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

:root {
  --bg: #080810;
  --panel-bg: #0d0d18;
  --border: #1a1a2e;
  --green: #33ff66;
  --amber: #ffaa00;
  --cyan: #00ccff;
  --red: #ff4466;
  --blue: #4488ff;
  --white: #f0e8d0;
  --dim: #667766;
  --glow-green: 0 0 8px #33ff6644, 0 0 2px #33ff6688;
  --glow-amber: 0 0 8px #ffaa0044;
  --glow-cyan: 0 0 8px #00ccff44;
  --font-display: 'VT323', monospace;
  --font-mono: 'Share Tech Mono', monospace;
}

html, body {
  height:100%;
  background: var(--bg);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 13px;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0,0,0,0.03) 2px, rgba(0,0,0,0.03) 4px);
  pointer-events: none;
  z-index: 9999;
}

#app { display:flex; flex-direction:column; min-height:100vh; }

/* HEADER */
#header {
  padding: 10px 20px;
  background: linear-gradient(180deg, #0f0f1a 0%, #080810 100%);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 20px; flex-wrap: wrap;
}
.header-left { display:flex; align-items:center; gap:12px; }
.title {
  font-family: var(--font-display);
  font-size: 36px;
  color: var(--green);
  text-shadow: var(--glow-green);
  letter-spacing: 4px;
}
.subtitle { font-size: 11px; color: var(--dim); letter-spacing: 2px; text-transform: uppercase; }
#colorburst-icon { opacity: 0.8; }

/* SOURCE BADGE */
.source-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 2px;
  padding: 3px 8px;
  border-radius: 3px;
  border: 1px solid #333;
}
.source-badge[data-mode="image"] { color: var(--green); border-color: #1a3a1a; background:#0a180a; text-shadow: var(--glow-green); }
.source-badge[data-mode="pattern"] { color: var(--cyan); border-color:#153040; background:#08181e; text-shadow: var(--glow-cyan); }
.source-badge[data-mode="video"] {
  color: var(--green); border-color:#1a3a1a; background:#0a180a; text-shadow: var(--glow-green);
  animation: badge-pulse 1.2s ease-in-out infinite;
}
@keyframes badge-pulse { 0%,100%{ opacity:1; } 50%{ opacity:0.4; } }

/* MAIN LAYOUT */
#main-layout { flex: 1; display: flex; gap: 0; overflow: hidden; }

/* PANELS */
.panel {
  width: 220px; min-width: 200px;
  background: var(--panel-bg);
  border-right: 1px solid var(--border);
  padding: 10px; overflow-y: auto; flex-shrink: 0;
}
#right-panel { border-right:none; border-left:1px solid var(--border); }

.panel-header {
  font-family: var(--font-display);
  font-size: 18px; color: var(--amber);
  text-shadow: var(--glow-amber);
  letter-spacing: 3px; padding: 4px 0;
  border-bottom: 1px solid #2a2a1a; margin-bottom: 8px;
}
.control-group { margin-bottom: 10px; }
.hw-label { display: block; font-size: 10px; color: var(--dim); letter-spacing: 2px; margin-bottom: 4px; text-transform: uppercase; }

.hw-button, .hw-btn-sm {
  display: block; width: 100%; padding: 8px 10px;
  background: linear-gradient(180deg, #222233 0%, #181825 100%);
  color: var(--green); border: 1px solid #333344; border-radius: 4px;
  font-family: var(--font-mono); font-size: 12px; cursor: pointer; text-align: center;
  letter-spacing: 1px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.05), 0 2px 4px rgba(0,0,0,0.4);
  transition: all 0.15s;
}
.hw-button:hover, .hw-btn-sm:hover { background: linear-gradient(180deg, #2a2a3f 0%, #1e1e30 100%); border-color: var(--green); box-shadow: var(--glow-green); }
.hw-button:active, .hw-btn-sm:active { transform: translateY(1px); }
.hw-btn-sm { width: auto; padding: 4px 10px; font-size:11px; }

.reprocess-btn { width:100%; margin-top:6px; color: var(--amber); }
.reprocess-btn:hover { border-color: var(--amber); box-shadow: var(--glow-amber); }

.btn-row { display:flex; gap:4px; }
.btn-grid { display:grid; grid-template-columns:1fr 1fr; gap:4px; }

/* DROP ZONE (NEW) */
.drop-zone {
  margin-top: 6px;
  border: 1px dashed #2a3a4a;
  border-radius: 4px;
  padding: 10px 6px;
  text-align: center;
  background: repeating-linear-gradient(45deg, #0a0a16, #0a0a16 6px, #0c0c1a 6px, #0c0c1a 12px);
  cursor: pointer;
  transition: all 0.2s;
}
.drop-zone:hover { border-color: var(--cyan); }
.drop-zone.drag-over {
  border-color: var(--green);
  box-shadow: var(--glow-green);
  background: #0e1a0e;
}
.drop-hint { font-size: 10px; color: var(--dim); letter-spacing: 1px; line-height:1.5; }
.drop-sub { font-size: 9px; color:#445; }

.pattern-btn, .std-btn, .preset-btn {
  padding: 5px 6px; background: #151522; border: 1px solid #2a2a3a; border-radius: 3px;
  color: var(--dim); font-family: var(--font-mono); font-size: 10px; cursor: pointer;
  transition: all 0.15s; letter-spacing: 1px;
}
.pattern-btn:hover, .std-btn:hover, .preset-btn:hover { border-color:#555; color:var(--white); }
.pattern-btn.active, .std-btn.active { border-color: var(--green); color: var(--green); box-shadow: var(--glow-green); background: #112211; }
.preset-btn:hover { border-color: var(--amber); color: var(--amber); }

.file-info { font-size:10px; color:var(--dim); margin-top:4px; word-break: break-word; }

.video-preview-wrap { background: #000; border: 1px solid var(--border); border-radius: 3px; overflow: hidden; margin-bottom: 4px; }
#preview-canvas { width:100%; height:auto; display:block; }

.hidden { display:none !important; }

/* PROCESSING INDICATOR */
.processing-indicator { margin-top: 6px; padding: 4px 6px; background: #0a0a16; border: 1px solid #1a2a1a; border-radius: 3px; position: relative; overflow: hidden; }
.beam-line { position: absolute; top: 0; left: 0; width: 100%; height: 2px; background: var(--green); box-shadow: 0 0 6px var(--green); animation: beam-scan 2s linear infinite; opacity: 0.6; }
@keyframes beam-scan { 0% { top: 0; } 100% { top: 100%; } }
.proc-text { font-size: 9px; color: var(--green); letter-spacing: 1px; opacity: 0.7; }

/* SLIDERS */
.hw-slider { -webkit-appearance: none; appearance: none; width: 100%; height: 6px; background: #1a1a2a; border-radius: 3px; border: 1px solid #2a2a3a; outline: none; cursor: pointer; }
.hw-slider::-webkit-slider-thumb { -webkit-appearance: none; appearance: none; width: 14px; height: 14px; background: linear-gradient(180deg, #444455 0%, #222233 100%); border: 1px solid #666; border-radius: 2px; cursor: pointer; }
.hw-slider::-webkit-slider-thumb:hover { border-color: var(--green); }
.readout { font-size: 11px; color: var(--green); text-shadow: var(--glow-green); margin-top: 2px; }
.slider-row { margin: 4px 0; }

/* TOGGLE LABELS */
.toggle-label { display: flex; align-items: center; gap: 6px; font-size: 11px; color: var(--dim); cursor: pointer; padding: 2px 0; }
.toggle-label input { display:none; }
.led { width: 8px; height: 8px; border-radius: 50%; background: #333; border: 1px solid #444; transition: all 0.2s; }
.toggle-label input:checked ~ .led.green { background: var(--green); box-shadow: 0 0 6px var(--green); }
.toggle-label input:checked ~ .led.white { background: #fff; box-shadow: 0 0 6px #fff; }
.toggle-label input:checked ~ .led.blue { background: var(--blue); box-shadow: 0 0 6px var(--blue); }
.toggle-label input:checked ~ .led.red { background: var(--red); box-shadow: 0 0 6px var(--red); }
.toggle-label input:checked ~ .led.amber { background: var(--amber); box-shadow: 0 0 6px var(--amber); }
.toggle-label input:checked ~ .led.cyan { background: var(--cyan); box-shadow: 0 0 6px var(--cyan); }
.toggle-label input:checked ~ span:last-child { color: var(--white); }

/* CENTER AREA */
#center-area { flex: 1; display: flex; flex-direction: column; min-width: 0; padding: 10px; overflow-y: auto; }
.tab-bar { display:flex; gap:2px; margin-bottom:8px; }
.tab { padding: 8px 16px; background: #111120; border: 1px solid var(--border); border-bottom: none; border-radius: 4px 4px 0 0; color: var(--dim); font-family: var(--font-mono); font-size: 11px; cursor: pointer; letter-spacing: 2px; transition: all 0.15s; }
.tab:hover { color:var(--white); }
.tab.active { background: #0a0a1a; color: var(--green); border-color: var(--green); text-shadow: var(--glow-green); }
.tab-content { flex:1; }

/* SCOPE BEZEL */
.scope-bezel { position: relative; background: #050510; border: 2px solid #1a2a1a; border-radius: 8px; padding: 4px; box-shadow: inset 0 0 30px rgba(51,255,102,0.03), 0 0 15px rgba(0,0,0,0.6); overflow: hidden; }
.scope-bezel canvas { width:100%; height:auto; display:block; border-radius:4px; }
.scope-labels { position: absolute; top: 0; left: 8px; bottom: 0; pointer-events: none; }
.scope-label { position: absolute; left: 0; font-size: 9px; color: rgba(255,170,0,0.4); font-family: var(--font-mono); white-space: nowrap; }
.waveform-controls { display: flex; gap: 12px; padding: 8px 0; flex-wrap: wrap; }

/* DECODED VIEW */
.decoded-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 8px; }
.decoded-cell, .channel-cell { background: #050510; border: 1px solid var(--border); border-radius: 4px; padding: 4px; text-align: center; }
.cell-label { font-size: 10px; color: var(--dim); letter-spacing: 2px; margin-bottom: 4px; }
.decoded-cell canvas, .channel-cell canvas { width:100%; height:auto; display:block; cursor:crosshair; }

/* CRT power-on flourish when new media loads */
.power-on { animation: crt-power 0.6s ease-out; }
@keyframes crt-power {
  0%   { filter: brightness(4) contrast(0.2); transform: scaleY(0.02); opacity: 0; }
  35%  { filter: brightness(2) contrast(1); transform: scaleY(1.05); opacity: 1; }
  60%  { transform: scaleY(0.98); }
  100% { filter: brightness(1); transform: scaleY(1); }
}

.decode-info { margin-bottom: 8px; text-align: center; }
.decode-badge { display: inline-block; padding: 3px 10px; background: #0a1a0a; border: 1px solid #1a3a1a; border-radius: 3px; font-size: 10px; color: var(--green); letter-spacing: 1px; text-shadow: var(--glow-green); animation: pulse-badge 3s ease-in-out infinite; }
@keyframes pulse-badge { 0%, 100% { opacity: 0.7; } 50% { opacity: 1; } }
.channel-grid { display: grid; grid-template-columns: 1fr 1fr 1fr 1fr; gap: 6px; }

/* SPECTRUM */
.spectrum-info { display: flex; justify-content: space-between; padding: 4px 8px; font-size: 9px; color: var(--dim); }

/* INFO PANEL */
.info-panel { margin-top: 10px; background: #0a0a16; border: 1px solid var(--border); border-radius: 4px; }
.info-header { padding: 6px 10px; font-size: 11px; color: var(--amber); cursor: pointer; letter-spacing: 2px; }
.info-content { padding: 8px 10px; font-size: 11px; line-height: 1.6; color: var(--dim); }
.info-content.hidden { display:none; }
.info-content strong { color: var(--green); }
.fun-fact { margin-top: 8px; padding: 6px 8px; background: #111118; border-left: 2px solid var(--amber); border-radius: 0 3px 3px 0; font-size: 11px; }
.fun-fact strong { color: var(--amber); }

/* SIGNAL METER */
.signal-meter { margin-top: 12px; }
.meter-label { font-size:10px; color:var(--dim); letter-spacing:2px; margin-bottom:2px; }
.meter-bar { width: 100%; height: 10px; background: #111; border: 1px solid #2a2a3a; border-radius: 2px; overflow: hidden; }
.meter-fill { height: 100%; width: 80%; background: linear-gradient(90deg, var(--green) 0%, var(--green) 60%, var(--amber) 80%, var(--red) 100%); transition: width 0.3s; border-radius: 2px; }

/* FOOTER */
#footer { padding: 10px 20px; background: #0a0a14; border-top: 1px solid var(--border); display: flex; justify-content: center; gap: 20px; font-size: 10px; color: #445544; flex-wrap: wrap; align-items: center; }
#footer a { color: var(--green); text-decoration: none; }
#footer a:hover { text-decoration: underline; }
.footer-joke { font-style: italic; }

/* EASTER EGG */
.easter-egg { position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%); font-family: var(--font-display); font-size: 72px; color: var(--green); text-shadow: 0 0 30px var(--green), 0 0 60px var(--green); z-index: 10000; pointer-events: none; animation: crt-flicker 0.1s infinite; }
.easter-egg.hidden { display: none; }
@keyframes crt-flicker { 0% { opacity:1; } 50% { opacity:0.7; } 100% { opacity:1; } }

/* SCROLLBAR */
::-webkit-scrollbar { width:6px; }
::-webkit-scrollbar-track { background:#080810; }
::-webkit-scrollbar-thumb { background:#222; border-radius:3px; }
::-webkit-scrollbar-thumb:hover { background:#333; }

/* RESPONSIVE */
@media (max-width: 1000px) {
  #main-layout { flex-direction:column; }
  .panel { width:100%; min-width:0; border-right:none; border-bottom:1px solid var(--border); }
  #right-panel { border-left:none; border-top:1px solid var(--border); }
  .channel-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .decoded-grid { grid-template-columns: 1fr; }
  .title { font-size: 24px; }
  .channel-grid { grid-template-columns: 1fr 1fr; }
}