/* jasoncheng.io — editorial layout for project case studies */

:root {
  --bg: #fdfcfa;
  --surface: #f5f2ec;
  --text: #1c1917;
  --muted: #57534e;
  --faint: #78716c;
  --border: #e7e2d9;
  --accent: #a8541b;

  --serif: ui-serif, Georgia, Cambria, "Times New Roman", serif;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --prose: 52rem;
  --wide: 68rem;
  --page: 84rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14120f;
    --surface: #1e1b17;
    --text: #eae7e1;
    --muted: #a8a29e;
    --faint: #8b847d;
    --border: #322d26;
    --accent: #e8974a;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--serif);
  font-size: 1.125rem;
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
}

/* ---------------------------------------------------------------- chrome */

.skip {
  position: absolute;
  left: -9999px;
}
.skip:focus {
  left: 1rem;
  top: 1rem;
  z-index: 10;
  background: var(--accent);
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: 4px;
}

.site-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
  max-width: var(--page);
  margin: 0 auto;
  padding: 1.75rem clamp(1.25rem, 4vw, 3rem);
  border-bottom: 1px solid var(--border);
}

.site-name {
  font-family: var(--sans);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  text-decoration: none;
  color: var(--text);
}

.site-header nav {
  display: flex;
  gap: 1.5rem;
  font-family: var(--sans);
  font-size: 0.92rem;
}

.site-header nav a {
  color: var(--muted);
  text-decoration: none;
}
.site-header nav a:hover { color: var(--accent); }

.site-footer {
  max-width: var(--page);
  margin: 5rem auto 0;
  padding: 2rem clamp(1.25rem, 4vw, 3rem) 3rem;
  border-top: 1px solid var(--border);
  font-family: var(--sans);
  font-size: 0.9rem;
  color: var(--muted);
}

/* ----------------------------------------------------------------- prose */

.prose {
  max-width: var(--prose);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 2rem);
}

.project { padding-top: clamp(2.5rem, 6vw, 4.5rem); }

h1, h2, h3, h4 {
  font-family: var(--sans);
  line-height: 1.15;
  letter-spacing: -0.021em;
  margin: 0 0 0.5em;
}

h1 {
  font-size: clamp(2.25rem, 5.5vw, 3.4rem);
  font-weight: 700;
}

h2 {
  font-size: clamp(1.45rem, 3vw, 1.85rem);
  font-weight: 650;
  margin-top: 2.75em;
}

h3 { font-size: 1.25rem; font-weight: 650; }

.prose p { margin: 0 0 1.35em; }

.prose a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 2.5px;
}

.anchor {
  color: inherit;
  text-decoration: none;
}
.anchor:hover { color: var(--accent); }

.eyebrow {
  font-family: var(--sans);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--faint);
  margin: 0 0 0.9rem;
}

.lede {
  font-size: 1.3rem;
  line-height: 1.5;
  color: var(--muted);
  margin: 0 0 1.5rem;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  padding: 0;
  margin: 0 0 1rem;
  font-family: var(--sans);
  font-size: 0.82rem;
}

.tags li {
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 0.2rem 0.75rem;
  color: var(--muted);
  background: var(--surface);
}

.prose ul:not(.tags) { padding-left: 1.2em; }
.prose li { margin-bottom: 0.4em; }

/* --------------------------------------------------------------- figures */

.figure {
  margin: 2.5rem auto;
  max-width: var(--prose);
  padding: 0 clamp(1.25rem, 4vw, 2rem);
}

.figure--wide { max-width: var(--wide); }
.figure--hero {
  max-width: var(--page);
  margin: clamp(2rem, 5vw, 3rem) auto clamp(2.5rem, 6vw, 4rem);
}

.figure img,
.figure picture {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 6px;
  background: var(--surface);
}

.figure--hero img { border-radius: 8px; }

figcaption {
  font-family: var(--sans);
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--faint);
  margin-top: 0.7rem;
}

.gallery {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: 1fr;
}

@media (min-width: 40rem) {
  .gallery--2 { grid-template-columns: 1fr 1fr; }
  .gallery--3 { grid-template-columns: repeat(3, 1fr); }
}

/* ---------------------------------------------------------------- embeds */

.embed {
  position: relative;
  aspect-ratio: 4 / 3;
  width: 100%;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--surface);
}

@media (min-width: 48rem) {
  .embed { aspect-ratio: 16 / 10; }
}

.embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* ----------------------------------------------------------------- files */

.files { margin-top: 3rem; }

.filelink {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--sans);
  font-size: 0.95rem;
  text-decoration: none;
  color: var(--text);
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 6px;
  padding: 0.6rem 1.1rem;
  margin: 0 0.5rem 0.5rem 0;
}

.filelink::before { content: "↓"; color: var(--accent); font-weight: 700; }
.filelink:hover { border-color: var(--accent); color: var(--accent); }

/* ------------------------------------------------------------ index page */

.hero {
  padding-top: clamp(3rem, 9vw, 6rem);
  padding-bottom: clamp(1rem, 3vw, 2rem);
}

.section { padding: 2rem 0 3rem; }

.cards {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2rem);
  grid-template-columns: repeat(auto-fill, minmax(min(20rem, 100%), 1fr));
  max-width: var(--page);
  margin: 1.5rem auto 0;
  padding: 0 clamp(1.25rem, 4vw, 3rem);
}

.card {
  display: block;
  text-decoration: none;
  color: inherit;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  background: var(--surface);
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.card:hover { border-color: var(--accent); transform: translateY(-2px); }

.card img { display: block; width: 100%; height: 14rem; object-fit: cover; }

.card-body { padding: 1.25rem 1.4rem 1.5rem; }
.card-body h3 { margin: 0 0 0.4rem; }
.card-body p { margin: 0; font-size: 0.98rem; color: var(--muted); line-height: 1.55; }
.card-body .eyebrow { margin-bottom: 0.5rem; }

.missing {
  font-family: var(--sans);
  color: #b91c1c;
  border: 1px dashed currentColor;
  padding: 1rem;
  border-radius: 6px;
}