:root {
  --ink: #0b0e11;
  --panel: rgba(10, 14, 17, 0.7);
  --line: rgba(238, 242, 243, 0.14);
  --text: #eef2f3;
  --dim: #9eabb0;
  --sea: #35c9c2;
  --bronze: #c9a46a;
  --display: "Syncopate", "Arial Black", sans-serif;
  --ui: "IBM Plex Sans", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; overflow: hidden; background: var(--ink); color: var(--text); font: 14px/1.45 var(--ui); }
#scene { position: fixed; inset: 0; width: 100%; height: 100%; display: block; touch-action: none; }

.card {
  position: fixed; background: var(--panel); border: 1px solid var(--line); border-radius: 14px;
  backdrop-filter: blur(14px) saturate(1.2); -webkit-backdrop-filter: blur(14px) saturate(1.2);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.28);
}
body.hide-ui .card, body.hide-ui #views, body.hide-ui #hint, body.hide-ui #labels { display: none; }

#brand { top: 18px; left: 18px; width: min(340px, calc(100vw - 32px)); padding: 18px 20px 16px; }
#brand .eyebrow { margin: 0 0 6px; font: 500 11px/1 var(--ui); letter-spacing: 0.22em; text-transform: uppercase; color: var(--sea); }
#brand h1 { margin: 0; font: 700 34px/1 var(--display); letter-spacing: 0.08em; text-transform: uppercase; text-wrap: balance; }
#brand .tower { margin: 8px 0 14px; font: 500 15px/1.2 var(--ui); color: var(--bronze); letter-spacing: 0.04em; }
#brand .tower span { color: var(--dim); font-weight: 400; }
.stats { display: grid; grid-template-columns: repeat(4, auto); gap: 4px 16px; margin: 0 0 12px; padding: 12px 0 0; border-top: 1px solid var(--line); }
.stats dt { font: 500 10px/1.2 var(--ui); letter-spacing: 0.14em; text-transform: uppercase; color: var(--dim); }
.stats dd { margin: 3px 0 0; font: 500 17px/1.1 var(--mono); font-variant-numeric: tabular-nums; }
#brand .note { margin: 0; color: var(--dim); font-size: 12.5px; max-width: 36ch; }

#panel { top: 18px; right: 18px; width: 268px; padding: 6px 16px; max-height: calc(100vh - 120px); overflow: auto; }
#panel section { padding: 12px 0; display: grid; gap: 9px; }
#panel section + section { border-top: 1px solid var(--line); }
.row { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; }
.row.head span { font: 500 11px/1 var(--ui); letter-spacing: 0.16em; text-transform: uppercase; color: var(--dim); }
.row b { font: 500 15px/1 var(--mono); font-variant-numeric: tabular-nums; }
.facts .row span { color: var(--dim); font-size: 12.5px; }
.facts .row b { font-size: 13px; }
input[type="range"] { width: 100%; accent-color: var(--sea); }
.chips { display: grid; grid-template-columns: repeat(4, 1fr); gap: 5px; }
button {
  font: 500 12px/1 var(--ui); color: var(--text); background: rgba(255, 255, 255, 0.06); border: 1px solid var(--line);
  border-radius: 8px; padding: 8px 6px; cursor: pointer; transition: background 0.15s, border-color 0.15s;
}
button:hover { background: rgba(255, 255, 255, 0.12); }
button:focus-visible, input:focus-visible { outline: 2px solid var(--sea); outline-offset: 2px; }
button[aria-pressed="true"], button.on { border-color: rgba(53, 201, 194, 0.7); background: rgba(53, 201, 194, 0.18); }
button.wide { padding: 10px; }
.check { display: flex; align-items: center; gap: 9px; cursor: pointer; color: var(--text); }
.check input { accent-color: var(--sea); width: 15px; height: 15px; }

#views {
  position: fixed; left: 50%; bottom: 16px; transform: translateX(-50%); display: flex; gap: 4px; padding: 6px;
  background: var(--panel); border: 1px solid var(--line); border-radius: 13px; backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  max-width: calc(100vw - 24px); overflow-x: auto; scrollbar-width: none;
}
#views button { display: flex; align-items: center; gap: 7px; padding: 8px 11px; white-space: nowrap; border-color: transparent; background: transparent; font-size: 12.5px; }
#views button kbd { font: 500 10px/1 var(--mono); color: var(--dim); border: 1px solid var(--line); border-radius: 4px; padding: 3px 5px; }
#views button.on { background: var(--text); color: var(--ink); }
#views button.on kbd { color: var(--ink); border-color: rgba(11, 14, 17, 0.3); }

#hint { position: fixed; left: 18px; bottom: 74px; margin: 0; color: rgba(238, 242, 243, 0.62); font-size: 11.5px; text-shadow: 0 1px 3px rgba(0, 0, 0, 0.6); }

#labels { position: fixed; inset: 0; pointer-events: none; }
.label { position: absolute; transform: translate(14px, -50%); display: flex; align-items: center; gap: 8px; white-space: nowrap; }
.label::before { content: ""; position: absolute; left: -14px; top: 50%; width: 8px; height: 8px; margin-top: -4px; border-radius: 50%; background: var(--sea); box-shadow: 0 0 0 3px rgba(53, 201, 194, 0.25); }
.label div { padding: 6px 9px; background: rgba(10, 14, 17, 0.72); border: 1px solid var(--line); border-radius: 7px; }
.label b { display: block; font: 700 10.5px/1.2 var(--display); letter-spacing: 0.12em; text-transform: uppercase; }
.label span { display: block; font-size: 11px; color: var(--dim); margin-top: 2px; }

#loading { position: fixed; inset: 0; display: grid; place-items: center; background: var(--ink); transition: opacity 0.6s; z-index: 10; }
#loading span { font: 700 13px/1 var(--display); letter-spacing: 0.3em; text-transform: uppercase; color: var(--sea); }
#loading.done { opacity: 0; pointer-events: none; }

@media (max-width: 760px) {
  #brand { padding: 14px 16px; }
  #brand h1 { font-size: 26px; }
  #brand .note, #hint { display: none; }
  .stats { grid-template-columns: repeat(2, auto); }
  #panel { top: auto; bottom: 74px; right: 16px; left: 16px; width: auto; max-height: 38vh; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }