/* ============================================================
   Philip Coyle — academic homepage
   Plain CSS, no frameworks, no build step.
   ============================================================ */

:root {
  --maxwidth: 1200px;
  --text: #1a1a1a;
  --muted: #555;
  --brand: #007cb4;       /* Gerzensee crest blue — name & accents */
  --brand-dark: #007cb4;  /* deeper blue for section headings */
  --accent: #0077b0;      /* readable blue for body links */
  --accent-light: #009FE3;
  --rule: #e2e2e2;
  --bg: #ffffff;
}

* {
  box-sizing: border-box;
}

html {
  font-size: 22px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Georgia, "Times New Roman", Times, serif;
  font-size: 1rem;
  line-height: 1.6;
}

.container {
  max-width: var(--maxwidth);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header / navigation ---------- */

header {
  background: #ffffff;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 2.5rem;
}

nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  padding: 1rem 0;
}

nav .site-name {
  font-weight: bold;
  font-size: 1.25rem;
  letter-spacing: 0.02em;
}

nav .site-name a {
  color: var(--brand);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 1.5rem;
}

nav .site-name .crest {
  height: 3.2rem;
  width: auto;
  display: block;
}

nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 0.95rem;
}

nav ul a {
  color: var(--muted);
  text-decoration: none;
  padding-bottom: 3px;
  border-bottom: 2px solid transparent;
}

nav ul a:hover,
nav ul a.active {
  color: var(--brand);
  border-bottom-color: var(--brand);
}

/* ---------- Headings & text ---------- */

h1 {
  font-size: 2rem;
  margin: 0 0 0.25rem;
  line-height: 1.2;
  color: var(--brand);
}

h2 {
  font-size: 1.35rem;
  margin: 2.5rem 0 1rem;
  padding-bottom: 0.35rem;
  color: #333333;
  border-bottom: 2px solid #d0d0d0;
}

h3 {
  font-size: 1.1rem;
  margin: 0 0 0.25rem;
}

p {
  margin: 0 0 1rem;
}

a {
  color: var(--accent);
}

a:hover {
  color: var(--accent-light);
}

.lead {
  font-size: 1.05rem;
}

.subtitle {
  color: var(--muted);
  font-size: 1.1rem;
  margin: 0 0 1.5rem;
}

h1.name-only {
  margin-bottom: 1.5rem;
}

/* ---------- Home intro ---------- */

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

.intro .photo {
  flex: 0 0 260px;
  max-width: 260px;
}

.intro .photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 34% center;
  border-radius: 4px;
  border: 1px solid var(--rule);
}

.intro .bio {
  flex: 1 1 320px;
}

dl.facts {
  margin: 1.5rem 0 0;
}

dl.facts div {
  display: flex;
  gap: 0.75rem;
  padding: 0.3rem 0;
  border-top: 1px solid var(--rule);
}

dl.facts dt {
  flex: 0 0 110px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--brand-dark);
  font-weight: bold;
  padding-top: 0.15rem;
}

dl.facts dt.keep-case {
  text-transform: none;
}

dl.facts dd {
  margin: 0;
  flex: 1 1 auto;
}

/* ---------- Research ---------- */

.paper {
  margin: 0 0 2.25rem;
}

.paper h3 a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.paper h3 a:hover {
  color: var(--accent-light);
  border-bottom-color: var(--accent-light);
}

.paper .coauthors {
  color: var(--muted);
  margin: 0 0 0.5rem;
}

.paper .coauthors a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.paper .coauthors a:hover {
  border-bottom-color: var(--accent);
}

.abstract-toggle {
  margin: 0.5rem 0 0.6rem;
}

.abstract-toggle > summary {
  cursor: pointer;
  list-style: none;
  padding: 0.4rem 0.75rem;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent);
  user-select: none;
}

/* hide the default disclosure triangle, draw our own */
.abstract-toggle > summary::-webkit-details-marker {
  display: none;
}

.abstract-toggle > summary::before {
  content: "\25B8";   /* right-pointing triangle */
  display: inline-block;
  margin-right: 0.5rem;
  transition: transform 0.15s ease;
}

.abstract-toggle[open] > summary::before {
  transform: rotate(90deg);
}

.paper .abstract {
  font-size: 0.95rem;
  margin: 0;
  padding: 0.75rem 0.95rem;
}

.paper .presented {
  font-size: 0.85rem;
  color: var(--muted);
  margin: 0 0 0.6rem;
}

.paper .presented strong {
  color: var(--text);
  font-weight: bold;
}

.paper .links {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 0.9rem;
}

.paper .links a {
  margin-right: 1rem;
}

.status {
  display: inline-block;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: 0.1rem 0.45rem;
  vertical-align: middle;
}

/* ---------- Teaching ---------- */

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

.teaching-list li {
  padding: 0.85rem 0;
  border-top: 1px solid var(--rule);
}

.teaching-list .role {
  font-weight: bold;
}

.teaching-list .meta {
  color: var(--muted);
  font-size: 0.95rem;
}

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

footer {
  margin-top: 3.5rem;
  padding: 1.5rem 0 2.5rem;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.85rem;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

/* ---------- Mobile ---------- */

@media (max-width: 560px) {
  html {
    font-size: 18px;
  }

  nav {
    flex-direction: column;
    align-items: flex-start;
  }

  h1 {
    font-size: 1.7rem;
  }

  dl.facts div {
    flex-direction: column;
    gap: 0.1rem;
  }

  dl.facts dt {
    flex-basis: auto;
  }
}