/* heatherhzli.com — shared stylesheet for every page */

:root {
  --paper: #fcfcfa;
  --ink: #1e2320;
  --muted: #5e6661;
  --moss: #4f6b4a;
  --lichen: #dce8d4;
  --rule: #e3e6e1;
  --wide: 76rem;
  --font: "Newsreader", Georgia, "Times New Roman", serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #161917;
    --ink: #e6e9e4;
    --muted: #9aa39c;
    --moss: #a3c29a;
    --lichen: #2f3f2c;
    --rule: #2a2f2b;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  font-size: 1.25rem;
  line-height: 1.6;
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased;
}

.page {
  max-width: var(--wide);
  margin: 0 auto;
  padding: 2.5rem clamp(1.25rem, 5vw, 4rem) 4rem;
}

/* ---------- Header ---------- */
.site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem 2rem;
  margin-bottom: clamp(3rem, 8vw, 6rem);
  font-size: 1.05rem;
}
.site-name { font-weight: 500; text-decoration: none; }
.site-nav { display: flex; flex-wrap: wrap; gap: 0.25rem 1.5rem; }
.site-nav a { color: var(--muted); text-decoration: none; }
.site-nav a:hover,
.site-nav a[aria-current="page"] { color: var(--moss); }

/* ---------- Links ---------- */
a { color: inherit; }
main a {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
  text-decoration-color: var(--moss);
}
main a:hover { background: var(--lichen); }
a:focus-visible {
  outline: 2px solid var(--moss);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ---------- About page: big text beside a photo ---------- */
.about {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: start;
}
.about h1 {
  margin: 0 0 1.5rem;
  font-size: clamp(2.75rem, 7vw, 4rem);
  font-weight: 300;
  line-height: 1.02;
  letter-spacing: -0.02em;
}
.about .lead p {
  margin: 0 0 1.25rem;
  font-size: clamp(1.3rem, 2.1vw, 1.7rem);
  line-height: 1.42;
}
.about .lead .aside {
  margin-top: 2.25rem;
  color: var(--muted);
  font-size: 1.1rem;
}
.portrait {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 4px;
}

/* ---------- Research page: headings on the left, content on the right ---------- */
.page-title {
  margin: 0 0 1.25rem;
  font-size: clamp(2.5rem, 6vw, 4.25rem);
  font-weight: 300;
  line-height: 1.05;
  letter-spacing: -0.02em;
}
.page-intro {
  max-width: 46rem;
  margin: 0 0 4rem;
  font-size: clamp(1.3rem, 2vw, 1.6rem);
  line-height: 1.45;
}
.block {
  display: grid;
  grid-template-columns: 15rem minmax(0, 46rem);
  gap: 0.5rem 3rem;
  padding: 2.25rem 0;
  border-top: 1px solid var(--rule);
}
.block h2 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 500;
  font-style: italic;
  color: var(--moss);
}
.block p { margin: 0 0 1rem; }
.block h3 {
  margin: 0 0 0.25rem;
  font-size: 1.45rem;
  font-weight: 400;
  font-style: italic;
  line-height: 1.3;
}
.meta { color: var(--muted); font-size: 1.05rem; margin: 0 0 1rem; }

.list { list-style: none; margin: 0; padding: 0; }
.list li { margin-bottom: 0.9rem; }
.list .where { display: block; color: var(--muted); font-size: 1.05rem; }

/* ---------- Footer ---------- */
.site-footer {
  margin-top: 5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--rule);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  font-size: 1rem;
  color: var(--muted);
}
.site-footer nav { display: flex; gap: 1.25rem; }
.site-footer a { text-decoration: none; }
.site-footer a:hover { color: var(--moss); }

/* ---------- Post pages (for when they're converted) ---------- */
.post { max-width: 44rem; }
.post-title { font-size: clamp(2rem, 5vw, 3rem); font-weight: 300; line-height: 1.12; margin: 0 0 0.5rem; }
.post-meta { color: var(--muted); font-size: 1rem; margin-bottom: 2.5rem; }
.post blockquote { margin: 1.5rem 0; padding-left: 1.25rem; border-left: 2px solid var(--moss); color: var(--muted); }

/* ---------- Smaller screens ---------- */
@media (max-width: 52rem) {
  .about { grid-template-columns: 1fr; }
  .portrait { max-width: 24rem; }
  .block { grid-template-columns: 1fr; }
}

/* ---------- 404 page ---------- */
.lost { max-width: 44rem; min-height: 50vh; }
.lost h1 {
  margin: 0 0 1.5rem;
  font-size: clamp(2.75rem, 7vw, 5rem);
  font-weight: 300;
  line-height: 1.02;
  letter-spacing: -0.02em;
}
.lost p {
  margin: 0 0 1.25rem;
  font-size: clamp(1.35rem, 2.1vw, 1.75rem);
  line-height: 1.42;
}