/* ── RESET ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ── VARIABLES ── */
:root {
  --ink: #111110;
  --ink-mid: #444440;
  --ink-light: #999990;
  --rule: #e0dfd8;
  --serif: 'Spectral', Georgia, serif;
}

/* ── BASE ── */
html { font-size: 20px; }

body {
  background: #fff;
  color: var(--ink);
  font-family: var(--serif);
  line-height: 1.8;
  padding: 0 1.5rem;
}

.wrap {
  max-width: 540px;
  margin: 0 auto;
  padding: 6rem 0 8rem;
}

/* ── HOME: IDENTITY ── */
.identity {
  display: flex;
  align-items: flex-start;
  gap: 1.6rem;
  margin-bottom: 1.6rem;
}

.photo {
  width: 108px;
  height: 108px;
  flex-shrink: 0;
  overflow: hidden;
}

.photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

h1 {
  font-family: var(--serif);
  font-size: 1.45rem;
  font-weight: 400;
  color: var(--ink);
  line-height: 1.2;
  margin-bottom: 0.35rem;
}

.under-name {
  font-size: 0.75rem;
  color: var(--ink-light);
}

.under-name a {
  color: var(--ink-light);
  text-decoration: none;
}

.under-name a:hover { color: var(--ink); }

/* ── HOME: BIO ── */
.bio p {
  font-size: 0.95rem;
  color: var(--ink-mid);
  text-align: justify;
  hyphens: auto;
}

.bio p + p { margin-top: 0.9em; }

.bio a {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--rule);
}

.bio a:hover { text-decoration-color: var(--ink); }

/* ── SUBPAGE: HEADER ── */
.site-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 3rem;
}

.site-header .name {
  font-family: var(--serif);
  font-size: 1rem;
  font-weight: 400;
  color: var(--ink);
  text-decoration: none;
}

.site-header .name:hover { color: var(--ink-mid); }

/* ── NAV ── */
nav {
  display: flex;
  gap: 1rem;
  align-items: baseline;
}

/* Home page nav gets bottom margin */
.identity + nav { margin-bottom: 1.8rem; }

nav a {
  font-family: var(--serif);
  font-size: 0.85rem;
  font-style: italic;
  color: var(--ink-light);
  text-decoration: none;
}

nav a:hover { color: var(--ink); }
nav a.current { color: var(--ink); }

/* ── RESEARCH: SECTIONS ── */
.section { margin-bottom: 3rem; }

.section-head {
  font-size: 0.8rem;
  font-weight: 400;
  font-style: italic;
  color: var(--ink-light);
  margin-bottom: 1.4rem;
  padding-bottom: 0.5rem;
  border-bottom: 0.5px solid var(--rule);
}

/* ── RESEARCH: PAPERS ── */
.paper { margin-bottom: 1.6rem; }

.paper-title {
  font-size: 0.95rem;
  color: var(--ink);
  line-height: 1.5;
}

.paper-authors {
  font-size: 0.85rem;
  color: var(--ink-mid);
  margin-top: 0.2rem;
}

.paper-venue {
  font-size: 0.85rem;
  font-style: italic;
  color: var(--ink-mid);
  margin-top: 0.1rem;
}

.paper-links {
  margin-top: 0.3rem;
  display: flex;
  gap: 0.8rem;
}

.paper-links a {
  font-size: 0.75rem;
  font-style: italic;
  color: var(--ink-light);
  text-decoration: none;
}

.paper-links a:hover { color: var(--ink); }

/* ── TEACHING: COURSES ── */
.course {
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 0.5px solid var(--rule);
}

.course:last-of-type { border-bottom: none; }

.course-title {
  font-size: 0.95rem;
  color: var(--ink);
  line-height: 1.5;
}

.course-meta {
  font-size: 0.85rem;
  font-style: italic;
  color: var(--ink-mid);
  margin-top: 0.15rem;
}

.course-links {
  margin-top: 0.3rem;
  display: flex;
  gap: 0.8rem;
}

.course-links a {
  font-size: 0.75rem;
  font-style: italic;
  color: var(--ink-light);
  text-decoration: none;
}

.course-links a:hover { color: var(--ink); }

.course-desc {
  font-size: 0.9rem;
  color: var(--ink-mid);
  margin-top: 0.6rem;
  line-height: 1.7;
}

.course-desc a {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--rule);
}

.course-desc a:hover { text-decoration-color: var(--ink); }

.letter-note {
  font-size: 0.9rem;
  color: var(--ink-mid);
  margin-top: 1rem;
  line-height: 1.7;
}

.letter-note a {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--rule);
}

.letter-note a:hover { text-decoration-color: var(--ink); }

/* ── LETTERS: CONTENT ── */
.content p {
  font-size: 0.95rem;
  color: var(--ink-mid);
  text-align: justify;
  hyphens: auto;
}

.content p + p { margin-top: 1em; }

.subsection {
  font-style: italic;
  color: var(--ink);
  margin-top: 2rem !important;
}

ol {
  margin: 1em 0 1em 1.4rem;
}

ol li {
  font-size: 0.95rem;
  color: var(--ink-mid);
  margin-bottom: 0.4em;
  padding-left: 0.3rem;
}

/* ── RESPONSIVE ── */
@media (max-width: 480px) {
  html { font-size: 18px; }
  .wrap { padding: 3.5rem 0 5rem; }
  .photo { width: 84px; height: 84px; }
  .bio p, .content p { text-align: left; hyphens: none; }
  .site-header { flex-direction: column; gap: 0.8rem; }
  nav { justify-content: flex-start; margin-bottom: 1.2rem; }
}