/* Home page cards: visual previews and soft exterior hover glow. */

/* Hero adapted from the supplied Grok concept, within the existing static site. */
.home-hero {
  width: 100vw;
  margin-top: -3rem;
  margin-left: calc(50% - 50vw);
  padding: 7rem max(2rem, calc((100vw - var(--max-w)) / 2 + 2rem)) 5rem;
  min-height: 650px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.home-hero-bg,
.home-hero-shade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.home-hero-bg { z-index: -3; object-fit: cover; object-position: center 58%; opacity: .52; }
.home-hero-shade {
  z-index: -2;
  background:
    linear-gradient(90deg, rgba(11, 15, 20, .95) 0%, rgba(11, 15, 20, .8) 45%, rgba(11, 15, 20, .42) 76%, rgba(11, 15, 20, .62) 100%),
    linear-gradient(180deg, rgba(11, 15, 20, .28), rgba(11, 15, 20, .98) 96%);
}
.home-hero .glow { z-index: -1; }
.home-hero h1 { max-width: 790px; }
.home-hero .lead { max-width: 650px; }
.home-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  max-width: var(--max-w);
  padding: 1px;
  overflow: hidden;
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  background: var(--border-strong);
}
.home-stats > div { padding: 1.25rem 1.4rem; background: rgba(18, 23, 30, .86); }
.home-stats .stat-label { margin: 0 0 .55rem; }
.home-stats .stat-num { color: var(--text); }

.capability-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: .75rem; }
.capability-grid article {
  padding: 1.2rem;
  border: 1px solid var(--border);
  border-radius: 11px;
  background: var(--bg-elevated);
  transition: border-color .25s ease, background .25s ease, transform .25s ease;
}
.capability-grid article:hover { border-color: var(--accent-line); background: #10151c; transform: translateY(-2px); }
.capability-grid span { color: var(--accent); font: 600 .68rem var(--font-mono); }
.capability-grid h3 { margin: .75rem 0 .45rem; font-size: .98rem; line-height: 1.25; }
.capability-grid p { color: var(--text-muted); font-size: .82rem; line-height: 1.55; }

.home-card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
}

.home-card,
.case-teaser {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border: 1px solid var(--border);
  background: linear-gradient(145deg, rgba(24, 30, 39, .88), rgba(15, 20, 27, .96));
  box-shadow: 0 12px 40px rgba(0, 0, 0, .08);
  transition: box-shadow .35s ease;
}

.home-card:hover,
.home-card:focus-visible,
.home-card:focus-within,
.case-teaser:hover,
.case-teaser:focus-visible {
  box-shadow: 0 18px 55px rgba(0, 0, 0, .28), 0 0 32px rgba(232, 200, 114, .11);
  outline: none;
}

.home-card:focus-visible,
.case-teaser:focus-visible { box-shadow: 0 0 0 2px var(--bg), 0 0 0 4px var(--accent-line); }

.home-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  border-radius: 16px;
}

.home-card-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 1.25rem;
}

/* Tool previews */
.tool-card-preview {
  position: relative;
  aspect-ratio: 16 / 9;
  margin: .55rem .55rem 0;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, .08);
  border-radius: 11px;
  background: #e8e3d5;
}

.tool-card-preview::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, transparent 62%, rgba(5, 8, 12, .18));
}

.tool-card-preview img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top left;
  transition: transform .7s cubic-bezier(.2, .8, .2, 1), filter .35s ease;
}

.tool-card-preview-dark { background: #090d11; }
.tool-card:hover .tool-card-preview img,
.tool-card:focus-visible .tool-card-preview img { transform: scale(1.035); filter: saturate(1.08); }

.tool-card .card-head { margin-bottom: .65rem; }
.tool-card .card-foot { margin-top: 1rem; }
.tool-card .card-arrow,
.book-card .card-arrow,
.post-card .card-arrow { transition: transform .3s ease; }
.tool-card:hover .card-arrow,
.book-card:hover .card-arrow,
.post-card:hover .card-arrow { transform: translateX(4px); }

/* Book cards */
.book-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.book-card { padding: .55rem; }
.book-card .home-card-body { padding: 1.15rem .7rem .7rem; }
.book-cover-link,
.book-title-link { display: block; color: inherit; }
.book-cover {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 11px;
  box-shadow: 0 12px 26px rgba(0, 0, 0, .22);
  transition: transform .7s cubic-bezier(.2, .8, .2, 1), filter .35s ease;
}
.book-card:hover .book-cover { transform: scale(1.018); filter: saturate(1.05); }
.book-card .article-title { font-size: 1.3rem; }
.book-card .article-desc { flex: 1; }

.card-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1rem;
  padding-top: .85rem;
  border-top: 1px solid var(--border);
  color: var(--text-dark);
  font-size: .76rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
}

/* Cases */
.case-teaser {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: clamp(1.5rem, 4vw, 3rem);
  border-radius: 18px;
  background:
    linear-gradient(90deg, rgba(18, 23, 30, .98), rgba(10, 14, 19, .96)),
    var(--bg-elevated);
}
.case-teaser h3 {
  max-width: 720px;
  margin: .85rem 0 .7rem;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.4vw, 2.35rem);
  line-height: 1.16;
  letter-spacing: -.025em;
}
.case-teaser p { max-width: 720px; color: var(--text-muted); line-height: 1.65; }
.case-state {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  color: var(--accent);
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.case-state i { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 16px rgba(232, 200, 114, .55); animation: pulse 2s infinite; }
.case-arrow { flex: 0 0 auto; color: var(--accent); font-size: 2rem; transition: transform .3s ease; }
.case-teaser:hover .case-arrow { transform: translateX(6px); }

/* Latest posts: useful static content first, refreshed from feed.xml when newer. */
.post-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.25rem; }
.post-card { min-height: 100%; }
.post-card-cover { aspect-ratio: 16 / 9; margin: .55rem .55rem 0; overflow: hidden; border-radius: 11px; background: var(--bg); }
.post-card-cover img { width: 100%; height: 100%; display: block; object-fit: cover; transition: transform .7s cubic-bezier(.2,.8,.2,1), filter .35s ease; }
.post-card:hover .post-card-cover img { transform: scale(1.035); filter: saturate(1.08); }
.post-card .article-title { font-size: 1.3rem; }
.post-card .article-desc { flex: 1; }
.feed-note { margin-top: 1rem; color: var(--text-muted); }
.feed-note a { color: var(--accent); }

.home-contact {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  margin-top: 2rem;
  padding: 4rem 0 1rem;
  border-top: 1px solid var(--border);
}
.home-contact h2 { font-family: var(--font-display); font-size: clamp(2rem, 4vw, 3rem); letter-spacing: -.025em; }
.home-contact p { max-width: 570px; margin-top: .65rem; color: var(--text-muted); line-height: 1.6; }

@media (max-width: 900px) {
  .capability-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .home-card-grid,
  .post-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .home-tool-grid .tool-card:last-child { grid-column: 1 / -1; }
  .home-tool-grid .tool-card:last-child .tool-card-preview { aspect-ratio: 2.1 / 1; }
  .book-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 600px) {
  .home-hero {
    margin-top: -2rem;
    min-height: 620px;
    padding: 5rem 1.25rem 3.5rem;
  }
  .home-hero-bg { object-position: 63% center; opacity: .42; }
  .home-hero-shade { background: linear-gradient(90deg, rgba(11,15,20,.93), rgba(11,15,20,.58)), linear-gradient(180deg, rgba(11,15,20,.4), rgba(11,15,20,.98)); }
  .home-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; }
  .home-stats > div { padding: 1rem; }
  .capability-grid { grid-template-columns: 1fr; }
  .home-card-grid,
  .post-grid { grid-template-columns: 1fr; }
  .home-tool-grid .tool-card:last-child { grid-column: auto; }
  .home-tool-grid .tool-card:last-child .tool-card-preview { aspect-ratio: 16 / 9; }
  .book-grid { grid-template-columns: 1fr; }
  .case-teaser { align-items: flex-end; gap: 1rem; }
  .home-contact { align-items: stretch; flex-direction: column; padding-top: 3rem; }
  .home-contact .btn-primary { justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  .home-card,
  .case-teaser,
  .tool-card-preview img,
  .post-card-cover img,
  .book-cover,
  .card-arrow,
  .case-arrow { transition: none !important; }
  .home-card:hover,
  .home-card:focus-visible,
  .case-teaser:hover,
  .case-teaser:focus-visible,
  .tool-card:hover .tool-card-preview img,
  .tool-card:focus-visible .tool-card-preview img,
  .post-card:hover .post-card-cover img,
  .book-card:hover .book-cover { transform: none; }
  .case-state i { animation: none; }
}