:root {
  --bg-deep: #080812;
  --bg-panel: #0e0e22;
  --bg-panel-border: #1a1a3a;
  --green-glow: #33ff66;
  --amber: #e89020;
  --blue-accent: #4488ff;
  --red-accent: #ff4444;
}

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

body {
  background: var(--bg-deep);
  color: #b0c0d0;
  font-family: 'IBM Plex Mono', 'Courier New', monospace;
  min-height: 100vh;
  overflow-x: hidden;
}

.font-pixel { font-family: 'Press Start 2P', monospace; }
.font-mono { font-family: 'IBM Plex Mono', monospace; }

.title-glow { color: var(--green-glow); text-shadow: 0 0 8px rgba(51,255,102,0.4); }
.subtitle-text { color: var(--amber); }

.header-bar {
  background: linear-gradient(180deg, #0c0c20, var(--bg-deep));
  border-bottom: 1px solid #1a1a3a;
}

.footer-bar {
  background: #060610;
  border-top: 1px solid #1a1a3a;
  margin-top: auto;
}

/* Main grid layout */
.main-grid {
  display: grid;
  grid-template-columns: 220px 1fr 260px;
  gap: 16px;
  min-height: 500px;
}

@media (max-width: 1100px) {
  .main-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .controls-panel {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }
  .screen-panel { order: -1; }
}

@media (max-width: 600px) {
  .controls-panel {
    grid-template-columns: 1fr;
  }
  .crt-bezel { padding: 6px; }
}

/* CRT styles */
.crt-screen {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 0 40px rgba(51,255,102,0.06), inset 0 0 30px rgba(0,0,0,0.6);
  background: #000;
}

.crt-screen::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: repeating-linear-gradient(0deg, rgba(0,0,0,0.12) 0px, rgba(0,0,0,0.12) 1px, transparent 1px, transparent 3px);
  pointer-events: none;
  z-index: 2;
}

.crt-screen::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(ellipse at center, transparent 60%, rgba(0,0,0,0.35) 100%);
  pointer-events: none;
  z-index: 3;
}

.crt-bezel {
  background: linear-gradient(145deg, #141428, #0a0a16);
  border: 2px solid #222244;
  border-radius: 16px;
  padding: 10px;
  box-shadow: 0 6px 24px rgba(0,0,0,0.5), inset 0 1px 0 rgba(255,255,255,0.03);
  display: inline-block;
}

.oric-canvas {
  width: 100%;
  max-width: 480px;
  height: auto;
  display: block;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

/* Keyboard */
.keyboard-container {
  width: 100%;
  max-width: 520px;
  padding: 8px;
  border-radius: 8px;
  background: #0e0e1e;
  border: 1px solid #222244;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.key-cap {
  background: linear-gradient(180deg, #2a2a3a, #1e1e2e);
  border: 1px solid #3a3a4a;
  border-bottom: 2px solid #111120;
  border-radius: 3px;
  color: #ccc;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 9px;
  font-weight: 700;
  cursor: pointer;
  user-select: none;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 30px;
  transition: all 0.04s;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.key-cap:active, .key-cap.pressed {
  background: linear-gradient(180deg, #1e1e2e, #2e2e4e);
  border-bottom: 1px solid #3a3a4a;
  transform: translateY(1px);
  box-shadow: 0 0 6px rgba(51,255,102,0.25);
  color: var(--green-glow);
}

.key-cap.modifier {
  background: linear-gradient(180deg, #3a2020, #2a1515);
  border-color: #4a2a2a;
}

.key-cap.space-bar {
  flex: 0 0 140px !important;
}

@media (max-width: 500px) {
  .key-cap { height: 26px; font-size: 7px; }
  .key-cap.space-bar { flex: 0 0 100px !important; }
}

/* Panels */
.panel {
  background: var(--bg-panel);
  border: 1px solid var(--bg-panel-border);
  border-radius: 6px;
  padding: 10px;
}

.panel-header {
  font-family: 'Press Start 2P', monospace;
  font-size: 8px;
  color: var(--amber);
  margin-bottom: 6px;
  letter-spacing: 0.5px;
}

/* Buttons */
.retro-btn {
  font-family: 'Press Start 2P', monospace;
  font-size: 8px;
  padding: 6px 10px;
  border: 2px solid;
  border-radius: 3px;
  cursor: pointer;
  background: transparent;
  transition: all 0.1s;
}
.retro-btn:hover { transform: translateY(-1px); }
.retro-btn:active { transform: translateY(1px); }
.btn-red { border-color: #ff4444; color: #ff4444; }
.btn-amber { border-color: var(--amber); color: var(--amber); }
.btn-blue { border-color: var(--blue-accent); color: var(--blue-accent); }
.btn-green { border-color: var(--green-glow); color: var(--green-glow); }

/* Toggle */
.toggle-switch {
  width: 40px; height: 20px;
  background: #1a1a2a;
  border-radius: 10px;
  position: relative;
  cursor: pointer;
  border: 2px solid #333;
  transition: all 0.2s;
}
.toggle-switch.on { background: #0a2a0a; border-color: var(--green-glow); }
.toggle-switch::after {
  content: '';
  position: absolute;
  width: 12px; height: 12px;
  background: #555;
  border-radius: 50%;
  top: 2px; left: 2px;
  transition: all 0.2s;
}
.toggle-switch.on::after {
  left: 22px;
  background: var(--green-glow);
  box-shadow: 0 0 6px var(--green-glow);
}

/* LEDs */
.led { width: 7px; height: 7px; border-radius: 50%; display: inline-block; }
.led.green { background: #33ff66; box-shadow: 0 0 5px #33ff66; }
.led.amber { background: var(--amber); box-shadow: 0 0 5px var(--amber); }
.led.blue { background: var(--blue-accent); box-shadow: 0 0 5px var(--blue-accent); }
.led.off { background: #222; }

/* Registers */
.reg-box { background: #060612; }
.flag-bit {
  font-size: 9px;
  width: 20px; height: 20px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 3px;
  font-weight: bold;
  font-family: 'IBM Plex Mono', monospace;
  background: #0a0a14;
  color: #333;
  border: 1px solid #222;
}
.flag-bit.set {
  background: #0a2a0a;
  color: var(--green-glow);
  border-color: var(--green-glow);
}

.instr-display {
  background: #060612;
  color: var(--amber);
}

/* Memory dump */
.mem-dump {
  background: #040408;
  border-radius: 4px;
  padding: 4px;
  overflow-x: auto;
}

/* Drop zone */
.drop-zone {
  border: 2px dashed #333355;
  border-radius: 6px;
  padding: 14px 8px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
}
.drop-zone:hover, .drop-zone.drag-over {
  border-color: var(--amber);
  background: rgba(232,144,32,0.04);
}

/* Animations */
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }
.blink { animation: blink 1s infinite; }
@keyframes blink-slow { 0%,100%{opacity:1} 50%{opacity:0.3} }
.blink-slow { animation: blink-slow 2s infinite; }

/* Scrollbar */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: var(--bg-deep); }
::-webkit-scrollbar-thumb { background: #2a2a44; border-radius: 3px; }

/* Modal */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.85);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.modal-content {
  background: var(--bg-panel);
  border: 2px solid var(--amber);
  border-radius: 10px;
  padding: 20px;
  max-width: 500px;
  max-height: 80vh;
  overflow-y: auto;
  width: 100%;
}