/* ============================================================
   Documentation Library — /docs.html
   Nexus page: 5 destinations + a quick-link strip. Compact,
   image-forward, intended to fit above the fold on desktop.
   ============================================================ */

.docs,
.docs *,
.docs *::before,
.docs *::after {
  box-sizing: border-box;
}

/* Override .first-container padding on this page so docs content aligns with
   guides/tools (which use 2rem total horizontal padding and don't carry the
   3rem first-container side padding). */
.first-container:has(.docs) {
  padding: 0 1rem;
  max-width: 1440px;
}

.docs {
  font-family: 'Inter', 'Roboto', Arial, sans-serif;
  color: #111827;
  /* 10rem on mobile to clear the fixed .navigation without H1 clipping (8rem was tight on small viewports). */
  padding: 10rem 1rem 3rem;
}

@media (min-width: 768px) {
  .docs {
    padding-top: 9rem;
  }
}

@media (min-width: 1024px) {
  .docs {
    padding-top: 10rem;
  }
}

/* ---------- Hero (very compact) ---------------------------------- */
.docs-hero {
  padding: 0 0 1.25rem;
  border-bottom: 1px solid #e5e7eb;
  margin: 0 0 1.5rem;
  max-width: 56rem;
}

.docs-hero-eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #2563eb;
  margin: 0 0 0.5rem;
}

.docs-hero-title {
  font-size: clamp(1.625rem, 2.8vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 0.4rem;
  color: #0f172a;
  line-height: 1.15;
}

.docs-hero-sub {
  font-size: 0.9375rem;
  color: #4b5563;
  margin: 0;
  line-height: 1.5;
  max-width: 42rem;
}

/* ---------- Featured catalog tile -------------------------------- */
.docs-feature {
  display: flex;
  align-items: center;
  gap: 2rem;
  padding: 1.5rem 1.75rem;
  background: linear-gradient(135deg, #f8fafc 0%, #eff6ff 100%);
  border: 1px solid #e5e7eb;
  border-radius: 0.875rem;
  text-decoration: none;
  color: inherit;
  margin: 0 0 1rem;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.docs-feature:hover {
  border-color: #2563eb;
  box-shadow: 0 10px 26px -14px rgba(37, 99, 235, 0.22);
}

.docs-feature-image {
  flex: 0 0 180px;
  width: 180px;
  display: block;
}

.docs-feature-image img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: 0.25rem;
  box-shadow: 0 14px 30px -14px rgba(15, 23, 42, 0.35),
              0 4px 10px -6px rgba(15, 23, 42, 0.18);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.docs-feature:hover .docs-feature-image img {
  transform: translateY(-2px) rotate(-0.5deg);
  box-shadow: 0 20px 40px -14px rgba(15, 23, 42, 0.4),
              0 6px 14px -6px rgba(15, 23, 42, 0.22);
}

.docs-feature-body {
  flex: 1 1 auto;
  min-width: 0;
}

.docs-feature-badge {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #1d4ed8;
  background: #dbeafe;
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
  margin: 0 0 0.625rem;
}

.docs-feature-title {
  font-size: clamp(1.375rem, 2vw, 1.625rem);
  font-weight: 700;
  color: #0f172a;
  letter-spacing: -0.015em;
  margin: 0 0 0.4rem;
  line-height: 1.2;
}

.docs-feature-desc {
  font-size: 0.9375rem;
  color: #4b5563;
  margin: 0 0 0.875rem;
  line-height: 1.55;
  max-width: 36rem;
}

.docs-feature-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9375rem;
  font-weight: 600;
  color: #2563eb;
}

.docs-feature-cta svg { transition: transform 0.15s ease; flex-shrink: 0; }
.docs-feature:hover .docs-feature-cta svg { transform: translateX(4px); }

/* ---------- 4-up hub row ----------------------------------------- */
.docs-hubs {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
  margin: 0 0 1.25rem;
}

.docs-hub {
  display: flex;
  flex-direction: column;
  padding: 1.125rem 1.125rem 1rem;
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 0.625rem;
  text-decoration: none;
  color: inherit;
  min-width: 0;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}

.docs-hub:hover {
  border-color: #cbd5e1;
  box-shadow: 0 6px 18px -10px rgba(15, 23, 42, 0.18);
  transform: translateY(-2px);
}

.docs-hub-icon {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 0.4rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: 0 0 0.75rem;
  flex-shrink: 0;
}

.docs-hub[data-hub="brochures"]  .docs-hub-icon { background: #ecfeff; color: #0891b2; }
.docs-hub[data-hub="sds"]        .docs-hub-icon { background: #fef2f2; color: #dc2626; }
.docs-hub[data-hub="procedures"] .docs-hub-icon { background: #f0fdf4; color: #16a34a; }
.docs-hub[data-hub="etchants"]   .docs-hub-icon { background: #fff7ed; color: #ea580c; }

.docs-hub-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: #0f172a;
  letter-spacing: -0.01em;
  margin: 0 0 0.3rem;
  line-height: 1.25;
}

.docs-hub-desc {
  font-size: 0.8125rem;
  color: #4b5563;
  margin: 0 0 0.75rem;
  line-height: 1.5;
  flex: 1;
}

.docs-hub-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: #2563eb;
}

.docs-hub-cta svg { transition: transform 0.15s ease; flex-shrink: 0; }
.docs-hub:hover .docs-hub-cta svg { transform: translateX(3px); }

/* ---------- Quick links strip ------------------------------------ */
.docs-quicklinks {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1.25rem;
  padding: 0.875rem 1.25rem;
  background: #f9fafb;
  border: 1px solid #e5e7eb;
  border-radius: 0.5rem;
}

.docs-quicklinks-label {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: #6b7280;
  margin-right: 0.25rem;
}

.docs-quicklinks a {
  font-size: 0.875rem;
  font-weight: 500;
  color: #374151;
  text-decoration: none;
  padding: 0.2rem 0;
  border-bottom: 1px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.docs-quicklinks a:hover {
  color: #2563eb;
  border-bottom-color: #2563eb;
}

/* ---------- Tablet ----------------------------------------------- */
@media (max-width: 960px) {
  .docs-hubs { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.75rem; }
  .docs-feature-image { flex-basis: 150px; width: 150px; }
}

/* ---------- Mobile ----------------------------------------------- */
@media (max-width: 640px) {
  .docs { padding: 9rem 1rem 2.5rem; } /* keep top padding generous to clear fixed nav */
  .docs-hero { padding-bottom: 1rem; margin-bottom: 1.25rem; }

  .docs-feature {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 1.25rem;
    padding: 1.5rem 1.25rem;
  }
  .docs-feature-image { flex-basis: auto; width: 140px; }
  .docs-feature-desc { margin-left: auto; margin-right: auto; }
  .docs-feature-cta { margin: 0 auto; }

  .docs-hubs { grid-template-columns: 1fr; gap: 0.625rem; }
  .docs-hub { padding: 1rem 1.125rem; }

  .docs-quicklinks { padding: 0.875rem 1rem; gap: 0.4rem 1rem; }
  .docs-quicklinks-label { width: 100%; margin: 0 0 0.25rem; }
}

/* ---------- Reduced motion --------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  .docs-feature,
  .docs-feature-image img,
  .docs-feature-cta svg,
  .docs-hub,
  .docs-hub-cta svg,
  .docs-quicklinks a {
    transition: none !important;
    transform: none !important;
  }
}