:root {
  --ink: #262320;
  --ink-soft: #52483f;
  --paper: #faf7f2;
  --rule: #ded5c6;
  --accent: #7a3b2e;
  --serif: "Source Serif 4", Georgia, serif;
  --sans: "IBM Plex Sans", -apple-system, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); }

/* Top bar */
.topbar {
  border-bottom: 1px solid var(--rule);
}

.topbar-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 18px clamp(24px, 4vw, 56px);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
  box-sizing: border-box;
}

.topbar-name {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--ink);
  text-decoration: none;
}

.topnav {
  display: flex;
  gap: 22px;
  font-family: var(--sans);
  font-size: 0.92rem;
}

.topnav a {
  color: var(--ink-soft);
  text-decoration: none;
}

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

.topnav a.active {
  font-weight: 600;
}

/* Layout */
.layout {
  display: flex;
  max-width: 1400px;
  margin: 0 auto;
  align-items: flex-start;
  gap: clamp(24px, 4vw, 64px);
  padding: 0 clamp(24px, 4vw, 56px);
  box-sizing: border-box;
}

/* Sidebar */
.sidebar {
  width: 260px;
  flex-shrink: 0;
  padding: 40px 0;
}

.avatar {
  width: 130px;
  height: 130px;
  border-radius: 50%;
  background: var(--rule);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--sans);
  font-size: 0.75rem;
  color: var(--ink-soft);
  text-align: center;
  overflow: hidden;
}

.avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.sidebar h1 {
  font-size: 1.5rem;
  font-weight: 600;
  margin: 0 0 6px;
  letter-spacing: -0.01em;
}

.sidebar .role {
  font-family: var(--sans);
  color: var(--ink-soft);
  font-size: 0.9rem;
  margin: 0 0 20px;
  line-height: 1.5;
}

.sidebar .contact-links {
  font-family: var(--sans);
  font-size: 0.85rem;
}

.sidebar .contact-links a {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--ink);
  text-decoration: none;
  margin-bottom: 10px;
}

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

.sidebar .contact-links .icon {
  flex-shrink: 0;
  color: var(--ink-soft);
}

.sidebar .contact-links a:hover .icon {
  color: var(--accent);
}

/* Main content */
main {
  flex: 1;
  min-width: 0;
  padding: 40px 0 64px;
}

main .lede,
main .paper p {
  max-width: 900px;
}

main .page-title {
  font-family: var(--sans);
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--ink);
  margin: 0 0 20px;
}

.lede {
  font-size: 1.1rem;
  color: var(--ink-soft);
}

.lede p {
  margin: 0 0 18px;
}

/* Papers */
.paper {
  margin-bottom: 32px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--rule);
}

.paper:last-child {
  border-bottom: none;
}

.paper h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0 0 4px;
}

.paper .meta {
  font-family: var(--sans);
  font-size: 0.85rem;
  color: var(--ink-soft);
  margin: 0 0 10px;
}

.paper p {
  margin: 0 0 10px;
}

.paper .links a {
  font-family: var(--sans);
  font-size: 0.85rem;
  margin-right: 14px;
}

/* Teaching */
.course {
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--rule);
}

.course:last-child {
  border-bottom: none;
}

.course h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin: 0 0 4px;
}

.course .meta {
  font-family: var(--sans);
  font-size: 0.85rem;
  color: var(--ink-soft);
  margin: 0 0 8px;
}

/* CV page */
.cv-box {
  font-family: var(--sans);
  border: 1px solid var(--rule);
  padding: 24px;
  border-radius: 4px;
}

.cv-box a.download-btn {
  display: inline-block;
  background: var(--accent);
  color: var(--paper);
  text-decoration: none;
  padding: 10px 18px;
  font-size: 0.9rem;
  border-radius: 3px;
  margin-top: 10px;
}

.cv-box p {
  margin: 0 0 4px;
}

/* Mobile */
@media (max-width: 760px) {
  .topbar-inner {
    padding: 16px 20px;
  }
  .layout {
    flex-direction: column;
    padding: 0 20px;
  }
  .sidebar {
    width: 100%;
    padding: 32px 0 24px;
  }
  main {
    padding: 32px 0 56px;
  }
}