/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #ffffff;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
}

h1 {
    font-size: 3.5rem;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 1.8rem;
}

p {
    font-size: 1.1rem;
    line-height: 1.7;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.nav-logo h2 {
    font-size: 2rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
}

.nav-logo span {
    font-size: 0.9rem;
    color: #666;
    font-weight: 400;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #667eea;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    position: relative;
    overflow: hidden;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.hero-content {
    z-index: 2;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: #666;
    margin-bottom: 2.5rem;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
}

.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
}

.btn-secondary {
    background: transparent;
    color: #667eea;
    border: 2px solid #667eea;
}

.btn-secondary:hover {
    background: #667eea;
    color: white;
    transform: translateY(-2px);
}

/* Hero Visual */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.visual-element {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    position: relative;
}

.floating-shapes {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

.shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.3;
}

.shape-1 {
    width: 60px;
    height: 60px;
    background: #667eea;
    top: 20%;
    left: 10%;
}

.shape-2 {
    width: 80px;
    height: 80px;
    background: #764ba2;
    top: 60%;
    right: 20%;
}

.shape-3 {
    width: 40px;
    height: 40px;
    background: #f093fb;
    bottom: 30%;
    left: 20%;
}

/* Section Styles */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    margin-bottom: 1rem;
    color: #333;
}

.section-header p {
    color: #666;
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Research Section */
.research-section {
    padding: 6rem 0;
    background: #f8f9fa;
}

.research-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.research-card {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
}

.research-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.card-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.card-icon i {
    font-size: 1.5rem;
    color: white;
}

.research-card h3 {
    margin-bottom: 1rem;
    color: #333;
}

.research-card p {
    color: #666;
    margin-bottom: 1.5rem;
}

.research-topics {
    list-style: none;
}

.research-topics li {
    padding: 0.3rem 0;
    color: #555;
    position: relative;
    padding-left: 1.5rem;
}

.research-topics li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: #667eea;
    font-weight: bold;
}

/* Projects Section */
.projects-section {
    padding: 6rem 0;
    background: white;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.project-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.project-image {
    height: 200px;
    position: relative;
    overflow: hidden;
}

.project-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-placeholder i {
    font-size: 3rem;
    color: #666;
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(102, 126, 234, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-link {
    color: white;
    text-decoration: none;
    font-weight: 600;
    padding: 0.5rem 1.5rem;
    border: 2px solid white;
    border-radius: 25px;
    transition: all 0.3s ease;
}

.project-link:hover {
    background: white;
    color: #667eea;
}

.project-content {
    padding: 2rem;
}

.project-content h3 {
    margin-bottom: 1rem;
    color: #333;
}

.project-content p {
    color: #666;
    margin-bottom: 1.5rem;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag {
    background: #667eea;
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.9rem;
    font-weight: 500;
}

/* Publications Section */
.publications-section {
    padding: 6rem 0;
    background: #f8f9fa;
}

.publications-list {
    max-width: 800px;
    margin: 0 auto;
}

.publication-item {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    margin-bottom: 2rem;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid #e9ecef;
}

.publication-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.publication-year {
    background: #667eea;
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.9rem;
    font-weight: 500;
}

.publication-venue {
    background: #e9ecef;
    color: #666;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.9rem;
}

.publication-item h3 {
    margin-bottom: 0.5rem;
    color: #333;
}

.publication-authors {
    color: #666;
    font-style: italic;
    margin-bottom: 1rem;
}

.publication-abstract {
    color: #555;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.publication-links {
    display: flex;
    gap: 1rem;
}

.pub-link {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.pub-link:hover {
    color: #764ba2;
}

/* Team Section */
.team-section {
    padding: 6rem 0;
    background: white;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.team-member {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
}

.team-member:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.member-photo {
    width: 120px;
    height: 120px;
    margin: 0 auto 1.5rem;
    border-radius: 50%;
    overflow: hidden;
}

.photo-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.photo-placeholder i {
    font-size: 2.5rem;
    color: white;
}

.team-member h3 {
    margin-bottom: 0.5rem;
    color: #333;
}

.member-title {
    color: #667eea;
    font-weight: 600;
    margin-bottom: 1rem;
}

.member-bio {
    color: #666;
    margin-bottom: 1.5rem;
    font-size: 1rem;
}

.member-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.member-links a {
    width: 40px;
    height: 40px;
    background: #f8f9fa;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #666;
    transition: all 0.3s ease;
}

.member-links a:hover {
    background: #667eea;
    color: white;
    transform: translateY(-2px);
}

/* Contact Section */
.contact-section {
    padding: 6rem 0;
    background: #f8f9fa;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    align-items: start;
}

.contact-form-and-map {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: start;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 2rem;
    gap: 1rem;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon i {
    color: white;
    font-size: 1.2rem;
}

.contact-details h3 {
    margin-bottom: 0.5rem;
    color: #333;
}

.contact-details p {
    color: #666;
    line-height: 1.6;
}

.contact-form {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #333;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* Location Section Styles */
.location-section {
    padding: 6rem 0;
    background: #f8f9fa;
}

.location-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.location-details {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.location-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid #e9ecef;
    transition: all 0.3s ease;
}

.location-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
}

.location-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.location-icon i {
    color: white;
    font-size: 1.2rem;
}

.location-text h3 {
    color: #333;
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.location-text p {
    color: #666;
    line-height: 1.6;
    margin: 0;
}

.map-container {
    position: relative;
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    border: 1px solid #e9ecef;
}

.map-wrapper {
    position: relative;
    height: 450px;
}

.map-wrapper iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.map-overlay {
    position: absolute;
    top: 20px;
    left: 20px;
    background: rgba(255, 255, 255, 0.95);
    padding: 1.5rem;
    border-radius: 10px;
    backdrop-filter: blur(10px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    max-width: 250px;
}

.map-info h4 {
    color: #333;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.map-info p {
    color: #666;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.directions-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-decoration: none;
    padding: 0.6rem 1.2rem;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.directions-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

.transportation-info {
    text-align: center;
}

.transportation-info h3 {
    color: #333;
    margin-bottom: 2rem;
    font-size: 2rem;
}

.transport-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.transport-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid #e9ecef;
    transition: all 0.3s ease;
}

.transport-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
}

.transport-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.transport-icon i {
    color: white;
    font-size: 1.8rem;
}

.transport-card h4 {
    color: #333;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.transport-card p {
    color: #666;
    line-height: 1.6;
}

/* Footer */
.footer {
    background: #2c3e50;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
    color: white;
}

.footer-section h4 {
    margin-bottom: 1rem;
    color: #ecf0f1;
}

.footer-section p {
    color: #bdc3c7;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: #bdc3c7;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #667eea;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: #34495e;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #bdc3c7;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: #667eea;
    color: white;
    transform: translateY(-2px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #34495e;
    color: #bdc3c7;
}

/* Additional Page Styles */
.page-header {
    padding: 120px 0 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* Detailed Research Area Styles */
.detailed-research {
    padding: 4rem 0;
}

.research-area {
    margin-bottom: 4rem;
    padding: 3rem 0;
    border-bottom: 1px solid #e9ecef;
}

.research-area:last-child {
    border-bottom: none;
}

.area-content {
    max-width: 1000px;
    margin: 0 auto;
}

.area-text h2 {
    color: #333;
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.area-text h2 i {
    color: #667eea;
}

.area-description {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 2rem;
    line-height: 1.7;
}

.research-list {
    list-style: none;
    margin-bottom: 2rem;
}

.research-list li {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
    position: relative;
}

.research-list li::before {
    content: '●';
    color: #667eea;
    position: absolute;
    left: 0;
}

.applications-grid,
.facilities-grid,
.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.application-card,
.facility-item,
.partner-item {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 10px;
    border: 1px solid #e9ecef;
}

.facility-item {
    text-align: center;
}

.facility-item i {
    font-size: 2rem;
    color: #667eea;
    margin-bottom: 1rem;
}

.project-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.project-highlight {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    border: 1px solid #e9ecef;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.tech-tag {
    background: #e9ecef;
    color: #666;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.9rem;
}

/* Project Filter Styles */
.project-filters {
    padding: 2rem 0;
    background: #f8f9fa;
}

.filter-tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.filter-btn {
    background: white;
    color: #666;
    border: 2px solid #e9ecef;
    padding: 0.8rem 1.5rem;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.filter-btn:hover,
.filter-btn.active {
    background: #667eea;
    color: white;
    border-color: #667eea;
}

/* Detailed Project Card Styles */
.projects-showcase {
    padding: 4rem 0;
}

.project-card-detailed {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
    margin-bottom: 2rem;
}

.project-card-detailed:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: #f8f9fa;
    border-bottom: 1px solid #e9ecef;
}

.project-status {
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.9rem;
    font-weight: 500;
    background: #28a745;
    color: white;
}

.project-status.completed {
    background: #6c757d;
}

.project-status.planning {
    background: #ffc107;
    color: #333;
}

.project-category {
    background: #667eea;
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.9rem;
}

.project-summary {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.project-details {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.detail-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #666;
    font-size: 0.9rem;
}

.detail-item i {
    color: #667eea;
}

.project-links {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.project-link-btn {
    padding: 0.6rem 1.2rem;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    background: #667eea;
    color: white;
    border: 2px solid #667eea;
}

.project-link-btn:hover {
    transform: translateY(-2px);
}

.project-link-btn.secondary {
    background: transparent;
    color: #667eea;
}

.project-link-btn.secondary:hover {
    background: #667eea;
    color: white;
}

/* Project Statistics */
.project-stats {
    padding: 4rem 0;
    background: #2c3e50;
    color: white;
    text-align: center;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.stat-item {
    padding: 2rem;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: #667eea;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1.1rem;
    color: #ecf0f1;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Collaboration Section Styles */
.collaboration-section {
    padding: 6rem 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.partner-card {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
}

.partner-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.partner-logo {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.partner-logo i {
    font-size: 2rem;
    color: white;
}

.partner-card h3 {
    color: #333;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.partner-card p {
    color: #666;
    line-height: 1.6;
}

.collaboration-description {
    background: rgba(255, 255, 255, 0.9);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.collaboration-description p {
    font-size: 1.1rem;
    line-height: 1.7;
    color: #555;
    margin: 0;
}

/* Team Page Styles */
.team-faculty {
    padding: 4rem 0;
    background: white;
}

.faculty-grid {
    display: grid;
    gap: 3rem;
}

.faculty-member {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 2rem;
    align-items: start;
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 15px;
    border: 1px solid #e9ecef;
}

.member-info h3 {
    color: #333;
    margin-bottom: 0.5rem;
}

.member-title {
    color: #667eea;
    font-weight: 600;
    margin-bottom: 0.3rem;
}

.member-department {
    color: #666;
    font-style: italic;
    margin-bottom: 1rem;
}

.member-bio {
    color: #555;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.member-expertise {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.expertise-tag {
    background: #667eea;
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.9rem;
}

.member-contact {
    display: flex;
    gap: 1rem;
}

.member-contact a {
    width: 35px;
    height: 35px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #666;
    transition: all 0.3s ease;
}

.member-contact a:hover {
    background: #667eea;
    color: white;
    transform: translateY(-2px);
}

.research-staff {
    padding: 4rem 0;
    background: #f8f9fa;
}

.staff-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.staff-member {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid #e9ecef;
}

.member-focus {
    color: #666;
    font-style: italic;
    margin-bottom: 1.5rem;
}

.graduate-students {
    padding: 4rem 0;
    background: white;
}

.student-categories {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.category h3 {
    margin-bottom: 2rem;
    color: #333;
    text-align: center;
}

.student-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.student-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 10px;
    border: 1px solid #e9ecef;
}

.student-photo {
    width: 60px;
    height: 60px;
    flex-shrink: 0;
}

.student-info h4 {
    margin-bottom: 0.3rem;
    color: #333;
}

.student-year {
    color: #667eea;
    font-weight: 600;
    font-size: 0.9rem;
}

.student-research {
    color: #555;
    margin: 0.3rem 0;
}

.student-advisor {
    color: #666;
    font-size: 0.9rem;
    font-style: italic;
}

.join-team {
    padding: 4rem 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
}

.join-content h2 {
    margin-bottom: 1rem;
    color: white;
}

.join-content p {
    font-size: 1.2rem;
    margin-bottom: 3rem;
    opacity: 0.9;
}

.opportunities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.opportunity-card {
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.opportunity-card:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-5px);
}

.opportunity-card h3 {
    margin-bottom: 1rem;
    color: white;
}

.opportunity-card h3 i {
    margin-right: 0.5rem;
}

.opportunity-card p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.opportunity-link {
    color: white;
    text-decoration: none;
    font-weight: 600;
    padding: 0.8rem 1.5rem;
    border: 2px solid white;
    border-radius: 25px;
    transition: all 0.3s ease;
    display: inline-block;
}

.opportunity-link:hover {
    background: white;
    color: #667eea;
}

/* Publications Page Styles */
.publication-stats {
    padding: 3rem 0;
    background: #f8f9fa;
}

.stats-overview {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.stat-box {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid #e9ecef;
}

.stat-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-icon i {
    font-size: 1.5rem;
    color: white;
}

.stat-info h3 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 0.3rem;
}

.stat-info p {
    color: #666;
    font-weight: 500;
}

.publication-filters {
    padding: 2rem 0;
    background: white;
    border-bottom: 1px solid #e9ecef;
}

.filter-controls {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    align-items: center;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.filter-group label {
    font-weight: 500;
    color: #333;
}

.filter-group select {
    padding: 0.8rem;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    background: white;
    font-family: inherit;
}

.search-group {
    position: relative;
}

.search-group input {
    width: 100%;
    padding: 0.8rem 1rem 0.8rem 3rem;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-family: inherit;
}

.search-group i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: #666;
}

.publications-list-section {
    padding: 4rem 0;
    background: #f8f9fa;
}

.publication-year-group {
    margin-bottom: 3rem;
}

.year-header {
    font-size: 2rem;
    color: #333;
    margin-bottom: 2rem;
    padding-bottom: 0.5rem;
    border-bottom: 3px solid #667eea;
}

.publication-item-detailed {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid #e9ecef;
    position: relative;
}

.publication-badge {
    position: absolute;
    top: -10px;
    left: 2rem;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    color: white;
}

.publication-badge.featured {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.publication-badge.award {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.publication-content h3 {
    color: #333;
    margin-bottom: 0.8rem;
    font-size: 1.3rem;
}

.authors {
    color: #666;
    font-style: italic;
    margin-bottom: 0.5rem;
}

.venue {
    color: #667eea;
    font-weight: 600;
    margin-bottom: 1rem;
}

.abstract {
    color: #555;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.publication-metrics {
    display: flex;
    gap: 2rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.metric {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #666;
    font-size: 0.9rem;
}

.metric i {
    color: #667eea;
}

.publication-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.pub-tag {
    background: #e9ecef;
    color: #666;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.9rem;
}

.publication-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.pub-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.2rem;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 2px solid #e9ecef;
    color: #666;
}

.pub-link.primary {
    background: #667eea;
    color: white;
    border-color: #667eea;
}

.pub-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.pub-link.primary:hover {
    background: #5a6fd8;
}

.load-more-section {
    text-align: center;
    margin-top: 3rem;
}

.load-more-btn {
    background: white;
    color: #667eea;
    border: 2px solid #667eea;
    padding: 1rem 2rem;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0 auto;
}

.load-more-btn:hover {
    background: #667eea;
    color: white;
}

.achievements {
    padding: 4rem 0;
    background: white;
}

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.achievement-item {
    text-align: center;
    padding: 2rem;
    background: #f8f9fa;
    border-radius: 15px;
    border: 1px solid #e9ecef;
}

.achievement-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.achievement-icon i {
    font-size: 2rem;
    color: white;
}

.achievement-item h3 {
    margin-bottom: 1rem;
    color: #333;
}

.achievement-item p {
    color: #666;
    line-height: 1.6;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .contact-form-and-map {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .contact-content {
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }

    .visual-element {
        width: 200px;
        height: 200px;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .contact-form-and-map {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .research-grid,
    .projects-grid,
    .team-grid {
        grid-template-columns: 1fr;
    }

    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 2rem;
    }

    .container {
        padding: 0 1rem;
    }

    .nav-container {
        padding: 1rem;
    }

    .faculty-member {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .student-categories {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .filter-controls {
        grid-template-columns: 1fr;
    }

    .publication-metrics {
        flex-direction: column;
        gap: 0.5rem;
    }

    .page-header h1 {
        font-size: 2rem;
    }

    .stats-overview,
    .opportunities-grid,
    .achievements-grid {
        grid-template-columns: 1fr;
    }

    .location-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .map-overlay {
        position: static;
        margin-top: 1rem;
        max-width: none;
    }

    .transport-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .btn {
        padding: 0.8rem 1.5rem;
        font-size: 1rem;
    }

    .section-header h2 {
        font-size: 1.8rem;
    }

    .research-card,
    .project-content,
    .team-member,
    .contact-form {
        padding: 1.5rem;
    }
}