:root {
  --stage: 12 12 15;
  --panel: 27 27 32;
  --line: 255 255 255;
  --ink: 235 235 238;
  --muted: 150 147 156;
  --accent: 245 197 66;

  --ease-out-expo: cubic-bezier(0.19, 1, 0.22, 1);
  --ease-out-quad: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2.5rem 1.25rem;
  background: rgb(var(--stage));
  color: rgb(var(--ink));
  font-family: 'Space Grotesk', sans-serif;
}

.page {
  width: 100%;
  max-width: 420px;
}

.page-eyebrow {
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgb(var(--accent));
  font-weight: 500;
  margin-bottom: 0.35rem;
}

.page-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.page-lede {
  font-size: 0.85rem;
  color: rgb(var(--muted));
  margin-bottom: 1.5rem;
}

.page-lede code {
  font-family: 'JetBrains Mono', monospace;
  color: rgb(var(--ink));
}

/* ---------- Stage ---------- */
.stage {
  position: relative;
  height: 220px;
  border-radius: 16px;
  overflow: hidden;
  background: linear-gradient(180deg, rgb(20 20 24), rgb(var(--stage)) 70%);
  border: 1px solid rgb(var(--line) / 0.06);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding-bottom: 3.5rem;
}

.stage-glow {
  position: absolute;
  top: 12%;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgb(var(--accent) / 0.22), transparent 70%);
  filter: blur(4px);
  pointer-events: none;
}

.stage-box {
  position: relative;
  z-index: 1;
  width: 92px;
  height: 92px;
  border-radius: 14px;
  background: rgb(244 243 240);
}

.stage-floor {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgb(var(--line) / 0.14), transparent);
}

/* ---------- Console ---------- */
.console {
  margin-top: 1.25rem;
  padding: 1.5rem 1.25rem 1.25rem;
  border-radius: 16px;
  background: rgb(var(--panel));
  background-image:
    radial-gradient(circle, rgb(var(--line) / 0.14) 1.5px, transparent 1.5px),
    radial-gradient(circle, rgb(var(--line) / 0.14) 1.5px, transparent 1.5px),
    radial-gradient(circle, rgb(var(--line) / 0.14) 1.5px, transparent 1.5px),
    radial-gradient(circle, rgb(var(--line) / 0.14) 1.5px, transparent 1.5px);
  background-size: 4px 4px;
  background-position:
    10px 10px,
    calc(100% - 10px) 10px,
    10px calc(100% - 10px),
    calc(100% - 10px) calc(100% - 10px);
  background-repeat: no-repeat;
  border: 1px solid rgb(var(--line) / 0.06);
  box-shadow: 0 24px 46px -26px rgb(0 0 0 / 0.7);
}

.faders {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.fader {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.fader-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.68rem;
  color: rgb(var(--accent));
  min-height: 1em;
}

.fader-label {
  font-size: 0.6rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgb(var(--muted));
  text-align: center;
}

.fader input[type='range'] {
  appearance: none;
  writing-mode: vertical-lr;
  direction: rtl;
  width: 20px;
  height: 130px;
  background: transparent;
  cursor: pointer;
}

.fader input[type='range']::-webkit-slider-runnable-track {
  width: 5px;
  background: rgb(var(--line) / 0.1);
  border-radius: 999px;
}

.fader input[type='range']::-webkit-slider-thumb {
  appearance: none;
  width: 20px;
  height: 11px;
  border-radius: 3px;
  background: rgb(var(--accent));
  box-shadow: 0 0 10px rgb(var(--accent) / 0.55);
  margin-left: -7.5px;
}

.fader input[type='range']::-moz-range-track {
  width: 5px;
  background: rgb(var(--line) / 0.1);
  border-radius: 999px;
}

.fader input[type='range']::-moz-range-thumb {
  width: 20px;
  height: 11px;
  border: none;
  border-radius: 3px;
  background: rgb(var(--accent));
  box-shadow: 0 0 10px rgb(var(--accent) / 0.55);
}

.gels {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding-top: 1.1rem;
  border-top: 1px solid rgb(var(--line) / 0.07);
}

.gels-label {
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgb(var(--muted));
}

.gel-row {
  display: flex;
  gap: 0.5rem;
}

.gel {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  padding: 0;
  transition: transform 150ms var(--ease-out-quad);
}

.gel:hover {
  transform: scale(1.12);
}

.gel.is-active {
  border-color: rgb(var(--line) / 0.7);
  box-shadow: 0 0 0 2px rgb(var(--panel));
}

/* ---------- Cue / code output ---------- */
.cue {
  margin-top: 1.25rem;
  padding: 1rem 1.1rem;
  border-radius: 12px;
  background: rgb(0 0 0 / 0.3);
  border: 1px solid rgb(var(--line) / 0.06);
}

.cue-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgb(var(--muted));
  margin-bottom: 0.6rem;
}

.cue #css-code {
  display: block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  line-height: 1.5;
  color: rgb(var(--ink));
  word-break: break-all;
}

.copy-btn {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.68rem;
  color: rgb(var(--muted));
  background: rgb(var(--line) / 0.06);
  border: 1px solid rgb(var(--line) / 0.1);
  border-radius: 6px;
  padding: 0.3rem 0.6rem;
  cursor: pointer;
  transition:
    color 150ms ease,
    border-color 150ms ease,
    transform 150ms var(--ease-out-quad);
}

.copy-btn:hover {
  color: rgb(var(--accent));
  border-color: rgb(var(--accent) / 0.4);
}

.copy-btn.is-copied {
  color: rgb(var(--accent));
  border-color: rgb(var(--accent) / 0.5);
  animation: pulse 300ms var(--ease-out-quad);
}

@keyframes pulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.08);
  }
  100% {
    transform: scale(1);
  }
}

@media (prefers-reduced-motion: reduce) {
  .copy-btn.is-copied {
    animation: none;
  }
}

@media (max-width: 420px) {
  .faders {
    gap: 0.2rem;
  }

  .fader input[type='range'] {
    height: 100px;
  }
}