/* ================================================================
   blog-detail.css — Blog Article Detail Page
   Loaded only on blog-ai-web-design.html (and future blog posts).
   Uses CSS variables from styles.css.
================================================================ */

/* ── Container (narrower than main, centred) ── */
.bd-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Breadcrumb ── */
.bd-breadcrumb {
  background: var(--c-bg);
  border-bottom: 1px solid var(--c-border);
  padding: 12px 0;
}
.bd-breadcrumb nav {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .8rem;
  flex-wrap: wrap;
}
.bd-breadcrumb a {
  color: var(--c-muted);
  text-decoration: none;
  transition: color .15s;
}
.bd-breadcrumb a:hover { color: var(--c-accent); }
.bd-breadcrumb span:last-child { color: var(--c-text); font-weight: 600; }
.bd-sep { color: var(--c-muted); }

/* ── Hero section ── */
.bd-hero {
  background: linear-gradient(155deg, #f3eeff 0%, #fff 65%);
  padding: 56px 0 48px;
  border-bottom: 1px solid var(--c-border);
}
.bd-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.bd-date, .bd-read {
  font-size: .8rem;
  color: var(--c-muted);
}
.bd-dot { color: var(--c-muted); }
.bd-title {
  font-family: var(--f-head);
  font-size: clamp(1.65rem, 3.5vw, 2.5rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.022em;
  color: var(--c-text);
  max-width: 780px;
  margin-bottom: 18px;
}
.bd-intro {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--c-muted);
  max-width: 680px;
  margin-bottom: 28px;
}
.bd-hero-author {
  display: flex;
  align-items: center;
  gap: 12px;
}
.bd-hero-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--c-accent), var(--c-accent-2));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: .9rem;
  flex-shrink: 0;
}
.bd-hero-name { font-weight: 700; font-size: .875rem; color: var(--c-text); }
.bd-hero-role { font-size: .78rem; color: var(--c-muted); margin-top: 2px; }

/* ── Layout: article + sticky sidebar ── */
.bd-layout { padding: 56px 0 80px; }
.bd-columns {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 48px;
  align-items: start;
}

/* ── Article ── */
.bd-article { min-width: 0; }  /* prevents grid blowout */

.bd-feature-img {
  width: 100%;
  height: 300px;
  border-radius: 16px;
  background: linear-gradient(135deg, #f3eeff, #fdf4ff);
  border: 1px solid var(--c-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 80px;
  margin-bottom: 36px;
}

.bd-article p {
  font-size: .9625rem;
  line-height: 1.85;
  color: var(--c-text);
  margin-bottom: 20px;
}
.bd-article h2 {
  font-family: var(--f-head);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--c-text);
  margin: 44px 0 14px;
  padding-top: 8px;
  border-top: 1px solid var(--c-border);
}
.bd-article h3 {
  font-family: var(--f-head);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--c-text);
  margin: 28px 0 10px;
}
.bd-article ul {
  margin: 0 0 24px 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.bd-article ul li {
  font-size: .9625rem;
  line-height: 1.75;
  color: var(--c-text);
  padding-left: 24px;
  position: relative;
}
.bd-article ul li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--c-accent);
  font-weight: 700;
}
.bd-article strong { color: var(--c-text); font-weight: 700; }

/* Blockquote */
.bd-quote {
  background: var(--c-accent-lt);
  border-left: 4px solid var(--c-accent);
  border-radius: 0 12px 12px 0;
  padding: 20px 24px;
  margin: 32px 0;
  font-size: 1rem;
  font-style: italic;
  color: var(--c-accent);
  font-weight: 600;
  line-height: 1.7;
}

/* Process steps */
.bd-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin: 28px 0 32px;
  border: 1px solid var(--c-border);
  border-radius: 16px;
  overflow: hidden;
}
.bd-step {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px 24px;
  border-bottom: 1px solid var(--c-border);
  transition: background .15s;
}
.bd-step:last-child { border-bottom: none; }
.bd-step:hover { background: var(--c-accent-lt); }
.bd-step-num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--c-accent);
  color: #fff;
  font-family: var(--f-head);
  font-weight: 800;
  font-size: .875rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}
.bd-step-body strong {
  display: block;
  font-size: .9375rem;
  font-weight: 700;
  color: var(--c-text);
  margin-bottom: 4px;
}
.bd-step-body p {
  font-size: .85rem !important;
  color: var(--c-muted) !important;
  margin-bottom: 0 !important;
  line-height: 1.6 !important;
}

/* CTA box */
.bd-cta-box {
  background: linear-gradient(135deg, var(--c-accent), var(--c-accent-2));
  border-radius: 16px;
  padding: 32px 36px;
  display: flex;
  align-items: flex-start;
  gap: 20px;
  margin: 40px 0;
}
.bd-cta-icon {
  font-size: 40px;
  flex-shrink: 0;
  line-height: 1;
}
.bd-cta-body h3 { color: #fff; font-size: 1.15rem; margin-bottom: 8px; }
.bd-cta-body p  { color: rgba(255,255,255,.8); font-size: .875rem; margin-bottom: 18px; }

/* Tags */
.bd-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 36px 0 28px;
  padding-top: 24px;
  border-top: 1px solid var(--c-border);
}
.bd-tag {
  display: inline-block;
  padding: 5px 14px;
  background: var(--c-accent-lt);
  color: var(--c-accent);
  border-radius: 99px;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .03em;
  transition: background .15s;
}
.bd-tag:hover { background: var(--c-accent); color: #fff; cursor: default; }

/* Share */
.bd-share {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}
.bd-share-label { font-size: .8rem; color: var(--c-muted); font-weight: 600; }
.bd-share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  border-radius: 99px;
  font-size: .8rem;
  font-weight: 600;
  border: 1.5px solid var(--c-border);
  background: var(--c-surface);
  color: var(--c-text);
  text-decoration: none;
  transition: all .15s;
}
.bd-share-btn:hover {
  border-color: var(--c-accent);
  color: var(--c-accent);
  background: var(--c-accent-lt);
}

/* Author card */
.bd-author-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: 14px;
  padding: 24px;
  margin-top: 8px;
}
.bd-author-av {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--c-accent), var(--c-accent-2));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 1rem;
  flex-shrink: 0;
}
.bd-author-nm { font-weight: 700; font-size: .9375rem; color: var(--c-text); margin-bottom: 2px; }
.bd-author-rl { font-size: .78rem; color: var(--c-muted); margin-bottom: 8px; }
.bd-author-bio { font-size: .84rem !important; color: var(--c-muted) !important; margin-bottom: 0 !important; }

/* ── Sidebar ── */
.bd-sidebar {
  position: sticky;
  top: calc(var(--nav-h) + 24px);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.bd-sidebar-widget {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 14px;
  padding: 22px;
}

.bd-widget-title {
  font-family: var(--f-head);
  font-size: .875rem;
  font-weight: 700;
  color: var(--c-text);
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--c-border);
}

.bd-widget-meta {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.bd-widget-meta li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: .8125rem;
  padding: 8px 0;
  border-bottom: 1px solid var(--c-border);
}
.bd-widget-meta li:last-child { border-bottom: none; }
.bd-widget-meta li span:first-child { color: var(--c-muted); }
.bd-widget-meta li span:last-child  { font-weight: 600; color: var(--c-text); }

.bd-widget-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.bd-widget-links a {
  display: block;
  font-size: .8375rem;
  color: var(--c-muted);
  text-decoration: none;
  padding: 7px 0;
  border-bottom: 1px solid var(--c-border);
  transition: color .15s;
}
.bd-widget-links a:last-child { border-bottom: none; }
.bd-widget-links a:hover { color: var(--c-accent); }

/* Sidebar CTA widget */
.bd-sidebar-cta-widget {
  background: linear-gradient(135deg, #f3eeff, #fdf4ff);
  border-color: #e9d5ff;
  text-align: center;
}
.bd-sc-icon { font-size: 36px; margin-bottom: 10px; }
.bd-sidebar-cta-widget h4 {
  font-family: var(--f-head);
  font-size: 1rem;
  font-weight: 700;
  color: var(--c-text);
  margin-bottom: 6px;
}
.bd-sidebar-cta-widget p {
  font-size: .8rem;
  color: var(--c-muted);
  margin-bottom: 14px;
  line-height: 1.6;
}
.bd-sc-outline { margin-top: 8px; }

/* ── Related posts ── */
.bd-related {
  background: var(--c-bg);
  border-top: 1px solid var(--c-border);
  padding: 64px 0;
}
.bd-related-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 36px;
  flex-wrap: wrap;
  gap: 12px;
}
.bd-related-header h2 {
  font-size: 1.4rem;
  color: var(--c-text);
}
.bd-related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.bd-rel-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 14px;
  overflow: hidden;
  transition: all .2s;
}
.bd-rel-card:hover {
  box-shadow: 0 8px 32px rgba(80,40,160,.12);
  transform: translateY(-3px);
}
.bd-rel-thumb {
  height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 44px;
}
.bd-rel-body { padding: 18px 20px; }
.bd-rel-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}
.bd-rel-body h3 {
  font-size: .9375rem;
  font-weight: 700;
  color: var(--c-text);
  margin-bottom: 8px;
  line-height: 1.4;
}
.bd-rel-body h3 a {
  color: inherit;
  text-decoration: none;
  transition: color .15s;
}
.bd-rel-body h3 a:hover { color: var(--c-accent); }
.bd-rel-body p {
  font-size: .8125rem;
  color: var(--c-muted);
  line-height: 1.6;
  margin-bottom: 14px;
}
.bd-rel-link {
  font-size: .8125rem;
  font-weight: 600;
  color: var(--c-accent);
  text-decoration: none;
  transition: gap .15s;
  display: inline-flex;
  gap: 4px;
}
.bd-rel-link:hover { gap: 8px; }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .bd-columns { grid-template-columns: 1fr; }
  .bd-sidebar {
    position: static;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .bd-sidebar-cta-widget { grid-column: 1 / -1; }
}

@media (max-width: 720px) {
  .bd-related-grid { grid-template-columns: 1fr; }
  .bd-sidebar { grid-template-columns: 1fr; }
  .bd-sidebar-cta-widget { grid-column: auto; }
  .bd-columns { gap: 32px; }
  .bd-layout { padding: 36px 0 56px; }
  .bd-hero { padding: 40px 0 36px; }
  .bd-cta-box { flex-direction: column; gap: 14px; padding: 24px; }
  .bd-feature-img { height: 200px; font-size: 56px; }
}

@media (max-width: 480px) {
  .bd-container { padding: 0 16px; }
  .bd-title { font-size: 1.55rem; }
  .bd-related-header { flex-direction: column; align-items: flex-start; }
}