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

body {
  background: #0d0d1a;
  background-image: 
    radial-gradient(ellipse at 50% 0%, #1a1a3e 0%, #0d0d1a 70%),
    repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(255,255,255,0.01) 2px, rgba(255,255,255,0.01) 4px);
  color: #33ff33;
  font-family: 'VT323', monospace;
  min-height: 100vh;
  overflow-x: hidden;
}

#app {
  max-width: 900px;
  margin: 0 auto;
  padding: 10px;
}

#header {
  text-align: center;
  padding: 15px 0 5px;
}

#header h1 {
  font-family: 'Share Tech Mono', monospace;
  font-size: 28px;
  color: #e8d5a3;
  text-shadow: 0 0 10px rgba(232,213,163,0.5);
  letter-spacing: 6px;
}

#subtitle {
  font-size: 14px;
  color: #666;
  letter-spacing: 4px;
}

/* Control Bar */
#control-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 10px;
  background: #1a1a2e;
  border: 2px solid #2a2a4a;
  border-radius: 8px;
  margin: 10px 0;
  align-items: center;
}

.ctrl-btn {
  font-family: 'VT323', monospace;
  font-size: 13px;
  padding: 6px 10px;
  background: linear-gradient(180deg, #3a3a5a 0%, #2a2a4a 100%);
  color: #aaa;
  border: 2px solid #4a4a6a;
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 5px;
  transition: all 0.15s;
}

.ctrl-btn:hover { background: linear-gradient(180deg, #4a4a6a 0%, #3a3a5a 100%); color: #ddd; }
.ctrl-btn:active { transform: translateY(1px); }

.ctrl-btn.active { border-color: #33ff33; color: #33ff33; }
.ctrl-btn.active .btn-led { background: #33ff33; box-shadow: 0 0 6px #33ff33; }
.ctrl-btn.power-on { border-color: #ff3333; color: #ff3333; }
.ctrl-btn.power-on .btn-led { background: #ff3333; box-shadow: 0 0 6px #ff3333; }

.btn-led {
  width: 6px; height: 6px;
  background: #333;
  border-radius: 50%;
  display: inline-block;
}

#speed-display {
  margin-left: auto;
  font-size: 14px;
  color: #33ff33;
  padding: 0 8px;
}

/* ROM Panel */
#rom-panel {
  background: #0a0a1a;
  border: 2px solid #33ff33;
  border-radius: 8px;
  padding: 15px;
  margin: 10px 0;
}

#rom-panel h2 {
  color: #33ff33;
  font-size: 18px;
  margin-bottom: 10px;
  text-shadow: 0 0 5px rgba(51,255,51,0.5);
}

#drop-zone {
  border: 2px dashed #33ff33;
  border-radius: 8px;
  padding: 20px;
  text-align: center;
  color: #33ff33;
  margin-bottom: 10px;
  transition: background 0.3s;
}

#drop-zone.dragover { background: rgba(51,255,51,0.1); }
#drop-zone p { margin: 5px 0; font-size: 16px; }

#file-input { display: none; }

.file-label {
  display: inline-block;
  padding: 8px 20px;
  background: #33ff33;
  color: #000;
  border-radius: 4px;
  cursor: pointer;
  font-family: 'VT323', monospace;
  font-size: 16px;
  margin-top: 5px;
}

.file-label:hover { background: #44ff44; }

#rom-table {
  width: 100%;
  border-collapse: collapse;
  margin: 10px 0;
  font-size: 14px;
}

#rom-table th {
  background: #1a1a3e;
  color: #33ff33;
  padding: 6px 10px;
  text-align: left;
  border-bottom: 1px solid #33ff33;
}

#rom-table td {
  padding: 5px 10px;
  border-bottom: 1px solid #1a1a3e;
  color: #ccc;
}

#rom-table input {
  background: #0a0a1a;
  border: 1px solid #33ff33;
  color: #33ff33;
  font-family: 'VT323', monospace;
  font-size: 14px;
  padding: 2px 6px;
  width: 60px;
}

.boot-btn {
  font-family: 'VT323', monospace;
  font-size: 18px;
  padding: 10px 30px;
  background: #33ff33;
  color: #000;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  display: block;
  margin: 10px auto 0;
}

.boot-btn:hover { background: #44ff44; }

/* Monitor */
#monitor {
  display: flex;
  justify-content: center;
  margin: 10px 0;
}

#bezel {
  background: linear-gradient(135deg, #c8bfa0 0%, #a89878 30%, #b8a888 70%, #d0c8a8 100%);
  padding: 20px 25px;
  border-radius: 20px;
  box-shadow: 
    0 0 0 3px #8a7a5a,
    0 4px 20px rgba(0,0,0,0.6),
    inset 0 2px 4px rgba(255,255,255,0.3);
}

#screen-container {
  position: relative;
  background: #000;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: inset 0 0 30px rgba(0,0,0,0.8);
}

#canvas {
  display: block;
  width: 100%;
  max-width: 640px;
  height: auto;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

#scanlines {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 1px,
    rgba(0,0,0,0.15) 1px,
    rgba(0,0,0,0.15) 2px
  );
  pointer-events: none;
}

/* Keyboard */
#keyboard {
  background: linear-gradient(180deg, #2a2a3a 0%, #1a1a2a 100%);
  border: 2px solid #3a3a5a;
  border-radius: 10px;
  padding: 10px;
  margin: 10px 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.kb-row {
  display: flex;
  gap: 3px;
  justify-content: center;
}

.kb-key {
  font-family: 'VT323', monospace;
  font-size: 12px;
  min-width: 32px;
  height: 32px;
  background: linear-gradient(180deg, #3a3a4a 0%, #2a2a3a 100%);
  color: #ddd;
  border: 1px solid #4a4a5a;
  border-bottom: 3px solid #1a1a2a;
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.1s;
  user-select: none;
  padding: 0 4px;
}

.kb-key:hover { background: linear-gradient(180deg, #4a4a5a 0%, #3a3a4a 100%); }
.kb-key:active, .kb-key.pressed {
  transform: translateY(2px);
  border-bottom-width: 1px;
  background: linear-gradient(180deg, #2a2a3a 0%, #1a1a2a 100%);
  color: #33ff33;
}

.kb-key.wide { min-width: 50px; }
.kb-key.wider { min-width: 70px; }
.kb-key.widest { min-width: 200px; }
.kb-key.special { color: #e8a033; }

/* Debug Panel */
#debug-panel {
  background: #0a0a0a;
  border: 2px solid #33ff33;
  border-radius: 8px;
  padding: 10px;
  margin: 10px 0;
  font-size: 14px;
}

#registers, #flags {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

#registers span { color: #aaa; }
#registers b { color: #33ff33; margin-left: 3px; }

#flags span {
  display: inline-block;
  width: 22px;
  height: 22px;
  line-height: 22px;
  text-align: center;
  border-radius: 3px;
  background: #1a1a1a;
  color: #444;
  font-weight: bold;
}

#flags span.flag-on {
  background: #33ff33;
  color: #000;
  box-shadow: 0 0 5px #33ff33;
}

#cycles-display { color: #666; margin: 5px 0; }

#mem-viewer {
  margin-top: 8px;
}

#mem-viewer label { color: #aaa; font-size: 14px; }
#mem-viewer input {
  background: #0a0a0a;
  border: 1px solid #33ff33;
  color: #33ff33;
  font-family: 'VT323', monospace;
  font-size: 14px;
  padding: 2px 4px;
  width: 50px;
}

#mem-dump {
  color: #33ff33;
  font-size: 12px;
  margin-top: 5px;
  line-height: 1.4;
  white-space: pre;
  overflow-x: auto;
}

.hidden { display: none !important; }

footer {
  text-align: center;
  padding: 15px;
  font-size: 14px;
  color: #555;
}

footer a {
  color: #33ff33;
  text-decoration: none;
}

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

/* Screen glow for green phosphor */
.phosphor-green #canvas {
  filter: drop-shadow(0 0 3px rgba(51,255,51,0.3));
}

.phosphor-white #canvas {
  filter: drop-shadow(0 0 3px rgba(255,255,255,0.2));
}

@media (max-width: 700px) {
  #bezel { padding: 10px 12px; border-radius: 12px; }
  #header h1 { font-size: 20px; letter-spacing: 3px; }
  .kb-key { min-width: 24px; height: 28px; font-size: 10px; }
  .kb-key.wide { min-width: 36px; }
  .kb-key.wider { min-width: 50px; }
  .kb-key.widest { min-width: 120px; }
  .ctrl-btn { font-size: 11px; padding: 4px 6px; }
}