/* ============================================================
   FarmakoMed — Engineering Journal Styles
   ============================================================ */

/* ── Reading progress bar (fixed top) ────────────────────── */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-primary));
  z-index: 200;
  transition: width 80ms linear;
  border-radius: 0 2px 2px 0;
  pointer-events: none;
}

/* ── Journal landing hero ─────────────────────────────────── */
.journal-hero {
  background: linear-gradient(160deg, #0F172A 0%, #1E293B 55%, #0C2616 100%);
  padding: clamp(4.5rem, 11vw, 7.5rem) 0 clamp(3.5rem, 8vw, 6rem);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.journal-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 50%, rgba(34, 197, 94, 0.07) 0%, transparent 65%),
    radial-gradient(ellipse 60% 80% at 80% 30%, rgba(37, 99, 235, 0.10) 0%, transparent 65%);
  pointer-events: none;
}

.journal-hero-inner { position: relative; z-index: 1; }

.journal-hero-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 1.25rem;
}

.journal-hero h1 {
  color: #fff;
  font-size: clamp(2.5rem, 6vw, 4rem);
  letter-spacing: -0.028em;
  max-width: 760px;
  margin: 0 auto;
}

.journal-hero-subtitle {
  color: #94A3B8;
  font-size: clamp(1rem, 2.5vw, 1.1875rem);
  max-width: 560px;
  margin: 1.5rem auto 0;
  line-height: 1.75;
}

.journal-hero-cta {
  margin-top: 2.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.08);
  color: #E2E8F0;
  border-color: rgba(255, 255, 255, 0.15);
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.3);
  box-shadow: none;
}

/* ── Section label (journal variant) ─────────────────────── */
.journal-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.875rem;
  display: block;
}

/* ── Featured article card ────────────────────────────────── */
.featured-article {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  display: grid;
  grid-template-columns: 1fr 1fr;
  text-decoration: none;
  transition: box-shadow var(--transition), transform var(--transition);
}

.featured-article:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-3px);
  text-decoration: none;
}

.featured-article-visual {
  background: linear-gradient(160deg, #0F172A 0%, #1E293B 50%, #0C2616 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 340px;
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
}

.featured-article-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 70% at 30% 50%, rgba(34, 197, 94, 0.14) 0%, transparent 65%),
    radial-gradient(ellipse 50% 50% at 80% 30%, rgba(37, 99, 235, 0.16) 0%, transparent 65%);
  pointer-events: none;
}

.featured-article-body {
  padding: clamp(2rem, 4vw, 3rem);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1.125rem;
}

.featured-article-body h2 {
  font-size: clamp(1.375rem, 2.5vw, 1.875rem);
  color: var(--color-text);
  line-height: 1.25;
}

.featured-article-body .excerpt {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.featured-article-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-border);
}

.featured-article-meta span {
  display: flex;
  align-items: center;
  gap: 0.3125rem;
}

.featured-read-link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-top: 0.25rem;
}

@media (max-width: 780px) {
  .featured-article { grid-template-columns: 1fr; }
  .featured-article-visual { min-height: 220px; }
}

/* ── Article grid & cards ─────────────────────────────────── */
.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

@media (max-width: 900px) { .article-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 540px) { .article-grid { grid-template-columns: 1fr; } }

.article-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xs);
  display: flex;
  flex-direction: column;
  text-decoration: none;
  transition: box-shadow var(--transition), transform var(--transition);
}

.article-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
  text-decoration: none;
}

.article-card.coming-soon {
  opacity: 0.55;
  pointer-events: none;
  cursor: default;
}

.article-card-visual {
  height: 160px;
  background: linear-gradient(135deg, var(--color-primary-soft) 0%, var(--color-accent-soft) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  position: relative;
  overflow: hidden;
}

.article-card-visual.dark {
  background: linear-gradient(135deg, #1E293B, #0F172A);
}

.article-card-visual.dark-green {
  background: linear-gradient(135deg, #1E293B 0%, #064E3B 100%);
}

.article-card-body {
  padding: 1.375rem;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  flex: 1;
}

.article-card-body h3 {
  font-size: 1.0625rem;
  color: var(--color-text);
  line-height: 1.35;
}

.article-card-body p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.55;
  flex: 1;
}

.article-card-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-border);
  flex-wrap: wrap;
  margin-top: auto;
}

.coming-soon-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.625rem;
  border-radius: var(--radius-full);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: #FEF3C7;
  color: #92400E;
}

/* ── Category chip ────────────────────────────────────────── */
.category-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  text-decoration: none;
}

.category-chip:hover { text-decoration: none; opacity: 0.85; }

.category-chip.green {
  background: var(--color-accent-soft);
  color: #16a34a;
}

.category-chip.dark {
  background: rgba(37, 99, 235, 0.2);
  color: #93C5FD;
  border: 1px solid rgba(37, 99, 235, 0.3);
}

/* ── Topic tag cloud ──────────────────────────────────────── */
.topic-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
}

.topic-tag {
  display: inline-flex;
  align-items: center;
  padding: 0.4375rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  background: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition), box-shadow var(--transition);
  text-decoration: none;
}

.topic-tag:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
  text-decoration: none;
}

/* ── Journal search ───────────────────────────────────────── */
.journal-search {
  position: relative;
  max-width: 480px;
  margin: 0 auto 3rem;
}

.journal-search-input {
  width: 100%;
  padding: 0.9375rem 1.125rem 0.9375rem 3rem;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-lg);
  font-size: 0.9375rem;
  color: var(--color-text);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.journal-search-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-soft);
}

.journal-search-input::placeholder { color: var(--color-text-muted); }

.journal-search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  pointer-events: none;
  width: 18px;
  height: 18px;
}

/* ── Journal footer CTA bar ───────────────────────────────── */
.journal-cta-bar {
  background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
  border-radius: var(--radius-xl);
  padding: 3.5rem 2.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.journal-cta-bar::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 80% at 50% 120%, rgba(34, 197, 94, 0.10) 0%, transparent 70%);
  pointer-events: none;
}

.journal-cta-bar h2 { color: #fff; position: relative; z-index: 1; }
.journal-cta-bar p { color: #94A3B8; margin-top: 0.875rem; max-width: 520px; margin-left: auto; margin-right: auto; position: relative; z-index: 1; }
.journal-cta-bar .btn { position: relative; z-index: 1; margin-top: 1.75rem; }

/* ── Article page hero ────────────────────────────────────── */
.article-page-hero {
  background: linear-gradient(160deg, #0F172A 0%, #1E293B 65%, #0C2616 100%);
  padding: clamp(2.5rem, 6vw, 4.5rem) 0 clamp(3rem, 7vw, 5rem);
  position: relative;
  overflow: hidden;
}

.article-page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 80% at 80% 40%, rgba(37, 99, 235, 0.12) 0%, transparent 65%),
    radial-gradient(ellipse 40% 60% at 10% 60%, rgba(34, 197, 94, 0.08) 0%, transparent 60%);
  pointer-events: none;
}

.article-hero-inner {
  position: relative;
  z-index: 1;
  max-width: 820px;
}

.back-to-journal {
  display: inline-flex;
  align-items: center;
  gap: 0.4375rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: #64748B;
  text-decoration: none;
  margin-bottom: 1.75rem;
  transition: color var(--transition);
}

.back-to-journal:hover { color: #94A3B8; text-decoration: none; }
.back-to-journal svg { width: 16px; height: 16px; }

.article-page-hero h1 {
  color: #fff;
  font-size: clamp(1.875rem, 4.5vw, 3rem);
  margin-top: 1rem;
  line-height: 1.18;
}

.article-subtitle {
  color: #94A3B8;
  font-size: clamp(1rem, 2vw, 1.1875rem);
  margin-top: 1rem;
  line-height: 1.7;
  max-width: 640px;
}

.article-hero-meta {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.article-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.875rem;
  color: #64748B;
}

.article-meta-item svg { width: 14px; height: 14px; flex-shrink: 0; }

.difficulty-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.6875rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  background: rgba(245, 158, 11, 0.15);
  color: #FCD34D;
  border: 1px solid rgba(245, 158, 11, 0.25);
}

/* ── Article layout ───────────────────────────────────────── */
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 288px;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
  padding: clamp(2.5rem, 5vw, 4.5rem) 0;
}

@media (max-width: 1060px) {
  .article-layout { grid-template-columns: minmax(0, 1fr); }
}

/* ── Article prose ────────────────────────────────────────── */
.article-prose {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--color-text-secondary);
  overflow-wrap: break-word;
}

.article-prose h2 {
  font-size: clamp(1.3125rem, 3vw, 1.625rem);
  color: var(--color-text);
  margin-top: 3.25rem;
  margin-bottom: 1.125rem;
  padding-top: 0.75rem;
  border-top: 2px solid var(--color-border);
  scroll-margin-top: calc(var(--nav-height) + 1rem);
}

.article-prose h2:first-child { margin-top: 0; border-top: none; padding-top: 0; }

.article-prose h3 {
  font-size: 1.1875rem;
  color: var(--color-text);
  margin-top: 2.25rem;
  margin-bottom: 0.75rem;
  scroll-margin-top: calc(var(--nav-height) + 1rem);
}

.article-prose p {
  margin-bottom: 1.375rem;
  color: var(--color-text-secondary);
}

.article-prose p:last-child { margin-bottom: 0; }

.article-prose strong {
  color: var(--color-text);
  font-weight: 600;
}

.article-prose em {
  font-style: italic;
  color: var(--color-text);
}

.article-prose ul,
.article-prose ol {
  margin: 1rem 0 1.5rem;
  padding-left: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.article-prose ul { list-style: disc; }
.article-prose ol { list-style: decimal; }

.article-prose li { color: var(--color-text-secondary); padding-left: 0.25rem; }

.article-prose a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.article-prose a:hover { color: var(--color-primary-dark); }

.article-prose code {
  font-family: 'JetBrains Mono', 'Cascadia Code', 'Fira Code', monospace;
  font-size: 0.875em;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xs);
  padding: 0.125em 0.375em;
  color: var(--color-text);
}

.article-prose pre {
  background: #0F172A;
  border-radius: var(--radius-md);
  padding: 1.375rem 1.5rem;
  overflow-x: auto;
  margin: 1.75rem 0;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.article-prose pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.875rem;
  color: #E2E8F0;
  line-height: 1.65;
}

/* ── Callout blocks ───────────────────────────────────────── */
.journal-callout {
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.375rem;
  margin: 2.25rem 0;
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  border: 1px solid;
}

.callout-icon {
  font-size: 1.25rem;
  flex-shrink: 0;
  line-height: 1;
  margin-top: 2px;
}

.callout-body { flex: 1; min-width: 0; }

.callout-title {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.callout-body p {
  font-size: 0.9375rem !important;
  line-height: 1.65 !important;
  margin: 0 !important;
}

.callout-body ul {
  margin: 0.5rem 0 0 !important;
  padding-left: 1.25rem !important;
  gap: 0.3125rem !important;
  font-size: 0.9375rem;
}

/* Variants */
.callout-insight        { background: #EFF6FF; border-color: #BFDBFE; }
.callout-insight        .callout-title { color: #1D4ED8; }
.callout-insight        .callout-body p, .callout-insight .callout-body li { color: #1E40AF; }

.callout-key-takeaway   { background: #ECFDF5; border-color: #BBF7D0; }
.callout-key-takeaway   .callout-title { color: #15803D; }
.callout-key-takeaway   .callout-body p, .callout-key-takeaway .callout-body li { color: #166534; }

.callout-decision       { background: #F5F3FF; border-color: #DDD6FE; }
.callout-decision       .callout-title { color: #6D28D9; }
.callout-decision       .callout-body p, .callout-decision .callout-body li { color: #4C1D95; }

.callout-tradeoff       { background: #FFF7ED; border-color: #FED7AA; }
.callout-tradeoff       .callout-title { color: #C2410C; }
.callout-tradeoff       .callout-body p, .callout-tradeoff .callout-body li { color: #7C2D12; }

.callout-lesson         { background: #FEFCE8; border-color: #FEF08A; }
.callout-lesson         .callout-title { color: #A16207; }
.callout-lesson         .callout-body p, .callout-lesson .callout-body li { color: #713F12; }

.callout-arch           { background: #F0F9FF; border-color: #BAE6FD; }
.callout-arch           .callout-title { color: #0369A1; }
.callout-arch           .callout-body p, .callout-arch .callout-body li { color: #0C4A6E; }

.callout-perf           { background: #F0FDF4; border-color: #BBF7D0; }
.callout-perf           .callout-title { color: #15803D; }
.callout-perf           .callout-body p, .callout-perf .callout-body li { color: #14532D; }

.callout-privacy        { background: #EFF6FF; border-color: #93C5FD; border-width: 2px; }
.callout-privacy        .callout-title { color: #1D4ED8; }
.callout-privacy        .callout-body p, .callout-privacy .callout-body li { color: #1E3A8A; }

.callout-warning        { background: #FEF2F2; border-color: #FECACA; }
.callout-warning        .callout-title { color: #DC2626; }
.callout-warning        .callout-body p, .callout-warning .callout-body li { color: #7F1D1D; }

.callout-opinion        { background: #F8FAFC; border-color: #CBD5E1; }
.callout-opinion        .callout-title { color: #475569; }
.callout-opinion        .callout-body p, .callout-opinion .callout-body li { color: #334155; }

.callout-invisible      { background: #EEF2FF; border-color: #C7D2FE; }
.callout-invisible      .callout-title { color: #4338CA; }
.callout-invisible      .callout-body p, .callout-invisible .callout-body li { color: #3730A3; }

.callout-sustainability { background: #F0FDFA; border-color: #99F6E4; }
.callout-sustainability .callout-title { color: #0F766E; }
.callout-sustainability .callout-body p, .callout-sustainability .callout-body li { color: #115E59; }

.callout-future         { background: #ECFEFF; border-color: #A5F3FC; }
.callout-future         .callout-title { color: #0E7490; }
.callout-future         .callout-body p, .callout-future .callout-body li { color: #155E75; }

.callout-engineering    { background: #FFFBEB; border-color: #FDE68A; }
.callout-engineering    .callout-title { color: #B45309; }
.callout-engineering    .callout-body p, .callout-engineering .callout-body li { color: #92400E; }

.callout-references     { background: #FAFAF9; border-color: #E7E5E4; }
.callout-references     .callout-title { color: #57534E; }
.callout-references     .callout-body p, .callout-references .callout-body li { color: #44403C; }
.callout-references     .callout-body ol { margin: 0.5rem 0 0 !important; padding-left: 1.25rem !important; font-size: 0.9375rem; }
.callout-references     .callout-body ol li { margin-bottom: 0.375rem; }

.callout-quote {
  background: var(--color-bg-alt);
  border-color: var(--color-border);
  border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.callout-quote .callout-body p {
  font-size: 1.0625rem !important;
  font-style: italic;
  color: var(--color-text) !important;
}

/* ── Article sidebar ──────────────────────────────────────── */
.article-sidebar {
  position: sticky;
  top: calc(var(--nav-height) + 1.5rem);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-height: calc(100vh - var(--nav-height) - 3rem);
  overflow-y: auto;
  scrollbar-width: none;
}

.article-sidebar::-webkit-scrollbar { display: none; }

.sidebar-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.125rem 1.25rem;
  box-shadow: var(--shadow-xs);
}

.sidebar-heading {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 0.875rem;
}

/* TOC */
.toc-list { display: flex; flex-direction: column; gap: 1px; }

.toc-item {
  display: block;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  padding: 0.3125rem 0.5rem;
  border-radius: var(--radius-xs);
  border-left: 2px solid transparent;
  text-decoration: none;
  line-height: 1.4;
  transition: color var(--transition), background var(--transition), border-color var(--transition);
}

.toc-item:hover {
  color: var(--color-text);
  background: var(--color-bg-alt);
  text-decoration: none;
}

.toc-item.active {
  color: var(--color-primary);
  background: var(--color-primary-soft);
  border-left-color: var(--color-primary);
  font-weight: 500;
}

/* Reading progress in sidebar */
.sidebar-progress { display: flex; flex-direction: column; gap: 0.5rem; }

.sidebar-progress-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.sidebar-progress-track {
  height: 6px;
  background: var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.sidebar-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-accent), var(--color-primary));
  border-radius: var(--radius-full);
  width: 0%;
  transition: width 200ms ease;
}

/* Share */
.share-buttons { display: flex; gap: 0.5rem; flex-wrap: wrap; }

.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.4375rem 0.875rem;
  border-radius: var(--radius-md);
  font-size: 0.8125rem;
  font-weight: 500;
  border: 1px solid var(--color-border-strong);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
  text-decoration: none;
}

.share-btn:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
  text-decoration: none;
}

.share-btn svg { width: 14px; height: 14px; flex-shrink: 0; }

/* Mobile sidebar */
.mobile-sidebar-toggle {
  display: none;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text);
  cursor: pointer;
  width: 100%;
  margin-bottom: 0.5rem;
  box-shadow: var(--shadow-xs);
}

.mobile-sidebar-toggle svg {
  width: 18px;
  height: 18px;
  color: var(--color-text-muted);
  transition: transform var(--transition);
  flex-shrink: 0;
}

.mobile-sidebar-toggle.open svg { transform: rotate(180deg); }

.sidebar-inner {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

@media (max-width: 1060px) {
  .article-sidebar {
    position: static;
    max-height: none;
    overflow: visible;
    order: -1;
  }
  .mobile-sidebar-toggle { display: flex; }
  .sidebar-inner { display: none; }
  .sidebar-inner.open { display: flex; }
}

/* ── Article illustration ─────────────────────────────────── */
.article-illustration-wrap {
  background: linear-gradient(160deg, #0F172A 0%, #1E293B 60%, #0C2616 100%);
  border-radius: var(--radius-xl);
  padding: 3rem 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 3rem;
  min-height: 280px;
  position: relative;
  overflow: hidden;
}

.article-illustration-wrap::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 80% at 20% 50%, rgba(34, 197, 94, 0.10) 0%, transparent 60%),
    radial-gradient(ellipse 50% 60% at 80% 30%, rgba(37, 99, 235, 0.12) 0%, transparent 60%);
  pointer-events: none;
}

/* ── Author bar ───────────────────────────────────────────── */
.author-bar {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  margin-top: 3.5rem;
}

.author-avatar {
  width: 44px;
  height: 44px;
  min-width: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #fff;
  font-size: 1.0625rem;
}

.author-info { flex: 1; }
.author-name { font-size: 0.9375rem; font-weight: 600; color: var(--color-text); }
.author-role { font-size: 0.8125rem; color: var(--color-text-muted); margin-top: 1px; }

/* ── Key takeaways ────────────────────────────────────────── */
.key-takeaways {
  background: linear-gradient(135deg, #EFF6FF 0%, #ECFDF5 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  margin-top: 3.5rem;
}

.key-takeaways-header {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  margin-bottom: 1.75rem;
}

.key-takeaways-header h2 {
  font-size: 1.375rem;
  color: var(--color-text);
  margin: 0;
}

.key-takeaways-icon {
  width: 40px;
  height: 40px;
  min-width: 40px;
  background: var(--color-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
}

.key-takeaways-list {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

.key-takeaway-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.125rem 1.25rem;
  background: rgba(255, 255, 255, 0.75);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(4px);
}

.takeaway-num {
  width: 28px;
  height: 28px;
  min-width: 28px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8125rem;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}

.key-takeaway-item p {
  font-size: 0.9375rem;
  color: var(--color-text);
  font-weight: 500;
  line-height: 1.55;
  margin: 0;
}

/* ── Article end cards ────────────────────────────────────── */
.article-end-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 1.25rem;
  margin-top: 2.5rem;
}

@media (max-width: 640px) { .article-end-grid { grid-template-columns: minmax(0, 1fr); } }

/* End-card buttons carry long article titles — let them wrap instead of forcing overflow */
.article-end-card .btn { white-space: normal; }

.article-end-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.article-end-card.dark-card {
  background: linear-gradient(135deg, #0F172A, #1E293B);
  border-color: rgba(255, 255, 255, 0.07);
}

.article-end-card.dark-card h3 { color: #fff; }
.article-end-card.dark-card p  { color: #94A3B8; }

.article-end-icon {
  font-size: 1.75rem;
  line-height: 1;
}

/* ══════════════════════════════════════════════════════════
   APOTHECARY — Engineering Journal SVG icon fixes
   ══════════════════════════════════════════════════════════ */

/* Article card visual: size and colour SVG icons */
.article-card-visual .card-visual-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}
.article-card-visual.dark .card-visual-icon,
.article-card-visual.dark-green .card-visual-icon {
  color: #60A5FA;
}
.card-visual-icon svg { width: 48px; height: 48px; display: block; }

/* Article cards: left-border accent on hover (matches site cards) */
.article-card {
  border-left: 3px solid transparent;
  transition: border-left-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.article-card:hover { border-left-color: var(--color-primary); }

/* Callout icon: size SVG to match ex-emoji slot */
.callout-icon {
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  line-height: 1;
  margin-top: 2px;
}
.callout-icon svg { display: block; }

/* Key-takeaways icon: SVG inside coloured box */
.key-takeaways-icon svg { display: block; color: #fff; }

/* Article-end icon: size SVG to match ex-emoji */
.article-end-icon {
  font-size: 1.75rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}
.article-end-icon svg { display: block; }