:root {
  --gh-font-heading: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --gh-font-body: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --bg: #0a0a0f;
  --bg-alt: #0e0e16;
  --surface: #12121c;
  --border: #23233a;
  --text: #e9e9f2;
  --muted: #9a9ab4;
  --cyan: #00f0ff;
  --magenta: #ff2d95;
  --violet: #aa78ff;
  --glow-cyan: color-mix(in srgb, var(--cyan) 35%, transparent);
  --glow-magenta: color-mix(in srgb, var(--magenta) 35%, transparent);
  --radius: 14px;
  --header-h: 68px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 12px);
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: var(--cyan);
  text-decoration: none;
}

/* ---------- header / nav ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  height: var(--header-h);
  display: flex;
  align-items: center;
  border-bottom: 1px solid transparent;
  transition: background 0.3s ease, border-color 0.3s ease;
}

.site-header.scrolled {
  background: rgba(10, 10, 15, 0.94);
  border-bottom-color: var(--border);
}

.nav-inner {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
  color: var(--text);
}

.logo img {
  border-radius: 8px;
}

.logo-text {
  background: linear-gradient(90deg, var(--text) 40%, var(--cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.nav-menu {
  display: flex;
  align-items: center;
}

.nav {
  display: flex;
  gap: 10px;
  list-style: none;
}

.nav a {
  display: inline-block;
  padding: 8px 20px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.nav a:hover {
  color: var(--text);
  border-color: color-mix(in srgb, var(--cyan) 50%, transparent);
  box-shadow: 0 0 16px var(--glow-cyan);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle-bar {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

#laser-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(60% 50% at 50% 110%, color-mix(in srgb, var(--cyan) 12%, transparent), transparent 70%),
    radial-gradient(50% 40% at 80% -10%, color-mix(in srgb, var(--magenta) 10%, transparent), transparent 70%);
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 0 24px;
}

.hero-kicker {
  text-transform: uppercase;
  letter-spacing: 0.35em;
  font-size: 0.75rem;
  color: var(--muted);
  margin-bottom: 18px;
}

.hero-title {
  font-size: clamp(3rem, 10vw, 6.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1;
  text-shadow: 0 0 30px color-mix(in srgb, var(--cyan) 25%, transparent);
}

.hero-motto {
  margin-top: 20px;
  font-size: clamp(1.05rem, 2.5vw, 1.35rem);
  color: var(--muted);
  font-style: italic;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-block;
  padding: 12px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: linear-gradient(90deg, color-mix(in srgb, var(--cyan) 15%, transparent), color-mix(in srgb, var(--magenta) 15%, transparent));
  border-color: color-mix(in srgb, var(--cyan) 50%, transparent);
  color: var(--text);
  box-shadow: 0 0 20px color-mix(in srgb, var(--cyan) 15%, transparent);
}

.btn-primary:hover {
  border-color: var(--cyan);
  box-shadow: 0 0 30px color-mix(in srgb, var(--cyan) 35%, transparent);
}

.btn-ghost {
  border-color: var(--border);
  color: var(--muted);
}

.btn-ghost:hover {
  color: var(--text);
  border-color: var(--muted);
}

/* ---------- sections ---------- */
.section {
  max-width: 1100px;
  margin: 0 auto;
  padding: 96px 24px;
}

.section-title {
  position: relative;
  display: inline-block;
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
}

.section-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 48px;
  height: 3px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--magenta));
  box-shadow: 0 0 12px var(--glow-cyan);
}

.section-lede {
  color: var(--muted);
  margin-bottom: 40px;
  max-width: 60ch;
}

.accent-text {
  color: var(--cyan);
  text-shadow: 0 0 18px var(--glow-cyan);
}

/* ---------- post grid / cards ---------- */
.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.post-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.post-card:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--cyan) 40%, transparent);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4), 0 0 24px var(--glow-cyan);
}

.post-art {
  position: relative;
  display: block;
  height: 180px;
  overflow: hidden;
  background:
    radial-gradient(80% 100% at 30% 0%, color-mix(in srgb, var(--cyan) 15%, transparent), transparent 60%),
    radial-gradient(80% 100% at 80% 100%, color-mix(in srgb, var(--magenta) 15%, transparent), transparent 60%),
    #0c0c14;
}

.post-art img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.post-card:hover .post-art img {
  transform: scale(1.04);
}

.post-art-beam {
  position: absolute;
  top: 50%;
  left: -20%;
  width: 140%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  box-shadow: 0 0 14px var(--glow-cyan);
  transform: rotate(24deg);
}

.post-art-beam--2 {
  top: 45%;
  background: linear-gradient(90deg, transparent, var(--magenta), transparent);
  box-shadow: 0 0 14px var(--glow-magenta);
  transform: rotate(-32deg);
}

.post-body {
  padding: 22px;
}

.post-head {
  margin-bottom: 10px;
}

.post-head h3 {
  font-size: 1.15rem;
  line-height: 1.3;
}

.post-head h3 a {
  color: var(--text);
  transition: color 0.2s ease;
}

.post-head h3 a:hover {
  color: var(--cyan);
}

.post-excerpt {
  color: var(--muted);
  font-size: 0.95rem;
}

.post-meta {
  margin-top: 14px;
  font-size: 0.85rem;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}

.post-meta a {
  color: var(--cyan);
}

/* ---------- single post / page ---------- */
.post {
  max-width: 760px;
  margin: 0 auto;
  padding: calc(var(--header-h) + 48px) 24px 80px;
}

.post-header {
  margin-bottom: 40px;
  text-align: center;
}

.post-tag-row {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 22px;
}

.pill-tag {
  display: inline-block;
  padding: 5px 14px;
  border: 1px solid color-mix(in srgb, var(--cyan) 40%, transparent);
  border-radius: 999px;
  color: var(--cyan);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.pill-tag:hover {
  border-color: var(--cyan);
  box-shadow: 0 0 14px var(--glow-cyan);
}

.post-title {
  font-size: clamp(2.2rem, 6vw, 3.4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
  text-shadow: 0 0 30px color-mix(in srgb, var(--cyan) 15%, transparent);
}

.post-byline {
  margin-top: 16px;
  color: var(--muted);
  font-size: 0.9rem;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.post-byline a {
  color: var(--cyan);
}

.post-hero {
  margin: 32px 0 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}

.post-hero img {
  width: 100%;
  height: auto;
}

/* ---------- post content ---------- */
.post-content {
  font-size: 1.05rem;
  line-height: 1.75;
}

.post-content > * + * {
  margin-top: 1.4em;
}

.post-content p {
  color: #c9c9dc;
}

.post-content h2,
.post-content h3,
.post-content h4 {
  margin-top: 1.8em;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.25;
}

.post-content a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: color-mix(in srgb, var(--cyan) 40%, transparent);
}

.post-content a:hover {
  text-decoration-color: var(--cyan);
}

.post-content img {
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.post-content figure {
  margin: 2em 0;
}

.post-content figcaption {
  color: var(--muted);
  font-size: 0.85rem;
  margin-top: 10px;
  text-align: center;
}

.post-content blockquote {
  border-left: 3px solid var(--cyan);
  padding: 6px 0 6px 22px;
  margin: 1.8em 0;
  color: var(--text);
  font-style: italic;
}

.post-content ul,
.post-content ol {
  padding-left: 1.4em;
  color: #c9c9dc;
}

.post-content li {
  margin: 0.4em 0;
}

.post-content li::marker {
  color: var(--cyan);
}

.post-content code {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2px 6px;
  font-size: 0.88em;
}

.post-content pre {
  background: #0c0c14;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  overflow-x: auto;
}

.post-content pre code {
  border: 0;
  padding: 0;
  background: none;
  font-size: 0.9em;
}

.post-content hr {
  border: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
  margin: 2.5em auto;
}

.post-content iframe,
.post-content video {
  max-width: 100%;
  border-radius: var(--radius);
}

.post-content .kg-card,
.post-content .kg-embed-card,
.post-content .kg-bookmark-card {
  margin: 2em 0;
}

/* ---------- Koenig: bookmark card ---------- */
.post-content .kg-bookmark-card {
  display: grid;
  grid-template-columns: 1fr 96px;
  gap: 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  padding: 20px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.post-content .kg-bookmark-card:hover {
  border-color: color-mix(in srgb, var(--cyan) 40%, transparent);
  box-shadow: 0 0 20px var(--glow-cyan);
}

.post-content .kg-bookmark-container {
  min-width: 0;
}

.post-content .kg-bookmark-content {
  display: block;
  min-width: 0;
}

.post-content .kg-bookmark-icon {
  width: 20px;
  height: 20px;
  display: block;
  margin-bottom: 10px;
}

.post-content .kg-bookmark-title {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.35;
  margin-bottom: 6px;
}

.post-content .kg-bookmark-description {
  display: block;
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 10px;
}

.post-content .kg-bookmark-metadata {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  color: var(--muted);
  font-size: 0.8rem;
}

.post-content .kg-bookmark-author,
.post-content .kg-bookmark-publisher {
  color: var(--cyan);
}

.post-content .kg-bookmark-thumbnail {
  display: block;
  width: 96px;
  height: 96px;
  border-radius: 10px;
  overflow: hidden;
  background: #0c0c14;
}

.post-content .kg-bookmark-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- Koenig: gallery card ---------- */
.post-content .kg-gallery-container {
  margin: 2em 0;
}

.post-content .kg-gallery-row {
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
}

.post-content .kg-gallery-image {
  flex: 1 1 0;
  min-width: 0;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.post-content .kg-gallery-image img {
  display: block;
  width: 100%;
  height: auto;
}

/* ---------- Koenig: width modifiers ---------- */
.post-content .kg-width-full {
  max-width: 100%;
}

.post-content .kg-width-wide {
  max-width: 100%;
}

.post-content table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.post-content th,
.post-content td {
  border: 1px solid var(--border);
  padding: 10px 12px;
  text-align: left;
  color: #c9c9dc;
}

.post-content th {
  background: var(--surface);
  color: var(--text);
}

/* ---------- post author ---------- */
.post-author {
  margin-top: 56px;
  display: flex;
  align-items: center;
  gap: 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
}

.post-author img {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 1px solid var(--border);
  object-fit: cover;
}

.post-author-body h3 {
  font-size: 1.05rem;
  margin-bottom: 4px;
}

.post-author-body p {
  color: var(--muted);
  font-size: 0.9rem;
}

/* ---------- archives (tag / author) ---------- */
.archive-head {
  margin-bottom: 48px;
}

.archive-title {
  font-size: clamp(2rem, 5vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.15;
}

.author-head {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-bottom: 48px;
}

.author-avatar {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  border: 1px solid var(--border);
  object-fit: cover;
  box-shadow: 0 0 24px color-mix(in srgb, var(--cyan) 15%, transparent);
}

.author-head-body .section-lede {
  margin-bottom: 0;
  max-width: 50ch;
}

/* ---------- pagination ---------- */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 64px;
}

.pagination .newer-posts,
.pagination .older-posts {
  padding: 10px 22px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.pagination .newer-posts:hover,
.pagination .older-posts:hover {
  color: var(--text);
  border-color: color-mix(in srgb, var(--cyan) 50%, transparent);
  box-shadow: 0 0 16px var(--glow-cyan);
}

.pagination .page-number {
  color: var(--muted);
  font-size: 0.9rem;
}

/* ---------- 404 ---------- */
.error-404 {
  min-height: 70vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.error-code {
  font-size: clamp(4rem, 14vw, 8rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
  text-shadow: 0 0 40px var(--glow-cyan);
}

.error-zero {
  color: var(--cyan);
  text-shadow: 0 0 24px var(--glow-cyan), 0 0 80px var(--glow-cyan);
}

.error-404 .section-lede {
  margin: 20px 0 36px;
}

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 36px 24px;
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
}

.footer-tagline {
  font-style: italic;
  margin-bottom: 14px;
}

.footer-social {
  list-style: none;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
}

.footer-social a {
  display: inline-block;
  padding: 5px 16px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.8rem;
  transition: color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.footer-social a:hover {
  color: var(--text);
  border-color: color-mix(in srgb, var(--cyan) 50%, transparent);
  box-shadow: 0 0 14px var(--glow-cyan);
}

.footer-copy {
  color: var(--muted);
}

/* ---------- reveal on scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ---------- responsive ---------- */
@media (max-width: 760px) {
  .section {
    padding: 72px 20px;
  }

  .author-head {
    flex-direction: column;
    text-align: center;
  }

  .author-head-body .section-lede {
    margin: 0 auto;
  }
}

@media (max-width: 640px) {
  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: rgba(10, 10, 15, 0.97);
    border-bottom: 1px solid var(--border);
    padding: 8px 24px 16px;
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
  }

  .nav-menu.open {
    opacity: 1;
    transform: none;
    visibility: visible;
  }

  .nav {
    flex-direction: column;
    gap: 0;
  }

  .nav li {
    padding: 5px 0;
  }

  .nav a {
    display: block;
    width: 100%;
    text-align: center;
  }
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .btn,
  .post-card,
  .nav-menu,
  .post-art img {
    transition: none;
  }
}