/* Harve Help Center — shared styles (hub, collections, articles) */
:root {
  --text-primary: rgba(10, 28, 92, 0.92);
  --text-secondary: rgba(40, 75, 155, 0.62);
  --text-muted: rgba(80, 110, 175, 0.52);
  --border: rgba(10, 28, 92, 0.08);
  --card: rgba(255, 255, 255, 0.88);
  --cta: rgba(10, 28, 92, 0.88);
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

/* —— Motion (matches landing.html feel) —— */
@keyframes hc-fade-up {
  from { opacity: 0; transform: translateY(22px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes hc-fade-down {
  from { opacity: 0; transform: translateY(-14px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes hc-fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'DM Sans', sans-serif;
  color: var(--text-primary);
  min-height: 100vh;
  background:
    radial-gradient(ellipse at 25% 10%, rgba(255,255,255,0.65) 0%, transparent 45%),
    radial-gradient(ellipse at 80% 90%, rgba(180,200,235,0.45) 0%, transparent 50%),
    linear-gradient(165deg, #dce8f8 0%, #c8d9f0 50%, #bccde8 100%);
  background-attachment: fixed;
  line-height: 1.6;
}

/* —— Shell —— */
.hc-top {
  max-width: 1100px; margin: 0 auto; padding: 18px 24px;
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  animation: hc-fade-down 580ms var(--ease-out) both;
  animation-delay: 40ms;
}
.hc-top a.logo {
  display: inline-flex; align-items: center; gap: 10px;
  text-decoration: none; color: var(--text-primary); font: 600 18px 'Alice', serif;
  transition: opacity 180ms ease, transform 200ms var(--ease-out);
}
.hc-top a.logo:hover { opacity: 0.82; transform: translateY(-1px); }
.hc-top .hc-nav a {
  font-size: 14px; color: var(--text-secondary); text-decoration: none; margin-left: 18px;
  transition: color 160ms ease, opacity 160ms ease;
}
.hc-top .hc-nav a:hover { color: var(--text-primary); text-decoration: underline; }

.breadcrumb {
  max-width: 1100px; margin: 0 auto; padding: 8px 24px 0;
  font-size: 13px; color: var(--text-muted);
  animation: hc-fade-in 520ms ease both;
  animation-delay: 90ms;
}
.breadcrumb a {
  color: var(--text-secondary); text-decoration: none;
  transition: color 150ms ease, opacity 150ms ease;
}
.breadcrumb a:hover { text-decoration: underline; color: var(--text-primary); }

/* —— Collection page —— */
.collection-wrap { max-width: 720px; margin: 0 auto; padding: 24px 24px 80px; }
.collection-head {
  display: flex; align-items: flex-start; gap: 20px; margin-bottom: 28px;
  animation: hc-fade-up 620ms var(--ease-out) both;
  animation-delay: 110ms;
}
.collection-icon {
  width: 56px; height: 56px; border-radius: 50%;
  background: linear-gradient(145deg, rgba(220,235,255,0.9), rgba(180,200,235,0.5));
  border: 1px solid rgba(255,255,255,0.9);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
  color: var(--text-primary);
  transition: transform 220ms var(--ease-out), box-shadow 220ms ease;
}
.collection-head:hover .collection-icon {
  transform: scale(1.04);
  box-shadow: 0 6px 20px rgba(10, 28, 92, 0.1);
}
.collection-head h1 {
  font-family: 'Alice', serif; font-size: 32px; font-weight: normal;
  margin-bottom: 6px; line-height: 1.15;
}
.collection-head .sub { font-size: 16px; color: var(--text-secondary); margin-bottom: 6px; }
.collection-head .meta { font-size: 12px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.06em; }

.article-list {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(10, 28, 92, 0.06);
  animation: hc-fade-up 640ms var(--ease-out) both;
  animation-delay: 200ms;
}
.article-row {
  display: flex; align-items: stretch;
  border-bottom: 1px solid var(--border);
  text-decoration: none; color: inherit;
  transition: background 220ms ease, box-shadow 220ms ease;
}
.article-row:last-child { border-bottom: none; }
.article-row:hover {
  background: rgba(220, 235, 255, 0.42);
  box-shadow: inset 4px 0 0 rgba(10, 28, 92, 0.1);
}
.article-row-inner {
  flex: 1; padding: 20px 22px; min-width: 0;
  transition: transform 200ms var(--ease-out);
}
.article-row:hover .article-row-inner { transform: translateX(2px); }
.article-row h2 { font-size: 16px; font-weight: 600; color: var(--text-primary); margin-bottom: 6px; transition: color 180ms ease; }
.article-row p { font-size: 14px; color: var(--text-secondary); line-height: 1.5; }
.article-row-chev {
  display: flex; align-items: center; padding: 0 18px; color: var(--text-muted);
  flex-shrink: 0;
  transition: transform 220ms var(--ease-out), color 180ms ease;
}
.article-row:hover .article-row-chev {
  transform: translateX(5px);
  color: var(--text-primary);
}

/* —— Article page (with optional TOC) —— */
.article-shell {
  max-width: 1100px; margin: 0 auto; padding: 0 24px 100px;
  animation: hc-fade-up 660ms var(--ease-out) both;
  animation-delay: 100ms;
}
.article-layout {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 48px; align-items: start;
  padding-top: 8px;
}
@media (max-width: 900px) {
  .article-layout { grid-template-columns: 1fr; }
  .article-toc { display: none; }
}

.article-main { min-width: 0; max-width: 720px; }
.article-main h1 {
  font-family: 'Alice', serif; font-size: 34px; font-weight: normal;
  margin-bottom: 12px; line-height: 1.15;
}
.article-lead {
  font-size: 17px; color: var(--text-secondary); margin-bottom: 8px;
  animation: hc-fade-in 500ms ease both;
  animation-delay: 180ms;
}
.article-updated {
  font-size: 13px; color: var(--text-muted); margin-bottom: 28px;
  animation: hc-fade-in 450ms ease both;
  animation-delay: 240ms;
}

.prose {
  font-size: 16px; color: var(--text-secondary);
  animation: hc-fade-in 560ms ease both;
  animation-delay: 280ms;
}
.prose p { margin-bottom: 16px; }
.prose h2 {
  font-family: 'Alice', serif; font-size: 24px; font-weight: normal;
  color: var(--text-primary); margin: 36px 0 14px;
  scroll-margin-top: 24px;
}
.prose h3 {
  font-size: 17px; font-weight: 600; color: var(--text-primary);
  margin: 24px 0 10px;
}
.prose ol, .prose ul { margin: 0 0 16px 22px; }
.prose li { margin-bottom: 8px; }
.prose strong { color: var(--text-primary); }
.prose a { color: var(--cta); text-decoration: underline; text-underline-offset: 2px; }
.prose a:hover { opacity: 0.85; }
.prose code {
  font-size: 0.9em; padding: 2px 6px; border-radius: 4px;
  background: rgba(10, 28, 92, 0.06); color: var(--text-primary);
}

.figure {
  margin: 24px 0; border-radius: 12px; overflow: hidden;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.5);
  transition: box-shadow 280ms ease, transform 280ms var(--ease-out);
}
.article-main .figure:hover {
  box-shadow: 0 10px 36px rgba(10, 28, 92, 0.1);
  transform: translateY(-2px);
}
.figure img, .figure video {
  width: 100%; height: auto; display: block; vertical-align: middle;
  transition: opacity 300ms ease;
}
.figure figcaption {
  font-size: 13px; color: var(--text-muted); padding: 10px 14px;
  background: rgba(255,255,255,0.6);
}

/* TOC sidebar */
.article-toc {
  position: sticky; top: 24px;
  padding: 16px 0 16px 20px;
  border-left: 2px solid var(--border);
  animation: hc-fade-up 580ms var(--ease-out) both;
  animation-delay: 260ms;
}
.article-toc-title {
  font-size: 11px; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--text-muted); margin-bottom: 12px;
}
.article-toc ul { list-style: none; }
.article-toc li { margin-bottom: 8px; }
.article-toc a {
  font-size: 14px; color: var(--text-secondary); text-decoration: none;
  display: block; line-height: 1.35;
  transition: color 160ms ease, transform 180ms var(--ease-out);
}
.article-toc a:hover {
  color: var(--text-primary);
  text-decoration: underline;
  transform: translateX(3px);
}
.article-toc ul ul { margin-top: 6px; margin-left: 12px; padding-left: 10px; border-left: 1px solid var(--border); }

.hc-foot {
  text-align: center; padding: 40px 24px; font-size: 13px; color: var(--text-muted);
  animation: hc-fade-in 520ms ease both;
  animation-delay: 320ms;
}
.hc-foot a {
  color: var(--text-secondary);
  transition: color 150ms ease, opacity 150ms ease;
}
.hc-foot a:hover { color: var(--text-primary); }

/* Simple article (no TOC) */
.article-simple {
  max-width: 720px; margin: 0 auto; padding: 16px 24px 80px;
  animation: hc-fade-up 640ms var(--ease-out) both;
  animation-delay: 100ms;
}
.article-simple .article-main h1 { margin-top: 8px; }
.article-simple .prose { animation-delay: 200ms; }

/* Media placeholder box */
.media-placeholder {
  aspect-ratio: 16/9; background: linear-gradient(135deg, #e8eef8, #d4e2f4);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); font-size: 14px; text-align: center; padding: 24px;
  transition: background 300ms ease;
}
.figure:hover .media-placeholder {
  background: linear-gradient(135deg, #e0eaf8, #cce0f4);
}

/* —— Hub-only (support.html) —— */
body.support-hub .hero h1 {
  animation: hc-fade-down 620ms var(--ease-out) both;
  animation-delay: 120ms;
}
body.support-hub .hero .search-wrap {
  animation: hc-fade-up 620ms var(--ease-out) both;
  animation-delay: 220ms;
}
body.support-hub .hero .search-hint {
  animation: hc-fade-in 480ms ease both;
  animation-delay: 360ms;
}
body.support-hub #support-search {
  transition: border-color 220ms ease, box-shadow 280ms ease, transform 200ms var(--ease-out);
}
body.support-hub #support-search:focus {
  transform: translateY(-1px);
  box-shadow: 0 8px 32px rgba(10, 28, 92, 0.12);
}
/* Stagger grid as one block (avoids search-filter opacity bugs) */
body.support-hub .grid-wrap {
  animation: hc-fade-up 640ms var(--ease-out) both;
  animation-delay: 300ms;
}
body.support-hub #cat-grid .cat-card {
  transition: transform 220ms var(--ease-out), box-shadow 260ms ease, border-color 200ms ease;
}
body.support-hub #cat-grid .cat-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 40px rgba(10, 28, 92, 0.12);
}
body.support-hub #cat-grid .cat-icon {
  transition: transform 240ms var(--ease-out), background 200ms ease;
}
body.support-hub #cat-grid .cat-card:hover .cat-icon {
  transform: scale(1.06);
}
body.support-hub #cat-grid .cat-card.hidden {
  display: none;
}

/* Scroll reveal (optional, for long articles) */
.hc-reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 600ms var(--ease-out), transform 600ms var(--ease-out);
}
.hc-reveal.hc-reveal--visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .hc-top, .breadcrumb, .collection-head, .article-list, .article-shell, .article-simple,
  .article-toc, .hc-foot, .article-lead, .article-updated, .prose,
  body.support-hub .hero h1, body.support-hub .hero .search-wrap, body.support-hub .hero .search-hint,
  body.support-hub .grid-wrap {
    animation: none !important;
    transition-duration: 0.01ms !important;
  }
  .hc-reveal { opacity: 1; transform: none; transition: none; }
}