/* ── Variables ───────────────────────────────────────── */
:root {
  --bg:       #ffffff;
  --text:     #1a1a1a;
  --accent:   #2d5a27;       /* dark green */
  --muted:    #555555;
  --border:   #e0e0e0;
  --max-w:    940px;
}

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

html { font-size: 18px; }

body {
  font-family: 'EB Garamond', Georgia, serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  padding: 0 1.5rem;
}

/* ── Layout ──────────────────────────────────────────── */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 3rem 0 4rem;
}

/* ── Header & Nav ────────────────────────────────────── */
header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem 2rem;
  border-bottom: 1px solid var(--accent);
  padding-bottom: 1rem;
  margin-bottom: 3rem;
}

.site-title {
  font-size: 1.4rem;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.site-title a {
  color: var(--accent);
  text-decoration: none;
}

.site-title a:hover { text-decoration: underline; }

nav { display: flex; gap: 1.6rem; flex-wrap: wrap; }

nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  transition: color 0.15s;
}

nav a:hover,
nav a.active {
  color: var(--accent);
}

/* ── Main Content ────────────────────────────────────── */
main { min-height: 60vh; }

/* ── Home page ───────────────────────────────────────── */
.home-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 3rem;
  align-items: start;
}

.home-grid img {
  width: 100%;
  border-radius: 2px;
  filter: grayscale(10%);
}

.bio p { margin-bottom: 1.1rem; }

.bio p:last-child { margin-bottom: 0; }

.links {
  margin-top: 1.8rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.4rem;
}

.links a {
  color: var(--accent);
  text-decoration: none;
  font-size: 0.92rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 1px;
  transition: border-color 0.15s;
}

.links a:hover { border-color: var(--accent); }

/* ── Page headings ───────────────────────────────────── */
h2.page-title {
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.04em;
  text-transform: lowercase;
  margin-bottom: 2rem;
}

/* ── Research page ───────────────────────────────────── */
.research-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: start;
}

.section-header {
  font-size: 1rem;
  font-weight: 500;
  font-style: normal;
  color: var(--text);
  margin-bottom: 1.4rem;
  letter-spacing: 0;
}

.paper {
  margin-bottom: 1.6rem;
  font-size: 0.93rem;
  line-height: 1.5;
}

.paper-title {
  font-weight: 500;
  color: var(--text);
}

.journal {
  font-style: italic;
}

.paper-authors {
  color: var(--muted);
}

.paper-type {
  font-size: 0.78rem;
  color: var(--muted);
  font-style: italic;
}

.paper-links {
  margin-top: 0.25rem;
}

.paper-links a {
  color: var(--accent);
  text-decoration: none;
  margin-right: 0.8rem;
}

.paper-links a:hover { text-decoration: underline; }

.paper-note {
  font-size: 0.78rem;
  color: var(--accent);
  margin-top: 0.1rem;
  display: block;
}

.paper-abstract {
  font-size: 0.78rem;
  color: var(--muted);
  margin-top: 0.6rem;
  line-height: 1.5;
}

@media (max-width: 680px) {
  .research-columns {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* ── Book page ───────────────────────────────────────── */
.book-title {
  font-size: 1.15rem;
  font-weight: 500;
  line-height: 1.4;
  margin-bottom: 1.5rem;
  color: var(--text);
}

.book-body p { margin-bottom: 1.1rem; }
.book-body p:last-child { margin-bottom: 0; }

/* ── CV page ─────────────────────────────────────────── */
.cv-block { margin-bottom: 2.5rem; }

.cv-block h3 {
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.3rem;
  margin-bottom: 1rem;
}

.cv-download {
  display: inline-block;
  margin-bottom: 2rem;
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
  padding-bottom: 1px;
}

.cv-download:hover { border-color: var(--accent); }

.cv-entry {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 0 1.5rem;
  margin-bottom: 0.6rem;
  font-size: 0.95rem;
}

.cv-year { color: var(--muted); }

/* ── Footer ──────────────────────────────────────────── */
footer {
  margin-top: 4rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  font-size: 0.82rem;
  color: var(--muted);
}

/* ── Responsive ──────────────────────────────────────── */
@media (max-width: 600px) {
  html { font-size: 17px; }

  .home-grid {
    grid-template-columns: 1fr;
  }

  .home-grid .photo { order: -1; max-width: 160px; }

  header {
    flex-direction: column;
    gap: 0.8rem;
  }
}