@import url('https://fonts.googleapis.com/css2?family=EB+Garamond:ital,wght@0,400;0,500;1,400&family=DM+Mono:wght@300;400&display=swap');

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

:root {
  --ink: #1a1a18;
  --ink-light: #4a4a46;
  --ink-muted: #8a8a84;
  --paper: #f7f5f0;
  --paper-warm: #efede6;
  --rule: #d4d0c8;
  --accent: #2b4a8c;
  --accent-light: #e8eef8;
  --serif: 'EB Garamond', Georgia, serif;
  --mono: 'DM Mono', 'Courier New', monospace;
  --nav-w: 220px;
  --content-max: 720px;
}

html { font-size: 17px; scroll-behavior: smooth; }

body {
  font-family: var(--serif);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.75;
  min-height: 100vh;
  display: flex;
}

/* ── SIDEBAR NAV ── */
nav {
  width: var(--nav-w);
  min-height: 100vh;
  position: fixed;
  top: 0; left: 0;
  background: var(--ink);
  display: flex;
  flex-direction: column;
  padding: 2.5rem 1.75rem;
  z-index: 100;
}

.nav-name {
  font-family: var(--serif);
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--paper);
  letter-spacing: 0.01em;
  line-height: 1.3;
  margin-bottom: 0.25rem;
  text-decoration: none;
}

.nav-role {
  font-family: var(--mono);
  font-size: 0.62rem;
  font-weight: 300;
  color: var(--ink-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 2.5rem;
}

nav ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

nav a {
  font-family: var(--serif);
  font-size: 0.95rem;
  color: #b0aea8;
  text-decoration: none;
  display: block;
  padding: 0.3rem 0;
  border-left: 2px solid transparent;
  padding-left: 0.75rem;
  margin-left: -0.75rem;
  transition: color 0.15s, border-color 0.15s;
}

nav a:hover, nav a.active {
  color: var(--paper);
  border-left-color: var(--paper);
}

nav a.sub {
  font-size: 0.85rem;
  padding-left: 1.5rem;
  margin-left: -0.75rem;
  color: #807e78;
}

nav a.sub:hover, nav a.sub.active {
  color: #c0bdb8;
  border-left-color: #c0bdb8;
}

.nav-bottom {
  margin-top: auto;
  font-family: var(--mono);
  font-size: 0.6rem;
  color: #555550;
  letter-spacing: 0.08em;
}

/* ── MAIN CONTENT ── */
main {
  margin-left: var(--nav-w);
  flex: 1;
  padding: 3.5rem 4rem 5rem 4.5rem;
  max-width: calc(var(--nav-w) + var(--content-max) + 8rem);
}

.page { display: none; }
.page.active { display: block; }

/* ── TYPOGRAPHY ── */
h1 {
  font-family: var(--serif);
  font-size: 2rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  color: var(--ink);
}

h2 {
  font-family: var(--serif);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--ink);
  margin: 2.5rem 0 1rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--rule);
  letter-spacing: 0.01em;
}

h3 {
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin: 2rem 0 0.75rem;
}

p { margin-bottom: 1rem; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── HOME PAGE ── */
.home-grid {
  display: grid;
  grid-template-columns: 1fr 180px;
  gap: 3rem;
  align-items: start;
  margin-bottom: 2.5rem;
}

.home-photo {
  width: 180px;
  height: 220px;
  object-fit: cover;
  display: block;
  border: 1px solid var(--rule);
  filter: grayscale(15%);
}

.home-photo-placeholder {
  width: 180px;
  height: 220px;
  background: var(--paper-warm);
  border: 1px solid var(--rule);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--ink-muted);
  letter-spacing: 0.1em;
}

.links-row {
  display: flex;
  gap: 1.5rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

.ext-link {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-light);
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 2px;
  transition: color 0.15s, border-color 0.15s;
}

.ext-link:hover { color: var(--accent); border-color: var(--accent); text-decoration: none; }

/* ── TALKS TABLE ── */
.talks { width: 100%; border-collapse: collapse; margin-top: 0.5rem; font-size: 0.88rem; }
.talks tr { border-bottom: 1px solid var(--rule); }
.talks tr:last-child { border-bottom: none; }
.talks td { padding: 0.55rem 0; vertical-align: top; }
.talks td:first-child {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--ink-muted);
  white-space: nowrap;
  padding-right: 1.5rem;
  width: 60px;
}

/* ── PUBLICATIONS ── */
.pub-item {
  border-bottom: 1px solid var(--rule);
  padding: 1.25rem 0;
}
.pub-item:last-child { border-bottom: none; }

.pub-title-row {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin-bottom: 0.3rem;
  flex-wrap: wrap;
}

.pub-title {
  font-family: var(--serif);
  font-size: 1rem;
  font-weight: 500;
  color: var(--ink);
  line-height: 1.4;
  flex: 1;
  min-width: 200px;
}

.badge {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 2px 7px;
  border-radius: 2px;
  white-space: nowrap;
  flex-shrink: 0;
}

.badge-pub  { background: #e8f0e8; color: #3a6a3a; border: 1px solid #c8dcc8; }
.badge-forth { background: var(--accent-light); color: var(--accent); border: 1px solid #c8d8f0; }
.badge-rr   { background: #fdf3e4; color: #8a6020; border: 1px solid #e8d8b0; }
.badge-rev  { background: var(--paper-warm); color: var(--ink-muted); border: 1px solid var(--rule); }
.badge-wip  { background: #f5eef8; color: #6a3a8a; border: 1px solid #ddc8f0; }
.badge-award { background: #fdf8e4; color: #8a7020; border: 1px solid #e8e0b0; }

.pub-meta {
  font-size: 0.88rem;
  color: var(--ink-light);
  margin-bottom: 0.25rem;
  font-style: italic;
}

.pub-authors {
  font-size: 0.85rem;
  color: var(--ink-muted);
  font-style: normal;
}

.toggle-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-muted);
  padding: 0.4rem 0 0;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: color 0.15s;
}

.toggle-btn:hover { color: var(--accent); }

.toggle-arrow { transition: transform 0.2s; display: inline-block; }
.toggle-arrow.open { transform: rotate(90deg); }

.pub-expandable { display: none; }
.pub-expandable.open { display: block; }

.abstract {
  margin-top: 0.75rem;
  font-size: 0.88rem;
  color: var(--ink-light);
  line-height: 1.7;
  padding-left: 1rem;
  border-left: 2px solid var(--rule);
}

.conf-list {
  margin-top: 0.6rem;
  padding-left: 1rem;
  border-left: 2px solid var(--rule);
}

.conf-list p {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 0.3rem;
}

.conf-list ul {
  list-style: none;
  font-size: 0.83rem;
  color: var(--ink-light);
}

.conf-list li {
  padding: 0.15rem 0;
  padding-left: 1rem;
  position: relative;
}

.conf-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--ink-muted);
}

/* ── TEACHING ── */
.course-item {
  border-bottom: 1px solid var(--rule);
  padding: 1rem 0;
}
.course-item:last-child { border-bottom: none; }
.course-name { font-weight: 500; font-size: 0.98rem; }
.course-meta { font-size: 0.85rem; color: var(--ink-muted); margin-top: 0.15rem; }

/* ── CONTACTS ── */
.contact-grid {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 0.6rem 0;
  font-size: 0.92rem;
  margin-top: 0.5rem;
}

.contact-label {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-muted);
  display: flex;
  align-items: center;
}

/* ── MOBILE ── */
.hamburger {
  display: none;
  position: fixed;
  top: 1rem; left: 1rem;
  z-index: 200;
  background: var(--ink);
  border: none;
  cursor: pointer;
  width: 36px; height: 36px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  border-radius: 3px;
}

.hamburger span {
  display: block;
  width: 18px; height: 1.5px;
  background: var(--paper);
}

@media (max-width: 768px) {
  nav {
    transform: translateX(-100%);
    transition: transform 0.25s;
  }
  nav.open { transform: translateX(0); }
  .hamburger { display: flex; }
  main {
    margin-left: 0;
    padding: 4rem 1.5rem 3rem;
    max-width: 100%;
  }
  .home-grid { grid-template-columns: 1fr; }
  .home-photo, .home-photo-placeholder { width: 130px; height: 160px; }
}