/* ═══════════════════════════════════════════════════
   blog_detail.css — Blog Detail page-specific styles
   Shared base: styles/main.css
   ═══════════════════════════════════════════════════ */

/* ════════════════════════════════════════════════════
   ARTICLE HEADER
════════════════════════════════════════════════════ */
.art-header {
  padding-block-start: 80px;
  padding-block-end: 40px;
  background:
    radial-gradient(ellipse 700px 400px at 50% 70%, rgba(14,50,100,.3) 0%, transparent 65%),
    linear-gradient(160deg, #050b15 0%, #08152a 60%, #050b15 100%);
  border-block-end: 1px solid var(--c-border);
  position: relative;
  overflow: hidden;
}
.art-header::before {
  content: '';
  position: absolute; inset: 0;
  background:
    repeating-linear-gradient(90deg, transparent 0, transparent 79px, rgba(14,80,160,.04) 79px, rgba(14,80,160,.04) 80px),
    repeating-linear-gradient(0deg,  transparent 0, transparent 79px, rgba(14,80,160,.03) 79px, rgba(14,80,160,.03) 80px);
  pointer-events: none;
}

/* Breadcrumb */
.art-breadcrumb {
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
  margin-block-end: 24px;
  position: relative; z-index: 1;
}
.art-bc-link {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 12px; font-weight: 600; color: var(--c-gray);
  transition: color var(--t) var(--ease);
}
.art-bc-link:hover { color: var(--c-cyan); }
.art-bc-sep { font-size: 12px; color: var(--c-gray); opacity: .5; }
.art-bc-tag {
  font-size: 10px; font-weight: 800; letter-spacing: 1.2px;
  color: var(--c-cyan);
  background: rgba(56,189,248,.1);
  border: 1px solid rgba(56,189,248,.2);
  border-radius: 6px; padding: 3px 10px;
}

/* Title */
.art-title {
  font-size: clamp(26px, 4vw, 48px);
  font-weight: 900; line-height: 1.15; letter-spacing: -1px;
  margin-block-end: 28px;
  max-width: 860px;
  position: relative; z-index: 1;
}

/* Author bar */
.art-author-bar {
  display: flex; align-items: center; gap: 16px;
  flex-wrap: wrap;
  position: relative; z-index: 1;
}
.art-avatar {
  width: 40px; height: 40px; border-radius: 50%;
  background: linear-gradient(135deg, var(--c-cyan-d), var(--c-cyan));
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 800; color: #050b15;
  flex-shrink: 0;
}
.art-author-info {
  display: flex; flex-direction: column; gap: 2px;
}
.art-author-name {
  font-size: 14px; font-weight: 700; color: var(--c-white);
}
.art-author-role {
  font-size: 12px; color: var(--c-gray);
}
.art-meta-sep {
  width: 1px; height: 24px;
  background: var(--c-border);
  flex-shrink: 0;
}
.art-meta-info {
  display: flex; align-items: center; gap: 6px;
  font-size: 12.5px; color: var(--c-gray);
}
.art-meta-info svg { flex-shrink: 0; }

/* ════════════════════════════════════════════════════
   HERO IMAGE
════════════════════════════════════════════════════ */
.art-hero-img-wrap {
  background: var(--c-bg2);
  border-block-end: 1px solid var(--c-border);
  padding-block: 40px;
}
.art-hero-img {
  width: 100%;
  border-radius: 16px;
  object-fit: cover;
  aspect-ratio: 21 / 9;
  display: block;
  box-shadow: 0 0 0 1px var(--c-border), 0 24px 60px rgba(0,0,0,.4);
}

/* ════════════════════════════════════════════════════
   ARTICLE BODY
════════════════════════════════════════════════════ */
.art-body-wrap {
  background: var(--c-bg);
  padding-block: 64px;
  border-block-end: 1px solid var(--c-border);
}

.art-body-grid {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 64px;
  align-items: start;
}

/* Sidebar */
.art-sidebar {
  position: sticky;
  top: 88px;
  display: flex; flex-direction: column; gap: 28px;
}
.art-sidebar-section { display: flex; flex-direction: column; gap: 12px; }
.art-sidebar-title {
  font-size: 9.5px; font-weight: 800; letter-spacing: 2px;
  color: var(--c-gray); text-transform: uppercase;
}
.art-topics {
  display: flex; flex-direction: column; gap: 10px;
  list-style: none;
}
.art-topics li {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; color: var(--c-light);
}
.art-topic-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--c-cyan); flex-shrink: 0;
}
.art-share-btns {
  display: flex; gap: 8px;
}
.art-share-btn {
  width: 34px; height: 34px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 9px;
  border: 1px solid var(--c-border);
  color: var(--c-gray);
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease), background var(--t) var(--ease);
}
.art-share-btn:hover {
  color: var(--c-cyan);
  border-color: rgba(56,189,248,.3);
  background: rgba(56,189,248,.08);
}

/* Main Content */
.art-content { max-width: 720px; }

/* ════════════════════════════════════════════════════
   PROSE — raw WordPress content inside .art-content
════════════════════════════════════════════════════ */

/* Vertical rhythm: every direct child gets top gap from the previous */
.art-content > * + * { margin-block-start: 24px; }

/* Headings get extra breathing room */
.art-content > h2,
.art-content > h3,
.art-content > h4 { margin-block-start: 48px; }
.art-content > h2:first-child,
.art-content > h3:first-child,
.art-content > h4:first-child { margin-block-start: 0; }

.art-content h2 {
  font-size: 22px; font-weight: 800; letter-spacing: -.4px; line-height: 1.3;
  color: var(--c-white);
  padding-inline-start: 16px;
  border-inline-start: 3px solid var(--c-cyan);
}
.art-content h3 {
  font-size: 18px; font-weight: 700; letter-spacing: -.3px; line-height: 1.35;
  color: var(--c-white);
}
.art-content h4 {
  font-size: 15px; font-weight: 700; letter-spacing: -.2px;
  color: var(--c-white);
}

.art-content p {
  font-size: 15px; color: var(--c-gray); line-height: 1.85;
}

/* ── Lists ─────────────────────────────────────────── */
.art-content ul,
.art-content ol {
  padding-inline-start: 1.6em;   /* indent text past bullet/number */
  display: flex; flex-direction: column; gap: 10px;
  color: var(--c-gray); font-size: 15px; line-height: 1.75;
}
.art-content ul { list-style-type: disc; }
.art-content ol { list-style-type: decimal; }

.art-content ul li::marker { color: var(--c-cyan); }
.art-content ol li::marker { color: var(--c-cyan); font-weight: 700; }

/* Nested lists */
.art-content ul ul,
.art-content ol ol,
.art-content ul ol,
.art-content ol ul {
  padding-inline-start: 1.4em;
  margin-block-start: 8px;
  gap: 6px;
  font-size: 14px;
}

/* ── Inline elements ────────────────────────────────── */
.art-content strong,
.art-content b { color: var(--c-white); font-weight: 700; }
.art-content em,
.art-content i  { color: var(--c-light); font-style: italic; }

.art-content a {
  color: var(--c-cyan); text-decoration: underline;
  text-underline-offset: 3px;
  transition: opacity var(--t) var(--ease);
}
.art-content a:hover { opacity: .75; }

/* ── Blockquote ─────────────────────────────────────── */
.art-content blockquote {
  background: rgba(56,189,248,.04);
  border: 1px solid rgba(56,189,248,.18);
  border-inline-start: 3px solid var(--c-cyan);
  border-radius: 0 14px 14px 0;
  padding: 20px 24px 20px 22px;
  font-size: 15px; color: var(--c-light); line-height: 1.8; font-style: italic;
}

/* ── Separator ──────────────────────────────────────── */
.art-content hr {
  border: none; height: 1px;
  background: var(--c-border);
  margin-block: 40px;
}

/* ── Code ───────────────────────────────────────────── */
.art-content code {
  background: rgba(56,189,248,.08);
  border: 1px solid rgba(56,189,248,.12);
  border-radius: 5px; padding: 2px 7px;
  font-size: 13px; color: var(--c-cyan);
}
.art-content pre {
  background: var(--c-card); border: 1px solid var(--c-border);
  border-radius: 12px; padding: 20px 24px;
  overflow-x: auto; font-size: 13px; line-height: 1.7; color: var(--c-light);
}
.art-content pre code {
  background: none; border: none; padding: 0;
  font-size: inherit; color: inherit;
}

/* ── Images ─────────────────────────────────────────── */
.art-content img {
  width: 100%; border-radius: 12px; display: block;
  box-shadow: 0 0 0 1px var(--c-border), 0 12px 32px rgba(0,0,0,.3);
}

/* ── Tables ─────────────────────────────────────────── */
.art-content table {
  width: 100%; border-collapse: collapse; font-size: 14px;
  border: 1px solid var(--c-border); border-radius: 12px; overflow: hidden;
}
.art-content th {
  background: var(--c-card); padding: 12px 16px;
  font-weight: 700; color: var(--c-white); text-align: left;
  border-block-end: 1px solid var(--c-border);
}
.art-content td {
  padding: 12px 16px; color: var(--c-gray);
  border-block-end: 1px solid var(--c-border);
}
.art-content tr:last-child td { border-block-end: none; }

/* ═════════════════════════════════════════════════════ */

.art-lead {
  font-size: 17px; color: var(--c-light); line-height: 1.8;
  margin-block-end: 36px;
  font-weight: 400;
}

.art-h2 {
  font-size: 22px; font-weight: 800; letter-spacing: -.4px;
  line-height: 1.3;
  padding-inline-start: 16px;
  border-inline-start: 3px solid var(--c-cyan);
  margin-block: 36px 18px;
}

.art-p {
  font-size: 15px; color: var(--c-gray); line-height: 1.85;
  margin-block-end: 20px;
}

/* Feature Cards */
.art-feature-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
  margin-block: 28px;
}
.art-feature-card {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: 14px;
  padding: 22px 20px;
  transition: border-color var(--t) var(--ease);
}
.art-feature-card:hover { border-color: var(--c-border-h); }
.art-feature-icon {
  width: 40px; height: 40px; border-radius: 10px;
  background: rgba(56,189,248,.1);
  display: flex; align-items: center; justify-content: center;
  color: var(--c-cyan); margin-block-end: 14px;
}
.art-feature-title {
  font-size: 14px; font-weight: 700; margin-block-end: 8px;
}
.art-feature-desc {
  font-size: 13px; color: var(--c-gray); line-height: 1.65;
}

/* Inline Figure */
.art-figure {
  margin-block: 32px;
}
.art-figure-img {
  width: 100%; border-radius: 14px; object-fit: cover;
  aspect-ratio: 16 / 9;
  box-shadow: 0 0 0 1px var(--c-border), 0 16px 40px rgba(0,0,0,.35);
  display: block;
}
.art-figcaption {
  font-size: 10px; font-weight: 700; letter-spacing: 1.5px;
  color: var(--c-gray); text-transform: uppercase;
  text-align: center;
  margin-block-start: 12px;
}

/* Conclusion / Highlight Box */
.art-conclusion {
  background: rgba(56,189,248,.04);
  border: 1px solid rgba(56,189,248,.18);
  border-inline-start: 3px solid var(--c-cyan);
  border-radius: 0 14px 14px 0;
  padding: 24px 24px 24px 22px;
  margin-block-start: 32px;
}
.art-conclusion-title {
  font-size: 15px; font-weight: 800; color: var(--c-cyan);
  margin-block-end: 12px;
}
.art-conclusion-text {
  font-size: 14px; color: var(--c-light); line-height: 1.8;
}

/* ════════════════════════════════════════════════════
   RELATED ARTICLES
════════════════════════════════════════════════════ */
.art-related {
  background: var(--c-bg2);
  border-block-end: 1px solid var(--c-border);
}

.art-related-header {
  display: flex; align-items: baseline; gap: 16px; flex-wrap: wrap;
  margin-block-end: 36px;
}
.art-related-title {
  font-size: clamp(20px, 2.5vw, 28px);
  font-weight: 900; letter-spacing: -.5px;
}
.art-related-sub {
  font-size: 13.5px; color: var(--c-gray); flex: 1;
}
.art-related-all {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 700; color: var(--c-cyan);
  white-space: nowrap;
  transition: gap var(--t) var(--ease);
}
.art-related-all:hover { gap: 10px; }

.art-related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.art-rel-card {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: 14px;
  overflow: hidden;
  transition: border-color var(--t) var(--ease), transform var(--t) var(--ease), box-shadow var(--t) var(--ease);
}
.art-rel-card:hover {
  border-color: var(--c-border-h);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0,0,0,.3);
}

.art-rel-img-wrap {
  display: block; position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
}
.art-rel-img {
  width: 100%; height: 100%; object-fit: cover; display: block;
  transition: transform .6s var(--ease);
}
.art-rel-card:hover .art-rel-img { transform: scale(1.06); }

.art-rel-tag {
  position: absolute;
  inset-block-start: 12px; inset-inline-start: 12px;
  font-size: 9px; font-weight: 800; letter-spacing: 1.2px;
  color: var(--c-white); text-transform: uppercase;
  background: rgba(8,12,20,.8);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 6px; padding: 4px 10px;
}

.art-rel-body {
  padding: 16px 18px 18px;
  display: flex; flex-direction: column; gap: 8px;
}
.art-rel-title {
  font-size: 14.5px; font-weight: 700; line-height: 1.4;
}
.art-rel-title a { color: inherit; transition: color var(--t) var(--ease); }
.art-rel-title a:hover { color: var(--c-cyan); }
.art-rel-time {
  font-size: 11.5px; color: var(--c-gray); font-weight: 600;
}

/* ════════════════════════════════════════════════════
   RESPONSIVE
════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .art-body-grid { gap: 40px; }
  .art-related-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 900px) {
  .art-body-grid { grid-template-columns: 1fr; }
  .art-sidebar {
    position: static;
    flex-direction: row; flex-wrap: wrap;
    padding-block-end: 32px;
    border-block-end: 1px solid var(--c-border);
  }
  .art-sidebar-section { flex: 1; min-width: 140px; }
  .art-related-grid { grid-template-columns: repeat(2, 1fr); }
  .art-hero-img { aspect-ratio: 16 / 9; }
}

@media (max-width: 768px) {
  .art-title { font-size: clamp(22px, 6vw, 36px); }
  .art-feature-grid { grid-template-columns: 1fr; }
  .art-author-bar { gap: 10px; }
  .art-meta-sep { display: none; }
}

@media (max-width: 580px) {
  .art-related-grid { grid-template-columns: 1fr; }
  .art-related-header { flex-direction: column; gap: 8px; }
  .art-breadcrumb { gap: 6px; }
}