/* ============================================================
   Site styles. Colors and fonts are set once here, at the top.
   ============================================================ */
:root {
  --accent: #C41230;      /* emphasis color */
  --ink: #000000;         /* names, headings */
  --text: #262626;        /* body text */
  --muted: #5E5E5E;       /* secondary text (dark grey) */
  --rule: #E2E2E2;        /* thin dividing lines */
  --paper: #FFFFFF;       /* background */
  --display: "Yeseva One", Georgia, "Times New Roman", serif;
  --body: "Lato", "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font-family: var(--body);
  font-size: 1.125rem;
  line-height: 1.65;
}

.page {
  max-width: 44rem;
  margin: 0 auto;
  padding: 4.5rem 1.5rem 3rem;
}

/* ---------- Header ---------- */
.site-header { margin-bottom: 3rem; }

.name {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(2.4rem, 7vw, 3.4rem);
  line-height: 1.05;
  color: var(--ink);
  margin: 0 0 0.75rem;
}
.name a { color: inherit; text-decoration: none; }

.role, .email { margin: 0; font-size: 1rem; color: var(--muted); }
.email a { color: var(--muted); }
.email a:hover { color: var(--accent); }

.site-nav {
  margin-top: 1.75rem;
  display: flex;
  gap: 2rem;
  border-bottom: 1px solid var(--rule);
}
.site-nav a {
  color: var(--ink);
  text-decoration: none;
  font-size: 1rem;
  padding: 0.5rem 0;
  margin-bottom: -1px;
  border-bottom: 2px solid transparent;
}
.site-nav a:hover { color: var(--accent); }
.site-nav a[aria-current="page"] {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ---------- Text ---------- */
h2 {
  font-family: var(--display);
  font-weight: 400;
  font-size: 1.75rem;
  line-height: 1.2;
  color: var(--ink);
  margin: 2.75rem 0 1rem;
}
main > h2:first-child { margin-top: 0; }

h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ink);
  margin: 2rem 0 0.5rem;
}

p { margin: 0 0 1.1rem; }

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}
a:hover { text-decoration-thickness: 2px; }

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

/* Publication lists: hanging indent, no bullets */
.pubs { list-style: none; padding: 0; margin: 0; }
.pubs li { padding-left: 1.5rem; text-indent: -1.5rem; margin-bottom: 1rem; }
.pubs em { color: var(--ink); }

/* ---------- Teaching: course squares ---------- */
.courses {
  list-style: none;
  padding: 0;
  margin: 2rem 0 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
@media (max-width: 560px) {
  .courses { grid-template-columns: repeat(2, 1fr); gap: 0.75rem; }
}

.course {
  aspect-ratio: 1 / 1;
  display: flex;
  flex-direction: column;
  padding: 1rem 1.1rem;
  border: 1.5px solid var(--ink);
  color: var(--ink);
  text-decoration: none;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}
.course-code { font-size: 0.85rem; font-weight: 700; color: var(--accent); }
.course-title {
  font-family: var(--display);
  font-size: clamp(1.05rem, 3.4vw, 1.3rem);
  line-height: 1.2;
  margin-top: 0.5rem;
}
.course-term { margin-top: auto; font-size: 0.85rem; color: var(--muted); }

.course:hover, .course:focus-visible {
  background: var(--accent);
  border-color: var(--accent);
  color: #FFFFFF;
}
.course:hover .course-code, .course:hover .course-term,
.course:focus-visible .course-code, .course:focus-visible .course-term { color: #FFFFFF; }

/* ---------- Single course page ---------- */
.back { display: inline-block; font-size: 0.95rem; margin-bottom: 1.25rem; }
.course-page-code { margin: 0 0 0.25rem; font-weight: 700; color: var(--accent); font-size: 0.95rem; }
.course-page h2 { margin-top: 0; }

.details {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.35rem 1.5rem;
  margin: 1.5rem 0 2rem;
  padding: 1rem 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  font-size: 1rem;
}
.details dt { color: var(--muted); }
.details dd { margin: 0; }

/* ---------- Footer ---------- */
.site-footer {
  margin-top: 4.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--rule);
  font-size: 0.9rem;
  color: var(--muted);
}
.site-footer p { margin: 0; }

@media (max-width: 560px) {
  .page { padding-top: 3rem; }
  .site-nav { gap: 1.5rem; }
}
@media (prefers-reduced-motion: reduce) {
  .course { transition: none; }
}

/* ---------- Dated lists (publications, talks) ---------- */
.dated { list-style: none; padding: 0; margin: 0; }
.dated li {
  display: grid;
  grid-template-columns: 7rem 1fr;
  gap: 0 1.25rem;
  margin-bottom: 1rem;
}
.dated .when { color: var(--muted); font-size: 1rem; padding-top: 0.1rem; }
.note { color: var(--muted); }
@media (max-width: 560px) {
  .dated li { grid-template-columns: 1fr; }
  .dated .when { font-size: 0.9rem; }
}

.project-title { font-size: 1.15rem; margin-top: 0; }

/* ---------- Teaching additions ---------- */
.years { font-family: var(--body); font-size: 1rem; color: var(--muted); margin-left: 0.5rem; }
.courses + h2 { margin-top: 3.5rem; }
.course-code { min-height: 1.3em; }
.course-sub { font-size: 0.85rem; line-height: 1.35; margin-top: 0.4rem; color: var(--muted); }
.course:hover .course-sub, .course:focus-visible .course-sub { color: #FFFFFF; }
.course-page-sub { margin: -0.5rem 0 0; color: var(--muted); font-size: 1.05rem; }
.details ul { list-style: none; margin: 0; padding: 0; }

@media (max-width: 560px) {
  .course { padding: 0.85rem; }
  .course-sub { font-size: 0.8rem; }
  .years { display: block; margin: 0.35rem 0 0; }
}

/* ---------- About: bio with portrait on the right ---------- */
.intro {
  display: grid;
  grid-template-columns: 1fr 8.5rem;
  gap: 2.5rem;
  align-items: start;
}
.intro p { margin: 0; }
.portrait {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  object-fit: cover;
  object-position: center 20%;
}
@media (max-width: 560px) {
  .intro { grid-template-columns: 1fr; gap: 1.5rem; }
  .portrait { order: -1; width: 7rem; }
}