/* ===== Base Reset & Typography ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.7;
  color: #333;
  background-color: #fff;
}

a {
  color: #2563eb;
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: #1d4ed8;
  text-decoration: underline;
}

/* ===== Navigation ===== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #fff;
  border-bottom: 1px solid #eee;
}

.nav-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

.nav-links {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 12px 0;
}

.nav-links li a {
  padding: 5px 12px;
  border-radius: 4px;
  font-size: 0.88em;
  font-weight: 500;
  color: #555;
  transition: background 0.2s, color 0.2s;
}

.nav-links li a:hover {
  background: #f5f5f5;
  color: #2563eb;
  text-decoration: none;
}

/* ===== Main Layout ===== */
.main-content {
  max-width: 1100px;
  margin: 0 auto;
  padding: 36px 20px;
  display: flex;
  gap: 45px;
  align-items: flex-start;
}

/* ===== Sidebar ===== */
.sidebar {
  position: sticky;
  top: 70px;
  width: 240px;
  flex-shrink: 0;
}

.profile-card {
  text-align: center;
}

.profile-photo {
  width: 170px;
  height: 170px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 14px;
}

.profile-name {
  font-size: 1.2em;
  font-weight: 700;
  color: #111;
  margin-bottom: 4px;
}

.profile-title {
  font-size: 0.9em;
  color: #666;
  margin-bottom: 2px;
}

.profile-affiliation {
  font-size: 0.85em;
  color: #666;
  margin-bottom: 6px;
}

.profile-location {
  font-size: 0.82em;
  color: #999;
  margin-bottom: 14px;
}

.profile-location i {
  margin-right: 3px;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 12px;
}

.social-links a {
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: #f3f4f6;
  color: #555;
  font-size: 1em;
  transition: background 0.2s, color 0.2s;
}

.social-links a:hover {
  background: #2563eb;
  color: #fff;
  text-decoration: none;
}

/* ===== Content Area ===== */
.content {
  flex: 1;
  min-width: 0;
}

.section {
  margin-bottom: 32px;
}

.section h1 {
  font-size: 1.2em;
  font-weight: 600;
  color: #222;
  padding-bottom: 8px;
  border-bottom: 1px solid #eee;
  margin-bottom: 16px;
}

.section h1 .emoji {
  margin-right: 6px;
}

/* ===== About Section ===== */
#about-me p {
  margin-bottom: 12px;
  font-size: 0.93em;
  color: #374151;
}

/* ===== News Section ===== */
.news-list {
  list-style: none;
}

.news-list li {
  padding: 7px 0;
  font-size: 0.9em;
  border-bottom: none;
}

.news-date {
  display: inline-block;
  font-weight: 600;
  color: #888;
  min-width: 68px;
  margin-right: 10px;
}

/* ===== Publications ===== */
.pub-item {
  display: flex;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid #f0f0f0;
}

.pub-item:last-child {
  border-bottom: none;
}

.pub-item:hover {
  background: none;
}

.pub-image {
  flex-shrink: 0;
  width: 180px;
  height: 110px;
  overflow: hidden;
  border-radius: 4px;
  background: #f8f8f8;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.pub-content {
  flex: 1;
  min-width: 0;
}

.pub-venue {
  display: inline-block;
  background: #eff6ff;
  color: #1d4ed8;
  padding: 1px 8px;
  border-radius: 3px;
  font-size: 0.75em;
  font-weight: 600;
  margin-bottom: 4px;
}

.pub-content h4 {
  font-size: 0.93em;
  margin-bottom: 4px;
  line-height: 1.4;
  font-weight: 600;
}

.pub-content h4 a {
  color: #111;
}

.pub-content h4 a:hover {
  color: #2563eb;
}

.pub-authors {
  font-size: 0.82em;
  color: #666;
  margin-bottom: 3px;
  line-height: 1.5;
}

.pub-role {
  font-size: 0.8em;
  color: #444;
  margin-bottom: 6px;
}

.pub-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 6px;
}

.pub-links a {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 2px 8px;
  background: #f3f4f6;
  border-radius: 3px;
  font-size: 0.78em;
  font-weight: 500;
  color: #374151;
  transition: background 0.2s;
}

.pub-links a:hover {
  background: #e5e7eb;
  text-decoration: none;
}

.pub-links a i {
  font-size: 0.85em;
}

.pub-tldr {
  font-size: 0.8em;
  color: #777;
  font-style: italic;
  line-height: 1.5;
}

/* ===== Timeline (Education & Internships) ===== */
.timeline-list {
  list-style: none;
}

.timeline-list li {
  margin-bottom: 12px;
}

.timeline-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 8px 0;
}

.timeline-date {
  flex-shrink: 0;
  font-size: 0.8em;
  font-weight: 600;
  color: #888;
  min-width: 120px;
  padding-top: 1px;
}

.timeline-content {
  font-size: 0.9em;
  color: #374151;
  line-height: 1.6;
}

.timeline-detail {
  font-size: 0.88em;
  color: #777;
}

.timeline-logo {
  width: 20px;
  height: 20px;
  vertical-align: middle;
  margin-right: 5px;
}

/* ===== Awards ===== */
.awards-list {
  list-style: none;
}

.awards-list li {
  padding: 8px 0;
  font-size: 0.88em;
  color: #444;
}

.awards-list li i {
  margin-right: 8px;
  color: #f59e0b;
}

.awards-list li i.fa-file-alt {
  color: #999;
}

/* ===== Footer ===== */
.footer {
  margin-top: 40px;
  padding: 16px 0;
  border-top: 1px solid #eee;
  text-align: center;
  font-size: 0.8em;
  color: #aaa;
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .main-content {
    flex-direction: column;
    padding: 20px 16px;
    gap: 24px;
  }

  .sidebar {
    position: static;
    width: 100%;
  }

  .pub-item {
    flex-direction: column;
  }

  .pub-image {
    width: 100%;
    height: 160px;
  }

  .timeline-item {
    flex-direction: column;
    gap: 4px;
  }

  .timeline-date {
    min-width: unset;
  }
}

@media (max-width: 480px) {
  .nav-links {
    gap: 3px;
  }

  .nav-links li a {
    padding: 4px 7px;
    font-size: 0.8em;
  }

  .profile-photo {
    width: 130px;
    height: 130px;
  }
}