:root {
  color-scheme: dark;
  font-family: "IBM Plex Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top, #1a2638, #080b12);
  color: #e5f1ff;
  display: flex;
  justify-content: center;
}

.app {
  width: min(1200px, 100%);
  padding: 2rem clamp(1rem, 3vw, 2.5rem) 3rem;
  display: grid;
  gap: 2.5rem;
}

.app__header {
  display: grid;
  gap: 0.5rem;
}

.app__header h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 2.75rem);
  text-transform: uppercase;
  letter-spacing: 0.2rem;
}

.app__header p {
  margin: 0;
  max-width: 60ch;
  color: rgba(229, 241, 255, 0.75);
}

.generator {
  display: grid;
  gap: 2.5rem;
}

.model-stage {
  display: grid;
  gap: 1.5rem;
  background: rgba(18, 28, 46, 0.85);
  border: 1px solid rgba(102, 154, 255, 0.35);
  border-radius: 1.25rem;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  box-shadow: 0 1.5rem 3rem rgba(0, 0, 0, 0.45);
}

.model-stage__header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.5rem;
}

.model-stage__title {
  margin: 0;
  font-size: clamp(1.5rem, 3vw, 2rem);
}

.model-stage__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-left: auto;
}

.button {
  appearance: none;
  border: 1px solid rgba(102, 154, 255, 0.6);
  background: linear-gradient(120deg, rgba(57, 94, 173, 0.9), rgba(25, 47, 101, 0.9));
  color: inherit;
  padding: 0.6rem 1.2rem;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.button:hover,
.button:focus-visible {
  border-color: rgba(150, 201, 255, 0.9);
  transform: translateY(-1px);
  box-shadow: 0 0.75rem 1.5rem rgba(100, 150, 255, 0.2);
}

.button:active {
  transform: translateY(0);
}

.stage-view {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 1rem;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: radial-gradient(circle at 20% -10%, rgba(99, 160, 255, 0.45), transparent 45%),
    radial-gradient(circle at 80% 110%, rgba(255, 99, 177, 0.45), transparent 50%),
    rgba(5, 8, 17, 0.85);
}

.stage-view canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.stage-view__notice {
  max-width: 32ch;
  display: grid;
  gap: 0.35rem;
  font-size: 0.95rem;
  color: rgba(229, 241, 255, 0.85);
}

.stage-view__notice p {
  margin: 0;
}

.model-description {
  display: grid;
  gap: 0.5rem;
  font-size: 0.95rem;
  color: rgba(229, 241, 255, 0.8);
}

.variant-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.variant-card {
  display: grid;
  gap: 0.75rem;
  padding: 1.1rem;
  background: rgba(13, 20, 35, 0.9);
  border: 1px solid rgba(80, 120, 185, 0.4);
  border-radius: 1rem;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  cursor: pointer;
}

.variant-card:hover,
.variant-card:focus-visible {
  transform: translateY(-4px);
  border-color: rgba(150, 201, 255, 0.8);
  box-shadow: 0 1rem 1.8rem rgba(0, 0, 0, 0.35);
}

.variant-card__title {
  margin: 0;
  font-size: 1.1rem;
}

.variant-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(229, 241, 255, 0.6);
}

.variant-card__view {
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: 0.75rem;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: radial-gradient(circle at 20% 20%, rgba(114, 168, 255, 0.5), transparent 55%),
    radial-gradient(circle at 80% 80%, rgba(255, 140, 200, 0.45), transparent 50%),
    rgba(4, 7, 15, 0.95);
}

.variant-card canvas {
  width: 100%;
  height: 100%;
  display: block;
}

@media (max-width: 720px) {
  .model-stage {
    padding: 1.2rem;
  }

  .model-stage__header {
    flex-direction: column;
    align-items: flex-start;
  }

  .model-stage__actions {
    margin-left: 0;
  }
}