/* ---------- Theme tokens (mirror src/index.css) ---------- */
:root,
[data-theme="dark"] {
  --bg: #15110C;
  --surface: #1F1A14;
  --surface-2: #2A241B;
  --fg: #FAF5E8;
  --fg-dim: #B8B0A0;
  --fg-muted: #8A8275;
  --fg-faint: #5C564A;
  --line: rgba(250, 245, 232, 0.10);
  --line-strong: rgba(250, 245, 232, 0.22);
  --accent: #F5BD00;
  --accent-2: #FF7A0F;
  --accent-text: #F5BD00;
  --accent-ink: #15110C;
}
[data-theme="light"] {
  --bg: #FFFFFF;
  --surface: #FAFAFA;
  --surface-2: #F1F1F1;
  --fg: #15110C;
  --fg-dim: #555550;
  --fg-muted: #888880;
  --fg-faint: #BBBBB5;
  --line: rgba(21, 17, 12, 0.08);
  --line-strong: rgba(21, 17, 12, 0.20);
  --accent: #F5BD00;
  --accent-2: #C2410C;
  --accent-text: #C2410C;
  --accent-ink: #15110C;
}

/* ---------- Reset / base ---------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: Inter, system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
  line-height: 1.65;
}
a { color: var(--accent-text); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  max-width: 1500px;
  margin: 0 auto;
  padding: 0 24px;
}
@media (max-width: 640px) { .container { padding: 0 16px; } }

/* ---------- Read progress bar ---------- */
.read-progress {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  z-index: 100;
  transition: width 0.05s linear;
}

/* ---------- Header ---------- */
.blog-header {
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 50;
}
.blog-header-inner {
  max-width: 1500px;
  margin: 0 auto;
  padding: 0 24px;
  min-height: 64px;             /* matches React Header.tsx + Cabinet.tsx (h-16) */
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.blog-logo {
  font-weight: 800;
  font-size: 20px;
  line-height: 1.4;            /* matches Tailwind text-xl line-height (1.75rem / 1.25rem) */
  letter-spacing: -0.025em;
  color: var(--fg);
  display: inline-flex;
  align-items: baseline;
}
.blog-logo span {
  background: var(--accent);
  color: var(--accent-ink);
  padding: 0 8px;              /* no vertical padding — height comes from line-height alone */
  border-radius: 6px;
  margin-left: 2px;
}
.blog-nav {
  font-size: 14px;
  color: var(--fg-dim);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.blog-nav:hover { color: var(--fg); text-decoration: none; }

/* ---------- Listing page ---------- */
.blog-listing {
  padding: 48px 0 64px;
}
.blog-listing-head {
  text-align: center;
  margin-bottom: 40px;
}
.blog-listing-head h1 {
  font-size: clamp(34px, 5vw, 48px);
  font-weight: 800;
  margin: 0 0 12px;
  letter-spacing: -0.02em;
}
.blog-subtitle {
  color: var(--fg-dim);
  margin: 0;
  font-size: 17px;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

.blog-tag-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin: 0 0 36px;
}
.blog-tag-chip {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--fg-dim);
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.15s ease;
}
.blog-tag-chip:hover {
  border-color: var(--line-strong);
  color: var(--fg);
}
.blog-tag-chip[aria-pressed="true"] {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
}

.blog-count {
  color: var(--fg-muted);
  font-size: 14px;
  margin: 0 0 16px;
  text-align: center;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}

.blog-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 24px;
  color: var(--fg);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  position: relative;
  overflow: hidden;
}
.blog-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: 0 12px 32px rgba(245, 189, 0, 0.12);
  text-decoration: none;
}
.blog-card h2 {
  font-size: 20px;
  font-weight: 700;
  margin: 12px 0 8px;
  line-height: 1.3;
  letter-spacing: -0.01em;
}
.blog-card p {
  color: var(--fg-dim);
  margin: 0 0 16px;
  font-size: 15px;
  flex: 1;
}
.blog-card-meta {
  color: var(--fg-muted);
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.blog-card-meta b {
  color: var(--fg);
  font-weight: 600;
}

/* Featured card — first article, spans full row, two-column on desktop */
.blog-card--featured {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 0;
  padding: 0;
  background: linear-gradient(135deg, var(--surface) 0%, var(--surface-2) 100%);
  min-height: 280px;
}
.blog-card--featured .blog-card-body {
  padding: 36px 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.blog-card--featured h2 {
  font-size: clamp(24px, 2.4vw, 32px);
  margin: 14px 0 12px;
  line-height: 1.2;
}
.blog-card--featured p {
  font-size: 16px;
  margin-bottom: 20px;
}
.blog-card--featured .blog-card-visual {
  background:
    radial-gradient(circle at 30% 30%, color-mix(in srgb, var(--accent) 35%, transparent) 0%, transparent 60%),
    radial-gradient(circle at 70% 70%, color-mix(in srgb, var(--accent-2) 30%, transparent) 0%, transparent 60%),
    var(--surface-2);
  position: relative;
  overflow: hidden;
}
.blog-card--featured .blog-card-visual::after {
  content: "→";
  position: absolute;
  right: 32px;
  bottom: 28px;
  font-size: 80px;
  font-weight: 300;
  color: var(--accent);
  opacity: 0.55;
  line-height: 1;
  transition: transform 0.25s ease;
}
.blog-card--featured:hover .blog-card-visual::after {
  transform: translateX(6px);
}
@media (max-width: 768px) {
  .blog-card--featured { grid-template-columns: 1fr; min-height: auto; }
  .blog-card--featured .blog-card-body { padding: 28px; }
  .blog-card--featured .blog-card-visual { min-height: 120px; }
}

.blog-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.blog-tag {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--accent-text);
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  padding: 4px 10px;
  border-radius: 999px;
}

.blog-empty {
  color: var(--fg-muted);
  text-align: center;
  padding: 60px 0;
  grid-column: 1 / -1;
}
.blog-card[hidden] { display: none; }

/* ---------- Article page ---------- */
.article-hero {
  padding: 48px 0 32px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(ellipse at 20% 0%, color-mix(in srgb, var(--accent) 12%, transparent) 0%, transparent 50%),
    radial-gradient(ellipse at 90% 100%, color-mix(in srgb, var(--accent-2) 8%, transparent) 0%, transparent 50%);
}
.article-hero-inner {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 24px;
}
.breadcrumb {
  font-size: 13px;
  color: var(--fg-muted);
  margin-bottom: 20px;
}
.breadcrumb a { color: var(--fg-muted); }
.breadcrumb a:hover { color: var(--fg); }
.breadcrumb-sep { margin: 0 8px; opacity: 0.5; }

.article-hero h1 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  line-height: 1.18;
  margin: 16px 0 16px;
  letter-spacing: -0.02em;
}
.article-meta {
  color: var(--fg-muted);
  font-size: 14px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}
.article-meta b { color: var(--fg); font-weight: 600; }
.article-meta .sep { opacity: 0.5; }

/* Two-column layout: prose + sticky TOC. TOC collapses on tablet. */
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 240px;
  gap: 56px;
  max-width: 1500px;
  margin: 0 auto;
  padding: 40px 24px 32px;
}
@media (max-width: 960px) {
  .article-layout { grid-template-columns: 1fr; gap: 0; padding: 24px 24px 0; }
}

.article-prose {
  max-width: 720px;
  font-size: 17px;
  line-height: 1.72;
}
.article-prose h2 {
  font-size: 26px;
  font-weight: 700;
  margin: 44px 0 14px;
  line-height: 1.25;
  letter-spacing: -0.01em;
  scroll-margin-top: 88px;
}
.article-prose h2:first-child { margin-top: 0; }
.article-prose h3 {
  font-size: 20px;
  font-weight: 700;
  margin: 32px 0 10px;
  line-height: 1.3;
  scroll-margin-top: 88px;
}
.article-prose p { margin: 0 0 18px; }
.article-prose ul, .article-prose ol {
  margin: 0 0 18px;
  padding-left: 26px;
}
.article-prose li { margin-bottom: 8px; }
.article-prose li::marker { color: var(--accent-text); }
.article-prose strong { color: var(--fg); font-weight: 700; }
.article-prose em { color: var(--fg); font-style: italic; }
.article-prose a {
  color: var(--accent-text);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  text-decoration-color: color-mix(in srgb, var(--accent-text) 40%, transparent);
}
.article-prose a:hover { text-decoration-color: var(--accent-text); }
.article-prose code {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 1px 6px;
  border-radius: 5px;
  font-size: 0.92em;
}
.article-prose pre {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px 20px;
  overflow-x: auto;
  margin: 0 0 18px;
}
.article-prose pre code {
  background: none;
  border: none;
  padding: 0;
}
.article-prose blockquote {
  border-left: 3px solid var(--accent);
  padding: 4px 0 4px 20px;
  margin: 24px 0;
  color: var(--fg-dim);
  font-style: italic;
}
.article-prose hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 36px 0;
}

/* Mobile TOC — collapsible at top of prose */
.article-toc-mobile {
  margin: 0 0 28px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  display: none;
}
.article-toc-mobile summary {
  cursor: pointer;
  padding: 14px 18px;
  font-weight: 600;
  font-size: 15px;
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}
.article-toc-mobile summary::-webkit-details-marker { display: none; }
.article-toc-mobile summary::before {
  content: "▸";
  color: var(--accent-text);
  font-size: 12px;
  transition: transform 0.15s ease;
}
.article-toc-mobile[open] summary::before { transform: rotate(90deg); }
.article-toc-mobile ol {
  margin: 0;
  padding: 0 18px 14px 38px;
  font-size: 14px;
  line-height: 1.7;
}
.article-toc-mobile a {
  color: var(--fg-dim);
}
@media (max-width: 960px) {
  .article-toc-mobile { display: block; }
}

/* Desktop TOC — sticky sidebar */
.article-toc {
  position: sticky;
  top: 88px;
  align-self: start;
  font-size: 14px;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
}
.article-toc-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--fg-muted);
  margin-bottom: 14px;
}
.article-toc ol {
  list-style: none;
  padding: 0;
  margin: 0;
  border-left: 2px solid var(--line);
}
.article-toc li { margin: 0; }
.article-toc a {
  display: block;
  padding: 6px 14px;
  margin-left: -2px;
  border-left: 2px solid transparent;
  color: var(--fg-muted);
  line-height: 1.45;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.article-toc a:hover {
  color: var(--fg);
  text-decoration: none;
}
.article-toc a.active {
  color: var(--accent-text);
  border-left-color: var(--accent);
  font-weight: 600;
}
@media (max-width: 960px) {
  .article-toc { display: none; }
}

/* Tags row before H1 in article hero */
.article-hero .blog-tags { margin-bottom: 0; }

/* ---------- Related + prev/next ---------- */
.article-tail {
  border-top: 1px solid var(--line);
  margin-top: 56px;
  padding: 40px 0;
}
.article-tail-inner {
  max-width: 1500px;
  margin: 0 auto;
  padding: 0 24px;
}
.article-related h2 {
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 20px;
  letter-spacing: -0.01em;
}
.article-prevnext {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 40px;
}
.article-prevnext-link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 22px;
  border: 1px solid var(--line);
  border-radius: 14px;
  color: var(--fg);
  background: var(--surface);
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.article-prevnext-link:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  text-decoration: none;
}
.article-prevnext-link.next { text-align: right; }
.article-prevnext-label {
  font-size: 11px;
  color: var(--accent-text);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
}
.article-prevnext-title {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--fg);
}
.article-prevnext-spacer { display: block; }
@media (max-width: 560px) {
  .article-prevnext { grid-template-columns: 1fr; }
  .article-prevnext-link.next { text-align: left; }
  .article-prevnext-spacer { display: none; }
}

/* ---------- Footer ---------- */
.blog-footer {
  border-top: 1px solid var(--line);
  background: var(--surface);
  padding: 48px 0;
  text-align: center;
}
.blog-footer-inner {
  max-width: 1500px;
  margin: 0 auto;
  padding: 0 24px;
}
.blog-footer h3 {
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 8px;
}
.blog-footer p {
  color: var(--fg-dim);
  margin: 0 0 20px;
}
.blog-cta {
  display: inline-block;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 700;
  font-size: 15px;
  padding: 14px 32px;
  border-radius: 999px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.blog-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(245, 189, 0, 0.35);
  text-decoration: none;
}


/* ---------- Article: back-to-top button ---------- */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, #F5BD00, #FF7A0F);
  color: #15110C;
  border: none;
  font-size: 20px;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
  transition: opacity 200ms ease, transform 200ms ease;
  z-index: 50;
}
.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}


/* ---------- Blog: in-site search ---------- */
.blog-search-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.blog-search-input {
  flex: 1;
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--fg);
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: border-color 150ms;
}
.blog-search-input:focus {
  border-color: var(--accent);
}
.blog-search-count {
  font-size: 12px;
  color: var(--fg-muted);
  white-space: nowrap;
}


/* ---------- Article: social share buttons ---------- */
.article-share {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 20px 0;
  margin-top: 32px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.article-share-label {
  font-size: 13px;
  color: var(--fg-muted);
  margin-right: 6px;
}
.article-share-btn {
  padding: 7px 14px;
  border-radius: 999px;
  background: var(--bg);
  border: 1px solid var(--line);
  color: var(--fg-dim);
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  font-family: inherit;
  transition: all 150ms;
}
.article-share-btn:hover {
  border-color: var(--accent);
  color: var(--fg);
}
.article-share-btn.vk:hover       { background: #45688E; color: white; border-color: #45688E; }
.article-share-btn.telegram:hover { background: #2AABEE; color: white; border-color: #2AABEE; }
.article-share-btn.whatsapp:hover { background: #25D366; color: white; border-color: #25D366; }