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

:root {
  --bg: #111111;
  --pcb: #c4a96a;
  --pcb-dark: #9c8450;
  --green: #00ff41;
  --green-dim: #004d13;
  --amber: #ffb000;
  --amber-dim: #4d3500;
  --white-phosphor: #e0e0e0;
  --panel-bg: #1e1e1e;
  --panel-border: #3a3a3a;
  --text: #d0d0d0;
  --text-dim: #777;
  --key-bg: #d4d4d4;
  --key-text: #222;
  --key-shadow: #999;
  --red: #ff3333;
  --font-mono: 'Share Tech Mono', 'Courier New', monospace;
  --font-display: 'Press Start 2P', monospace;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-mono);
  min-height: 100vh;
  overflow-x: hidden;
}

#emulator-wrapper {
  max-width: 1400px;
  margin: 0 auto;
  padding: 16px;
}

header#header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: linear-gradient(135deg, var(--pcb) 0%, var(--pcb-dark) 100%);
  border-radius: 12px 12px 0 0;
  border: 2px solid var(--pcb-dark);
  border-bottom: none;
}

header h1 {
  font-family: var(--font-display);
  font-size: 14px;
  color: #1a1a1a;
  letter-spacing: 1px;
}

.subtitle {
  font-size: 11px;
  color: #3a3a1a;
  margin-top: 4px;
}

.header-leds {
  display: flex;
  gap: 20px;
}

.led-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.led-group label {
  font-size: 8px;
  font-family: var(--font-display);
  color: #1a1a1a;
}

.led {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 1px solid #333;
}

.led.green {
  background: var(--green-dim);
}

.led.green.on {
  background: var(--green);
  box-shadow: 0 0 8px var(--green), 0 0 16px var(--green);
  animation: led-blink 1.5s ease-in-out infinite;
}

.led.amber {
  background: var(--amber-dim);
}

.led.amber.on {
  background: var(--amber);
  box-shadow: 0 0 8px var(--amber), 0 0 16px var(--amber);
}

@keyframes led-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

#main-area {
  display: flex;
  gap: 16px;
  background: linear-gradient(180deg, var(--pcb-dark) 0%, #8a7040 50%, var(--pcb-dark) 100%);
  padding: 16px;
  border: 2px solid var(--pcb-dark);
  border-top: none;
  border-bottom: none;
}

#left-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
}

#right-col {
  width: 320px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* CRT */
#crt-bezel {
  background: #2a2a2a;
  border-radius: 20px;
  padding: 20px;
  box-shadow: inset 0 0 30px rgba(0,0,0,0.8), 0 4px 20px rgba(0,0,0,0.5);
  border: 3px solid #444;
}

#crt-inner {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  background: #0a0a0a;
  box-shadow: inset 0 0 60px rgba(0,255,65,0.05);
}

#crt-inner.amber-glow {
  box-shadow: inset 0 0 60px rgba(255,176,0,0.05);
}

#crt-inner.white-glow {
  box-shadow: inset 0 0 60px rgba(200,200,200,0.03);
}

#canvas {
  display: block;
  width: 100%;
  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 0px,
    transparent 2px,
    rgba(0,0,0,0.15) 2px,
    rgba(0,0,0,0.15) 4px
  );
  pointer-events: none;
}

#phosphor-selector {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 0;
}

#phosphor-selector label {
  font-size: 11px;
  color: var(--text-dim);
}

.phosphor-btn {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 4px 10px;
  border: 1px solid var(--panel-border);
  background: var(--panel-bg);
  color: var(--text-dim);
  border-radius: 4px;
  cursor: pointer;
}

.phosphor-btn.active {
  color: var(--green);
  border-color: var(--green);
  background: rgba(0,255,65,0.1);
}

.phosphor-btn[data-color="amber"].active {
  color: var(--amber);
  border-color: var(--amber);
  background: rgba(255,176,0,0.1);
}

.phosphor-btn[data-color="white"].active {
  color: var(--white-phosphor);
  border-color: var(--white-phosphor);
  background: rgba(200,200,200,0.1);
}

/* Keyboard */
#keyboard-container {
  background: #2a2a2a;
  border-radius: 10px;
  padding: 12px;
  border: 2px solid #444;
}

#keyboard {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

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

.kb-key {
  font-family: var(--font-mono);
  font-size: 10px;
  padding: 6px 8px;
  min-width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(180deg, #e8e8e8 0%, #c8c8c8 100%);
  color: var(--key-text);
  border: 1px solid #aaa;
  border-bottom: 3px solid var(--key-shadow);
  border-radius: 4px;
  cursor: pointer;
  user-select: none;
  transition: all 0.05s;
  white-space: nowrap;
}

.kb-key:active, .kb-key.pressed {
  transform: translateY(2px);
  border-bottom-width: 1px;
  background: linear-gradient(180deg, #b8b8b8 0%, #a8a8a8 100%);
}

.kb-key.break-key {
  background: linear-gradient(180deg, #ff5555 0%, #cc2222 100%);
  color: white;
  border-color: #991111;
}

.kb-key.shift-key, .kb-key.ctrl-key {
  min-width: 48px;
}

.kb-key.shift-key.locked, .kb-key.ctrl-key.locked {
  background: linear-gradient(180deg, #66cc66 0%, #449944 100%);
  color: white;
}

.kb-key.space-key {
  flex: 1;
  min-width: 200px;
}

.kb-key.return-key {
  min-width: 56px;
  background: linear-gradient(180deg, #e8e8c8 0%, #c8c8a8 100%);
}

/* Panels */
.panel {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  padding: 12px;
}

.panel h3 {
  font-family: var(--font-display);
  font-size: 9px;
  color: var(--green);
  margin-bottom: 10px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

/* ROM */
.rom-slot {
  margin-bottom: 8px;
}

.rom-slot > label {
  font-size: 11px;
  display: block;
  margin-bottom: 4px;
}

.rom-addr {
  color: var(--text-dim);
  font-size: 10px;
}

.drop-zone {
  position: relative;
  border: 2px dashed var(--panel-border);
  border-radius: 6px;
  padding: 10px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s;
}

.drop-zone:hover, .drop-zone.drag-over {
  border-color: var(--green);
}

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

.drop-text {
  font-size: 10px;
  color: var(--text-dim);
}

.rom-status {
  font-size: 10px;
  display: block;
  margin-top: 4px;
}

.rom-summary {
  font-size: 11px;
  padding: 6px;
  text-align: center;
  border-top: 1px solid var(--panel-border);
  margin-top: 8px;
  color: var(--red);
}

.rom-summary.all-loaded {
  color: var(--green);
}

/* Cassette */
.cassette-visual {
  text-align: center;
  margin-bottom: 8px;
}

.reel {
  transform-origin: center;
}

.cassette-active .reel {
  animation: spin-reel 1s linear infinite;
}

@keyframes spin-reel {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* Using CSS on SVG circle doesn't rotate from center well, we'll animate via JS */

.cassette-status {
  font-size: 10px;
  color: var(--text-dim);
  text-align: center;
  margin-top: 6px;
}

/* Controls */
.ctrl-btn {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 8px 14px;
  border: 1px solid var(--panel-border);
  background: #2a2a2a;
  color: var(--text);
  border-radius: 6px;
  cursor: pointer;
  width: 100%;
  margin-bottom: 6px;
  transition: all 0.1s;
}

.ctrl-btn:hover {
  background: #3a3a3a;
}

.ctrl-btn.small {
  width: auto;
  padding: 4px 10px;
  font-size: 10px;
  margin-bottom: 0;
}

.power-btn {
  background: linear-gradient(180deg, #1a4d1a 0%, #0d2e0d 100%);
  border-color: #2a7a2a;
  color: var(--green);
  font-size: 14px;
  font-weight: bold;
}

.power-btn:hover { background: linear-gradient(180deg, #2a6a2a 0%, #1a4d1a 100%); }

.power-btn.on {
  background: linear-gradient(180deg, #4d1a1a 0%, #2e0d0d 100%);
  border-color: #7a2a2a;
  color: var(--red);
}

.reset-btn {
  background: linear-gradient(180deg, #4d1a1a 0%, #2e0d0d 100%);
  border-color: #7a2a2a;
  color: var(--red);
}

.ctrl-row {
  display: flex;
  gap: 6px;
}

.ctrl-row .ctrl-btn {
  flex: 1;
}

.speed-control, .audio-control {
  margin-top: 8px;
}

.speed-control label, .audio-control label {
  font-size: 10px;
  color: var(--text-dim);
  display: block;
  margin-bottom: 4px;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--green);
}

.audio-control {
  display: flex;
  align-items: center;
  gap: 8px;
}

.audio-control label { margin-bottom: 0; }
.audio-control input[type="range"] { flex: 1; }

/* Debug */
.collapsible h3 {
  cursor: pointer;
  user-select: none;
}

#debug-content.collapsed {
  display: none;
}

.registers {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 8px;
}

.reg {
  background: #111;
  padding: 4px 8px;
  border-radius: 4px;
  border: 1px solid #333;
}

.reg-label {
  color: var(--text-dim);
  font-size: 10px;
}

.reg-val {
  color: var(--green);
  font-size: 12px;
  font-weight: bold;
  margin-left: 4px;
}

.flags {
  display: flex;
  gap: 4px;
  margin-bottom: 8px;
}

.flag {
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  border-radius: 50%;
  background: #222;
  border: 1px solid #444;
  color: var(--text-dim);
}

.flag.set {
  background: var(--green);
  color: #000;
  border-color: var(--green);
  box-shadow: 0 0 6px var(--green);
}

.flag.flag-dim {
  opacity: 0.3;
}

.disasm-view, .mem-inspector, .breakpoint-ctrl {
  margin-top: 8px;
}

.disasm-view label, .mem-inspector label, .breakpoint-ctrl label {
  font-size: 10px;
  color: var(--text-dim);
}

.disasm-view pre, .mem-inspector pre {
  font-size: 10px;
  color: var(--green);
  background: #111;
  padding: 6px;
  border-radius: 4px;
  border: 1px solid #333;
  max-height: 120px;
  overflow-y: auto;
  margin-top: 4px;
  white-space: pre;
}

.mem-inspector input, .breakpoint-ctrl input {
  font-family: var(--font-mono);
  font-size: 11px;
  width: 60px;
  background: #111;
  color: var(--green);
  border: 1px solid #444;
  border-radius: 4px;
  padding: 2px 6px;
}

#bp-status {
  font-size: 10px;
  color: var(--amber);
  margin-left: 4px;
}

/* Log */
#log-panel {
  margin-top: 0;
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 0 0 12px 12px;
  border-top: 2px solid var(--pcb-dark);
}

#log-output {
  font-size: 10px;
  color: var(--text-dim);
  background: #0a0a0a;
  padding: 8px;
  border-radius: 4px;
  height: 80px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

/* Help */
.help-btn {
  position: fixed;
  bottom: 60px;
  right: 20px;
  width: 36px !important;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--pcb);
  color: #1a1a1a;
  font-weight: bold;
  z-index: 100;
}

.modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
}

.modal.hidden { display: none; }

.modal-content {
  background: var(--panel-bg);
  border: 2px solid var(--pcb);
  border-radius: 12px;
  padding: 24px;
  max-width: 500px;
  width: 90%;
}

.modal-content h2 {
  font-family: var(--font-display);
  font-size: 12px;
  color: var(--green);
  margin-bottom: 16px;
}

.modal-content ol {
  padding-left: 20px;
  font-size: 12px;
  line-height: 1.8;
}

.modal-content button {
  margin-top: 16px;
}

footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  font-size: 10px;
  color: var(--text-dim);
  max-width: 1400px;
  margin: 12px auto 0;
}

footer a {
  color: var(--green);
  text-decoration: none;
}

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

/* Responsive */
@media (max-width: 900px) {
  #main-area {
    flex-direction: column;
  }
  #right-col {
    width: 100%;
  }
  .kb-key {
    font-size: 8px;
    padding: 4px 4px;
    min-width: 24px;
    height: 28px;
  }
  .kb-key.space-key {
    min-width: 120px;
  }
  footer {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}