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

:root {
  --green: #00ff41;
  --green-dim: #00aa2a;
  --green-dark: #004d15;
  --amber: #ffb000;
  --red: #ff2442;
  --cyan: #00e5ff;
  --cyan-dim: #007a8a;
  --bg: #0a0a0a;
  --bg-panel: #111111;
  --bg-input: #1a1a1a;
  --border: #222;
  --text: #cccccc;
  --glow: 0 0 10px rgba(0, 255, 65, 0.3);
  --glow-strong: 0 0 20px rgba(0, 255, 65, 0.5), 0 0 40px rgba(0, 255, 65, 0.2);
  --glow-cyan: 0 0 10px rgba(0, 229, 255, 0.3);
  --glow-cyan-strong: 0 0 20px rgba(0, 229, 255, 0.5), 0 0 40px rgba(0, 229, 255, 0.2);
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'VT323', 'Courier New', monospace;
  font-size: 16px;
  min-height: 100vh;
  overflow-x: hidden;
}

#app {
  max-width: 1200px;
  margin: 0 auto;
  padding: 10px;
}

/* Header */
header {
  text-align: center;
  padding: 15px 10px;
  border-bottom: 2px solid var(--green-dark);
  margin-bottom: 20px;
  position: relative;
}

header h1 {
  font-family: 'Press Start 2P', monospace;
  font-size: clamp(10px, 2.5vw, 18px);
  color: var(--green);
  text-shadow: var(--glow);
  letter-spacing: 2px;
  line-height: 1.5;
}

header .dash { color: var(--amber); }

header .subtitle {
  font-family: 'Press Start 2P', monospace;
  font-size: clamp(6px, 1.3vw, 9px);
  color: var(--amber);
  text-shadow: 0 0 8px rgba(255, 176, 0, 0.4);
  margin-top: 6px;
  letter-spacing: 1px;
}

header .subtitle .sep { color: var(--cyan); margin: 0 4px; }

.badges {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 8px;
  flex-wrap: wrap;
}

.badge {
  font-size: 11px;
  color: var(--green-dim);
  font-family: 'VT323', monospace;
}

.wat-badge {
  color: var(--cyan);
  background: rgba(0,229,255,0.08);
  border: 1px solid var(--cyan-dim);
  padding: 1px 8px;
  border-radius: 3px;
  font-size: 10px;
  text-shadow: var(--glow-cyan);
  animation: wat-glow 3s ease-in-out infinite;
}

@keyframes wat-glow {
  0%, 100% { box-shadow: 0 0 4px rgba(0,229,255,0.2); }
  50% { box-shadow: 0 0 12px rgba(0,229,255,0.5); }
}

/* WABT Status Panel */
#wabt-status-panel {
  background: var(--bg-panel);
  border: 1px solid var(--cyan-dim);
  border-radius: 6px;
  padding: 12px 16px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  width: 100%;
  max-width: 700px;
  margin: 0 auto 16px auto;
  box-shadow: var(--glow-cyan);
}

#wabt-status-panel.success {
  border-color: var(--green);
  box-shadow: var(--glow);
}

#wabt-status-panel.error {
  border-color: var(--red);
  box-shadow: 0 0 10px rgba(255,36,66,0.3);
}

#wabt-status-icon {
  font-size: 24px;
  min-width: 32px;
  text-align: center;
  flex-shrink: 0;
}

#wabt-status-content {
  min-width: 0;
  flex: 1;
}

#wabt-status-text {
  font-family: 'Press Start 2P', monospace;
  font-size: 9px;
  color: var(--cyan);
  line-height: 1.4;
  word-break: break-word;
}

#wabt-status-panel.success #wabt-status-text { color: var(--green); }
#wabt-status-panel.error #wabt-status-text { color: var(--red); }

#wabt-status-detail {
  font-family: 'VT323', monospace;
  font-size: 12px;
  color: var(--cyan-dim);
  word-break: break-word;
  overflow-wrap: break-word;
  margin-top: 4px;
}

#wabt-status-panel.hidden { display: none; }

/* Main Layout */
#main-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

/* ROM Panel */
#rom-panel {
  background: var(--bg-panel);
  border: 2px solid var(--green-dark);
  border-radius: 8px;
  padding: 20px;
  width: 100%;
  max-width: 700px;
  box-shadow: var(--glow);
}

#rom-panel h2 {
  font-family: 'Press Start 2P', monospace;
  font-size: 14px;
  color: var(--green);
  text-shadow: var(--glow);
  margin-bottom: 8px;
  text-align: center;
}

.rom-instructions {
  text-align: center;
  color: var(--green-dim);
  font-size: 14px;
  margin-bottom: 16px;
}

.audio-note {
  text-align: center;
  color: var(--cyan-dim);
  font-size: 12px;
  margin-top: 12px;
}

#rom-slots {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 16px;
}

.rom-slot {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px;
}

.rom-label {
  font-family: 'Press Start 2P', monospace;
  font-size: 10px;
  color: var(--green);
  margin-bottom: 6px;
}

.rom-addr { color: var(--green-dim); font-size: 9px; }

.rom-dropzone {
  border: 1px dashed var(--green-dark);
  border-radius: 4px;
  padding: 12px 8px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  position: relative;
  min-height: 50px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.rom-dropzone:hover, .rom-dropzone.dragover {
  border-color: var(--green);
  background: rgba(0,255,65,0.05);
  box-shadow: inset 0 0 15px rgba(0,255,65,0.1);
}

.rom-dropzone.loaded {
  border-color: var(--green);
  border-style: solid;
  background: rgba(0,255,65,0.08);
}

.rom-status { font-size: 18px; }
.rom-text { font-size: 12px; color: var(--green-dim); word-break: break-all; }

.rom-input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.rom-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  font-family: 'Press Start 2P', monospace;
  font-size: 11px;
  padding: 10px 18px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s;
  text-transform: uppercase;
  letter-spacing: 1px;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.btn-primary {
  background: var(--green-dark);
  color: var(--green);
  border: 2px solid var(--green);
  box-shadow: var(--glow);
}

.btn-primary:not(:disabled):hover {
  background: var(--green);
  color: #000;
  box-shadow: var(--glow-strong);
}

.btn-primary:disabled {
  opacity: 0.3;
  cursor: not-allowed;
  box-shadow: none;
}

.btn-primary:not(:disabled) {
  animation: glow-pulse 2s ease-in-out infinite;
}

@keyframes glow-pulse {
  0%, 100% { box-shadow: 0 0 10px rgba(0,255,65,0.3); }
  50% { box-shadow: 0 0 25px rgba(0,255,65,0.6), 0 0 50px rgba(0,255,65,0.3); }
}

.btn-secondary {
  background: var(--bg-input);
  color: var(--green);
  border: 1px solid var(--green-dark);
  cursor: pointer;
}

.btn-secondary:hover { background: var(--green-dark); }

.btn-coin {
  background: #332200;
  color: var(--amber);
  border: 2px solid var(--amber);
  font-size: 12px;
  padding: 14px 20px;
  min-width: 44px;
  min-height: 44px;
}

.btn-coin:active { transform: translateY(2px); box-shadow: none; }

.btn-start-game {
  background: #220011;
  color: var(--red);
  border: 2px solid var(--red);
  font-size: 11px;
  padding: 14px 16px;
  min-width: 44px;
  min-height: 44px;
}

.btn-start-game:active { transform: translateY(2px); }

.btn-move, .btn-fire {
  background: var(--bg-input);
  color: var(--green);
  border: 2px solid var(--green-dark);
  font-size: 13px;
  padding: 16px 24px;
  border-bottom-width: 4px;
  min-width: 44px;
  min-height: 44px;
}

.btn-fire { border-color: var(--red); color: var(--red); }

.btn-move:active, .btn-fire:active {
  transform: translateY(2px);
  border-bottom-width: 2px;
}

.btn-row {
  gap: 8px;
}

/* Screen */
#screen-container {
  width: 100%;
  max-width: 560px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

#screen-bezel {
  background: #000;
  border: 4px solid #1a1a1a;
  border-radius: 12px;
  padding: 16px;
  box-shadow: inset 0 0 60px rgba(0,0,0,0.8), 0 0 30px rgba(0,255,65,0.1);
  width: 100%;
  display: flex;
  justify-content: center;
}

#crt-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 224 / 256;
  max-width: 448px;
}

#canvas {
  width: 100%;
  height: 100%;
  image-rendering: pixelated;
  image-rendering: -moz-crisp-edges;
  image-rendering: crisp-edges;
  display: block;
  background: #000;
}

#scanlines {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg,
    transparent 0px,
    transparent 1px,
    rgba(0,0,0,0.15) 1px,
    rgba(0,0,0,0.15) 2px
  );
  mix-blend-mode: multiply;
}

#scanlines.disabled { display: none; }

#crt-wrapper.crt-effect {
  filter: contrast(1.1) brightness(1.05);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: inset 0 0 80px rgba(0,0,0,0.4);
}

#stats-bar {
  display: flex;
  gap: 8px;
  padding: 8px;
  font-size: 12px;
  color: var(--green-dim);
  width: 100%;
  justify-content: center;
  flex-wrap: wrap;
}

.wasm-ind {
  color: var(--cyan);
  background: rgba(0,229,255,0.08);
  border: 1px solid var(--cyan-dim);
  padding: 0 6px;
  border-radius: 3px;
  font-size: 10px;
  font-family: 'Press Start 2P', monospace;
}

/* Controls */
#controls-panel {
  width: 100%;
  max-width: 560px;
}

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

.control-row {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}

#keyboard-map {
  margin-top: 16px;
  padding: 12px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 6px;
}

#keyboard-map h3 {
  font-family: 'Press Start 2P', monospace;
  font-size: 10px;
  color: var(--green-dim);
  margin-bottom: 8px;
  text-align: center;
}

.key-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px 16px;
  font-size: 13px;
}

kbd {
  background: var(--bg-input);
  border: 1px solid var(--green-dark);
  border-radius: 3px;
  padding: 1px 5px;
  font-family: 'VT323', monospace;
  color: var(--green);
  font-size: 14px;
}

/* Settings */
#settings-panel {
  width: 100%;
  max-width: 560px;
}

.settings-group {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 14px;
}

.settings-group h3 {
  font-family: 'Press Start 2P', monospace;
  font-size: 10px;
  color: var(--green-dim);
  margin-bottom: 10px;
}

.setting-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
  font-size: 14px;
  flex-wrap: wrap;
}

.setting-row label {
  min-width: 80px;
  color: var(--green-dim);
}

.setting-row select {
  background: var(--bg-input);
  color: var(--green);
  border: 1px solid var(--green-dark);
  padding: 6px 8px;
  font-family: 'VT323', monospace;
  font-size: 14px;
  border-radius: 3px;
  min-height: 36px;
}

.setting-row input[type="checkbox"] {
  accent-color: var(--green);
  width: 20px;
  height: 20px;
}

/* SN76477 Sound Chip Panel */
#sound-chip-panel {
  margin-top: 12px;
  background: var(--bg-panel);
  border: 1px solid var(--cyan-dim);
  border-radius: 6px;
  padding: 14px;
  box-shadow: var(--glow-cyan);
}

.sound-chip-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  margin-bottom: 10px;
}

.sound-chip-header h3 {
  font-family: 'Press Start 2P', monospace;
  font-size: 7px;
  color: var(--cyan);
  text-shadow: var(--glow-cyan);
  text-align: center;
  line-height: 1.4;
}

.chip-active {
  font-family: 'VT323', monospace;
  font-size: 13px;
  color: var(--cyan-dim);
  transition: all 0.3s;
}

.chip-active.active {
  color: var(--cyan);
  text-shadow: var(--glow-cyan-strong);
  animation: chip-pulse 1.5s ease-in-out infinite;
}

@keyframes chip-pulse {
  0%, 100% { text-shadow: 0 0 8px rgba(0,229,255,0.3); }
  50% { text-shadow: 0 0 16px rgba(0,229,255,0.7), 0 0 32px rgba(0,229,255,0.3); }
}

.audio-master-controls {
  border-bottom: 1px solid var(--border);
  padding-bottom: 8px;
  margin-bottom: 8px;
}

.audio-master-controls .setting-row label {
  min-width: 55px;
  color: var(--cyan-dim);
}

.audio-mode-label { font-size: 12px; color: var(--cyan); }

.volume-slider {
  flex: 1;
  accent-color: var(--cyan);
  cursor: pointer;
  max-width: 120px;
  min-height: 30px;
}

.volume-val {
  min-width: 40px;
  text-align: right;
  color: var(--cyan);
  font-size: 13px;
}

/* Sound Indicators */
.sound-indicators {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  margin-bottom: 10px;
}

.sound-led {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  color: #555;
  padding: 4px 6px;
  border-radius: 3px;
  background: rgba(0,0,0,0.3);
  transition: all 0.15s;
  font-family: 'Press Start 2P', monospace;
  font-size: 7px;
}

.sound-led.active { color: #fff; }

.led {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  background: #333;
  transition: all 0.1s;
  flex-shrink: 0;
}

.led.red { background: #441111; }
.led.green { background: #114411; }
.led.yellow { background: #444411; }
.led.blue { background: #111144; }
.led.orange { background: #442211; }
.led.white { background: #333; }

.sound-led.active .led.red { background: #ff2442; box-shadow: 0 0 8px #ff2442; }
.sound-led.active .led.green { background: #00ff41; box-shadow: 0 0 8px #00ff41; }
.sound-led.active .led.yellow { background: #ffff00; box-shadow: 0 0 8px #ffff00; }
.sound-led.active .led.blue { background: #4488ff; box-shadow: 0 0 8px #4488ff; }
.sound-led.active .led.orange { background: #ff8800; box-shadow: 0 0 8px #ff8800; }
.sound-led.active .led.white { background: #ffffff; box-shadow: 0 0 8px #ffffff; }

/* Oscilloscope */
.oscilloscope-container {
  position: relative;
  margin-bottom: 8px;
  border: 1px solid var(--cyan-dim);
  border-radius: 4px;
  overflow: hidden;
  background: #000;
}

#oscilloscope { width: 100%; height: 80px; display: block; }

.osc-label {
  position: absolute;
  bottom: 2px;
  right: 6px;
  font-family: 'Press Start 2P', monospace;
  font-size: 6px;
  color: rgba(0,229,255,0.3);
}

/* Chip Internals */
#chip-details { margin-bottom: 6px; }

#chip-details summary, #sound-toggles-details summary {
  font-family: 'Press Start 2P', monospace;
  font-size: 8px;
  color: var(--cyan-dim);
  cursor: pointer;
  user-select: none;
  padding: 6px 0;
  min-height: 36px;
  display: flex;
  align-items: center;
}

.chip-state {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin-top: 6px;
}

.chip-block {
  background: rgba(0,229,255,0.04);
  border: 1px solid rgba(0,229,255,0.15);
  border-radius: 3px;
  padding: 5px 7px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.chip-pinout-label {
  font-family: 'VT323', monospace;
  font-size: 11px;
  color: var(--amber);
  text-align: center;
  margin-bottom: 6px;
  padding: 2px 6px;
  background: rgba(255,176,0,0.06);
  border: 1px solid rgba(255,176,0,0.15);
  border-radius: 2px;
}

.chip-subtitle {
  font-family: 'VT323', monospace;
  font-size: 11px;
  color: rgba(0,229,255,0.6);
  margin-top: 2px;
}

.chip-block-label {
  font-family: 'Press Start 2P', monospace;
  font-size: 6px;
  color: var(--cyan);
}

.chip-val { font-size: 12px; color: var(--cyan-dim); }

.chip-val-sub {
  font-family: 'VT323', monospace;
  font-size: 11px;
  color: rgba(0,229,255,0.4);
}

.chip-indicator {
  font-size: 10px;
  font-family: 'VT323', monospace;
  padding: 1px 4px;
  border-radius: 2px;
  display: inline-block;
  width: fit-content;
}

.chip-indicator.off { color: #555; background: rgba(85,85,85,0.1); }
.chip-indicator.on {
  color: var(--cyan);
  text-shadow: var(--glow-cyan);
  background: rgba(0,229,255,0.08);
  animation: chip-indicator-pulse 1s ease-in-out infinite;
}

@keyframes chip-indicator-pulse {
  0%, 100% { background: rgba(0,229,255,0.08); }
  50% { background: rgba(0,229,255,0.15); }
}

.charge-bar {
  height: 6px;
  background: #1a1a1a;
  border-radius: 3px;
  overflow: hidden;
  border: 1px solid rgba(0,229,255,0.2);
}

.charge-fill {
  height: 100%;
  width: 0%;
  background: var(--cyan);
  border-radius: 3px;
  transition: width 0.1s;
  box-shadow: 0 0 4px var(--cyan);
}

/* Sound Toggles */
#sound-toggles-details { margin-bottom: 6px; }

.sound-toggles {
  margin-top: 6px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.stoggle label {
  font-size: 13px;
  color: var(--cyan-dim);
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  min-height: 36px;
}

.stoggle input[type="checkbox"] {
  accent-color: var(--cyan);
  width: 18px;
  height: 18px;
}

/* WAT Source Viewer */
#wat-viewer-panel {
  margin-top: 12px;
  background: var(--bg-panel);
  border: 1px solid var(--cyan-dim);
  border-radius: 6px;
  padding: 10px;
}

#wat-viewer-panel summary {
  font-family: 'Press Start 2P', monospace;
  font-size: 9px;
  color: var(--cyan);
  cursor: pointer;
  user-select: none;
  text-shadow: var(--glow-cyan);
  min-height: 36px;
  display: flex;
  align-items: center;
}

#wat-viewer-info {
  margin-top: 8px;
  margin-bottom: 8px;
  font-family: 'VT323', monospace;
  font-size: 13px;
  color: var(--cyan-dim);
}

.wat-note {
  font-size: 11px;
  color: rgba(0,229,255,0.5);
  margin-top: 4px;
  font-style: italic;
}

#wat-source-container {
  max-height: 400px;
  overflow: auto;
  background: #050510;
  border: 1px solid rgba(0,229,255,0.15);
  border-radius: 4px;
  padding: 8px;
  -webkit-overflow-scrolling: touch;
}

#wat-source-code {
  font-family: 'JetBrains Mono', 'Fira Code', 'VT323', monospace;
  font-size: 11px;
  line-height: 1.4;
  color: #aaa;
  white-space: pre;
  tab-size: 2;
}

.wat-linenum {
  color: #444;
  margin-right: 12px;
  user-select: none;
}

.wat-keyword { color: #00e5ff; font-weight: bold; }
.wat-instr { color: #6fc3df; }
.wat-number { color: #ffb000; }
.wat-comment { color: #4a8a4a; font-style: italic; }

/* Debug */
#debug-panel {
  margin-top: 12px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px;
}

#debug-panel summary {
  font-family: 'Press Start 2P', monospace;
  font-size: 9px;
  color: var(--amber);
  cursor: pointer;
  user-select: none;
  min-height: 36px;
  display: flex;
  align-items: center;
}

#debug-content { margin-top: 10px; }

#cpu-state {
  font-family: 'VT323', monospace;
  font-size: 13px;
  color: var(--green);
  background: #000;
  padding: 8px;
  border-radius: 4px;
  border: 1px solid var(--border);
  overflow-x: auto;
  white-space: pre;
  line-height: 1.5;
  -webkit-overflow-scrolling: touch;
}

/* Memory Corruption Panel */
#corruption-panel {
  margin-top: 12px;
  background: var(--bg-panel);
  border: 1px solid #442200;
  border-radius: 6px;
  padding: 14px;
  box-shadow: 0 0 10px rgba(255,100,0,0.08);
}

#corruption-panel h3 {
  font-family: 'Press Start 2P', monospace;
  font-size: 10px;
  color: var(--amber);
  margin-bottom: 4px;
  text-shadow: 0 0 8px rgba(255,176,0,0.4);
}

.corruption-desc {
  font-size: 12px;
  color: #886622;
  margin-bottom: 10px;
}

.corruption-controls {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.corruption-slider-row, .corruption-region-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  flex-wrap: wrap;
}

.corruption-slider-row label, .corruption-region-row label {
  min-width: 60px;
  color: var(--amber);
  font-size: 13px;
}

#corruption-amount {
  flex: 1;
  accent-color: var(--amber);
  cursor: pointer;
  min-height: 30px;
  min-width: 80px;
}

.corruption-val {
  min-width: 70px;
  text-align: right;
  color: var(--amber);
  font-size: 13px;
  font-family: 'VT323', monospace;
}

#corruption-region {
  background: var(--bg-input);
  color: var(--amber);
  border: 1px solid #442200;
  padding: 6px 8px;
  font-family: 'VT323', monospace;
  font-size: 14px;
  border-radius: 3px;
  flex: 1;
  min-height: 36px;
}

.btn-corrupt {
  background: #331100;
  color: var(--amber);
  border: 2px solid #ff6600;
  font-family: 'Press Start 2P', monospace;
  font-size: 11px;
  padding: 12px 18px;
  cursor: pointer;
  border-radius: 4px;
  transition: all 0.15s;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 4px;
  text-shadow: 0 0 6px rgba(255,102,0,0.5);
  box-shadow: 0 0 10px rgba(255,102,0,0.15);
  min-height: 44px;
}

.btn-corrupt:hover {
  background: #552200;
  box-shadow: 0 0 20px rgba(255,102,0,0.4);
}

.btn-corrupt:active {
  transform: translateY(2px);
  background: #ff6600;
  color: #000;
}

.btn-corrupt.corrupting {
  animation: corrupt-flash 0.3s ease-out;
}

@keyframes corrupt-flash {
  0% { box-shadow: 0 0 30px rgba(255,50,0,0.8); background: #ff3300; color: #fff; }
  100% { box-shadow: 0 0 10px rgba(255,102,0,0.15); background: #331100; color: var(--amber); }
}

/* Footer */
footer {
  text-align: center;
  padding: 20px 10px;
  margin-top: 30px;
  border-top: 1px solid var(--green-dark);
}

footer a {
  color: var(--green-dim);
  text-decoration: none;
  font-family: 'Press Start 2P', monospace;
  font-size: 10px;
  letter-spacing: 1px;
}

footer a:hover {
  color: var(--green);
  text-shadow: var(--glow);
}

.hidden { display: none !important; }

/* Responsive: Mobile */
@media (max-width: 600px) {
  #app { padding: 6px; }
  
  header { padding: 10px 6px; margin-bottom: 12px; }
  
  #rom-panel { padding: 14px 10px; }
  #rom-slots { grid-template-columns: 1fr; gap: 8px; }
  
  .rom-label { font-size: 9px; }
  
  .key-grid { grid-template-columns: 1fr; }
  
  .badges { flex-direction: row; align-items: center; }
  
  .btn { font-size: 10px; padding: 10px 14px; min-height: 44px; }
  .btn-coin, .btn-start-game { font-size: 10px; padding: 12px 14px; }
  .btn-move, .btn-fire { font-size: 12px; padding: 14px 20px; }
  
  .sound-indicators { grid-template-columns: repeat(2, 1fr); }
  .chip-state { grid-template-columns: 1fr; }
  
  #wabt-status-panel { 
    flex-direction: column; 
    text-align: center;
    align-items: center;
  }
  
  #wabt-status-icon { min-width: auto; }
  
  #screen-bezel { padding: 8px; border-radius: 8px; }
  
  #stats-bar { font-size: 10px; gap: 6px; }
  
  .setting-row label { min-width: 70px; font-size: 13px; }
  
  #corruption-panel { padding: 10px; }
  
  .sound-chip-header h3 { font-size: 6px; }
}

/* Responsive: Desktop wide */
@media (min-width: 900px) {
  #main-container {
    display: grid;
    grid-template-columns: 1fr auto;
    grid-template-rows: auto auto auto;
    gap: 20px;
    align-items: start;
  }
  #wabt-status-panel { grid-column: 1 / -1; }
  #rom-panel { grid-column: 1 / -1; }
  #screen-container { grid-column: 1; }
  #controls-panel { grid-column: 1; }
  #settings-panel {
    grid-column: 2;
    grid-row: 2 / 5;
    max-width: 320px;
    min-width: 280px;
  }
}