:root {
  --bg: #f6f6f2;
  --fg: #080808;
  --muted: rgba(8, 8, 8, 0.48);
  --line: rgba(8, 8, 8, 0.08);
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  overflow: hidden;
  color: var(--fg);
  font-family: "Manrope", sans-serif;
  background:
    radial-gradient(circle at 18% 20%, rgba(255, 255, 255, 0.98), transparent 30%),
    radial-gradient(circle at 80% 24%, rgba(255, 255, 255, 0.9), transparent 26%),
    radial-gradient(circle at center, #ffffff 0%, #f5f5f0 72%, #ecece6 100%);
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.22), rgba(255, 255, 255, 0)),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140' viewBox='0 0 140 140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='.18'/%3E%3C/svg%3E");
  mix-blend-mode: multiply;
  opacity: 0.42;
}

.viewport {
  position: relative;
  width: 100vw;
  height: 100vh;
  isolation: isolate;
}

.hud {
  position: fixed;
  top: 18px;
  left: 22px;
  right: 22px;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hud__label,
.hud__hint {
  color: var(--muted);
}

.title-mask {
  position: absolute;
  top: -2.8vw;
  left: 0;
  right: 0;
  height: 13vw;
  overflow: hidden;
  pointer-events: none;
  z-index: 2;
}

.title {
  margin: 0;
  text-align: center;
  font-family: "Space Grotesk", sans-serif;
  font-size: 9.6vw;
  line-height: 0.78;
  letter-spacing: -0.08em;
  font-weight: 700;
  color: #040404;
}

.stage {
  position: relative;
  width: 100%;
  height: 100%;
  perspective: 1800px;
  perspective-origin: 50% 50%;
  overflow: hidden;
}

.stage__glow {
  position: absolute;
  border-radius: 999px;
  filter: blur(80px);
  opacity: 0.26;
  pointer-events: none;
}

.stage__glow--left {
  width: 28vw;
  height: 28vw;
  left: -6vw;
  bottom: 3vh;
  background: rgba(255, 255, 255, 0.88);
}

.stage__glow--right {
  width: 32vw;
  height: 32vw;
  right: -10vw;
  top: 8vh;
  background: rgba(225, 235, 255, 0.44);
}

.scene {
  position: absolute;
  inset: 0;
  transform-style: preserve-3d;
  will-change: transform;
}

.track {
  position: absolute;
  inset: 0;
  transform-style: preserve-3d;
}

.plane {
  position: absolute;
  top: 50%;
  left: 50%;
  width: var(--w);
  height: var(--h);
  margin-left: calc(var(--w) / -2);
  margin-top: calc(var(--h) / -2);
  transform-style: preserve-3d;
  border-radius: 1px;
  overflow: visible;
  backface-visibility: hidden;
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.16),
    0 26px 60px rgba(0, 0, 0, 0.07);
  will-change: transform, opacity, filter;
}

.plane::before {
  content: "";
  position: absolute;
  top: 0;
  right: -10px;
  width: 10px;
  height: 100%;
  transform-origin: left center;
  transform: rotateY(90deg);
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.16), rgba(255, 255, 255, 0.3) 55%, rgba(0, 0, 0, 0.1));
  opacity: 0.75;
}

.plane::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(0, 0, 0, 0.08));
  pointer-events: none;
}

.plane__media {
  width: 100%;
  height: 100%;
  overflow: hidden;
  transform: translateZ(0.1px);
  transform-origin: right bottom;
  transition: transform 680ms cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  z-index: 2;
}

.plane:hover,
.plane.is-hovered {
  box-shadow: none;
}

.plane img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  user-select: none;
  -webkit-user-drag: none;
}

.plane__vinyl {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 90%;
  height: 90%;
  border-radius: 999px;
  transform: translate3d(-50%, -50%, -1px);
  background:
    radial-gradient(circle at center, #161616 0 12%, #6c1a1a 12% 18%, #111 18% 22%, transparent 22%),
    repeating-radial-gradient(circle at center, #161616 0 2px, #0f0f0f 2px 4px, #171717 4px 6px);
  box-shadow:
    0 18px 38px rgba(0, 0, 0, 0.28),
    inset 0 0 0 1px rgba(255, 255, 255, 0.06);
  opacity: 0;
  transition:
    transform 900ms cubic-bezier(0.16, 1, 0.3, 1),
    opacity 500ms ease;
  pointer-events: none;
}

.plane__vinyl::after {
  content: "";
  position: absolute;
  inset: 8%;
  border-radius: inherit;
  background:
    radial-gradient(circle at 35% 30%, rgba(255, 255, 255, 0.18), transparent 0 32%),
    radial-gradient(circle at center, transparent 62%, rgba(255, 255, 255, 0.05) 68%, transparent 74%);
  mix-blend-mode: screen;
}

@media (hover: hover) and (pointer: fine) {
  .plane:hover .plane__media,
  .plane.is-hovered .plane__media {
    transform: translate3d(24%, -8%, 0.1px) rotate(20deg);
  }
}

.plane.is-focused .plane__media {
  transform: translate3d(0, 0, 0.1px) rotate(0deg);
}

.plane:hover::after,
.plane:hover::before,
.plane.is-hovered::after,
.plane.is-hovered::before {
  opacity: 0;
}

.plane.is-dimmed {
  filter: blur(2px) saturate(0.82) brightness(0.92);
}

.focus-backdrop {
  position: fixed;
  inset: 0;
  opacity: 0;
  pointer-events: none;
  z-index: 40;
  background: rgba(246, 246, 242, 0.08);
  backdrop-filter: blur(10px) saturate(0.82) brightness(0.92);
  -webkit-backdrop-filter: blur(10px) saturate(0.82) brightness(0.92);
  transition: opacity 320ms ease;
}

.focus-backdrop.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.focus-layer {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  pointer-events: none;
  opacity: 0;
  transition: opacity 300ms ease;
  z-index: 50;
}

.focus-layer.is-visible {
  opacity: 1;
}

.focus-card {
  position: relative;
  width: min(38vw, 440px);
  aspect-ratio: 1;
  transform: translateY(10px) scale(0.96);
  transition: transform 700ms cubic-bezier(0.16, 1, 0.3, 1);
}

.focus-layer.is-visible .focus-card {
  transform: translateY(0) scale(1);
}

.focus-card__cover,
.focus-card__vinyl {
  position: absolute;
  inset: 0;
}

.focus-card__cover {
  z-index: 2;
  overflow: hidden;
  box-shadow: 0 28px 60px rgba(0, 0, 0, 0.18);
}

.focus-card__cover img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.focus-card__vinyl {
  width: 90%;
  height: 90%;
  inset: 5%;
  border-radius: 999px;
  z-index: 1;
  background: url("./images/recoder.png") center / cover no-repeat;
  box-shadow:
    0 18px 38px rgba(0, 0, 0, 0.28),
    inset 0 0 0 1px rgba(255, 255, 255, 0.06);
  transform: translate3d(-10%, 0, 0) rotate(180deg);
  transform-origin: 50% 50%;
  opacity: 0;
  transition:
    transform 900ms cubic-bezier(0.16, 1, 0.3, 1),
    opacity 500ms ease;
  animation: focus-vinyl-spin 12s linear infinite;
  animation-play-state: paused;
}

.focus-layer.is-visible .focus-card__vinyl {
  opacity: 1;
  transform: translate3d(30%, 0, 0) rotate(220deg);
  animation-play-state: running;
}

@keyframes focus-vinyl-spin {
  from {
    transform: translate3d(30%, 0, 0) rotate(220deg);
  }

  to {
    transform: translate3d(30%, 0, 0) rotate(580deg);
  }
}

.plane.is-center {
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.28),
    0 36px 90px rgba(0, 0, 0, 0.12);
}

@media (max-width: 900px) {
  .title-mask {
    top: -1.2vw;
    height: 18vw;
  }

  .title {
    font-size: 12.5vw;
  }
}

@media (max-width: 640px) {
  .hud {
    top: 14px;
    left: 16px;
    right: 16px;
    font-size: 0.64rem;
  }

  .title-mask {
    top: 0;
    height: 15vw;
  }

  .title {
    font-size: 13.8vw;
  }
}