:root {
  --bg-deep: #0a0a14;
  --bg-panel: #10101e;
  --bg-editor: #0d0d1a;
  --bg-input: #141428;
  --border: #1e1e3a;
  --border-bright: #2a2a50;
  --text-primary: #c8c8e0;
  --text-dim: #6a6a8a;
  --text-green: #39ff14;
  --text-amber: #ffb020;
  --text-cyan: #00e5ff;
  --text-red: #ff3860;
  --accent-green: #39ff14;
  --accent-red: #ff3860;
  --accent-cyan: #00e5ff;
  --accent-amber: #ffb020;
  --accent-blue: #4060ff;
  --accent-yellow: #ffe030;
}

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

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

#root { min-height: 100vh; }

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

.scanline-overlay {
  pointer-events: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: 9999;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.08) 2px,
    rgba(0, 0, 0, 0.08) 4px
  );
}

.led-glow-green {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--accent-green);
  box-shadow: 0 0 6px var(--accent-green), 0 0 12px var(--accent-green);
  animation: pulse-green 1.5s ease-in-out infinite;
}
.led-glow-red {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--accent-red);
  box-shadow: 0 0 6px var(--accent-red), 0 0 12px var(--accent-red);
}
.led-glow-yellow {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--accent-yellow);
  box-shadow: 0 0 6px var(--accent-yellow), 0 0 12px var(--accent-yellow);
  animation: pulse-yellow 0.8s ease-in-out infinite;
}

@keyframes pulse-green {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}
@keyframes pulse-yellow {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes flash-value {
  0% { background: rgba(0, 229, 255, 0.3); }
  100% { background: transparent; }
}

.value-flash {
  animation: flash-value 0.5s ease-out;
}

.panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 4px;
}

.panel-header {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-dim);
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
}

.btn-arcade {
  font-family: 'Press Start 2P', cursive;
  font-size: 9px;
  padding: 8px 14px;
  border: 2px solid;
  border-radius: 3px;
  cursor: pointer;
  transition: all 0.1s;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.btn-arcade:active {
  transform: scale(0.95);
}
.btn-arcade.green {
  background: #0a2a0a;
  border-color: var(--accent-green);
  color: var(--accent-green);
}
.btn-arcade.green:hover { background: #0f3f0f; }
.btn-arcade.red {
  background: #2a0a0a;
  border-color: var(--accent-red);
  color: var(--accent-red);
}
.btn-arcade.red:hover { background: #3f0f0f; }
.btn-arcade.blue {
  background: #0a0a2a;
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}
.btn-arcade.blue:hover { background: #0f0f3f; }
.btn-arcade.yellow {
  background: #2a2a0a;
  border-color: var(--accent-yellow);
  color: var(--accent-yellow);
}
.btn-arcade.yellow:hover { background: #3f3f0f; }
.btn-arcade.cyan {
  background: #0a1a2a;
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}
.btn-arcade.cyan:hover { background: #0f2a3f; }

.code-editor {
  background: var(--bg-editor);
  color: var(--text-green);
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  line-height: 1.6;
  border: none;
  outline: none;
  resize: none;
  width: 100%;
  padding: 12px;
  tab-size: 8;
}

.hex-byte {
  display: inline-block;
  width: 22px;
  text-align: center;
  font-size: 11px;
}
.hex-byte.changed {
  animation: flash-value 1s ease-out;
  color: var(--accent-yellow);
}

.breakpoint-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent-red);
  box-shadow: 0 0 4px var(--accent-red);
  cursor: pointer;
}

.flag-on {
  color: var(--accent-green);
  text-shadow: 0 0 6px var(--accent-green);
}
.flag-off {
  color: #2a2a40;
}

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-deep); }
::-webkit-scrollbar-thumb { background: var(--border-bright); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #3a3a60; }

textarea::-webkit-scrollbar { width: 6px; }
textarea::-webkit-scrollbar-track { background: var(--bg-editor); }
textarea::-webkit-scrollbar-thumb { background: #1e1e3a; border-radius: 3px; }