:root {
  --maroon: #861f41;
  --orange: #e5751f;

  --bg: #f6f2ef;
  --bg-2: #ebe4df;
  --ink: #1e1719;
  --muted: #7d7074;
  --line: rgba(30, 23, 25, 0.14);
  --glow: rgba(134, 31, 65, 0.09);
  --panel: rgba(250, 246, 243, 0.9);
  --panel-solid: rgba(250, 246, 243, 0.97);
  --accent: var(--maroon);
  --accent-2: var(--orange);

  --font-display: "Space Grotesk", "Inter", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;
  --ease: cubic-bezier(0.22, 0.8, 0.3, 1);
  color-scheme: light;
}

:root[data-theme="dark"] {
  --bg: #181215;
  --bg-2: #241b1f;
  --ink: #f5eeea;
  --muted: #a99ca1;
  --line: rgba(245, 238, 234, 0.16);
  --glow: rgba(229, 117, 31, 0.1);
  --panel: rgba(30, 22, 26, 0.92);
  --panel-solid: rgba(24, 18, 21, 0.97);
  --accent: var(--orange);
  --accent-2: #c4476f;
  color-scheme: dark;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
html.no-scroll, html.no-scroll body { overflow: hidden; overscroll-behavior: none; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.55;
  transition: background 0.4s var(--ease), color 0.4s var(--ease);
}

button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
a { color: inherit; }
img { display: block; max-width: 100%; }
::selection { background: var(--accent); color: #fff; }
:focus-visible { outline: 2px solid var(--accent-2); outline-offset: 3px; border-radius: 3px; }

.vh { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; list-style: none; }
.skip { position: absolute; left: 12px; top: -48px; z-index: 200; background: var(--accent); color: #fff; padding: 8px 14px; border-radius: 6px; text-decoration: none; font-size: 13px; }
.skip:focus { top: 12px; }

/* Corner chrome */
.corner {
  position: fixed; inset: 0 0 auto 0; z-index: 40;
  display: flex; justify-content: space-between; align-items: center;
  padding: 18px clamp(18px, 3vw, 36px);
  pointer-events: none;
}
.corner > * { pointer-events: auto; }
.mark {
  font-family: var(--font-display); font-weight: 700; font-size: 15px; letter-spacing: 0.08em;
  text-decoration: none; color: var(--ink);
  display: inline-flex; align-items: center; gap: 8px;
}
.mark::after { content: ""; width: 7px; height: 7px; background: var(--accent-2); }

.icon-btn {
  width: 44px; height: 44px; border-radius: 50%;
  display: inline-grid; place-items: center;
  border: 1px solid var(--line); background: var(--panel); color: var(--ink);
  transition: border-color 0.2s, transform 0.2s var(--ease), color 0.2s;
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
}
.icon-btn:hover { border-color: var(--accent); color: var(--accent); transform: scale(1.06); }

/* Hero */
.hero {
  min-height: 100svh; position: relative;
  display: flex; flex-direction: column; justify-content: center;
  padding: 0 clamp(18px, 4vw, 56px);
}
.name {
  font-family: var(--font-display); font-weight: 700; text-transform: uppercase;
  font-size: clamp(4.2rem, 19vw, 17rem); line-height: 0.84; letter-spacing: -0.045em;
  display: flex; flex-direction: column;
}
.rule {
  margin-top: clamp(20px, 3vw, 36px); display: flex; width: clamp(90px, 14vw, 190px); height: 4px;
  background: linear-gradient(90deg, var(--maroon) 0 62%, var(--orange) 62% 100%);
}
.cue {
  position: absolute; left: clamp(18px, 4vw, 56px); bottom: 32px; width: 1px; height: 54px;
  background: var(--line); overflow: hidden;
}
.cue span { display: block; width: 100%; height: 40%; background: var(--accent); animation: cue 2.2s var(--ease) infinite; }
@keyframes cue { 0% { transform: translateY(-100%); } 70%, 100% { transform: translateY(260%); } }

/* Ring stage */
.ring-wrap { height: 310vh; position: relative; }
.stage {
  position: sticky; top: 0; height: 100vh; height: 100svh; overflow: hidden;
}
.stage::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(ellipse 65% 55% at 50% 48%, var(--glow), transparent 72%),
    linear-gradient(var(--bg), var(--bg-2) 140%);
  -webkit-mask-image: linear-gradient(to bottom, transparent, #000 180px);
  mask-image: linear-gradient(to bottom, transparent, #000 180px);
}
.stage.is-focused { position: fixed; inset: 0; z-index: 60; }
#gl { position: absolute; inset: 0; width: 100%; height: 100%; display: block; touch-action: pan-y; }
.stage.is-focused #gl { touch-action: none; }
.stage.can-click #gl { cursor: pointer; }

/* Project names, placed opposite each model */
.labels { position: absolute; inset: 0; z-index: 4; pointer-events: none; transition: opacity 0.5s var(--ease); }
.stage.is-focused .labels { opacity: 0; }
.label {
  position: absolute; left: 0; top: 0; pointer-events: auto; text-align: left;
  display: flex; flex-direction: column; gap: 6px; transform: translate(0, -50%);
  font-family: var(--font-display); color: var(--ink); will-change: transform, opacity;
}
.stage.is-focused .label { pointer-events: none; }
.label.right { text-align: right; align-items: flex-end; }
.label .n { font-family: var(--font-body); font-weight: 500; font-size: 12px; letter-spacing: 0.2em; color: var(--accent); }
.label .t {
  font-weight: 700; letter-spacing: -0.035em; line-height: 0.95; text-transform: uppercase;
  font-size: clamp(1.9rem, 5.2vw, 4.6rem); max-width: 9ch; transition: color 0.25s;
}
.label:hover .t { color: var(--accent); }
.label.below { text-align: center; align-items: center; }
.label.below .t { font-size: clamp(1.5rem, 8vw, 2.4rem); max-width: 14ch; }

.progress {
  position: absolute; left: 0; top: 0; height: 2px; width: 0; background: var(--accent-2);
  transition: width 0.3s var(--ease), opacity 0.4s; z-index: 5;
}

/* HUD */
.hud { position: absolute; inset: 0; pointer-events: none; z-index: 10; }
.hud[hidden] { display: none; }
.hud > * { pointer-events: auto; }
.hud .close { position: absolute; top: 18px; right: clamp(18px, 3vw, 36px); }
.hud-title {
  position: absolute; left: clamp(18px, 3vw, 36px); bottom: 26px;
  font-family: var(--font-display); font-weight: 600; font-size: clamp(1.1rem, 2.4vw, 1.6rem); letter-spacing: -0.01em;
}
.hud-title::before { content: ""; display: inline-block; width: 8px; height: 8px; background: var(--accent-2); margin-right: 10px; }
.explode {
  position: absolute; left: 50%; bottom: 26px; transform: translateX(-50%);
  display: flex; align-items: center; gap: 14px;
  padding: 10px 18px; border-radius: 99px; border: 1px solid var(--line); background: var(--panel);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted);
}
.explode[hidden] { display: none; }
.explode input { width: clamp(120px, 24vw, 280px); accent-color: var(--accent); }
.hud .pill { position: absolute; right: clamp(18px, 3vw, 36px); bottom: 20px; }
.hud .pill[hidden] { display: none; }

.pill {
  display: inline-flex; align-items: center; gap: 8px; cursor: pointer;
  font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase;
  padding: 10px 18px; border-radius: 99px; border: 1px solid var(--line); background: var(--panel); color: var(--ink);
  transition: border-color 0.2s, background 0.2s, color 0.2s;
}
.pill:hover { border-color: var(--accent); color: var(--accent); }
.pill.solid { background: var(--accent); border-color: var(--accent); color: #fff; }
.pill.solid:hover { background: var(--accent-2); border-color: var(--accent-2); color: #fff; }

/* Tooltip */
.tip {
  position: fixed; z-index: 120; pointer-events: none; transform: translate(14px, 14px);
  padding: 6px 11px; border-radius: 6px; background: var(--ink); color: var(--bg);
  font-size: 12px; letter-spacing: 0.02em; white-space: nowrap;
}
.tip small { display: block; opacity: 0.6; font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; }
.tip[hidden] { display: none; }

/* Footer */
.foot {
  display: flex; justify-content: space-between; align-items: center;
  padding: 22px clamp(18px, 4vw, 56px) 26px; border-top: 1px solid var(--line);
  font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted);
}
.foot a { text-decoration: none; margin-right: 22px; transition: color 0.2s; }
.foot a:hover { color: var(--accent); }
.lock { opacity: 0.35; padding: 6px; border-radius: 6px; transition: opacity 0.2s, color 0.2s; }
.lock:hover { opacity: 1; color: var(--accent); }

/* Drawer */
.drawer {
  position: fixed; top: 0; right: 0; bottom: 0; z-index: 90; width: min(460px, 100vw);
  background: var(--panel); border-left: 1px solid var(--line);
  -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
  padding: 22px clamp(18px, 3vw, 28px) 28px; overflow-y: auto;
  transform: translateX(105%); visibility: hidden;
  transition: transform 0.5s var(--ease), visibility 0s 0.5s;
}
.drawer.open { transform: none; visibility: visible; transition: transform 0.5s var(--ease); }
.drawer-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; margin-bottom: 18px; }
.drawer-title { font-family: var(--font-display); font-weight: 700; font-size: 1.6rem; letter-spacing: -0.02em; line-height: 1.1; }
.drawer-notes { color: var(--muted); max-width: 52ch; margin-bottom: 20px; white-space: pre-wrap; }
.drawer-notes:empty { display: none; }
.photos { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.photo { position: relative; aspect-ratio: 4 / 3; overflow: hidden; border-radius: 8px; background: var(--bg-2); cursor: zoom-in; }
.photo img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--ease); }
.photo:hover img { transform: scale(1.05); }
.photo .del {
  position: absolute; top: 6px; right: 6px; width: 26px; height: 26px; border-radius: 50%;
  background: rgba(0, 0, 0, 0.65); color: #fff; display: none; place-items: center; font-size: 15px; line-height: 1;
}
body.is-admin .photo .del { display: grid; }
.admin-tools { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 18px; }
.admin-tools[hidden] { display: none; }
.status { font-size: 12px; color: var(--muted); }

.field {
  width: 100%; padding: 10px 12px; border-radius: 8px; border: 1px solid var(--line);
  background: var(--bg); color: var(--ink); font: inherit; resize: vertical;
}
.field:focus { outline: none; border-color: var(--accent); }
.field[hidden] { display: none; }
#drawer-title-input { font-family: var(--font-display); font-weight: 700; font-size: 1.3rem; }
#drawer-notes-input { margin-bottom: 20px; }


/* Part page (click a part, scroll for details) */
.sheet { position: fixed; inset: 0; z-index: 70; pointer-events: none; visibility: hidden; transition: visibility 0s 0.7s; }
.sheet.open { visibility: visible; transition: none; }
.sheet-scroll { position: absolute; inset: 0; overflow-y: auto; overscroll-behavior: contain; -webkit-overflow-scrolling: touch; }
.sheet.open .sheet-scroll { pointer-events: auto; }
.sheet-window { height: 54vh; height: 54svh; display: flex; align-items: flex-end; justify-content: center; padding-bottom: 14px; }
.sheet-cue { font-size: 11px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--muted); display: flex; flex-direction: column; align-items: center; gap: 8px; }
.sheet-cue::after { content: ""; width: 1px; height: 26px; background: linear-gradient(var(--accent), transparent); animation: cue 2.2s var(--ease) infinite; }
.sheet-body {
  max-width: 960px; margin: 0 auto; min-height: 46vh; padding: clamp(24px, 4vw, 44px) clamp(18px, 4vw, 44px) 120px;
  background: var(--panel-solid); border: 1px solid var(--line); border-bottom: 0; border-radius: 24px 24px 0 0;
  -webkit-backdrop-filter: blur(16px); backdrop-filter: blur(16px);
  transform: translateY(70px); opacity: 0; transition: transform 0.8s var(--ease), opacity 0.5s;
}
.sheet.open .sheet-body { transform: none; opacity: 1; }
.sheet-back { position: fixed; top: 16px; left: clamp(16px, 3vw, 36px); z-index: 5; pointer-events: auto; }
.sheet-kicker { font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--accent); }
.sheet-head h2 { font-family: var(--font-display); font-weight: 700; font-size: clamp(2rem, 6vw, 3.8rem); letter-spacing: -0.035em; line-height: 0.98; margin: 10px 0 14px; text-transform: uppercase; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 8px; }
.chip { font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; padding: 6px 12px; border: 1px solid var(--line); border-radius: 99px; color: var(--muted); }

.cad { margin: 26px 0 8px; padding-top: 22px; border-top: 1px solid var(--line); }
.cad-title { font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; font-weight: 500; color: var(--muted); margin-bottom: 14px; }

.blk { margin: 30px 0; }
.blk-empty { color: var(--muted); font-style: italic; }
.blk-text { max-width: 66ch; }
.blk-text p { margin: 0 0 1em; font-size: 1.04rem; line-height: 1.7; color: var(--ink); opacity: 0.88; }
.blk-text h3 { font-family: var(--font-display); font-size: 1.5rem; letter-spacing: -0.02em; margin: 1.6em 0 0.5em; }
.blk-text ul { margin: 0 0 1em 1.2em; }
.blk-text li { line-height: 1.7; margin-bottom: 0.3em; opacity: 0.88; }
.blk-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.blk-stats > div { background: var(--panel-solid); padding: 16px 18px; }
.blk-stats dt { font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted); margin-bottom: 6px; }
.blk-stats dd { font-family: var(--font-display); font-weight: 600; font-size: 1.3rem; letter-spacing: -0.01em; }
.blk-image img, .blk-video video { width: 100%; border-radius: 12px; }
.blk-image figcaption, .cap { margin-top: 8px; font-size: 13px; color: var(--muted); }
.blk-embed iframe { width: 100%; border: 1px solid var(--line); border-radius: 12px; background: var(--bg-2); }
.chart { margin: 0; padding: 18px 16px 12px; border: 1px solid var(--line); border-radius: 14px; background: var(--panel-solid); }
.chart figcaption { font-family: var(--font-display); font-weight: 600; font-size: 1.1rem; margin: 0 4px 10px; }
.chart-empty { color: var(--muted); font-style: italic; padding: 24px 6px; }
.chart-svg { width: 100%; height: auto; display: block; }
.chart-svg .grid { stroke: var(--line); stroke-width: 1; }
.chart-svg .axis { stroke: var(--muted); stroke-width: 1; }
.chart-svg .tick { fill: var(--muted); font-size: 11px; font-family: var(--font-body); }
.chart-svg .axis-label { fill: var(--muted); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; font-family: var(--font-body); }
.chart-svg .pt:hover, .chart-svg .bar:hover { opacity: 0.75; }
.legend { display: flex; flex-wrap: wrap; gap: 14px; margin: 8px 4px 2px; font-size: 12px; color: var(--muted); }
.legend span { display: inline-flex; align-items: center; gap: 7px; }
.legend i { width: 10px; height: 10px; border-radius: 2px; display: inline-block; }

/* Editor */
.blk-edit { margin: 26px 0; padding: 16px; border: 1px dashed var(--line); border-radius: 14px; }
.ed-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.ed-type { font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--accent); }
.ed-tools { display: flex; gap: 6px; }
.ed-btn { width: 36px; height: 36px; border: 1px solid var(--line); border-radius: 8px; font-size: 16px; }
.ed-btn:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.ed-btn:disabled { opacity: 0.3; cursor: default; }
.ed-fields { display: grid; gap: 12px; }
.ed-field { display: grid; gap: 6px; font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }
.ed-field .field { text-transform: none; letter-spacing: 0; font-size: 14px; }
.ed-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.ed-preview { margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--line); }
.ed-preview .blk { margin: 0; }
select.field { appearance: auto; }
.sheet-tools { margin-top: 36px; padding-top: 22px; border-top: 1px solid var(--line); display: grid; gap: 16px; }
.sheet-tools[hidden] { display: none; }
.sheet-add { display: flex; flex-wrap: wrap; gap: 8px; }
.sheet-save { display: flex; align-items: center; gap: 14px; }

@media (max-width: 640px) {
  .sheet-window { height: 50vh; height: 50svh; }
  .sheet-body { border-radius: 20px 20px 0 0; }
  .ed-row { grid-template-columns: 1fr; }
}

/* Lightbox */
.lightbox { position: fixed; inset: 0; z-index: 150; background: rgba(15, 10, 12, 0.92); display: grid; place-items: center; padding: 3vw; cursor: zoom-out; }
.lightbox[hidden] { display: none; }
.lightbox img { max-height: 92vh; max-width: 94vw; object-fit: contain; border-radius: 6px; }

/* Admin */
.adminbar {
  position: fixed; left: 16px; bottom: 16px; z-index: 110; display: flex; align-items: center; gap: 12px;
  padding: 8px 14px; border-radius: 99px; background: var(--ink); color: var(--bg);
  font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
}
.adminbar[hidden] { display: none; }
.adminbar button { text-decoration: underline; letter-spacing: inherit; text-transform: inherit; font-size: inherit; }

.login { margin: auto; border: 1px solid var(--line); border-radius: 14px; padding: 26px; width: min(360px, 92vw); background: var(--panel); color: var(--ink); }
.login::backdrop { background: rgba(15, 10, 12, 0.55); }
.login form { display: grid; gap: 14px; }
.login label { display: grid; gap: 6px; font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); }
.login-title { font-family: var(--font-display); font-weight: 700; font-size: 1.4rem; }
.login-note { font-size: 13px; color: var(--muted); }
.login-err { min-height: 1.2em; font-size: 13px; color: #c0392b; }
.login-row { display: flex; justify-content: flex-end; gap: 10px; }

@media (max-width: 700px) {
  .hero { min-height: 0; justify-content: flex-start; padding-top: 13svh; padding-bottom: 0; }
  .cue { display: none; }
}

@media (max-width: 640px) {
  .explode { bottom: 74px; }
  .hud-title { bottom: 28px; }
  .hud .pill { bottom: 20px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

/* Mobile hardening */
html { -webkit-tap-highlight-color: transparent; }
button, a, label, select, input[type="range"] { touch-action: manipulation; }
#gl, .label, .hud, .hero { -webkit-user-select: none; user-select: none; -webkit-touch-callout: none; }
.field { font-size: 16px; }
.name { font-size: min(clamp(4.2rem, 19vw, 17rem), 36svh); }
.nogl { display: none; margin-top: 28px; color: var(--muted); max-width: 32ch; }
.no-webgl .nogl { display: block; }
.no-webgl .ring-wrap { display: none; }

@media (pointer: coarse) {
  .lock { width: 44px; height: 44px; display: inline-grid; place-items: center; padding: 0; }
  .pill { min-height: 44px; }
  .ed-btn { width: 44px; height: 44px; }
  .explode input { height: 32px; }
}

@media (max-height: 520px) and (orientation: landscape) {
  .sheet-window { height: 38vh; height: 38svh; }
  .explode { bottom: 12px; }
  .hud-title { bottom: 14px; }
  .hud .pill { bottom: 10px; }
  .hero { padding-top: 64px; }
  .cue { display: none; }
}

/* Theme button: moon in light mode (click for dark), sun in dark mode (click for light) */
#theme .moon { display: none; }
html[data-theme="light"] #theme .sun { display: none; }
html[data-theme="light"] #theme .moon { display: block; }