/*
 * The whole look of the site. Change --accent to make it yours: it is used for
 * links, buttons and the favicon-style highlights, and dark mode derives its
 * own lighter shade from it. Pick a colour dark enough for white text on it.
 */
:root {
  --accent: #4f46e5;

  --bg: #faf9f7;
  --surface: #ffffff;
  --ink: #18181b;
  --muted: #55555f;
  --line: #e7e4df;
  --link: var(--accent);
  --btn-bg: var(--accent);
  --on-accent: #ffffff;

  --serif: 'Iowan Old Style', 'Palatino Linotype', Palatino, 'URW Palladio L', P052, Georgia, serif;
  --sans: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --radius: 14px;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #131316;
    --surface: #1c1c21;
    --ink: #ececf1;
    --muted: #a3a3ad;
    --line: #2c2c33;
    --link: color-mix(in oklab, var(--accent) 55%, white);
    --btn-bg: var(--link);
    --on-accent: #131316;
  }
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 1.0625rem/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--link);
  text-underline-offset: 0.2em;
}

:focus-visible {
  outline: 3px solid var(--link);
  outline-offset: 3px;
  border-radius: 4px;
}

h1,
h2,
h3 {
  font-family: var(--serif);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0;
}

h1 {
  font-size: clamp(2.25rem, 1.5rem + 3.5vw, 3.75rem);
}

h2 {
  font-size: clamp(1.5rem, 1.25rem + 1vw, 2rem);
}

h3 {
  font-size: 1.25rem;
}

.wrap {
  width: 100%;
  max-width: 68rem;
  margin-inline: auto;
  padding-inline: 1.25rem;
}

.skip {
  position: absolute;
  left: 1rem;
  top: -4rem;
  padding: 0.5rem 1rem;
  background: var(--btn-bg);
  color: var(--on-accent);
  border-radius: 8px;
  z-index: 10;
}

.skip:focus {
  top: 1rem;
}

/* Header and footer */

.site-header {
  border-bottom: 1px solid var(--line);
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4.5rem;
}

.brand {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--ink);
  text-decoration: none;
}

.site-header nav {
  display: flex;
  gap: 0.25rem;
}

.site-header nav a {
  color: var(--muted);
  text-decoration: none;
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
}

.site-header nav a:hover,
.site-header nav a[aria-current='page'] {
  color: var(--ink);
  background: var(--surface);
  box-shadow: inset 0 0 0 1px var(--line);
}

main {
  padding-block: 3.5rem 5rem;
}

.site-footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9375rem;
}

.footer-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 2rem;
  padding-block: 2rem;
}

.footer-row p {
  margin: 0;
}

.links {
  display: flex;
  gap: 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-row .credit {
  margin-left: auto;
}

.site-footer a {
  color: var(--muted);
}

.site-footer a:hover {
  color: var(--ink);
}

/* Shared text pieces */

.eyebrow {
  margin: 0 0 0.75rem;
  color: var(--muted);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.lede {
  margin: 1.25rem 0 0;
  max-width: 40rem;
  color: var(--muted);
  font-size: 1.1875rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 2rem 0 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.25rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink);
  font: inherit;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}

.btn:hover {
  border-color: var(--muted);
}

.btn-primary {
  background: var(--btn-bg);
  border-color: var(--btn-bg);
  color: var(--on-accent);
}

.btn-primary:hover {
  border-color: var(--btn-bg);
  filter: brightness(1.08);
}

.page-head {
  margin-bottom: 3rem;
}

/* Home */

.hero {
  padding-block: 1.5rem 4.5rem;
}

.hero h1 {
  max-width: 20ch;
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.template-note {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem 2rem;
  margin-top: 4.5rem;
  padding: 1.5rem 1.75rem;
  border: 1px dashed var(--muted);
  border-radius: var(--radius);
}

.template-note p {
  margin: 0;
  max-width: 38rem;
  color: var(--muted);
}

.template-note strong {
  color: var(--ink);
}

/* Project cards */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 19rem), 1fr));
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.card a {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: inherit;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.card a:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px -18px rgb(0 0 0 / 0.35);
}

.card img {
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-bottom: 1px solid var(--line);
}

.card-body {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 1.25rem 1.25rem 1.4rem;
}

.card-title {
  font-family: var(--serif);
  font-size: 1.3125rem;
  font-weight: 700;
}

.card-summary {
  color: var(--muted);
  font-size: 0.975rem;
}

.card-meta {
  margin-top: auto;
  padding-top: 0.5rem;
  color: var(--muted);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* Project page */

.back {
  display: inline-block;
  margin-bottom: 2rem;
  color: var(--muted);
  text-decoration: none;
}

.back:hover {
  color: var(--ink);
}

.facts {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 3rem;
  margin: 2rem 0 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

.facts dt {
  color: var(--muted);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.facts dd {
  margin: 0.2rem 0 0;
}

.cover {
  margin-block: 3rem;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.prose {
  max-width: 42rem;
}

.prose h2 {
  margin: 2.5rem 0 0.75rem;
  font-size: 1.625rem;
}

.prose p,
.prose ul,
.prose ol {
  margin: 0 0 1.1rem;
}

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

.prose blockquote {
  margin: 2rem 0;
  padding-left: 1.25rem;
  border-left: 3px solid var(--link);
  font-family: var(--serif);
  font-size: 1.25rem;
  font-style: italic;
}

.prose blockquote p {
  margin: 0;
}

.next {
  display: flex;
  flex-direction: column;
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
}

.next a {
  font-family: var(--serif);
  font-size: 1.75rem;
  font-weight: 700;
  text-decoration: none;
}

.next a:hover {
  text-decoration: underline;
}

/* About */

.about {
  display: grid;
  gap: 3.5rem;
}

@media (min-width: 60rem) {
  .about {
    grid-template-columns: 1.15fr 1fr;
    gap: 5rem;
  }
}

.about .lede {
  margin-top: 0;
  margin-bottom: 1.25rem;
}

.timeline {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
}

.timeline li {
  padding: 1.25rem 0;
  border-top: 1px solid var(--line);
}

.timeline p {
  margin: 0.25rem 0 0;
}

.timeline .when,
.timeline .org {
  color: var(--muted);
  font-size: 0.9375rem;
}

.timeline .when {
  margin: 0 0 0.25rem;
  font-variant-numeric: tabular-nums;
}

/* Contact */

.contact-form {
  display: grid;
  gap: 0.4rem;
  max-width: 36rem;
}

.contact-form label {
  margin-top: 0.9rem;
  font-weight: 600;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  color: var(--ink);
  font: inherit;
}

.contact-form input:focus-visible,
.contact-form textarea:focus-visible {
  outline-offset: 0;
  border-color: var(--link);
}

.contact-form textarea {
  resize: vertical;
}

.contact-form altcha-widget {
  margin-top: 0.75rem;
}

.contact-form button {
  justify-self: start;
  margin-top: 1.25rem;
}

.aside {
  margin-top: 2.5rem;
  color: var(--muted);
}

@media (max-width: 40rem) {
  main {
    padding-block: 2.25rem 3.5rem;
  }

  .footer-row .credit {
    margin-left: 0;
  }

  .next a {
    font-size: 1.375rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .card a {
    transition: none;
  }
}