/* Detail page stylesheet — extends the homepage design system.
   Shared tokens live in main.css; this file adds detail-only layout. */

@import url('main.css');

/* Detail header */
.detail-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  border-bottom: 1px solid var(--grid);
  background: var(--bg-overlay);
  backdrop-filter: blur(12px);
}

.detail-header .header-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  transition: color 0.2s ease;
}

.back-link:hover {
  color: var(--accent);
}

.detail-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.detail-nav {
  display: none;
}

/* Detail layout */
.detail-layout {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 64px 24px 120px;
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 64px;
  align-items: start;
}

.detail-sidebar {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  max-height: calc(100vh - var(--header-h) - 48px);
  overflow-y: auto;
}

.detail-toc {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.detail-toc a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  border-radius: var(--radius);
  transition: color 0.2s ease, background 0.2s ease;
}

.detail-toc a:hover,
.detail-toc a[aria-current="true"] {
  color: var(--text);
  background: var(--surface);
}

.detail-toc i {
  width: 18px;
  text-align: center;
  color: var(--accent);
}

/* Detail content */
.detail-main {
  display: flex;
  flex-direction: column;
  gap: 80px;
}

.detail-section {
  scroll-margin-top: calc(var(--header-h) + 32px);
}

.detail-section h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
}

.detail-section h2::before {
  content: "#";
  color: var(--accent);
  margin-right: 10px;
}

.detail-section p,
.detail-section li {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.65;
  margin: 0 0 16px;
}

.detail-section p strong,
.detail-section li strong {
  color: var(--text);
  font-weight: 600;
}

.detail-section ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.detail-section ul > li {
  position: relative;
  padding-left: 22px;
}

.detail-section ul > li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

.detail-section ol {
  padding-left: 24px;
  margin: 0;
}

.detail-section ol > li {
  padding-left: 6px;
  margin-bottom: 16px;
}

.detail-section ol > li::marker {
  color: var(--accent);
  font-family: var(--font-mono);
  font-weight: 700;
}

.detail-section code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--surface);
  padding: 2px 6px;
  border-radius: var(--radius);
  color: var(--text);
}

/* Section connectors */
.detail-section .section-connector {
  margin-bottom: 20px;
}

/* CTA blocks */
.detail-cta {
  background: var(--surface);
  border: 1px solid var(--grid);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-top: 8px;
}

.detail-cta p {
  margin: 0 0 16px;
}

.detail-cta a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: var(--ink);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 12px 20px;
  border-radius: var(--radius);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.detail-cta a:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--accent-glow);
}

/* Responsive */
@media (max-width: 900px) {
  .detail-layout {
    grid-template-columns: 1fr;
    padding: 24px 20px 80px;
    gap: 24px;
  }

  .detail-sidebar {
    position: static;
    order: -1;
    max-height: none;
  }

  .detail-toc {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 8px;
  }

  .detail-toc a {
    flex: 1 1 auto;
    justify-content: center;
    min-width: 120px;
  }

  .detail-toc i {
    display: none;
  }

  .detail-main {
    gap: 48px;
  }
}

@media (max-width: 480px) {
  .detail-header .header-container {
    padding: 0 16px;
  }

  .detail-title {
    font-size: 0.95rem;
  }

  .detail-toc a {
    min-width: 120px;
    font-size: 0.7rem;
    padding: 8px;
  }
}