/* ============================================================
   BLOG.CSS — Blue Premium Theme  v3
   Matches home page hm-post card style with gradient thumbs
   Primary: #4361ee  |  Background: #f0f4ff
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

/* ─────────────────────────────────────────────────────────
   TOKENS
───────────────────────────────────────────────────────── */
:root {
  --pr:          #4361ee;
  --pr-d:        #2f4dd6;
  --pr-l:        #eef0fd;
  --pr-glow:     rgba(67,97,238,0.18);

  --tx:          #111827;
  --tx-2:        #4b5563;
  --tx-3:        #9ca3af;

  --bg:          #f0f4ff;
  --bg-card:     #ffffff;
  --bd:          #e4e7f8;
  --bd-h:        rgba(67,97,238,0.35);

  --sh-sm:  0 1px 4px rgba(67,97,238,0.06);
  --sh-md:  0 4px 18px rgba(67,97,238,0.09);
  --sh-hov: 0 12px 36px rgba(67,97,238,0.14), 0 2px 6px rgba(67,97,238,0.06);

  --r:    12px;
  --r-lg: 18px;
  --r-xl: 26px;

  --tr: .20s ease;

  --f-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* ─────────────────────────────────────────────────────────
   BASE
───────────────────────────────────────────────────────── */
.blog-page *, .blog-page *::before, .blog-page *::after { box-sizing: border-box; margin: 0; padding: 0; }
.blog-page { font-family: var(--f-body); color: var(--tx); -webkit-font-smoothing: antialiased; }
.blog-page a { text-decoration: none; color: inherit; }
.blog-page button { font-family: inherit; cursor: pointer; border: none; background: none; }
.blog-page input  { font-family: inherit; }
.blog-page svg    { display: block; flex-shrink: 0; }

/* ─────────────────────────────────────────────────────────
   PAGE BACKGROUND  — blue radial blooms
───────────────────────────────────────────────────────── */
.blog-page {
  min-height: 100vh;
  background:
    radial-gradient(ellipse 70% 40% at 50% 0%,   rgba(67,97,238,0.10) 0%, transparent 65%),
    radial-gradient(ellipse 45% 30% at 85% 55%,  rgba(108,99,255,0.06) 0%, transparent 55%),
    radial-gradient(ellipse 35% 25% at 10% 80%,  rgba(67,97,238,0.05) 0%, transparent 50%),
    #f0f4ff;
  transform: translateZ(0);
}

/* ─────────────────────────────────────────────────────────
   LAYOUT
───────────────────────────────────────────────────────── */
.blog-container  { max-width: 1200px; margin: 0 auto; padding: 0 24px; position: relative; z-index: 1; }
.blog-page-inner { padding-top: 48px; padding-bottom: 100px; }

/* ─────────────────────────────────────────────────────────
   HERO — glass panel, blue glow
───────────────────────────────────────────────────────── */
.blog-hero {
  text-align: center;
  padding: 56px 40px 40px;
  position: relative;
  border-radius: var(--r-xl);
  margin-bottom: 32px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  background: rgba(255,255,255,0.85);
  border: 1.5px solid rgba(255,255,255,0.95);
  box-shadow:
    inset 0 2px 0 rgba(255,255,255,0.9),
    0 8px 40px rgba(67,97,238,0.10),
    0 1px 0 rgba(67,97,238,0.06);
}
.blog-hero__glow {
  position: absolute;
  top: -80px; left: 50%;
  transform: translateX(-50%);
  width: 500px; height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(67,97,238,0.14) 0%, transparent 70%);
  pointer-events: none;
}
.blog-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: rgba(67,97,238,0.08);
  border: 1px solid rgba(67,97,238,0.20);
  border-radius: 999px;
  padding: 5px 14px;
  margin-bottom: 20px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .10em;
  text-transform: uppercase;
  color: var(--pr);
}
.blog-hero__dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--pr);
  display: inline-block;
}
.blog-hero__heading {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 900;
  color: var(--tx);
  letter-spacing: -.04em;
  line-height: 1.10;
  margin-bottom: 14px;
}
.blog-hero__heading em {
  font-style: italic;
  color: var(--pr);
}
.blog-hero__sub {
  font-size: 15px;
  color: var(--tx-2);
  line-height: 1.70;
  max-width: 480px;
  margin-bottom: 28px;
}

/* ── Search ── */
.blog-search-wrap {
  position: relative;
  width: 100%;
  max-width: 480px;
  margin-bottom: 24px;
}
.blog-search-icon--left {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--tx-3);
  pointer-events: none;
}
.blog-search-input {
  width: 100%;
  padding: 12px 18px 12px 42px;
  border: 1.5px solid var(--bd);
  border-radius: 50px;
  font-size: 14px;
  color: var(--tx);
  background: #fff;
  outline: none;
  transition: border-color var(--tr), box-shadow var(--tr);
}
.blog-search-input:focus {
  border-color: var(--pr);
  box-shadow: 0 0 0 3px rgba(67,97,238,0.12);
}
.blog-search-input::placeholder { color: var(--tx-3); }

/* ── Category filter pills ── */
.blog-filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}
.blog-filter-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 7px 16px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--tx-2);
  background: rgba(255,255,255,0.90);
  border: 1.5px solid var(--bd);
  cursor: pointer;
  transition: all var(--tr);
  white-space: nowrap;
  user-select: none;
}
.blog-filter-pill:hover {
  border-color: var(--pr);
  color: var(--pr);
  background: var(--pr-l);
}
.blog-filter-pill.active {
  background: var(--pr);
  color: #fff;
  border-color: var(--pr);
  box-shadow: 0 4px 14px rgba(67,97,238,0.28);
}
.pill-icon { font-size: 13px; line-height: 1; }

/* ── Sticky filter ── */
.blog-filter-sticky {
  position: sticky;
  top: 60px;
  z-index: 80;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 12px 24px;
  margin: 0 -24px 28px;
  background: rgba(240,244,255,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--bd);
  scrollbar-width: none;
}
.blog-filter-sticky::-webkit-scrollbar { display: none; }
.blog-filter-sticky .blog-filter-pill {
  flex-shrink: 0;
  font-size: 12px;
  padding: 5px 14px;
}

/* ─────────────────────────────────────────────────────────
   BLOG GRID
───────────────────────────────────────────────────────── */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

/* ─────────────────────────────────────────────────────────
   BLOG CARD — home page hm-post style
   Gradient thumbnail top + white body below
───────────────────────────────────────────────────────── */
.blog-card {
  background: var(--bg-card);
  border: 1.5px solid var(--bd);
  border-radius: var(--r-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  transition: transform var(--tr), box-shadow var(--tr), border-color var(--tr);
  will-change: transform;
}
.blog-card:hover {
  border-color: var(--bd-h);
  box-shadow: var(--sh-hov);
  transform: translateY(-5px);
}
.blog-card.is-hidden { display: none; }

/* ── Thumbnail ── */
.blog-card__thumb {
  height: 160px;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.blog-card__thumb-bg {
  position: absolute;
  inset: 0;
}
/* Decorative blobs */
.blog-card__blob1,
.blog-card__blob2 {
  position: absolute;
  border-radius: 50%;
  opacity: .22;
  pointer-events: none;
}
.blog-card__blob1 {
  width: 120px; height: 120px;
  top: -35px; right: -25px;
  background: rgba(255,255,255,.65);
}
.blog-card__blob2 {
  width: 80px; height: 80px;
  bottom: -25px; left: 18px;
  background: rgba(255,255,255,.55);
}
/* Icon circle */
.blog-card__icon-wrap {
  position: relative;
  z-index: 1;
  width: 72px; height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.blog-card__icon-wrap::before {
  content: '';
  position: absolute; inset: 0;
  border-radius: 50%;
  background: rgba(255,255,255,.32);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1.5px solid rgba(255,255,255,.48);
}
.blog-card__icon {
  position: relative;
  z-index: 1;
  width: 28px; height: 28px;
  color: rgba(255,255,255,.92);
  filter: drop-shadow(0 2px 6px rgba(0,0,0,.18));
}
/* Category ribbon */
.blog-card__cat-ribbon {
  position: absolute;
  bottom: 11px; left: 13px;
  font-size: .62rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .10em;
  color: #fff;
  background: rgba(0,0,0,.26);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,.22);
  padding: 4px 10px;
  border-radius: 50px;
  white-space: nowrap;
  z-index: 2;
}
/* Read time ribbon (top-right) */
.blog-card__rt-ribbon {
  position: absolute;
  top: 11px; right: 13px;
  font-size: .62rem;
  font-weight: 700;
  color: rgba(255,255,255,.85);
  background: rgba(0,0,0,.20);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid rgba(255,255,255,.18);
  padding: 3px 9px;
  border-radius: 50px;
  z-index: 2;
}

/* ── Card body ── */
.blog-card__body {
  padding: 18px 20px 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.blog-card__title {
  font-size: .92rem;
  font-weight: 700;
  color: var(--tx);
  line-height: 1.45;
  letter-spacing: -.012em;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color var(--tr);
}
.blog-card:hover .blog-card__title { color: var(--pr); }
.blog-card__excerpt {
  font-size: .78rem;
  color: var(--tx-2);
  line-height: 1.62;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.blog-card__footer {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid #eef0f8;
  display: flex;
  align-items: center;
  gap: 8px;
}
.blog-card__avatar {
  width: 26px; height: 26px;
  border-radius: 50%;
  background: var(--pr-l);
  color: var(--pr);
  font-size: 11px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 1.5px solid rgba(67,97,238,.18);
}
.blog-card__author {
  font-size: .72rem;
  font-weight: 600;
  color: var(--tx-2);
  flex: 1;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}
.blog-card__date {
  font-size: .70rem;
  color: var(--tx-3);
  white-space: nowrap;
  flex-shrink: 0;
}
.blog-card__read {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: .74rem;
  font-weight: 700;
  color: var(--pr);
  margin-top: 4px;
  transition: gap var(--tr);
}
.blog-card:hover .blog-card__read { gap: 8px; }

/* ─────────────────────────────────────────────────────────
   GRADIENT THEMES — per category
───────────────────────────────────────────────────────── */
.bg-grad--pdf        { background: linear-gradient(135deg, #f27328 0%, #ef4444 100%); }
.bg-grad--image      { background: linear-gradient(135deg, #0ea5e9 0%, #4361ee 100%); }
.bg-grad--dev        { background: linear-gradient(135deg, #4361ee 0%, #6c63ff 100%); }
.bg-grad--seo        { background: linear-gradient(135deg, #f59e0b 0%, #eab308 100%); }
.bg-grad--design     { background: linear-gradient(135deg, #ec4899 0%, #8b5cf6 100%); }
.bg-grad--tutorial   { background: linear-gradient(135deg, #14b8a6 0%, #0ea5e9 100%); }
.bg-grad--security   { background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%); }
.bg-grad--file       { background: linear-gradient(135deg, #f59e0b 0%, #f27328 100%); }
.bg-grad--prod       { background: linear-gradient(135deg, #10b981 0%, #14b8a6 100%); }
.bg-grad--blog       { background: linear-gradient(135deg, #f59e0b 0%, #ec4899 100%); }
.bg-grad--social     { background: linear-gradient(135deg, #0ea5e9 0%, #10b981 100%); }
.bg-grad--ai         { background: linear-gradient(135deg, #8b5cf6 0%, #4361ee 100%); }

/* ─────────────────────────────────────────────────────────
   NO RESULTS
───────────────────────────────────────────────────────── */
.blog-no-results {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 60px 24px;
  color: var(--tx-3);
  font-size: 14px;
  text-align: center;
}

/* ─────────────────────────────────────────────────────────
   EMPTY STATE + SKELETON
───────────────────────────────────────────────────────── */
.blog-skeleton {
  background: #fff;
  border: 1.5px solid var(--bd);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.blog-skeleton__thumb {
  height: 160px;
  background: linear-gradient(90deg, #e8ebf8 25%, #f0f3ff 50%, #e8ebf8 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite;
}
.blog-skeleton__body { padding: 18px 20px 20px; }
.blog-skeleton__line {
  border-radius: 6px;
  background: linear-gradient(90deg, #e8ebf8 25%, #f0f3ff 50%, #e8ebf8 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite;
  margin-bottom: 10px;
}
.blog-skeleton__line--short  { width: 35%; }
.blog-skeleton__line--medium { width: 65%; }
.blog-skeleton__line--long   { width: 90%; }
@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.blog-empty {
  text-align: center;
  padding: 60px 24px;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .5s ease, transform .5s ease;
}
.blog-empty.is-visible { opacity: 1; transform: none; }
.blog-empty__icon {
  width: 56px; height: 56px;
  margin: 0 auto 16px;
  border-radius: 16px;
  background: var(--pr-l);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--pr);
}
.blog-empty__title { font-size: 1.15rem; font-weight: 800; margin-bottom: 8px; }
.blog-empty__text  { font-size: .9rem; color: var(--tx-2); }

/* ─────────────────────────────────────────────────────────
   SCROLL REVEAL
───────────────────────────────────────────────────────── */
.blog-reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .5s ease, transform .5s ease;
}
.blog-reveal.is-visible { opacity: 1; transform: none; }

/* ─────────────────────────────────────────────────────────
   NEWSLETTER
───────────────────────────────────────────────────────── */
.blog-newsletter {
  margin-top: 64px;
  border-radius: var(--r-xl);
  padding: clamp(32px,5vw,52px) clamp(24px,5vw,52px);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
  background: linear-gradient(135deg, #4361ee 0%, #6c63ff 100%);
  box-shadow: 0 8px 40px rgba(67,97,238,0.30);
}
.blog-newsletter__glow {
  position: absolute;
  top: -60px; right: -60px;
  width: 300px; height: 300px;
  border-radius: 50%;
  background: rgba(255,255,255,.08);
  pointer-events: none;
}
.blog-newsletter__glow-2 {
  position: absolute;
  bottom: -80px; left: -40px;
  width: 260px; height: 260px;
  border-radius: 50%;
  background: rgba(255,255,255,.06);
  pointer-events: none;
}
.blog-newsletter__content { position: relative; z-index: 1; }
.blog-newsletter__label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .10em;
  text-transform: uppercase;
  color: rgba(255,255,255,.75);
  margin-bottom: 10px;
}
.blog-newsletter__title {
  font-size: clamp(1.2rem, 2.5vw, 1.7rem);
  font-weight: 900;
  color: #fff;
  letter-spacing: -.03em;
  margin-bottom: 6px;
}
.blog-newsletter__sub {
  font-size: 14px;
  color: rgba(255,255,255,.75);
  line-height: 1.6;
}
.blog-newsletter__form {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
  flex-shrink: 0;
}
.blog-newsletter__input {
  flex: 1;
  min-width: 220px;
  padding: 12px 18px;
  border-radius: 50px;
  border: 1.5px solid rgba(255,255,255,.30);
  background: rgba(255,255,255,.15);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: #fff;
  font-size: 14px;
  outline: none;
  transition: border-color var(--tr), background var(--tr);
}
.blog-newsletter__input::placeholder { color: rgba(255,255,255,.60); }
.blog-newsletter__input:focus {
  border-color: rgba(255,255,255,.70);
  background: rgba(255,255,255,.22);
}
.blog-newsletter__btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 50px;
  background: #fff;
  color: var(--pr);
  font-size: 14px;
  font-weight: 800;
  cursor: pointer;
  border: none;
  transition: transform var(--tr), box-shadow var(--tr);
  white-space: nowrap;
}
.blog-newsletter__btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(0,0,0,.15);
}

/* ─────────────────────────────────────────────────────────
   RESPONSIVE
───────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .blog-grid { grid-template-columns: repeat(2, 1fr); gap: 18px; }
}
@media (max-width: 580px) {
  .blog-grid  { grid-template-columns: 1fr; gap: 16px; }
  .blog-hero  { padding: 40px 20px 32px; }
  .blog-hero__heading { font-size: 1.6rem; }
  .blog-filter-bar { gap: 6px; }
  .blog-newsletter { flex-direction: column; }
  .blog-newsletter__form { width: 100%; }
  .blog-page-inner { padding-top: 32px; padding-bottom: 64px; }
}


/* ============================================================
   BLOG ARTICLE PAGE — show.php styles
   All .blog-article-*, .blog-prose, .blog-sidebar, etc.
   ============================================================ */

/* ── CSS variable aliases so show.php var(--blog-*) resolve ── */
:root {
  --blog-text-1:   #0f172a;
  --blog-text-2:   #64748b;
  --blog-text-3:   #94a3b8;
  --blog-surface:  #ffffff;
  --blog-border:   #e2e8f0;
  --blog-bg-2:     #f8fafc;
}

/* ── Article page wrapper ── */
.blog-article-page {
  background: var(--bg, #f0f4ff);
  min-height: 100vh;
  padding-bottom: 4rem;
}

.blog-article-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ── Breadcrumb ── */
.blog-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  padding: 1.25rem 0 1.5rem;
  font-size: 0.8125rem;
  color: var(--blog-text-2);
  flex-wrap: wrap;
}
.blog-breadcrumb a {
  color: var(--pr, #4361ee);
  text-decoration: none;
  font-weight: 500;
  transition: opacity .15s;
}
.blog-breadcrumb a:hover { opacity: .75; }
.blog-breadcrumb svg { color: var(--blog-text-3); flex-shrink: 0; }

/* ── Two-column layout: article + sidebar ── */
.blog-article-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 2.5rem;
  align-items: start;
}
@media (max-width: 1024px) {
  .blog-article-layout {
    grid-template-columns: 1fr;
  }
}

/* ── Article header ── */
.blog-article-header {
  margin-bottom: 1.75rem;
}
.blog-article-header__meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}
.blog-article-header__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--blog-text-1);
  line-height: 1.2;
  margin: 0 0 0.875rem;
  letter-spacing: -0.02em;
}
.blog-article-header__excerpt {
  font-size: 1.0625rem;
  color: var(--blog-text-2);
  line-height: 1.65;
  margin: 0;
  max-width: 680px;
}

/* ── Inline meta bits ── */
.blog-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.blog-dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--blog-text-3);
  display: inline-block;
  flex-shrink: 0;
}
.blog-readtime,
.blog-date {
  font-size: 0.8125rem;
  color: var(--blog-text-2);
  white-space: nowrap;
}

/* ── Author card ── */
.blog-author-card {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  padding: 0.875rem 1rem;
  background: var(--blog-surface);
  border: 1px solid var(--blog-border);
  border-radius: 12px;
  margin-bottom: 1.5rem;
}
.blog-author-card__name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--blog-text-1);
  margin: 0;
}
.blog-author-card__sub {
  font-size: 0.8rem;
  color: var(--blog-text-2);
  margin: 0;
}
.blog-author-card__actions {
  margin-left: auto;
  display: flex;
  gap: 0.5rem;
}
.blog-author-name {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--blog-text-2);
}

/* ── Avatar ── */
.blog-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--pr, #4361ee) 0%, #6c63ff 100%);
  color: #fff;
  font-size: 0.8125rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  user-select: none;
}
.blog-avatar--lg {
  width: 44px;
  height: 44px;
  font-size: 1rem;
}

/* ── Social share buttons ── */
.blog-social-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: var(--blog-bg-2);
  border: 1px solid var(--blog-border);
  color: var(--blog-text-2);
  text-decoration: none;
  transition: background .15s, color .15s;
}
.blog-social-btn:hover {
  background: var(--pr-l, #eef0fd);
  color: var(--pr, #4361ee);
  border-color: var(--pr, #4361ee);
}

/* ── Cover image area ── */
.blog-cover {
  position: relative;
  height: 220px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--pr, #4361ee) 0%, #6c63ff 100%);
  overflow: hidden;
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
}
.blog-cover__pattern {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 20% 50%, rgba(255,255,255,0.12) 0%, transparent 50%),
                    radial-gradient(circle at 80% 20%, rgba(255,255,255,0.08) 0%, transparent 40%);
}
.blog-cover__icon {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  background: rgba(255,255,255,0.18);
  border-radius: 20px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1.5px solid rgba(255,255,255,0.35);
  color: #fff;
}

/* ── Article prose body ── */
.blog-prose {
  font-size: 1.0625rem;
  line-height: 1.78;
  color: var(--blog-text-1);
  margin-bottom: 2rem;
}
.blog-prose h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--blog-text-1);
  margin: 2.25rem 0 0.875rem;
  line-height: 1.3;
  letter-spacing: -0.015em;
  padding-top: 0.25rem;
}
.blog-prose h3 {
  font-size: 1.1875rem;
  font-weight: 600;
  color: var(--blog-text-1);
  margin: 1.75rem 0 0.625rem;
  line-height: 1.35;
}
.blog-prose h4 {
  font-size: 1.0625rem;
  font-weight: 600;
  margin: 1.5rem 0 0.5rem;
}
.blog-prose p {
  margin: 0 0 1.25rem;
}
.blog-prose ul,
.blog-prose ol {
  padding-left: 1.5rem;
  margin: 0 0 1.25rem;
}
.blog-prose li {
  margin-bottom: 0.5rem;
}
.blog-prose strong { font-weight: 700; color: var(--blog-text-1); }
.blog-prose a {
  color: var(--pr, #4361ee);
  text-decoration: underline;
  text-decoration-color: rgba(67,97,238,0.35);
  text-underline-offset: 3px;
  transition: text-decoration-color .15s;
}
.blog-prose a:hover { text-decoration-color: var(--pr, #4361ee); }
.blog-prose blockquote {
  border-left: 4px solid var(--pr, #4361ee);
  margin: 1.5rem 0;
  padding: 0.75rem 1.25rem;
  background: var(--pr-l, #eef0fd);
  border-radius: 0 10px 10px 0;
  color: var(--blog-text-2);
  font-style: italic;
}
.blog-prose code {
  background: var(--blog-bg-2);
  border: 1px solid var(--blog-border);
  border-radius: 5px;
  padding: 1px 6px;
  font-size: 0.875em;
  font-family: 'Fira Mono', Consolas, monospace;
  color: #c9560f;
}
.blog-prose pre {
  background: #1e293b;
  color: #e2e8f0;
  border-radius: 10px;
  padding: 1.25rem;
  overflow-x: auto;
  margin: 1.5rem 0;
  font-size: 0.875rem;
  line-height: 1.6;
}
.blog-prose pre code {
  background: none;
  border: none;
  padding: 0;
  color: inherit;
}
.blog-prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.9375rem;
}
.blog-prose th,
.blog-prose td {
  padding: 0.625rem 0.875rem;
  border: 1px solid var(--blog-border);
  text-align: left;
}
.blog-prose th {
  background: var(--blog-bg-2);
  font-weight: 600;
  color: var(--blog-text-1);
}
.blog-prose img {
  max-width: 100%;
  border-radius: 10px;
  margin: 1.5rem 0;
}
.blog-prose hr {
  border: none;
  border-top: 1px solid var(--blog-border);
  margin: 2rem 0;
}

/* ── Tags ── */
.blog-article-tags {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.75rem;
  padding: 1.25rem 0;
  border-top: 1px solid var(--blog-border);
}
.blog-tag-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--blog-text-2);
}
.blog-tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  background: var(--blog-bg-2);
  border: 1px solid var(--blog-border);
  font-size: 0.8rem;
  color: var(--blog-text-2);
  text-decoration: none;
  transition: background .15s, border-color .15s, color .15s;
}
.blog-tag:hover {
  background: var(--pr-l, #eef0fd);
  border-color: var(--pr, #4361ee);
  color: var(--pr, #4361ee);
}

/* ── Tool CTA banner ── */
.blog-tool-cta {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.125rem 1.25rem;
  background: var(--blog-surface);
  border: 1.5px solid var(--blog-border);
  border-radius: 14px;
  margin-bottom: 2rem;
  box-shadow: 0 2px 12px rgba(67,97,238,0.06);
}
.blog-tool-cta__text { flex: 1; }
.blog-tool-cta__title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--blog-text-1);
  margin: 0 0 0.2rem;
}
.blog-tool-cta__sub {
  font-size: 0.8125rem;
  color: var(--blog-text-2);
  margin: 0;
}
.blog-tool-cta__btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 18px;
  background: var(--pr, #4361ee);
  color: #fff;
  border-radius: 9px;
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  transition: background .18s, transform .18s;
}
.blog-tool-cta__btn:hover {
  background: var(--pr-d, #2f4dd6);
  transform: translateY(-1px);
  color: #fff;
}
@media (max-width: 640px) {
  .blog-tool-cta { flex-wrap: wrap; }
  .blog-tool-cta__btn { width: 100%; justify-content: center; }
}

/* ── Section headings (shared) ── */
.blog-section-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--blog-text-1);
  margin: 0 0 0.25rem;
  letter-spacing: -0.01em;
}

/* ── Related articles section ── */
.blog-related-articles-section {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--blog-border);
}
.blog-related-articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.25rem;
  margin-top: 1.25rem;
}
@media (max-width: 600px) {
  .blog-related-articles-grid { grid-template-columns: 1fr; }
}

/* ── Sidebar ── */
.blog-sidebar {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  position: sticky;
  top: 80px;
}
@media (max-width: 1024px) {
  .blog-sidebar { position: static; }
}

.blog-sidebar-card {
  background: var(--blog-surface);
  border: 1px solid var(--blog-border);
  border-radius: 14px;
  padding: 1.25rem;
}
.blog-sidebar-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--blog-text-1);
  margin: 0 0 0.875rem;
  letter-spacing: -0.01em;
}

/* TOC links */
#toc-nav {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.blog-toc-link {
  display: block;
  font-size: 0.8125rem;
  color: var(--blog-text-2);
  text-decoration: none;
  padding: 5px 8px 5px 12px;
  border-left: 2px solid var(--blog-border);
  border-radius: 0 4px 4px 0;
  line-height: 1.4;
  transition: color .15s, border-color .15s, background .15s;
}
.blog-toc-link:hover,
.blog-toc-link.active {
  color: var(--pr, #4361ee);
  border-left-color: var(--pr, #4361ee);
  background: var(--pr-l, #eef0fd);
}

/* ── Sidebar newsletter ── */
.blog-sidebar-newsletter {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--pr, #4361ee) 0%, #6c63ff 100%);
  border-radius: 14px;
  padding: 1.5rem 1.25rem;
  color: #fff;
}
.blog-sidebar-newsletter__glow {
  position: absolute;
  top: -40px;
  right: -40px;
  width: 130px;
  height: 130px;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
  filter: blur(20px);
  pointer-events: none;
}
.blog-sidebar-newsletter__icon {
  width: 40px;
  height: 40px;
  background: rgba(255,255,255,0.2);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.875rem;
  color: #fff;
}
.blog-sidebar-newsletter__title {
  font-size: 1rem;
  font-weight: 700;
  margin: 0 0 0.375rem;
  color: #fff;
}
.blog-sidebar-newsletter__sub {
  font-size: 0.8125rem;
  opacity: 0.85;
  margin: 0 0 1rem;
  line-height: 1.5;
}
.blog-sidebar-newsletter__input {
  width: 100%;
  padding: 9px 12px;
  border-radius: 8px;
  border: none;
  font-size: 0.875rem;
  background: rgba(255,255,255,0.95);
  color: var(--blog-text-1);
  margin-bottom: 0.625rem;
  outline: none;
  box-sizing: border-box;
}
.blog-sidebar-newsletter__input::placeholder { color: #94a3b8; }
.blog-sidebar-newsletter__input:focus {
  box-shadow: 0 0 0 2px rgba(255,255,255,0.5);
}
.blog-sidebar-newsletter__btn {
  width: 100%;
  padding: 9px 12px;
  border-radius: 8px;
  border: none;
  background: rgba(255,255,255,0.2);
  color: #fff;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  border: 1.5px solid rgba(255,255,255,0.4);
  transition: background .18s;
}
.blog-sidebar-newsletter__btn:hover {
  background: rgba(255,255,255,0.3);
}

/* ── Reveal animation ── */
.blog-reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.blog-reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Related articles card thumb extras ── */
.blog-card__top-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
  flex-wrap: wrap;
}
.blog-card__thumb-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.12);
}
.blog-card__thumb-icon {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}
.blog-card__thumb-icon-inner {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.28);
  border-radius: 50%;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1.5px solid rgba(255,255,255,0.45);
  color: rgba(255,255,255,0.92);
}

/* ── Tool CTA icon wrapper ── */
.blog-tool-cta__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}