-index: -1;
}

.pixel-font { font-family: 'Press Start 2P', cursive; }
.mono-font { font-family: 'JetBrains Mono', monospace; }

/* Console Shell */
.console-body {
  background: linear-gradient(180deg, #2a2a2a 0%, #1a1a1a 30%, #222 70%, #1a1a1a 100%);
  border-radius: 16px;
  box-shadow: 
    0 20px 60px rgba(0,0,0,0.8),
    inset 0 1px 0 rgba(255,255,255,0.1),
    inset 0 -1px 0 rgba(0,0,0,0.5);
  position: relative;
  overflow: hidden;
}

.console-body::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 6px;
  background: linear-gradient(90deg, var(--sega-red) 0%, #ff2222 50%, var(--sega-red) 100%);
  box-shadow: 0 2px 10px rgba(204,0,0,0.5);
}

.screen-bezel {
  background: #0a0a0a;
  border-radius: 8px;
  box-shadow: 
    inset 0 4px 20px rgba(0,0,0,0.9),
    inset 0 0 0 2px #111,
    0 0 0 3px #333;
  position: relative;
  overflow: hidden;
}

.screen-bezel::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.03) 0%, transparent 50%);
  pointer-events: none;
  border-radius: 8px;
}

/* CRT Effect */
.crt-overlay {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  pointer-events: none;
  z-index: 10;
}

.crt-overlay.scanlines::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent 0px,
    transparent 1px,
    rgba(0,0,0,0.15) 1px,
    rgba(0,0,0,0.15) 2px
  );
  background-size: 100% 2px;
}

.crt-overlay.curve::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(ellipse at center, transparent 60%, rgba(0,0,0,0.4) 100%);
  border-radius: 8px;
}

/* Cartridge Slot */
.cart-slot {
  background: linear-gradient(180deg, #111 0%, #1a1a1a 50%, #111 100%);
  border: 2px solid #333;
  border-radius: 4px;
  box-shadow: inset 0 2px 8px rgba(0,0,0,0.8);
}

.cartridge {
  background: linear-gradient(180deg, #2a2a3a 0%, #1e1e2e 100%);
  border-radius: 4px 4px 0 0;
  border: 1px solid #3a3a4a;
  box-shadow: 0 -2px 8px rgba(0,0,0,0.5);
  transition: transform 0.3s ease;
}

.cartridge:hover {
  transform: translateY(-2px);
}

.cartridge-label {
  background: linear-gradient(135deg, #1a3a6a 0%, #0d2040 100%);
  border: 1px solid #2a4a7a;
  border-radius: 3px;
}

/* Buttons */
.power-btn {
  width: 40px; height: 40px;
  background: linear-gradient(180deg, #333 0%, #222 100%);
  border: 2px solid #444;
  border-radius: 50%;
  box-shadow: 0 3px 8px rgba(0,0,0,0.6), inset 0 1px 0 rgba(255,255,255,0.1);
  cursor: pointer;
  transition: all 0.1s;
  position: relative;
}

.power-btn:active, .power-btn.active {
  box-shadow: 0 1px 3px rgba(0,0,0,0.6), inset 0 2px 4px rgba(0,0,0,0.5);
  transform: translateY(1px);
}

.power-btn.active::after {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 8px; height: 8px;
  background: #33ff33;
  border-radius: 50%;
  box-shadow: 0 0 8px #33ff33;
}

.pause-btn {
  width: 30px; height: 30px;
  background: linear-gradient(180deg, #444 0%, #333 100%);
  border: 2px solid #555;
  border-radius: 4px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.5);
  cursor: pointer;
  transition: all 0.1s;
}

.pause-btn:active {
  box-shadow: 0 1px 2px rgba(0,0,0,0.5);
  transform: translateY(1px);
}

/* D-Pad */
.dpad-container {
  position: relative;
  width: 120px; height: 120px;
}

.dpad-center {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 40px; height: 40px;
  background: #2a2a2a;
  border-radius: 4px;
  z-index: 2;
}

.dpad-arm {
  position: absolute;
  background: linear-gradient(180deg, #3a3a3a 0%, #2a2a2a 100%);
  border: 1px solid #444;
  cursor: pointer;
  transition: all 0.05s;
  z-index: 1;
}

.dpad-arm:active, .dpad-arm.pressed {
  background: linear-gradient(180deg, #2a2a2a 0%, #1a1a1a 100%);
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.5);
}

.dpad-up {
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 40px; height: 45px;
  border-radius: 6px 6px 0 0;
}

.dpad-down {
  bottom: 0; left: 50%;
  transform: translateX(-50%);
  width: 40px; height: 45px;
  border-radius: 0 0 6px 6px;
}

.dpad-left {
  left: 0; top: 50%;
  transform: translateY(-50%);
  width: 45px; height: 40px;
  border-radius: 6px 0 0 6px;
}

.dpad-right {
  right: 0; top: 50%;
  transform: translateY(-50%);
  width: 45px; height: 40px;
  border-radius: 0 6px 6px 0;
}

/* Action Buttons */
.action-btn {
  width: 52px; height: 52px;
  background: linear-gradient(180deg, var(--sega-red) 0%, #990000 100%);
  border: 2px solid #dd2222;
  border-radius: 50%;
  box-shadow: 0 4px 8px rgba(0,0,0,0.6), inset 0 1px 0 rgba(255,255,255,0.2);
  cursor: pointer;
  transition: all 0.05s;
  color: white;
  font-family: 'Press Start 2P', cursive;
  font-size: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.action-btn:active, .action-btn.pressed {
  box-shadow: 0 1px 3px rgba(0,0,0,0.6), inset 0 2px 6px rgba(0,0,0,0.4);
  transform: translateY(2px);
}

/* Debug Panel */
.debug-panel {
  background: rgba(10,10,20,0.95);
  border: 1px solid #2a2a4a;
  border-radius: 8px;
  backdrop-filter: blur(8px);
}

.register-val {
  color: var(--crt-green);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
}

.register-label {
  color: var(--text-dim);
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: #3a3a5a; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #4a4a6a; }

/* Palette grid */
.palette-cell {
  width: 16px; height: 16px;
  border: 1px solid rgba(255,255,255,0.1);
  display: inline-block;
}

/* ROM loader drop zone */
.drop-zone {
  border: 2px dashed #3a3a5a;
  border-radius: 8px;
  transition: all 0.2s;
}

.drop-zone.drag-over {
  border-color: var(--sega-blue);
  background: rgba(0,96,168,0.1);
}

/* Status LED */
@keyframes pulse-green {
  0%, 100% { box-shadow: 0 0 4px #33ff33; }
  50% { box-shadow: 0 0 12px #33ff33; }
}

.led-on {
  animation: pulse-green 2s ease-in-out infinite;
}

/* Waveform canvas */
.waveform-canvas {
  background: #0a0a1a;
  border: 1px solid #2a2a3a;
  border-radius: 4px;
}

/* Tab styles */
.tab-btn {
  transition: all 0.15s;
}

.tab-btn.active-tab {
  background: var(--sega-blue);
  color: white;
}

/* Settings slider */
input[type="range"] {
  -webkit-appearance: none;
  background: #2a2a3a;
  height: 4px;
  border-radius: 2px;
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px; height: 14px;
  background: var(--sega-blue);
  border-radius: 50%;
  cursor: pointer;
}

/* Mobile responsive */
@media (max-width: 768px) {
  .console-body {
    border-radius: 8px;
  }
  
  .action-btn {
    width: 44px; height: 44px;
  }
}

/* Hex dump */
.hex-row {
  font-size: 10px;
  line-height: 1.6;
  letter-spacing: 0.5px;
}

.hex-addr { color: var(--sega-blue); }
.hex-byte { color: var(--text-primary); }
.hex-ascii { color: var(--text-dim); }