/* Hylograph.net */

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

:root {
  --bg-page: #f5f5f5;
  --bg-card: #ffffff;
  --border: #e0e0e0;
  --text-primary: #333;
  --text-muted: #666;
  --shadow-card: 0 4px 12px rgba(0,0,0,0.1);
  --radius: 8px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg-page);
  color: var(--text-primary);
  line-height: 1.6;
}

/* Logo Curtain */
.curtain {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: white;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  transition: opacity 0.6s ease-out, visibility 0.6s;
}

.curtain--hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.curtain__logo {
  /* Same size as one quadrant box: (800px - 1.5rem gap) / 2 */
  width: calc((min(800px, 100vw - 3rem) - 1.5rem) / 2);
  height: calc((min(800px, 100vw - 3rem) - 1.5rem) / 2);
  object-fit: contain;
}

.curtain__logotype {
  font-size: 2rem;
  font-weight: 300;
  letter-spacing: 0.2em;
  text-transform: lowercase;
  color: var(--text-primary);
}

/* Main layout */
.docs-landing {
  padding: 3rem 1.5rem;
}

/* Docs Quadrant - 2x2 grid of square boxes */
.docs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  max-width: 800px;
  margin: 0 auto 3rem;
}

@media (max-width: 600px) {
  .docs-grid {
    grid-template-columns: 1fr;
  }
}

/* Doc card - square with horizontal layout */
.doc-card {
  display: flex;
  flex-direction: row;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  aspect-ratio: 1;
  transition: box-shadow 0.2s, border-color 0.2s;
}

.doc-card:hover {
  box-shadow: var(--shadow-card);
  border-color: #999;
}

.doc-card__image {
  width: 100px;
  flex-shrink: 0;
  overflow: hidden;
  background: var(--bg-page);
}

.doc-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.doc-card__content {
  flex: 1;
  padding: 1rem 1.25rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.doc-card__content h2 {
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.doc-card__content p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.5;
}

@media (max-width: 600px) {
  .doc-card__image {
    width: 80px;
  }
}

/* Libraries nav */
.libraries {
  max-width: 800px;
  margin: 0 auto 2.5rem;
}

.libraries:last-of-type {
  margin-bottom: 0;
}

.libraries h3 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #999;
  margin-bottom: 1rem;
}

.lib-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 0.75rem;
}

.lib-list li {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.75rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  transition: border-color 0.2s;
}

.lib-list li:hover {
  border-color: #999;
}

.lib-list a {
  color: var(--text-primary);
  text-decoration: none;
  font-family: monospace;
  font-size: 0.9rem;
  font-weight: 500;
}

.lib-list a:hover {
  text-decoration: underline;
}

.lib-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Footer */
footer {
  text-align: center;
  padding: 2rem;
  color: #999;
  font-size: 0.85rem;
}

footer a {
  color: #666;
}