/* ============================================================
   SIQA Blog Styles  v4.0 — Modern SaaS Publication
   Matches landing page aesthetic: indigo accent, Inter font,
   glassmorphism nav, premium card elevation.
   ============================================================ */

/* ── 1. Blog tokens ── */
:root {
  --blog-accent:        #6366f1;
  --blog-accent-hover:  #818cf8;
  --blog-accent-muted:  rgba(99, 102, 241, 0.10);
  --blog-accent-glow:   rgba(99, 102, 241, 0.20);
  --blog-max-width:     1200px;
  --blog-body-width:    680px;
}

[data-theme="light"] {
  --blog-accent:        #4f46e5;
  --blog-accent-hover:  #4338ca;
  --blog-accent-muted:  rgba(79, 70, 229, 0.08);
  --blog-accent-glow:   rgba(79, 70, 229, 0.15);
}

/* ── 2. Reduced motion ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ============================================================
   PUBLIC NAVBAR
   ============================================================ */

.pub-nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 0 48px;
  height: 68px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  background: rgba(12,12,18,.50);
  backdrop-filter: blur(18px) saturate(180%);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  border-bottom: 1px solid rgba(255,255,255,.06);
  transition: height .3s cubic-bezier(.22,1,.36,1), background .3s, box-shadow .3s;
}
.pub-nav > .pub-nav-logo { justify-self: start; }
.pub-nav > .pub-nav-links { justify-self: center; }
.pub-nav > .pub-nav-actions { justify-self: end; }

.pub-nav.scrolled {
  height: 58px;
  background: rgba(12,12,18,.80);
  box-shadow: 0 4px 32px rgba(0,0,0,.4);
}

.pub-nav::after {
  content: '';
  position: absolute; bottom: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,.07) 50%, transparent 100%);
}

/* Logo */
.pub-nav-logo {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none; font-size: 20px; font-weight: 800;
  color: var(--text-1); letter-spacing: -.025em;
}
.pub-nav-logo-mark {
  width: 36px; height: 36px; border-radius: 10px;
  background: linear-gradient(135deg, #4f46e5, #818cf8);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 15px; font-weight: 800;
  box-shadow: 0 0 0 1px rgba(99,102,241,.4), 0 4px 16px rgba(99,102,241,.35);
  transition: transform .25s cubic-bezier(.34,1.56,.64,1), box-shadow .25s;
  flex-shrink: 0;
}
.pub-nav-logo:hover .pub-nav-logo-mark {
  transform: scale(1.08);
  box-shadow: 0 0 0 1px rgba(99,102,241,.6), 0 6px 24px rgba(99,102,241,.5);
}

/* Nav links */
.pub-nav-links {
  display: flex; align-items: center; gap: 4px; list-style: none;
  margin: 0; padding: 0;
}
.pub-nav-link {
  font-family: var(--font);
  font-size: 14px; font-weight: 500;
  color: var(--text-3);
  text-decoration: none;
  padding: 6px 14px; border-radius: 8px;
  transition: color .15s, background .15s;
}
.pub-nav-link:hover { color: var(--text-1); background: rgba(255,255,255,.055); }
.pub-nav-link.active { color: var(--text-1); background: var(--blog-accent-muted); }

/* NEW badge */
.pub-nav-badge {
  font-size: 9px; font-weight: 700; letter-spacing: .06em;
  padding: 2px 6px; border-radius: 4px;
  background: rgba(34,197,94,.15); color: #22c55e;
  border: 1px solid rgba(34,197,94,.25);
  vertical-align: middle; margin-left: 4px;
}

/* Actions */
.pub-nav-actions { display: flex; align-items: center; gap: 8px; }

.pub-nav-btn-ghost {
  height: 36px; padding: 0 16px; border-radius: 9px;
  font-family: var(--font);
  font-size: 13px; font-weight: 600; color: var(--text-2);
  background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.09);
  text-decoration: none; display: inline-flex; align-items: center; gap: 6px;
  transition: background .15s, color .15s, border-color .15s;
  cursor: pointer;
}
.pub-nav-btn-ghost:hover { background: rgba(255,255,255,.09); color: var(--text-1); border-color: rgba(255,255,255,.15); }

.pub-nav-btn-primary {
  height: 36px; padding: 0 18px; border-radius: 9px;
  font-family: var(--font);
  font-size: 13px; font-weight: 700; color: #fff;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  border: none; text-decoration: none;
  display: inline-flex; align-items: center; gap: 6px;
  transition: box-shadow .2s, transform .15s;
  box-shadow: 0 4px 16px rgba(99,102,241,.35);
  cursor: pointer; position: relative; overflow: hidden;
}
.pub-nav-btn-primary::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 50%; background: rgba(255,255,255,.12); pointer-events: none;
}
.pub-nav-btn-primary:hover { box-shadow: 0 6px 22px rgba(99,102,241,.55); transform: translateY(-1px); }

.pub-nav-theme-btn {
  width: 36px; height: 36px; border-radius: 9px;
  background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.09);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; color: var(--text-3);
  transition: background .15s, color .15s, transform .2s;
  padding: 0;
}
.pub-nav-theme-btn:hover { background: rgba(255,255,255,.09); color: var(--text-1); transform: rotate(20deg); }

/* Hamburger */
.pub-nav-hamburger {
  display: none; flex-direction: column; gap: 5px;
  width: 36px; height: 36px; border-radius: 9px;
  background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.09);
  align-items: center; justify-content: center;
  cursor: pointer; padding: 0;
}
.pub-nav-hamburger span {
  display: block; width: 16px; height: 1.5px;
  background: var(--text-3); border-radius: 2px;
  transition: transform .3s cubic-bezier(.22,1,.36,1), opacity .2s, width .2s;
}
.pub-nav-hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.pub-nav-hamburger.open span:nth-child(2) { opacity: 0; width: 0; }
.pub-nav-hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* Mobile menu */
.pub-mobile-menu {
  display: none; position: fixed;
  top: 68px; left: 0; right: 0; bottom: 0;
  background: rgba(10,10,16,.98);
  backdrop-filter: blur(32px);
  z-index: 99; padding: 32px 24px;
  flex-direction: column; gap: 8px;
  transform: translateY(-12px); opacity: 0;
  transition: opacity .25s, transform .25s cubic-bezier(.22,1,.36,1);
  pointer-events: none;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  min-height: calc(100vh - 68px);
}
.pub-nav.scrolled ~ .pub-mobile-menu {
  top: 58px;
  min-height: calc(100vh - 58px);
}
.pub-mobile-menu.open {
  display: flex; opacity: 1; transform: translateY(0);
  pointer-events: all;
}
.pub-mobile-menu a {
  font-family: var(--font);
  font-size: 18px; font-weight: 600;
  color: var(--text-2);
  text-decoration: none; padding: 14px 16px;
  border-radius: 12px; transition: background .15s, color .15s;
  border: 1px solid transparent;
}
.pub-mobile-menu a:hover { background: rgba(255,255,255,.05); color: var(--text-1); border-color: rgba(255,255,255,.08); }
.pub-mobile-menu-divider { height: 1px; background: rgba(255,255,255,.06); margin: 8px 0; }
.pub-mobile-menu-actions { display: flex; flex-direction: column; gap: 10px; margin-top: 8px; }
.pub-mobile-menu-actions a {
  text-align: center; height: 48px; border-radius: 12px;
  font-size: 15px; font-weight: 600; display: flex;
  align-items: center; justify-content: center;
}

@media (max-width: 768px) {
  .pub-nav { padding: 0 20px; }
  .pub-nav-links { display: none; }
  .pub-nav-hamburger { display: flex; }
  .pub-nav-btn-ghost { display: none; }
  .pub-nav-btn-primary { display: none; }
}

/* Light mode navbar */
[data-theme="light"] .pub-nav {
  background: rgba(255,255,255,.72);
  border-bottom-color: rgba(0,0,0,.06);
}
[data-theme="light"] .pub-nav.scrolled {
  background: rgba(255,255,255,.95);
  box-shadow: 0 4px 24px rgba(0,0,0,.06);
}
[data-theme="light"] .pub-nav::after {
  background: linear-gradient(90deg, transparent 0%, rgba(0,0,0,.05) 50%, transparent 100%);
}
[data-theme="light"] .pub-nav-link { color: var(--text-3); }
[data-theme="light"] .pub-nav-link:hover { background: rgba(0,0,0,.04); color: var(--text-1); }
[data-theme="light"] .pub-nav-link.active { background: var(--blog-accent-muted); color: var(--text-1); }
[data-theme="light"] .pub-nav-btn-ghost { background: rgba(0,0,0,.03); border-color: rgba(0,0,0,.08); color: var(--text-2); }
[data-theme="light"] .pub-nav-btn-ghost:hover { background: rgba(0,0,0,.06); color: var(--text-1); border-color: rgba(0,0,0,.12); }
[data-theme="light"] .pub-nav-theme-btn { background: rgba(0,0,0,.03); border-color: rgba(0,0,0,.08); color: var(--text-3); }
[data-theme="light"] .pub-nav-theme-btn:hover { background: rgba(0,0,0,.06); color: var(--text-1); }
[data-theme="light"] .pub-nav-hamburger { background: rgba(0,0,0,.03); border-color: rgba(0,0,0,.08); }
[data-theme="light"] .pub-mobile-menu { background: rgba(255,255,255,.98); }
[data-theme="light"] .pub-mobile-menu a { color: var(--text-2); }
[data-theme="light"] .pub-mobile-menu a:hover { background: rgba(0,0,0,.04); color: var(--text-1); border-color: rgba(0,0,0,.06); }
[data-theme="light"] .pub-mobile-menu-divider { background: rgba(0,0,0,.06); }

/* ============================================================
   LAYOUT
   ============================================================ */

.blog-public-main {
  max-width: var(--blog-max-width);
  margin: 0 auto;
  padding: 100px 24px 96px;
}
@media (min-width: 768px) {
  .blog-public-main { padding: 116px 32px 120px; }
}
@media (min-width: 1280px) {
  .blog-public-main { padding: 132px 48px 160px; }
}

/* Reading progress */
.reading-progress {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 2px; z-index: 999;
  background: linear-gradient(90deg, var(--blog-accent), #8b5cf6);
  transform-origin: left;
  transform: scaleX(0);
}

/* ============================================================
   BLOG INDEX — HEADER
   ============================================================ */

.blog-header {
  margin-bottom: var(--s12);
  position: relative;
}
.blog-header-eyebrow {
  font-family: var(--font);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blog-accent);
  margin: 0 0 var(--s3);
}
.blog-header-title {
  font-family: var(--font);
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--text-1);
  margin: 0 0 var(--s4);
  text-wrap: balance;
}
.blog-header-lead {
  font-family: var(--font);
  font-size: 17px;
  color: var(--text-2);
  max-width: 520px;
  line-height: 1.6;
  margin: 0;
  font-weight: 400;
}

/* ============================================================
   FEATURED POST
   ============================================================ */

.blog-featured {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  margin-bottom: var(--s12);
  position: relative;
  border-radius: var(--r4);
  overflow: hidden;
  background: linear-gradient(135deg, #16162e 0%, #0d0d18 100%);
  border: 1px solid rgba(255,255,255,0.08);
}
[data-theme="light"] .blog-featured {
  background: linear-gradient(135deg, #1e1e3a 0%, #131326 100%);
  border-color: rgba(99,102,241,0.12);
  box-shadow: 0 8px 32px rgba(99,102,241,0.08);
}

.blog-featured-media {
  position: relative;
  overflow: hidden;
  min-height: 400px;
}
.blog-featured-media-link {
  display: block; width: 100%; height: 100%;
}
.blog-featured-media img {
  width: 100%; height: 100%; object-fit: cover; display: block;
  transition: transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.blog-featured:hover .blog-featured-media img,
.blog-featured:focus-within .blog-featured-media img {
  transform: scale(1.04);
}
.blog-featured-media-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(12,12,18,0.92) 0%, rgba(12,12,18,0.70) 70%, rgba(12,12,18,0.40) 100%);
  pointer-events: none;
}

.blog-featured-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--s8) var(--s10);
  position: relative;
  z-index: 2;
  margin-left: -15%;
}
.blog-featured-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blog-accent);
  margin-bottom: var(--s4);
}
.blog-featured-label::before {
  content: '';
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--blog-accent);
  box-shadow: 0 0 10px var(--blog-accent-glow);
}
.blog-featured-title {
  font-family: var(--font);
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 700;
  line-height: 1.2;
  margin: 0 0 var(--s4);
  letter-spacing: -0.02em;
  text-wrap: balance;
}
.blog-featured-title a {
  color: #e8e8f0;
  text-decoration: none;
  transition: color 0.2s ease;
}
.blog-featured-title a:hover,
.blog-featured-title a:focus-visible {
  color: #fff;
}
.blog-featured-title a:focus-visible {
  outline: 2px solid var(--blog-accent);
  outline-offset: 4px;
  border-radius: 2px;
}
.blog-featured-meta {
  font-family: var(--font);
  font-size: 13px;
  color: #a0a0b8;
  margin-bottom: var(--s4);
  display: flex;
  align-items: center;
  gap: 8px;
}
.blog-featured-excerpt {
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.65;
  color: #a8a8bf;
  margin-bottom: var(--s6);
  max-width: 420px;
  font-weight: 400;
}
.blog-featured-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 44px;
  padding: 0 24px;
  border-radius: var(--r2);
  font-family: var(--font);
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: var(--blog-accent);
  text-decoration: none;
  transition: background 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
  align-self: flex-start;
}
.blog-featured-cta:hover {
  background: var(--blog-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.25);
}
.blog-featured-cta:focus-visible {
  outline: 3px solid var(--blog-accent);
  outline-offset: 3px;
}
.blog-featured-cta:active {
  transform: translateY(0);
}

@media (max-width: 900px) {
  .blog-featured {
    grid-template-columns: 1fr;
  }
  .blog-featured-media {
    min-height: 260px;
    aspect-ratio: 16/9;
  }
  .blog-featured-media-overlay {
    background: linear-gradient(0deg, rgba(12,12,18,0.95) 0%, rgba(12,12,18,0.60) 60%, rgba(12,12,18,0.30) 100%);
  }
  .blog-featured-content {
    margin-left: 0;
    padding: var(--s6);
    margin-top: -60px;
  }
}

/* ============================================================
   POST GRID
   ============================================================ */

.blog-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  grid-auto-rows: auto;
  gap: var(--s5);
  margin-bottom: var(--s12);
}

/* First row layout: large card + 2 compact stacked */
.blog-card-large {
  grid-column: 1 / 2;
  grid-row: 1 / 3;
}
.blog-card-large ~ .blog-card-compact:nth-of-type(2) {
  grid-column: 2 / 4;
  grid-row: 1 / 2;
}
.blog-card-large ~ .blog-card-compact:nth-of-type(3) {
  grid-column: 2 / 4;
  grid-row: 2 / 3;
}

/* Fallback for < 3 posts after featured: standard 2-col flow */
.blog-grid-fallback .blog-card-large {
  grid-column: auto;
  grid-row: auto;
}
.blog-grid-fallback .blog-card-large ~ .blog-card-compact:nth-of-type(2) {
  grid-column: auto;
  grid-row: auto;
}

/* Strip card spans full width */
.blog-card-strip {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--s5);
  align-items: center;
}
.blog-card-strip .blog-card-cover-wide {
  aspect-ratio: 16/10;
  height: 100%;
  border-radius: var(--r3);
}
.blog-card-strip .blog-card-cover-wide img {
  border-radius: var(--r3);
}

/* Standard cards */
.blog-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--r4);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.2s ease;
}
[data-theme="light"] .blog-card {
  box-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.03);
}
.blog-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-md);
}
.blog-card:focus-within {
  border-color: var(--blog-accent);
  box-shadow: 0 0 0 3px var(--blog-accent-muted), var(--shadow-md);
}
.blog-card-cover {
  aspect-ratio: 16/10;
  overflow: hidden;
  background: var(--bg-raised);
  position: relative;
}
.blog-card-cover img {
  width: 100%; height: 100%; object-fit: cover; display: block;
  transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.blog-card:hover .blog-card-cover img,
.blog-card:focus-within .blog-card-cover img {
  transform: scale(1.05);
}
.blog-card-body {
  padding: var(--s5);
  display: flex;
  flex-direction: column;
  flex: 1;
}
.blog-card-meta {
  font-family: var(--font);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-3);
  margin-bottom: var(--s2);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.blog-card h3 {
  font-family: var(--font);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.35;
  margin: 0 0 var(--s2);
  letter-spacing: -0.01em;
  text-wrap: balance;
}
.blog-card h3 a {
  color: var(--text-1);
  text-decoration: none;
  transition: color 0.2s ease;
}
.blog-card h3 a:hover,
.blog-card h3 a:focus-visible {
  color: var(--blog-accent-hover);
}
.blog-card h3 a:focus-visible {
  outline: 2px solid var(--blog-accent);
  outline-offset: 3px;
  border-radius: 2px;
}
.blog-card-excerpt {
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.55;
  color: var(--text-2);
  margin-bottom: var(--s4);
  flex: 1;
  font-weight: 400;
}
.blog-card-footer {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font);
  font-size: 12px;
  color: var(--text-3);
  font-weight: 500;
  margin-top: auto;
  padding-top: var(--s3);
  border-top: 1px solid var(--border-faint);
}
.blog-card-footer img,
.blog-card-footer .avatar-placeholder {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}
.avatar-placeholder-sm {
  width: 24px;
  height: 24px;
  font-size: 10px;
}
.blog-card-footer .avatar-placeholder {
  background: linear-gradient(135deg, var(--blog-accent), #4f46e5);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  color: #fff;
}

/* Compact cards */
.blog-card-compact {
  justify-content: center;
}
.blog-card-compact-border {
  border-top: 2px solid var(--blog-accent);
}
.blog-card-compact .blog-card-body {
  padding: var(--s5);
}
.blog-card-compact h3 {
  font-size: 15px;
}
.blog-card-compact .blog-card-excerpt {
  font-size: 13px;
  line-height: 1.5;
}

/* Large card overrides */
.blog-card-large .blog-card-body {
  padding: var(--s6);
}
.blog-card-large h3 {
  font-size: 21px;
  line-height: 1.25;
}
.blog-card-large .blog-card-excerpt {
  font-size: 15px;
  line-height: 1.6;
}

/* Responsive grid */
@media (max-width: 980px) {
  .blog-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--s4);
  }
  .blog-card-large {
    grid-column: 1 / -1;
    grid-row: auto;
  }
  .blog-card-large ~ .blog-card-compact:nth-of-type(2) {
    grid-column: auto;
    grid-row: auto;
  }
  .blog-card-large ~ .blog-card-compact:nth-of-type(3) {
    grid-column: auto;
    grid-row: auto;
  }
  .blog-card-strip {
    grid-column: 1 / -1;
    grid-template-columns: 200px 1fr;
  }
}
@media (max-width: 640px) {
  .blog-grid {
    grid-template-columns: 1fr;
    gap: var(--s4);
  }
  .blog-card-strip {
    grid-template-columns: 1fr;
  }
  .blog-card-strip .blog-card-cover-wide {
    aspect-ratio: 16/9;
    height: auto;
  }
  .blog-card-large h3 {
    font-size: 19px;
  }
}

/* ============================================================
   PAGINATION
   ============================================================ */

.blog-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: var(--s12);
  flex-wrap: wrap;
}
.blog-pagination a,
.blog-pagination span {
  min-width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--r2);
  font-family: var(--font);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.2s ease;
}
.blog-pagination a {
  color: var(--text-2);
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
}
.blog-pagination a:hover {
  background: var(--blog-accent-muted);
  color: var(--blog-accent);
  border-color: var(--blog-accent-glow);
  transform: translateY(-1px);
}
.blog-pagination a:focus-visible {
  outline: 2px solid var(--blog-accent);
  outline-offset: 2px;
}
.blog-pagination span.current {
  background: var(--blog-accent);
  color: #fff;
  font-weight: 700;
  border: 1px solid var(--blog-accent);
}
.blog-pagination span.ellipsis {
  color: var(--text-3);
  border: none;
  background: none;
  min-width: 32px;
}
.blog-pagination-arrow {
  padding: 0 12px;
}

/* ============================================================
   NEWSLETTER CTA
   ============================================================ */

.blog-newsletter {
  margin-top: var(--s16);
  position: relative;
  overflow: hidden;
  border-top: 1px solid var(--border-default);
  border-bottom: 1px solid var(--border-default);
  padding: var(--s12) var(--s6);
}
.blog-newsletter::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 20% 50%, rgba(99, 102, 241, 0.05), transparent 70%),
    radial-gradient(ellipse 60% 40% at 80% 80%, rgba(99, 102, 241, 0.03), transparent 60%);
  pointer-events: none;
}
.blog-newsletter-inner {
  position: relative;
  max-width: 560px;
  margin: 0 auto;
  text-align: center;
}
.blog-newsletter-eyebrow {
  font-family: var(--font);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blog-accent);
  margin: 0 0 var(--s3);
}
.blog-newsletter h3 {
  font-family: var(--font);
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  line-height: 1.2;
  margin: 0 0 var(--s3);
  letter-spacing: -0.02em;
  text-wrap: balance;
}
.blog-newsletter p {
  font-family: var(--font);
  font-size: 16px;
  color: var(--text-2);
  margin: 0 0 var(--s6);
  font-weight: 400;
}
.blog-newsletter-form {
  display: flex;
  gap: var(--s2);
  max-width: 440px;
  margin: 0 auto;
}
@media (max-width: 480px) {
  .blog-newsletter-form { flex-direction: column; }
}
.blog-newsletter-form input {
  flex: 1;
  height: 48px;
  padding: 0 var(--s4);
  border-radius: var(--r3);
  border: 1px solid var(--border-default);
  background: var(--bg-surface);
  color: var(--text-1);
  font-family: var(--font);
  font-size: 15px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.blog-newsletter-form input:focus {
  border-color: var(--blog-accent);
  box-shadow: 0 0 0 3px var(--blog-accent-muted);
}
.blog-newsletter-form button {
  height: 48px;
  padding: 0 var(--s5);
  border-radius: var(--r3);
  font-family: var(--font);
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  background: var(--blog-accent);
  border: none;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
}
.blog-newsletter-form button:hover {
  background: var(--blog-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.20);
}
.blog-newsletter-form button:focus-visible {
  outline: 2px solid var(--blog-accent);
  outline-offset: 3px;
}
.blog-newsletter-form button:active {
  transform: translateY(0);
}

/* ── Empty state ── */
.blog-empty {
  text-align: center;
  padding: var(--s16) var(--s6);
  color: var(--text-2);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
}
.blog-empty a {
  color: var(--blog-accent);
  text-decoration: none;
  border-bottom: 1px solid var(--blog-accent-glow);
  transition: border-color 0.2s;
}
.blog-empty a:hover,
.blog-empty a:focus-visible {
  border-bottom-color: var(--blog-accent);
}

/* ============================================================
   BLOG DETAIL
   ============================================================ */

/* ── Breadcrumb ── */
.blog-breadcrumb {
  font-family: var(--font);
  font-size: 12px;
  color: var(--text-3);
  margin-bottom: var(--s6);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.blog-breadcrumb a {
  color: var(--text-3);
  text-decoration: none;
  transition: color 0.2s ease;
  border-radius: 3px;
  padding: 2px 4px;
  margin: -2px -4px;
}
.blog-breadcrumb a:hover,
.blog-breadcrumb a:focus-visible {
  color: var(--text-1);
}
.blog-breadcrumb a:focus-visible {
  outline: 2px solid var(--blog-accent);
  outline-offset: 2px;
}
.blog-breadcrumb .sep {
  color: var(--text-4);
  user-select: none;
}
.blog-breadcrumb .current {
  color: var(--text-3);
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ── Article hero ── */
.article-hero {
  position: relative;
  margin-bottom: var(--s10);
  border-radius: var(--r4);
  overflow: hidden;
  min-height: 420px;
  display: flex;
  align-items: flex-end;
}
.article-hero-noimage {
  min-height: auto;
  background: transparent;
  display: block;
  margin-bottom: var(--s8);
}
.article-hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.article-hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.article-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(12,12,18,0.92) 0%, rgba(12,12,18,0.5) 45%, rgba(12,12,18,0.15) 100%);
  pointer-events: none;
}
.article-hero .article-hero-title,
.article-hero .article-hero-meta,
.article-hero .article-hero-byline {
  color: #e8e8f0;
}
.article-hero-noimage .article-hero-title,
.article-hero-noimage .article-hero-meta,
.article-hero-noimage .article-hero-byline {
  color: var(--text-1);
}
.article-hero-content {
  position: relative;
  z-index: 2;
  padding: var(--s8) var(--s8) var(--s6);
  max-width: 800px;
}
.article-hero-meta {
  font-family: var(--font);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--blog-accent);
  margin-bottom: var(--s3);
  display: flex;
  align-items: center;
  gap: 10px;
}
.article-hero-title {
  font-family: var(--font);
  font-size: clamp(30px, 4.5vw, 48px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin: 0 0 var(--s4);
  text-wrap: balance;
}
.article-hero-byline {
  opacity: 0.85;
}

/* No-image hero variant */
.article-hero-noimage .article-hero-content {
  padding: 0;
}

@media (max-width: 768px) {
  .article-hero {
    min-height: 340px;
    border-radius: var(--r3);
  }
  .article-hero-content {
    padding: var(--s6) var(--s4) var(--s4);
  }
}

/* ── Detail layout ── */
.blog-detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 64px;
  align-items: start;
}
.blog-detail-main {
  position: relative;
  min-width: 0;
}
@media (max-width: 1024px) {
  .blog-detail-layout { grid-template-columns: 1fr; }
  .blog-sidebar { display: none; }
}

/* ── Share sidebar ── */
.share-sidebar {
  position: absolute;
  left: -64px;
  top: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 10;
}
.share-sidebar .share-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-raised);
  color: var(--text-3);
  border: 1px solid var(--border-default);
  text-decoration: none;
  transition: all 0.2s ease;
  cursor: pointer;
}
.share-sidebar .share-btn:hover {
  background: var(--blog-accent-muted);
  color: var(--blog-accent);
  border-color: var(--blog-accent-glow);
  transform: translateY(-2px);
}
.share-sidebar .share-btn:focus-visible {
  outline: 2px solid var(--blog-accent);
  outline-offset: 2px;
}
.share-sidebar .share-btn.copied {
  background: var(--green-muted);
  color: var(--green);
  border-color: rgba(34, 197, 94, 0.3);
}
@media (max-width: 1080px) {
  .share-sidebar { display: none; }
}

/* Mobile share bar */
.share-bar-mobile {
  display: none;
  align-items: center;
  gap: 10px;
  margin: var(--s8) 0;
  padding: var(--s4) 0;
  border-top: 1px solid var(--border-faint);
  border-bottom: 1px solid var(--border-faint);
  flex-wrap: wrap;
}
.share-bar-mobile .share-label {
  font-family: var(--font);
  font-size: 11px;
  font-weight: 700;
  color: var(--text-3);
  margin-right: 4px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.share-bar-mobile .share-btn {
  width: 44px;
  height: 44px;
  border-radius: var(--r2);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-surface);
  color: var(--text-2);
  border: 1px solid var(--border-default);
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  transition: all 0.2s ease;
  cursor: pointer;
}
.share-bar-mobile .share-btn:hover {
  background: var(--blog-accent-muted);
  color: var(--blog-accent);
  border-color: var(--blog-accent-glow);
  transform: translateY(-2px);
}
.share-bar-mobile .share-btn:focus-visible {
  outline: 2px solid var(--blog-accent);
  outline-offset: 2px;
}
.share-bar-mobile .share-btn:active {
  transform: translateY(0);
}
.share-bar-mobile .share-btn.copied {
  background: var(--green-muted);
  color: var(--green);
  border-color: rgba(34, 197, 94, 0.3);
}
@media (max-width: 1080px) {
  .share-bar-mobile { display: flex; }
}

/* ── Post body ── */
.post-body {
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.7;
  color: var(--text-2);
  max-width: var(--blog-body-width);
  text-wrap: pretty;
}
.post-body > * + * { margin-top: 1.5em; }

/* Lead paragraph */
.post-body > p:first-of-type {
  font-size: 19px;
  line-height: 1.6;
  color: var(--text-1);
  font-weight: 400;
  margin-bottom: var(--s6);
}

.post-body h2 {
  font-family: var(--font);
  font-size: clamp(24px, 2.8vw, 30px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-1);
  margin-top: 2.2em;
  letter-spacing: -0.02em;
  scroll-margin-top: 100px;
  text-wrap: balance;
}
.post-body h3 {
  font-family: var(--font);
  font-size: clamp(20px, 2.2vw, 24px);
  font-weight: 600;
  line-height: 1.25;
  color: var(--text-1);
  margin-top: 1.9em;
  letter-spacing: -0.01em;
  scroll-margin-top: 100px;
  text-wrap: balance;
}
.post-body h4 {
  font-family: var(--font);
  font-size: 18px;
  font-weight: 600;
  color: var(--text-1);
  margin-top: 1.7em;
  line-height: 1.35;
}

.post-body p { margin: 0; }
.post-body p + p { margin-top: 1.15em; }

.post-body strong { color: var(--text-1); font-weight: 600; }
.post-body em { font-style: italic; }

.post-body a {
  color: var(--blog-accent);
  text-decoration: none;
  border-bottom: 1px solid var(--blog-accent-glow);
  transition: border-color 0.2s, color 0.2s;
  border-radius: 1px;
}
.post-body a:hover {
  border-bottom-color: var(--blog-accent);
  color: var(--blog-accent-hover);
}
.post-body a:focus-visible {
  outline: 2px solid var(--blog-accent);
  outline-offset: 3px;
  border-bottom-color: transparent;
}

/* Lists */
.post-body ul, .post-body ol {
  padding-left: 1.5em;
  margin: 0;
}
.post-body li { margin: 0.5em 0; }
.post-body ul li::marker { color: var(--blog-accent); }
.post-body ol li::marker { color: var(--text-3); font-weight: 600; }

/* Blockquotes */
.post-body blockquote {
  margin: 2em 0;
  padding: var(--s5) var(--s6);
  border-left: 3px solid var(--blog-accent);
  background: var(--bg-raised);
  border-radius: 0 var(--r3) var(--r3) 0;
  color: var(--text-1);
  font-size: 17px;
  line-height: 1.65;
}
.post-body blockquote p {
  margin: 0;
}
.post-body blockquote p + p { margin-top: 0.8em; }

@media (min-width: 1024px) {
  .post-body blockquote {
    margin-left: calc(var(--s6) * -1);
    margin-right: calc(var(--s6) * -1);
    padding: var(--s5) var(--s8);
    font-size: 18px;
  }
}

/* Tables */
.post-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.6em 0;
  font-size: 15px;
  border: 1px solid var(--border-default);
  border-radius: var(--r3);
  overflow: hidden;
  display: block;
  overflow-x: auto;
  white-space: nowrap;
}
.post-body thead {
  background: var(--bg-overlay);
}
.post-body th {
  text-align: left;
  padding: 14px 18px;
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
  border-bottom: 1px solid var(--border-default);
  font-family: var(--font);
}
.post-body td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-faint);
  color: var(--text-2);
  vertical-align: top;
  white-space: normal;
}
.post-body tr:last-child td { border-bottom: none; }
.post-body tr:hover td { background: rgba(255,255,255,0.02); }
[data-theme="light"] .post-body tr:hover td { background: rgba(0,0,0,0.025); }
.post-body td strong, .post-body th strong { color: var(--text-1); }
@media (max-width: 600px) {
  .post-body table { font-size: 13px; }
  .post-body th, .post-body td { padding: 10px 12px; }
}

/* Code */
.post-body code {
  font-family: var(--font-mono);
  font-size: 0.82em;
  padding: 2px 7px;
  border-radius: 5px;
  background: rgba(255,255,255,0.06);
  color: #818cf8;
  border: 1px solid rgba(255,255,255,0.06);
  word-break: break-word;
}
[data-theme="light"] .post-body code {
  background: rgba(0,0,0,0.05);
  color: #4f46e5;
  border-color: rgba(0,0,0,0.06);
}
.post-body pre {
  background: var(--bg-overlay);
  border: 1px solid var(--border-default);
  border-radius: var(--r3);
  padding: var(--s4) var(--s5);
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.6;
  margin: 1.6em 0;
  scrollbar-width: thin;
  scrollbar-color: var(--border-default) transparent;
}
.post-body pre code {
  background: none;
  border: none;
  padding: 0;
  color: var(--text-2);
  font-size: inherit;
  word-break: normal;
}

/* Horizontal rule */
.post-body hr {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-default), transparent);
  margin: 2.8em 0;
}

/* Images & figures */
.post-body img {
  max-width: 100%;
  border-radius: var(--r3);
  margin: 1.4em 0;
  border: 1px solid var(--border-faint);
  display: block;
}
@media (min-width: 1024px) {
  .post-body img {
    margin-left: calc(var(--s6) * -1);
    margin-right: calc(var(--s6) * -1);
    max-width: calc(100% + var(--s12));
    width: calc(100% + var(--s12));
  }
}
.post-body figure { margin: 1.6em 0; }
.post-body figcaption {
  font-family: var(--font);
  font-size: 13px;
  color: var(--text-3);
  text-align: center;
  margin-top: 8px;
}

/* Callout boxes */
.post-body .callout {
  background: var(--bg-raised);
  border: 1px solid var(--border-default);
  border-radius: var(--r3);
  padding: var(--s5);
  margin: 1.6em 0;
}
.post-body .callout-title {
  font-family: var(--font);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--blog-accent);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ── Feedback widget ── */
.blog-feedback {
  margin-top: var(--s10);
  text-align: center;
  padding: var(--s6);
  border-radius: var(--r3);
  background: var(--bg-raised);
  border: 1px solid var(--border-default);
  max-width: var(--blog-body-width);
}
.blog-feedback p {
  font-family: var(--font);
  font-size: 16px;
  color: var(--text-2);
  margin: 0 0 var(--s3);
  font-weight: 400;
}
.blog-feedback-btns {
  display: inline-flex;
  gap: 10px;
}
.feedback-btn {
  height: 44px;
  padding: 0 var(--s5);
  border-radius: var(--r2);
  font-family: var(--font);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--border-default);
  background: var(--bg-surface);
  color: var(--text-2);
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.feedback-btn:hover { background: var(--glass-bg-md); color: var(--text-1); }
.feedback-btn:focus-visible {
  outline: 2px solid var(--blog-accent);
  outline-offset: 2px;
}
.feedback-btn.yes:hover {
  background: var(--green-muted);
  color: var(--green);
  border-color: rgba(34, 197, 94, 0.3);
}
.feedback-btn.no:hover {
  background: var(--red-muted);
  color: var(--red);
  border-color: rgba(239, 68, 68, 0.3);
}
.feedback-btn:active {
  transform: scale(0.97);
}

/* ── Author section ── */
.blog-author-section {
  margin-top: var(--s12);
  padding-top: var(--s8);
  border-top: 1px solid var(--border-default);
  max-width: var(--blog-body-width);
}
.blog-author-card {
  display: flex;
  gap: var(--s5);
  align-items: flex-start;
  padding: var(--s5) 0;
}
.blog-author-card img,
.blog-author-card .author-avatar-placeholder {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}
.blog-author-card .author-avatar-placeholder {
  background: linear-gradient(135deg, var(--blog-accent), #4f46e5);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 700;
  color: #fff;
}
.blog-author-info {
  flex: 1;
  min-width: 0;
}
.blog-author-info .author-label {
  font-family: var(--font);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
  margin: 0 0 4px;
}
.blog-author-info h3 {
  font-family: var(--font);
  font-size: 20px;
  font-weight: 600;
  margin: 0 0 4px;
  color: var(--text-1);
  letter-spacing: -0.01em;
}
.blog-author-info .credentials {
  font-family: var(--font);
  font-size: 13px;
  color: var(--text-3);
  margin-bottom: 10px;
  font-weight: 500;
}
.blog-author-info .bio {
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-2);
  margin: 0;
  font-weight: 400;
}

/* ── Related posts ── */
.blog-related {
  margin-top: var(--s12);
}
.blog-related-eyebrow {
  font-family: var(--font);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blog-accent);
  margin: 0 0 var(--s2);
}
.blog-related-title {
  font-family: var(--font);
  font-size: clamp(22px, 2.5vw, 28px);
  font-weight: 700;
  margin: 0 0 var(--s5);
  letter-spacing: -0.02em;
  color: var(--text-1);
}
.blog-related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s4);
}
@media (max-width: 768px) {
  .blog-related-grid {
    grid-template-columns: 1fr;
    gap: var(--s4);
  }
}
.blog-related-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--r3);
  text-decoration: none;
  color: inherit;
  transition: transform 0.3s ease, border-color 0.2s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
[data-theme="light"] .blog-related-card {
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}
.blog-related-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-md);
}
.blog-related-card:focus-visible {
  outline: 2px solid var(--blog-accent);
  outline-offset: 3px;
  border-color: var(--blog-accent);
}
.blog-related-card-media {
  aspect-ratio: 16/10;
  overflow: hidden;
  background: var(--bg-raised);
}
.blog-related-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.blog-related-card:hover .blog-related-card-media img {
  transform: scale(1.05);
}
.blog-related-card-body {
  padding: var(--s4) var(--s5) var(--s5);
  display: flex;
  flex-direction: column;
  flex: 1;
}
.blog-related-card .date {
  font-family: var(--font);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-3);
  margin-bottom: var(--s2);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.blog-related-card h4 {
  font-family: var(--font);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.35;
  margin: 0;
  color: var(--text-1);
  transition: color 0.2s;
  text-wrap: balance;
}
.blog-related-card:hover h4 {
  color: var(--blog-accent-hover);
}

/* ── Sidebar TOC ── */
.blog-sidebar {
  position: relative;
}
.blog-toc {
  position: sticky;
  top: 100px;
  padding: var(--s4) 0;
  max-height: calc(100vh - 140px);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border-default) transparent;
}
.blog-toc::-webkit-scrollbar {
  width: 4px;
}
.blog-toc::-webkit-scrollbar-thumb {
  background: var(--border-default);
  border-radius: 999px;
}
.blog-toc h4 {
  font-family: var(--font);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
  margin: 0 0 var(--s4);
  padding-bottom: var(--s3);
  border-bottom: 1px solid var(--border-faint);
}
.blog-toc ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.blog-toc a {
  display: block;
  padding: 8px 12px;
  border-radius: var(--r2);
  font-family: var(--font);
  font-size: 13px;
  color: var(--text-2);
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  border-left: 2px solid transparent;
  line-height: 1.4;
}
.blog-toc a:hover {
  background: var(--blog-accent-muted);
  color: var(--blog-accent);
  border-left-color: var(--blog-accent-glow);
}
.blog-toc a:focus-visible {
  outline: 2px solid var(--blog-accent);
  outline-offset: 0;
  border-radius: var(--r2);
}
.blog-toc a.active {
  background: var(--blog-accent-muted);
  color: var(--blog-accent);
  border-left-color: var(--blog-accent);
  font-weight: 600;
}
.blog-toc a.toc-h3 {
  padding-left: 20px;
  font-size: 12px;
}

/* ── Byline ── */
.byline {
  display: flex;
  align-items: center;
  gap: 12px;
}
.byline-extended {
  flex-direction: column;
  align-items: flex-start;
  gap: var(--s4);
}
.byline-avatar, .byline-avatar-placeholder {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}
.byline-avatar-lg, .byline-avatar-placeholder.byline-avatar-lg {
  width: 80px;
  height: 80px;
}
.byline-avatar-placeholder {
  background: linear-gradient(135deg, var(--blog-accent), #4f46e5);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 700;
  color: #fff;
}
.byline-avatar-placeholder.byline-avatar-lg { font-size: 28px; }
.byline-name {
  margin: 0;
  font-family: var(--font);
  font-size: 14px;
  font-weight: 600;
}
.byline-name a {
  color: inherit;
  text-decoration: none;
  border-radius: 2px;
  transition: color 0.2s;
  padding: 1px 3px;
  margin: -1px -3px;
}
.byline-name a:hover { color: var(--blog-accent); }
.byline-name a:focus-visible {
  outline: 2px solid var(--blog-accent);
  outline-offset: 2px;
}
.byline-credentials {
  margin: 2px 0 0;
  font-family: var(--font);
  font-size: 12px;
  color: var(--text-3);
}
.byline-meta {
  margin: 2px 0 0;
  font-family: var(--font);
  font-size: 12px;
  color: var(--text-3);
}
.byline-bio {
  margin: 12px 0 0;
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.65;
  max-width: 640px;
  color: var(--text-2);
  font-weight: 400;
}

/* ── Utility ── */
.hide-mobile {
  display: inline;
}
@media (max-width: 640px) {
  .hide-mobile { display: none; }
}

/* ============================================================
   AUTHOR ARCHIVE
   ============================================================ */

.author-hero {
  margin-bottom: var(--s10);
  padding-top: var(--s6);
}
.author-hero-card {
  display: flex;
  gap: var(--s6);
  align-items: flex-start;
  padding: var(--s6);
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--r4);
}
.author-hero-avatar {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}
.author-hero-info {
  flex: 1;
  min-width: 0;
}
.author-hero-name {
  font-family: var(--font);
  font-size: clamp(26px, 3vw, 32px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--text-1);
  margin: 0 0 var(--s2);
  text-wrap: balance;
}
.author-hero-job {
  font-family: var(--font);
  font-size: 17px;
  color: var(--text-2);
  margin: 0 0 4px;
  font-weight: 500;
}
.author-hero-credentials {
  font-family: var(--font);
  font-size: 13px;
  color: var(--text-3);
  margin: 0 0 var(--s3);
  font-weight: 500;
}
.author-hero-bio {
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.65;
  color: var(--text-2);
  margin: 0 0 var(--s3);
  max-width: 640px;
  font-weight: 400;
}
.author-hero-social {
  display: flex;
  gap: 10px;
}
.author-hero-social a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-raised);
  color: var(--text-3);
  border: 1px solid var(--border-default);
  text-decoration: none;
  transition: all 0.2s ease;
}
.author-hero-social a:hover {
  background: var(--blog-accent-muted);
  color: var(--blog-accent);
  border-color: var(--blog-accent-glow);
  transform: translateY(-2px);
}
.author-hero-social a:focus-visible {
  outline: 2px solid var(--blog-accent);
  outline-offset: 2px;
}

.author-posts-heading {
  font-family: var(--font);
  font-size: clamp(20px, 2.2vw, 24px);
  font-weight: 700;
  color: var(--text-1);
  margin: 0 0 var(--s6);
  letter-spacing: -0.01em;
}

.author-posts-grid {
  grid-template-columns: repeat(3, 1fr);
}
@media (max-width: 980px) {
  .author-posts-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .author-hero-card { flex-direction: column; align-items: center; text-align: center; }
  .author-hero-social { justify-content: center; }
  .author-posts-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   SKIP LINK
   ============================================================ */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--blog-accent);
  color: #fff;
  padding: 8px 16px;
  z-index: 1000;
  font-family: var(--font);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  border-radius: 0 0 var(--r2) 0;
  transition: top 0.2s;
}
.skip-link:focus {
  top: 0;
  outline: 2px solid #fff;
  outline-offset: -2px;
}

/* ============================================================
   SEARCH BAR
   ============================================================ */
.blog-search {
  margin-bottom: var(--s8);
}
.blog-search-form {
  display: flex;
  gap: var(--s2);
  max-width: 520px;
}
.blog-search-form input {
  flex: 1;
  height: 48px;
  padding: 0 var(--s4);
  border-radius: var(--r3);
  border: 1px solid var(--border-default);
  background: var(--bg-surface);
  color: var(--text-1);
  font-family: var(--font);
  font-size: 15px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.blog-search-form input:focus {
  border-color: var(--blog-accent);
  box-shadow: 0 0 0 3px var(--blog-accent-muted);
}
.blog-search-form button {
  height: 48px;
  padding: 0 var(--s5);
  border-radius: var(--r3);
  font-family: var(--font);
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  background: var(--blog-accent);
  border: none;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.2s, transform 0.15s;
}
.blog-search-form button:hover {
  background: var(--blog-accent-hover);
  transform: translateY(-1px);
}
.blog-search-form button:focus-visible {
  outline: 2px solid var(--blog-accent);
  outline-offset: 3px;
}
.blog-search-meta {
  font-family: var(--font);
  font-size: 14px;
  color: var(--text-3);
  margin-top: var(--s3);
}

/* ============================================================
   PREV / NEXT NAVIGATION
   ============================================================ */
.blog-post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s4);
  margin-top: var(--s10);
  padding-top: var(--s8);
  border-top: 1px solid var(--border-default);
  max-width: var(--blog-body-width);
}
.blog-post-nav a {
  text-decoration: none;
  color: inherit;
  padding: var(--s4);
  border-radius: var(--r3);
  border: 1px solid var(--border-default);
  background: var(--bg-surface);
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}
.blog-post-nav a:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}
.blog-post-nav a:focus-visible {
  outline: 2px solid var(--blog-accent);
  outline-offset: 2px;
}
.blog-post-nav-label {
  font-family: var(--font);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: var(--s2);
  display: flex;
  align-items: center;
  gap: 6px;
}
.blog-post-nav-title {
  font-family: var(--font);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--text-1);
  text-wrap: balance;
}
.blog-post-nav-next { text-align: right; }
.blog-post-nav-next .blog-post-nav-label { justify-content: flex-end; }
@media (max-width: 640px) {
  .blog-post-nav { grid-template-columns: 1fr; }
  .blog-post-nav-next { text-align: left; }
  .blog-post-nav-next .blog-post-nav-label { justify-content: flex-start; }
}

/* ============================================================
   MOBILE TOC
   ============================================================ */
.blog-toc-mobile {
  display: none;
  margin-bottom: var(--s6);
}
.blog-toc-mobile summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--s3) var(--s4);
  border-radius: var(--r3);
  border: 1px solid var(--border-default);
  background: var(--bg-surface);
  font-family: var(--font);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-1);
  transition: background 0.2s;
}
.blog-toc-mobile summary::-webkit-details-marker { display: none; }
.blog-toc-mobile summary:hover { background: var(--bg-raised); }
.blog-toc-mobile summary:focus-visible {
  outline: 2px solid var(--blog-accent);
  outline-offset: 2px;
}
.blog-toc-mobile summary svg {
  transition: transform 0.2s;
}
.blog-toc-mobile[open] summary svg {
  transform: rotate(180deg);
}
.blog-toc-mobile ul {
  list-style: none;
  padding: var(--s3) 0 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.blog-toc-mobile a {
  display: block;
  padding: 8px 12px;
  border-radius: var(--r2);
  font-family: var(--font);
  font-size: 14px;
  color: var(--text-2);
  text-decoration: none;
  transition: background 0.2s, color 0.2s;
  border-left: 2px solid transparent;
}
.blog-toc-mobile a:hover {
  background: var(--blog-accent-muted);
  color: var(--blog-accent);
  border-left-color: var(--blog-accent-glow);
}
.blog-toc-mobile a.toc-h3 {
  padding-left: 20px;
  font-size: 13px;
}
@media (max-width: 1024px) {
  .blog-toc-mobile { display: block; }
}

/* ============================================================
   NEWSLETTER FORM STATES
   ============================================================ */
.blog-newsletter-form .form-message {
  font-family: var(--font);
  font-size: 14px;
  font-weight: 500;
  margin-top: var(--s3);
  min-height: 20px;
}
.blog-newsletter-form .form-message.success { color: var(--green); }
.blog-newsletter-form .form-message.error { color: var(--red); }
.blog-newsletter-form button[aria-busy="true"] {
  opacity: 0.7;
  cursor: wait;
}

/* ============================================================
   POST BODY MARKDOWN FALLBACK
   ============================================================ */
.post-body-pre-fallback {
  white-space: pre-wrap;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.7;
  color: var(--text-2);
  max-width: var(--blog-body-width);
  text-wrap: pretty;
}

/* ============================================================
   COVER-IMAGE PLACEHOLDER
   Used when a post has no cover_image so the layout doesn't
   collapse into a text-only design.
   ============================================================ */
.blog-cover-placeholder {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(120% 80% at 20% 0%, rgba(99,102,241,0.55) 0%, transparent 50%),
    radial-gradient(100% 80% at 100% 100%, rgba(129,140,248,0.45) 0%, transparent 55%),
    linear-gradient(135deg, #1e1b4b 0%, #312e81 55%, #4338ca 100%);
  overflow: hidden;
  isolation: isolate;
}
.blog-cover-placeholder::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(60% 50% at 50% 50%, rgba(255,255,255,.10) 0%, transparent 70%);
  mix-blend-mode: screen;
  pointer-events: none;
}
.blog-cover-placeholder::after {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
  pointer-events: none;
}
.blog-cover-placeholder-mark {
  position: relative;
  z-index: 1;
  font-family: var(--font);
  font-weight: 800;
  font-size: clamp(48px, 9vw, 96px);
  letter-spacing: -.04em;
  color: #fff;
  text-shadow: 0 4px 24px rgba(0,0,0,.35);
  line-height: 1;
}
.blog-cover-placeholder-hero {
  min-height: 420px;
  border-radius: 0;
}
[data-theme="light"] .blog-cover-placeholder {
  background:
    radial-gradient(120% 80% at 20% 0%, rgba(79,70,229,0.30) 0%, transparent 50%),
    radial-gradient(100% 80% at 100% 100%, rgba(99,102,241,0.30) 0%, transparent 55%),
    linear-gradient(135deg, #eef2ff 0%, #c7d2fe 55%, #818cf8 100%);
}
[data-theme="light"] .blog-cover-placeholder-mark {
  color: #312e81;
  text-shadow: 0 2px 12px rgba(99,102,241,.25);
}

/* Featured no-image variant gets a tighter aspect ratio */
.blog-featured-noimage .blog-featured-media { min-height: 260px; }
@media (max-width: 768px) {
  .blog-featured-noimage .blog-featured-media { min-height: 180px; }
}