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

:root {
  --primary: #2c5282;
  --primary-light: #3182ce;
  --text: #2d3748;
  --text-light: #718096;
  --bg: #ffffff;
  --bg-alt: #f7fafc;
  --border: #e2e8f0;
  --highlight: #ebf4ff;
  --sidebar-bg: #f8fafc;
  --sidebar-width: 280px;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 24px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  font-size: 15px;
}

a {
  color: var(--primary-light);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--primary);
  text-decoration: underline;
}

/* ===== Layout ===== */
.container {
  display: flex;
  max-width: 1100px;
  margin: 0 auto;
}

/* ===== Sidebar ===== */
.sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  padding: 48px 24px 32px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  border-right: 1px solid var(--border);
  background: var(--sidebar-bg);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.profile {
  text-align: center;
  margin-bottom: 20px;
}

.avatar {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--border);
  margin-bottom: 16px;
  background: var(--bg-alt);
}

.profile h1 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}

.profile .title {
  font-size: 0.88rem;
  color: var(--text-light);
  margin-bottom: 2px;
}

.profile .affiliation {
  font-size: 0.88rem;
  color: var(--primary-light);
  font-weight: 500;
}

.contact-links {
  display: flex;
  gap: 14px;
  margin-bottom: 28px;
  flex-wrap: wrap;
  justify-content: center;
}

.contact-links a {
  font-size: 1.25rem;
  color: var(--text-light);
  transition: color 0.2s, transform 0.2s;
}

.contact-links a:hover {
  color: var(--primary);
  transform: translateY(-2px);
  text-decoration: none;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 100%;
}

.sidebar-nav a {
  display: block;
  padding: 8px 16px;
  border-radius: 6px;
  color: var(--text);
  font-size: 0.92rem;
  font-weight: 500;
  transition: background 0.2s, color 0.2s;
}

.sidebar-nav a:hover {
  background: var(--highlight);
  color: var(--primary);
  text-decoration: none;
}

/* ===== Main Content ===== */
.content {
  flex: 1;
  padding: 48px 40px 40px;
  min-width: 0;
}

section {
  margin-bottom: 48px;
}

h2 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--primary);
  display: inline-block;
}

h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}

section > p {
  margin-bottom: 12px;
}

/* ===== Research Interests ===== */
.research-interests {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.research-interests li {
  background: var(--highlight);
  color: var(--primary);
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
}

/* ===== News ===== */
.news-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.news-item {
  display: flex;
  gap: 16px;
  align-items: baseline;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
}

.news-date {
  flex-shrink: 0;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
  min-width: 72px;
}

/* ===== Publications ===== */
.pub-note {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-bottom: 20px !important;
}

.pub-item {
  display: flex;
  gap: 20px;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
  align-items: flex-start;
}

.pub-item-compact {
  padding: 14px 0;
}

.pub-item-compact .pub-info {
  flex: 1;
}

.pub-figure {
  flex-shrink: 0;
  width: 180px;
  height: 120px;
  background: var(--bg-alt);
  border-radius: 8px;
  border: 1px solid var(--border);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

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

.pub-title {
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 4px;
  color: var(--text);
  line-height: 1.4;
}

.pub-authors {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-bottom: 4px;
  line-height: 1.5;
}

.highlight-author {
  color: var(--primary);
  font-weight: 600;
}

.pub-venue {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-bottom: 8px;
}

.pub-links {
  display: flex;
  gap: 8px;
}

.pub-link {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 3px 10px;
  border: 1px solid var(--primary-light);
  border-radius: 4px;
  color: var(--primary-light);
  transition: all 0.2s;
}

.pub-link:hover {
  background: var(--primary-light);
  color: #fff;
  text-decoration: none;
}

/* ===== Experience & Education ===== */
.exp-list, .edu-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.exp-item, .edu-item {
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}

.exp-header, .edu-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
}

.exp-role, .edu-degree {
  font-size: 0.9rem;
  color: var(--text-light);
  font-style: italic;
}

.exp-meta, .edu-meta {
  text-align: right;
  flex-shrink: 0;
}

.exp-location, .edu-location {
  display: block;
  font-size: 0.85rem;
  color: var(--text-light);
}

.exp-date, .edu-date {
  display: block;
  font-size: 0.82rem;
  color: var(--text-light);
}

/* ===== Footer ===== */
footer {
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-light);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .container {
    flex-direction: column;
  }

  .sidebar {
    position: relative;
    width: 100%;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: 32px 24px 24px;
  }

  .sidebar-nav {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
  }

  .sidebar-nav a {
    padding: 6px 12px;
    font-size: 0.85rem;
  }

  .content {
    padding: 32px 20px;
  }

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

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

  .exp-header, .edu-header {
    flex-direction: column;
    gap: 4px;
  }

  .exp-meta, .edu-meta {
    text-align: left;
  }
}