/* NERD */
:root {
  --bg: #000000;
  --bg-card: #111;
  --text: #e0e0e0;
  --text-dim: #666;
  --accent: #888;
  --border: #222;
  --code-bg: #0d0d0d;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 15px;
}

a {
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid var(--border);
}

a:hover {
  border-color: var(--text);
}

/* Nav */
nav {
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--border);
}

nav .container {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

nav .logo {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  border: none;
  color: var(--text);
}

nav ul {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

nav ul li a {
  color: var(--text-dim);
  font-size: 0.9rem;
  border: none;
}

nav ul li a:hover,
nav ul li a.active {
  color: var(--text);
}

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

nav .github-link svg {
  width: 18px;
  height: 18px;
  fill: var(--text-dim);
  transition: fill 0.2s;
}

nav .github-link:hover svg {
  fill: var(--text);
}

/* Main */
main {
  max-width: 900px;
  margin: 0 auto;
  padding: 3rem 2rem;
}

/* Hero */
.hero {
  text-align: center;
  padding: 4rem 0 3rem;
}

.hero h1 {
  font-size: 4rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  margin-bottom: 0.5rem;
}

.hero-logo {
  max-width: 500px;
  width: 80%;
  height: auto;
  margin-bottom: 1rem;
}

.hero .tagline {
  font-size: 1rem;
  color: var(--text-dim);
  margin-bottom: 1rem;
}

.hero .subtitle {
  font-size: 1rem;
  color: var(--text-dim);
  margin-bottom: 2rem;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.6rem 1.2rem;
  font-size: 0.9rem;
  border: 1px solid var(--border);
  border-radius: 3px;
  transition: all 0.15s;
}

.btn-primary {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}

.btn-primary:hover {
  background: transparent;
  color: var(--text);
}

.btn-secondary {
  background: transparent;
  color: var(--text-dim);
}

.btn-secondary:hover {
  color: var(--text);
  border-color: var(--text-dim);
}

.btn-group {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
}

/* Code */
pre, code {
  font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Consolas', monospace;
  font-size: 0.85rem;
}

code {
  background: var(--code-bg);
  padding: 0.15rem 0.35rem;
  border-radius: 2px;
}

pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1rem 1.25rem;
  overflow-x: auto;
}

pre code {
  background: none;
  padding: 0;
}

.code-example {
  max-width: 400px;
  margin: 0 auto;
}

/* Sections */
section {
  margin: 3rem 0;
}

section h2 {
  font-size: 1.1rem;
  font-weight: 500;
  margin-bottom: 1rem;
  text-align: center;
  letter-spacing: 0.02em;
}

/* Features */
.feature {
  text-align: center;
}

.feature h3 {
  font-size: 0.95rem;
  font-weight: 500;
  margin-bottom: 0.25rem;
}

.feature p {
  font-size: 0.85rem;
  color: var(--text-dim);
}

/* Feature Tiles */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  max-width: 700px;
  margin: 0 auto;
}

.feature-tile {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.5rem;
  text-align: center;
}

.feature-tile h3 {
  font-size: 0.95rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.feature-tile p {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin: 0;
  line-height: 1.5;
}

@media (max-width: 600px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
}

/* Grid */
.grid {
  display: grid;
  gap: 2rem;
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

@media (max-width: 600px) {
  .grid-3 {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

/* Table */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.comparison-table th,
.comparison-table td {
  padding: 0.5rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.comparison-table th {
  font-weight: 500;
  color: var(--text-dim);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Article */
article {
  max-width: 600px;
  margin: 0 auto;
}

article h1 {
  font-size: 1.5rem;
  font-weight: 400;
  margin-bottom: 2rem;
}

article h2 {
  font-size: 1rem;
  font-weight: 500;
  margin: 2.5rem 0 0.75rem;
  text-align: left;
}

article h3 {
  font-size: 0.9rem;
  font-weight: 500;
  margin: 1.5rem 0 0.5rem;
  color: var(--text-dim);
}

article p {
  margin: 0.75rem 0;
  color: var(--text-dim);
}

article strong {
  color: var(--text);
  font-weight: 500;
}

article ul {
  margin: 0.75rem 0;
  padding-left: 1.25rem;
  color: var(--text-dim);
}

article li {
  margin: 0.35rem 0;
}

article pre {
  margin: 1rem 0;
}

/* Docs Layout */
.docs-layout {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 3rem;
  max-width: 900px;
  margin: 0 auto;
}

.docs-sidebar {
  position: sticky;
  top: 2rem;
  height: fit-content;
}

.docs-sidebar ul {
  list-style: none;
}

.docs-sidebar h4 {
  color: var(--text-dim);
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin: 1.5rem 0 0.5rem;
}

.docs-sidebar h4:first-child {
  margin-top: 0;
}

.docs-sidebar li a {
  display: block;
  padding: 0.25rem 0;
  color: var(--text-dim);
  font-size: 0.9rem;
  border: none;
}

.docs-sidebar li a:hover,
.docs-sidebar li a.active {
  color: var(--text);
}

.docs-content h1 {
  font-size: 1.5rem;
  font-weight: 400;
  margin-bottom: 2rem;
}

.docs-content h2 {
  font-size: 1rem;
  font-weight: 500;
  margin: 2rem 0 0.75rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.docs-content h2:first-of-type {
  border-top: none;
  padding-top: 0;
}

.docs-content h3 {
  font-size: 0.9rem;
  font-weight: 500;
  margin: 1.25rem 0 0.5rem;
  color: var(--text-dim);
}

.docs-content p {
  color: var(--text-dim);
  margin: 0.5rem 0;
}

.docs-content pre {
  margin: 0.75rem 0;
}

.docs-content ul, .docs-content ol {
  margin: 0.75rem 0;
  padding-left: 1.25rem;
  color: var(--text-dim);
}

.docs-content li {
  margin: 0.25rem 0;
}

@media (max-width: 700px) {
  .docs-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .docs-sidebar {
    position: static;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.5rem;
  }

  .docs-sidebar h4 {
    width: 100%;
    margin-top: 1rem;
  }

  .docs-sidebar h4:first-child {
    margin-top: 0;
  }

  .docs-sidebar ul {
    display: flex;
    gap: 1rem;
  }
}

/* Footer */
footer {
  border-top: 1px solid var(--border);
  padding: 2rem;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.85rem;
  margin-top: 3rem;
}

footer a {
  color: var(--text-dim);
  border: none;
}

footer a:hover {
  color: var(--text);
}

/* Card */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1.25rem;
}

.card h3 {
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

.card p {
  color: var(--text-dim);
  font-size: 0.9rem;
}

.card ul {
  color: var(--text-dim);
  font-size: 0.9rem;
  padding-left: 1.25rem;
}

.card li {
  margin: 0.25rem 0;
}

/* Authors Page */
.authors-section {
  max-width: 550px;
  margin: 0 auto;
}

.authors-section h1 {
  font-size: 1.5rem;
  font-weight: 400;
  margin-bottom: 2rem;
}

.author-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.5rem 2rem;
  margin-bottom: 1.5rem;
}

.author-card h2 {
  font-size: 1.1rem;
  font-weight: 500;
  margin-bottom: 0.25rem;
}

.author-card h2 a {
  border: none;
}

.author-role {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 1rem;
}

.author-bio {
  font-size: 0.9rem;
  color: var(--text-dim);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.author-cta {
  font-size: 0.9rem;
  color: var(--text-dim);
  line-height: 1.6;
}

.contribute-note {
  font-size: 0.85rem;
  color: var(--text-dim);
  text-align: center;
}

/* Responsive nav */
@media (max-width: 500px) {
  nav .container {
    flex-direction: column;
    gap: 1rem;
  }

  nav ul {
    gap: 1rem;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .hero-logo {
    max-width: 300px;
  }
}