:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #111827;
  --muted: #6b7280;
  --link: #0b6cff;
  --border: #e5e7eb;
  --code-bg: #f6f8fa;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0c10;
    --fg: #e5e7eb;
    --muted: #9ca3af;
    --link: #8ab4ff;
    --border: #2a2f3a;
    --code-bg: #111827;
  }
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--link); }

img { max-width: 100%; height: auto; }

.navbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  gap: 1rem;
  align-items: center;
  padding: 0.75rem 1rem;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.nav-head { margin-right: auto; font-weight: 600; }
.navbar a { color: inherit; text-decoration: none; opacity: 0.9; }
.navbar a:hover { opacity: 1; text-decoration: underline; }

.content {
  max-width: 70ch;
  margin: 2rem auto;
  padding: 0 1rem;
}

#blog > h1 {
  margin-top: 0.5rem;
  margin-bottom: 1.25rem;
  font-size: 1.75rem;
}

article {
  margin-bottom: 2.5rem;
}

article h2 {
  margin: 0 0 0.25rem 0;
  font-size: 1.5rem;
}

article small {
  color: var(--muted);
  display: block;
  margin-bottom: 0.75rem;
}

hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

ul, ol { padding-left: 1.25rem; }

pre, code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: 0.95em;
}

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

code {
  background: var(--code-bg);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
}

blockquote {
  margin: 1rem 0;
  padding: 0.5rem 1rem;
  border-left: 3px solid var(--border);
  color: var(--muted);
  background: color-mix(in oklab, var(--code-bg) 60%, transparent);
}

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

/* Tag filter bar */
.tag-filter {
  display: flex;
  align-items: center;
  gap: 0.5rem 0.5rem;
  flex-wrap: wrap;
  margin: 0 0 1rem 0;
}

.tag-btn,
.tag-chip {
  --tag-bg: color-mix(in oklab, var(--code-bg) 70%, transparent);
  --tag-border: var(--border);
  --tag-fg: inherit;
  appearance: none;
  border: 1px solid var(--tag-border);
  background: var(--tag-bg);
  color: var(--tag-fg);
  border-radius: 999px;
  padding: 0.15rem 0.6rem;
  font: inherit;
  font-size: 0.875rem;
  line-height: 1.7;
  cursor: pointer;
}

.tag-btn.is-active,
.tag-chip.is-active {
  background: color-mix(in oklab, var(--link) 18%, transparent);
  border-color: color-mix(in oklab, var(--link) 35%, var(--border));
}

.tag-btn:hover,
.tag-chip:hover {
  border-color: color-mix(in oklab, var(--link) 50%, var(--border));
}

.clear-tags {
  margin-left: auto;
  background: transparent;
  border: 1px dashed var(--border);
  border-radius: 6px;
  padding: 0.25rem 0.5rem;
  color: var(--muted);
  cursor: pointer;
}

.tags {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
  margin: 0.25rem 0 0.75rem 0;
}

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