:root {
  --bg: #0b0f14;
  --surface: #11161c;
  --surface2: #151a21;
  --border: rgba(255, 255, 255, 0.06);
  --text: #e6edf3;
  --text2: #a7b0ba;
  --text3: #6f7a86;
  --accent: #4f8cff;
  --accent-dim: rgba(79, 140, 255, 0.12);
  --accent2: #c86f6f;
  --accent2-dim: rgba(200, 111, 111, 0.12);
  --accent3: #4f8cff;
  --accent3-dim: rgba(79, 140, 255, 0.12);
  --accent4: #d3a35f;
  --accent4-dim: rgba(211, 163, 95, 0.12);
  --accent5: #7c5cff;
  --accent5-dim: rgba(124, 92, 255, 0.12);
  --nav-bg: rgba(11, 15, 20, 0.86);
  --mono: 'JetBrains Mono', monospace;
  --sans: 'Outfit', sans-serif;
  --display: 'Syne', sans-serif;
  --radius: 10px;
  --transition: 0.24s ease;
  --post-width: 740px;
  --post-subtitle-size: 1.1rem;
}

[data-theme="light"] {
  --bg: #f2f5f8;
  --surface: #ffffff;
  --surface2: #edf2f7;
  --border: rgba(15, 23, 42, 0.08);
  --text: #17212b;
  --text2: #52606d;
  --text3: #748291;
  --accent-dim: rgba(79, 140, 255, 0.12);
  --accent2-dim: rgba(200, 111, 111, 0.14);
  --accent3-dim: rgba(79, 140, 255, 0.12);
  --accent4-dim: rgba(211, 163, 95, 0.14);
  --accent5-dim: rgba(124, 92, 255, 0.12);
  --nav-bg: rgba(242, 245, 248, 0.88);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body.post-page {
  position: relative;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-weight: 400;
  line-height: 1.6;
  transition: background var(--transition), color var(--transition);
  overflow-x: hidden;
}

body.post-page::before,
body.post-page::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
}

body.post-page::before {
  background:
    radial-gradient(circle at 12% 10%, rgba(79, 140, 255, 0.1), transparent 24rem),
    radial-gradient(circle at 84% 18%, rgba(124, 92, 255, 0.07), transparent 28rem);
  opacity: 0.75;
}

body.post-page::after {
  background-image:
    linear-gradient(rgba(79, 140, 255, 0.024) 1px, transparent 1px),
    linear-gradient(90deg, rgba(79, 140, 255, 0.024) 1px, transparent 1px);
  background-size: 120px 120px;
  opacity: 0.12;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.45), transparent 84%);
}

body.post-page nav,
body.post-page .layout,
body.post-page footer {
  position: relative;
  z-index: 1;
}

body.post-page a {
  color: var(--accent);
  text-decoration: none;
}

body.post-page a:hover {
  text-decoration: underline;
}

body.post-page nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--nav-bg);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  backdrop-filter: blur(18px);
}

body.post-page .nav-logo {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--accent);
  text-decoration: none;
}

body.post-page .nav-logo span {
  color: var(--text2);
}

body.post-page .nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

body.post-page .nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text2);
  transition: color var(--transition);
  text-decoration: none;
}

body.post-page .nav-links a:hover {
  color: var(--text);
}

body.post-page .theme-btn {
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text2);
  cursor: pointer;
  font-family: var(--mono);
  font-size: 0.75rem;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius);
  transition: all var(--transition);
}

body.post-page .theme-btn:hover {
  color: var(--text);
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(79, 140, 255, 0.16);
}

body.post-page .layout {
  display: grid;
  grid-template-columns: 1fr min(var(--post-width), 100%) 1fr;
  padding: 0 2rem;
}

body.post-page .layout > * {
  grid-column: 2;
}

body.post-page .post-header {
  padding: 4rem 0 3rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 3rem;
}

body.post-page .post-breadcrumb {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text3);
  margin-bottom: 1.5rem;
}

body.post-page .post-breadcrumb a {
  color: var(--accent);
  text-decoration: none;
}

body.post-page .post-breadcrumb a:hover {
  text-decoration: underline;
}

body.post-page .post-meta-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

body.post-page .post-date {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text3);
}

body.post-page .post-tag {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--accent);
  background: rgba(79, 140, 255, 0.12);
  border: 1px solid rgba(79, 140, 255, 0.2);
  padding: 0.15rem 0.5rem;
  border-radius: 100px;
  transition: transform var(--transition), border-color var(--transition), background var(--transition), box-shadow var(--transition);
}

body.post-page .post-tag-link {
  display: inline-flex;
  text-decoration: none;
}

body.post-page .post-tag-link:hover,
body.post-page .post-tag-link:focus-visible {
  text-decoration: none;
}

body.post-page .post-tag-link:hover .post-tag,
body.post-page .post-tag-link:focus-visible .post-tag {
  transform: translateY(-1px);
  border-color: rgba(79, 140, 255, 0.34);
  background: rgba(79, 140, 255, 0.16);
  box-shadow: 0 0 0 3px rgba(79, 140, 255, 0.12);
}

body.post-page .post-tag.orange {
  color: var(--accent4);
  background: var(--accent4-dim);
  border-color: var(--accent4);
}

body.post-page .post-tag.red {
  color: var(--accent2);
  background: var(--accent2-dim);
  border-color: var(--accent2);
}

body.post-page .post-tag.blue {
  color: var(--accent3);
  background: var(--accent3-dim);
  border-color: var(--accent3);
}

body.post-page .post-tag.purple {
  color: var(--accent5);
  background: var(--accent5-dim);
  border-color: var(--accent5);
}

body.post-page .post-read-time {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text3);
}

body.post-page h1.post-title {
  font-family: var(--display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 1.25rem;
}

body.post-page .post-subtitle {
  font-size: var(--post-subtitle-size);
  color: var(--text2);
  font-weight: 300;
  line-height: 1.65;
}

body.post-page .article-brief {
  margin: 0 0 2.75rem;
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-radius: 18px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.012)),
    linear-gradient(135deg, rgba(79, 140, 255, 0.05), transparent 50%),
    var(--surface);
  box-shadow: 0 18px 34px rgba(3, 8, 15, 0.2);
}

body.post-page .article-brief-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

body.post-page .article-brief-block {
  display: grid;
  gap: 0.7rem;
}

body.post-page .article-brief-wide {
  grid-column: 1 / -1;
}

body.post-page .article-brief-label {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

body.post-page .article-brief-block p {
  margin: 0;
  color: var(--text2);
  line-height: 1.75;
}

body.post-page .article-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

body.post-page .article-tool {
  display: inline-flex;
  align-items: center;
  padding: 0.28rem 0.62rem;
  border-radius: 999px;
  border: 1px solid rgba(79, 140, 255, 0.18);
  background: rgba(79, 140, 255, 0.08);
  color: var(--text2);
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.04em;
}

body.post-page .article-takeaways {
  margin: 0;
  padding-left: 1.2rem;
}

body.post-page .article-takeaways li {
  color: var(--text2);
  font-size: 0.92rem;
  line-height: 1.7;
  margin-bottom: 0.35rem;
}

body.post-page .toc {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.012)),
    var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 1.5rem;
  margin-bottom: 3rem;
  box-shadow: 0 18px 34px rgba(3, 8, 15, 0.2);
}

body.post-page .toc-title {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}

body.post-page .toc ol {
  padding-left: 1.25rem;
}

body.post-page .toc li {
  margin-bottom: 0.4rem;
}

body.post-page .toc a {
  font-size: 0.875rem;
  color: var(--text2);
  text-decoration: none;
  transition: color var(--transition);
}

body.post-page .toc a:hover {
  color: var(--accent);
}

body.post-page article {
  margin-bottom: 4rem;
}

body.post-page hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 3rem 0;
}

body.post-page .post-navigation,
body.post-page .post-related {
  padding-top: 2.6rem;
  margin-top: 2.6rem;
  border-top: 1px solid var(--border);
}

body.post-page .post-section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem 1.5rem;
  margin-bottom: 1.35rem;
}

body.post-page .post-section-label {
  display: inline-flex;
  margin-bottom: 0.55rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

body.post-page .post-section-title {
  font-family: var(--display);
  font-size: clamp(1.15rem, 2vw, 1.5rem);
  letter-spacing: -0.03em;
  line-height: 1.15;
}

body.post-page .post-section-copy {
  max-width: 30rem;
  color: var(--text2);
  line-height: 1.75;
}

body.post-page .post-nav-grid,
body.post-page .related-posts-grid {
  display: grid;
  gap: 1rem;
}

body.post-page .post-nav-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

body.post-page .post-nav-grid > :only-child {
  grid-column: 1 / -1;
}

body.post-page .post-nav-card,
body.post-page .related-post-card {
  display: grid;
  gap: 0.85rem;
  padding: 1.3rem 1.35rem;
  border-radius: 18px;
  border: 1px solid var(--border);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.012)),
    linear-gradient(135deg, rgba(79, 140, 255, 0.05), transparent 52%),
    var(--surface);
  box-shadow: 0 18px 34px rgba(3, 8, 15, 0.2);
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition), background var(--transition);
  text-decoration: none;
}

body.post-page .post-nav-card:hover,
body.post-page .post-nav-card:focus-visible,
body.post-page .related-post-card:hover,
body.post-page .related-post-card:focus-visible {
  text-decoration: none;
  border-color: rgba(79, 140, 255, 0.3);
  transform: translateY(-2px);
  box-shadow: 0 24px 42px rgba(3, 8, 15, 0.28);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.014)),
    linear-gradient(135deg, rgba(79, 140, 255, 0.08), transparent 54%),
    var(--surface);
}

body.post-page .post-nav-label {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

body.post-page .post-nav-title,
body.post-page .related-post-title {
  font-family: var(--display);
  font-size: 1.12rem;
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: var(--text);
}

body.post-page .post-nav-meta {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text3);
}

body.post-page .related-posts-grid {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

body.post-page .related-post-meta {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  flex-wrap: wrap;
}

body.post-page .related-post-excerpt {
  color: var(--text2);
  line-height: 1.75;
  margin: 0;
}

body.post-page .related-post-read {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
}

body.post-page .related-post-read::after {
  content: "\2192";
  transition: transform var(--transition);
}

body.post-page .related-post-card:hover .related-post-read::after,
body.post-page .related-post-card:focus-visible .related-post-read::after {
  transform: translateX(4px);
}

body.post-page .post-footer {
  padding: 3rem 0;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

body.post-page .post-footer-note {
  color: var(--text3);
  font-size: 0.88rem;
  line-height: 1.7;
  text-align: right;
}

body.post-page .btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  border: 1px solid var(--border);
  color: var(--text2);
  text-decoration: none;
}

body.post-page .btn:hover {
  border-color: rgba(79, 140, 255, 0.26);
  color: var(--text);
  text-decoration: none;
  background: rgba(79, 140, 255, 0.06);
}

body.post-page .btn-accent {
  border-color: var(--accent);
  color: var(--accent);
}

body.post-page .btn-accent:hover {
  background: rgba(79, 140, 255, 0.1);
}

body.post-page footer {
  border-top: 1px solid var(--border);
  padding: 2rem 6vw;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text3);
}

body.post-page .footer-back {
  cursor: pointer;
  transition: color var(--transition);
}

body.post-page .footer-back:hover {
  color: var(--accent);
}

@media (max-width: 768px) {
  body.post-page nav {
    padding: 0 1.5rem;
  }

  body.post-page .nav-links {
    display: none;
  }

  body.post-page .layout {
    grid-template-columns: 1fr;
    padding: 0 1.5rem;
  }

  body.post-page .post-header {
    padding: 3rem 0 2rem;
  }

  body.post-page .article-brief-grid {
    grid-template-columns: 1fr;
  }

  body.post-page .post-section-head,
  body.post-page .post-footer {
    flex-direction: column;
    align-items: flex-start;
  }

  body.post-page .post-nav-grid {
    grid-template-columns: 1fr;
  }

  body.post-page .post-footer-note {
    text-align: left;
  }

  body.post-page footer {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}