:root {
  --accent: #00ff41;
  --accent-dim: #0a3d0a;
  --accent-mid: #00aa2a;
  --bg: #050505;
  --panel-bg: #0e0e0e;
  --panel-border: #0a3d0a;
  --text: #00ff41;
  --text-dim: #006618;
  --font-main: 'VT323', monospace;
  --font-title: 'Press Start 2P', monospace;
}

body.amber {
  --accent: #ffb000;
  --accent-dim: #3d2a00;
  --accent-mid: #cc8800;
  --text: #ffb000;
  --text-dim: #664400;
  --panel-border: #3d2a00;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-main);
  font-size: 18px;
  min-height: 100vh;
  overflow-x: hidden;
  background-image: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0,255,65,0.015) 2px,
    rgba(0,255,65,0.015) 4px
  );
}

body.amber {
  background-image: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(255,176,0,0.015) 2px,
    rgba(255,176,0,0.015) 4px
  );
}

#header {
  background: #0a0a0a;
  border-bottom: 1px solid var(--panel-border);
  padding: 12px 20px;
}

.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

.title-area {
  display: flex;
  align-items: center;
  gap: 14px;
}

h1 {
  font-family: var(--font-title);
  font-size: 16px;
  letter-spacing: 2px;
  color: var(--accent);
  text-shadow: 0 0 10px var(--accent);
}

.subtitle {
  font-size: 14px;
  color: var(--text-dim);
  margin-top: 4px;
}

.theme-toggle {
  display: flex;
  gap: 8px;
}

.retro-btn {
  font-family: var(--font-main);
  font-size: 16px;
  color: var(--text);
  background: #1a1a1a;
  border: 2px solid var(--accent-dim);
  padding: 6px 14px;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: all 0.1s;
  box-shadow: inset 0 -3px 0 rgba(0,0,0,0.4), 0 2px 4px rgba(0,0,0,0.5);
}
.retro-btn:hover {
  background: #222;
  border-color: var(--accent-mid);
  text-shadow: 0 0 6px var(--accent);
}
.retro-btn:active {
  box-shadow: inset 0 2px 0 rgba(0,0,0,0.4);
  transform: translateY(1px);
}
.retro-btn.active {
  background: var(--accent-dim);
  border-color: var(--accent);
  text-shadow: 0 0 8px var(--accent);
}

/* Upload Zone */
.upload-zone {
  max-width: 700px;
  margin: 60px auto;
  padding: 20px;
}
.upload-zone.hidden { display: none; }

.test-pattern-border {
  border: 4px solid var(--accent-dim);
  padding: 4px;
  background: repeating-linear-gradient(
    90deg,
    var(--accent-dim) 0px,
    var(--accent-dim) 8px,
    transparent 8px,
    transparent 16px
  );
}

.upload-inner {
  background: #0a0a0a;
  padding: 50px 30px;
  text-align: center;
  border: 2px dashed var(--accent-dim);
}

.upload-inner.dragover {
  border-color: var(--accent);
  background: rgba(0,255,65,0.03);
}

.tv-bars {
  display: flex;
  height: 30px;
  margin-bottom: 30px;
  gap: 2px;
}
.tv-bars span { flex: 1; }

.upload-text {
  font-family: var(--font-title);
  font-size: 14px;
  color: var(--accent);
  text-shadow: 0 0 10px var(--accent);
  margin-bottom: 10px;
}
.upload-sub { color: var(--text-dim); margin-bottom: 12px; }
.upload-btn { display: inline-block; font-size: 20px; padding: 10px 30px; }
.upload-formats { color: var(--text-dim); margin-top: 16px; font-size: 14px; }

/* Main Layout */
main.hidden { display: none; }

.panels {
  max-width: 1400px;
  margin: 20px auto;
  display: flex;
  gap: 20px;
  padding: 0 20px;
  flex-wrap: wrap;
}

.panel-left { flex: 1 1 640px; min-width: 320px; }
.panel-right { flex: 0 0 440px; min-width: 280px; display: flex; flex-direction: column; gap: 12px; }

/* CRT Bezel */
.crt-bezel {
  background: linear-gradient(145deg, #2a2a2a 0%, #1a1a1a 30%, #111 100%);
  border-radius: 24px;
  padding: 24px 24px 12px;
  box-shadow: 
    0 0 0 3px #333,
    0 0 0 6px #1a1a1a,
    0 8px 30px rgba(0,0,0,0.8),
    inset 0 1px 0 rgba(255,255,255,0.05);
}

.crt-screen-wrap {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: inset 0 0 40px rgba(0,0,0,0.8), 0 0 2px var(--accent-dim);
  background: #000;
}

#crt-display {
  display: block;
  width: 100%;
  height: auto;
  image-rendering: auto;
}

.crt-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg,
    transparent 0px,
    transparent 2px,
    rgba(0,0,0,0.12) 2px,
    rgba(0,0,0,0.12) 4px
  );
  border-radius: 12px;
}

.crt-reflection {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(
    135deg,
    rgba(255,255,255,0.04) 0%,
    transparent 40%,
    transparent 60%,
    rgba(255,255,255,0.015) 100%
  );
  border-radius: 12px;
}

.scanline-indicator {
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent);
  opacity: 0.7;
  top: 50%;
  cursor: ns-resize;
  z-index: 5;
  box-shadow: 0 0 6px var(--accent);
}

.no-signal {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-title);
  font-size: 20px;
  color: #aaa;
  text-shadow: 0 0 10px #aaa;
  background: rgba(0,0,0,0.85);
  z-index: 10;
  animation: flicker 0.15s infinite;
}
.no-signal.hidden { display: none; }

@keyframes flicker {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.85; }
}

.poweroff-anim {
  position: absolute;
  inset: 0;
  background: #000;
  z-index: 20;
}
.poweroff-anim.hidden { display: none; }

.bezel-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 8px 4px;
}

.bezel-dial {
  cursor: grab;
  text-align: center;
}
.dial-knob {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(145deg, #444, #222);
  border: 2px solid #555;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
  transition: transform 0.1s;
}
.dial-marker {
  display: block;
  width: 2px;
  height: 14px;
  background: #999;
  border-radius: 1px;
  transform-origin: center bottom;
}
.dial-label {
  font-size: 12px;
  color: #666;
  margin-top: 2px;
  display: block;
}

.bezel-brand {
  font-family: var(--font-title);
  font-size: 10px;
  color: #555;
  letter-spacing: 3px;
}

.bezel-indicator { font-size: 14px; color: #555; display: flex; align-items: center; gap: 6px; }
.led {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 6px var(--accent);
}

/* Playback Controls */
.playback-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  flex-wrap: wrap;
}

.playback-controls input[type="range"] {
  flex: 1;
  min-width: 100px;
}

.time-display {
  font-size: 16px;
  color: var(--accent);
  white-space: nowrap;
}

/* Analyzer Panels */
.analyzer-section {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  padding: 10px;
  box-shadow: inset 0 0 15px rgba(0,0,0,0.5);
}
.analyzer-section h3 {
  font-family: var(--font-main);
  font-size: 16px;
  color: var(--text-dim);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 2px;
}
.analyzer-section canvas {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 4px;
  background: #000;
}

.channel-strip {
  display: flex;
  gap: 6px;
}
.channel-strip > div {
  flex: 1;
  text-align: center;
}
.channel-strip canvas {
  width: 100%;
  height: auto;
  border-radius: 3px;
}
.channel-strip span {
  font-size: 12px;
  color: var(--text-dim);
  display: block;
  margin-top: 2px;
}

/* Controls Panel */
.controls-panel {
  max-width: 1400px;
  margin: 20px auto;
  padding: 0 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.control-group {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  padding: 14px;
  flex: 1 1 250px;
  min-width: 220px;
}
.control-group h3 {
  font-size: 16px;
  color: var(--accent);
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 2px;
  text-shadow: 0 0 6px var(--accent-dim);
}

.control-group label {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  font-size: 16px;
  color: var(--text);
  flex-wrap: wrap;
}
.control-group label span {
  color: var(--accent);
  min-width: 40px;
  text-align: right;
}

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  background: #1a1a1a;
  border: 1px solid var(--accent-dim);
  border-radius: 3px;
  outline: none;
  flex: 1;
  min-width: 80px;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  box-shadow: 0 0 6px var(--accent);
}
input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: none;
}

input[type="checkbox"] {
  accent-color: var(--accent);
  width: 18px;
  height: 18px;
}

.toggle-label {
  cursor: pointer;
}

.mode-buttons, .demod-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.mode-btn, .demod-btn {
  font-size: 13px;
  padding: 5px 10px;
}

.hue-tooltip {
  position: fixed;
  background: #1a1a1a;
  border: 1px solid var(--accent);
  color: var(--accent);
  padding: 6px 12px;
  border-radius: 4px;
  font-size: 16px;
  z-index: 100;
  pointer-events: none;
  text-shadow: 0 0 8px var(--accent);
}
.hue-tooltip.hidden { display: none; }

/* Info Panel */
.info-panel {
  max-width: 1400px;
  margin: 20px auto;
  padding: 0 20px;
}

.info-section {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  margin-bottom: 8px;
}
.info-section summary {
  padding: 12px 16px;
  cursor: pointer;
  font-size: 18px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1px;
}
.info-section summary:hover { text-shadow: 0 0 8px var(--accent); }
.info-content {
  padding: 0 16px 16px;
  color: var(--text-dim);
  line-height: 1.6;
}
.info-content strong { color: var(--accent); }
.info-content em { color: var(--accent-mid); font-style: italic; }

.signal-flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin-bottom: 12px;
  font-size: 16px;
  color: var(--accent);
}
.signal-flow span {
  background: var(--accent-dim);
  padding: 3px 10px;
  border-radius: 3px;
  border: 1px solid var(--panel-border);
}

footer {
  text-align: center;
  padding: 20px;
  border-top: 1px solid var(--panel-border);
  margin-top: 30px;
  color: var(--text-dim);
  font-size: 14px;
}
footer a {
  color: var(--accent);
  text-decoration: none;
}
footer a:hover { text-shadow: 0 0 8px var(--accent); }
.disclaimer { font-size: 12px; margin-top: 6px; opacity: 0.5; }

.hidden { display: none !important; }

/* Responsive */
@media (max-width: 900px) {
  .panels { flex-direction: column; }
  .panel-right { flex: 1 1 auto; }
  h1 { font-size: 12px; }
  .controls-panel { flex-direction: column; }
}

@media (max-width: 500px) {
  .crt-bezel { padding: 12px 12px 8px; border-radius: 16px; }
  .upload-zone { margin: 20px 10px; }
  .panels { padding: 0 10px; }
  .controls-panel { padding: 0 10px; }
  .info-panel { padding: 0 10px; }
}