.dslit-lab {
  --dslit-ink: #141722;
  --dslit-muted: rgba(20, 23, 34, 0.62);
  --dslit-line: rgba(20, 23, 34, 0.12);
  --dslit-cyan: #40e0d0;
  --dslit-cyan-ink: #008b82;
  --dslit-amber: #ffcf66;
  --dslit-amber-ink: #a86600;
  --dslit-rose: #ff6f91;
  --dslit-panel: transparent;
  --dslit-track: rgba(20, 23, 34, 0.18);

  display: grid;
  gap: 1rem;
  width: min(100%, 1220px);
  padding: clamp(0.9rem, 3vw, 2rem);
  color: var(--dslit-ink);
  background:
    linear-gradient(120deg, rgba(64, 224, 208, 0.18), transparent 38%),
    linear-gradient(300deg, rgba(255, 207, 102, 0.18), transparent 44%),
    #f7f3ea;
  border: 1px solid rgba(20, 23, 34, 0.08);
  border-radius: 24px;
  box-shadow: 0 28px 70px rgba(45, 37, 24, 0.14);
}

.theme-dark .dslit-lab {
  --dslit-ink: #f9f5ea;
  --dslit-muted: rgba(249, 245, 234, 0.66);
  --dslit-line: rgba(249, 245, 234, 0.14);
  --dslit-panel: rgba(10, 14, 24, 0.54);
  --dslit-track: rgba(249, 245, 234, 0.18);

  background:
    linear-gradient(120deg, rgba(64, 224, 208, 0.16), transparent 38%),
    linear-gradient(300deg, rgba(255, 111, 145, 0.14), transparent 44%),
    #090e18;
  border-color: rgba(255, 255, 255, 0.08);
}

.dslit-stage,
.dslit-panel,
.dslit-readout {
  min-width: 0;
}

.dslit-stage {
  display: grid;
  gap: 0.85rem;
}

.dslit-apparatus {
  position: relative;
  overflow: hidden;
  min-height: 320px;
  border: 1px solid var(--dslit-line);
  border-radius: 18px;
  background:
    repeating-linear-gradient(90deg, transparent 0 42px, rgba(20, 23, 34, 0.045) 42px 43px),
    linear-gradient(180deg, rgba(255, 255, 255, 0.16), transparent);
}

.theme-dark .dslit-apparatus {
  background:
    repeating-linear-gradient(90deg, transparent 0 42px, rgba(249, 245, 234, 0.035) 42px 43px),
    linear-gradient(180deg, rgba(255, 255, 255, 0.05), transparent);
}

#dslit-canvas {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 43 / 26;
}

.dslit-source,
.dslit-screen,
.dslit-barrier {
  position: absolute;
  top: 11%;
  bottom: 11%;
  pointer-events: none;
}

.dslit-source {
  left: 8%;
  width: 10px;
  border-radius: 999px;
  background: linear-gradient(180deg, transparent, var(--dslit-cyan-ink), transparent);
  box-shadow: 0 0 22px rgba(0, 139, 130, 0.42);
}

.theme-dark .dslit-source {
  background: linear-gradient(180deg, transparent, var(--dslit-cyan), transparent);
  box-shadow: 0 0 28px rgba(64, 224, 208, 0.72);
}

.dslit-screen {
  right: 10%;
  width: 12px;
  border-radius: 999px;
  background: linear-gradient(180deg, transparent, rgba(168, 102, 0, 0.9), transparent);
  box-shadow: 0 0 24px rgba(168, 102, 0, 0.28);
}

.theme-dark .dslit-screen {
  background: linear-gradient(180deg, transparent, rgba(255, 207, 102, 0.92), transparent);
  box-shadow: 0 0 34px rgba(255, 207, 102, 0.46);
}

.dslit-barrier {
  left: 38.2%;
  display: grid;
  grid-template-rows: 1fr 34px 0.7fr 34px 1fr;
  width: 18px;
}

.dslit-barrier span {
  display: block;
  background: rgba(20, 23, 34, 0.84);
}

.theme-dark .dslit-barrier span {
  background: rgba(249, 245, 234, 0.82);
}

.dslit-barrier i {
  display: block;
  background: rgba(64, 224, 208, 0.22);
  box-shadow: inset 0 0 16px rgba(64, 224, 208, 0.32);
}

.dslit-mode-strip {
  display: grid;
  grid-template-columns: 1fr minmax(8.5rem, auto) 1fr;
  gap: 0.8rem;
  align-items: center;
  min-height: 2.2rem;
}

.dslit-mode-strip span,
.dslit-kicker,
.dslit-field span,
.dslit-readout span {
  color: var(--dslit-muted);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.dslit-mode-strip span:last-child {
  text-align: right;
}

.dslit-mode-strip strong {
  align-self: center;
  justify-self: center;
  padding: 0.22rem 0;
  border-bottom: 1px solid currentcolor;
  color: var(--dslit-ink);
  font-size: 0.78rem;
  line-height: 1;
  text-align: center;
}

.dslit-panel {
  display: grid;
  gap: 1rem;
  padding: 0.25rem 0 0.25rem 1rem;
  border-left: 1px solid var(--dslit-line);
  background: transparent;
}

.theme-dark .dslit-panel {
  padding: 1rem;
  border: 1px solid var(--dslit-line);
  border-radius: 18px;
  background: var(--dslit-panel);
}

.dslit-toggle {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  min-height: 48px;
  color: var(--dslit-ink);
  font-weight: 750;
  cursor: pointer;
}

.dslit-toggle input {
  width: 46px;
  height: 26px;
  appearance: none;
  border: 1px solid rgba(20, 23, 34, 0.18);
  border-radius: 999px;
  background: rgba(20, 23, 34, 0.045);
  cursor: pointer;
}

.theme-dark .dslit-toggle input {
  border-color: var(--dslit-line);
  background: rgba(249, 245, 234, 0.12);
}

.dslit-toggle input::before {
  display: block;
  width: 20px;
  height: 20px;
  margin: 2px;
  border-radius: 50%;
  background: var(--dslit-cyan-ink);
  transition: transform 180ms ease, background-color 180ms ease;
  content: '';
}

.theme-dark .dslit-toggle input::before {
  background: var(--dslit-ink);
}

.dslit-toggle input:checked::before {
  background: var(--dslit-rose);
  transform: translateX(20px);
}

.dslit-field {
  display: grid;
  gap: 0.55rem;
  width: 100%;
}

.dslit-field output {
  font-size: clamp(2rem, 9vw, 3.2rem);
  font-weight: 760;
  letter-spacing: 0;
  line-height: 0.9;
}

.dslit-field input[type='range'] {
  --fill: 0%;

  width: 100%;
  height: 24px;
  margin: 0;
  appearance: none;
  background: transparent;
  vertical-align: middle;
}

.dslit-field input[type='range']::-webkit-slider-runnable-track {
  height: 3px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--dslit-cyan-ink) 0 var(--fill), var(--dslit-track) var(--fill) 100%);
}

.dslit-field input[type='range']::-webkit-slider-thumb {
  width: 16px;
  height: 16px;
  margin-top: -6.5px;
  appearance: none;
  border: 2px solid #f7f3ea;
  border-radius: 50%;
  background: var(--dslit-cyan-ink);
  box-shadow: 0 0 0 3px rgba(0, 139, 130, 0.08);
  cursor: grab;
}

.theme-dark .dslit-field input[type='range']::-webkit-slider-runnable-track {
  background: linear-gradient(90deg, var(--dslit-cyan) 0 var(--fill), var(--dslit-track) var(--fill) 100%);
}

.theme-dark .dslit-field input[type='range']::-webkit-slider-thumb {
  border-color: #090e18;
  background: var(--dslit-ink);
  box-shadow: 0 0 0 3px rgba(64, 224, 208, 0.08);
}

.dslit-field input[type='range']::-moz-range-track {
  height: 3px;
  border-radius: 999px;
  background: var(--dslit-track);
}

.dslit-field input[type='range']::-moz-range-progress {
  height: 3px;
  border-radius: 999px;
  background: var(--dslit-cyan-ink);
}

.dslit-field input[type='range']::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border: 2px solid #f7f3ea;
  border-radius: 50%;
  background: var(--dslit-cyan-ink);
  box-shadow: 0 0 0 3px rgba(0, 139, 130, 0.08);
  cursor: grab;
}

.theme-dark .dslit-field input[type='range']::-moz-range-progress {
  background: var(--dslit-cyan);
}

.theme-dark .dslit-field input[type='range']::-moz-range-thumb {
  border-color: #090e18;
  background: var(--dslit-ink);
  box-shadow: 0 0 0 3px rgba(64, 224, 208, 0.08);
}

.dslit-readout {
  display: grid;
  gap: 0.75rem;
  align-content: start;
  padding: 0.25rem 0 0.25rem 1rem;
  border-left: 1px solid var(--dslit-line);
}

.dslit-readout article {
  display: grid;
  gap: 0.32rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--dslit-line);
}

.dslit-readout strong {
  font-size: clamp(2rem, 8vw, 3.7rem);
  line-height: 0.86;
}

.dslit-readout p {
  max-width: 42ch;
  margin: 0;
  color: var(--dslit-muted);
  font-size: 0.88rem;
  line-height: 1.58;
}

@media (min-width: 940px) {
  .dslit-lab {
    grid-template-columns: minmax(0, 1.55fr) minmax(250px, 0.62fr) minmax(230px, 0.54fr);
    align-items: start;
  }
}