/* 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;
    transition: all 0.3s ease;
}

/* Dark Mode Styles */
body.dark-mode {
    background-color: #0a0a0a;
    color: #e8e8e8;
}

body.dark-mode .navbar {
    background: #000000 !important;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.8) !important;
    border-bottom: 1px solid #555 !important;
    -webkit-backdrop-filter: none !important;
    backdrop-filter: none !important;
}

body.dark-mode .nav-logo a {
    color: #ffffff !important;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.8), 0 0 8px rgba(255, 255, 255, 0.3);
    font-weight: 700;
    letter-spacing: 0.5px;
}

body.dark-mode .nav-menu a {
    color: #ffffff;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

body.dark-mode .nav-menu a:hover {
    color: #667eea;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

body.dark-mode .hamburger span {
    background: #ffffff;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

body.dark-mode .theme-toggle {
    border-color: #667eea;
    color: #667eea;
}

body.dark-mode .theme-toggle:hover {
    background: #667eea;
    color: #0a0a0a;
}

/* Hero Section Dark Mode */
body.dark-mode .hero {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
}

body.dark-mode .hero-title {
    color: #e8e8e8;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

body.dark-mode .hero-subtitle {
    color: #667eea;
}

body.dark-mode .hero-description {
    color: #b8b8b8;
}

body.dark-mode .hero-description strong {
    color: #e8e8e8;
}

body.dark-mode .hero-location .location-info {
    background: rgba(102, 126, 234, 0.15);
    border-color: rgba(102, 126, 234, 0.3);
}

body.dark-mode .hero-location .location-info:hover {
    background: rgba(102, 126, 234, 0.2);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

body.dark-mode .hero-location .location-info i {
    color: #667eea;
}

body.dark-mode .hero-location .location-info span {
    color: #e8e8e8;
}

/* Section Titles */
body.dark-mode .section-title {
    color: #e8e8e8;
}

body.dark-mode .section-subtitle {
    color: #b8b8b8;
}

/* About Section */
body.dark-mode .about {
    background: #0f0f0f;
}

body.dark-mode .about-text p {
    color: #b8b8b8;
}

body.dark-mode .about-text strong {
    color: #e8e8e8;
}

body.dark-mode .detail-item {
    background: #1a1a1a;
    border-left-color: #667eea;
}

body.dark-mode .detail-item h4 {
    color: #e8e8e8;
}

body.dark-mode .detail-item p {
    color: #b8b8b8;
}

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

/* Research Section */
body.dark-mode .research {
    background: #0a0a0a;
}

body.dark-mode .research-card {
    background: #1a1a1a;
    border-color: #333;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

body.dark-mode .research-card:hover {
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
}

body.dark-mode .research-card h3 {
    color: #e8e8e8;
}

body.dark-mode .research-card p {
    color: #b8b8b8;
}

/* Publications Section */
body.dark-mode .publications {
    background: #0f0f0f;
}

body.dark-mode .publication-item {
    background: #1a1a1a;
    border-left-color: #667eea;
}

body.dark-mode .publication-content h3 {
    color: #e8e8e8;
}

body.dark-mode .publication-authors {
    color: #667eea;
}

body.dark-mode .publication-venue {
    color: #b8b8b8;
}

body.dark-mode .publication-description {
    color: #b8b8b8;
}

body.dark-mode .publication-year {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #0a0a0a;
}

/* Projects Section */
body.dark-mode .projects {
    background: #0a0a0a;
}

body.dark-mode .project-card {
    background: #1a1a1a;
    border-color: #333;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

body.dark-mode .project-card:hover {
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
}

body.dark-mode .project-header h3 {
    color: #e8e8e8;
}

body.dark-mode .project-description {
    color: #b8b8b8;
}

body.dark-mode .project-year {
    background: #667eea;
    color: #0a0a0a;
}

body.dark-mode .tech-tag {
    background: #2a2a2a;
    color: #667eea;
}

body.dark-mode .project-link {
    color: #667eea;
}

body.dark-mode .project-link:hover {
    color: #764ba2;
}

/* Educational Section */
body.dark-mode .educational {
    background: #0f0f0f;
}

body.dark-mode .educational-card {
    background: #1a1a1a;
    border-color: #333;
    border-left-color: #28a745;
}

body.dark-mode .educational-card:hover {
    background: #1f1f1f;
}

body.dark-mode .educational-header h3 {
    color: #e8e8e8;
}

body.dark-mode .educational-description {
    color: #b8b8b8;
}

body.dark-mode .educational-type {
    background: #28a745;
    color: #0a0a0a;
}

body.dark-mode .topic-tag {
    background: #1a3d1a;
    color: #28a745;
}

body.dark-mode .educational-link {
    color: #28a745;
}

body.dark-mode .educational-link:hover {
    color: #1e7e34;
}

/* Media Section */
body.dark-mode .media {
    background: #0a0a0a;
}

body.dark-mode .media-category h3 {
    color: #e8e8e8;
    border-bottom-color: #667eea;
}

body.dark-mode .media-item {
    background: #1a1a1a;
    border-left-color: #667eea;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

body.dark-mode .media-item:hover {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.5);
}

body.dark-mode .media-content h4 {
    color: #e8e8e8;
}

body.dark-mode .media-source {
    color: #667eea;
}

body.dark-mode .media-description {
    color: #b8b8b8;
}

body.dark-mode .media-link {
    color: #667eea;
}

body.dark-mode .media-link:hover {
    color: #764ba2;
}

/* Location Section */
body.dark-mode .location {
    background: #0f0f0f;
}

body.dark-mode .location-info h3 {
    color: #e8e8e8;
}

body.dark-mode .location-address {
    color: #667eea;
}

body.dark-mode .location-description {
    color: #b8b8b8;
}

body.dark-mode .location-details .detail-item {
    background: #1a1a1a;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

body.dark-mode .location-details .detail-item:hover {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.5);
}

body.dark-mode .location-details .detail-item i {
    color: #667eea;
}

/* Contact Section */
body.dark-mode .contact {
    background: #0f0f0f;
}

body.dark-mode .contact-item {
    background: #1a1a1a;
    border-left-color: #667eea;
}

body.dark-mode .contact-item h4 {
    color: #e8e8e8;
}

body.dark-mode .contact-item p {
    color: #b8b8b8;
}

body.dark-mode .contact-item a {
    color: #667eea;
}

body.dark-mode .contact-item a:hover {
    color: #764ba2;
}

body.dark-mode .contact-item i {
    color: #667eea;
}

body.dark-mode .social-link {
    background: #1a1a1a;
    color: #e8e8e8;
    border-color: #333;
}

body.dark-mode .social-link:hover {
    background: #667eea;
    color: #0a0a0a;
}

/* Footer */
body.dark-mode .footer {
    background: #0a0a0a;
    color: #b8b8b8;
    border-top: 1px solid #333;
}

body.dark-mode .visitor-counter {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.1);
}

body.dark-mode .visitor-counter:hover {
    background: rgba(255, 255, 255, 0.1);
}

body.dark-mode .visitor-counter i {
    color: #667eea;
}

body.dark-mode #visitor-count {
    color: #667eea;
}

/* Buttons */
body.dark-mode .btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #0a0a0a;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

body.dark-mode .btn-primary:hover {
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.5);
}

body.dark-mode .btn-secondary {
    background: transparent;
    color: #667eea;
    border-color: #667eea;
}

body.dark-mode .btn-secondary:hover {
    background: #667eea;
    color: #0a0a0a;
}

/* Scroll Progress */
body.dark-mode .scroll-progress {
    background: rgba(0, 0, 0, 0.5);
}

body.dark-mode .scroll-progress-bar {
    background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%);
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.8);
}

/* Scroll to Top Button */
body.dark-mode .scroll-to-top {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #0a0a0a;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

body.dark-mode .scroll-to-top:hover {
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
}

/* Scroll Progress Bar */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: rgba(102, 126, 234, 0.1);
    z-index: 9999;
}

.scroll-progress-bar {
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    width: 0%;
    transition: width 0.1s ease;
}

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

/* Typography */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    color: #1a1a1a;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 2px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    transition: all 0.3s ease;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo a {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1a1a1a;
    text-decoration: none;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-menu a {
    text-decoration: none;
    color: #1a1a1a;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

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

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

.nav-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.theme-toggle {
    background: none;
    border: 2px solid #667eea;
    color: #667eea;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    font-size: 1rem;
}

.theme-toggle:hover {
    background: #667eea;
    color: white;
    transform: scale(1.1);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: #1a1a1a;
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

/* Animated Background */
.animated-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(-45deg, #667eea, #764ba2, #f093fb, #f5576c, #4facfe, #00f2fe);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
    opacity: 0.1;
    z-index: 1;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* Floating Particles */
.floating-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}

.particle {
    position: absolute;
    background: rgba(102, 126, 234, 0.1);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

.particle:nth-child(1) { width: 10px; height: 10px; left: 10%; animation-delay: 0s; }
.particle:nth-child(2) { width: 15px; height: 15px; left: 20%; animation-delay: 2s; }
.particle:nth-child(3) { width: 8px; height: 8px; left: 30%; animation-delay: 4s; }
.particle:nth-child(4) { width: 12px; height: 12px; left: 40%; animation-delay: 1s; }
.particle:nth-child(5) { width: 6px; height: 6px; left: 50%; animation-delay: 3s; }
.particle:nth-child(6) { width: 14px; height: 14px; left: 60%; animation-delay: 5s; }
.particle:nth-child(7) { width: 9px; height: 9px; left: 70%; animation-delay: 2.5s; }
.particle:nth-child(8) { width: 11px; height: 11px; left: 80%; animation-delay: 4.5s; }
.particle:nth-child(9) { width: 7px; height: 7px; left: 90%; animation-delay: 1.5s; }

@keyframes float {
    0%, 100% { transform: translateY(100vh) rotate(0deg); opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    50% { transform: translateY(-20vh) rotate(180deg); }
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-location {
    margin: 1.5rem 0;
}

.hero-location .location-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    background: rgba(102, 126, 234, 0.1);
    border-radius: 12px;
    border: 1px solid rgba(102, 126, 234, 0.2);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.hero-location .location-info:hover {
    background: rgba(102, 126, 234, 0.15);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.2);
}

.hero-location .location-info i {
    color: #667eea;
    font-size: 1.1rem;
}

.hero-location .location-info span {
    color: #333;
    font-weight: 500;
    font-size: 0.95rem;
}

.hero-image {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    align-items: center;
}

.hero-map {
    width: 100%;
    max-width: 400px;
}

.hero-map .map-container {
    height: 250px;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
}

.hero-map .map-container:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 1rem;
    line-height: 1.2;
    position: relative;
    z-index: 3;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: titleGlow 3s ease-in-out infinite alternate;
}

@keyframes titleGlow {
    0% { filter: drop-shadow(0 0 5px rgba(102, 126, 234, 0.3)); }
    100% { filter: drop-shadow(0 0 20px rgba(102, 126, 234, 0.6)); }
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 600;
    color: #667eea;
    margin-bottom: 1.5rem;
}

.hero-description {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 2rem;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
}

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

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

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    z-index: 3;
}

.avatar-container {
    position: relative;
    display: inline-block;
}

.hero-avatar {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: 0 20px 40px rgba(102, 126, 234, 0.3);
    border: 4px solid white;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    z-index: 2;
}

.hero-avatar:hover {
    transform: scale(1.05);
    box-shadow: 0 25px 50px rgba(102, 126, 234, 0.4);
}

.avatar-glow {
    position: absolute;
    top: -20px;
    left: -20px;
    right: -20px;
    bottom: -20px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea, #764ba2, #f093fb, #f5576c);
    background-size: 400% 400%;
    animation: gradientShift 3s ease infinite;
    opacity: 0.3;
    z-index: 1;
    filter: blur(20px);
}

/* About Section */
.about {
    padding: 80px 0;
    background: #ffffff;
}

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

.about-text p {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

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

.detail-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 12px;
    border-left: 4px solid #667eea;
}

.detail-item i {
    font-size: 1.5rem;
    color: #667eea;
    margin-top: 0.25rem;
}

.detail-item h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 0.5rem;
}

.detail-item p {
    color: #666;
    font-size: 0.95rem;
    line-height: 1.5;
}

/* Research Section */
.research {
    padding: 80px 0;
    background: #f8f9fa;
}

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

.research-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 4px 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 8px 30px rgba(0, 0, 0, 0.15);
}

.research-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

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

.research-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 1rem;
}

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

/* Publications Section */
.publications {
    padding: 80px 0;
    background: #ffffff;
}

.publication-item {
    display: flex;
    gap: 2rem;
    padding: 2rem;
    background: #f8f9fa;
    border-radius: 12px;
    margin-bottom: 2rem;
    border-left: 4px solid #667eea;
}

.publication-year {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-weight: 600;
    height: fit-content;
    min-width: 80px;
    text-align: center;
}

.publication-content h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.publication-authors {
    color: #667eea;
    font-weight: 500;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.publication-venue {
    color: #666;
    font-style: italic;
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.publication-description {
    color: #666;
    line-height: 1.6;
}

/* Projects Section */
.projects {
    padding: 80px 0;
    background: #f8f9fa;
}

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

.project-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 4px 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 8px 30px rgba(0, 0, 0, 0.15);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.project-header h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #1a1a1a;
}

.project-year {
    background: #667eea;
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

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

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.tech-tag {
    background: #f0f2f5;
    color: #667eea;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

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

/* Educational Resources Section */
.educational {
    padding: 80px 0;
    background: #ffffff;
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

.educational-card {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid #e9ecef;
    transition: all 0.3s ease;
    border-left: 4px solid #28a745;
}

.educational-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    background: white;
}

.educational-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.educational-header h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #1a1a1a;
}

.educational-type {
    background: #28a745;
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

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

.educational-topics {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.topic-tag {
    background: #e8f5e8;
    color: #28a745;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.educational-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: #28a745;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.educational-link:hover {
    color: #1e7e34;
}

/* Media Coverage Section */
.media {
    padding: 80px 0;
    background: #f8f9fa;
}

.media-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 3rem;
}

.media-category h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 2rem;
    padding-bottom: 0.5rem;
    border-bottom: 3px solid #667eea;
    display: inline-block;
}

.media-items {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.media-item {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border-left: 4px solid #667eea;
}

.media-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.media-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.media-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

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

.media-content {
    flex: 1;
}

.media-content h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.media-source {
    color: #667eea;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.media-description {
    color: #666;
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: 1rem;
}

.media-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

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

/* Location Map Section */
.location {
    padding: 80px 0;
    background: #f8f9fa;
}

.location-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.location-info h3 {
    font-size: 1.8rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 1rem;
}

.location-address {
    font-size: 1.2rem;
    color: #667eea;
    font-weight: 600;
    margin-bottom: 1rem;
}

.location-description {
    color: #666;
    line-height: 1.6;
    margin-bottom: 2rem;
}

.location-details {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.location-details .detail-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.location-details .detail-item:hover {
    transform: translateY(-3px);
}

.location-details .detail-item i {
    font-size: 1.2rem;
    color: #667eea;
    width: 20px;
}

.map-container {
    height: 400px;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

#map {
    width: 100%;
    height: 100%;
    border-radius: 16px;
}

/* Contact Section */
.contact {
    padding: 80px 0;
    background: #ffffff;
}

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

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 12px;
    border-left: 4px solid #667eea;
}

.contact-item i {
    font-size: 1.5rem;
    color: #667eea;
    margin-top: 0.25rem;
}

.contact-item h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 0.5rem;
}

.contact-item p {
    color: #666;
    margin-bottom: 0.25rem;
}

.contact-item a {
    color: #667eea;
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-item a:hover {
    color: #764ba2;
}

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

.social-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    background: #f8f9fa;
    border-radius: 12px;
    text-decoration: none;
    color: #1a1a1a;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.social-link:hover {
    background: #667eea;
    color: white;
    transform: translateX(5px);
}

.social-link i {
    font-size: 1.2rem;
}

/* Footer */
.footer {
    background: #1a1a1a;
    color: white;
    text-align: center;
    padding: 2rem 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.visitor-counter {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.1);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.visitor-counter:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

.visitor-counter i {
    color: #667eea;
    font-size: 1rem;
}

#visitor-count {
    font-weight: 600;
    color: #667eea;
}

/* Responsive Design */
@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-image {
        flex-direction: column;
        gap: 1.5rem;
    }

    .hero-map {
        max-width: 100%;
    }

    .hero-map .map-container {
        height: 200px;
    }

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

    .hero-subtitle {
        font-size: 1.2rem;
    }

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

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

    .publication-item {
        flex-direction: column;
        gap: 1rem;
    }

    .publication-year {
        align-self: flex-start;
    }

    .section-title {
        font-size: 2rem;
    }

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

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .visitor-counter {
        margin-top: 1rem;
    }

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

    .map-container {
        height: 300px;
    }

    .nav-controls {
        gap: 0.5rem;
    }

    .theme-toggle {
        width: 35px;
        height: 35px;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

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

    .publications-tabs {
        flex-direction: column;
        align-items: center;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Smooth scrolling for anchor links */
html {
    scroll-padding-top: 80px;
}

/* Reveal Animations */
section, .research-card, .project-card, .educational-card, .media-item {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

section.reveal, .research-card.reveal, .project-card.reveal, .educational-card.reveal, .media-item.reveal {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered animation for cards */
.research-card:nth-child(1) { transition-delay: 0.1s; }
.research-card:nth-child(2) { transition-delay: 0.2s; }
.research-card:nth-child(3) { transition-delay: 0.3s; }
.research-card:nth-child(4) { transition-delay: 0.4s; }

.project-card:nth-child(1) { transition-delay: 0.1s; }
.project-card:nth-child(2) { transition-delay: 0.2s; }
.project-card:nth-child(3) { transition-delay: 0.3s; }
.project-card:nth-child(4) { transition-delay: 0.4s; }
.project-card:nth-child(5) { transition-delay: 0.5s; }
.project-card:nth-child(6) { transition-delay: 0.6s; }
.project-card:nth-child(7) { transition-delay: 0.7s; }
.project-card:nth-child(8) { transition-delay: 0.8s; }