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

:root {
  --bg: #111111;
  --panel-bg: #1a1a1a;
  --panel-border: #2a2a2a;
  --text: #c0c0c0;
  --text-dim: #666;
  --accent: #ff9900;
  --accent-dim: #995500;
  --green: #33ff33;
  --green-dim: #0a4a0a;
  --red: #ff3333;
  --key-bg: #d4cfc0;
  --key-border: #8a8578;
  --key-text: #222;
  --crt-bg: #0a0a0a;
}

body {
  font-family: 'IBM Plex Mono', monospace;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  background-image: 
    radial-gradient(ellipse at 50% 0%, #1a1510 0%, transparent 60%),
    repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(255,255,255,0.008) 2px, rgba(255,255,255,0.008) 4px);
}

#app { max-width: 1400px; margin: 0 auto; padding: 8px; }

/* Header */
#header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 20px;
  background: linear-gradient(180deg, #252525 0%, #1a1a1a 100%);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  margin-bottom: 8px;
  flex-wrap: wrap;
  gap: 8px;
}

.header-title h1 {
  font-family: 'Orbitron', sans-serif;
  font-weight: 900;
  font-size: 1.8rem;
  color: var(--accent);
  letter-spacing: 4px;
  text-shadow: 0 0 20px rgba(255,153,0,0.3);
}

.subtitle {
  font-size: 0.7rem;
  color: var(--text-dim);
  letter-spacing: 2px;
}

.rom-badges { display: flex; gap: 12px; flex-wrap: wrap; }

.badge {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.65rem;
  font-weight: 500;
  padding: 4px 10px;
  background: #222;
  border-radius: 4px;
  letter-spacing: 1px;
}

.badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--red);
  box-shadow: 0 0 6px var(--red);
  transition: all 0.3s;
}

.badge.loaded .dot {
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
}

/* Main Layout */
#main-area {
  display: grid;
  grid-template-columns: 240px 1fr 220px;
  gap: 8px;
  align-items: start;
}

/* Panels */
.panel {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  padding: 12px;
  margin-bottom: 8px;
}

.panel h3 {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.65rem;
  color: var(--accent);
  letter-spacing: 2px;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--panel-border);
  padding-bottom: 4px;
}

/* Buttons */
.btn {
  font-family: 'IBM Plex Mono', monospace;
  background: #2a2a2a;
  color: var(--text);
  border: 1px solid #444;
  padding: 6px 12px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.7rem;
  transition: all 0.15s;
  letter-spacing: 1px;
}

.btn:hover:not(:disabled) {
  background: #3a3a3a;
  border-color: var(--accent);
}

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

.btn-small { padding: 4px 8px; font-size: 0.65rem; }

.btn-power {
  background: #1a3a1a;
  border-color: #2a5a2a;
  color: var(--green);
  font-size: 0.8rem;
  padding: 8px 16px;
  width: 100%;
}

.btn-power:hover:not(:disabled) {
  background: #2a5a2a;
  box-shadow: 0 0 12px rgba(51,255,51,0.2);
}

.btn-power.on {
  background: #3a1a1a;
  border-color: #5a2a2a;
  color: var(--red);
}

/* Drop Zone */
.drop-zone {
  border: 2px dashed #444;
  border-radius: 6px;
  padding: 16px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  margin-bottom: 8px;
}

.drop-zone:hover, .drop-zone.dragover {
  border-color: var(--accent);
  background: rgba(255,153,0,0.05);
}

.drop-zone p { font-size: 0.7rem; color: var(--text-dim); }
.drop-zone .small { font-size: 0.6rem; margin-top: 4px; }

.rom-status { font-size: 0.6rem; margin-bottom: 6px; }
.rom-status div { padding: 2px 0; }
.rom-ok { color: var(--green); }
.rom-missing { color: var(--text-dim); }

/* Cassette */
.cassette-visual { margin: 8px 0; }

.cassette-body {
  background: linear-gradient(180deg, #3a3530, #2a2520);
  border-radius: 8px;
  padding: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  border: 1px solid #4a4540;
}

.reel {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #555;
  border: 2px solid #777;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.1s linear;
}

.reel-inner {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #333;
  border: 1px solid #666;
}

.reel.spinning { animation: spin 0.5s linear infinite; }

@keyframes spin { to { transform: rotate(360deg); } }

.tape-window {
  width: 50px;
  height: 20px;
  background: rgba(80,60,40,0.5);
  border-radius: 2px;
  border: 1px solid #555;
}

.cassette-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 6px;
}

.cassette-info { margin-top: 6px; }

.progress-bar {
  height: 4px;
  background: #222;
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 4px;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: var(--accent);
  transition: width 0.2s;
}

.small { font-size: 0.6rem; color: var(--text-dim); }

.baud-select {
  margin-top: 6px;
  font-size: 0.6rem;
}

.baud-select select {
  background: #222;
  color: var(--text);
  border: 1px solid #444;
  font-family: inherit;
  font-size: 0.6rem;
  padding: 2px 4px;
}

/* CRT Display */
.crt-bezel {
  background: linear-gradient(145deg, #3a3530 0%, #2a2520 50%, #201c18 100%);
  border-radius: 20px;
  padding: 20px;
  box-shadow: 
    inset 0 2px 4px rgba(255,255,255,0.1),
    0 8px 32px rgba(0,0,0,0.6);
  position: relative;
  border: 2px solid #4a4540;
}

.crt-inner {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  background: var(--crt-bg);
  box-shadow: inset 0 0 40px rgba(0,0,0,0.8);
}

#screen {
  display: block;
  width: 100%;
  height: auto;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

.scanlines {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  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;
}

.crt-vignette {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(ellipse at center, transparent 60%, rgba(0,0,0,0.6) 100%);
  pointer-events: none;
}

.bezel-label {
  text-align: center;
  font-family: 'Orbitron', sans-serif;
  font-size: 0.6rem;
  color: #5a5550;
  letter-spacing: 4px;
  margin-top: 8px;
}

/* Keyboard */
.keyboard {
  margin-top: 8px;
  background: linear-gradient(180deg, #c8c0b0, #b0a898);
  border-radius: 10px;
  padding: 10px;
  box-shadow: 
    inset 0 1px 2px rgba(255,255,255,0.3),
    0 4px 16px rgba(0,0,0,0.4);
  border: 2px solid #a09888;
}

.key-row {
  display: flex;
  justify-content: center;
  gap: 3px;
  margin-bottom: 3px;
}

.key {
  background: linear-gradient(180deg, #e8e0d0, #d4cfc0);
  color: var(--key-text);
  border: 1px solid var(--key-border);
  border-bottom: 3px solid #706860;
  border-radius: 4px;
  padding: 4px 6px;
  min-width: 32px;
  height: 32px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.55rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  user-select: none;
  transition: all 0.05s;
  text-align: center;
  line-height: 1;
}

.key:active, .key.pressed {
  transform: translateY(2px);
  border-bottom-width: 1px;
  background: linear-gradient(180deg, #c8c0b0, #b8b0a0);
}

.key.modifier-active {
  background: linear-gradient(180deg, #ffaa33, #ee8800);
  border-color: #cc6600;
  color: #fff;
}

.key.wide { min-width: 60px; }
.key.wider { min-width: 80px; }
.key.space { flex: 1; min-width: 200px; }

/* Speed Controls */
.speed-controls { display: flex; gap: 4px; margin-bottom: 6px; flex-wrap: wrap; }
.speed-btn.active { background: var(--accent-dim); border-color: var(--accent); color: var(--accent); }
.speed-display { font-size: 0.6rem; color: var(--text-dim); }
.power-controls { display: flex; flex-direction: column; gap: 6px; margin-bottom: 10px; }

/* Audio */
.volume-slider {
  width: 100%;
  margin-top: 6px;
  accent-color: var(--accent);
}

/* Debug */
.debug-toggle { cursor: pointer; user-select: none; }
.debug-content.hidden { display: none; }

.registers {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  font-size: 0.6rem;
  margin-bottom: 6px;
  font-variant-numeric: tabular-nums;
}

.registers span {
  color: var(--green);
  font-weight: 700;
}

#reg-flags { font-size: 0.5rem; color: var(--text-dim); }

.debug-buttons { display: flex; gap: 4px; margin-bottom: 6px; }

.breakpoint-field, .hex-viewer {
  font-size: 0.6rem;
  margin-bottom: 6px;
}

.breakpoint-field input, .hex-addr {
  background: #111;
  color: var(--green);
  border: 1px solid #333;
  font-family: inherit;
  font-size: 0.6rem;
  width: 50px;
  padding: 2px 4px;
}

.hex-dump {
  font-size: 0.5rem;
  color: var(--green);
  background: #0a0a0a;
  padding: 4px;
  border-radius: 3px;
  max-height: 180px;
  overflow-y: auto;
  line-height: 1.4;
  margin-top: 4px;
  white-space: pre;
}

.state-panel .btn { margin-right: 4px; margin-bottom: 4px; }

/* Status Bar */
#status-bar {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding: 6px 12px;
  background: #151515;
  border: 1px solid var(--panel-border);
  border-radius: 4px;
  margin-top: 8px;
  font-size: 0.6rem;
  color: var(--text-dim);
}

#status-bar span span { color: var(--green); }

/* Footer */
footer {
  text-align: center;
  padding: 16px;
  font-size: 0.6rem;
  color: var(--text-dim);
}

footer a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 700;
}

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

.footer-note { display: block; margin-top: 4px; font-size: 0.55rem; }

/* Responsive */
@media (max-width: 1100px) {
  #main-area {
    grid-template-columns: 1fr;
  }
  #left-panel, #right-panel {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }
}

@media (max-width: 768px) {
  #main-area { grid-template-columns: 1fr; }
  #left-panel, #right-panel {
    grid-template-columns: 1fr;
  }
  .header-title h1 { font-size: 1.2rem; letter-spacing: 2px; }
  .crt-bezel { padding: 10px; border-radius: 12px; }
  .key { min-width: 24px; height: 28px; font-size: 0.45rem; padding: 2px 3px; }
  .key.wide { min-width: 44px; }
  .key.wider { min-width: 60px; }
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: #111; }
::-webkit-scrollbar-thumb { background: #333; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #555; }