:root {
  --bg: #07080b;
  --fg: #f2f3f5;
  --fg-2: rgba(242, 243, 245, 0.62);
  --fg-3: rgba(242, 243, 245, 0.38);
  --line: rgba(242, 243, 245, 0.14);
  --font-display: "Unbounded", "Helvetica Neue", Arial, sans-serif;
  --font-ui: "Geologica", "Helvetica Neue", Arial, sans-serif;
  --pad: clamp(18px, 3vw, 40px);
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--fg); overflow: hidden; }
body { font-family: var(--font-ui); font-weight: 300; -webkit-font-smoothing: antialiased; }
#gl { position: fixed; inset: 0; width: 100vw; height: 100vh; height: 100dvh; display: block; touch-action: none; }
.vignette { position: fixed; inset: 0; pointer-events: none; background: radial-gradient(ellipse at center, rgba(0,0,0,0) 55%, rgba(0,0,0,0.42) 100%); }

/* Верхняя полоса */
.top {
  position: fixed; top: 0; left: 0; right: 0; z-index: 5;
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: start; gap: 16px;
  padding: var(--pad); pointer-events: none;
}
.brand { display: flex; flex-direction: column; gap: 6px; max-width: 360px; }
.brand__name { font-family: var(--font-display); font-weight: 600; font-size: 15px; letter-spacing: 0.02em; }
.brand__sub { font-size: 12.5px; line-height: 1.45; color: var(--fg-2); }

.tabs { display: flex; gap: 4px; pointer-events: auto; justify-self: center; }
.tab {
  appearance: none; border: 1px solid transparent; background: transparent; color: var(--fg-2);
  font: 500 13px/1 var(--font-ui); letter-spacing: 0.01em; padding: 10px 14px; border-radius: 999px;
  cursor: pointer; transition: color .25s, border-color .25s, background .25s; white-space: nowrap;
}
.tab b { font-weight: 400; color: var(--fg-3); margin-right: 8px; font-variant-numeric: tabular-nums; }
.tab .t-short { display: none; }
.tab:hover { color: var(--fg); }
.tab[aria-current="true"] { color: var(--fg); border-color: var(--line); background: rgba(255,255,255,0.05); backdrop-filter: blur(10px); }
.tab[aria-current="true"] b { color: var(--fg-2); }

.meter { justify-self: end; text-align: right; font-variant-numeric: tabular-nums; color: var(--fg-2); font-size: 12.5px; line-height: 1.5; }
.meter__fps { font-family: var(--font-display); font-weight: 600; font-size: 15px; color: var(--fg); }
.meter__unit { margin-left: 4px; }
.meter__stat { display: block; color: var(--fg-3); }

/* Подпись сцены */
.caption {
  position: fixed; left: var(--pad); bottom: var(--pad); z-index: 5; max-width: min(560px, 60vw);
  pointer-events: none;
}
.caption__num { font-family: var(--font-display); font-size: 12px; color: var(--fg-3); letter-spacing: 0.12em; margin-bottom: 10px; }
.caption__title { font-family: var(--font-display); font-weight: 700; font-size: clamp(34px, 5.2vw, 72px); line-height: 1; margin: 0 0 14px; letter-spacing: -0.01em; }
.caption__lead { margin: 0 0 16px; font-size: clamp(14px, 1.15vw, 16.5px); line-height: 1.5; color: var(--fg-2); max-width: 52ch; }
.caption__chips { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.caption__chips li { font-size: 11.5px; letter-spacing: 0.03em; color: var(--fg-2); border: 1px solid var(--line); border-radius: 999px; padding: 5px 10px; }

.caption > * { transition: opacity .5s ease, transform .5s ease; }
.caption.is-out > * { opacity: 0; transform: translateY(8px); transition-duration: .18s; }

.hint { position: fixed; right: var(--pad); bottom: var(--pad); z-index: 5; max-width: 260px; text-align: right; font-size: 12.5px; line-height: 1.5; color: var(--fg-3); pointer-events: none; }
.hint kbd { font: inherit; color: var(--fg-2); }

.loader {
  position: fixed; left: 50%; top: 50%; transform: translate(-50%, -50%); z-index: 6;
  display: flex; align-items: center; gap: 10px; padding: 12px 18px; border-radius: 999px;
  background: rgba(10, 11, 15, 0.7); border: 1px solid var(--line); backdrop-filter: blur(12px);
  font-size: 13px; color: var(--fg-2); pointer-events: none;
}
.loader__dot { width: 8px; height: 8px; border-radius: 50%; background: var(--fg); animation: pulse 1s ease-in-out infinite; }
@keyframes pulse { 0%, 100% { opacity: .25; transform: scale(.7); } 50% { opacity: 1; transform: scale(1); } }

.nogl { position: fixed; inset: 0; z-index: 10; display: grid; place-items: center; padding: 40px; background: var(--bg); text-align: center; font-size: 16px; line-height: 1.5; color: var(--fg-2); }
.nogl p { max-width: 42ch; }

@media (max-width: 900px) {
  body::after { content: ""; position: fixed; left: 0; right: 0; bottom: 0; height: 58vh; pointer-events: none; z-index: 4; background: linear-gradient(to top, rgba(7,8,11,0.9) 0%, rgba(7,8,11,0.55) 45%, rgba(7,8,11,0) 100%); }
  .top { grid-template-columns: 1fr auto; grid-template-areas: "brand meter" "tabs tabs"; }
  .brand { grid-area: brand; max-width: none; }
  .brand__sub { display: none; }
  .meter { grid-area: meter; }
  .tabs { grid-area: tabs; justify-self: stretch; flex-wrap: wrap; row-gap: 6px; }
  .tab { padding: 9px 11px; font-size: 12.5px; }
  .tab b { display: none; }
  .tab .t-full { display: none; }
  .tab .t-short { display: inline; }
  .caption { max-width: calc(100vw - 2 * var(--pad)); }
  .caption__title { font-size: 34px; }
  .caption__lead { font-size: 14px; }
  .hint { display: none; }
}
@media (hover: none) { .hint { display: none; } }