.theme-light {
  color-scheme: light;
}

.theme-dark {
  color-scheme: dark;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--quack-space-4);
  position: sticky;
  top: 0;
  z-index: 1;
  padding: var(--quack-space-3) var(--quack-space-6);
  background: hsl(from var(--quack-background) h s l / 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--quack-border-200);

  .brand {
    display: flex;
    align-items: center;
    gap: var(--quack-space-3);
    font-weight: 700;
    font-size: var(--quack-text-lg);

    .logo {
      width: 48px;
    }

    .title {
      display: flex;
      flex-direction: column;

      .accent {
        color: var(--quack-text-accent);
      }

      small {
        font-weight: 500;
        font-size: var(--quack-text-xs);
        color: var(--quack-text-muted);
      }
    }
  }
}

main {
  max-width: 940px;
  margin: 0 auto;
  padding: var(--quack-space-12) var(--quack-space-6) var(--quack-space-16);
}

.description {
  margin-bottom: var(--quack-space-12);

  h1 {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 700;
    line-height: 1.05;
  }

  p {
    margin-top: var(--quack-space-3);
    font-size: var(--quack-text-lg);
    color: var(--quack-text-secondary);
    max-width: 62ch;
  }
}

code {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
}

section {
  padding: var(--quack-space-8) 0;
  border-top: 1px solid var(--quack-border-200);

  .head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: var(--quack-space-4);
    margin-bottom: var(--quack-space-5);
    flex-wrap: wrap;

    .title {
      font-size: var(--quack-text-xl);
      font-weight: 700;
    }

    .class {
      font-family: 'JetBrains Mono', ui-monospace, monospace;
      font-size: var(--quack-text-xs);
      color: var(--quack-text-muted);
    }
  }
}

.stack {
  display: flex;
  flex-direction: column;
  gap: var(--quack-space-4);
}

.row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--quack-space-3);
  align-items: center;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--quack-space-4);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--quack-space-3);
}

@media (max-width: 620px) {
  .grid-2 {
    grid-template-columns: 1fr;
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

.subtitle {
  font-size: var(--quack-text-xs);
  font-weight: 600;
  color: var(--quack-text-muted);
  margin-bottom: var(--quack-space-2);
}

.swatch {
  display: flex;
  flex-direction: column;
  gap: 6px;

  .box {
    height: 52px;
    border-radius: var(--quack-radius-md);
    border: 1px solid var(--quack-border-400);
  }

  .name {
    font-size: 11px;
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    color: var(--quack-text-muted);
  }
}

.text-box {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.tabs .quack-tabs-panels {
  padding-top: var(--quack-space-2);
}

.tabs:has(.t1:checked) .quack-tabs-panel:nth-of-type(1),
.tabs:has(.t2:checked) .quack-tabs-panel:nth-of-type(2),
.tabs:has(.t3:checked) .quack-tabs-panel:nth-of-type(3) {
  display: block;
}

.note {
  font-size: var(--quack-text-xs);
  color: var(--quack-text-muted);
  margin-top: var(--quack-space-4);
}

.quack-frame-square.image {
  display: grid;
  place-content: center;
  color: var(--quack-text-muted);
}

.quack-frame-video.video {
  display: grid;
  place-content: center;
  color: var(--quack-text-muted);
}

.quack-frame-portrait.portrait {
  display: grid;
  place-content: center;
  color: var(--quack-text-muted);
  max-width: 200px;
}