/* Modern CSS Reset and Base Styles */
:root {
    --primary-color: #2D3436;
    --secondary-color: #0984E3;
    --accent-color: #00B894;
    --text-color: #2D3436;
    --light-text: #636E72;
    --background: #FFFFFF;
    --card-bg: #F5F6FA;
    --border-color: #DFE6E9;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    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: var(--text-color);
    background: var(--background);
    overflow-x: hidden;
}

/* Modern Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header Styles */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-text {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
    transition: var(--transition);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--secondary-color);
    transition: var(--transition);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
}

.nav-toggle span {
    width: 30px;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    padding: 8rem 0 4rem;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="20" height="20" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><rect width="1" height="1" fill="%230984E3" fill-opacity="0.05"/></svg>');
    opacity: 0.5;
}

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

.hero-text h1 {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    position: relative;
}

.glitch {
    position: relative;
    animation: glitch 1s linear infinite;
}

.glitch::before,
.glitch::after {
    content: attr(data-text);
    position: absolute;
    left: 0;
    text-shadow: 1px 0 blue;
    top: 0;
    color: var(--primary-color);
    background: var(--background);
    overflow: hidden;
    clip: rect(0, 900px, 0, 0);
}

.glitch::before {
    left: 2px;
    text-shadow: -1px 0 red;
    animation: noise-anim 2s infinite linear alternate-reverse;
}

.glitch::after {
    left: -2px;
    text-shadow: 2px 0 green;
    animation: noise-anim 3s infinite linear alternate-reverse;
}

@keyframes noise-anim {
    0% {
        clip: rect(44px, 450px, 56px, 0);
    }
    5% {
        clip: rect(12px, 450px, 59px, 0);
    }
    10% {
        clip: rect(48px, 450px, 29px, 0);
    }
    15% {
        clip: rect(42px, 450px, 73px, 0);
    }
    20% {
        clip: rect(63px, 450px, 27px, 0);
    }
    25% {
        clip: rect(34px, 450px, 55px, 0);
    }
    30% {
        clip: rect(86px, 450px, 73px, 0);
    }
    35% {
        clip: rect(20px, 450px, 20px, 0);
    }
    40% {
        clip: rect(26px, 450px, 60px, 0);
    }
    45% {
        clip: rect(25px, 450px, 66px, 0);
    }
    50% {
        clip: rect(57px, 450px, 98px, 0);
    }
    55% {
        clip: rect(5px, 450px, 46px, 0);
    }
    60% {
        clip: rect(82px, 450px, 31px, 0);
    }
    65% {
        clip: rect(54px, 450px, 27px, 0);
    }
    70% {
        clip: rect(28px, 450px, 99px, 0);
    }
    75% {
        clip: rect(45px, 450px, 69px, 0);
    }
    80% {
        clip: rect(23px, 450px, 85px, 0);
    }
    85% {
        clip: rect(54px, 450px, 84px, 0);
    }
    90% {
        clip: rect(45px, 450px, 47px, 0);
    }
    95% {
        clip: rect(37px, 450px, 20px, 0);
    }
    100% {
        clip: rect(4px, 450px, 91px, 0);
    }
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--secondary-color);
    margin-bottom: 1.5rem;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--light-text);
    margin-bottom: 2rem;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.btn {
    padding: 0.8rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary {
    background: var(--secondary-color);
    color: white;
}

.btn-primary:hover {
    background: #0773C5;
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: var(--secondary-color);
    border: 2px solid var(--secondary-color);
}

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

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

.social-link {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--card-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition);
}

.social-link i {
    font-size: 1.8rem;
    transition: all 0.3s ease;
}

.social-link:hover {
    background: var(--secondary-color);
    color: white;
    transform: translateY(-3px);
}

.hero-image {
    position: relative;
}

.image-wrapper {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.profile-image {
    width: 100%;
    height: auto;
    display: block;
    transition: var(--transition);
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(9, 132, 227, 0.2), rgba(0, 184, 148, 0.2));
    opacity: 0;
    transition: var(--transition);
}

.image-wrapper:hover .image-overlay {
    opacity: 1;
}

.image-wrapper:hover .profile-image {
    transform: scale(1.05);
}

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

.section-header h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.section-line {
    width: 60px;
    height: 4px;
    background: var(--secondary-color);
    margin: 0 auto;
    border-radius: 2px;
}

/* About Section */
.about {
    padding: 6rem 0;
    background: var(--background);
}

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

.about-text p {
    margin-bottom: 1.5rem;
    color: var(--text-color);
}

.about-text a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: var(--transition);
}

.about-text a:hover {
    color: #0773C5;
    text-decoration: underline;
}

.about-text ul {
    margin-left: 1.5rem;
    margin-bottom: 1.5rem;
}

.about-text li {
    margin-bottom: 0.5rem;
    position: relative;
}

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

.detail-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.detail-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--secondary-color), var(--accent-color));
    opacity: 0;
    transition: var(--transition);
}

.detail-card:hover::before {
    opacity: 1;
}

.detail-card i {
    font-size: 2rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.detail-card h3 {
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.detail-card p {
    color: var(--light-text);
}

.location-address {
    color: var(--light-text);
    font-size: 0.9rem;
    margin-top: 0.25rem;
}

.location-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--secondary-color);
    text-decoration: none;
    font-size: 0.9rem;
    margin-top: 1rem;
    transition: var(--transition);
}

.location-link:hover {
    color: var(--accent-color);
    transform: translateY(-2px);
}

.location-image {
    width: 100%;
    height: 150px;
    overflow: hidden;
    border-radius: 12px;
    margin-bottom: 1rem;
}

.lab-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.detail-card:hover .lab-image {
    transform: scale(1.05);
}

/* Education Section */
.education {
    padding: 6rem 0;
    background: var(--card-bg);
}

.education-container {
    display: grid;
    grid-template-columns: 4fr 0.2fr 1fr;
    gap: 2rem;
    align-items: start;
    max-width: 1400px;
    margin: 0 auto;
}

.timeline-container {
    position: relative;
    padding: 2rem 2rem 2rem 0;
    grid-column: 1;
}

.timeline-container::before {
    content: '';
    position: absolute;
    right: -2px;
    top: 0;
    height: 100%;
    width: 3px;
    background: var(--secondary-color);
}

.timeline-item {
    position: relative;
    padding-right: 2rem;
    margin-bottom: 3rem;
    padding-left: 0;
}

.timeline-marker {
    position: absolute;
    right: -8px;
    top: 24px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--secondary-color);
    border: 3px solid white;
    box-shadow: 0 0 0 2px var(--secondary-color);
}

.timeline-content {
    background: var(--background);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.timeline-content:hover {
    transform: translateX(-10px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
}

.timeline-content h3 {
    color: var(--primary-color);
    font-size: 1.4rem;
    margin-bottom: 0.75rem;
}

.timeline-content .institution {
    color: var(--secondary-color);
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.timeline-content .date {
    color: var(--light-text);
    font-size: 1rem;
    margin-bottom: 1.5rem;
}

.timeline-content .details-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.timeline-content .details-list li {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
    position: relative;
    line-height: 1.6;
}

.timeline-content .details-list li::before {
    content: '•';
    color: var(--secondary-color);
    position: absolute;
    left: 0;
    font-weight: bold;
}

.timeline-content .details-list .highlight {
    color: var(--primary-color);
    font-weight: 600;
}

.education-image-container {
    position: sticky;
    top: 2rem;
    grid-column: 3;
}

.education-image {
    width: 100%;
    max-width: 300px;
    height: 420px;
    overflow: hidden;
    border-radius: 12px;
    margin: 0 auto;
    box-shadow: var(--shadow);
    border: 8px solid white;
    box-shadow: 
        0 0 0 1px var(--border-color),
        var(--shadow);
}

.graduation-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
    transition: var(--transition);
}

.education-item:hover .graduation-image {
    transform: scale(1.05);
}

/* Research Section */
.research {
    padding: 6rem 0;
    background: var(--background);
}

.research-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 2rem;
}

.research-card {
    background: var(--background);
    padding: 2rem;
    border-radius: 16px;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.research-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

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

.research-header h3 {
    color: var(--primary-color);
    font-size: 1.4rem;
    font-weight: 600;
}

.research-date {
    color: var(--secondary-color);
    font-weight: 500;
    font-size: 1.1rem;
}

.research-location {
    color: var(--light-text);
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.research-areas {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.research-area {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 12px;
    transition: var(--transition);
}

.research-area:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow);
}

.research-area h4 {
    color: var(--secondary-color);
    font-size: 1.1rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.research-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.research-list li {
    margin-bottom: 0.75rem;
    padding-left: 1.5rem;
    position: relative;
    line-height: 1.5;
    color: var(--text-color);
}

.research-list li:last-child {
    margin-bottom: 0;
}

.research-list li::before {
    content: '•';
    color: var(--secondary-color);
    position: absolute;
    left: 0;
    font-weight: bold;
}

/* Skills Section */
.skills {
    padding: 6rem 0;
    background: var(--card-bg);
}

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

.skill-category {
    background: var(--background);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.skill-category:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.skill-category h3 {
    color: var(--secondary-color);
    font-size: 1.4rem;
    margin-bottom: 1.5rem;
}

.skill-items {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

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

.skill-name {
    color: var(--text-color);
    font-size: 1rem;
    flex: 1;
}

.skill-progress {
    width: 100px;
    height: 8px;
    background: var(--card-bg);
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: var(--secondary-color);
    border-radius: 4px;
    width: 0;
    transition: width 1s ease-in-out;
}

/* Publications Section */
.publications {
    padding: 6rem 0;
    background: var(--background);
}

.publications-grid {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    padding: 1rem;
}

.publication-card {
    background: var(--card-bg);
    border-radius: 8px;
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.publication-card.wide {
    width: 100%;
}

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

.publication-header {
    margin-bottom: 1.5rem;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 0.5rem;
}

.publication-header h3 {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin: 0;
}

.publication-item {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.publication-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.publication-item h4 {
    font-size: 1.2rem;
    color: var(--secondary-color);
    margin: 0 0 1rem 0;
    line-height: 1.4;
}

.publication-journal {
    color: var(--secondary-text);
    font-style: italic;
    margin: 0.5rem 0;
}

.publication-doi {
    color: var(--primary-color);
    font-size: 0.9rem;
    margin: 0.5rem 0 1rem 0;
    text-decoration: none;
    display: inline-block;
    transition: color 0.3s ease;
}

.publication-doi:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}

.publication-details {
    list-style: none;
    padding: 0;
    margin: 1rem 0 0 0;
}

.publication-details li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--secondary-text);
    line-height: 1.4;
}

.publication-details li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

/* Contact Section */
.contact {
    padding: 6rem 0;
    background: var(--card-bg);
    position: relative;
    overflow: hidden;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="20" height="20" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><rect width="1" height="1" fill="%230984E3" fill-opacity="0.05"/></svg>');
    opacity: 0.5;
}

.contact-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

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

.contact-card {
    background: var(--background);
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.contact-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--secondary-color), var(--accent-color));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.contact-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.contact-card:hover::before {
    opacity: 1;
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: var(--card-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    transition: all 0.3s ease;
}

.contact-card:hover .contact-icon {
    background: var(--secondary-color);
    transform: scale(1.1);
}

.contact-icon i {
    font-size: 1.5rem;
    color: var(--secondary-color);
    transition: all 0.3s ease;
}

.contact-card:hover .contact-icon i {
    color: white;
}

.contact-card h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
    font-size: 1.4rem;
}

.contact-card p {
    color: var(--light-text);
    margin-bottom: 1rem;
}

.contact-link {
    color: var(--secondary-color);
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
}

.contact-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--secondary-color);
    transition: width 0.3s ease;
}

.contact-link:hover {
    color: var(--accent-color);
}

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

.location-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--secondary-color);
    text-decoration: none;
    font-size: 0.9rem;
    margin-top: 0.5rem;
    transition: all 0.3s ease;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    background: var(--card-bg);
}

.location-link:hover {
    background: var(--secondary-color);
    color: white;
    transform: translateY(-2px);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1rem;
}

.social-link {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--card-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--secondary-color);
    color: white;
    transform: translateY(-3px);
}

.social-tooltip {
    position: absolute;
    bottom: -30px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 4px;
    font-size: 0.8rem;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.social-tooltip::before {
    content: '';
    position: absolute;
    top: -5px;
    left: 50%;
    transform: translateX(-50%);
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-bottom: 5px solid var(--primary-color);
}

.social-link:hover .social-tooltip {
    opacity: 1;
    visibility: visible;
    bottom: -35px;
}

.contact-hover {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--secondary-color);
    color: white;
    padding: 0.8rem;
    transform: translateY(100%);
    transition: transform 0.3s ease;
    font-size: 0.9rem;
    font-weight: 500;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.contact-card:hover .contact-hover {
    transform: translateY(0);
}

@media (max-width: 768px) {
    .contact-info {
        grid-template-columns: 1fr;
    }

    .contact-card {
        padding: 1.5rem;
    }

    .contact-icon {
        width: 50px;
        height: 50px;
    }

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

    .social-link {
        width: 35px;
        height: 35px;
    }
}

/* Footer */
.footer {
    background: var(--primary-color);
    color: white;
    padding: 3rem 0 2rem;
    text-align: center;
}

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

.footer-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
    width: 100%;
    max-width: 600px;
}

.footer .contact-card {
    background: rgba(255, 255, 255, 0.05);
    padding: 2.5rem;
    border-radius: 16px;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    width: 100%;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.footer .contact-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.footer .contact-icon {
    width: 70px;
    height: 70px;
    background: var(--secondary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    transition: all 0.3s ease;
}

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

.footer .contact-card h3 {
    color: white;
    font-size: 1.8rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.footer .contact-card p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.1rem;
    margin-bottom: 2rem;
    line-height: 1.6;
}

.footer-contact {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    width: 100%;
    margin-bottom: 2rem;
}

.footer-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: all 0.3s ease;
    padding: 1rem 1.5rem;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-link:hover {
    background: var(--secondary-color);
    color: white;
    transform: translateY(-2px);
}

.footer-link i {
    font-size: 1.3rem;
    color: var(--secondary-color);
    transition: all 0.3s ease;
}

.footer-link:hover i {
    color: white;
}

.footer .social-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 0.5rem;
}

.footer .social-link {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.footer .social-link:hover {
    background: var(--secondary-color);
    color: white;
    transform: translateY(-3px);
}

.footer .social-link i {
    font-size: 1.3rem;
    transition: all 0.3s ease;
}

@media (max-width: 768px) {
    .footer .contact-card {
        padding: 2rem;
    }

    .footer .contact-icon {
        width: 60px;
        height: 60px;
    }

    .footer .contact-icon i {
        font-size: 1.5rem;
    }

    .footer .contact-card h3 {
        font-size: 1.5rem;
    }

    .footer .contact-card p {
        font-size: 1rem;
    }

    .footer-link {
        padding: 0.8rem 1.2rem;
    }

    .footer .social-link {
        width: 40px;
        height: 40px;
    }

    .footer .social-link i {
        font-size: 1.1rem;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

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

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--background);
        padding: 1rem;
        flex-direction: column;
        text-align: center;
        box-shadow: var(--shadow);
    }

    .nav-links.active {
        display: flex;
    }

    .nav-toggle {
        display: flex;
    }

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

    .timeline::before {
        left: 20px;
    }

    .timeline-item {
        width: 100%;
        padding-left: 50px;
        padding-right: 0;
        margin-left: 0;
    }

    .timeline-item:nth-child(even) {
        margin-left: 0;
        padding-left: 50px;
    }

    .timeline-content::before {
        left: -10px !important;
        right: auto !important;
    }

    .publication-card {
        padding: 1.5rem;
    }

    .publication-item h4 {
        font-size: 1.1rem;
    }

    .publication-details li {
        font-size: 0.9rem;
    }

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

    .skill-category {
        padding: 1.5rem;
    }

    .skill-category h3 {
        font-size: 1.2rem;
    }

    .skill-progress {
        width: 80px;
    }

    .skill-name {
        font-size: 0.9rem;
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content,
.about-content,
.timeline-item,
.research-card,
.skill-category,
.publication-card,
.contact-card {
    animation: fadeIn 0.6s ease-out forwards;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--card-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--secondary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #0773C5;
}