/* ============================================================
   HOME.CSS — homepage sections
   Loaded only on index.html. Uses theme.css tokens.
   ============================================================ */

/* ── Section heads ── */
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}
.section-head-center {
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 8px;
}
.section-title {
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
  line-height: 1.2;
}
.section-sub {
  color: var(--text-dim);
  font-size: 0.98rem;
  margin-top: 6px;
  max-width: 620px;
  line-height: 1.6;
}
.section-link {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.94rem;
  white-space: nowrap;
}
.section-link:hover { color: var(--code); }

/* ── Hero ── */
.hero {
  position: relative;
  padding: 80px 0 96px;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 0%, var(--accent-glow), transparent 45%),
    radial-gradient(circle at 80% 100%, color-mix(in srgb, var(--code), transparent 92%), transparent 45%);
  pointer-events: none;
  z-index: 0;
}
.hero .container { position: relative; z-index: 1; }
.hero-inner { max-width: 780px; margin: 0 auto; text-align: center; }

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--accent-glow);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.02em;
  margin-bottom: 28px;
}

.hero-title {
  font-size: clamp(2.4rem, 6vw, 4rem);
  line-height: 1.05;
  font-weight: 900;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 22px;
}
.hero-title .accent {
  color: var(--accent);
  position: relative;
  display: inline-block;
}
.hero-title .accent::after {
  content: "";
  position: absolute;
  left: 0; right: 0;
  bottom: 0.05em;
  height: 0.18em;
  background: var(--code);
  opacity: 0.32;
  border-radius: 4px;
  z-index: -1;
}

.hero-sub {
  font-size: clamp(1rem, 1.6vw, 1.1rem);
  line-height: 1.75;
  color: var(--text-dim);
  max-width: 640px;
  margin: 0 auto 36px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.hero-actions .btn { padding: 13px 26px; font-size: 1rem; }

.hero-bullets {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  color: var(--text-dim);
  font-size: 0.9rem;
  font-weight: 500;
}
.hero-bullets li::first-letter { color: var(--code); }

/* ── Post grid ── */
.featured { padding: 8px 0 72px; }
.recent   { padding: 8px 0 72px; }

.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 22px;
}

.post-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 26px 26px 22px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: var(--text);
  transition: transform .25s cubic-bezier(.22,1,.36,1),
              border-color .25s,
              box-shadow .25s;
  min-height: 240px;
}
.post-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: var(--shadow-lg);
}
.post-card:hover .post-card-title { color: var(--code); }

.post-card-cat {
  align-self: flex-start;
  padding: 4px 11px;
  background: var(--accent-glow);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
}
.post-card-title {
  font-size: 1.18rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--text);
  letter-spacing: -0.01em;
  transition: color .2s;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.post-card-excerpt {
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--text-dim);
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.post-card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  font-size: 0.82rem;
  color: var(--text-dim);
  flex-wrap: wrap;
}
.post-card-avatar {
  width: 24px; height: 24px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-dim));
  color: var(--bg);
  font-weight: 800;
  font-size: 11px;
  flex: none;
}
.post-card-author { color: var(--text-muted); font-weight: 500; }
.dot { opacity: 0.5; }

/* ── Skeleton ── */
.skeleton { pointer-events: none; }
.sk-line, .sk-avatar {
  background: linear-gradient(90deg,
    color-mix(in srgb, var(--text), transparent 94%) 0%,
    color-mix(in srgb, var(--text), transparent 88%) 50%,
    color-mix(in srgb, var(--text), transparent 94%) 100%);
  background-size: 200% 100%;
  animation: shimmer 1.4s ease-in-out infinite;
  border-radius: 6px;
}
.sk-line { height: 12px; margin-bottom: 10px; }
.sk-cat  { width: 60px; height: 20px; border-radius: 999px; margin-bottom: 16px; }
.sk-title { width: 90%; height: 18px; }
.sk-title.short { width: 65%; }
.sk-text  { width: 100%; height: 11px; }
.sk-text.short { width: 75%; }
.sk-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-top: 14px;
  margin-top: auto;
  border-top: 1px solid var(--border);
}
.sk-avatar { width: 24px; height: 24px; border-radius: 50%; flex: none; }
@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ── Empty state ── */
.empty-state {
  grid-column: 1 / -1;
  padding: 40px 24px;
  text-align: center;
  color: var(--text-dim);
  background: var(--surface);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  font-size: 0.95rem;
  line-height: 1.7;
}
.empty-state strong { color: var(--text); display: block; margin-bottom: 6px; }
.empty-state a { color: var(--accent); font-weight: 600; }
.empty-state a:hover { color: var(--code); }
.empty-state code {
  background: var(--code-bg);
  color: var(--code);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.88em;
}

/* ── Stats ── */
.stats { padding: 8px 0 72px; }
.stats-inner {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 24px;
}
.stat {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.stat strong {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 900;
  color: var(--accent);
  letter-spacing: -0.02em;
  line-height: 1;
}
.stat span {
  font-size: 0.82rem;
  color: var(--text-dim);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ── Categories ── */
.categories { padding: 8px 0 72px; }
.cat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 28px;
}
.cat-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 22px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: var(--text);
  transition: all .25s cubic-bezier(.22,1,.36,1);
}
.cat-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
  background: var(--surface-hover);
}
.cat-icon { font-size: 1.6rem; margin-bottom: 8px; line-height: 1; }
.cat-card strong { font-size: 1rem; font-weight: 700; color: var(--text); }
.cat-card small { font-size: 0.85rem; color: var(--text-dim); line-height: 1.55; }

/* ── Why ── */
.why { padding: 8px 0 72px; }
.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
  margin-top: 28px;
}
.why-card {
  padding: 28px 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all .25s cubic-bezier(.22,1,.36,1);
}
.why-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}
.why-icon { display: inline-block; font-size: 1.8rem; margin-bottom: 14px; line-height: 1; }
.why-card h3 { font-size: 1.05rem; font-weight: 700; color: var(--text); margin-bottom: 10px; }
.why-card p { font-size: 0.92rem; line-height: 1.65; color: var(--text-dim); }

/* ── How it works ── */
.how { padding: 8px 0 72px; }
.how-grid {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
  margin-top: 28px;
}
.how-step {
  padding: 28px 24px 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}
.how-num {
  display: inline-grid;
  place-items: center;
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--bg);
  font-weight: 900;
  font-size: 1rem;
  margin-bottom: 16px;
}
.how-step h3 { font-size: 1.05rem; font-weight: 700; color: var(--text); margin-bottom: 10px; }
.how-step p { font-size: 0.92rem; line-height: 1.65; color: var(--text-dim); }

/* ── FAQ ── */
.faq { padding: 8px 0 72px; }
.faq-list {
  max-width: 780px;
  margin: 28px auto 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color .2s;
}
.faq-item:hover { border-color: var(--border-strong); }
.faq-item[open] { border-color: var(--accent); }
.faq-item summary {
  padding: 18px 22px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--text);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  user-select: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  color: var(--accent);
  font-size: 1.4rem;
  line-height: 1;
  font-weight: 400;
  flex: none;
}
.faq-item[open] summary::after { content: "−"; color: var(--code); }
.faq-item p {
  padding: 0 22px 20px;
  color: var(--text-dim);
  line-height: 1.7;
  font-size: 0.94rem;
}
.faq-item p a { color: var(--accent); font-weight: 600; }
.faq-item p a:hover { color: var(--code); }

/* ── CTA ── */
.cta { padding: 8px 0 88px; }
.cta-inner {
  text-align: center;
  padding: 56px 24px;
  background:
    radial-gradient(circle at 50% 0%, var(--accent-glow), transparent 60%),
    var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-xl);
}
.cta-inner h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}
.cta-inner p {
  max-width: 560px;
  margin: 0 auto 28px;
  color: var(--text-dim);
  font-size: 1rem;
  line-height: 1.7;
}
.cta-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ── Responsive ── */
@media (max-width: 720px) {
  .hero { padding: 56px 0 64px; }
  .hero-title { font-size: clamp(2rem, 9vw, 2.8rem); }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { width: 100%; }
  .hero-bullets { gap: 16px; font-size: 0.85rem; }
  .section-head { margin-bottom: 24px; }
  .stats-inner { padding: 28px 16px; gap: 8px; }
  .stat strong { font-size: 1.8rem; }
  .stat span { font-size: 0.72rem; }
  .cta-inner { padding: 40px 20px; }
  .cta-actions { flex-direction: column; }
  .cta-actions .btn { width: 100%; }
  .how-grid, .why-grid, .cat-grid { grid-template-columns: 1fr; }
}