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

html {
    scroll-behavior: smooth;
}

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

/* Keep content centered and limited */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(15, 23, 42, 0.98);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

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

.nav-logo a {
    font-size: 1.8rem;
    font-weight: 700;
    color: #3b82f6;
    text-decoration: none;
    transition: color 0.3s ease;
}

.nav-logo a:hover {
    color: #60a5fa;
}

.nav-menu {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    color: #e2e8f0;
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
    position: relative;
}

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

.nav-link:hover {
    color: #3b82f6;
    background: rgba(59, 130, 246, 0.1);
    transform: translateY(-2px);
}

.nav-link.active {
    color: #3b82f6;
    background: rgba(59, 130, 246, 0.2);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 0.25rem;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: #e2e8f0;
    transition: all 0.3s ease;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 6rem 2rem 2rem;
}

.hero::before {
    content: '';
    position: absolute;
    width: 200%;
    height: 200%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23334155" stroke-width="0.5" opacity="0.3"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    top: -50%;
    left: -50%;
    animation: float 20s infinite linear;
}

@keyframes float {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

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

.hero-text {
    animation: slideInLeft 1s ease-out;
}

.hero-name {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    margin-bottom: 1rem;
    color: #f8fafc;
}

.typing-text {
    position: relative;
}

.typing-text::after {
    content: '|';
    color: #3b82f6;
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.hero-tagline {
    font-size: 1.5rem;
    color: #3b82f6;
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.hero-description {
    font-size: 1.1rem;
    color: #cbd5e1;
    margin-bottom: 2.5rem;
    line-height: 1.7;
}

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

.btn {
    padding: 0.875rem 2rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-size: 1rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(59, 130, 246, 0.4);
}

.btn-secondary {
    background: transparent;
    color: #3b82f6;
    border: 2px solid #3b82f6;
}

.btn-secondary:hover {
    background: #3b82f6;
    color: white;
    transform: translateY(-2px);
}

.hero-image {
    display: flex;
    justify-content: center;
    animation: slideInRight 1s ease-out;
}

.profile-card {
    position: relative;
    width: 300px;
    height: 300px;
    background: rgba(59, 130, 246, 0.1);
    border-radius: 1.5rem;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(59, 130, 246, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: pulse 2s infinite;
}

.profile-image {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.profile-image i {
    font-size: 5rem;
    color: white;
}

.floating-icons {
    position: absolute;
    width: 100%;
    height: 100%;
}

.floating-icons i {
    position: absolute;
    font-size: 1.5rem;
    color: #3b82f6;
    animation: float-icon 3s infinite ease-in-out;
}

.floating-icons i:nth-child(1) {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.floating-icons i:nth-child(2) {
    top: 30%;
    right: 15%;
    animation-delay: 0.5s;
}

.floating-icons i:nth-child(3) {
    bottom: 30%;
    left: 15%;
    animation-delay: 1s;
}

.floating-icons i:nth-child(4) {
    bottom: 20%;
    right: 10%;
    animation-delay: 1.5s;
}

@keyframes float-icon {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-arrow i {
    font-size: 1.5rem;
    color: #3b82f6;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-100px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(100px); }
    to { opacity: 1; transform: translateX(0); }
}

/* Section Styles */
.section {
    padding: 6rem 0;
    position: relative;
}

.section-alt {
    background: #f8fafc;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: #1e293b;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    border-radius: 2px;
}

/* Timeline Styles */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    width: 50%;
    padding: 0 2rem;
}

.timeline-item:nth-child(odd) {
    left: 0;
    text-align: right;
}

.timeline-item:nth-child(even) {
    left: 50%;
}

.timeline-marker {
    position: absolute;
    width: 20px;
    height: 20px;
    background: #3b82f6;
    border: 4px solid #f8fafc;
    border-radius: 50%;
    top: 1rem;
    z-index: 2;
}

.timeline-item:nth-child(odd) .timeline-marker {
    right: -12px;
}

.timeline-item:nth-child(even) .timeline-marker {
    left: -12px;
}

.timeline-card {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #e2e8f0;
}

.timeline-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.2);
}

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

.timeline-header h3 {
    color: #1e293b;
    font-size: 1.3rem;
    font-weight: 600;
}

.timeline-date {
    color: #3b82f6;
    font-weight: 600;
    background: rgba(59, 130, 246, 0.1);
    padding: 0.25rem 0.75rem;
    border-radius: 0.5rem;
    font-size: 0.875rem;
}

.timeline-card h4 {
    color: #475569;
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.institution {
    color: #64748b;
    font-style: italic;
    margin-bottom: 1rem;
}

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

.achievement-tag {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 500;
}

/* Experience Styles */
.experience-grid {
    max-width: 800px;
    margin: 0 auto;
}

.experience-card {
    background: white;
    padding: 2.5rem;
    border-radius: 1rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
}

.experience-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(59, 130, 246, 0.15);
}

.experience-header {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    align-items: center;
}

.experience-logo {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.experience-logo i {
    font-size: 1.5rem;
    color: white;
}

.experience-info h3 {
    font-size: 1.4rem;
    color: #1e293b;
    margin-bottom: 0.5rem;
}

.experience-info h4 {
    color: #3b82f6;
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.experience-duration {
    color: #64748b;
    font-size: 0.9rem;
}

.experience-details ul {
    list-style: none;
    margin-bottom: 1.5rem;
}

.experience-details li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.75rem;
    color: #475569;
    line-height: 1.6;
}

.experience-details li::before {
    content: 'â–¸';
    position: absolute;
    left: 0;
    color: #3b82f6;
    font-weight: bold;
}

.tech-stack {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.tech-tag {
    background: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
    padding: 0.4rem 0.8rem;
    border-radius: 1rem;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid rgba(59, 130, 246, 0.2);
}

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.project-card {
    background: white;
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #e2e8f0;
    position: relative;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(59, 130, 246, 0.2);
}

.project-image {
    height: 200px;
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.project-image::before {
    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="dots" width="10" height="10" patternUnits="userSpaceOnUse"><circle cx="5" cy="5" r="1" fill="%23ffffff" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23dots)"/></svg>');
}

.project-image i {
    font-size: 3rem;
    color: white;
    z-index: 2;
    position: relative;
}

.project-content {
    padding: 2rem;
}

.project-content h3 {
    font-size: 1.4rem;
    color: #1e293b;
    margin-bottom: 1rem;
    font-weight: 600;
}

.project-content p {
    color: #64748b;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

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

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

.project-link {
    color: #3b82f6;
    text-decoration: none;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border: 2px solid #3b82f6;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.project-link:hover {
    background: #3b82f6;
    color: white;
    transform: translateY(-2px);
}

/* Skills Grid */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.skill-category {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
}

.skill-category:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(59, 130, 246, 0.15);
}

.skill-category h3 {
    font-size: 1.3rem;
    color: #1e293b;
    margin-bottom: 1.5rem;
    text-align: center;
    font-weight: 600;
}

.skills-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.skill-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    position: relative;
}

.skill-item i {
    font-size: 1.5rem;
    color: #3b82f6;
    width: 24px;
}

.skill-item span {
    flex: 1;
    font-weight: 500;
    color: #374151;
}

.skill-level {
    flex: 2;
    height: 8px;
    background: #e2e8f0;
    border-radius: 4px;
    overflow: hidden;
    position: relative;
}

.skill-level::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    border-radius: 4px;
    transition: width 1s ease-out;
    width: 0;
}

.skill-level[data-level="90"]::before { width: 90%; }
.skill-level[data-level="85"]::before { width: 85%; }
.skill-level[data-level="80"]::before { width: 80%; }
.skill-level[data-level="75"]::before { width: 75%; }
.skill-level[data-level="70"]::before { width: 70%; }

/* Publications Grid */
.publications-grid {
    display: grid;
    gap: 2rem;
    margin-top: 3rem;
}

.publication-card {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    border: 1px solid #e2e8f0;
    display: flex;
    gap: 1.5rem;
    transition: all 0.3s ease;
}

.publication-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(59, 130, 246, 0.15);
}

.publication-icon {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.publication-content h3 {
    font-size: 1.3rem;
    color: #1e293b;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.publication-authors {
    color: #3b82f6;
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.publication-venue {
    color: #64748b;
    font-style: italic;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.publication-description {
    color: #475569;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.publication-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.pub-tag {
    background: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 500;
}

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

.pub-link {
    color: #3b82f6;
    text-decoration: none;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.pub-link:hover {
    color: #1d4ed8;
    transform: translateX(2px);
}

/* Contact Section */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.contact-info h3 {
    font-size: 1.8rem;
    color: #1e293b;
    margin-bottom: 1rem;
}

.contact-info p {
    color: #64748b;
    line-height: 1.6;
    margin-bottom: 2rem;
}

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

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.contact-item i {
    font-size: 1.2rem;
    color: #3b82f6;
    width: 20px;
}

.contact-item div span {
    display: block;
    font-size: 0.875rem;
    color: #64748b;
    font-weight: 500;
}

.contact-item a,
.contact-item p {
    color: #1e293b;
    text-decoration: none;
    font-weight: 500;
}

.contact-item a:hover {
    color: #3b82f6;
}

.contact-form {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    border: 1px solid #e2e8f0;
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.875rem;
    border: 2px solid #e2e8f0;
    border-radius: 0.5rem;
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: #f8fafc;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    background: white;
}

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

.contact-form .btn {
    width: 100%;
    justify-content: center;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.social-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: #64748b;
    text-decoration: none;
    padding: 1rem;
    border-radius: 1rem;
    transition: all 0.3s ease;
    background: white;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    border: 1px solid #e2e8f0;
}

.social-link:hover {
    color: #3b82f6;
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(59, 130, 246, 0.2);
}

.social-link i {
    font-size: 1.5rem;
}

.social-link span {
    font-size: 0.875rem;
    font-weight: 500;
}

/* Footer */
.footer {
    background: #1e293b;
    color: #e2e8f0;
    padding: 2rem 0;
    text-align: center;
}

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

.footer-content p {
    margin: 0;
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(15, 23, 42, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        padding: 2rem;
        gap: 1rem;
        transition: all 0.3s ease;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-link {
        flex-direction: row;
        justify-content: center;
        width: 100%;
        padding: 1rem;
    }

    .hamburger {
        display: flex;
    }

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

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

    .timeline::before {
        left: 1rem;
    }

    .timeline-item {
        width: calc(100% - 2rem);
        left: 2rem;
        text-align: left;
    }

    .timeline-item .timeline-marker {
        left: -12px;
    }

    .timeline-header {
        flex-direction: column;
        align-items: start;
        gap: 0.5rem;
    }

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

    .social-links {
        gap: 1rem;
    }

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

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

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

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    .nav-container {
        padding: 1rem;
    }

    .hero {
        padding: 6rem 1rem 2rem;
    }

    .section {
        padding: 4rem 0;
    }

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

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

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

    .hero-description {
        font-size: 1rem;
    }

    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.9rem;
    }

    .profile-card {
        width: 250px;
        height: 250px;
    }

    .profile-image {
        width: 150px;
        height: 150px;
    }

    .profile-image i {
        font-size: 4rem;
    }

    .timeline-card,
    .experience-card,
    .skill-category,
    .contact-form {
        padding: 1.5rem;
    }

    .publication-card {
        flex-direction: column;
        text-align: center;
    }

    .publication-icon {
        align-self: center;
    }
}

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

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

.slide-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: all 0.6s ease;
}

.slide-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.slide-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: all 0.6s ease;
}

.slide-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

/* Scroll Progress Indicator */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: rgba(59, 130, 246, 0.2);
    z-index: 1001;
}

.scroll-progress-bar {
    height: 100%;
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    width: 0%;
    transition: width 0.3s ease;
}

.cite-btn.copied {
    color: #10b981; /* green for success */
}