:root {
  --bg: #0a0b14;
  --panel: #14162a;
  --ink: #e8e8ff;
  --dim: #8a8ac0;
  --accent: #d8d800;
  --red: #d80000;
  --cyan: #00d8d8;
  --border: #2a2c50;
}

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

body {
  background:
    radial-gradient(circle at 20% 10%, #1a1030 0%, transparent 50%),
    radial-gradient(circle at 80% 90%, #06182a 0%, transparent 55%),
    var(--bg);
  color: var(--ink);
  font-family: 'VT323', monospace;
  font-size: 20px;
  min-height: 100vh;
  padding-bottom: 40px;
}

.stripe-top {
  height: 6px;
  background: linear-gradient(90deg,
    var(--red) 0 20%, var(--accent) 20% 40%,
    #00d800 40% 60%, var(--cyan) 60% 80%, #d800d8 80% 100%);
}

/* Header */
header { text-align: center; padding: 28px 16px 12px; }
.rainbow-bar {
  display: inline-flex; gap: 0; margin-bottom: 14px;
  transform: skewX(-18deg); box-shadow: 0 0 24px #00d8d855;
}
.rainbow-bar span { width: 40px; height: 22px; display: block; }
h1 {
  font-family: 'Press Start 2P', monospace;
  font-size: clamp(18px, 5vw, 38px);
  color: var(--accent);
  text-shadow: 3px 3px 0 var(--red), 6px 6px 0 #00000088;
  letter-spacing: 2px;
}
.subtitle { color: var(--cyan); font-size: 22px; margin-top: 14px; }

main { max-width: 1100px; margin: 0 auto; padding: 20px 16px; }

/* Panels */
.panels {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 22px;
}
@media (max-width: 800px) {
  .panels { grid-template-columns: 1fr; }
}

.panel {
  background: var(--panel);
  border: 2px solid var(--border);
  border-radius: 6px;
  padding: 16px;
  box-shadow: inset 0 0 0 1px #ffffff08;
}
.panel h2 {
  font-family: 'Press Start 2P', monospace;
  font-size: 11px;
  color: var(--cyan);
  margin-bottom: 14px;
  letter-spacing: 1px;
}

/* Dropzone */
.dropzone {
  border: 3px dashed var(--border);
  border-radius: 6px;
  padding: 26px 12px;
  text-align: center;
  cursor: pointer;
  transition: all .15s;
  background: #0d0e1c;
}
.dropzone:hover, .dropzone.drag { border-color: var(--accent); background: #16182e; }
.dropzone.loaded { border-color: #00d800; border-style: solid; }
.dz-text { color: var(--accent); font-size: 22px; letter-spacing: 1px; }
.dz-sub { color: var(--dim); font-size: 17px; }

.src-actions { margin: 14px 0; }

/* Buttons */
.btn {
  font-family: 'VT323', monospace;
  font-size: 19px;
  color: var(--ink);
  background: linear-gradient(#2a2c50, #1a1c38);
  border: 2px solid #3a3c68;
  border-bottom-width: 4px;
  border-radius: 5px;
  padding: 8px 16px;
  cursor: pointer;
  letter-spacing: 1px;
  transition: all .1s;
}
.btn:hover { background: linear-gradient(#34365e, #212342); color: var(--accent); }
.btn:active { transform: translateY(2px); border-bottom-width: 2px; }
.btn.accent {
  background: linear-gradient(#e0e000, #b0b000);
  color: #111; border-color: #ffff40;
}
.btn.accent:hover { color: #000; background: linear-gradient(#f0f020, #c0c000); }
.btn.small { font-size: 17px; padding: 6px 12px; }
.btn:disabled { opacity: .5; cursor: wait; }

/* Source mini bezel */
.bezel.mini {
  background: #050510;
  border: 6px solid #1a1a28;
  border-radius: 8px;
  padding: 6px;
  display: flex; justify-content: center;
}
.bezel.mini canvas { max-width: 100%; display: block; border-radius: 2px; }

/* CRT bezel */
.crt-bezel {
  background: linear-gradient(145deg, #2a2a30, #101014);
  border-radius: 20px;
  padding: 22px 22px 30px;
  box-shadow: 0 12px 40px #000a, inset 0 2px 6px #ffffff12;
  position: relative;
}
.crt-glass {
  position: relative;
  background: #000;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: inset 0 0 30px #000, inset 0 0 60px #001a1a;
  display: flex; justify-content: center;
}
.crt-glass canvas {
  max-width: 100%;
  display: block;
  border-radius: 12% / 16%;
  transition: border-radius .2s;
}
.crt-vignette {
  position: absolute; inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse at center, transparent 55%, #000c 100%),
    linear-gradient(rgba(255,255,255,0.03), transparent 40%);
  transition: opacity .2s;
}
.crt-brand {
  text-align: center; color: #55556a;
  font-size: 15px; margin-top: 12px; letter-spacing: 3px;
}
.out-actions { display: flex; gap: 10px; margin-top: 14px; }

/* Presets */
.presets {
  display: flex; flex-wrap: wrap; gap: 8px; align-items: center;
  margin: 26px 0 6px;
}
.preset-label { color: var(--dim); letter-spacing: 2px; margin-right: 6px; }

/* Explainer */
.explainer { margin: 14px 0 4px; }
.explainer details {
  background: var(--panel);
  border: 2px solid var(--border);
  border-radius: 6px;
  padding: 10px 16px;
}
.explainer summary {
  cursor: pointer; color: var(--accent); letter-spacing: 1px;
  font-size: 18px; list-style: none;
}
.explainer summary::-webkit-details-marker { display: none; }
.explainer p {
  color: var(--dim); font-size: 18px; line-height: 1.4;
  margin-top: 10px;
}
.explainer p em { color: var(--cyan); font-style: normal; }
.explainer p strong { color: var(--ink); }

/* Controls */
.controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px 26px;
  margin-top: 18px;
  background: var(--panel);
  border: 2px solid var(--border);
  border-radius: 6px;
  padding: 22px;
}
.ctrl label {
  display: flex; justify-content: space-between; align-items: center;
  color: var(--cyan); font-size: 18px; letter-spacing: 1px; margin-bottom: 8px;
}
.ctrl output { color: var(--accent); font-size: 18px; }

input[type=range] {
  -webkit-appearance: none; appearance: none;
  width: 100%; height: 8px;
  background: #0d0e1c; border: 1px solid var(--border); border-radius: 4px;
  outline: none;
}
input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 18px; height: 24px; border-radius: 3px;
  background: linear-gradient(var(--accent), #a0a000);
  border: 1px solid #ffff40; cursor: pointer;
}
input[type=range]::-moz-range-thumb {
  width: 18px; height: 24px; border-radius: 3px;
  background: var(--accent); border: 1px solid #ffff40; cursor: pointer;
}

.toggles { display: flex; flex-direction: column; gap: 10px; justify-content: center; }
.toggle {
  display: flex !important; justify-content: flex-start !important;
  gap: 10px; cursor: pointer; color: var(--ink) !important;
}
.toggle input { width: 18px; height: 18px; accent-color: var(--accent); }

/* Footer */
footer {
  text-align: center; margin-top: 34px; color: var(--dim);
  font-size: 18px; letter-spacing: 1px;
}
footer a { color: var(--cyan); text-decoration: none; border-bottom: 1px dotted var(--cyan); }
footer a:hover { color: var(--accent); border-color: var(--accent); }