:root {
  --bg: #0B1120;
  --bg-elevated: #111827;
  --bg-soft: #1A2332;
  --gold: #C9A84C;
  --gold-dim: rgba(201, 168, 76, 0.14);
  --cyan: #00E5FF;
  --white: #F1F5F9;
  --light: #E2E8F0;
  --gray: #94A3B8;
  --dark-gray: #64748B;
  --heading: "Outfit", sans-serif;
  --body: "Inter", sans-serif;
  --mono: "JetBrains Mono", monospace;
  --max: 920px;
  --wide: 1120px;
  --mermaid-max: 1040px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--body);
  background: var(--bg);
  color: var(--light);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

::selection { background: var(--gold); color: var(--bg); }

a { color: var(--gold); text-decoration: none; transition: color 0.25s ease; }
a:hover { color: var(--cyan); }

.page-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(ellipse 70% 50% at 100% 0%, rgba(0, 229, 255, 0.05), transparent 55%),
    radial-gradient(ellipse 50% 40% at 0% 30%, rgba(201, 168, 76, 0.06), transparent 50%),
    linear-gradient(180deg, #0B1120 0%, #0E1526 50%, #0B1120 100%);
}

/* Nav */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(11, 17, 32, 0.72);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(201, 168, 76, 0.08);
  transition: background 0.3s ease;
}
.site-nav.scrolled { background: rgba(11, 17, 32, 0.94); }

.nav-inner {
  max-width: var(--wide);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
}

.nav-brand {
  font-family: var(--heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.02em;
}
.nav-brand span { color: var(--gold); }
.nav-brand em {
  font-style: normal;
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--cyan);
  margin-left: 0.35rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  gap: 1.75rem;
  list-style: none;
}
.nav-links a {
  color: var(--gray);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.nav-links a:hover { color: var(--gold); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.4rem;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--gold);
  margin: 5px 0;
}

.site-main { padding-top: 4.5rem; }

.section-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Hero — brand-first, one composition */
.hero {
  position: relative;
  padding: 5.5rem 1.5rem 3.5rem;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 3px;
  height: 100%;
  background: linear-gradient(to bottom, var(--gold), transparent);
}
.hero-inner {
  max-width: var(--wide);
  margin: 0 auto;
}
.hero-label {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--gold);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
  opacity: 0;
  animation: fadeUp 0.7s 0.1s forwards;
}
.hero-brand {
  font-family: var(--heading);
  font-size: clamp(2.8rem, 8vw, 4.75rem);
  font-weight: 800;
  color: var(--white);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
  opacity: 0;
  animation: fadeUp 0.7s 0.25s forwards;
}
.hero-brand span { color: var(--gold); }
.hero-lead {
  font-family: var(--mono);
  font-size: 0.95rem;
  color: var(--cyan);
  letter-spacing: 0.04em;
  margin-bottom: 1rem;
  opacity: 0;
  animation: fadeUp 0.7s 0.4s forwards;
}
.hero-sub {
  max-width: 34rem;
  color: var(--gray);
  font-size: 1.05rem;
  opacity: 0;
  animation: fadeUp 0.7s 0.55s forwards;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Post list */
.posts-section { padding: 1rem 0 5rem; }

.post-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.post-item {
  border-top: 1px solid rgba(201, 168, 76, 0.12);
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s ease, transform 0.55s ease;
  transition-delay: calc(var(--stagger, 0) * 60ms);
}
.post-item.in-view,
.animate-in.in-view {
  opacity: 1;
  transform: none;
}
.post-item:last-child { border-bottom: 1px solid rgba(201, 168, 76, 0.12); }

.post-link {
  display: block;
  padding: 1.75rem 0;
  color: inherit;
}
.post-link:hover h2 { color: var(--gold); }
.post-link time {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--gold);
  letter-spacing: 0.06em;
}
.post-link h2 {
  font-family: var(--heading);
  font-size: clamp(1.35rem, 3vw, 1.7rem);
  font-weight: 700;
  color: var(--white);
  margin: 0.4rem 0 0.55rem;
  line-height: 1.25;
  transition: color 0.25s ease;
}
.post-link p {
  color: var(--gray);
  font-size: 0.98rem;
  max-width: 38rem;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.85rem;
}
.tag {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--cyan);
  letter-spacing: 0.04em;
  text-transform: lowercase;
}

.pagination {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 2.5rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--gray);
}
.pagination a { color: var(--gold); }

.empty-state {
  color: var(--gray);
  padding: 2rem 0;
}
.empty-state code {
  font-family: var(--mono);
  color: var(--cyan);
  font-size: 0.85em;
}

/* Single post */
.post-header {
  padding: 4rem 0 2rem;
  position: relative;
}
.post-header::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 3px;
  height: 100%;
  background: linear-gradient(to bottom, var(--gold), transparent);
}
.post-meta {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--gold);
  letter-spacing: 0.04em;
  margin-bottom: 1rem;
}
.post-meta .sep { color: var(--dark-gray); margin: 0 0.4rem; }
.post-header h1 {
  font-family: var(--heading);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  color: var(--white);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.post-body {
  padding: 1rem 0 3rem;
  font-size: 1.05rem;
}
.post-body > *.animate-in {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.5s ease, transform 0.5s ease;
  transition-delay: calc(var(--stagger, 0) * 40ms);
}
.post-body > *.animate-in.in-view {
  opacity: 1;
  transform: none;
}

.post-body h2,
.post-body h3 {
  font-family: var(--heading);
  color: var(--white);
  margin: 2.2rem 0 0.8rem;
  line-height: 1.25;
}
.post-body h2 { font-size: 1.55rem; }
.post-body h3 { font-size: 1.2rem; color: var(--gold); }
.post-body p { margin-bottom: 1.15rem; }
.post-body ul,
.post-body ol {
  margin: 0 0 1.25rem 1.25rem;
  color: var(--light);
}
.post-body li + li { margin-top: 0.35rem; }
.post-body blockquote {
  border-left: 3px solid var(--gold);
  margin: 1.5rem 0;
  padding: 0.35rem 0 0.35rem 1.15rem;
  color: var(--gray);
  font-style: italic;
}
.post-body code {
  font-family: var(--mono);
  font-size: 0.86em;
  background: var(--bg-elevated);
  color: var(--cyan);
  padding: 0.12em 0.35em;
}
.post-body pre {
  background: var(--bg-elevated);
  border: 1px solid rgba(201, 168, 76, 0.12);
  padding: 1.1rem 1.2rem;
  overflow-x: auto;
  margin: 1.4rem 0;
  font-size: 0.88rem;
}
.post-body pre code {
  background: none;
  padding: 0;
  color: var(--light);
}
.post-body img {
  max-width: 100%;
  height: auto;
  margin: 1.5rem 0;
  display: block;
}
.post-body a { text-decoration: underline; text-underline-offset: 3px; }
.post-body hr {
  border: none;
  border-top: 1px solid rgba(201, 168, 76, 0.18);
  margin: 2.5rem 0;
}

.post-footer {
  padding-bottom: 4rem;
  border-top: 1px solid rgba(201, 168, 76, 0.12);
  padding-top: 2rem;
}
.author-box {
  margin-bottom: 1.5rem;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.author-box.in-view { opacity: 1; transform: none; }
.author-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--gold);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 0.35rem;
}
.author-name {
  font-family: var(--heading);
  font-size: 1.25rem;
  font-weight: 700;
}
.author-name a { color: var(--white); }
.author-name a:hover { color: var(--gold); }
.author-note { color: var(--gray); font-size: 0.92rem; margin-top: 0.2rem; }
.back-link a {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--gray);
}
.back-link a:hover { color: var(--gold); }

.not-found {
  padding: 6rem 1.5rem;
  text-align: center;
}
.not-found h1 {
  font-family: var(--heading);
  color: var(--white);
  margin-bottom: 1rem;
}

/* Footer */
.site-footer {
  border-top: 1px solid rgba(201, 168, 76, 0.1);
  padding: 2.5rem 1.5rem 3rem;
  background: rgba(17, 24, 39, 0.45);
}
.footer-inner {
  max-width: var(--wide);
  margin: 0 auto;
  display: grid;
  gap: 1.25rem;
}
.footer-brand a {
  font-family: var(--heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--white);
}
.footer-brand span { color: var(--gold); }
.footer-brand p {
  color: var(--gray);
  font-size: 0.88rem;
  margin-top: 0.35rem;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}
.footer-links a {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--gray);
  letter-spacing: 0.04em;
}
.footer-links a:hover { color: var(--gold); }
.footer-copy {
  font-size: 0.8rem;
  color: var(--dark-gray);
}

/* Admin */
.admin-body { background: var(--bg); }
.admin-wrap {
  max-width: 1000px;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}
.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}
.admin-logout {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--gray);
}
.admin-login,
.admin-editor {
  background: var(--bg-elevated);
  border-left: 3px solid var(--gold);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.admin-login h1,
.admin-editor h1,
.admin-list h2 {
  font-family: var(--heading);
  color: var(--white);
}
.admin-login p { color: var(--gray); font-size: 0.9rem; }
.admin-login label,
.admin-editor label {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--gold);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.admin-login input,
.admin-editor input,
.admin-editor textarea {
  font-family: var(--body);
  font-size: 1rem;
  text-transform: none;
  letter-spacing: normal;
  background: var(--bg);
  border: 1px solid rgba(201, 168, 76, 0.2);
  color: var(--white);
  padding: 0.7rem 0.85rem;
}
.admin-editor textarea { font-family: var(--mono); font-size: 0.9rem; line-height: 1.55; resize: vertical; }
.admin-login button,
.admin-editor button {
  align-self: flex-start;
  background: var(--gold);
  color: var(--bg);
  border: none;
  font-family: var(--heading);
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0.75rem 1.4rem;
  cursor: pointer;
}
.admin-login button:hover,
.admin-editor button:hover { background: var(--cyan); }
.admin-editor .check {
  flex-direction: row;
  align-items: center;
  gap: 0.55rem;
  text-transform: none;
  color: var(--gray);
  font-family: var(--body);
  font-size: 0.9rem;
  letter-spacing: normal;
}
.admin-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 1.5rem;
  align-items: start;
}
.admin-list {
  background: var(--bg-elevated);
  padding: 1.5rem;
}
.admin-list ul { list-style: none; margin-top: 1rem; }
.admin-list li {
  padding: 0.75rem 0;
  border-bottom: 1px solid rgba(201, 168, 76, 0.1);
}
.admin-list code {
  display: block;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--dark-gray);
  margin-top: 0.2rem;
}
.draft-badge {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--cyan);
  margin-left: 0.4rem;
}
.admin-hint {
  margin-top: 1.25rem;
  color: var(--gray);
  font-size: 0.85rem;
}
.admin-alert {
  padding: 0.85rem 1rem;
  margin-bottom: 1rem;
  font-size: 0.92rem;
}
.admin-alert.error {
  background: rgba(239, 68, 68, 0.12);
  color: #fca5a5;
  border-left: 3px solid #ef4444;
}
.admin-alert.success {
  background: rgba(0, 229, 255, 0.1);
  color: var(--cyan);
  border-left: 3px solid var(--cyan);
}

@media (max-width: 800px) {
  .admin-grid { grid-template-columns: 1fr; }
  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    flex-direction: column;
    gap: 0;
    background: rgba(11, 17, 32, 0.98);
    border-bottom: 1px solid rgba(201, 168, 76, 0.12);
    padding: 0.5rem 0;
  }
  .nav-links.open { display: flex; }
  .nav-links li a {
    display: block;
    padding: 0.9rem 1.5rem;
  }
  .hero { padding: 4rem 1.25rem 2.5rem; }
  .post-toc-panel .post-toc {
    max-height: 40vh;
    overflow-y: auto;
  }
}

/* Search */
.search-wrap {
  margin-bottom: 2rem;
  position: relative;
}
.search-label {
  display: block;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--gold);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 0.55rem;
}
.site-search {
  width: 100%;
  background: var(--bg-elevated);
  border: 1px solid rgba(201, 168, 76, 0.22);
  color: var(--white);
  font-family: var(--body);
  font-size: 1rem;
  padding: 0.85rem 1rem;
  outline: none;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}
.site-search:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px var(--gold-dim);
}
.search-results {
  list-style: none;
  margin-top: 0.5rem;
}
.search-results .post-link {
  display: block;
  padding: 1.25rem 0;
  border-top: 1px solid rgba(201, 168, 76, 0.12);
  color: inherit;
}
.search-results .post-link h2 {
  font-family: var(--heading);
  color: var(--white);
  font-size: 1.35rem;
  margin: 0.35rem 0;
}
.search-results time {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--gold);
}
.search-empty {
  color: var(--gray);
  padding: 1rem 0;
  font-family: var(--mono);
  font-size: 0.85rem;
}

/* Post layout — ToC always above the article body */
.post-layout {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  max-width: var(--max);
  padding-bottom: 2rem;
}
.post-layout.has-toc {
  max-width: var(--max);
}
.post-layout .post-body { padding-top: 0; }

.toc-rail {
  width: 100%;
  min-width: 0;
  order: -1;
}

.post-toc-panel {
  border: none;
  margin: 0;
  padding: 0;
}

.post-toc-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  list-style: none;
  cursor: pointer;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--gold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--bg-elevated);
  border: 1px solid rgba(201, 168, 76, 0.22);
  padding: 0.65rem 0.85rem;
  user-select: none;
}
.post-toc-summary::-webkit-details-marker { display: none; }
.post-toc-summary::after {
  content: "+";
  font-size: 1rem;
  line-height: 1;
  color: var(--cyan);
}
.post-toc-panel[open] .post-toc-summary::after {
  content: "−";
}

.post-toc {
  margin-top: 0.75rem;
  border-top: 1px solid rgba(201, 168, 76, 0.18);
  padding-top: 0.75rem;
}
.post-toc ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 1.1rem;
}
.post-toc li { margin: 0; }
.post-toc a {
  color: var(--gray);
  font-size: 0.88rem;
  line-height: 1.35;
  text-decoration: none;
}
.post-toc a:hover { color: var(--gold); }
.toc-level-3 a {
  font-size: 0.8rem;
  color: var(--dark-gray);
}
.toc-level-3 a::before {
  content: "· ";
  color: var(--gold);
}

@media (min-width: 900px) {
  .post-toc-panel {
    background: rgba(17, 24, 39, 0.55);
    border: 1px solid rgba(201, 168, 76, 0.14);
    padding: 0.85rem 1rem 1rem;
  }
  .post-toc-summary {
    background: transparent;
    border: none;
    padding: 0 0 0.35rem;
  }
  .post-toc {
    border-top-color: rgba(201, 168, 76, 0.14);
  }
}

.post-body h2,
.post-body h3 { scroll-margin-top: 5.5rem; }

.post-body img {
  width: 100%;
  border: 1px solid rgba(201, 168, 76, 0.12);
}

/* Code blocks + copy */
.code-block {
  position: relative;
  margin: 1.4rem 0;
}
.code-block pre {
  margin: 0;
  padding-top: 2.4rem;
}
.copy-btn {
  position: absolute;
  top: 0.55rem;
  right: 0.55rem;
  z-index: 2;
  background: rgba(11, 17, 32, 0.85);
  border: 1px solid rgba(201, 168, 76, 0.35);
  color: var(--gold);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.35rem 0.65rem;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}
.copy-btn:hover {
  background: var(--gold);
  color: var(--bg);
}

/* Mermaid diagrams — hand-drawn look, scales to container width */
.mermaid {
  background:
    radial-gradient(ellipse at top left, rgba(201, 168, 76, 0.06), transparent 55%),
    var(--bg-elevated);
  border: 1px dashed rgba(201, 168, 76, 0.28);
  padding: 1.5rem 1.25rem;
  margin: 1.75rem 0;
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  text-align: center;
  -webkit-overflow-scrolling: touch;
}
.mermaid svg {
  display: block;
  width: 100% !important;
  max-width: 100% !important;
  height: auto !important;
  min-width: 280px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .post-body .mermaid {
    width: min(var(--mermaid-max), calc(100vw - 3rem));
    max-width: min(var(--mermaid-max), calc(100vw - 3rem));
    margin-left: 50%;
    transform: translateX(-50%);
    padding: 1.75rem 1.5rem;
  }
}

/* Hide auto row-wrap subgraph chrome */
.mermaid svg .cluster rect {
  fill: transparent !important;
  stroke: transparent !important;
}
.mermaid svg .cluster-label,
.mermaid svg .cluster .nodeLabel {
  display: none;
}

/* Verified author badge */
.author-name {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem 0.85rem;
}
.verified-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--bg);
  background: linear-gradient(120deg, var(--gold), #e0c36a);
  padding: 0.28rem 0.55rem 0.28rem 0.4rem;
  border: 1px solid rgba(201, 168, 76, 0.55);
  line-height: 1.2;
}
.verified-badge-icon {
  flex-shrink: 0;
}
.verified-badge em {
  font-style: normal;
  color: rgba(11, 17, 32, 0.65);
  margin-left: 0.15rem;
  font-size: 0.62rem;
}

/* Honeypot traps — invisible to humans, tasty to scrapers */
.honeypot-traps {
  position: absolute;
  left: -10000px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.honeypot-traps a {
  font-size: 0;
  color: transparent;
}