/* ===== Personal Academic Website — Classic Academic Style ===== */

@import url('https://fonts.googleapis.com/css2?family=EB+Garamond:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500&family=Source+Sans+3:wght@400;500;600&display=swap');

:root {
  --color-bg: #faf8f5;
  --color-surface: #ffffff;
  --color-text: #1a1a1a;
  --color-body: #3d3833;
  --color-muted: #7a746b;
  --color-accent: #8b2332;
  --color-accent-hover: #6e1a28;
  --color-border: #e0dbd4;
  --color-border-light: #ece8e2;
  --color-warm-bg: #f3f0eb;
  --font-heading: 'EB Garamond', 'Georgia', 'Times New Roman', serif;
  --font-body: 'Source Sans 3', 'Helvetica Neue', Arial, sans-serif;
  --max-width: 760px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 2px 8px rgba(0,0,0,0.08);
}

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

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

body {
  font-family: var(--font-body);
  color: var(--color-body);
  background: var(--color-bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s, color 0.2s;
}
a:hover {
  color: var(--color-accent-hover);
  border-bottom-color: var(--color-accent-hover);
  text-decoration: none;
}

img { max-width: 100%; display: block; }

/* ===== Navigation ===== */
header.site-header {
  background: var(--color-surface);
  border-bottom: 2px solid var(--color-border);
  padding: 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

nav .site-name {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.35rem;
  color: var(--color-text);
  letter-spacing: 0.01em;
}
nav .site-name:hover { border-bottom-color: transparent; }

nav .nav-links { display: flex; gap: 1.75rem; }

nav .nav-links a {
  color: var(--color-muted);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-bottom: 2px solid transparent;
  padding-bottom: 2px;
  transition: color 0.2s, border-color 0.2s;
}
nav .nav-links a:hover {
  color: var(--color-text);
  border-bottom-color: var(--color-accent);
}
nav .nav-links a.active {
  color: var(--color-text);
  border-bottom-color: var(--color-accent);
}

/* ===== Main content ===== */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.75rem 2rem 4rem;
}

h1 {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.4rem;
  letter-spacing: 0.01em;
}

h2 {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--color-text);
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--color-border-light);
}

p { margin-bottom: 1rem; }

hr.section-rule {
  border: none;
  border-top: 1px solid var(--color-border-light);
  margin: 2.5rem 0;
}

/* ===== Home / Bio ===== */
.profile-section {
  display: flex;
  gap: 2.25rem;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.profile-photo {
  width: 175px;
  height: 175px;
  border-radius: 6px;
  object-fit: cover;
  flex-shrink: 0;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
}

.profile-info { flex: 1; }

.profile-info .subtitle {
  font-family: var(--font-heading);
  font-style: italic;
  color: var(--color-muted);
  font-size: 1.05rem;
  margin-bottom: 1rem;
  line-height: 1.5;
}

.profile-links {
  display: flex;
  gap: 0.5rem;
  margin-top: 1.25rem;
  flex-wrap: wrap;
}

.profile-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-accent);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 0.35rem 0.75rem;
  transition: background 0.2s, border-color 0.2s, box-shadow 0.2s;
  border-bottom: 1px solid var(--color-border);
}
.profile-links a:hover {
  background: var(--color-warm-bg);
  border-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}

/* ===== News items ===== */
.news-list {
  list-style: none;
  margin-top: 0.5rem;
}

.news-list li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--color-border-light);
  font-size: 0.95rem;
}
.news-list li:last-child { border-bottom: none; }

.news-date {
  display: inline-block;
  min-width: 90px;
  font-weight: 600;
  color: var(--color-muted);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

/* ===== Publications ===== */
.pub-year {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 600;
  margin-top: 2rem;
  margin-bottom: 0.5rem;
  color: var(--color-accent);
}

.pub-item {
  padding: 1rem 1.15rem;
  margin-bottom: 0.75rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-left: 3px solid var(--color-accent);
  border-radius: 3px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s;
}
.pub-item:hover {
  box-shadow: var(--shadow-md);
}

.pub-title {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--color-text);
  margin-bottom: 0.3rem;
  line-height: 1.4;
}

.pub-authors {
  font-size: 0.88rem;
  color: var(--color-body);
  margin-bottom: 0.2rem;
}

.pub-venue {
  font-size: 0.88rem;
  font-style: italic;
  color: var(--color-muted);
}

.pub-links {
  margin-top: 0.5rem;
  display: flex;
  gap: 0.5rem;
}

.pub-links a {
  font-size: 0.78rem;
  font-weight: 500;
  padding: 0.2rem 0.6rem;
  border: 1px solid var(--color-border);
  border-radius: 3px;
  color: var(--color-accent);
  background: var(--color-bg);
  transition: background 0.15s, border-color 0.15s;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.pub-links a:hover {
  background: var(--color-warm-bg);
  border-color: var(--color-accent);
}

/* ===== Contact ===== */
.contact-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: 5px;
  padding: 1.75rem;
  margin-top: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.contact-list {
  list-style: none;
}

.contact-list li {
  padding: 0.65rem 0;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.95rem;
  border-bottom: 1px solid var(--color-border-light);
}
.contact-list li:last-child { border-bottom: none; }

.contact-list .label {
  font-weight: 600;
  min-width: 100px;
  color: var(--color-muted);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.address-block {
  margin-top: 1.5rem;
  padding: 1.25rem 1.5rem;
  background: var(--color-warm-bg);
  border-radius: 4px;
  font-size: 0.95rem;
  line-height: 1.8;
}

/* ===== Footer ===== */
footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem;
  text-align: center;
  font-size: 0.78rem;
  color: var(--color-muted);
  border-top: 2px solid var(--color-border);
  letter-spacing: 0.02em;
}

/* ===== Responsive ===== */
@media (max-width: 600px) {
  html { font-size: 16px; }
  .profile-section {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  .profile-photo { width: 140px; height: 140px; }
  .profile-links { justify-content: center; }
  nav { flex-direction: column; gap: 0.5rem; align-items: center; }
  nav .nav-links { gap: 1.25rem; }
  main { padding: 2rem 1.25rem 3rem; }
}