:root {
  color-scheme: dark;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  --bg: #05070d;
  --panel: rgba(11, 20, 34, 0.82);
  --panel-strong: rgba(16, 31, 51, 0.94);
  --text: #f3f8ff;
  --muted: #aebcd0;
  --accent: #75f4ff;
  --gold: #ffd78a;
  --line: rgba(255, 255, 255, 0.14);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at 15% 8%, rgba(117, 244, 255, 0.22), transparent 25%),
    radial-gradient(circle at 84% 12%, rgba(255, 215, 138, 0.15), transparent 24%),
    linear-gradient(135deg, #05070d, #0a1726 58%, #060910);
}

main {
  width: min(1280px, calc(100vw - 28px));
  margin: 0 auto;
  padding: 28px 0 48px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 16px;
  margin-bottom: 16px;
}

.hero > div,
.stats,
.asset-viewer,
.filters,
.asset-card {
  border: 1px solid var(--line);
  border-radius: 26px;
  background: linear-gradient(145deg, var(--panel), rgba(5, 9, 16, 0.72));
  box-shadow: 0 24px 90px rgba(0, 0, 0, 0.34);
  backdrop-filter: blur(14px);
}

.hero > div {
  padding: clamp(28px, 5vw, 48px);
}

.hero p,
#viewer-status {
  margin: 0 0 12px;
  color: var(--gold);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  max-width: 820px;
  font-size: clamp(46px, 8vw, 96px);
  line-height: 0.9;
  letter-spacing: -0.05em;
}

.hero span {
  display: block;
  max-width: 780px;
  margin-top: 18px;
  color: var(--muted);
  font-size: 20px;
  line-height: 1.55;
}

.stats {
  display: grid;
  place-items: center;
  padding: 24px;
  text-align: center;
}

.stats strong {
  font-family: Georgia, serif;
  font-size: 80px;
  color: var(--gold);
}

.stats span {
  color: var(--muted);
}

.stage {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 210px;
  gap: 16px;
  align-items: stretch;
}

.asset-viewer {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  gap: 16px;
  min-height: 620px;
  padding: 14px;
  overflow: hidden;
}

canvas {
  width: 100%;
  height: 590px;
  min-height: 420px;
  border-radius: 20px;
  background:
    radial-gradient(circle at 48% 46%, rgba(255, 215, 138, 0.16), transparent 12%),
    radial-gradient(circle at 50% 55%, rgba(117, 244, 255, 0.16), transparent 34%),
    linear-gradient(rgba(117, 244, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(117, 244, 255, 0.08) 1px, transparent 1px),
    linear-gradient(180deg, #07111e, #06101a);
  background-size: auto, auto, 34px 34px, 34px 34px, auto;
}

canvas.is-unavailable {
  display: grid;
  background:
    linear-gradient(135deg, rgba(255, 215, 138, 0.12), rgba(117, 244, 255, 0.12)),
    repeating-linear-gradient(135deg, rgba(255, 255, 255, 0.08) 0 1px, transparent 1px 18px),
    linear-gradient(180deg, #07111e, #06101a);
}

.viewer-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 20px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  background: rgba(7, 15, 26, 0.72);
}

.viewer-copy h2 {
  margin: 0;
  font-family: Georgia, serif;
  font-size: 38px;
  line-height: 1;
}

.viewer-copy span,
.viewer-copy p,
.asset-card p {
  color: var(--muted);
  line-height: 1.55;
}

.download-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: fit-content;
  min-height: 42px;
  margin-top: auto;
  border: 1px solid rgba(117, 244, 255, 0.44);
  border-radius: 999px;
  padding: 0 18px;
  color: #07101a;
  background: linear-gradient(135deg, var(--accent), var(--gold));
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}

.filters {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 14px;
}

button {
  min-height: 46px;
  border: 1px solid rgba(117, 244, 255, 0.34);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.07);
  color: var(--text);
  padding: 0 14px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
}

button.is-active,
button:hover,
button:focus-visible {
  background: linear-gradient(135deg, var(--accent), var(--gold));
  color: #07101a;
}

.catalog {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 16px;
}

.asset-card {
  display: flex;
  min-height: 410px;
  flex-direction: column;
  gap: 12px;
  padding: 16px;
  transition: border-color 180ms ease, transform 180ms ease, background 180ms ease;
}

.asset-card.is-active {
  border-color: rgba(255, 215, 138, 0.72);
  background:
    linear-gradient(145deg, rgba(20, 42, 63, 0.98), rgba(10, 19, 31, 0.86)),
    radial-gradient(circle at 15% 0%, rgba(255, 215, 138, 0.2), transparent 32%);
  transform: translateY(-3px);
}

.asset-preview {
  width: 100%;
  min-height: 96px;
  border-radius: 18px;
  text-align: left;
  background:
    radial-gradient(circle at 12% 20%, rgba(255, 215, 138, 0.28), transparent 24%),
    radial-gradient(circle at 84% 70%, rgba(117, 244, 255, 0.18), transparent 26%),
    rgba(255, 255, 255, 0.06);
}

.asset-preview span,
.asset-preview small,
.asset-preview strong {
  display: block;
}

.asset-preview span {
  color: var(--gold);
}

.asset-preview strong {
  margin: 6px 0;
  font-size: 18px;
}

.asset-preview small {
  color: var(--muted);
}

.asset-card-preview {
  position: relative;
  overflow: hidden;
  aspect-ratio: 1.45;
  min-height: 178px;
  border: 1px solid rgba(117, 244, 255, 0.18);
  border-radius: 18px;
  background:
    radial-gradient(circle at 50% 58%, rgba(255, 215, 138, 0.16), transparent 20%),
    radial-gradient(circle at 46% 36%, rgba(117, 244, 255, 0.16), transparent 36%),
    linear-gradient(rgba(117, 244, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(117, 244, 255, 0.08) 1px, transparent 1px),
    linear-gradient(180deg, #07111e, #06101a);
  background-size: auto, auto, 28px 28px, 28px 28px, auto;
}

.asset-card-preview::after {
  content: "Loading GLB";
  position: absolute;
  inset: auto 12px 12px;
  color: rgba(243, 248, 255, 0.56);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  pointer-events: none;
}

.asset-card.has-card-render .asset-card-preview::after {
  content: "";
}

.asset-card-canvas {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 178px;
  border-radius: 18px;
  background: transparent;
}

.asset-card-canvas.is-unavailable {
  background:
    linear-gradient(135deg, rgba(255, 215, 138, 0.12), rgba(117, 244, 255, 0.12)),
    repeating-linear-gradient(135deg, rgba(255, 255, 255, 0.08) 0 1px, transparent 1px 18px),
    linear-gradient(180deg, #07111e, #06101a);
}

.asset-card .download-link {
  margin-top: auto;
}

@media (max-width: 1000px) {
  .hero,
  .stage,
  .asset-viewer {
    grid-template-columns: 1fr;
  }

  .filters {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .catalog {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .asset-card-preview,
  .asset-card-canvas {
    min-height: 220px;
  }

  canvas {
    height: 520px;
  }
}

@media (max-width: 640px) {
  main {
    width: min(100% - 18px, 1280px);
    padding-top: 12px;
  }

  .filters,
  .catalog {
    grid-template-columns: 1fr;
  }

  .hero > div,
  .asset-viewer,
  .asset-card {
    border-radius: 18px;
  }

  canvas {
    height: 430px;
  }
}