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

/* Scroll offset for fixed header */
html {
    scroll-padding-top: 100px; /* Adjust this value based on your header height */
    scroll-behavior: smooth; /* Smooth scrolling for anchor links */
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

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

.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: #2d3748;
    text-decoration: none;
    transition: color 0.3s ease;
}

.nav-logo a:hover {
    color: #4a90e2;
}

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

.nav-link {
    color: #4a5568;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #4a90e2;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: #4a90e2;
    transition: width 0.3s ease;
}

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

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

.bar {
    width: 25px;
    height: 3px;
    background-color: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding-top: 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.4) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.4) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(120, 219, 255, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 90% 90%, rgba(255, 182, 193, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 10% 10%, rgba(173, 216, 230, 0.2) 0%, transparent 50%);
    pointer-events: none;
    animation: backgroundShift 20s ease-in-out infinite;
}

@keyframes backgroundShift {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.1);
    }
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>'),
        radial-gradient(circle at 50% 50%, transparent 0%, rgba(0, 0, 0, 0.1) 100%);
    opacity: 0.4;
    pointer-events: none;
    animation: textureMove 15s ease-in-out infinite;
}

@keyframes textureMove {
    0%, 100% {
        transform: translateX(0) translateY(0);
    }
    50% {
        transform: translateX(-10px) translateY(-5px);
    }
}

/* Floating Shapes */
.floating-shapes {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
    z-index: 1;
}

.shape {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    animation: float 6s ease-in-out infinite;
}

.shape-1 {
    width: 80px;
    height: 80px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
    background: linear-gradient(45deg, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0.05));
}

.shape-2 {
    width: 120px;
    height: 120px;
    top: 60%;
    right: 15%;
    animation-delay: 2s;
    background: linear-gradient(45deg, rgba(255, 182, 193, 0.3), rgba(255, 182, 193, 0.1));
}

.shape-3 {
    width: 60px;
    height: 60px;
    top: 40%;
    right: 30%;
    animation-delay: 4s;
    background: linear-gradient(45deg, rgba(173, 216, 230, 0.3), rgba(173, 216, 230, 0.1));
}

.shape-4 {
    width: 100px;
    height: 100px;
    bottom: 20%;
    left: 20%;
    animation-delay: 1s;
    background: linear-gradient(45deg, rgba(255, 255, 255, 0.15), rgba(255, 255, 255, 0.05));
}

.shape-5 {
    width: 40px;
    height: 40px;
    top: 80%;
    left: 60%;
    animation-delay: 3s;
    background: linear-gradient(45deg, rgba(255, 119, 198, 0.3), rgba(255, 119, 198, 0.1));
    border-radius: 25%;
}

.shape-6 {
    width: 90px;
    height: 90px;
    top: 10%;
    right: 5%;
    animation-delay: 5s;
    background: linear-gradient(45deg, rgba(120, 219, 255, 0.3), rgba(120, 219, 255, 0.1));
    border-radius: 30%;
}

.shape-7 {
    width: 70px;
    height: 70px;
    bottom: 40%;
    right: 40%;
    animation-delay: 1.5s;
    background: linear-gradient(45deg, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0.05));
    border-radius: 20%;
}

.shape-8 {
    width: 50px;
    height: 50px;
    top: 70%;
    left: 40%;
    animation-delay: 3.5s;
    background: linear-gradient(45deg, rgba(173, 216, 230, 0.4), rgba(173, 216, 230, 0.1));
    border-radius: 40%;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg) scale(1);
        opacity: 0.7;
    }
    50% {
        transform: translateY(-30px) rotate(180deg) scale(1.1);
        opacity: 1;
    }
}

.grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: 1;
    animation: gridMove 25s linear infinite;
}

@keyframes gridMove {
    0% {
        transform: translateX(0) translateY(0);
    }
    100% {
        transform: translateX(50px) translateY(25px);
    }
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 1rem;
    opacity: 0.9;
}

.hero-description {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.8;
    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: #4a90e2;
    color: white;
}

.btn-primary:hover {
    background: #357abd;
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: #4a90e2;
    transform: translateY(-2px);
}

.btn-outline {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.btn-outline::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.btn-outline:hover::before {
    left: 100%;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.profile-image {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid rgba(255, 255, 255, 0.3);
    box-shadow:
        0 20px 40px rgba(0, 0, 0, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(20px);
}

.profile-placeholder {
    width: 300px;
    height: 300px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    border: 3px solid rgba(255, 255, 255, 0.3);
    box-shadow:
        0 20px 40px rgba(0, 0, 0, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
}

.profile-placeholder::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: conic-gradient(from 0deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    animation: rotate 8s linear infinite;
}

.profile-placeholder i {
    position: relative;
    z-index: 2;
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* Section Styles */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    color: #2d3748;
}

/* About Section */
.about {
    padding: 5rem 0;
    background: #f7fafc;
}

/* Work Experience Section */
.experience {
    padding: 5rem 0;
    background: white;
}

/* Honors & Media Section */
.honors-media {
    padding: 5rem 0;
    background: #f7fafc;
}

.honors-media-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.honor-item {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.honor-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

.honor-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.honor-content h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 0.5rem;
}

.honor-content p {
    color: #4a5568;
    font-size: 0.95rem;
    margin-bottom: 0.8rem;
}

.honor-link {
    color: #4a90e2;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: color 0.3s ease;
}

.honor-link:hover {
    color: #357abd;
}

.media-item {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.media-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

.media-logo {
    width: 120px;
    height: 60px;
    border-radius: 8px;
    overflow: hidden;
    background: #f7fafc;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid #e2e8f0;
}

.media-logo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.media-content h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 0.5rem;
}

.media-content p {
    color: #4a5568;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.media-date {
    color: #718096;
    font-size: 0.8rem;
    font-weight: 500;
    margin-bottom: 0.8rem;
}

.media-link {
    color: #4a90e2;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: color 0.3s ease;
}

.media-link:hover {
    color: #357abd;
}

@media (max-width: 768px) {
    .honors-media-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .honor-item {
        padding: 1.2rem;
    }

    .media-item {
        padding: 1.2rem;
    }
}

.experience-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.experience-item {
    background: #f7fafc;
    padding: 2.5rem;
    border-radius: 16px;
    border: 1px solid #e2e8f0;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    gap: 2rem;
    align-items: flex-start;
}

.experience-logo {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    border-radius: 12px;
    overflow: hidden;
    background: white;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.experience-logo:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.experience-logo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 8px;
}

/* Specific styling for Amazon logo to make it smaller */
.experience-logo img[src*="Amazon-Logo"] {
    width: 70%;
    height: 70%;
    object-fit: contain;
}

.experience-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.experience-company {
    flex-shrink: 0;
    width: 200px;
}

.experience-company h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #2d3748;
    margin-bottom: 0.5rem;
}

.experience-period {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    display: inline-block;
}

.experience-content {
    flex: 1;
}

.experience-content h4 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 1rem;
}

.experience-content p {
    color: #4a5568;
    line-height: 1.7;
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
}

.experience-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: #4a90e2;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    margin-top: 0.5rem;
}

.experience-link:hover {
    color: #2d5a8b;
    transform: translateX(5px);
}

.experience-link i {
    font-size: 0.85rem;
}

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

.experience-tag {
    background: #4a90e2;
    color: white;
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: transform 0.2s ease;
}

.experience-tag:hover {
    transform: translateY(-2px);
}

@media (max-width: 768px) {
    .experience-item {
        flex-direction: column;
        gap: 1.5rem;
        align-items: center;
        text-align: center;
    }

    .experience-logo {
        width: 60px;
        height: 60px;
    }

    .experience-company {
        width: 100%;
    }

    .experience-content h4 {
        font-size: 1.2rem;
    }
}

.about-content {
    display: block;
    max-width: 800px;
    margin: 0 auto;
}

.about-text p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    color: #4a5568;
    line-height: 1.7;
}

.about-text a {
    color: #4a90e2;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border-bottom: 2px solid transparent;
    padding-bottom: 1px;
}

.about-text a:hover {
    color: #357abd;
    border-bottom-color: #357abd;
    transform: translateY(-1px);
}

.education {
    margin-top: 2rem;
}

.education h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #2d3748;
}

.education-item {
    margin-bottom: 1rem;
    padding: 1rem;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.education-logo {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    border-radius: 8px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f7fafc;
    border: 1px solid #e2e8f0;
}

.education-logo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.education-logo-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #4a90e2;
    color: white;
    font-size: 1.5rem;
}

.education-content {
    flex: 1;
}

.education-content h4 {
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 0.5rem;
}

.education-content p {
    color: #718096;
    margin: 0;
    margin-bottom: 0.5rem;
}

.education-period {
    color: #4a90e2;
    font-weight: 500;
    display: block;
    margin-top: 0.25rem;
}

.skills h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #2d3748;
}

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

.skill-tag {
    background: #4a90e2;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

/* Research Section */
.research {
    padding: 5rem 0;
    background: white;
}

.research-grid {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.research-item {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #e2e8f0;
}

.research-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

.research-item:nth-child(even) {
    flex-direction: row-reverse;
}

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

.research-logo {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    border-radius: 8px;
    overflow: hidden;
    background: white;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.research-logo:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.research-logo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 8px;
}

/* Specific styling for Amazon logo to make it smaller */
.research-logo img[src*="Amazon-Logo"] {
    width: 70%;
    height: 70%;
    object-fit: contain;
}

.research-image-container {
    flex: 1;
    min-height: 300px;
    position: relative;
    overflow: hidden;
}

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

.research-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.research-item:hover .research-image img {
    transform: scale(1.05);
}

.research-content {
    flex: 1;
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.research-content h3 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    color: #2d3748;
    font-weight: 600;
}

.research-year {
    background: #4a90e2;
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-weight: 600;
    font-size: 0.9rem;
    display: inline-block;
    margin-bottom: 1rem;
    width: fit-content;
}

.research-content p {
    color: #4a5568;
    line-height: 1.7;
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
}

.research-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: auto;
}

.research-tag {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: transform 0.2s ease;
}

.research-tag:hover {
    transform: translateY(-2px);
}

.research-links {
    margin-top: 1rem;
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.research-link {
    color: #4a90e2;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.research-link:hover {
    color: #357abd;
}

/* Responsive layout for research items */
@media (min-width: 768px) {
    .research-item {
        display: flex;
        align-items: stretch;
        gap: 2rem;
    }

    .research-item:nth-child(even) {
        flex-direction: row-reverse;
    }

    .research-header {
        margin-bottom: 1.5rem;
    }

    .research-logo {
        width: 70px;
        height: 70px;
    }
}

@media (max-width: 767px) {
    .research-item {
        flex-direction: column;
    }

    .research-item:nth-child(even) {
        flex-direction: column;
    }

    .research-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .research-logo {
        align-self: flex-start;
    }

    .research-image-container {
        min-height: 200px;
    }

    .research-content {
        padding: 2rem;
    }

    .research-content h3 {
        font-size: 1.5rem;
    }
}

/* Publications Section */
.publications {
    padding: 5rem 0;
    background: #f7fafc;
}

.publications-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.publication-item {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    display: flex;
    gap: 2rem;
    align-items: flex-start;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.publication-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.publication-year {
    background: #4a90e2;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 600;
    min-width: 80px;
    text-align: center;
}

.publication-content h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: #2d3748;
}

.publication-authors {
    color: #718096;
    margin-bottom: 0.5rem;
    font-style: italic;
}

.publication-venue {
    color: #4a5568;
    margin-bottom: 1rem;
    font-weight: 500;
}

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

.publication-link {
    color: #4a90e2;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.publication-link:hover {
    color: #357abd;
}

/* Contact Section */
.contact {
    padding: 5rem 0;
    background: white;
}

.contact-content {
    display: flex;
    justify-content: center;
    align-items: center;
}

.contact-info {
    display: flex;
    flex-direction: row;
    gap: 2rem;
    justify-content: center;
    align-items: center;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: #f7fafc;
    border-radius: 8px;
    transition: background 0.3s ease;
}

.contact-item:hover {
    background: #edf2f7;
}

.contact-item i {
    font-size: 1.2rem;
    color: #4a90e2;
    width: 20px;
}

.contact-item span {
    color: #4a5568;
    font-weight: 500;
}

.contact-item a {
    color: #4a5568;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    background: rgba(74, 144, 226, 0.1);
    border: 1px solid rgba(74, 144, 226, 0.2);
}

.contact-item a:hover {
    color: #4a90e2;
    background: rgba(74, 144, 226, 0.15);
    border-color: rgba(74, 144, 226, 0.3);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(74, 144, 226, 0.2);
}



/* Footer */
.footer {
    background: #2d3748;
    color: white;
    text-align: center;
    padding: 2rem 0;
}

/* 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-title {
        font-size: 2.5rem;
    }

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

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

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

    .contact-info {
        flex-direction: column;
        gap: 1.5rem;
    }

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

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

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

    .education-item {
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
    }

    .education-logo {
        width: 50px;
        height: 50px;
    }

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

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

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

    .profile-placeholder {
        width: 200px;
        height: 200px;
        font-size: 3rem;
    }

    .container {
        padding: 0 15px;
    }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Animation Classes */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}