/* The rearing ribbon: a tall page with one screen that stays put. Scrolling down moves the ribbon sideways;
   the canvas draws the cards and the floor, the brand and the captions are ordinary HTML on top. */
:root {
  --page: #0b0b0c;
  --ink: #f4ead7;
  --soft: rgba(244, 234, 215, 0.58);
  --edge: clamp(20px, 5.4vw, 80px);   /* the margin of the brand and the captions */
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font-family: 'Mona Sans Variable', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.hall {
  position: relative;
  min-height: 100vh;
}

/* the screen that stays while the page goes by. It is as tall as the screen with the browser's bars away (lvh):
   on a phone the bars retract while you scroll, and a shorter stage would leave an empty band at the bottom */
.stage {
  --bars: 0px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: hidden;
}
@supports (height: 100lvh) {
  .stage {
    --bars: calc(100lvh - 100svh);
    height: 100lvh;
  }
}
.stage__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  -webkit-tap-highlight-color: transparent;
}
.is-over-card .stage__canvas {
  cursor: pointer;
}

/* ---------------------------------------------------------------- the frame: brand, link, captions */
.bar,
.foot {
  position: absolute;
  left: var(--edge);
  right: var(--edge);
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  pointer-events: none;
  opacity: 0;
}
.bar {
  top: clamp(18px, 4.4vh, 44px);
}
/* the captions stay above the browser's bottom bar when it is showing */
.foot {
  bottom: calc(clamp(18px, 4.4vh, 44px) + var(--bars));
}
.brand {
  margin: 0;
  font-family: 'Bricolage Grotesque Variable', 'Mona Sans Variable', sans-serif;
  font-size: clamp(15px, 1.35vw, 19px);
  font-weight: 700;
  font-stretch: 84%;
  letter-spacing: -0.02em;
}
.bar__link,
.foot p {
  margin: 0;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}
.bar__link {
  position: relative;
  color: inherit;
  text-decoration: none;
  pointer-events: auto;
  transition: opacity 0.3s ease-out;
  -webkit-tap-highlight-color: transparent;
}
.bar__link::before {
  content: '';
  position: absolute;
  inset: -16px;
}
.bar__link:focus-visible {
  outline: 1px solid var(--ink);
  outline-offset: 6px;
}
@media (hover: hover) {
  .bar__link:hover {
    opacity: 0.6;
  }
}
.foot p:first-child {
  color: var(--soft);
}

/* ---------------------------------------------------------------- the rooms, for readers only while the canvas draws them */
.rooms {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  list-style: none;
}

/* ---------------------------------------------------------------- without WebGL: a flat row that the scroll moves */
.is-flat .stage__canvas {
  display: none;
}
.is-flat .rooms {
  inset: 50% auto auto 0;
  display: flex;
  gap: 10px;
  width: max-content;
  height: 46vh;
  margin: -23vh 0 0;
  overflow: visible;
  clip-path: none;
  will-change: transform;
}
.is-flat .rooms li {
  position: relative;
  flex: none;
  height: 100%;
}
.is-flat .rooms canvas {
  display: block;
  height: 100%;
  border-radius: 20px;
}
.is-flat .rooms h2,
.is-flat .rooms p {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
}