/* 1. Theme tokens ------------------------------------------------------- */

:root {
  color-scheme: light dark;

  --bg: light-dark(#fff3c4, #1a0b3b);
  --ink: light-dark(#2b1055, #ffe9a8);
  --muted: light-dark(#6b4a9c, #c9a6ff);
  --accent: light-dark(#ff2e88, #ff6bb5);
  --accent-2: light-dark(#00a896, #3ef0d0);
  --line: light-dark(#2b1055, #ffe9a8);
  --code-bg: light-dark(#ffe08a, #2d1766);
  --on-card: #2b1055; /* cards keep their own bright colour in both themes */

  --sans: "Alegreya Sans", system-ui, sans-serif;
  --display: "Baloo 2", "Alegreya Sans", system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --measure: 880px;
  --shadow: 5px 5px 0 var(--line);
}

[data-theme="light"] { color-scheme: light; }
[data-theme="dark"] { color-scheme: dark; }

/* 2. Base --------------------------------------------------------------- */

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

body {
  margin: 0;
  background: var(--bg);
  background-image: radial-gradient(color-mix(in srgb, var(--accent) 22%, transparent) 2px, transparent 2px);
  background-size: 28px 28px;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.1rem; /* tuned for the Alegreya Sans x-height */
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--accent-2);
  outline-offset: 3px;
}

/* Present for screen readers and the document outline, absent on screen. */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* 3. Layout ------------------------------------------------------------- */

.wrap {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 3rem 1.5rem 6rem;
}

/* 4. Header ------------------------------------------------------------- */

.site-header {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: start;
  margin-bottom: 3rem;
}

.site-header-content { grid-column: 1; }

.site-title {
  font-family: var(--display);
  font-size: 2.3rem;
  font-weight: 700;
  line-height: 1.1;
  text-decoration: none;
  display: inline-block;
  background: linear-gradient(90deg, var(--accent), #ff9f1c, var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  transform: rotate(-1.5deg);
  transition: transform 0.2s ease;
}

.site-title:hover { transform: rotate(1deg) scale(1.03); }

.site-tagline {
  margin: 0.35rem 0 1.1rem;
  color: var(--muted);
  font-size: 1rem;
}

.site-nav { display: flex; flex-wrap: wrap; gap: 0.6rem; }

.site-nav a {
  font-family: var(--display);
  font-size: 0.95rem;
  padding: 0.15rem 0.9rem;
  border: 2px solid var(--line);
  border-radius: 999px;
  text-decoration: none;
  transition: transform 0.15s ease, background 0.15s ease;
}

.site-nav a:hover {
  background: var(--accent-2);
  color: var(--on-card);
  transform: translateY(-2px) rotate(-2deg);
}

/* Theme toggle. Hidden unless theme.js ran, because without JS the button
   could not do anything. */
#theme-toggle { display: none; }

.has-js #theme-toggle {
  grid-column: 2;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.25rem;
  display: inline-flex;
  align-items: center;
  color: var(--muted);
  transition: color 0.15s ease;
}

#theme-toggle:hover { color: var(--accent); }

/* Show the icon for the theme you would switch *to*. The media query covers
   the moment before theme.js runs, and readers with JS disabled. */
.sun-icon,
.moon-icon { display: none; }

.moon-icon { display: block; }

@media (prefers-color-scheme: dark) {
  html:not([data-theme="light"]) .moon-icon { display: none; }
  html:not([data-theme="light"]) .sun-icon { display: block; }
}

[data-theme="dark"] .moon-icon { display: none; }
[data-theme="dark"] .sun-icon { display: block; }
[data-theme="light"] .moon-icon { display: block; }
[data-theme="light"] .sun-icon { display: none; }

/* 5. Home map and staff cards -------------------------------------------- */

.archive-title,
.page-title {
  font-family: var(--display);
  font-size: 1.9rem;
  margin: 0 0 1.5rem;
}

.dept-grid,
.staff-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.5rem;
}

.dept-card,
.staff-card {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  height: 100%;
  padding: 1.25rem;
  background: var(--card, var(--accent-2));
  color: var(--on-card);
  border: 3px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow);
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.dept-grid li:nth-child(odd) .dept-card { transform: rotate(-1deg); }
.dept-grid li:nth-child(even) .dept-card { transform: rotate(1deg); }

.dept-card:hover {
  transform: rotate(0) translateY(-4px) scale(1.02) !important;
  box-shadow: 8px 8px 0 var(--accent);
}

.dept-emoji { font-size: 2.4rem; line-height: 1; }
.dept-name { font-family: var(--display); font-size: 1.35rem; line-height: 1.2; }
.dept-summary { font-size: 1rem; }
.dept-count { margin-top: auto; padding-top: 0.5rem; font-family: var(--mono); font-size: 0.8rem; opacity: 0.75; }

.staff-card { align-items: center; text-align: center; }

.avatar {
  display: grid;
  place-items: center;
  width: 4rem;
  height: 4rem;
  border-radius: 50%;
  background: var(--bg);
  color: var(--ink);
  border: 3px solid var(--on-card);
  font-family: var(--display);
  font-size: 1.8rem;
}

.staff-name { font-family: var(--display); font-size: 1.25rem; }
.staff-role { font-size: 1rem; }
.staff-dept { font-family: var(--mono); font-size: 0.8rem; }

/* 6. Single item (post, page) and lists ---------------------------------- */

.post-list { list-style: none; margin: 2rem 0 0; padding: 0; }

.post-item {
  margin-bottom: 1.2rem;
  padding: 0.9rem 1.2rem;
  border: 2px solid var(--line);
  border-radius: 14px;
  background: color-mix(in srgb, var(--bg) 85%, var(--accent));
}

.post-item .post-title {
  font-family: var(--display);
  font-size: 1.3rem;
  text-decoration: none;
}

.post-item .post-title:hover { color: var(--accent); }
.post-summary { margin: 0.3rem 0 0; color: var(--muted); }

.post-date {
  display: block;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--muted);
  letter-spacing: 0.02em;
  margin-bottom: 0.3rem;
}

article.post .post-date { margin-bottom: 0; }

article.post .post-title {
  display: block;
  font-family: var(--display);
  font-size: 2.3rem;
  line-height: 1.2;
  margin: 0.3rem 0 0.6rem;
}

.post-info { color: var(--muted); font-size: 0.9rem; }

.back-link { margin-top: 3rem; font-size: 0.95rem; }

.back-link a { color: var(--muted); text-decoration: none; }
.back-link a:hover { color: var(--accent); }

/* 7. Content typography -------------------------------------------------- */

.post-content {
  max-width: 42rem;
  margin-top: 2rem;
  font-size: 1.1rem;
}

.post-content.intro { margin-top: 0; }
.post-content p { margin: 1.1em 0; }

.post-content h2,
.post-content h3,
.post-content h4 { font-family: var(--display); }

.post-content h2 { font-size: 1.5rem; margin: 2.2em 0 0.6em; }
.post-content h3 { font-size: 1.2rem; margin: 1.8em 0 0.5em; }
.post-content h4 { font-size: 1rem; margin: 1.6em 0 0.4em; }

.post-content ul,
.post-content ol { padding-left: 1.3rem; }

.post-content li { margin: 0.4rem 0; }

.post-content a {
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.post-content a:hover { color: var(--accent); }

.post-content img {
  max-width: 100%;
  height: auto;
  border: 3px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow);
  margin: 1.5rem 0;
}

.post-content code {
  font-family: var(--mono);
  background: var(--code-bg);
  padding: 0.1em 0.35em;
  border-radius: 4px;
  font-size: 0.88em;
}

.post-content pre {
  background: var(--code-bg);
  padding: 1rem;
  overflow-x: auto;
  border: 2px solid var(--line);
  border-radius: 10px;
}

.post-content pre code { background: none; padding: 0; }

.post-content blockquote {
  margin: 1.5em 0;
  padding-left: 1rem;
  border-left: 4px solid var(--accent);
  color: var(--muted);
}

.post-content table {
  width: 100%;
  margin: 1.8em 0;
  border-collapse: collapse;
  font-size: 1rem;
}

.post-content th,
.post-content td {
  padding: 0.6rem 0.8rem;
  border: 2px solid var(--line);
  text-align: left;
}

.post-content th { background: var(--code-bg); }

.post-content dt { font-family: var(--display); font-size: 1.2rem; margin-top: 1.8em; }
.post-content dd { margin: 0.2em 0 0.8em; color: var(--muted); font-style: italic; }

/* Emitted by the Markdown `footnotes` extension. */
.footnote { font-size: 0.95rem; margin-top: 3rem; opacity: 0.85; }
.footnote hr { margin-bottom: 1rem; }
.footnote ol { padding-left: 1.5rem; }

/* 8. Footer -------------------------------------------------------------- */

.site-footer {
  margin-top: 5rem;
  padding-top: 1.5rem;
  border-top: 3px dashed var(--accent);
  color: var(--muted);
  font-size: 0.9rem;
}

/* 9. Preferences --------------------------------------------------------- */

@media (max-width: 480px) {
  .wrap { padding: 2rem 1.25rem 4rem; }
  .site-title { font-size: 1.9rem; }
  article.post .post-title { font-size: 1.75rem; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

/* 10. Post "paper": same look as code blocks ------------------------------ */

article.post,
.post-item {
  background: var(--code-bg);
  border: 2px solid var(--line);
  border-radius: 14px;
}

article.post { padding: 1.5rem 1.75rem; box-shadow: var(--shadow); }

/* Code inside the paper flips to the page colour so it stays visible. */
article.post .post-content pre,
article.post .post-content code { background: var(--bg); }

@media (max-width: 480px) {
  article.post { padding: 1.1rem 1rem; }
}