/* Portman AI — site styles */
:root {
  --bg: #ffffff;
  --ink: #1a1a1a;
  --ink-soft: #50555c;
  --ink-faint: #8a8f96;
  --accent: #1f4fd8;
  --border: #e6e6e6;
  --code-bg: #f5f4f1;
  --pre-bg: #14171f;
  --pre-ink: #e8eaf0;
  --max: 42rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15171a;
    --ink: #e6e8eb;
    --ink-soft: #a7adb5;
    --ink-faint: #767c84;
    --accent: #8ab0ff;
    --border: #2a2d31;
    --code-bg: #22262b;
    --pre-bg: #0e1116;
    --pre-ink: #dfe3ea;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 18px/1.7 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header */
header.site {
  padding: 1.5rem 0 0.5rem;
}
header.site .wrap {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.brand {
  font-weight: 700;
  letter-spacing: -0.01em;
  text-decoration: none;
  color: var(--ink);
  font-size: 1.1rem;
}
nav.site a {
  color: var(--ink-soft);
  text-decoration: none;
  margin-left: 1.1rem;
  font-size: 0.95rem;
}
nav.site a:hover, nav.site a[aria-current="page"] { color: var(--ink); }

/* Intro / page top */
.hero { padding: 2.5rem 0 0.5rem; }
.hero h1 {
  font-size: 1.9rem;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin: 0 0 0.9rem;
}
.hero p.lede {
  font-size: 1.05rem;
  color: var(--ink-soft);
  margin: 0 0 1rem;
}

/* Sections */
section { padding: 1.5rem 0; }
h2 { font-size: 1.3rem; letter-spacing: -0.01em; margin: 0 0 0.9rem; }
h3 { font-size: 1.05rem; margin: 0 0 0.35rem; }
p { margin: 0 0 1rem; }
a { color: var(--accent); }
main p a, main li a { text-decoration-thickness: 1px; text-underline-offset: 2px; }

/* Post list */
ul.posts { list-style: none; padding: 0; margin: 0; }
ul.posts li {
  display: flex;
  gap: 1.25rem;
  align-items: baseline;
  padding: 0.45rem 0;
}
ul.posts .date {
  color: var(--ink-faint);
  font-size: 0.85rem;
  font-variant-numeric: tabular-nums;
  flex: 0 0 6.5rem;
  white-space: nowrap;
}
ul.posts a {
  font-weight: 600;
  text-decoration: none;
  color: var(--ink);
}
ul.posts a:hover { color: var(--accent); text-decoration: underline; }

@media (max-width: 480px) {
  ul.posts li { flex-direction: column; gap: 0.1rem; padding: 0.6rem 0; }
}

/* Article */
article.post { padding-top: 1rem; }
article.post h1 { font-size: 1.75rem; line-height: 1.25; letter-spacing: -0.02em; margin-bottom: 0.4rem; }
article.post .meta { color: var(--ink-faint); font-size: 0.9rem; margin-bottom: 2rem; }
article.post h2 { margin-top: 2.2rem; }
article.post h3 { margin-top: 1.6rem; }
article.post pre {
  background: var(--pre-bg);
  color: var(--pre-ink);
  padding: 1rem 1.2rem;
  border-radius: 8px;
  overflow-x: auto;
  font-size: 0.85rem;
  line-height: 1.55;
}
.backlink { font-size: 0.9rem; margin: 0.5rem 0 0; }
.backlink a { text-decoration: none; color: var(--ink-faint); }
.backlink a:hover { color: var(--accent); }

/* Tables */
.table-scroll { overflow-x: auto; margin: 0 0 1rem; }
table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.92rem;
}
th, td {
  text-align: left;
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
th { color: var(--ink-soft); font-weight: 600; }

/* Inline code */
p code, li code, td code {
  background: var(--code-bg);
  border-radius: 4px;
  padding: 0.1em 0.35em;
  font-size: 0.85em;
}

/* Footer */
footer.site {
  border-top: 1px solid var(--border);
  margin-top: 3rem;
  padding: 1.5rem 0 2.5rem;
  color: var(--ink-faint);
  font-size: 0.9rem;
}
footer.site a { color: var(--ink-soft); }

@media (max-width: 480px) {
  .hero { padding: 1.8rem 0 0.5rem; }
  .hero h1 { font-size: 1.55rem; }
}