/* ===== Blog CSS — Material Design v3 + Apple HIG hybrid =================== */

/* ─── CSS Variables ──────────────────────────────────────────────────────── */
:root {
  --blog-primary: #0066CC;
  --blog-primary-dark: #004FA3;
  --blog-primary-light: #E8F1FB;
  --blog-surface: #FFFFFF;
  --blog-surface-2: #F8F9FA;
  --blog-surface-3: #F1F3F5;
  --blog-border: #DEE2E6;
  --blog-text: #212529;
  --blog-text-secondary: #6C757D;
  --blog-text-muted: #ADB5BD;
  --blog-accent: #0066CC;
  --blog-radius: 12px;
  --blog-radius-sm: 12px;
  --blog-shadow: 0 2px 8px rgba(0,0,0,0.08);
  --blog-shadow-hover: 0 8px 24px rgba(0,0,0,0.12);
  --blog-max-content: 860px;
  --blog-container: 1200px;

  /* Callout colors */
  --callout-important-border: #E65C00;
  --callout-important-bg: #FFF5EE;
  --callout-tip-border: #0066CC;
  --callout-tip-bg: #EEF5FF;
  --callout-error-border: #D32F2F;
  --callout-error-bg: #FFEBEE;
  --callout-check-border: #2E7D32;
  --callout-check-bg: #E8F5E9;
  --callout-prompt-border: #6A1B9A;
  --callout-prompt-bg: #F3E5F5;
}

/* Dark mode handled by site-global filter:invert()+hue-rotate(180deg) on html.inverted */

/* ─── Container ──────────────────────────────────────────────────────────── */
.container-blog {
  max-width: var(--blog-container);
  margin: 0 auto;
  padding: 0 20px;
}

/* ─── Breadcrumbs ────────────────────────────────────────────────────────── */
.blog-breadcrumbs {
  padding: 12px 20px;
  font-size: 0.8rem;
}
.breadcrumb-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 4px;
  color: var(--blog-text-secondary);
}
.breadcrumb-list a {
  color: var(--blog-text-secondary);
  text-decoration: none;
}
.breadcrumb-list a:hover { color: var(--blog-primary); }
.breadcrumb-separator { color: var(--blog-text-muted); }

/* Hero breadcrumbs (white text inside blue hero) */
.blog-breadcrumbs-hero { margin-bottom: 20px; font-size: 0.8rem; }
.breadcrumb-list--hero { color: rgba(255,255,255,0.75); }
.breadcrumb-list--hero a { color: rgba(255,255,255,0.75); }
.breadcrumb-list--hero a:hover { color: #fff; }
.breadcrumb-list--hero .breadcrumb-separator { color: rgba(255,255,255,0.45); }

/* ─── Hero wrapper (aligns hero with content below via container-blog) ───── */
.blog-hero-wrapper { padding-top: 12px; }

/* ─── Hero ───────────────────────────────────────────────────────────────── */
.blog-hero {
  background: linear-gradient(to right, #0066CC 0%, #004FA3 55%, #1A237E 100%);
  color: #fff;
  padding: 40px 20px 36px;
  border-radius: var(--blog-radius);
  overflow: hidden;
  /* Width controlled by outer container-blog wrapper */
}
.blog-hero__title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  margin: 0 0 16px;
  letter-spacing: -0.02em;
  line-height: 1.15;
}
.blog-hero__desc {
  font-size: 1.1rem;
  margin: 0 0 28px;
  opacity: 0.9;
  max-width: 640px;
  line-height: 1.6;
}
.blog-hero__cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.btn-blog-primary {
  display: inline-flex;
  align-items: center;
  background: #fff;
  color: var(--blog-primary);
  font-weight: 600;
  padding: 11px 24px;
  border-radius: 24px;
  text-decoration: none;
  font-size: 0.95rem;
  transition: box-shadow 0.2s, transform 0.15s;
}
.btn-blog-primary:hover {
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
  transform: translateY(-1px);
  color: var(--blog-primary-dark);
}
.btn-blog-secondary {
  display: inline-flex;
  align-items: center;
  background: rgba(255,255,255,0.15);
  color: #fff;
  font-weight: 500;
  padding: 11px 24px;
  border-radius: 24px;
  text-decoration: none;
  font-size: 0.95rem;
  border: 1px solid rgba(255,255,255,0.4);
  backdrop-filter: blur(4px);
  transition: background 0.2s, transform 0.15s;
}
.btn-blog-secondary:hover {
  background: rgba(255,255,255,0.25);
  transform: translateY(-1px);
  color: #fff;
}

/* ─── Category filter chips ─────────────────────────────────────────────── */
.blog-category-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 16px 20px 8px;
}
.category-chip {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
  background: var(--blog-surface-3);
  color: var(--blog-text-secondary);
  text-decoration: none;
  border: 1px solid transparent;
  transition: all 0.15s;
  white-space: nowrap;
}
.category-chip:hover, .category-chip.active {
  background: var(--blog-primary);
  color: #fff;
  border-color: var(--blog-primary);
}

/* ─── Article grid ───────────────────────────────────────────────────────── */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  padding: 20px 20px 40px;
}
@media (max-width: 992px) { .blog-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 576px) { .blog-grid { grid-template-columns: 1fr; gap: 16px; } }

/* ─── Article card ───────────────────────────────────────────────────────── */
.blog-card {
  background: var(--blog-surface);
  border-radius: var(--blog-radius);
  overflow: hidden;
  box-shadow: var(--blog-shadow);
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.22s, transform 0.18s;
  border: 1px solid var(--blog-border);
}
.blog-card:hover {
  box-shadow: var(--blog-shadow-hover);
  transform: translateY(-3px);
}
.blog-card__image-link { display: block; }
.blog-card__image {
  width: 100%;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--blog-surface-3);
}
.blog-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}
.blog-card:hover .blog-card__image img { transform: scale(1.04); }
.blog-card__body {
  padding: 16px 18px 18px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.blog-card__meta-top {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}
.blog-card__category {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--blog-primary);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--blog-primary-light);
  border: 1px solid rgba(0,102,204,0.25);
  padding: 2px 9px;
  border-radius: 10px;
}
.blog-card__category:hover { background: var(--blog-primary); color: #fff; }
.blog-card__type {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  color: #6A1B9A;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: #F3E5F5;
  border: 1px solid rgba(106,27,154,0.25);
  padding: 2px 9px;
  border-radius: 10px;
}
.blog-card__title {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.4;
  margin: 0 0 8px;
}
.blog-card__title a {
  color: var(--blog-text);
  text-decoration: none;
}
.blog-card__title a:hover { color: var(--blog-primary); }
.blog-card__lead {
  font-size: 0.875rem;
  color: var(--blog-text-secondary);
  line-height: 1.55;
  margin: 0 0 12px;
  flex: 1;
}
.blog-card__footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: auto;
  font-size: 0.78rem;
  color: var(--blog-text);
  border-top: 1px solid var(--blog-border);
  padding-top: 10px;
  gap: 8px;
  flex-wrap: nowrap;
}
.blog-card__footer-left, .blog-card__footer-right {
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
}
.blog-card__footer-right { flex-shrink: 0; }
.blog-card__date::before { content: "📅 "; }
.blog-card__readtime::before { content: "⏱ "; }
.blog-card__views::before { content: "👀 "; }
.blog-card__author::before { content: "👤 "; }
.blog-card__author { white-space: nowrap; }
.blog-empty { grid-column: 1/-1; text-align: center; color: var(--blog-text-secondary); padding: 40px 0; }

/* ─── Pagination ─────────────────────────────────────────────────────────── */
.blog-pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  padding: 24px 0;
  flex-wrap: wrap;
}
.blog-pagination__btn, .blog-pagination__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 16px;
  border-radius: var(--blog-radius-sm);
  font-size: 0.9rem;
  text-decoration: none;
  color: var(--blog-text);
  border: 1px solid var(--blog-border);
  background: var(--blog-surface);
  transition: all 0.15s;
  min-width: 40px;
}
.blog-pagination__btn:hover, .blog-pagination__num:hover { background: var(--blog-primary-light); color: var(--blog-primary); border-color: var(--blog-primary); }
.blog-pagination__num--active { background: var(--blog-primary); color: #fff; border-color: var(--blog-primary); font-weight: 600; }
.blog-pagination__ellipsis { color: var(--blog-text-muted); padding: 0 4px; }

/* ─── Instruments block ──────────────────────────────────────────────────── */
.blog-instruments {
  background: var(--blog-surface-2);
  border-top: 1px solid var(--blog-border);
  border-bottom: 1px solid var(--blog-border);
  padding: 36px 0 40px;
  margin: 16px 0 0;
}
.blog-instruments__inner {
  text-align: center;
}
.blog-instruments__title {
  font-size: 1.4rem;
  font-weight: 700;
  margin: 0 0 24px;
  color: var(--blog-text);
}
.blog-instruments__grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  max-width: 960px;
  margin: 0 auto;
}
@media (max-width: 900px) { .blog-instruments__grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 600px) { .blog-instruments__grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 400px) { .blog-instruments__grid { grid-template-columns: 1fr; } }
.blog-instrument-card {
  display: block;
  background: var(--blog-surface);
  border-radius: var(--blog-radius-sm);
  padding: 18px 12px;
  text-decoration: none;
  color: var(--blog-text);
  border: 1px solid var(--blog-border);
  transition: all 0.18s;
  text-align: center;
}
.blog-instrument-card:hover { box-shadow: var(--blog-shadow-hover); transform: translateY(-2px); color: var(--blog-text); border-color: var(--blog-primary); }
.blog-instrument-card__icon { font-size: 1.8rem; margin-bottom: 8px; }
.blog-instrument-card__name { font-weight: 600; margin-bottom: 4px; font-size: 0.9rem; }
.blog-instrument-card__desc { font-size: 0.78rem; color: var(--blog-text-secondary); }

/* ─── Popular articles ───────────────────────────────────────────────────── */
.blog-popular {
  padding: 32px 20px 24px;
}
.blog-popular__header {
  margin-bottom: 16px;
}
.blog-popular__pill {
  display: inline-block;
  background: var(--blog-primary);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 4px 14px;
  border-radius: 12px;
  text-transform: uppercase;
}
.blog-popular__grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
}
@media (max-width: 900px) { .blog-popular__grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 576px) {
  .blog-popular__grid {
    display: flex;
    overflow-x: auto;
    gap: 12px;
    padding-bottom: 8px;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
  }
}
.blog-popular__card {
  display: block;
  text-decoration: none;
  color: var(--blog-text);
  border-radius: var(--blog-radius-sm);
  overflow: hidden;
  background: var(--blog-surface);
  border: 1px solid var(--blog-border);
  transition: all 0.18s;
  scroll-snap-align: start;
}
@media (max-width: 576px) { .blog-popular__card { flex: 0 0 160px; } }
.blog-popular__card:hover { box-shadow: var(--blog-shadow-hover); transform: translateY(-2px); color: var(--blog-text); }
.blog-popular__card-image { width: 100%; aspect-ratio: 16/9; overflow: hidden; background: var(--blog-surface-3); }
.blog-popular__card-image--empty { background: linear-gradient(135deg, var(--blog-primary-light), var(--blog-surface-3)); }
.blog-popular__card-image img { width: 100%; height: 100%; object-fit: cover; }
.blog-popular__card-body { padding: 10px 12px 12px; }
.blog-popular__card-title { font-size: 0.82rem; font-weight: 600; line-height: 1.4; margin-bottom: 6px; }
.blog-popular__card-views { font-size: 0.75rem; color: var(--blog-text-secondary); }

/* ─── Category page header ───────────────────────────────────────────────── */
.blog-cat-header { padding: 32px 20px 16px; }
.blog-cat-title { font-size: clamp(1.5rem, 3vw, 2.2rem); font-weight: 700; margin: 0 0 10px; }
.blog-cat-desc { color: var(--blog-text-secondary); max-width: 700px; margin: 0; }
.section-heading { font-size: 1.5rem; font-weight: 700; margin: 0 0 20px; padding: 24px 0 0; }

/* ─── Author profile ─────────────────────────────────────────────────────── */
.author-profile { padding: 32px 20px; }
.author-profile__inner {
  display: flex;
  gap: 24px;
  align-items: flex-start;
  background: var(--blog-surface);
  border-radius: var(--blog-radius);
  padding: 24px;
  box-shadow: var(--blog-shadow);
  border: 1px solid var(--blog-border);
}
@media (max-width: 576px) { .author-profile__inner { flex-direction: column; align-items: center; text-align: center; } }
.author-profile__photo { width: 100px; height: 100px; border-radius: 50%; object-fit: cover; flex-shrink: 0; }
.author-profile__name { font-size: 1.5rem; font-weight: 700; margin: 0 0 4px; }
.author-profile__job { color: var(--blog-text-secondary); font-size: 0.9rem; margin-bottom: 4px; }
.author-profile__spec { font-size: 0.85rem; color: var(--blog-primary); margin-bottom: 8px; }
.author-profile__bio { margin: 8px 0 0; line-height: 1.6; }
.author-profile__full-bio { margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--blog-border); line-height: 1.7; }

/* ─── Article layout (TOC + content) ────────────────────────────────────── */
.article-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 28px;
  align-items: start;
  padding: 24px 20px 60px;
  max-width: 1160px;
}
@media (max-width: 1024px) { .article-layout { grid-template-columns: 1fr; } }

/* ─── TOC ────────────────────────────────────────────────────────────────── */
.article-toc {
  position: sticky;
  top: 112px;
  background: var(--blog-surface);
  border: 1px solid var(--blog-border);
  border-radius: var(--blog-radius);
  padding: 0;
  overflow: hidden;
  max-height: calc(100vh - 132px);
  overflow-y: auto;
}
@media (max-width: 1024px) {
  .article-toc { position: static; max-height: none; border-radius: var(--blog-radius); }
}
.toc-header { padding: 12px 16px; border-bottom: 1px solid var(--blog-border); }
.toc-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  background: none;
  border: none;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--blog-text);
  cursor: pointer;
  padding: 0;
  gap: 8px;
}
.toc-toggle-icon { transition: transform 0.2s; flex-shrink: 0; }
.toc-toggle[aria-expanded="false"] .toc-toggle-icon { transform: rotate(-90deg); }
.toc-list { padding: 8px 0; }
.toc-list.collapsed { display: none; }
.toc-link {
  display: block;
  padding: 5px 16px;
  font-size: 0.82rem;
  color: var(--blog-text-secondary);
  text-decoration: none;
  line-height: 1.4;
  transition: all 0.15s;
  border-left: 2px solid transparent;
}
.toc-link:hover { color: var(--blog-primary); background: var(--blog-primary-light); }
.toc-link.active { color: var(--blog-primary); border-left-color: var(--blog-primary); font-weight: 500; background: var(--blog-primary-light); }
.toc-level-3 { padding-left: 28px; font-size: 0.78rem; }

/* ─── Article hero (light, Apple-like) ───────────────────────────────────── */
.article-hero {
  background: linear-gradient(180deg, #ffffff 0%, #f2f5fa 100%);
  color: #1d1d1f;
  border-radius: var(--blog-radius);
  border: 1px solid rgba(0,0,0,0.08);
  box-shadow: 0 2px 24px rgba(0,0,0,0.06), inset 0 1px 0 rgba(255,255,255,0.9);
  /* Width controlled by outer container-blog wrapper */
}
/* Breadcrumbs: dark inside light hero */
.article-hero .breadcrumb-list--hero { color: #6e6e73; }
.article-hero .breadcrumb-list--hero a { color: #6e6e73; }
.article-hero .breadcrumb-list--hero a:hover { color: var(--blog-primary); }
.article-hero .breadcrumb-list--hero .breadcrumb-separator { color: #aeaeb2; }
.article-hero__inner {
  display: flex;
  align-items: center; /* vertical center — fixes CTA alignment (task 5) */
  gap: 24px;
  padding: 32px 20px 28px;
}
.article-hero__content { flex: 1; min-width: 0; }
.article-hero__cta-col {
  flex-shrink: 0;
  width: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.article-hero__cta-btn {
  display: block;
  background: var(--blog-primary);
  color: #fff;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 10px 16px;
  border-radius: 10px;
  text-decoration: none;
  text-align: center;
  line-height: 1.4;
  transition: background 0.15s, box-shadow 0.15s;
  box-shadow: 0 2px 8px rgba(0,102,204,0.3);
}
.article-hero__cta-btn:hover { background: var(--blog-primary-dark); color: #fff; box-shadow: 0 4px 14px rgba(0,102,204,0.35); }
@media (max-width: 768px) {
  .article-hero__inner { flex-direction: column; gap: 12px; }
  .article-hero__cta-col { width: 100%; padding-top: 0; }
  .article-hero__cta-btn { display: inline-block; width: auto; padding: 8px 20px; font-size: 0.85rem; }
}
.article-hero__pills {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.article-hero__category-pill {
  display: inline-block;
  background: var(--blog-primary-light);
  color: var(--blog-primary);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  padding: 3px 11px;
  border-radius: 10px;
  text-decoration: none;
  border: 1px solid rgba(0,102,204,0.2);
}
.article-hero__category-pill:hover { background: var(--blog-primary); color: #fff; }
.article-hero__type-pill {
  display: inline-block;
  background: #F3E5F5;
  color: #6A1B9A;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  padding: 3px 11px;
  border-radius: 10px;
  border: 1px solid rgba(106,27,154,0.2);
}
.article-hero__title {
  font-size: clamp(1.5rem, 2.8vw, 2.2rem);
  font-weight: 700;
  line-height: 1.2;
  margin: 0 0 12px;
  letter-spacing: -0.02em;
  color: #1d1d1f;
  max-width: 820px;
}
.article-hero__lead {
  font-size: 1rem;
  color: #6e6e73;
  line-height: 1.6;
  margin: 0;
  max-width: 700px;
}

/* ─── Article main (text box) ────────────────────────────────────────────── */
.article-main {
  min-width: 0;
  background: var(--blog-surface);
  border-radius: var(--blog-radius);
  padding: 28px 32px 32px;
  box-shadow: var(--blog-shadow);
  border: 1px solid var(--blog-border);
}
/* Keep old class hidden (no longer in template but guard against stale cache) */
.article-info-block { display: contents; }
.article-meta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
  margin-bottom: 16px;
}
.article-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.82rem;
  color: var(--blog-text-secondary);
}
.article-meta-author { color: var(--blog-primary); text-decoration: none; }
.article-meta-author:hover { text-decoration: underline; }

/* ─── Star rating ────────────────────────────────────────────────────────── */
.article-meta-rating {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
/* ─── Bottom rating + share block ────────────────────────────────────────── */
.article-bottom-rating {
  background: var(--blog-surface-2);
  border-radius: var(--blog-radius);
  padding: 24px;
  margin: 40px 0 0;
  border: 1px solid var(--blog-border);
  display: flex;
  align-items: flex-start;
  gap: 24px;
  flex-wrap: wrap;
}
.article-bottom-rating__left {
  flex: 1;
  min-width: 0;
}
.article-bottom-rating__right {
  flex-shrink: 0;
}
.article-bottom-rating__right .article-share { margin-top: 6px; }
@media (max-width: 600px) {
  .article-bottom-rating { flex-direction: column; gap: 16px; }
  .article-bottom-rating__right { width: 100%; }
  .article-bottom-rating__right .article-share { flex-wrap: wrap; }
}

.article-divider {
  border: none;
  border-top: 1px solid var(--blog-border);
  margin: 0 0 28px;
}
.rating-prompt { font-weight: 600; margin: 0; }
.rating-result { font-size: 0.82rem; color: var(--blog-text-secondary); margin: 0; }
.rating-voted { font-size: 0.82rem; color: #2E7D32; }
.stars-row { display: flex; gap: 3px; }
.star-btn {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: #D0D0D0;
  cursor: pointer;
  padding: 0 1px;
  line-height: 1;
  vertical-align: middle;
  transition: color 0.12s, transform 0.1s;
}
.star-btn.star-sm { font-size: 1rem; padding: 0 1px; }
.star-btn.star-filled, .star-btn.star-hovered { color: #F5A623; }
.star-btn:hover { transform: scale(1.2); color: #F5A623; }
.star-btn:disabled { cursor: default; }
.rating-summary { font-size: 0.82rem; color: var(--blog-text-secondary); }
.rating-voted { font-size: 0.85rem; color: var(--blog-text-secondary); margin-top: 6px; }

/* ─── Share buttons ──────────────────────────────────────────────────────── */
.article-share {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 8px;
}
.share-label { font-size: 0.82rem; color: var(--blog-text-secondary); }
.share-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--blog-surface-3);
  color: var(--blog-text-secondary);
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all 0.15s;
}
.share-btn:hover { transform: scale(1.1); }
.share-tg:hover { background: #2CA5E0; color: #fff; }
.share-vk:hover { background: #4C75A3; color: #fff; }
.share-wa:hover { background: #25D366; color: #fff; }
.share-email:hover { background: var(--blog-primary); color: #fff; }
.share-copy:hover { background: #6C757D; color: #fff; }
.share-copy.copied { background: #2E7D32; color: #fff; }
.share-max:hover { background: #0066CC; color: #fff; }

/* ─── Article right column (flex wrapper for stacked boxes) ─────────────── */
.article-right {
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-width: 0;
}
/* Meta stats card — standalone box, centered */
.article-info-meta {
  background: var(--blog-surface-2);
  border-radius: var(--blog-radius);
  border: 1px solid var(--blog-border);
  box-shadow: var(--blog-shadow);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px 18px;
  padding: 12px 20px;
  text-align: center;
}
/* Author card — same visual as article-main */
.article-author-card {
  background: var(--blog-surface);
  border-radius: var(--blog-radius);
  border: 1px solid var(--blog-border);
  box-shadow: var(--blog-shadow);
  /* overflow stays visible so popovers (share / rating) can escape the card edges */
}
/* Author + meta + actions row (inside author card) */
.article-info-author {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 18px 24px;
}
.article-author-left {
  display: flex;
  gap: 14px;
  align-items: center;
  flex: 0 0 auto;       /* auto width, no shrinking, no growing */
  white-space: nowrap;  /* keep label/name/job on their own lines without wrapping */
}
.article-author-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  justify-content: space-between;
  gap: 22px;              /* gap between meta row and actions row — matches 3-line left column height */
  flex: 1 1 0;
  min-width: 0;
}
/* Row 1: meta inline text — wraps to next line if too narrow */
.article-author-meta {
  font-size: 0.82rem;
  color: var(--blog-text-secondary);
  line-height: 1.5;
  text-align: right;
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  align-items: center;
  gap: 0 6px;
}
.article-author-meta .meta-piece { white-space: nowrap; }
.article-author-meta .meta-sep { color: var(--blog-border); }
.article-author-meta .article-meta-rating { display: inline-flex; align-items: center; gap: 4px; }
.article-author-meta .rating-value { color: inherit; font-weight: inherit; }
/* Row 2: action links + share popover trigger */
.article-author-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 16px;
  flex-wrap: wrap;
}
.article-action-link {
  font-size: 0.85rem;
  color: var(--blog-primary);
  text-decoration: none;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  font-family: inherit;
  white-space: nowrap;
  transition: opacity 0.15s;
}
.article-action-link:hover { text-decoration: underline; opacity: 0.85; }

/* Share popover */
.share-popover-wrapper { position: relative; display: inline-block; }
.share-popover {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--blog-surface);
  border: 1px solid var(--blog-border);
  border-radius: 12px;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.14);
  padding: 10px;
  display: flex;
  gap: 8px;
  opacity: 0;
  transform: translateY(-6px) scale(0.96);
  transform-origin: top right;
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.18s ease;
  z-index: 50;
  white-space: nowrap;
}
.share-popover.open {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}
.share-popover .share-btn { width: 34px; height: 34px; }

/* Rating popover (triggered by ⭐ meta display) */
.rating-popover-wrapper { position: relative; display: inline-block; }
.rating-popover-trigger {
  background: none;
  border: none;
  padding: 0;
  font: inherit;
  color: inherit;
  cursor: pointer;
  transition: opacity 0.15s;
}
.rating-popover-trigger:hover { opacity: 0.75; }
.rating-popover {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--blog-surface);
  border: 1px solid var(--blog-border);
  border-radius: 12px;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.14);
  padding: 12px 16px;
  opacity: 0;
  transform: translateY(-6px) scale(0.96);
  transform-origin: top right;
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.18s ease;
  z-index: 50;
  white-space: nowrap;
  text-align: center;
}
.rating-popover.open {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}
.rating-popover-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--blog-text);
  margin-bottom: 6px;
}
.rating-popover .stars-row { justify-content: center; }
.rating-popover-info {
  font-size: 0.78rem;
  color: var(--blog-text-secondary);
  margin-top: 6px;
}
.rating-popover-note {
  font-size: 0.78rem;
  color: #2E7D32;
  margin-top: 4px;
}

/* Mobile: stack author left/right vertically */
@media (max-width: 600px) {
  .article-info-author { flex-direction: column; padding: 16px; gap: 14px; align-items: stretch; }
  .article-author-left {
    flex: 0 0 auto;
    justify-content: center;
    text-align: center;
    white-space: normal;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--blog-border);
  }
  .article-author-left .author-info { text-align: center; }
  .article-author-right { align-items: center; gap: 10px; }
  .article-author-meta { justify-content: center; text-align: center; }
  .article-author-actions { justify-content: center; gap: 6px 14px; }
  .share-popover, .rating-popover { right: auto; left: 50%; transform: translate(-50%, -6px) scale(0.96); transform-origin: top center; }
  .share-popover.open, .rating-popover.open { transform: translate(-50%, 0) scale(1); }
}
/* Keep old class for backward compat */
.article-author-block { display: none; }
.author-photo { width: 52px; height: 52px; border-radius: 50%; object-fit: cover; flex-shrink: 0; }
.author-label-text {
  font-size: 0.72rem;
  color: var(--blog-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 700;
  margin-bottom: 3px;
}
.author-name-plain {
  font-weight: 700;
  color: var(--blog-text);
  font-size: 0.95rem;
  margin-bottom: 2px;
}
.author-name { font-weight: 600; color: var(--blog-primary); text-decoration: none; font-size: 0.95rem; }
.author-name:hover { text-decoration: underline; }
.author-job { font-size: 0.8rem; color: var(--blog-text-secondary); margin-top: 2px; }
.author-bio { font-size: 0.85rem; color: var(--blog-text-secondary); margin-top: 6px; line-height: 1.5; }
.author-actions { display: flex; align-items: center; gap: 8px; flex-wrap: nowrap; }
.author-all-articles-link { font-size: 0.82rem; color: var(--blog-primary); text-decoration: none; white-space: nowrap; }
.author-all-articles-link:hover { text-decoration: underline; }
.btn-author-question {
  display: inline-block;
  font-size: 0.82rem;
  background: var(--blog-primary-light);
  color: var(--blog-primary);
  padding: 5px 14px;
  border-radius: 16px;
  text-decoration: none;
  font-weight: 500;
  transition: background 0.15s, color 0.15s;
  white-space: nowrap;
  border: 1px solid rgba(0,102,204,0.2);
}
.btn-author-question:hover { background: var(--blog-primary); color: #fff; }

/* Author profile page actions */
.author-profile__actions { margin-top: 16px; }


/* ─── Expert block ───────────────────────────────────────────────────────── */
.article-expert-block {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--callout-check-bg);
  border-left: 3px solid var(--callout-check-border);
  border-radius: 0 var(--blog-radius-sm) var(--blog-radius-sm) 0;
  padding: 10px 16px;
  margin-bottom: 24px;
  font-size: 0.87rem;
}
.expert-label { font-weight: 600; color: #2E7D32; white-space: nowrap; }
.expert-checked { color: var(--blog-text-muted); margin-left: 6px; }

/* ─── Article body typography ────────────────────────────────────────────── */
.article-body {
  line-height: 1.75;
  font-size: 1.03rem;
  color: var(--blog-text);
}
.article-body h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 36px 0 14px;
  line-height: 1.25;
  letter-spacing: -0.01em;
  scroll-margin-top: 80px;
}
.article-body h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin: 28px 0 12px;
  scroll-margin-top: 80px;
}
.article-body > :first-child { margin-top: 0 !important; }
.article-body p { margin: 0 0 16px; }
.article-body ul, .article-body ol { margin: 0 0 16px; padding-left: 24px; }
.article-body li { margin-bottom: 4px; }
.article-body blockquote {
  border-left: 3px solid var(--blog-primary);
  background: var(--blog-primary-light);
  margin: 20px 0;
  padding: 14px 18px;
  border-radius: 0 var(--blog-radius-sm) var(--blog-radius-sm) 0;
  color: var(--blog-text);
  font-style: italic;
}
.article-body a { color: var(--blog-primary); }
.article-body a:hover { text-decoration: underline; }
.article-body strong { font-weight: 600; }
.article-body code {
  background: var(--blog-surface-3);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.88em;
  font-family: 'SFMono-Regular', Consolas, monospace;
}
.article-body pre {
  background: var(--blog-surface-3);
  border-radius: var(--blog-radius-sm);
  padding: 16px;
  overflow-x: auto;
  margin: 20px 0;
}
.article-body pre code { background: none; padding: 0; }

/* ─── Figure / image ─────────────────────────────────────────────────────── */
.article-figure {
  margin: 24px 0;
  text-align: center;
}
.article-figure img {
  max-width: 100%;
  border-radius: var(--blog-radius-sm);
  box-shadow: var(--blog-shadow);
}
.article-figure figcaption {
  font-size: 0.82rem;
  color: var(--blog-text-secondary);
  margin-top: 8px;
  font-style: italic;
}

/* ─── Table ──────────────────────────────────────────────────────────────── */
.table-wrapper {
  overflow-x: auto;
  margin: 20px 0;
  border-radius: var(--blog-radius-sm);
  border: 1px solid var(--blog-border);
}
.table-wrapper table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}
.table-wrapper th {
  background: var(--blog-surface-3);
  font-weight: 600;
  padding: 10px 14px;
  border-bottom: 2px solid var(--blog-border);
  text-align: left;
}
.table-wrapper td { padding: 9px 14px; border-bottom: 1px solid var(--blog-border); }
.table-wrapper tr:nth-child(even) td { background: var(--blog-surface-2); }
.table-wrapper tr:last-child td { border-bottom: none; }

/* ─── Callout blocks ─────────────────────────────────────────────────────── */
.article-callout {
  display: flex;
  gap: 14px;
  border-radius: var(--blog-radius-sm);
  padding: 16px 18px;
  margin: 22px 0;
  align-items: flex-start;
}
.callout-important { background: linear-gradient(to right, rgba(230,92,0,0.13) 0%, rgba(230,92,0,0.04) 100%); }
.callout-tip       { background: linear-gradient(to right, rgba(0,102,204,0.12) 0%, rgba(0,102,204,0.04) 100%); }
.callout-error     { background: linear-gradient(to right, rgba(211,47,47,0.13) 0%, rgba(211,47,47,0.04) 100%); }
.callout-check     { background: linear-gradient(to right, rgba(46,125,50,0.12) 0%, rgba(46,125,50,0.04) 100%); }
.callout-prompt    { background: linear-gradient(to right, rgba(106,27,154,0.12) 0%, rgba(106,27,154,0.04) 100%); }
.callout-icon { font-size: 1.4rem; line-height: 1; flex-shrink: 0; margin-top: 2px; }
.callout-body { flex: 1; min-width: 0; }
.callout-body strong { display: block; margin-bottom: 5px; font-size: 0.9rem; }
.callout-body p { margin: 0; font-size: 0.92rem; line-height: 1.6; }
.callout-prompt .prompt-text {
  background: rgba(0,0,0,0.06);
  border-radius: 6px;
  padding: 10px 12px;
  font-size: 0.85rem;
  margin: 6px 0 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: 'SFMono-Regular', Consolas, monospace;
}

/* ─── Before/after ───────────────────────────────────────────────────────── */
.before-after {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 22px 0;
  align-items: stretch;
}
@media (max-width: 576px) { .before-after { grid-template-columns: 1fr; } }
.ba-col {
  border-radius: var(--blog-radius-sm);
  overflow: hidden;
  border: 1px solid var(--blog-border);
  display: flex;
  flex-direction: column;
}
.ba-label {
  padding: 7px 14px;
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  flex-shrink: 0;
}
.ba-before .ba-label { background: #FFEBEE; color: #C62828; }
.ba-after  .ba-label { background: #E8F5E9; color: #2E7D32; }
.ba-text { padding: 12px 14px; background: var(--blog-surface); font-size: 0.9rem; line-height: 1.6; flex: 1; }

/* ─── Quote block ────────────────────────────────────────────────────────── */
.article-quote {
  position: relative;
  margin: 26px 0;
  padding: 22px 28px 20px 64px;
  background: linear-gradient(135deg, rgba(0, 102, 204, 0.05) 0%, rgba(0, 102, 204, 0.02) 100%);
  border-radius: var(--blog-radius-sm);
}
.article-quote .quote-mark {
  position: absolute;
  top: 4px;
  left: 18px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 4.5rem;
  line-height: 1;
  color: var(--blog-primary);
  opacity: 0.35;
  user-select: none;
  pointer-events: none;
}
.article-quote .quote-body {
  margin: 0;
  padding: 0;
  border: 0;
  background: none;
}
.article-quote .quote-body p {
  margin: 0;
  font-size: 1.02rem;
  line-height: 1.6;
  font-style: italic;
  color: var(--blog-text);
}
.article-quote .quote-attribution {
  margin-top: 12px;
  font-size: 0.86rem;
  color: var(--blog-text-secondary);
  font-style: normal;
  text-align: right;
}
@media (max-width: 576px) {
  .article-quote { padding: 18px 18px 16px 48px; }
  .article-quote .quote-mark { left: 12px; font-size: 3.5rem; }
  .article-quote .quote-body p { font-size: 0.96rem; }
}

/* ─── CTA block ──────────────────────────────────────────────────────────── */
.article-cta {
  background: linear-gradient(135deg, #0066CC 0%, #004FA3 100%);
  border-radius: var(--blog-radius);
  padding: 28px 32px;
  margin: 30px 0;
  color: #fff;
}
.cta-title { font-size: 1.2rem; font-weight: 700; margin: 0 0 8px; }
.cta-text { margin: 0 0 18px; opacity: 0.9; font-size: 0.95rem; }
.cta-btn {
  display: inline-block;
  background: #fff;
  color: var(--blog-primary);
  font-weight: 700;
  padding: 11px 26px;
  border-radius: 24px;
  text-decoration: none;
  font-size: 0.95rem;
  transition: box-shadow 0.2s;
}
.cta-btn:hover { box-shadow: 0 4px 16px rgba(0,0,0,0.18); color: var(--blog-primary-dark); }

/* ─── FAQ ────────────────────────────────────────────────────────────────── */
.article-faq {
  border: 1px solid var(--blog-border);
  border-radius: var(--blog-radius);
  margin: 30px 0;
  overflow: hidden;
}
.article-faq h2 {
  font-size: 1.25rem;
  font-weight: 700;
  padding: 18px 22px;
  margin: 0;
  background: var(--blog-surface-2);
  border-bottom: 1px solid var(--blog-border);
}
.faq-item { border-bottom: 1px solid var(--blog-border); }
.faq-item:last-child { border-bottom: none; }
.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  padding: 14px 20px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--blog-text);
  transition: background 0.15s;
  gap: 12px;
}
.faq-question:hover { background: var(--blog-surface-2); }
.faq-question::after {
  content: '+';
  font-size: 1.2rem;
  line-height: 1;
  color: var(--blog-primary);
  flex-shrink: 0;
  transition: transform 0.2s;
}
.faq-item.open .faq-question::after { content: '−'; }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.faq-item.open .faq-answer { max-height: 600px; }
.faq-answer p {
  padding: 4px 20px 16px;
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--blog-text-secondary);
}

/* ─── Sources ────────────────────────────────────────────────────────────── */
.article-sources {
  background: var(--blog-surface-2);
  border-radius: var(--blog-radius-sm);
  padding: 18px 22px;
  margin: 28px 0;
  border: 1px solid var(--blog-border);
}
.article-sources h3 {
  font-size: 1rem;
  font-weight: 700;
  margin: 0 0 12px;
  color: var(--blog-text);
}
.article-sources ul { margin: 0; padding-left: 20px; }
.article-sources li { margin-bottom: 4px; font-size: 0.88rem; }
.article-sources a { color: var(--blog-primary); }

/* ─── Related articles ───────────────────────────────────────────────────── */
.article-related { margin-top: 40px; padding-top: 32px; border-top: 1px solid var(--blog-border); }
.related-title { font-size: 1.3rem; font-weight: 700; margin: 0 0 18px; }
.related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
@media (max-width: 576px) { .related-grid { grid-template-columns: 1fr; } }
.related-card {
  display: block;
  text-decoration: none;
  color: var(--blog-text);
  border-radius: var(--blog-radius-sm);
  overflow: hidden;
  background: var(--blog-surface);
  border: 1px solid var(--blog-border);
  transition: all 0.18s;
}
.related-card:hover { box-shadow: var(--blog-shadow-hover); transform: translateY(-2px); color: var(--blog-text); }
.related-card__image { width: 100%; aspect-ratio: 16/9; overflow: hidden; background: var(--blog-surface-3); }
.related-card__image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.25s; }
.related-card:hover .related-card__image img { transform: scale(1.04); }
.related-card__title { padding: 12px 14px; font-size: 0.9rem; font-weight: 600; line-height: 1.4; }

/* ─── Responsive tweaks ──────────────────────────────────────────────────── */
@media (max-width: 768px) {
  /* Use longhand to preserve padding-top from .blog-hero-wrapper */
  .container-blog { padding-left: 16px; padding-right: 16px; }
  .blog-instruments { padding: 28px 0 32px; }
  .blog-category-filter { padding-top: 16px; margin-bottom: 4px; }
  .blog-grid.container-blog { padding-top: 12px; }
  .blog-popular { padding-top: 20px; }
  .article-layout { padding: 12px 16px 40px; gap: 12px; }
  .article-main { padding: 20px 16px 24px; }
  .blog-card__body { padding: 12px 14px 14px; }
  .article-share { flex-wrap: wrap; }
  .author-profile__inner { flex-direction: column; align-items: center; text-align: center; }
}

@media (max-width: 576px) {
  .blog-hero__title { font-size: 1.7rem; }
  .article-hero__title { font-size: 1.4rem; }
}

@media (max-width: 480px) {
  .article-share { gap: 6px; }
  .blog-popular__grid { grid-template-columns: repeat(2, 1fr); }
}