/* Base styles */
:root {
  --text-color: #000;
  --bg-color: #fff;
  --link-color: #0d6efd;
  --border-color: #dee2e6;
}

[data-theme="dark"] {
  --text-color: #fff;
  --bg-color: #1a1a1a;
  --link-color: #6ea8fe;
  --border-color: #444;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text-color);
  background-color: var(--bg-color);
  line-height: 1.6;
  transition: background-color 0.3s ease, color 0.3s ease;
}

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

a:hover {
  text-decoration: underline;
}

/* Navigation */
.navbar {
  background-color: var(--bg-color);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 0;
}

.navbar-brand {
  font-size: 1.5rem;
  font-weight: 300;
}

.nav-link {
  color: var(--text-color) !important;
  margin: 0 0.5rem;
}

#theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-color);
  padding: 0.5rem;
}

/* About page profile */
.profile {
  margin: 2rem 0;
  max-width: 300px;
}

.profile img {
  width: 100%;
  height: auto;
  border-radius: 8px;
}

.more-info {
  margin-top: 1rem;
  font-size: 0.9rem;
  color: #666;
}

[data-theme="dark"] .more-info {
  color: #999;
}

/* Post title */
.post-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.desc {
  font-size: 1.2rem;
  color: #666;
  margin-bottom: 2rem;
}

[data-theme="dark"] .desc {
  color: #999;
}

/* Content */
.content {
  font-size: 1.1rem;
  margin: 2rem 0;
}

/* News section */
.news {
  margin-top: 3rem;
}

.news h2 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
  font-weight: 600;
}

.news-date {
  width: 120px;
  font-weight: 600;
}

.table {
  color: var(--text-color);
}

/* Social icons */
.social-icons {
  display: flex;
  gap: 1rem;
  font-size: 1.5rem;
}

.social-icons a {
  color: var(--text-color);
  transition: opacity 0.2s ease;
}

.social-icons a:hover {
  opacity: 0.7;
  text-decoration: none;
}

/* Footer */
footer {
  padding: 2rem 0;
  text-align: center;
  border-top: 1px solid var(--border-color);
  margin-top: 3rem;
  font-size: 0.9rem;
  color: #666;
}

[data-theme="dark"] footer {
  color: #999;
}

/* Fixed navbar spacing */
.fixed-top-nav {
  padding-top: 80px;
}

/* Responsive */
@media (max-width: 768px) {
  .profile {
    float: none !important;
    margin: 0 auto 2rem;
  }
  
  .post-title {
    font-size: 2rem;
  }
}

/* Post list */
.post-preview {
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border-color);
}

.post-preview h2 {
  font-size: 1.8rem;
  margin-bottom: 0.5rem;
}

.post-meta {
  color: #666;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

[data-theme="dark"] .post-meta {
  color: #999;
}

.post-entry {
  margin-bottom: 1rem;
}

.read-more {
  font-weight: 600;
}

/* Post tags */
.post-tags {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

.post-tags a {
  display: inline-block;
  padding: 0.25rem 0.5rem;
  margin-right: 0.5rem;
  background-color: rgba(0, 0, 0, 0.05);
  border-radius: 4px;
  font-size: 0.9rem;
}

[data-theme="dark"] .post-tags a {
  background-color: rgba(255, 255, 255, 0.1);
}

/* Projects */
.projects {
  margin-top: 2rem;
}

.projects .category {
  font-size: 1.8rem;
  margin: 2rem 0 1rem;
  font-weight: 600;
  text-transform: capitalize;
}

/* Publications */
.publications {
  margin-top: 2rem;
}

.publications h2 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
  font-weight: 600;
}