/* ================================================================
   BLOGSIGNAL — Home Page Styles
   ================================================================ */

/* ── Hero ── */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 0;
  position: relative;
  overflow: hidden;
  padding-top: 60px;
}

.hero-bg-grid {
  position: absolute; inset: 0; z-index: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 80px 80px;
}

.hero-glow {
  position: absolute;
  width: 700px; height: 700px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(200,255,0,0.06) 0%, transparent 65%);
  top: -200px; left: 50%; transform: translateX(-50%);
  filter: blur(60px);
  pointer-events: none;
}

.hero-content {
  position: relative; z-index: 1;
  padding: var(--sp-20) 0 var(--sp-16);
  max-width: 1160px; margin: 0 auto; width: 100%; padding-left: var(--sp-6); padding-right: var(--sp-6);
}

.hero-eyebrow {
  display: inline-flex; align-items: center; gap: var(--sp-2);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: var(--sp-5);
}
.hero-eyebrow-line { width: 24px; height: 1px; background: var(--lime); }

.hero-title-block { margin-bottom: var(--sp-6); }
.hero-title-main {
  font-family: var(--font-display);
  font-size: clamp(5.5rem, 14vw, 13rem);
  font-weight: 400;
  line-height: 0.9;
  letter-spacing: 0.01em;
  text-transform: uppercase;
  color: var(--text-1);
  display: block;
}
.hero-title-sub {
  display: flex; align-items: baseline; gap: var(--sp-4);
  margin-top: var(--sp-2);
}
.hero-title-italic {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 5vw, 5rem);
  font-style: italic;
  font-weight: 400;
  color: var(--text-3);
  line-height: 1;
  letter-spacing: -0.01em;
}
.hero-title-pill {
  background: var(--lime);
  color: #000;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: var(--r-full);
  align-self: center;
}

.hero-bottom {
  display: flex; align-items: flex-end; justify-content: space-between;
  flex-wrap: wrap; gap: var(--sp-6);
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(320px, 1.1fr) minmax(320px, 0.9fr);
  gap: var(--sp-12);
  align-items: center;
}
.hero-copy {
  max-width: 620px;
}
.hero-image-wrapper {
  display: flex;
  justify-content: flex-end;
}
.hero-image {
  width: 100%;
  height: auto;
  border-radius: 1.25rem;
  object-fit: cover;
  box-shadow: 0 48px 120px rgba(0,0,0,0.24);
  min-height: 420px;
}
.hero-desc {
  font-size: clamp(1rem, 1.5vw, 1.125rem);
  color: var(--text-2);
  line-height: 1.65;
  max-width: 400px;
}
.hero-meta {
  display: flex; align-items: center; gap: var(--sp-6);
  text-align: right;
}
.hero-stat { line-height: 1.2; }
.hero-stat-val {
  font-family: var(--font-display);
  font-size: 2.25rem;
  color: var(--lime);
  letter-spacing: 0.02em;
  display: block;
}
.hero-stat-lbl { font-size: 0.75rem; color: var(--text-3); font-family: var(--font-mono); letter-spacing: 0.05em; }

/* ── Hero Divider Line ── */
.hero-rule {
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--border-1) 15%, var(--border-2) 50%, var(--border-1) 85%, transparent 100%);
  position: relative; z-index: 1;
}

/* ── Featured Post Hero ── */
.featured-hero {
  position: relative;
  overflow: hidden;
  border-radius: var(--r-2xl);
  margin-bottom: var(--sp-5);
  cursor: pointer;
}
.featured-hero-img {
  width: 100%; height: 500px;
  object-fit: cover;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(145deg, var(--bg-3) 0%, var(--bg-4) 100%);
  font-size: 8rem;
  transition: transform var(--dur-slow) var(--ease-expo);
  border-radius: var(--r-2xl);
}
.featured-hero:hover .featured-hero-img { transform: scale(1.02); }
.featured-hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 30%, rgba(0,0,0,0.85) 100%);
  border-radius: var(--r-2xl);
}
.featured-hero-body {
  position: absolute; bottom: 0; left: 0; right: 0;
  padding: var(--sp-8);
}
.featured-hero-tags { display: flex; gap: var(--sp-2); margin-bottom: var(--sp-3); flex-wrap: wrap; }
.featured-hero-title {
  font-size: clamp(1.5rem, 3vw, 2.375rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.025em;
  margin-bottom: var(--sp-3);
  color: var(--text-1);
}
.featured-hero-meta {
  display: flex; align-items: center; gap: var(--sp-4);
  font-size: 0.8125rem; color: var(--zinc-400);
  font-family: var(--font-mono);
}

/* ── Post Card ── */
.post-card {
  background: var(--surface-1);
  border: 1px solid var(--border-1);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition:
    border-color var(--dur-base) var(--ease-expo),
    transform var(--dur-base) var(--ease-expo),
    box-shadow var(--dur-base) var(--ease-expo);
  position: relative;
  display: flex; flex-direction: column;
}
.post-card:hover {
  border-color: var(--border-2);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}
.post-card-img {
  height: 200px;
  overflow: hidden;
  position: relative;
  background: var(--bg-2);
}
.post-card-img-inner {
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
  font-size: 3.5rem;
  transition: transform var(--dur-slow) var(--ease-expo);
}
.post-card:hover .post-card-img-inner { transform: scale(1.06); }
.post-card-body { padding: var(--sp-5); flex: 1; display: flex; flex-direction: column; }
.post-card-cat {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--lime);
  margin-bottom: var(--sp-2);
}
.post-card-title {
  font-size: 1.0625rem;
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: -0.02em;
  margin-bottom: var(--sp-2);
  color: var(--text-1);
  transition: color var(--dur-fast);
  flex: 1;
}
.post-card:hover .post-card-title { color: var(--lime); }
.post-card-excerpt {
  font-size: 0.875rem;
  color: var(--text-3);
  line-height: 1.6;
  margin-bottom: var(--sp-4);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.post-card-footer {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: var(--sp-3);
  border-top: 1px solid var(--border-1);
  font-size: 0.8125rem; color: var(--text-4);
  font-family: var(--font-mono);
}
.post-card-arrow {
  color: var(--lime); font-size: 0.875rem;
  transition: transform var(--dur-fast);
}
.post-card:hover .post-card-arrow { transform: translateX(4px); }

/* ── Horizontal Post Card (sidebar) ── */
.post-row {
  display: flex; gap: var(--sp-4); align-items: flex-start;
  padding: var(--sp-4) 0;
  border-bottom: 1px solid var(--border-1);
  transition: opacity var(--dur-fast);
}
.post-row:last-child { border-bottom: none; }
.post-row:hover { opacity: 0.75; }
.post-row-num {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--text-4);
  line-height: 1;
  flex-shrink: 0;
  width: 36px;
  letter-spacing: 0.02em;
}
.post-row-body { flex: 1; }
.post-row-cat { font-family: var(--font-mono); font-size: 0.625rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--lime); margin-bottom: 4px; }
.post-row-title { font-size: 0.9375rem; font-weight: 600; line-height: 1.35; letter-spacing: -0.015em; color: var(--text-1); margin-bottom: 4px; }
.post-row-date  { font-size: 0.75rem; color: var(--text-4); font-family: var(--font-mono); }

/* ── Section Header ── */
.section-header {
  display: flex; align-items: baseline;
  justify-content: space-between;
  margin-bottom: var(--sp-8);
  flex-wrap: wrap; gap: var(--sp-4);
}
.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-4);
  margin-bottom: var(--sp-2);
}
.section-title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--text-1);
  line-height: 1.1;
}

/* ── Category Chips ── */
.category-chips {
  display: flex; flex-wrap: wrap; gap: var(--sp-2);
  margin-bottom: var(--sp-10);
}
.cat-chip {
  display: inline-flex; align-items: center; gap: var(--sp-2);
  padding: 6px 14px;
  border-radius: var(--r-full);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  background: var(--surface-1);
  border: 1px solid var(--border-1);
  color: var(--text-3);
  cursor: pointer;
  transition: all var(--dur-fast);
}
.cat-chip:hover { border-color: var(--border-2); color: var(--text-1); }
.cat-chip.active { background: var(--lime-dim); border-color: var(--border-lime); color: var(--lime); }
.cat-chip-count { font-size: 0.625rem; color: var(--text-4); }

/* ── Newsletter Banner ── */
.newsletter-banner {
  background: var(--bg-2);
  border: 1px solid var(--border-1);
  border-radius: var(--r-2xl);
  padding: var(--sp-12) var(--sp-10);
  position: relative;
  overflow: hidden;
  text-align: center;
}
.newsletter-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 80% at 50% -10%, rgba(200,255,0,0.07) 0%, transparent 70%);
}
.newsletter-banner-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: var(--sp-3);
  position: relative; z-index: 1;
}
.newsletter-banner-sub {
  font-size: 1rem; color: var(--text-2); line-height: 1.6;
  margin-bottom: var(--sp-6); max-width: 480px; margin-left: auto; margin-right: auto;
  position: relative; z-index: 1;
}
.newsletter-form {
  display: flex; gap: var(--sp-3); max-width: 420px; margin: 0 auto;
  position: relative; z-index: 1;
}
.newsletter-form .form-input { background: var(--bg-3); flex: 1; }

/* ── Trending Tags ── */
.trending-tags { display: flex; flex-wrap: wrap; gap: var(--sp-2); }

/* ── About Card ── */
.about-card {
  background: var(--surface-1);
  border: 1px solid var(--border-1);
  border-radius: var(--r-xl);
  padding: var(--sp-6);
  text-align: center;
}
.about-avatar {
  width: 72px; height: 72px; border-radius: 50%;
  background: linear-gradient(135deg, var(--lime), #a8e000);
  color: #000;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display);
  font-size: 1.75rem;
  margin: 0 auto var(--sp-4);
  border: 2px solid var(--border-lime);
}
.about-card h4 { font-size: 1.0625rem; font-weight: 600; margin-bottom: 4px; }
.about-card .role { font-size: 0.8125rem; color: var(--lime); font-family: var(--font-mono); margin-bottom: var(--sp-3); }
.about-card p { font-size: 0.875rem; color: var(--text-3); line-height: 1.6; }

/* ── Reading Progress Bar ── */
.reading-progress {
  position: fixed; top: 60px; left: 0; right: 0;
  height: 2px; background: transparent;
  z-index: calc(var(--z-nav) - 1);
}
.reading-progress-fill {
  height: 100%;
  background: var(--lime);
  width: 0%;
  transition: width 0.1s linear;
  box-shadow: 0 0 10px rgba(200,255,0,0.5);
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  .featured-hero-img { height: 400px; }
}
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .hero-image-wrapper {
    justify-content: center;
  }
}
@media (max-width: 768px) {
  .hero-title-main { font-size: clamp(4rem, 18vw, 7rem); }
  .hero-title-italic { font-size: clamp(1.75rem, 7vw, 3rem); }
  .hero-meta { text-align: left; }
  .featured-hero-img { height: 300px; font-size: 5rem; }
  .featured-hero-title { font-size: 1.375rem; }
  .newsletter-form { flex-direction: column; }
  .newsletter-banner { padding: var(--sp-8) var(--sp-5); }
}
@media (max-width: 480px) {
  .hero-bottom { flex-direction: column; }
  .hero-stat-val { font-size: 1.75rem; }
}