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

:root {
  --bg: #0f0f1a;
  --bg2: #1a1a2e;
  --bg3: #16213e;
  --gb-green: #9bbc0f;
  --gb-green-dark: #306230;
  --gb-light: #8bac0f;
  --magenta: #ff006e;
  --magenta-dim: #aa0048;
  --text: #e0e0e0;
  --text-dim: #888;
  --bezel: #bbb8a8;
  --bezel-dark: #8b8878;
  --screen-bg: #9bbc0f;
}

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

#app {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
}

#main-container {
  display: flex;
  gap: 20px;
  padding: 20px;
  max-width: 1200px;
  width: 100%;
  justify-content: center;
}

#screen-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

#bezel {
  background: linear-gradient(135deg, #c8c4b8 0%, #a8a498 50%, #c0bcb0 100%);
  border-radius: 18px 18px 50px 18px;
  padding: 20px 24px 30px;
  box-shadow: 
    0 4px 20px rgba(0,0,0,0.5),
    inset 0 1px 0 rgba(255,255,255,0.3),
    inset 0 -2px 4px rgba(0,0,0,0.2);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

#bezel-top-text {
  font-family: 'Press Start 2P', monospace;
  font-size: 6px;
  color: var(--bezel-dark);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 2px;
}

#screen-wrapper {
  position: relative;
  width: 480px;
  height: 432px;
  background: #2d3a0e;
  border-radius: 8px;
  overflow: hidden;
  box-shadow:
    inset 0 0 30px rgba(0,0,0,0.6),
    inset 0 0 6px rgba(0,0,0,0.8);
  border: 3px solid #555;
}

#canvas {
  width: 480px;
  height: 432px;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  display: block;
}

#scanlines {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0,0,0,0.08) 2px,
    rgba(0,0,0,0.08) 4px
  );
  pointer-events: none;
  border-radius: 8px;
}

#screen-wrapper::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(ellipse at center, transparent 60%, rgba(0,0,0,0.25) 100%);
  pointer-events: none;
}

#power-led {
  align-self: flex-start;
  font-size: 8px;
  color: var(--bezel-dark);
  display: flex;
  align-items: center;
  gap: 4px;
  margin-top: 4px;
}

#led-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #444;
  display: inline-block;
  transition: background 0.3s;
}

#led-dot.on {
  background: #e33;
  box-shadow: 0 0 6px #f44;
}

#status-bar {
  display: flex;
  gap: 16px;
  font-size: 11px;
  color: var(--text-dim);
  background: var(--bg2);
  padding: 6px 14px;
  border-radius: 6px;
  width: 480px;
  justify-content: space-between;
}

#controls-bar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
}

#upload-btn {
  background: linear-gradient(135deg, var(--bg3), var(--bg2));
  border: 2px dashed var(--gb-green);
  color: var(--gb-green);
  padding: 10px 18px;
  border-radius: 8px;
  cursor: pointer;
  font-family: 'Press Start 2P', monospace;
  font-size: 9px;
  transition: all 0.2s;
  text-align: center;
}

#upload-btn:hover {
  background: var(--gb-green-dark);
  border-style: solid;
}

#rom-input { display: none; }

#controls-bar button, #controls-bar select {
  background: var(--bg3);
  color: var(--text);
  border: 1px solid #333;
  padding: 8px 12px;
  border-radius: 6px;
  cursor: pointer;
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  transition: all 0.15s;
}

#controls-bar button:hover:not(:disabled) {
  background: var(--gb-green-dark);
  border-color: var(--gb-green);
}

#controls-bar button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

#controls-bar select {
  font-size: 12px;
}

/* Touch Controls */
#touch-controls {
  display: none;
  width: 100%;
  padding: 10px 0;
  justify-content: space-between;
  align-items: center;
}

#touch-dpad {
  display: grid;
  grid-template-columns: 50px 50px 50px;
  grid-template-rows: 50px 50px 50px;
  gap: 2px;
}

.dpad-btn {
  background: rgba(30,30,50,0.8);
  border: 1px solid #444;
  color: var(--text);
  font-size: 16px;
  border-radius: 4px;
  touch-action: manipulation;
  -webkit-user-select: none;
  user-select: none;
}

.dpad-btn:active {
  background: rgba(155,188,15,0.3);
  border-color: var(--gb-green);
}

.dpad-center { background: rgba(20,20,40,0.5); border: none; }
.dpad-up { grid-column: 2; grid-row: 1; }
.dpad-left { grid-column: 1; grid-row: 2; }
.dpad-center { grid-column: 2; grid-row: 2; }
.dpad-right { grid-column: 3; grid-row: 2; }
.dpad-down { grid-column: 2; grid-row: 3; }

#touch-buttons-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

#touch-ab {
  display: flex;
  gap: 12px;
}

.action-btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(155,16,80,0.7);
  border: 2px solid var(--magenta);
  color: #fff;
  font-family: 'Press Start 2P', monospace;
  font-size: 11px;
  touch-action: manipulation;
  -webkit-user-select: none;
  user-select: none;
}

.action-btn:active {
  background: rgba(255,0,110,0.5);
}

#touch-startsel {
  display: flex;
  gap: 10px;
}

.small-btn {
  padding: 6px 12px;
  border-radius: 10px;
  background: rgba(40,40,60,0.8);
  border: 1px solid #555;
  color: var(--text-dim);
  font-family: 'Press Start 2P', monospace;
  font-size: 7px;
  touch-action: manipulation;
  -webkit-user-select: none;
  user-select: none;
}

.small-btn:active {
  background: rgba(155,188,15,0.2);
  border-color: var(--gb-green);
}

/* Sidebar */
#sidebar {
  width: 280px;
  background: var(--bg2);
  border-radius: 10px;
  border: 1px solid #2a2a4a;
  overflow: hidden;
  flex-shrink: 0;
  max-height: 700px;
  display: flex;
  flex-direction: column;
}

#sidebar-toggle {
  background: linear-gradient(90deg, var(--magenta-dim), var(--magenta));
  color: #fff;
  padding: 12px 16px;
  font-family: 'Press Start 2P', monospace;
  font-size: 10px;
  cursor: pointer;
  text-align: center;
  letter-spacing: 1px;
}

#sidebar-toggle:hover {
  filter: brightness(1.15);
}

#sidebar-content {
  padding: 12px;
  overflow-y: auto;
  flex: 1;
}

.panel-section {
  margin-bottom: 12px;
}

.panel-section label {
  font-size: 10px;
  color: var(--gb-green);
  text-transform: uppercase;
  letter-spacing: 1px;
  display: block;
  margin-bottom: 4px;
}

.panel-section select,
.panel-section input[type="text"] {
  width: 100%;
  background: var(--bg);
  color: var(--text);
  border: 1px solid #333;
  padding: 6px 8px;
  border-radius: 4px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
}

.panel-section select:focus,
.panel-section input[type="text"]:focus {
  outline: none;
  border-color: var(--magenta);
}

.hex-range {
  display: flex;
  gap: 6px;
  align-items: center;
}

.hex-range input { text-align: center; }
.hex-range span { color: var(--text-dim); }

.panel-section input[type="range"] {
  width: 100%;
  accent-color: var(--magenta);
}

.corrupt-btn {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, #cc0058, #ff006e);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-family: 'Press Start 2P', monospace;
  font-size: 11px;
  cursor: pointer;
  transition: all 0.15s;
  text-shadow: 0 1px 4px rgba(0,0,0,0.5);
}

.corrupt-btn:hover {
  transform: scale(1.03);
  box-shadow: 0 0 20px rgba(255,0,110,0.5);
}

.corrupt-btn:active {
  transform: scale(0.97);
}

.corrupt-btn.flash {
  animation: corruptFlash 0.3s;
}

@keyframes corruptFlash {
  0% { box-shadow: 0 0 0 rgba(255,0,110,0); }
  50% { box-shadow: 0 0 40px rgba(255,0,110,0.8); }
  100% { box-shadow: 0 0 0 rgba(255,0,110,0); }
}

.toggle-label {
  display: flex !important;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}

.toggle-label input[type="checkbox"] {
  accent-color: var(--magenta);
  width: 16px;
  height: 16px;
}

.auto-interval {
  margin-top: 6px;
}

.reset-rom-btn {
  width: 100%;
  padding: 8px;
  background: var(--bg3);
  color: var(--gb-green);
  border: 1px solid var(--gb-green-dark);
  border-radius: 6px;
  cursor: pointer;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
}

.reset-rom-btn:hover {
  background: var(--gb-green-dark);
  color: #fff;
}

#corrupt-log {
  background: #0a0a14;
  border: 1px solid #222;
  border-radius: 4px;
  height: 120px;
  overflow-y: auto;
  padding: 6px;
  font-size: 9px;
  color: var(--magenta);
  line-height: 1.5;
}

/* Debug overlay */
#debug-overlay {
  position: fixed;
  top: 10px;
  left: 10px;
  background: rgba(0,0,0,0.85);
  color: var(--gb-green);
  padding: 10px;
  border-radius: 6px;
  font-size: 10px;
  z-index: 100;
  pointer-events: none;
  border: 1px solid var(--gb-green-dark);
}

#debug-overlay.hidden { display: none; }

/* Toast */
#toast {
  position: fixed;
  bottom: 60px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--magenta);
  color: #fff;
  padding: 10px 20px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  z-index: 200;
  transition: opacity 0.3s;
  white-space: nowrap;
}

#toast.hidden { opacity: 0; pointer-events: none; }

/* Keyboard ref */
#keyboard-ref {
  width: 480px;
  margin-top: 6px;
}

#keyboard-ref details {
  background: var(--bg2);
  border-radius: 6px;
  padding: 8px 12px;
}

#keyboard-ref summary {
  cursor: pointer;
  font-size: 11px;
  color: var(--text-dim);
}

.key-grid {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 4px 12px;
  margin-top: 6px;
  font-size: 11px;
}

.key-grid span:nth-child(odd) {
  color: var(--gb-green);
  font-weight: 600;
}

footer {
  margin-top: 20px;
  padding: 16px;
  font-size: 11px;
  color: var(--text-dim);
  text-align: center;
}

footer a {
  color: var(--gb-green);
  text-decoration: none;
}

footer a:hover { text-decoration: underline; }

/* Mobile */
@media (max-width: 800px) {
  #main-container {
    flex-direction: column;
    align-items: center;
    padding: 10px;
  }

  #sidebar {
    width: 100%;
    max-height: none;
  }

  #screen-wrapper, #canvas {
    width: 320px;
    height: 288px;
  }

  #bezel {
    padding: 12px 14px 20px;
  }

  #status-bar {
    width: 320px;
    font-size: 9px;
  }

  #keyboard-ref {
    width: 320px;
  }

  #touch-controls {
    display: flex;
  }

  #controls-bar {
    font-size: 11px;
  }
}

@media (max-width: 400px) {
  #screen-wrapper, #canvas {
    width: 280px;
    height: 252px;
  }
  #status-bar { width: 280px; }
  #keyboard-ref { width: 280px; }
}