:root {
      color-scheme: dark;
      --bg: #101114;
      --panel: #1a1d24;
      --line: #2b3040;
      --text: #f5f7fa;
      --muted: #a6adbb;
      --accent: #7dd3fc
    }

    * {
      box-sizing: border-box
    }

    html,
    body {
      margin: 0;
      height: 100%;
      overflow: hidden;
      overscroll-behavior: none;
      background: var(--bg);
      font: 14px/1.35 system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
      color: var(--text)
    }

    body,
    #app,
    main,
    canvas {
      user-select: none;
      -webkit-user-select: none;
      -webkit-touch-callout: none;
      -webkit-tap-highlight-color: transparent
    }

    #app {
      height: 100%;
      display: grid;
      grid-template-rows: auto 1fr
    }

    header {
      display: flex;
      gap: 6px;
      align-items: center;
      flex-wrap: wrap;
      padding: 8px 10px;
      background: rgba(18, 20, 25, .94);
      border-bottom: 1px solid var(--line);
      z-index: 2
    }

    button,
    .file,
    .seg label,
    .github-link {
      border: 1px solid var(--line);
      background: #20242d;
      color: var(--text);
      border-radius: 9px;
      padding: 7px 9px;
      cursor: pointer;
      min-width: 36px;
      text-align: center
    }

    button:hover,
    .file:hover,
    .seg label:hover,
    .github-link:hover {
      border-color: #4b5563
    }

    header .github-link {
      margin-inline-start: auto;
      flex: 0 0 auto;
      text-decoration: none;
      white-space: nowrap
    }

    button.active {
      border-color: var(--accent);
      box-shadow: 0 0 0 1px rgba(125, 211, 252, .25) inset;
      background: #1d2d35
    }

    input[type=file] {
      display: none
    }

    #textureButton {
      margin-right: 8px
    }

    .seg {
      display: flex;
      border: 1px solid var(--line);
      border-radius: 10px;
      overflow: hidden
    }

    .seg label {
      border: 0;
      border-radius: 0;
      padding: 0
    }

    .seg input {
      display: none
    }

    .seg span {
      display: block;
      padding: 7px 9px;
      min-width: 34px;
      text-align: center
    }

    .seg input:checked+span {
      background: var(--accent);
      color: #05131a
    }

    .range {
      display: flex;
      align-items: center;
      gap: 6px;
      color: var(--muted)
    }

    .range[hidden] {
      display: none
    }

    input[type=range] {
      width: 92px;
      height: 22px;
      margin: 0;
      appearance: none;
      -webkit-appearance: none;
      background: transparent;
      cursor: pointer
    }

    input[type=range]::-webkit-slider-runnable-track {
      height: 8px;
      border: 1px solid var(--line);
      border-radius: 9px;
      background: #20242d
    }

    input[type=range]::-webkit-slider-thumb {
      width: 18px;
      height: 18px;
      margin-top: -6px;
      appearance: none;
      -webkit-appearance: none;
      border: 2px solid var(--accent);
      border-radius: 50%;
      background: #20242d;
      box-shadow: 0 0 0 1px rgba(125, 211, 252, .18)
    }

    input[type=range]::-moz-range-track {
      height: 6px;
      border: 1px solid var(--line);
      border-radius: 9px;
      background: #20242d
    }

    input[type=range]::-moz-range-thumb {
      width: 14px;
      height: 14px;
      border: 2px solid var(--accent);
      border-radius: 50%;
      background: #20242d;
      box-shadow: 0 0 0 1px rgba(125, 211, 252, .18)
    }

    input[type=range]:hover::-webkit-slider-thumb,
    input[type=range]:focus-visible::-webkit-slider-thumb {
      background: #1d2d35;
      box-shadow: 0 0 0 3px rgba(125, 211, 252, .16)
    }

    input[type=range]:hover::-moz-range-thumb,
    input[type=range]:focus-visible::-moz-range-thumb {
      background: #1d2d35;
      box-shadow: 0 0 0 3px rgba(125, 211, 252, .16)
    }

    input[type=range]:focus-visible {
      outline: none
    }

    .num {
      width: 56px;
      padding: 4px 6px;
      border: 1px solid var(--line);
      background: #20242d;
      color: var(--text);
      border-radius: 8px
    }

    .settings {
      position: relative;
      border-bottom: 1px solid var(--line)
    }

    .settings[hidden] {
      display: none
    }

    .settings summary {
      list-style: none;
      padding: 11px 12px;
      background: #20242d;
      font-weight: 600;
      cursor: pointer
    }

    .settings summary::-webkit-details-marker {
      display: none
    }

    .settings[open] summary {
      color: var(--accent)
    }

    .settings-panel {
      display: grid;
      gap: 9px;
      padding: 12px;
      background: var(--panel)
    }

    .settings-panel .range {
      display: grid;
      grid-template-columns: 72px minmax(70px, 1fr) 58px
    }

    .settings-panel input[type=range] {
      width: 100%
    }

    .settings-panel .check {
      display: flex;
      align-items: center;
      gap: 8px;
      color: var(--text)
    }

    #progressOverlay {
      position: absolute;
      left: 50%;
      top: 22px;
      transform: translateX(-50%);
      z-index: 10;
      width: min(520px, calc(100% - 36px));
      padding: 12px 14px;
      border: 1px solid var(--line);
      border-radius: 12px;
      background: rgba(26, 29, 36, .94);
      box-shadow: 0 10px 32px rgba(0, 0, 0, .35);
      backdrop-filter: blur(10px);
      pointer-events: none
    }

    #progressOverlay[hidden] {
      display: none !important
    }

    #progressText {
      margin-bottom: 7px;
      color: var(--text);
      font-size: 13px
    }

    .progressTrack {
      height: 8px;
      overflow: hidden;
      border-radius: 999px;
      background: #303644
    }

    .progressFill {
      height: 100%;
      width: 0;
      background: var(--accent);
      border-radius: inherit;
      transition: width .12s linear
    }

    main {
      display: grid;
      grid-template-columns: minmax(0, 1fr);
      min-height: 0;
      overflow: hidden
    }

    #stage {
      position: relative;
      min-width: 0;
      min-height: 0;
      background: #000
    }

    #stage:fullscreen,
    #stage:-webkit-full-screen,
    body.layer-fullscreen #stage {
      width: 100vw;
      height: 100dvh;
      background: #000
    }

    body.layer-fullscreen #stage {
      position: fixed;
      inset: 0;
      z-index: 100
    }

    body.layer-fullscreen,
    body.stereogram-fullscreen {
      position: fixed;
      inset: 0;
      width: 100%;
      height: 100dvh;
      overflow: hidden
    }

    #stage:fullscreen #thumb,
    #stage:-webkit-full-screen #thumb,
    body.layer-fullscreen #thumb {
      display: none
    }

    #stage:fullscreen #layerDownloads,
    #stage:-webkit-full-screen #layerDownloads,
    body.layer-fullscreen #layerDownloads {
      top: max(12px, env(safe-area-inset-top));
      right: max(12px, env(safe-area-inset-right))
    }

    #settingsSidebar {
      min-width: 0;
      overflow: auto;
      border-left: 1px solid var(--line);
      background: var(--panel)
    }

    #settingsSidebar[hidden] {
      display: none
    }

    .summary-check {
      float: right
    }

    .floating-settings {
      position: absolute;
      right: 16px;
      top: 16px;
      z-index: 5;
      width: min(390px, calc(100% - 32px));
      border: 1px solid var(--line);
      border-radius: 12px;
      overflow: hidden;
      background: color-mix(in srgb, var(--panel) 90%, transparent);
      backdrop-filter: blur(10px)
    }

    .floating-settings[hidden] { display: none }
    .floating-settings summary { padding: 10px 12px; cursor: pointer }
    .floating-settings-panel { display: grid; gap: 8px; padding: 4px 12px 12px }
    .floating-settings-panel .range {
      display: grid;
      grid-template-columns: 112px minmax(80px, 1fr) 62px;
      align-items: center;
      gap: 8px
    }
    .floating-settings-panel .num { width: 62px }

    canvas {
      display: block;
      width: 100%;
      height: 100%;
      touch-action: none
    }

    @media (max-width: 720px) {
      main {
        grid-template-columns: minmax(0, 1fr)
      }

      #settingsSidebar {
        position: absolute;
        z-index: 8;
        top: 0;
        right: 0;
        bottom: 0;
        width: min(320px, 88vw);
        box-shadow: -12px 0 32px rgba(0, 0, 0, .35)
      }

      .settings-panel {
        padding: 8px
      }

      .settings-panel .range {
        grid-template-columns: 62px minmax(54px, 1fr) 52px;
        gap: 4px;
        font-size: 12px
      }

      .settings-panel .num {
        width: 52px
      }
    }

    #depthView {
      position: absolute;
      inset: 0;
      display: none;
      background: #090b0f;
      image-rendering: auto
    }

    #transitionView {
      position: absolute;
      inset: 0;
      z-index: 4;
      display: none;
      pointer-events: none;
      opacity: 1;
      transform: scale(1);
      transform-origin: center;
      will-change: opacity, transform
    }

    #transitionView.preparing {
      animation: scene-preparing 500ms cubic-bezier(.2,.7,.2,1) forwards
    }

    @keyframes scene-preparing {
      from { transform: scale(1); opacity: 1 }
      to { transform: scale(.985); opacity: .1 }
    }

    #downloadDepth {
      position: absolute;
      top: 12px;
      right: 12px;
      z-index: 5;
      width: 42px;
      height: 42px;
      padding: 0;
      display: grid;
      place-items: center;
      font-size: 12px;
      font-weight: 700;
      line-height: 1;
      font-family: inherit
    }

    #downloadDepth[hidden] {
      display: none
    }

    #meshDownloads,
    #layerDownloads {
      position: absolute;
      top: 12px;
      right: 12px;
      z-index: 5;
      display: flex;
      gap: 6px
    }

    #meshDownloads[hidden],
    #layerDownloads[hidden] {
      display: none
    }

    #meshDownloads button,
    #layerDownloads button {
      height: 42px;
      min-width: 42px;
      padding: 0 9px;
      font-size: 12px;
      font-weight: 700
    }

    #meshDownloads[hidden] {
      display: none
    }

    #drop {
      position: absolute;
      inset: 22px;
      border: 2px dashed #3b4250;
      border-radius: 18px;
      display: grid;
      place-items: center;
      text-align: center;
      color: var(--muted);
      pointer-events: none
    }

    #drop[hidden] {
      display: none !important
    }

    #drop strong {
      display: block;
      color: var(--text);
      font-size: 22px;
      margin-bottom: 6px
    }

    #thumb {
      position: absolute;
      z-index: 6;
      right: 12px;
      bottom: 12px;
      width: min(10vw, 90px);
      max-height: 11vh;
      object-fit: contain;
      border: 1px solid var(--line);
      border-radius: 10px;
      background: #000;
      cursor: zoom-in;
      opacity: .6;
      transition: opacity .18s ease
    }

    #thumb:hover,
    #thumb:focus-visible {
      opacity: 1
    }

    .disabled {
      opacity: .45;
      pointer-events: none
    }

    @media(max-width:860px) {
      header {
        gap: 6px;
        padding: 8px
      }

      .range {
        font-size: 12px
      }

      input[type=range] {
        width: 78px
      }

      .num {
        width: 58px;
        padding: 4px 6px;
        font-size: 12px
      }

      #thumb {
        width: 88px;
        bottom: 58px
      }
    }

    #thumb.stereogram-view {
      position: fixed;
      z-index: 1000;
      inset: 0;
      width: 100vw;
      height: 100dvh;
      max-height: none;
      object-fit: contain;
      border: 0;
      border-radius: 0;
      background: #000;
      cursor: zoom-out;
      opacity: 1
    }

    #thumb:fullscreen,
    #thumb:-webkit-full-screen {
      width: 100vw;
      height: 100dvh;
      max-height: none;
      object-fit: contain;
      border: 0;
      border-radius: 0;
      background: #000
    }