/* ---------- Design tokens ---------- */
:root {
  --bg: #faf8f3;
  --bg-alt: #f1ede2;
  --ink: #2b2e28;
  --ink-soft: #565a4f;
  --forest: #2f4538;
  --sage: #7c9885;
  --sage-soft: #c7d3c4;
  --clay: #b96b48;
  --line: #ddd6c4;
  --max-w: 46rem;
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.75rem;
  --space-4: 3rem;
  --space-5: 5rem;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

* { box-sizing: border-box; }

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

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1.0625rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: "Fraunces", Georgia, serif;
  font-weight: 500;
  color: var(--forest);
  line-height: 1.25;
  margin: 0 0 var(--space-2);
}

h1 { font-size: clamp(2.1rem, 4.5vw, 3rem); font-weight: 400; }
h2 { font-size: clamp(1.4rem, 3vw, 1.8rem); }
h3 { font-size: 1.15rem; margin-bottom: 0.35rem; }

p { margin: 0 0 var(--space-2); color: var(--ink); }

a {
  color: var(--forest);
  text-decoration-color: var(--sage-soft);
  text-underline-offset: 3px;
  transition: color 0.2s var(--ease), text-decoration-color 0.2s var(--ease);
}
a:hover, a:focus-visible { color: var(--clay); text-decoration-color: var(--clay); }
a:focus-visible { outline: 2px solid var(--sage); outline-offset: 3px; }

.skip-link {
  position: absolute;
  left: -999px;
  top: auto;
  background: var(--forest);
  color: var(--bg);
  padding: 0.6em 1em;
  border-radius: 0.3em;
  z-index: 100;
}
.skip-link:focus {
  left: var(--space-2);
  top: var(--space-2);
}

/* ---------- Layout shells ---------- */
.wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--space-3);
}

header.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-2);
  padding-bottom: var(--space-2);
  max-width: 54rem;
}

.brand {
  font-family: "Fraunces", serif;
  font-size: 1.05rem;
  color: var(--forest);
  text-decoration: none;
  letter-spacing: 0.01em;
}

nav.site-nav ul {
  display: flex;
  gap: var(--space-3);
  list-style: none;
  margin: 0;
  padding: 0;
}

nav.site-nav a {
  font-size: 0.9rem;
  color: var(--ink-soft);
  text-decoration: none;
}
nav.site-nav a:hover, nav.site-nav a:focus-visible { color: var(--forest); }

/* ---------- Hero ---------- */
.hero {
  padding: var(--space-5) 0 var(--space-4);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: -20% -10% auto -10%;
  height: 140%;
  background: radial-gradient(60% 60% at 30% 20%, var(--sage-soft) 0%, transparent 70%);
  opacity: 0.55;
  filter: blur(10px);
  animation: drift 42s ease-in-out infinite alternate;
  pointer-events: none;
  z-index: -1;
}

@keyframes drift {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to   { transform: translate3d(2%, 3%, 0) scale(1.05); }
}

.eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--sage);
  margin-bottom: var(--space-2);
}

.hero .role {
  font-size: 1.1rem;
  color: var(--ink-soft);
  max-width: 34rem;
}

.hero .tagline {
  font-size: 1.15rem;
  color: var(--ink);
  max-width: 36rem;
  margin-top: var(--space-3);
}

/* ---------- Hero artwork ---------- */
.hero .hero-wrap {
  max-width: 62rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  align-items: center;
}

@media (min-width: 880px) {
  .hero .hero-wrap {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    gap: var(--space-3);
  }
}

.hero-art {
  position: relative;
  justify-self: center;
  width: min(15rem, 72vw);
  isolation: isolate;
}

@media (min-width: 880px) {
  .hero-art { width: 100%; max-width: 21rem; justify-self: end; }
}

/* soft moonlit halo behind the frame */
.hero-art::after {
  content: "";
  position: absolute;
  inset: 6% 2% -6%;
  border-radius: 1.4rem;
  background: radial-gradient(60% 60% at 50% 50%, rgba(86, 132, 178, 0.5) 0%, transparent 70%);
  filter: blur(26px);
  opacity: 0.55;
  z-index: -1;
}

/* shared framing for the hand-drawn illustrations */
.hero-bird,
.about-portrait img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 0.85rem;
  border: 1px solid var(--line);
  box-shadow:
    0 18px 40px -24px rgba(23, 35, 28, 0.55),
    0 3px 10px -6px rgba(23, 35, 28, 0.3);
}

/* ---------- About portrait ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  align-items: start;
}

@media (min-width: 820px) {
  .about-wrap { max-width: 58rem; }
  .about-grid { grid-template-columns: minmax(0, 1fr) 15rem; }
}

.about-portrait {
  margin: 0;
  justify-self: center;
  width: min(14rem, 62vw);
}

@media (min-width: 820px) {
  .about-portrait { width: 100%; }
}

/* ---------- Sections ---------- */
section {
  padding: var(--space-4) 0;
  border-top: 1px solid var(--line);
}

section:first-of-type { border-top: none; }

.divider {
  display: flex;
  justify-content: center;
  margin: 0;
  color: var(--sage);
  opacity: 0.7;
}
.divider svg { width: 84px; height: auto; }

/* reveal-on-scroll */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ---------- Cards / lists ---------- */
.grid {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .grid.two-col { grid-template-columns: 1fr 1fr; }
}

.card {
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: 0.6rem;
  padding: var(--space-3);
}

.card h3 { color: var(--forest); }
.card .card-link {
  margin-top: 0.6rem;
  font-size: 0.95rem;
  font-weight: 500;
}
.card .meta {
  display: block;
  font-size: 0.85rem;
  color: var(--sage);
  margin-bottom: 0.4rem;
  letter-spacing: 0.02em;
}

.values-note {
  border-left: 3px solid var(--sage);
  padding-left: var(--space-3);
  color: var(--ink-soft);
  font-style: italic;
}

/* ---------- Tools page ---------- */
.page-head {
  padding: var(--space-5) 0 var(--space-4);
  border-top: none;
}

.page-head .tagline {
  font-size: 1.15rem;
  max-width: 38rem;
  margin-top: var(--space-3);
}

.page-note {
  font-size: 0.9rem;
  color: var(--ink-soft);
  max-width: 38rem;
}

.tool-grid { margin-top: var(--space-3); }

.card.tool h3 { margin-bottom: 0.45rem; }

.card.tool h3 a {
  text-decoration: none;
  border-bottom: 1px solid var(--sage-soft);
  padding-bottom: 1px;
}
.card.tool h3 a:hover,
.card.tool h3 a:focus-visible { border-bottom-color: var(--clay); }

.card.tool code {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
  font-size: 0.86em;
  background: color-mix(in srgb, var(--forest) 8%, transparent);
  padding: 0.1em 0.35em;
  border-radius: 0.25rem;
}

.card.tool p {
  font-size: 0.95rem;
  color: var(--ink-soft);
  margin-bottom: 0;
}

/* current page marker in the nav */
nav.site-nav a[aria-current="page"] {
  color: var(--forest);
  border-bottom: 1px solid var(--sage);
  padding-bottom: 2px;
}

/* ---------- Contact ---------- */
.contact-list {
  list-style: none;
  padding: 0;
  margin: var(--space-2) 0 0;
}
.contact-list li {
  display: flex;
  gap: 0.6rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.98rem;
}
.contact-list li:last-child { border-bottom: none; }
.contact-list span.label {
  width: 7rem;
  flex-shrink: 0;
  color: var(--sage);
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  padding-top: 0.15rem;
}

/* ---------- Footer ---------- */
footer.site-footer {
  padding: var(--space-4) 0 var(--space-5);
  text-align: center;
  color: var(--ink-soft);
  font-size: 0.85rem;
}
footer.site-footer .leaf { opacity: 0.6; margin-bottom: var(--space-2); }

.art-credit {
  font-size: 0.78rem;
  color: var(--ink-soft);
  opacity: 0.85;
  margin: var(--space-1) 0 0;
}

/* ---------- Writings ---------- */
.byline {
  font-size: 0.9rem;
  color: var(--ink-soft);
  margin: 0;
}

.byline time { white-space: nowrap; }

.draft-flag {
  display: inline-block;
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--clay);
  border: 1px solid color-mix(in srgb, var(--clay) 40%, transparent);
  background: color-mix(in srgb, var(--clay) 8%, transparent);
  border-radius: 0.3rem;
  padding: 0.2em 0.6em;
  margin: 0 0 var(--space-2);
}

/* article body */
.prose { padding-bottom: var(--space-4); }

.prose > :first-child { margin-top: 0; }

.prose p { margin: 0 0 var(--space-2); }

.prose h2 {
  font-size: clamp(1.25rem, 2.4vw, 1.5rem);
  margin: var(--space-4) 0 var(--space-2);
}

.prose h3 {
  font-size: 1.1rem;
  margin: var(--space-3) 0 var(--space-1);
}

.prose ul, .prose ol {
  margin: 0 0 var(--space-2);
  padding-left: 1.3rem;
}

.prose li { margin-bottom: 0.4rem; }

.prose blockquote {
  margin: var(--space-3) 0;
  padding-left: var(--space-3);
  border-left: 3px solid var(--sage);
  color: var(--ink-soft);
  font-style: italic;
}

.prose code {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
  font-size: 0.88em;
  background: color-mix(in srgb, var(--forest) 8%, transparent);
  padding: 0.1em 0.35em;
  border-radius: 0.25rem;
}

.prose pre {
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  padding: var(--space-2);
  overflow-x: auto;
}

.prose pre code { background: none; padding: 0; font-size: 0.85rem; }

.prose hr {
  border: none;
  border-top: 1px solid var(--line);
  margin: var(--space-4) 0;
}

/* index listing */
.entry-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.entry {
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--line);
}
.entry:first-child { padding-top: var(--space-1); }
.entry:last-child { border-bottom: none; }

.entry-date {
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--sage);
  margin: 0 0 0.3rem;
}

.entry-date .draft-flag {
  margin: 0 0 0 0.4rem;
  padding: 0 0.45em;
  font-size: 0.68rem;
  vertical-align: 0.05em;
}

.entry h3 { margin-bottom: 0.4rem; }
.entry h3 a { text-decoration: none; border-bottom: 1px solid var(--sage-soft); }
.entry h3 a:hover, .entry h3 a:focus-visible { border-bottom-color: var(--clay); }

.entry p { margin: 0; color: var(--ink-soft); font-size: 0.95rem; }

.revisions .contact-list span.label { width: 10rem; }

/* the eyebrow doubles as a back link on article pages */
.page-head .eyebrow a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid var(--sage-soft);
}
.page-head .eyebrow a:hover { color: var(--clay); border-bottom-color: var(--clay); }

/* ---------- Click-to-enlarge ---------- */
img[data-zoomable] {
  cursor: zoom-in;
  transition: filter 0.2s var(--ease);
}
img[data-zoomable]:hover { filter: brightness(1.04); }
img[data-zoomable]:focus-visible {
  outline: 2px solid var(--sage);
  outline-offset: 4px;
}

.zoom-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(14, 20, 16, 0.86);
  backdrop-filter: blur(4px);
  cursor: zoom-out;
}

.zoom-img {
  position: fixed;
  border-radius: 0.5rem;
  box-shadow: 0 30px 90px -30px rgba(0, 0, 0, 0.75);
  transform-origin: top left;
  will-change: transform;
}

.zoom-close {
  position: fixed;
  top: var(--space-2);
  right: var(--space-2);
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  line-height: 1;
  color: var(--bg);
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 50%;
  cursor: pointer;
  transition: background 0.2s var(--ease);
}
.zoom-close:hover { background: rgba(255, 255, 255, 0.24); }
.zoom-close:focus-visible {
  outline: 2px solid var(--bg);
  outline-offset: 3px;
}

/* ---------- Small screens ---------- */
@media (max-width: 480px) {
  nav.site-nav ul { gap: 0.35rem var(--space-2); flex-wrap: wrap; }
  .site-header .wrap { flex-wrap: wrap; row-gap: 0.5rem; }
}

/* ---------- Course pages (courses/<course>/<term>/, built by _src/build-courses.py) ---------- */
.course .prose strong { font-weight: 600; color: var(--forest); }

.course .prose table {
  display: block;
  max-width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
  margin: 0 0 var(--space-3);
  font-size: 0.92rem;
  line-height: 1.5;
}

.course .prose th,
.course .prose td {
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  text-align: left;
}

.course .prose thead th {
  color: var(--forest);
  font-weight: 600;
  border-bottom: 2px solid var(--sage-soft);
  background: var(--bg-alt);
}

.course .prose code { overflow-wrap: anywhere; }

.course .toc {
  margin: 0 0 var(--space-4);
  padding: var(--space-2) var(--space-3);
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: 0.6rem;
}

.course .toc-title {
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--sage);
  margin: 0 0 var(--space-1);
}

.course .toc ul { margin: 0; padding-left: 1.1rem; columns: 2; column-gap: var(--space-3); }
.course .toc li { margin-bottom: 0.2rem; break-inside: avoid; }

@media (max-width: 640px) {
  .course .toc ul { columns: 1; }
}

.course .button {
  display: inline-block;
  margin: var(--space-2) 0;
  padding: 0.65rem 1.3rem;
  border-radius: 0.5rem;
  background: var(--forest);
  color: var(--bg);
  text-decoration: none;
  font-weight: 500;
  transition: background 0.2s var(--ease);
}

.course .button:hover,
.course .button:focus-visible { background: var(--clay); color: var(--bg); }

.course .status {
  margin: var(--space-3) 0 0;
  padding: var(--space-2) var(--space-3);
  background: var(--bg-alt);
  border-left: 3px solid var(--sage);
  border-radius: 0 0.5rem 0.5rem 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.course .status p { margin: 0; color: inherit; }