:root {
  --phosphor: #33FF33;
  --phosphor-dim: #1a8c1a;
  --phosphor-glow: rgba(51, 255, 51, 0.15);
  --bg: #0a0a0a;
  --bg-panel: #111111;
  --bg-darker: #060606;
}

body.amber {
  --phosphor: #FFB000;
  --phosphor-dim: #8c6000;
  --phosphor-glow: rgba(255, 176, 0, 0.15);
}

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

body {
  background: var(--bg);
  color: var(--phosphor);
  font-family: 'VT323', monospace;
  overflow-x: hidden;
}

.font-pixel { font-family: 'Press Start 2P', cursive; }
.font-terminal { font-family: 'VT323', monospace; }

/* Pixel border effect */
.pixel-border {
  border: 2px solid var(--phosphor-dim);
  box-shadow: 
    inset 0 0 0 1px var(--bg),
    0 0 0 1px var(--phosphor-dim),
    0 0 10px var(--phosphor-glow);
}

.pixel-border-glow {
  border: 2px solid var(--phosphor);
  box-shadow: 
    inset 0 0 0 1px var(--bg),
    0 0 0 1px var(--phosphor),
    0 0 20px var(--phosphor-glow),
    0 0 40px var(--phosphor-glow);
}

/* CRT filter */
.crt-filter {
  position: relative;
}

.crt-filter::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    rgba(0,0,0,0.15) 0px,
    rgba(0,0,0,0.15) 1px,
    transparent 1px,
    transparent 3px
  );
  pointer-events: none;
  z-index: 10;
  border-radius: inherit;
}

.crt-filter::after {
  content: '';
  position: absolute;
  inset: -2px;
  background: radial-gradient(ellipse at center, transparent 60%, rgba(0,0,0,0.4) 100%);
  pointer-events: none;
  z-index: 11;
  border-radius: 8px;
}

/* Canvas pixelated rendering */
.pixelated {
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

/* Floppy slot drop zone */
.drop-zone {
  border: 3px dashed var(--phosphor-dim);
  background: repeating-linear-gradient(
    45deg,
    transparent,
    transparent 10px,
    rgba(255,255,255,0.01) 10px,
    rgba(255,255,255,0.01) 20px
  );
  transition: all 0.2s;
  cursor: pointer;
}

.drop-zone:hover, .drop-zone.drag-over {
  border-color: var(--phosphor);
  background: var(--phosphor-glow);
  box-shadow: 0 0 30px var(--phosphor-glow);
}

/* Apple keyboard key button */
.key-btn {
  font-family: 'Press Start 2P', cursive;
  background: #2a2a2a;
  color: var(--phosphor);
  border: 2px solid #444;
  border-radius: 4px;
  padding: 12px 24px;
  position: relative;
  box-shadow: 
    0 4px 0 #1a1a1a,
    0 6px 8px rgba(0,0,0,0.5),
    inset 0 1px 0 rgba(255,255,255,0.1);
  transition: all 0.05s;
  cursor: pointer;
  text-transform: uppercase;
}

.key-btn:active {
  transform: translateY(3px);
  box-shadow: 
    0 1px 0 #1a1a1a,
    0 2px 4px rgba(0,0,0,0.5),
    inset 0 1px 0 rgba(255,255,255,0.1);
}

.key-btn:hover {
  border-color: var(--phosphor-dim);
  box-shadow: 
    0 4px 0 #1a1a1a,
    0 6px 8px rgba(0,0,0,0.5),
    inset 0 1px 0 rgba(255,255,255,0.1),
    0 0 15px var(--phosphor-glow);
}

.key-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* Rainbow Apple logo animation */
@keyframes rainbow-shift {
  0% { filter: hue-rotate(0deg); }
  100% { filter: hue-rotate(360deg); }
}

.rainbow-apple {
  animation: rainbow-shift 4s linear infinite;
}

/* Progress bar */
.progress-bar {
  background: var(--bg-darker);
  border: 1px solid var(--phosphor-dim);
  height: 20px;
  position: relative;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: var(--phosphor);
  transition: width 0.3s;
  box-shadow: 0 0 10px var(--phosphor-glow);
}

/* Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-darker); }
::-webkit-scrollbar-thumb { background: var(--phosphor-dim); border-radius: 4px; }

/* Monitor mode overlay */
.monitor-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg);
  color: var(--phosphor);
  font-family: 'VT323', monospace;
  font-size: 20px;
  padding: 20px;
  z-index: 9999;
  overflow: hidden;
  animation: monitor-flicker 0.1s;
}

@keyframes monitor-flicker {
  0% { opacity: 0; }
  50% { opacity: 1; }
}

/* Fullscreen green mode (Konami) */
.konami-mode {
  filter: saturate(0) brightness(0.8);
  background: #000 !important;
}

.konami-mode * {
  color: #33FF33 !important;
  border-color: #33FF33 !important;
}

/* Slider styling */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  background: var(--bg-darker);
  border: 1px solid var(--phosphor-dim);
  height: 8px;
  border-radius: 0;
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 20px;
  background: var(--phosphor);
  border: none;
  cursor: pointer;
}

select, option {
  background: var(--bg-darker);
  color: var(--phosphor);
  border: 1px solid var(--phosphor-dim);
  font-family: 'VT323', monospace;
  font-size: 18px;
  padding: 4px 8px;
}

/* Ambient glow around canvas area */
.canvas-glow {
  box-shadow: 
    0 0 30px var(--phosphor-glow),
    0 0 60px var(--phosphor-glow),
    inset 0 0 30px rgba(0,0,0,0.5);
  border-radius: 8px;
}

/* Blink cursor */
@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.cursor-blink::after {
  content: '█';
  animation: blink 1s step-end infinite;
}

/* Palette swatch */
.palette-swatch {
  width: 24px;
  height: 24px;
  border: 1px solid #333;
  display: inline-block;
}

@media (max-width: 768px) {
  .font-pixel { font-size: 8px !important; }
}