/* Same color tokens and spacing scale as the portfolio page (index.html),
   so the blog reads as part of the same site. Change them in both places. */
:root {
  --bg: #F4FAF0;
  --surface: #FFFFFF;
  --ink: #034732;
  --faint: #3E5B4F;
  --line: #C7DDC0;
  --g1: #007A43;
  --code-bg: #E7F1E2;
  --plum: #3C1642;
  --plum-bg: #F0E6F5;

  --s-1: 0.5rem;
  --s-2: 1rem;
  --s-3: 1.75rem;
  --s-4: 2.75rem;
  --s-5: 4rem;
}
[data-theme="dark"] {
  --bg: #150A18;
  --surface: #221228;
  --ink: #EFF6EA;
  --faint: #C3B4CB;
  --line: #402A48;
  --g1: #B2FFA9;
  --code-bg: #24152A;
  --plum: #D9B8E8;
  --plum-bg: #2E1734;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: "Public Sans", -apple-system, "Segoe UI", sans-serif;
  font-size: 1.0625rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration-color: var(--g1); text-underline-offset: 3px; }
a:hover { color: var(--g1); }
:focus-visible { outline: 3px solid var(--g1); outline-offset: 3px; border-radius: 3px; }
.wrap { max-width: 42rem; margin: 0 auto; padding-inline: 1.5rem; }

/* ---------- header / footer ---------- */
body > header { border-bottom: 1px solid var(--line); }
.topline {
  display: flex; justify-content: space-between; align-items: center;
  padding-block: var(--s-1);
  font-weight: 700; font-size: 0.95rem;
}
.topline .home { text-decoration: none; }
.topline nav { display: flex; align-items: center; gap: var(--s-3); }
.topline nav a { text-decoration: none; }
#theme-btn {
  background: none; border: 1px solid var(--line); color: var(--ink);
  border-radius: 99px; width: 2.3rem; height: 2.3rem;
  font-size: 1rem; cursor: pointer; line-height: 1;
}
#theme-btn:hover { border-color: var(--g1); }

main { padding-block: var(--s-5); }
footer { border-top: 1px solid var(--line); padding-block: var(--s-2) var(--s-3); font-size: 0.9rem; color: var(--faint); }

/* ---------- index ---------- */
.page-title { font-size: 2.2rem; font-weight: 900; letter-spacing: -0.02em; line-height: 1.15; }
.lede { color: var(--faint); margin-top: var(--s-1); }
.post-list { list-style: none; margin-top: var(--s-4); display: grid; gap: var(--s-3); }
.post-list a { font-size: 1.2rem; font-weight: 800; text-decoration: none; }
.post-list time { display: block; font-size: 0.9rem; color: var(--faint); margin-top: 0.15rem; }
.post-list p { color: var(--faint); margin-top: var(--s-1); }
.empty { margin-top: var(--s-4); color: var(--faint); }

.draft-flag {
  display: inline-block; font-size: 0.8rem; font-weight: 700;
  color: var(--plum); background: var(--plum-bg);
  padding: 0.15rem 0.65rem; border-radius: 99px;
  margin-bottom: var(--s-2);
}
.draft-flag.inline { margin: 0 0 0 var(--s-1); vertical-align: middle; }

/* ---------- post ---------- */
.post-head h1 { font-size: clamp(1.9rem, 5vw, 2.5rem); font-weight: 900; letter-spacing: -0.02em; line-height: 1.15; }
.post-head time { display: block; color: var(--faint); font-size: 0.95rem; margin-top: var(--s-1); }

.prose { margin-top: var(--s-4); }
.prose > * + * { margin-top: var(--s-2); }
.prose h2 { font-size: 1.35rem; font-weight: 800; line-height: 1.3; margin-top: var(--s-4); }
.prose h3 { font-size: 1.1rem; font-weight: 800; margin-top: var(--s-3); }
.prose ul, .prose ol { padding-left: 1.4rem; }
.prose li + li { margin-top: 0.35rem; }
.prose blockquote { border-left: 3px solid var(--g1); padding-left: var(--s-2); color: var(--faint); }
.prose img { max-width: 100%; height: auto; }
.prose code {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.88em;
  background: var(--code-bg);
  padding: 0.1em 0.35em; border-radius: 4px;
}
.prose pre {
  background: var(--code-bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: var(--s-2);
  overflow-x: auto;
  line-height: 1.55;
}
.prose pre code { background: none; padding: 0; font-size: 0.85rem; }

.back { margin-top: var(--s-5); font-weight: 700; }