/* ===== GUIDE/ARTICLE PAGE STYLES ===== */

/* --- Guide Hero --- */
.guide-hero {
  position: relative;
  min-height: 420px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  padding: 160px 0 48px;
}

.guide-hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.guide-hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.guide-hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10,14,20,0.4) 0%, rgba(10,14,20,0.92) 100%);
}

.guide-hero .container { position: relative; z-index: 1; }

.guide-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.guide-breadcrumb a { color: var(--text-muted); }
.guide-breadcrumb a:hover { color: var(--btc-orange); }
.guide-breadcrumb .sep { opacity: 0.4; }

.guide-tag {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
}

.guide-tag.guide { background: rgba(0,136,255,0.15); color: var(--brand-blue); }
.guide-tag.analysis { background: rgba(247,147,26,0.15); color: var(--btc-orange); }
.guide-tag.security { background: rgba(0,230,138,0.15); color: var(--accent-green); }
.guide-tag.news { background: rgba(136,148,175,0.15); color: var(--text-secondary); }
.guide-tag.review { background: rgba(107,63,160,0.15); color: #B388FF; }

.guide-hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  margin-bottom: 16px;
  max-width: 700px;
}

.guide-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.guide-meta .meta-dot { opacity: 0.4; }

/* --- Guide Layout --- */
.guide-body {
  padding: 60px 0 0;
}

.guide-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 48px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Sidebar TOC --- */
.guide-sidebar {
  position: sticky;
  top: 90px;
  align-self: start;
}

.guide-toc {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 20px;
}

.guide-toc h4 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.guide-toc ul {
  list-style: none;
}

.guide-toc li {
  margin-bottom: 10px;
}

.guide-toc a {
  color: var(--text-secondary);
  font-size: 0.85rem;
  display: block;
  padding: 4px 0;
  border-left: 2px solid transparent;
  padding-left: 12px;
  transition: all var(--transition);
}

.guide-toc a:hover,
.guide-toc a.active {
  color: var(--btc-orange);
  border-left-color: var(--btc-orange);
}

/* --- Guide Content --- */
.guide-content {
  max-width: 760px;
}

.guide-section {
  margin-bottom: 48px;
}

.guide-section h2 {
  font-size: 1.5rem;
  margin-bottom: 16px;
  padding-top: 8px;
}

.guide-section p {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 16px;
}

.guide-section ul, .guide-section ol {
  color: var(--text-secondary);
  padding-left: 24px;
  margin-bottom: 16px;
  line-height: 1.8;
}

.guide-section li { margin-bottom: 8px; }

/* --- Info Box --- */
.guide-info-box {
  background: rgba(0,136,255,0.06);
  border-left: 3px solid var(--brand-blue);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 16px 20px;
  margin: 24px 0;
}

.guide-info-box p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin: 0;
}

.guide-info-box strong { color: var(--text-primary); }

/* --- Cross-Link Callout --- */
.cross-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  background: rgba(247,147,26,0.05);
  border: 1px solid rgba(247,147,26,0.15);
  border-radius: var(--radius);
  margin: 24px 0;
  transition: all var(--transition);
}

.cross-link:hover {
  background: rgba(247,147,26,0.1);
  border-color: rgba(247,147,26,0.3);
  transform: translateX(4px);
}

.cross-link-icon {
  font-size: 1.2rem;
  flex-shrink: 0;
}

.cross-link-text {
  font-size: 0.9rem;
}

.cross-link-text strong { color: var(--text-primary); display: block; }
.cross-link-text span { color: var(--text-muted); font-size: 0.8rem; }

/* --- Guide Table --- */
.guide-table-wrap {
  overflow-x: auto;
  margin: 24px 0;
  border-radius: var(--radius);
  border: 1px solid var(--card-border);
}

.guide-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 500px;
}

.guide-table th {
  background: var(--card-bg);
  padding: 12px 16px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  text-align: left;
  border-bottom: 1px solid var(--card-border);
}

.guide-table td {
  padding: 12px 16px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--card-border);
}

.guide-table tbody tr:hover {
  background: rgba(247,147,26,0.03);
}

/* --- Author Box --- */
.author-box {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 24px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  margin: 48px 0;
}

.author-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--btc-orange);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  font-weight: 800;
  color: #000;
  flex-shrink: 0;
}

.author-info strong { display: block; font-size: 1rem; margin-bottom: 4px; }
.author-info p { color: var(--text-muted); font-size: 0.85rem; margin: 0; line-height: 1.5; }
.author-info a { font-size: 0.8rem; }

/* --- Related Articles --- */
.related-articles {
  padding: 80px 0;
  border-top: 1px solid var(--card-border);
}

.related-articles h2 {
  text-align: center;
  margin-bottom: 40px;
}

.related-articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.related-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
  text-decoration: none;
  display: block;
}

.related-card:hover {
  transform: translateY(-4px);
  border-color: rgba(247,147,26,0.3);
}

.related-card-img {
  height: 160px;
  overflow: hidden;
}

.related-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.related-card:hover .related-card-img img {
  transform: scale(1.05);
}

.related-card-body {
  padding: 20px;
}

.related-card-tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 50px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
  background: rgba(247,147,26,0.1);
  color: var(--btc-orange);
}

.related-card-body h3 {
  font-size: 1rem;
  margin-bottom: 8px;
  color: var(--text-primary);
  line-height: 1.4;
}

.related-card-body p {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin: 0;
}

/* --- Reading Progress Bar --- */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: var(--btc-orange);
  z-index: 1100;
  transition: width 0.1s linear;
}

/* --- Newsletter CTA (guide pages) --- */
.guide-newsletter {
  padding: 60px 0;
}

.guide-newsletter .newsletter-box {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
  padding: 48px 32px;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .guide-layout { grid-template-columns: 1fr; }
  .guide-sidebar { display: none; }
  .related-articles-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .guide-hero { min-height: 320px; padding: 120px 0 32px; }
  .guide-hero h1 { font-size: 1.6rem; }
  .related-articles-grid { grid-template-columns: 1fr; }
  .author-box { flex-direction: column; text-align: center; }
}