/* Buildlog — one excellent default theme (spec §6): readable, fast, light/dark. */

:root {
  --accent: #4f46e5;
  --bg: #fdfdfc;
  --fg: #1a1a1a;
  --muted: #6b6b6b;
  --border: #e4e4e0;
  --card: #ffffff;
  --code-bg: #f4f4f2;
  --danger: #b42318;
  --ok: #067647;
  --add-bg: #e6f6ec;
  --add-fg: #067647;
  --del-bg: #fdecea;
  --del-fg: #b42318;
  --radius: 8px;
  --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111113;
    --fg: #ededed;
    --muted: #9b9b9b;
    --border: #2a2a2e;
    --card: #1a1a1e;
    --code-bg: #1f1f24;
    --add-bg: #0c2b1a;
    --add-fg: #4ade80;
    --del-bg: #33150f;
    --del-fg: #f87171;
  }
}

* { box-sizing: border-box; }

html {
  color-scheme: light dark;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 44rem;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.container.wide { max-width: 56rem; }

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

h1, h2, h3, h4 { line-height: 1.25; letter-spacing: -0.015em; }

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

/* ------- header/nav ------- */
.site-header {
  padding: 1.5rem 0 1rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2rem;
}
.site-header .brand {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--fg);
}
.site-header .brand:hover { text-decoration: none; color: var(--accent); }

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1rem;
  align-items: center;
  margin-top: 0.75rem;
  font-size: 0.95rem;
}
.nav a { color: var(--muted); padding: 0.15rem 0; }
.nav a[aria-current="page"] { color: var(--fg); font-weight: 600; }
.nav .spacer { flex: 1; }

/* ------- blog header (reader) ------- */
.blog-header { padding: 2.5rem 0 1.5rem; }
.blog-header h1 { margin: 0 0 0.25rem; font-size: 1.6rem; }
.blog-header .handle { color: var(--muted); font-size: 0.95rem; }
.blog-header .bio { margin: 0.75rem 0 0; color: var(--muted); max-width: 38rem; }
.blog-header .avatar {
  width: 56px; height: 56px; border-radius: 50%;
  object-fit: cover; border: 1px solid var(--border);
}
.blog-header .row { display: flex; gap: 1rem; align-items: center; }

/* ------- post list ------- */
.post-list { list-style: none; margin: 0; padding: 0; }
.post-list li { padding: 1.4rem 0; border-bottom: 1px solid var(--border); }
.post-list h2 { margin: 0 0 0.35rem; font-size: 1.25rem; }
.post-list h2 a { color: var(--fg); }
.post-list h2 a:hover { color: var(--accent); text-decoration: none; }
.post-meta { color: var(--muted); font-size: 0.875rem; display: flex; gap: 0.6rem; flex-wrap: wrap; align-items: center; }
.post-excerpt { margin: 0.5rem 0 0; color: var(--muted); }

.tag-chip {
  display: inline-block;
  font-size: 0.8rem;
  padding: 0.05rem 0.55rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
}
a.tag-chip:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }

.pagination { display: flex; justify-content: space-between; padding: 1.5rem 0; }

/* ------- article prose ------- */
.prose { overflow-wrap: break-word; }
.prose h1 { font-size: 1.75rem; }
.prose h2 { font-size: 1.35rem; margin-top: 2.2rem; }
.prose h3 { font-size: 1.15rem; }
.prose img { max-width: 100%; height: auto; border-radius: var(--radius); }
.prose blockquote {
  margin: 1.25rem 0;
  padding: 0.1rem 1.25rem;
  border-left: 3px solid var(--accent);
  color: var(--muted);
}
.prose code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--code-bg);
  padding: 0.15em 0.35em;
  border-radius: 4px;
}
.prose pre {
  background: var(--code-bg);
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  overflow-x: auto;
  border: 1px solid var(--border);
  font-size: 0.9rem;
  line-height: 1.55;
}
.prose pre code { background: none; padding: 0; font-size: inherit; }
.prose table { border-collapse: collapse; width: 100%; display: block; overflow-x: auto; }
.prose th, .prose td { border: 1px solid var(--border); padding: 0.4rem 0.75rem; text-align: left; }
.prose th { background: var(--code-bg); }

/* ------- cards, forms, buttons ------- */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.4rem;
  margin: 1rem 0;
}

.field { margin: 0 0 1rem; }
.field label { display: block; font-weight: 600; font-size: 0.9rem; margin-bottom: 0.3rem; }
.field .hint { font-weight: 400; color: var(--muted); font-size: 0.85rem; margin-top: 0.25rem; }

input[type="text"], input[type="email"], textarea, select {
  width: 100%;
  font: inherit;
  color: var(--fg);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.5rem 0.75rem;
}
input:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: transparent; }
textarea.body-editor { min-height: 20rem; font-family: var(--font-mono); font-size: 0.9rem; line-height: 1.6; }

.btn {
  display: inline-block;
  font: inherit;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.45rem 1rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--fg);
  cursor: pointer;
}
.btn:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { filter: brightness(1.08); color: #fff; }
.btn.danger { color: var(--danger); }
.btn.danger:hover { border-color: var(--danger); }
.btn.small { font-size: 0.85rem; padding: 0.25rem 0.7rem; }

.btn-row { display: flex; gap: 0.6rem; flex-wrap: wrap; align-items: center; }
form.inline { display: inline; }

.badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.1rem 0.5rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.badge.published { color: var(--ok); border-color: color-mix(in srgb, var(--ok) 40%, transparent); }
.badge.draft { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 40%, transparent); }

.notice {
  border: 1px solid color-mix(in srgb, var(--accent) 45%, transparent);
  background: color-mix(in srgb, var(--accent) 7%, var(--bg));
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  margin: 1rem 0;
}
.notice.error {
  border-color: color-mix(in srgb, var(--danger) 45%, transparent);
  background: color-mix(in srgb, var(--danger) 7%, var(--bg));
}

.token-reveal {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  word-break: break-all;
  background: var(--code-bg);
  border: 1px dashed var(--accent);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
}

/* ------- diff ------- */
.diff { font-family: var(--font-mono); font-size: 0.82rem; line-height: 1.5; border: 1px solid var(--border); border-radius: var(--radius); overflow-x: auto; }
.diff .line { padding: 0 0.75rem; white-space: pre-wrap; }
.diff .add { background: var(--add-bg); color: var(--add-fg); }
.diff .del { background: var(--del-bg); color: var(--del-fg); text-decoration: line-through; }

/* ------- tables (dashboard) ------- */
table.list { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
table.list th, table.list td { text-align: left; padding: 0.55rem 0.6rem; border-bottom: 1px solid var(--border); vertical-align: top; }
table.list th { color: var(--muted); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.04em; }

.muted { color: var(--muted); }
.small { font-size: 0.875rem; }
.mono { font-family: var(--font-mono); }

footer.site-footer {
  margin: 4rem 0 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.875rem;
}

/* landing */
.hero { padding: 4rem 0 2rem; }
.hero h1 { font-size: 2.3rem; margin-bottom: 0.75rem; }
.hero .sub { font-size: 1.2rem; color: var(--muted); max-width: 36rem; }
.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 1rem; margin: 2rem 0; }