:root {
  color-scheme: dark;
  font-family: Inter, Pretendard, "SUIT Variable", "Noto Sans KR", sans-serif;
  background: #07090c;
  color: #f4f5f6;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
}

body {
  background:
    radial-gradient(circle at 50% -20%, rgb(67 77 91 / 22%), transparent 42rem),
    #07090c;
  overflow-x: hidden;
}

button,
input {
  font: inherit;
}

button {
  color: inherit;
}

.lab-header {
  min-height: 64px;
  padding: 0 32px;
  border-bottom: 1px solid rgb(255 255 255 / 10%);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background: rgb(7 9 12 / 88%);
  backdrop-filter: blur(18px);
}

.lab-header > p,
.lab-eyebrow,
.viewer__heading p,
.lab-hint {
  margin: 0;
  color: #8c96a3;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.17em;
  text-transform: uppercase;
}

.lab-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.06em;
}

.lab-brand__mark {
  width: 25px;
  height: 25px;
  border: 1px solid rgb(255 255 255 / 55%);
  display: grid;
  place-items: center;
  font-size: 9px;
}

.lab-main {
  width: min(1800px, calc(100% - 64px));
  margin: 0 auto;
  padding: 48px 0 80px;
}

.lab-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
  align-items: end;
  gap: 48px;
  margin-bottom: 36px;
}

.lab-eyebrow {
  margin-bottom: 14px;
  color: #aeb6c1;
}

.lab-intro h1 {
  max-width: 900px;
  margin: 0;
  font-size: clamp(36px, 4vw, 68px);
  font-weight: 540;
  letter-spacing: -0.055em;
  line-height: 0.98;
}

.mobile-only {
  display: none;
}

.lab-intro__copy {
  max-width: 560px;
  margin: 0 0 4px;
  color: #aeb5bf;
  font-size: 14px;
  line-height: 1.75;
}

.lab-controls {
  min-height: 56px;
  margin-bottom: 14px;
  padding: 8px;
  border: 1px solid rgb(255 255 255 / 10%);
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgb(13 16 21 / 92%);
}

.segmented-control {
  display: flex;
  gap: 2px;
}

.segmented-control button,
.plain-control {
  min-height: 38px;
  padding: 0 16px;
  border: 0;
  background: transparent;
  color: #8f98a4;
  cursor: pointer;
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 0.06em;
}

.segmented-control button[aria-pressed="true"],
.plain-control[aria-pressed="true"] {
  background: #edf1f4;
  color: #080a0d;
}

.plain-control {
  border-left: 1px solid rgb(255 255 255 / 10%);
}

.range-control {
  min-width: 270px;
  margin-left: auto;
  padding: 0 12px;
  display: grid;
  grid-template-columns: auto minmax(100px, 1fr) 34px;
  align-items: center;
  gap: 12px;
  color: #aeb5bf;
  font-size: 11px;
}

.range-control input {
  accent-color: #f4f5f6;
}

.range-control output {
  color: #f4f5f6;
  font-variant-numeric: tabular-nums;
}

.comparison-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.viewer {
  min-width: 0;
  border: 1px solid rgb(255 255 255 / 11%);
  background: #0a0d11;
}

.viewer__heading {
  min-height: 58px;
  padding: 0 18px;
  border-bottom: 1px solid rgb(255 255 255 / 9%);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.viewer__heading > div {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.viewer__index {
  color: #78828f;
  font-size: 10px;
  font-variant-numeric: tabular-nums;
}

.viewer__heading h2 {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.1em;
}

.viewer--faired .viewer__heading {
  border-top: 1px solid rgb(213 232 243 / 45%);
}

.viewer__stage {
  position: relative;
  height: clamp(420px, 53vh, 690px);
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 42%, rgb(55 65 78 / 28%), transparent 43%),
    #07090c;
  cursor: grab;
  touch-action: none;
}

.viewer__stage:active {
  cursor: grabbing;
}

.viewer__stage canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.viewer__status {
  position: absolute;
  inset: auto 18px 16px;
  margin: 0;
  color: #7e8792;
  font-size: 10px;
  letter-spacing: 0.08em;
  pointer-events: none;
}

.viewer[data-ready="true"] .viewer__status {
  opacity: 0;
}

.lab-metrics {
  margin-top: 14px;
  border: 1px solid rgb(255 255 255 / 10%);
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  background: rgb(12 15 20 / 80%);
}

.lab-metrics p {
  min-height: 74px;
  margin: 0;
  padding: 16px 18px;
  border-right: 1px solid rgb(255 255 255 / 8%);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 8px;
}

.lab-metrics p:last-child {
  border-right: 0;
}

.lab-metrics strong {
  color: #7f8995;
  font-size: 10px;
  font-weight: 650;
}

.lab-metrics span {
  color: #f0f3f5;
  font-size: 15px;
  font-variant-numeric: tabular-nums;
}

.lab-hint {
  width: max-content;
  max-width: 100%;
  margin: 14px 0 0 auto;
  padding: 9px 12px;
  border: 1px solid rgb(255 255 255 / 9%);
  background: rgb(7 9 12 / 78%);
}

body[data-view="original"] .comparison-grid,
body[data-view="faired"] .comparison-grid {
  grid-template-columns: minmax(0, 1fr);
}

body[data-view="original"] [data-viewer="faired"],
body[data-view="faired"] [data-viewer="original"] {
  display: none;
}

body[data-view="original"] .viewer__stage,
body[data-view="faired"] .viewer__stage {
  height: clamp(520px, 65vh, 820px);
}

@media (max-width: 900px) {
  .lab-header {
    padding: 0 18px;
  }

  .lab-header > p {
    display: none;
  }

  .lab-main {
    width: min(100% - 24px, 720px);
    padding-top: 30px;
  }

  .lab-intro {
    grid-template-columns: 1fr;
    gap: 22px;
    margin-bottom: 28px;
  }

  .lab-intro h1 {
    font-size: clamp(34px, 10.5vw, 54px);
  }

  .desktop-gap {
    display: none;
  }

  .mobile-only {
    display: block;
  }

  .lab-controls {
    align-items: stretch;
    flex-wrap: wrap;
  }

  .segmented-control {
    width: 100%;
  }

  .segmented-control button {
    flex: 1;
  }

  .range-control {
    order: 2;
    width: 100%;
    min-width: 0;
    margin: 0;
    min-height: 40px;
  }

  .plain-control {
    flex: 1;
    border-left: 0;
    border-top: 1px solid rgb(255 255 255 / 10%);
  }

  .comparison-grid {
    grid-template-columns: 1fr;
  }

  .viewer__heading {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
  }

  .viewer__stage,
  body[data-view="original"] .viewer__stage,
  body[data-view="faired"] .viewer__stage {
    height: min(54vh, 440px);
  }

  .lab-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .lab-metrics p:nth-child(2) {
    border-right: 0;
  }

  .lab-metrics p:nth-child(-n + 2) {
    border-bottom: 1px solid rgb(255 255 255 / 8%);
  }

  .lab-metrics p:last-child span {
    font-size: 13px;
    letter-spacing: -0.02em;
    white-space: nowrap;
  }

  .lab-hint {
    width: 100%;
    margin-top: 14px;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
  }
}