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

:root {
  --ink:       #1a1814;
  --ink-soft:  #4a4642;
  --ink-muted: #8a8480;
  --paper:     #faf8f5;
  --paper-alt: #f3f0eb;
  --accent:    #7c5c3a;
  --accent-lt: #c4a882;
  --rule:      #ddd8d0;
  --serif:     'Cormorant Garamond', Georgia, serif;
  --mono:      'DM Mono', 'Courier New', monospace;
  --nav-h:     64px;
  --max-w:     1080px;
  --section-v: 96px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--serif);
  background: var(--paper);
  color: var(--ink);
  font-size: 18px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

/* ─── NAV ─────────────────────────────────────────────── */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: rgba(250,248,245,0.93);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--rule);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 40px;
  z-index: 1000;
  transition: box-shadow 0.3s;
}
#navbar.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.06); }

.nav-name {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 36px;
}
.nav-links a {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink-soft);
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--accent); }

.hamburger {
  display: none;
  background: none;
  border: none;
  font-size: 22px;
  cursor: pointer;
  color: var(--ink);
}

/* ─── MOBILE MENU ──────────────────────────────────────── */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--paper);
  z-index: 2000;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 28px;
}
.mobile-menu.open { display: flex; }
.mobile-menu ul { list-style: none; text-align: center; }
.mobile-menu li { margin: 18px 0; }
.mobile-menu a {
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink);
}
.close-btn {
  position: absolute;
  top: 20px; right: 28px;
  background: none;
  border: none;
  font-size: 22px;
  cursor: pointer;
  color: var(--ink-soft);
}

/* ─── BUTTONS ──────────────────────────────────────────── */
.btn {
  display: inline-block;
  padding: 11px 28px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  background: var(--accent);
  color: var(--paper);
  border: 1.5px solid var(--accent);
  transition: background 0.2s, color 0.2s;
}
.btn:hover { background: var(--ink); border-color: var(--ink); }

.btn-ghost {
  background: transparent;
  color: var(--accent);
}
.btn-ghost:hover { background: var(--accent); color: var(--paper); }

/* ─── HERO ──────────────────────────────────────────────── */
#hero {
  padding-top: calc(var(--nav-h) + 80px);
  padding-bottom: 80px;
  padding-left: 40px;
  padding-right: 40px;
  max-width: var(--max-w);
  margin: 0 auto;
}

.hero-inner {
  display: flex;
  align-items: flex-start;
  gap: 64px;
  animation: fadeUp 0.8s ease both;
}

.hero-photo-col { flex: 0 0 220px; }

.photo-frame {
  width: 200px;
  height: 240px;
  border: 1px solid var(--rule);
  overflow: hidden;
  position: relative;
  background: var(--paper-alt);
}
.photo-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.photo-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-muted);
  text-align: center;
  line-height: 1.6;
}
.photo-frame:has(img[style*="display:none"]) .photo-placeholder,
.photo-frame.no-photo .photo-placeholder { display: flex; }

.hero-text-col { flex: 1; padding-top: 12px; }

.hero-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-lt);
  margin-bottom: 16px;
}

.hero-name {
  font-size: clamp(52px, 7vw, 82px);
  font-weight: 300;
  line-height: 1.05;
  letter-spacing: -0.01em;
  margin-bottom: 20px;
}
.hero-name em {
  font-style: italic;
  color: var(--accent);
}

.hero-title {
  font-size: 17px;
  color: var(--ink-soft);
  line-height: 1.6;
  margin-bottom: 36px;
}

.hero-links { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-rule {
  margin-top: 80px;
  border: none;
  border-top: 1px solid var(--rule);
}

/* ─── SECTIONS ──────────────────────────────────────────── */
.section {
  padding: var(--section-v) 40px;
}
.section-alt { background: var(--paper-alt); }

.section-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.section-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-lt);
  margin-bottom: 20px;
}

h2 {
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 300;
  letter-spacing: -0.01em;
  margin-bottom: 24px;
}

h3 {
  font-size: 20px;
  font-weight: 400;
  margin-bottom: 12px;
  margin-top: 28px;
}

p { margin-bottom: 16px; }
p:last-child { margin-bottom: 0; }

.section-intro {
  font-size: 19px;
  color: var(--ink-soft);
  max-width: 640px;
  margin-bottom: 48px;
}

/* ─── ABOUT TWO-COL ────────────────────────────────────── */
.two-col {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 64px;
  align-items: start;
}

.interest-list {
  list-style: none;
  margin-bottom: 28px;
}
.interest-list li {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink-soft);
  padding: 8px 0;
  border-bottom: 1px solid var(--rule);
  letter-spacing: 0.02em;
}
.interest-list li:first-child { border-top: 1px solid var(--rule); }

/* ─── RESEARCH CARDS ────────────────────────────────────── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2px;
  margin-top: 48px;
}

.research-card {
  background: var(--paper);
  border: 1px solid var(--rule);
  padding: 36px 32px;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.research-card:hover {
  border-color: var(--accent-lt);
  box-shadow: 0 4px 24px rgba(124,92,58,0.07);
}

.card-number {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--accent-lt);
  margin-bottom: 16px;
}

.research-card h3 {
  font-size: 20px;
  font-weight: 400;
  margin-top: 0;
  margin-bottom: 14px;
}
.research-card p {
  font-size: 16px;
  color: var(--ink-soft);
  line-height: 1.65;
}

/* ─── PUBLICATIONS ──────────────────────────────────────── */
.pub-year-group {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 32px;
  margin-bottom: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--rule);
}
.pub-year-group:first-of-type { margin-top: 40px; }

.pub-year {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--ink-muted);
  padding-top: 4px;
}

.pub-list { display: flex; flex-direction: column; gap: 32px; }

.pub-item {}

.pub-title {
  font-size: 18px;
  font-weight: 500;
  margin-bottom: 6px;
  line-height: 1.45;
}

.pub-authors {
  font-size: 15px;
  color: var(--ink-soft);
  margin-bottom: 4px;
}

.pub-venue {
  font-size: 15px;
  color: var(--ink-muted);
  margin-bottom: 10px;
}

.pub-links {
  display: flex;
  gap: 20px;
}
.pub-links a {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}
.pub-links a:hover { border-color: var(--accent); }

/* ─── CV ────────────────────────────────────────────────── */
.cv-download-row {
  margin: 32px 0 48px;
}

.cv-blocks {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 48px;
}

.cv-block h3 {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-top: 0;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 12px;
}

.cv-entry {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 16px;
  margin-bottom: 24px;
  font-size: 16px;
  line-height: 1.6;
}

.cv-year {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-muted);
  padding-top: 3px;
  letter-spacing: 0.04em;
}

/* ─── TEACHING TABLE ────────────────────────────────────── */
.teaching-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 40px;
  font-size: 16px;
}
.teaching-table th {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-muted);
  text-align: left;
  padding: 12px 16px 12px 0;
  border-bottom: 1px solid var(--rule);
  font-weight: 400;
}
.teaching-table td {
  padding: 18px 16px 18px 0;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
  line-height: 1.5;
  color: var(--ink-soft);
}
.teaching-table td:first-child { color: var(--ink); }
.teaching-table tr:hover td { background: rgba(124,92,58,0.03); }

/* ─── CONTACT ───────────────────────────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 48px;
  margin-top: 48px;
}

.contact-item {}

.contact-label {
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 14px;
}

.contact-item a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
  font-size: 17px;
}
.contact-item a:hover { border-color: var(--accent); }

.contact-item span {
  font-size: 16px;
  color: var(--ink-soft);
  line-height: 1.7;
}

.social-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.social-links a {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.06em;
}

/* ─── FOOTER ────────────────────────────────────────────── */
footer {
  border-top: 1px solid var(--rule);
  padding: 32px 40px;
  text-align: center;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink-muted);
}

/* ─── ANIMATION ─────────────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.section {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.section.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ─── RESPONSIVE ────────────────────────────────────────── */
@media (max-width: 840px) {
  :root { --section-v: 64px; }

  #navbar { padding: 0 24px; }
  .nav-links { display: none; }
  .hamburger { display: block; }

  #hero { padding-left: 24px; padding-right: 24px; padding-top: calc(var(--nav-h) + 48px); }
  .hero-inner { flex-direction: column; gap: 36px; }
  .hero-photo-col { flex: none; }
  .photo-frame { width: 160px; height: 192px; }

  .section { padding-left: 24px; padding-right: 24px; }

  .two-col { grid-template-columns: 1fr; gap: 36px; }

  .pub-year-group { grid-template-columns: 60px 1fr; gap: 16px; }

  .cv-entry { grid-template-columns: 76px 1fr; }

  .teaching-table th:nth-child(3),
  .teaching-table td:nth-child(3) { display: none; }
}

@media (max-width: 520px) {
  .hero-name { font-size: 48px; }
  .pub-year-group { grid-template-columns: 1fr; }
  .pub-year { margin-bottom: -16px; }
}