/* Shared styles for the home page and project pages. */

:root {
  --bg: #fdfdfc;
  --text: #1f2328;
  --muted: #5f6670;
  --rule: #e3e3e0;
  --link: #1d4f91;
  --link-hover: #0f3466;
  --max-width: 44rem;
  --serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16181b;
    --text: #e4e6e9;
    --muted: #9aa1aa;
    --rule: #2d3136;
    --link: #8ab4f0;
    --link-hover: #b5d0f7;
  }
}

*, *::before, *::after { box-sizing: border-box; }

html { font-size: 100%; }

body {
  margin: 0;
  padding: 3rem 1.25rem 2rem;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
}

main, .site-footer, .crumb {
  max-width: var(--max-width);
  margin: 0 auto;
}

h1, h2, h3 {
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.25;
}

h1 { font-size: 2.1rem; margin: 0 0 0.25rem; }

h2 {
  font-size: 1.35rem;
  margin: 2.75rem 0 1rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--rule);
}

h3 { font-size: 1.1rem; margin: 0 0 0.2rem; }

p { margin: 0 0 1rem; }

a { color: var(--link); text-decoration: none; }
a:hover, a:focus-visible { color: var(--link-hover); text-decoration: underline; }

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

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

/* ---- Home page header: photo + name + bio ---- */

.intro {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
}

.intro .headshot {
  flex: 0 0 auto;
  width: 10rem;
  height: 10rem;
  border-radius: 50%;
  object-fit: cover;
  background: var(--rule);
}

.intro .tagline {
  margin: 0 0 1rem;
  color: var(--muted);
}

.contact {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1.25rem;
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
  font-size: 0.95rem;
}

@media (max-width: 36rem) {
  body { padding-top: 2rem; }
  .intro { flex-direction: column; align-items: center; text-align: center; gap: 1.25rem; }
  .intro p:not(.tagline) { text-align: left; }
  .contact { justify-content: center; }
}

/* ---- Project list ---- */

.projects {
  list-style: none;
  margin: 0;
  padding: 0;
}

.projects > li { margin: 0 0 1.5rem; }

.projects p { margin: 0.15rem 0 0; }

.projects .meta {
  font-size: 0.9rem;
  color: var(--muted);
}

.projects .links {
  display: flex;
  flex-wrap: wrap;
  gap: 0 0.45rem;
  font-size: 0.92rem;
  margin-top: 0.25rem;
}

.projects .links a + a::before {
  content: "·";
  color: var(--muted);
  margin-right: 0.45rem;
  display: inline-block;
}

/* ---- Project pages ---- */

.crumb { font-size: 0.95rem; margin-bottom: 2rem; }

.page-meta { color: var(--muted); margin: 0 0 2rem; }

.figure { margin: 1.5rem 0; }
.figure img { display: block; border: 1px solid var(--rule); }
.figure figcaption { font-size: 0.9rem; color: var(--muted); margin-top: 0.4rem; }

.figure-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 1rem;
}

.embed {
  width: 100%;
  aspect-ratio: 8.5 / 11;
  border: 1px solid var(--rule);
}

/* ---- Footer ---- */

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

/* Side-by-side photos at equal height; set each figure's flex to its width/height ratio. */
.photo-pair { display: flex; gap: 1rem; align-items: flex-start; }
.photo-pair .figure { min-width: 0; }
.photo-pair img { width: 100%; }

@media (max-width: 36rem) {
  .photo-pair { flex-direction: column; }
}

/* ---- Section links (e.g. /#software) ---- */

section, .projects > li { scroll-margin-top: 1.5rem; }

h2 .anchor {
  font-weight: 400;
  color: var(--muted);
  opacity: 0;
  transition: opacity 0.15s;
}
h2:hover .anchor, h2 .anchor:focus-visible { opacity: 1; text-decoration: none; }
@media (hover: none) { h2 .anchor { opacity: 0.5; } }

/* Briefly highlight a project when someone arrives via its link. */
.projects > li:target {
  animation: target-flash 2.5s ease-out;
  border-radius: 4px;
}
@keyframes target-flash {
  from { background: color-mix(in srgb, var(--link) 14%, transparent); }
  to { background: transparent; }
}