.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--accent);
  color: #fff;
  padding: 8px 16px;
  z-index: 100;
  transition: top 0.2s;
  text-decoration: none;
  font-size: 0.875rem;
}
.skip-link:focus {
  top: 0;
}

:root {
  --bg: #0d1117;
  --fg: #c9d1d9;
  --accent: #58a6ff;
  --muted: #8b949e;
  --border: #30363d;
  --code-bg: #161b22;
  --font-mono: 'SF Mono', Monaco, 'Cascadia Code', monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #ffffff;
    --fg: #24292f;
    --accent: #0969da;
    --muted: #57606a;
    --border: #d0d7de;
    --code-bg: #f6f8fa;
  }
}

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

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  max-width: 720px;
  margin: 0 auto;
  padding: 0 1rem;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* --- header & nav --- */

header {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2rem;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

.logo {
  font-family: var(--font-mono);
  font-weight: bold;
  font-size: 1.25rem;
  color: var(--fg);
}

.nav-links { display: flex; gap: 1.5rem; align-items: center; }

.nav-toggle { display: none; }
.nav-toggle-label { display: none; cursor: pointer; color: var(--accent); font-family: var(--font-mono); }

@media (max-width: 600px) {
  .nav-toggle-label { display: block; }
  .nav-links {
    display: none;
    flex-direction: column;
    width: 100%;
    gap: 0.75rem;
    padding-top: 1rem;
  }
  .nav-toggle:checked ~ .nav-links { display: flex; }
  .dropdown-menu {
    position: static !important;
    box-shadow: none !important;
    border: none !important;
    background: transparent !important;
    padding: 0 0 0 1rem !important;
  }
}

/* --- dropdown --- */

.dropdown { position: relative; }

.dropdown-toggle {
  color: var(--accent);
  cursor: pointer;
}

.dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.5rem 0;
  min-width: 180px;
  z-index: 100;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.dropdown:hover .dropdown-menu,
.dropdown:focus-within .dropdown-menu {
  display: block;
}

.dropdown-menu a {
  display: block;
  padding: 0.4rem 1rem;
  color: var(--fg);
  font-size: 0.9rem;
}

.dropdown-menu a:hover {
  background: var(--code-bg);
  text-decoration: none;
  color: var(--accent);
}

/* --- main --- */

main { padding: 2rem 0; }

h1, h2, h3 { margin: 1.5rem 0 1rem; line-height: 1.3; }
h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; border-bottom: 1px solid var(--border); padding-bottom: 0.5rem; }
h3 { font-size: 1.2rem; border: none; }
p { margin: 1rem 0; }
ul, ol { margin: 1rem 0; padding-left: 1.5rem; }
li { margin: 0.25rem 0; }

code {
  font-family: var(--font-mono);
  background: var(--code-bg);
  padding: 0.2em 0.4em;
  border-radius: 4px;
  font-size: 0.9em;
}

pre {
  background: var(--code-bg);
  padding: 1rem;
  border-radius: 6px;
  overflow-x: auto;
  margin: 1rem 0;
}

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

/* --- tables --- */

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.95rem;
}

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

th {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: lowercase;
}

td code {
  font-size: 0.85em;
}

/* --- hero --- */

.hero { text-align: center; padding: 2rem 0; }
.hero h1 { font-size: 3rem; font-family: var(--font-mono); margin-bottom: 0.5rem; }
.tagline { font-size: 1.25rem; color: var(--muted); }
.mission { font-size: 1.1rem; margin-top: 1rem; }

.cta { display: flex; gap: 1rem; justify-content: center; margin-top: 2rem; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 0.6rem 1.2rem;
  background: var(--accent);
  color: var(--bg);
  border-radius: 6px;
  font-weight: 500;
}

.btn:hover { text-decoration: none; opacity: 0.9; }

.btn-secondary { background: var(--border); color: var(--fg); }

/* --- works with --- */

.works-with { text-align: center; padding: 1.5rem 0; }
.works-with h2 { border: none; font-size: 1rem; color: var(--muted); margin-bottom: 0.5rem; }
.tools { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.tools a { color: var(--accent); }

/* --- what is --- */

.what-is pre { text-align: center; font-size: 1.1rem; }

/* --- features --- */

.features ul { list-style: none; padding: 0; }
.features li { padding: 0.5rem 0; padding-left: 1.5rem; position: relative; }
.features li::before { content: "→"; position: absolute; left: 0; color: var(--accent); }
.features li a { font-weight: 500; }

/* --- post list --- */

.post-list { list-style: none; padding: 0; }
.post-list li { display: flex; justify-content: space-between; align-items: baseline; padding: 0.5rem 0; border-bottom: 1px solid var(--border); }
.post-list time { color: var(--muted); font-size: 0.875rem; white-space: nowrap; margin-left: 1rem; }

/* --- blog post --- */

.post-header { margin-bottom: 2rem; }
.post-header h1 { margin-bottom: 0.5rem; }
.post-header time { color: var(--muted); }
.tags { margin-top: 0.5rem; }
.tag {
  display: inline-block;
  background: var(--border);
  padding: 0.2em 0.6em;
  border-radius: 4px;
  font-size: 0.75rem;
  margin-right: 0.5rem;
}

.post-content { font-size: 1.05rem; }
.post-content h2 { margin-top: 2rem; }
.post-content ul, .post-content ol { margin: 1rem 0; padding-left: 1.5rem; }
.post-content li { margin: 0.5rem 0; }

.post-footer { margin-top: 2rem; padding-top: 1rem; border-top: 1px solid var(--border); color: var(--muted); }

/* --- blog index --- */

.blog-index .post-item {
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}
.blog-index .post-item h2 {
  border: none;
  padding: 0;
  margin: 0;
  font-size: 1.25rem;
}
.blog-index .post-item h2 a { color: var(--fg); }
.blog-index .post-item h2 a:hover { color: var(--accent); }

/* --- pagination --- */

.pagination {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.pagination ul {
  list-style: none;
  padding: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.pagination li {
  margin: 0;
}

.pagination a {
  padding: 0.5rem 1rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.9rem;
}

.pagination a:hover {
  background: var(--code-bg);
  text-decoration: none;
}

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

/* --- changelog --- */

.changelog-item { padding: 1.5rem 0; border-bottom: 1px solid var(--border); }
.changelog-item h2 { border: none; padding: 0; margin: 0; font-size: 1.25rem; font-family: var(--font-mono); }
.changelog-item .date { color: var(--muted); font-size: 0.875rem; }
.changelog-item ul { margin: 0.5rem 0 0 1.5rem; }

/* --- tool grid (docs index) --- */

.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

.tool-card {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem;
}

.tool-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
}

.tool-card p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--muted);
}

/* --- integration level badge --- */

.integration-level {
  display: inline-block;
  background: var(--code-bg);
  padding: 0.3em 0.8em;
  border-radius: 4px;
  font-size: 0.9rem;
  color: var(--muted);
}

.integration-level strong { color: var(--accent); }

/* --- 404 --- */

.four-oh-four {
  text-align: center;
  padding: 4rem 0;
}

.four-oh-four h1 {
  font-family: var(--font-mono);
  font-size: 6rem;
  color: var(--muted);
}

/* --- footer --- */

footer {
  text-align: center;
  padding: 2rem 0;
  border-top: 1px solid var(--border);
  margin-top: 3rem;
  color: var(--muted);
}

footer .links { margin-top: 0.5rem; }

/* --- tag index --- */
.tag-index { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 1.5rem 0; }
.tag-pill {
  display: inline-flex; align-items: center;
  padding: 0.375rem 0.75rem; border-radius: 9999px;
  background: var(--code-bg); color: var(--fg);
  font-size: 0.875rem; text-decoration: none;
  transition: background-color 0.15s;
}
.tag-pill:hover { background: var(--accent); color: #fff; }

/* --- post list (tag pages) --- */
.post-list { list-style: none; padding: 0; }
.post-list-item { padding: 1rem 0; border-bottom: 1px solid var(--border); }
.post-list-item time { font-size: 0.875rem; color: var(--muted); margin-right: 0.75rem; }
.post-list-item a { font-size: 1.125rem; }
.post-list-item p { margin: 0.25rem 0 0; color: var(--muted); font-size: 0.875rem; }

/* --- category badge --- */
.category {
  display: inline-block;
  padding: 0.125rem 0.5rem;
  border-radius: 0.25rem;
  background: var(--accent);
  color: #fff;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-left: 0.5rem;
  vertical-align: middle;
}