/* Research Overview */ 
.research-overview {
  padding: 80px 0;
}

.overview-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}

.overview-text p {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--text-color);
  margin-bottom: 20px;
}

.overview-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 30px;
  margin-top: 40px;
}

.stat-item {
  text-align: center;
  flex: 1;
  min-width: 100px;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 5px;
}

.stat-label {
  font-size: 1rem;
  color: var(--text-light);
}

.overview-image img {
  width: 100%;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow);
}

/* Research Areas */
.research-areas {
  background-color: var(--bg-light);
  padding: 80px 0;
}

.areas-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.area-card {
  background-color: white;
  padding: 30px;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow);
  transition: var(--transition);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.area-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
}

.area-icon {
  width: 70px;
  height: 70px;
  background-color: var(--primary-light);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.8rem;
}

.area-card h3 {
  font-size: 1.3rem;
  margin-bottom: 15px;
  color: var(--primary-color);
}

.area-card p {
  color: var(--text-color);
  margin-bottom: 20px;
  line-height: 1.6;
}

.area-topics {
  list-style: disc;
  padding-left: 20px;
  margin-bottom: 25px;
}

.area-topics li {
  margin-bottom: 8px;
  color: var(--text-color);
}

.area-card .btn {
  margin-top: auto;
}

/* Featured Projects */
.featured-projects {
  padding: 80px 0;
}

.projects-grid {
  display: flex;
  flex-direction: column;
  gap: 40px;
  margin-bottom: 40px;
}

.project-card {
  background-color: white;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  display: grid;
  grid-template-columns: 1fr 2fr;
  transition: var(--transition);
}

.project-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.project-image {
  position: relative;
  height: 100%;
}

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

.project-category {
  position: absolute;
  top: 20px;
  left: 20px;
  background-color: var(--primary-color);
  color: white;
  padding: 5px 15px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
}

.project-content {
  padding: 30px;
}

.project-content h3 {
  font-size: 1.5rem;
  color: var(--primary-color);
  margin-bottom: 15px;
  font-family: var(--font-secondary);
}

.project-content p {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--text-color);
  margin-bottom: 20px;
}

.project-details {
  background-color: var(--bg-light);
  padding: 15px 20px;
  border-radius: var(--border-radius);
  margin-bottom: 25px;
}

.detail {
  display: flex;
  margin-bottom: 10px;
}

.detail:last-child {
  margin-bottom: 0;
}

.label {
  font-weight: 600;
  color: var(--text-color);
  width: 150px;
}

.value {
  flex: 1;
  color: var(--text-light);
}

.projects-more {
  text-align: center;
}

/* Research Centers */
.research-centers {
  background-color: var(--bg-light);
  padding: 80px 0;
}

.centers-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.center-card {
  background-color: white;
  padding: 30px;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow);
  transition: var(--transition);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.center-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
}

.center-icon {
  width: 70px;
  height: 70px;
  background-color: var(--primary-light);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.8rem;
}

.center-card h3 {
  font-size: 1.3rem;
  margin-bottom: 15px;
  color: var(--primary-color);
}

.center-card p {
  color: var(--text-color);
  margin-bottom: 20px;
  line-height: 1.6;
  flex-grow: 1;
}

.link-arrow {
  color: var(--primary-color);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: var(--transition);
  margin-top: auto;
}

.link-arrow:hover {
  gap: 8px;
}

/* Research Publications */
.research-publications {
  padding: 80px 0;
}

.publications-list {
  display: flex;
  flex-direction: column;
  gap: 30px;
  margin-bottom: 40px;
}

.publication-item {
  background-color: white;
  padding: 30px;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.publication-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.publication-meta {
  display: flex;
  justify-content: space-between;
  margin-bottom: 15px;
}

.publication-type {
  display: inline-block;
  padding: 5px 15px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
  color: white;
}

.publication-type.journal {
  background-color: var(--primary-color);
}

.publication-type.book {
  background-color: var(--success-color);
}

.publication-type.report {
  background-color: var(--info-color);
}

.publication-date {
  color: var(--text-lighter);
  font-size: 0.9rem;
}

.publication-title {
  font-size: 1.3rem;
  color: var(--text-color);
  margin-bottom: 10px;
  font-family: var(--font-secondary);
}

.publication-authors {
  color: var(--text-light);
  margin-bottom: 5px;
  font-style: italic;
}

.publication-journal {
  color: var(--text-light);
  margin-bottom: 15px;
}

.publication-abstract {
  background-color: var(--bg-light);
  padding: 15px 20px;
  border-radius: var(--border-radius);
  margin-bottom: 20px;
}

.publication-abstract p {
  color: var(--text-color);
  line-height: 1.6;
  margin: 0;
}

.publication-links {
  display: flex;
  gap: 20px;
}

.publication-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--primary-color);
  font-weight: 500;
  transition: var(--transition);
}

.publication-link:hover {
  color: var(--primary-dark);
}

.publications-more {
  text-align: center;
}

/* Research Opportunities */
.research-opportunities {
  background-color: var(--bg-light);
  padding: 80px 0;
}

.opportunities-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.opportunity-card {
  background-color: white;
  padding: 30px;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow);
  text-align: center;
  transition: var(--transition);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.opportunity-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
}

.opportunity-icon {
  width: 80px;
  height: 80px;
  background-color: var(--primary-light);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 2rem;
}

.opportunity-card h3 {
  font-size: 1.3rem;
  margin-bottom: 15px;
  color: var(--primary-color);
}

.opportunity-card p {
  color: var(--text-color);
  margin-bottom: 25px;
  line-height: 1.6;
  flex-grow: 1;
}