@font-face {
  font-family: Michroma;
  src: url(fonts/michroma-latin.woff2) format("woff2");
  font-display: swap;
}

* { box-sizing: border-box; margin: 0; }

:root {
  --h: min(46vh, 62vw);
  --w: calc(var(--h) * .71);
  --t: calc(var(--h) * .055);
  --ink: #dcecff;
  --ink-dim: #9fb9dc;
  --line: rgb(170 210 255 / .38);
  --edge: clamp(20px, 5vw, 80px);
}

html, body { height: 100%; background: #02040c; color: var(--ink); overflow: hidden; }

body {
  font: 500 15px/1.35 system-ui, -apple-system, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
  user-select: none;
  -webkit-user-select: none;
  touch-action: pan-y;
}

/* Void */
.fog { position: fixed; inset: 0; width: 100%; height: 100%; transition: opacity 1400ms ease-out; }
.pool {
  position: fixed;
  left: 50%;
  top: calc(50% + var(--h) * .5 - 4vh);
  width: calc(var(--w) * 2.6);
  height: calc(var(--h) * .34);
  transform: translate(-50%, 0);
  background: radial-gradient(closest-side, rgb(120 180 255 / .30), rgb(60 110 220 / .10) 60%, transparent);
  pointer-events: none;
}

/* Carousel */
.stage {
  position: fixed;
  inset: 0;
  perspective: calc(var(--h) * 3.2);
  perspective-origin: 50% 42%;
}
.ring {
  position: absolute;
  left: 50%;
  top: calc(50% - 4vh);
  width: 0;
  height: 0;
  transform-style: preserve-3d;
}

.case {
  position: absolute;
  left: calc(var(--w) / -2);
  top: calc(var(--h) / -2);
  width: var(--w);
  height: var(--h);
  transform-style: preserve-3d;
  outline: none;
  will-change: transform, filter;
  -webkit-tap-highlight-color: transparent;
  cursor: pointer;
}
.face { position: absolute; backface-visibility: hidden; }

.front {
  inset: 0;
  transform: translateZ(calc(var(--t) / 2));
  border-radius: 3px 6px 6px 3px;
  overflow: hidden;
  background: #0a1430;
  box-shadow: inset 0 0 0 1px rgb(255 255 255 / .22);
}
.front img { width: 100%; height: 100%; object-fit: cover; display: block; }
.front::before { /* clear plastic sleeve */
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(115deg, rgb(255 255 255 / .26) 0%, rgb(255 255 255 / .06) 28%, transparent 42%),
    linear-gradient(90deg, rgb(0 0 0 / .45), transparent 9%);
  z-index: 1;
}
.cover-title {
  position: absolute;
  inset: 0 0 auto;
  padding: calc(var(--h) * .035) calc(var(--w) * .07) calc(var(--h) * .03);
  background: linear-gradient(rgb(4 10 28 / .92), rgb(4 10 28 / .78));
  border-bottom: 1px solid rgb(170 210 255 / .3);
  font: calc(var(--h) * .036)/1.15 Michroma, sans-serif;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: #fff;
  z-index: 2;
}

.back {
  inset: 0;
  transform: rotateY(180deg) translateZ(calc(var(--t) / 2));
  background: linear-gradient(160deg, #13244a, #060c1e);
  border-radius: 6px 3px 3px 6px;
}
.spine, .edge {
  top: 0;
  width: var(--t);
  height: var(--h);
}
.spine {
  left: calc(var(--t) / -2);
  transform: rotateY(-90deg);
  background: linear-gradient(90deg, #0c1838, #1c3266 50%, #0c1838);
  display: grid;
  place-items: center;
  overflow: hidden;
}
.spine span {
  writing-mode: vertical-rl;
  font: calc(var(--t) * .42) Michroma, sans-serif;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: #cfe0ff;
  white-space: nowrap;
}
.edge {
  left: calc(var(--w) - var(--t) / 2);
  transform: rotateY(90deg);
  background: repeating-linear-gradient(90deg, #c9d3e4 0 2px, #9aa8c0 2px 3px);
}
.top {
  left: 0;
  top: calc(var(--t) / -2);
  width: var(--w);
  height: var(--t);
  transform: rotateX(90deg);
  background: linear-gradient(#24386a, #0c1838);
}

/* Chrome */
.panel {
  position: fixed;
  left: var(--edge);
  bottom: clamp(64px, 9vh, 104px);
  max-width: min(560px, calc(100vw - 2 * var(--edge)));
  padding: 18px 26px 20px;
  border: 1px solid var(--line);
  border-radius: 22px 4px 22px 4px;
  background: linear-gradient(180deg, rgb(110 160 240 / .20), rgb(20 40 100 / .30) 55%, rgb(10 20 60 / .38));
  box-shadow:
    inset 0 1px 0 rgb(255 255 255 / .38),
    inset 0 -3px 10px rgb(0 0 0 / .35),
    0 10px 40px rgb(0 0 20 / .55);
  backdrop-filter: blur(8px) saturate(1.2);
  -webkit-backdrop-filter: blur(8px) saturate(1.2);
}
.title {
  font: 400 clamp(20px, 2.3vw, 34px)/1.15 Michroma, sans-serif;
  letter-spacing: .05em;
  text-transform: uppercase;
  text-shadow: 0 0 14px rgb(120 190 255 / .65);
}
.description { margin-top: 8px; color: var(--ink-dim); font-size: clamp(14px, 1.1vw, 16px); }
.panel.swap { animation: swap 260ms ease-out; }
@keyframes swap { from { opacity: 0; transform: translateX(-12px); } }

.clock {
  position: fixed;
  top: clamp(18px, 4vh, 40px);
  right: var(--edge);
  font: 400 clamp(14px, 1.2vw, 18px) Michroma, sans-serif;
  letter-spacing: .12em;
  color: var(--ink-dim);
  text-shadow: 0 0 10px rgb(120 190 255 / .5);
}

.prompts {
  position: fixed;
  right: var(--edge);
  bottom: clamp(24px, 4vh, 44px);
  display: flex;
  gap: 26px;
  font: 400 12px Michroma, sans-serif;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink);
}
.prompts span { display: flex; align-items: center; gap: 10px; }
.glyph {
  font-style: normal;
  min-width: 30px;
  height: 30px;
  padding: 0 9px;
  display: grid;
  place-items: center;
  border-radius: 15px;
  font: 600 12px/1 system-ui, sans-serif;
  letter-spacing: 0;
  color: #fff;
  background: radial-gradient(circle at 35% 30%, rgb(255 255 255 / .55), transparent 55%), #2b4c96;
  box-shadow: inset 0 -2px 3px rgb(0 0 0 / .4), 0 0 0 1px rgb(200 225 255 / .5), 0 0 12px rgb(100 170 255 / .45);
}
.glyph.a { background: radial-gradient(circle at 35% 30%, rgb(255 255 255 / .6), transparent 55%), #2f9a4a; padding: 0; }
.mouse .prompt-select { display: none; }
@media (hover: none) { .prompts { display: none; } }

/* Screen */
.crt {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    repeating-linear-gradient(rgb(0 0 0 / .16) 0 1px, transparent 1px 3px),
    radial-gradient(ellipse at center, transparent 55%, rgb(0 0 0 / .55));
}
.flash {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: #eaf3ff;
  opacity: 0;
}
.launching .flash { opacity: 1; transition: opacity 520ms cubic-bezier(.6, 0, .9, .4); }

/* Boot */
.booting .fog { opacity: 0; transition: none; }
.booting .panel, .booting .prompts, .booting .clock, .booting .pool { opacity: 0; }
.panel, .prompts, .clock, .pool { transition: opacity 700ms ease-out 500ms; }

@media (prefers-reduced-motion: reduce) {
  .panel.swap { animation: none; }
  .fog, .panel, .prompts, .clock, .pool { transition: none; }
}