/* ============================================
   Custom Styles for Liang Cao's Academic Website
   Modern, clean design inspired by top research group pages
   ============================================ */

/* Typography */
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: #2d3748;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Source Serif 4', 'Georgia', serif;
  color: #1a202c;
  font-weight: 600;
}

/* Masthead / Navigation */
.masthead {
  background: #f0f2f5;
  border-bottom: 1px solid #e2e8f0;
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}

.masthead__inner-wrap {
  max-width: 1200px;
  margin: 0 auto;
}

.greedy-nav {
  background: transparent !important;
  display: flex !important;
  align-items: center;
  justify-content: center;
  min-width: 0 !important;
}

.greedy-nav .visible-links {
  display: flex !important;
  align-items: center;
  justify-content: center;
  flex-wrap: nowrap;
  overflow: visible !important;
}

.greedy-nav .visible-links li {
  display: inline-block !important;
  float: none !important;
  visibility: visible !important;
  opacity: 1 !important;
}

.greedy-nav .hidden-links {
  display: none !important;
}

.greedy-nav button {
  display: none !important;
}

.greedy-nav a {
  margin: 0 0.5rem !important;
}

.masthead__menu-item--lg a {
  font-family: 'Source Serif 4', Georgia, serif !important;
  font-weight: 700 !important;
  font-size: 1.15em !important;
  color: #1a365d !important;
  padding-right: 8px !important;
}

.masthead__menu-item--lg a:hover {
  color: #2c5282 !important;
}

.masthead__menu-item a {
  font-size: 0.88em;
  font-weight: 500;
  letter-spacing: 0.02em;
  padding: 6px 12px;
  border-radius: 20px;
  transition: all 0.2s ease;
  color: #4a5568 !important;
  white-space: nowrap;
}

.masthead__menu-item a:hover {
  background: #e2e8f0;
  color: #1a365d !important;
  text-decoration: none;
}

/* Author Profile Sidebar */
.author__avatar img {
  border-radius: 50% !important;
  border: 3px solid #e2e8f0;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  transition: transform 0.3s ease;
}

.author__avatar img:hover {
  transform: scale(1.05);
  border-color: #2c5282;
}

.author__name {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 1.3em !important;
  color: #1a365d;
  margin-bottom: 4px;
}

.author__bio {
  font-size: 0.88em;
  color: #4a5568;
  line-height: 1.5;
}

.author__urls-wrapper {
  margin-top: 8px;
}

.author__urls li a {
  color: #4a5568;
  font-size: 0.9em;
  transition: color 0.2s;
}

.author__urls li a:hover {
  color: #2c5282;
}

.btn--inverse {
  background: #2c5282 !important;
  color: #fff !important;
  border: none !important;
  border-radius: 20px !important;
  font-size: 0.82em !important;
  padding: 6px 20px !important;
  transition: all 0.2s ease;
}

.btn--inverse:hover {
  background: #1a365d !important;
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(44,82,130,0.3);
}

/* Page Content */
.page__title {
  font-family: 'Source Serif 4', Georgia, serif;
  color: #1a365d;
  font-weight: 700;
  font-size: 1.8em;
  border-bottom: 3px solid #2c5282;
  padding-bottom: 8px;
  margin-bottom: 20px;
}

/* Archive items (publications, talks, etc.) */
.archive__item {
  padding: 12px 16px;
  margin-bottom: 8px;
  border-radius: 6px;
  border-left: 3px solid transparent;
  transition: all 0.2s ease;
}

.archive__item:hover {
  background: #f7fafc;
  border-left-color: #2c5282;
}

.archive__item-title {
  font-family: 'Inter', sans-serif;
  font-size: 1em !important;
  font-weight: 600;
  color: #2d3748;
  line-height: 1.4;
}

.archive__item-title a {
  color: #2d3748;
  text-decoration: none;
}

.archive__item-title a:hover {
  color: #2c5282;
}

.archive__item-excerpt {
  font-size: 0.88em;
  color: #718096;
}

/* Links */
a {
  color: #2b6cb0;
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: #1a365d;
  text-decoration: underline;
}

/* Footer */
.page__footer {
  background: #1a202c;
  color: #a0aec0;
  border-top: 3px solid #2c5282;
}

.page__footer a {
  color: #90cdf4;
}

/* Responsive improvements */
@media (max-width: 768px) {
  .highlights-grid {
    grid-template-columns: 1fr !important;
  }
  .news-section {
    padding: 14px 16px !important;
  }
}

/* Print styles */
@media print {
  .masthead, .page__footer, .btn--inverse, .author__urls-wrapper button {
    display: none;
  }
}

/* Smooth scrolling */
html {
  scroll-behavior: smooth;
}

/* Selection color */
::selection {
  background: #bee3f8;
  color: #1a365d;
}

/* Publication venue highlighting */
.archive__item-excerpt em {
  color: #2c5282;
  font-style: italic;
}