/* ===========================
   CSS Variables
   =========================== */
:root {
    --primary-color: #2c5aa0;
    --primary-dark: #1d3f7a;
    --primary-light: #4a7bc8;
    --secondary-color: #34495e;
    --accent-color: #3498db;
    --text-dark: #2c3e50;
    --text-light: #7f8c8d;
    --white: #ffffff;
    --gray-light: #ecf0f1;
    --gray-medium: #bdc3c7;
    --gray-dark: #95a5a6;
    --section-alt-bg: #f8f9fa;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --transition-speed: 0.3s;
    --border-radius: 8px;
    --max-width: 1200px;
}

/* ===========================
   Global Styles
   =========================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Merriweather', Georgia, serif;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: 1rem;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-speed);
}

a:hover {
    color: var(--primary-light);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul {
    list-style-position: inside;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 5rem 0;
}

.section-alt {
    background-color: var(--section-alt-bg);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--primary-dark);
    position: relative;
    padding-bottom: 1rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(to right, var(--primary-color), var(--primary-light));
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 3rem;
}

/* ===========================
   Navigation
   =========================== */
#navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--white);
    box-shadow: var(--shadow-md);
    z-index: 1000;
    transition: all var(--transition-speed);
}

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

.nav-logo a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    font-family: 'Merriweather', serif;
}

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

.nav-link {
    color: var(--text-dark);
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
    transition: color var(--transition-speed);
}

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

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--primary-color);
    transition: all var(--transition-speed);
    border-radius: 2px;
}

/* ===========================
   Home Section
   =========================== */
.home-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 8rem 2rem 5rem;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.home-content {
    max-width: 800px;
    animation: fadeInUp 1s ease;
}

.profile-image {
    margin: 0 auto 2rem;
    width: 250px;
    height: 250px;
    border-radius: 50%;
    overflow: hidden;
    border: 6px solid var(--white);
    box-shadow: var(--shadow-lg);
}

.profile-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.name {
    font-size: 3rem;
    color: var(--primary-dark);
    margin-bottom: 0.5rem;
}

.title {
    font-size: 1.5rem;
    color: var(--secondary-color);
    font-weight: 400;
    margin-bottom: 0.5rem;
}

.affiliation {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 0.3rem;
}

.location {
    font-size: 1rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin: 2rem 0;
}

.social-links a {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--white);
    border-radius: 50%;
    color: var(--primary-color);
    font-size: 1.5rem;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-speed);
}

.social-links a:hover {
    background-color: var(--primary-color);
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    border-radius: var(--border-radius);
    font-weight: 500;
    font-size: 1rem;
    transition: all var(--transition-speed);
    cursor: pointer;
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

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

/* ===========================
   About Section
   =========================== */
.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-text {
    font-size: 1.1rem;
    line-height: 1.8;
}

.lead {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--primary-dark);
    margin-bottom: 1.5rem;
}

.about-text h3 {
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.research-interests,
.achievements {
    list-style: none;
    margin: 1rem 0;
}

.research-interests li,
.achievements li {
    padding: 0.75rem 0;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.research-interests li i,
.achievements li i {
    color: var(--primary-color);
    font-size: 1.2rem;
    margin-top: 0.2rem;
    flex-shrink: 0;
}

/* ===========================
   Research Section
   =========================== */
.research-overview {
    max-width: 1000px;
    margin: 0 auto;
}

.research-overview h3 {
    color: var(--primary-color);
    margin-top: 2.5rem;
    margin-bottom: 1rem;
}

.research-areas {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.research-card {
    background-color: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-speed);
}

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

.research-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.research-card h4 {
    color: var(--primary-dark);
    margin-bottom: 0.75rem;
}

.research-card p {
    color: var(--text-light);
    font-size: 0.95rem;
}

.methodologies,
.collaborations {
    list-style: none;
    margin: 1rem 0;
}

.methodologies li,
.collaborations li {
    padding: 0.5rem 0;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.methodologies li i {
    color: var(--accent-color);
    margin-top: 0.2rem;
}

/* ===========================
   Publications Section
   =========================== */
.publications-list {
    max-width: 1000px;
    margin: 0 auto;
}

.publication-year {
    margin: 3rem 0 1.5rem;
}

.publication-year h3 {
    color: var(--primary-color);
    font-size: 1.75rem;
    border-bottom: 2px solid var(--gray-light);
    padding-bottom: 0.5rem;
}

.publication-item {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background-color: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-speed);
}

.publication-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(5px);
}

.pub-number {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

.pub-content {
    flex: 1;
}

.pub-title {
    color: var(--primary-dark);
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.pub-authors {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-bottom: 0.3rem;
}

.pub-journal {
    color: var(--text-light);
    font-size: 0.9rem;
    font-style: italic;
    margin-bottom: 0.5rem;
}

.pub-link {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.4rem 1rem;
    background-color: var(--primary-light);
    color: var(--white);
    border-radius: 4px;
    font-size: 0.9rem;
    transition: all var(--transition-speed);
}

.pub-link:hover {
    background-color: var(--primary-color);
    transform: translateY(-2px);
}

.publications-note {
    margin-top: 3rem;
    padding: 1.5rem;
    background-color: var(--gray-light);
    border-left: 4px solid var(--primary-color);
    border-radius: var(--border-radius);
}

/* Books Section */
.books-section {
    margin-top: 4rem;
}

.books-section h3 {
    color: var(--primary-color);
    font-size: 2rem;
    margin-bottom: 2rem;
    text-align: center;
}

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

.book-item {
    background-color: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: all var(--transition-speed);
}

.book-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.book-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.book-item h4 {
    color: var(--primary-dark);
    margin-bottom: 0.75rem;
    min-height: 2.5rem;
}

.book-authors {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.book-isbn {
    color: var(--text-light);
    font-size: 0.85rem;
    margin-bottom: 1rem;
}

/* ===========================
   Experience Section
   =========================== */
.timeline {
    max-width: 800px;
    margin: 0 auto 3rem;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background-color: var(--primary-color);
}

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

.timeline-marker {
    position: absolute;
    left: -8px;
    top: 0;
    width: 20px;
    height: 20px;
    background-color: var(--primary-color);
    border: 3px solid var(--white);
    border-radius: 50%;
    box-shadow: var(--shadow-sm);
}

.timeline-content {
    background-color: var(--white);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.timeline-date {
    display: inline-block;
    padding: 0.3rem 0.75rem;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 4px;
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
}

.timeline-content h3 {
    color: var(--primary-dark);
    margin-bottom: 0.5rem;
}

.timeline-content h4 {
    color: var(--text-dark);
    font-weight: 500;
    margin-bottom: 0.3rem;
}

.timeline-content .location {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.timeline-content ul {
    list-style: none;
    margin-left: 0;
}

.timeline-content ul li {
    padding: 0.4rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.timeline-content ul li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.subsection-title {
    color: var(--primary-color);
    font-size: 1.75rem;
    margin: 3rem 0 2rem;
    text-align: center;
}

.roles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.role-card {
    background-color: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-speed);
}

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

.role-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.role-card h4 {
    color: var(--primary-dark);
    margin-bottom: 0.5rem;
}

.role-period {
    color: var(--text-light);
    font-size: 0.9rem;
    font-style: italic;
    margin-bottom: 0.75rem;
}

.role-card p {
    font-size: 0.95rem;
    color: var(--text-light);
}

.initiatives-list {
    max-width: 800px;
    margin: 2rem auto;
}

.initiative-item {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    background-color: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-speed);
}

.initiative-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(5px);
}

.initiative-item i {
    font-size: 2rem;
    color: var(--primary-color);
    flex-shrink: 0;
}

.initiative-item h4 {
    color: var(--primary-dark);
    margin-bottom: 0.3rem;
}

.initiative-item p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* ===========================
   Education Section
   =========================== */
.education-timeline {
    max-width: 800px;
    margin: 0 auto 3rem;
}

.edu-item {
    display: flex;
    gap: 2rem;
    margin-bottom: 3rem;
    padding: 2rem;
    background-color: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-speed);
}

.edu-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.edu-icon {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.edu-content {
    flex: 1;
}

.edu-date {
    display: inline-block;
    padding: 0.3rem 0.75rem;
    background-color: var(--primary-light);
    color: var(--white);
    border-radius: 4px;
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
}

.edu-content h3 {
    color: var(--primary-dark);
    margin-bottom: 0.5rem;
}

.edu-content h4 {
    color: var(--text-dark);
    font-weight: 500;
    margin-bottom: 0.3rem;
}

.specialization,
.thesis-title,
.grade {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-bottom: 0.3rem;
}

.qualifications {
    max-width: 800px;
    margin: 3rem auto;
    padding: 2rem;
    background-color: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.qualifications h3 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    text-align: center;
}

.qual-items {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    justify-content: center;
}

.qual-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    background-color: var(--gray-light);
    border-radius: var(--border-radius);
}

.qual-item i {
    color: var(--primary-color);
    font-size: 1.5rem;
}

/* ===========================
   Awards Section
   =========================== */
.awards-grid {
    max-width: 1000px;
    margin: 0 auto;
}

.award-category {
    margin-bottom: 3rem;
}

.award-category h3 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.award-category h3 i {
    font-size: 1.5rem;
}

.awards-list {
    list-style: none;
}

.awards-list li {
    margin-bottom: 1rem;
}

.award-item {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem 1.5rem;
    background-color: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-speed);
}

.award-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(5px);
}

.award-year {
    flex-shrink: 0;
    padding: 0.3rem 0.75rem;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 600;
}

/* Skills Section */
.skills-section {
    margin-top: 3rem;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.skill-category {
    background-color: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.skill-category h3 {
    color: var(--primary-dark);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.skill-category h3 i {
    color: var(--primary-color);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.skill-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: var(--gray-light);
    color: var(--text-dark);
    border-radius: 20px;
    font-size: 0.9rem;
    transition: all var(--transition-speed);
}

.skill-tag:hover {
    background-color: var(--primary-color);
    color: var(--white);
    transform: translateY(-2px);
}

/* Memberships Section */
.memberships-section {
    margin-top: 3rem;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.memberships-section h3 {
    color: var(--primary-color);
    font-size: 1.75rem;
    margin-bottom: 2rem;
    text-align: center;
}

.memberships-grid {
    display: grid;
    gap: 1rem;
}

.membership-item {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
    padding: 1.25rem;
    background-color: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-speed);
}

.membership-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(5px);
}

.membership-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
    flex-shrink: 0;
    margin-top: 0.2rem;
}

.membership-item div {
    flex: 1;
}

.membership-item strong {
    display: block;
    color: var(--primary-dark);
    margin-bottom: 0.3rem;
}

.membership-item span {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* ===========================
   Contact Section
   =========================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-top: 2rem;
}

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

.contact-item {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.contact-icon {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.contact-details h3 {
    color: var(--primary-dark);
    margin-bottom: 0.5rem;
}

.contact-details p {
    color: var(--text-light);
    line-height: 1.6;
}

.contact-details a {
    color: var(--primary-color);
}

.social-links-contact {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 0.5rem;
}

.social-links-contact a {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-color);
    font-size: 1rem;
    transition: all var(--transition-speed);
}

.social-links-contact a:hover {
    color: var(--primary-light);
    transform: translateX(5px);
}

.contact-map h3 {
    color: var(--primary-dark);
    margin-bottom: 1rem;
}

.map-container {
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

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

.footer-content p {
    margin-bottom: 0.5rem;
}

.footer-note {
    font-size: 0.9rem;
    color: var(--gray-medium);
}

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

.footer-links a {
    color: var(--white);
    transition: color var(--transition-speed);
}

.footer-links a:hover {
    color: var(--primary-light);
}

.separator {
    color: var(--gray-medium);
}

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

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

/* ===========================
   Responsive Design
   =========================== */
@media (max-width: 968px) {
    html {
        font-size: 15px;
    }
    
    .container {
        padding: 0 1.5rem;
    }
    
    .section {
        padding: 4rem 0;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .roles-grid {
        grid-template-columns: 1fr;
    }
    
    .research-areas {
        grid-template-columns: 1fr;
    }
    
    .books-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--white);
        width: 100%;
        text-align: center;
        transition: left var(--transition-speed);
        box-shadow: var(--shadow-md);
        padding: 2rem 0;
        gap: 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        margin: 1rem 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hamburger.active span:nth-child(1) {
        transform: rotate(-45deg) translate(-5px, 6px);
    }
    
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active span:nth-child(3) {
        transform: rotate(45deg) translate(-5px, -6px);
    }
    
    .home-section {
        padding: 6rem 1rem 4rem;
        min-height: auto;
    }
    
    .name {
        font-size: 2rem;
    }
    
    .title {
        font-size: 1.25rem;
    }
    
    .profile-image {
        width: 200px;
        height: 200px;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .publication-item {
        flex-direction: column;
        gap: 1rem;
    }
    
    .pub-number {
        align-self: flex-start;
    }
    
    .edu-item {
        flex-direction: column;
        gap: 1rem;
    }
    
    .timeline::before {
        left: 10px;
    }
    
    .timeline-item {
        padding-left: 3rem;
    }
    
    .timeline-marker {
        left: 2px;
    }
    
    .award-item {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .qual-items {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    .social-links {
        gap: 1rem;
    }
    
    .social-links a {
        width: 45px;
        height: 45px;
        font-size: 1.25rem;
    }
    
    .books-grid {
        grid-template-columns: 1fr;
    }
}

/* ===========================
   Print Styles
   =========================== */
@media print {
    #navbar,
    .hamburger,
    .cta-buttons,
    .social-links,
    .footer {
        display: none;
    }
    
    .section {
        page-break-inside: avoid;
        padding: 1rem 0;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
    }
    
    h1 { font-size: 20pt; }
    h2 { font-size: 18pt; }
    h3 { font-size: 16pt; }
    
    a {
        color: #000;
        text-decoration: underline;
    }
    
    .home-section {
        min-height: auto;
        padding: 1rem;
    }
}

/* ===========================
   New Sections Styles
   =========================== */

/* Key Highlights */
.key-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background-color: var(--gray-light);
    border-radius: var(--border-radius);
    transition: transform var(--transition-speed);
}

.highlight-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.highlight-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.highlight-item span {
    font-weight: 500;
    color: var(--text-dark);
}

/* Research Interests and Key Achievements Boxes */
.research-interests-box,
.key-achievements-box {
    margin: 2rem 0;
    padding: 2rem;
    background-color: var(--gray-light);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-color);
}

.research-interests-box h3,
.key-achievements-box h3 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.research-interests,
.achievements {
    list-style: none;
    padding: 0;
}

.research-interests li,
.achievements li {
    padding: 0.75rem 0;
    padding-left: 2rem;
    position: relative;
    border-bottom: 1px solid var(--gray-medium);
}

.research-interests li:last-child,
.achievements li:last-child {
    border-bottom: none;
}

.research-interests li i,
.achievements li i {
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

/* Education Timeline */
.education-timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem 0;
}

.education-timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--primary-color);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    padding-left: 80px;
}

.timeline-icon {
    position: absolute;
    left: 0;
    width: 60px;
    height: 60px;
    background-color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.5rem;
    box-shadow: var(--shadow-md);
    z-index: 1;
}

.timeline-content {
    background-color: var(--white);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    border-left: 3px solid var(--primary-color);
}

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

.timeline-content h4 {
    color: var(--text-light);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.timeline-date,
.grade {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.grade i {
    color: #f39c12;
}

/* Experience Card */
.experience-card {
    background-color: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    border-left: 4px solid var(--primary-color);
}

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

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

.experience-header h4 {
    color: var(--text-light);
    font-weight: 500;
}

.experience-duration {
    color: var(--text-light);
    font-weight: 500;
}

.experience-description {
    color: var(--text-dark);
    line-height: 1.7;
}

/* Professional Roles Grid */
.roles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.role-card {
    background-color: var(--white);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    border-top: 3px solid var(--primary-color);
}

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

.role-icon {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.role-card h4 {
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.role-period {
    color: var(--text-light);
    font-size: 0.85rem;
    font-style: italic;
}

.role-desc {
    color: var(--text-dark);
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

/* Research Areas */
.research-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.research-area {
    background-color: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

.research-area:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.research-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.research-area h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.key-projects {
    background-color: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.key-projects h3 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.key-projects ul {
    list-style: none;
    padding: 0;
}

.key-projects li {
    padding: 0.75rem 0 0.75rem 2rem;
    position: relative;
    border-bottom: 1px solid var(--gray-light);
}

.key-projects li:last-child {
    border-bottom: none;
}

.key-projects li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* Publications */
.publications-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin: 2rem 0 3rem;
}

.stat-card {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--shadow-md);
}

.stat-card i {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.stat-card h3 {
    font-size: 2.5rem;
    color: var(--white);
    margin-bottom: 0.5rem;
}

.stat-card p {
    font-size: 1.1rem;
    margin: 0;
}

.publications-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    border-bottom: 2px solid var(--gray-light);
}

.tab-button {
    padding: 1rem 2rem;
    background: none;
    border: none;
    color: var(--text-dark);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    position: relative;
    transition: color var(--transition-speed);
}

.tab-button:hover {
    color: var(--primary-color);
}

.tab-button.active {
    color: var(--primary-color);
}

.tab-button.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--primary-color);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.publications-list .publication-item {
    display: flex;
    gap: 1.5rem;
    background-color: var(--white);
    padding: 1.5rem;
    margin-bottom: 1rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

.publications-list .publication-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
}

.pub-number {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.2rem;
}

.pub-content {
    flex: 1;
}

.pub-title {
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.pub-authors,
.pub-journal {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
}

.pub-links {
    margin-top: 0.5rem;
}

.pub-links a {
    color: var(--primary-color);
    font-size: 0.9rem;
    margin-right: 1rem;
}

.pub-links a:hover {
    text-decoration: underline;
}

.publication-note {
    background-color: var(--gray-light);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    margin-top: 2rem;
    text-align: center;
}

.publication-note i {
    color: var(--primary-color);
    margin-right: 0.5rem;
}

/* Books Grid */
.books-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
}

.book-card {
    background-color: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

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

.book-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.book-card h4 {
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.book-isbn,
.book-date {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.book-description {
    color: var(--text-dark);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Awards Grid */
.awards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.award-card {
    background-color: var(--white);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    position: relative;
    overflow: hidden;
}

.award-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background-color: var(--primary-color);
}

.award-card.highlight::before {
    width: 6px;
    background: linear-gradient(180deg, #f39c12, #e74c3c);
}

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

.award-icon {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.award-card h4 {
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.award-card p {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.award-year {
    display: inline-block;
    background-color: var(--primary-color);
    color: var(--white);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    margin-top: 0.5rem;
}

/* Memberships Grid */
.memberships-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.membership-card {
    background-color: var(--white);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    border-top: 3px solid var(--primary-color);
}

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

.membership-icon {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.membership-card h4 {
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.membership-type {
    color: var(--text-light);
    font-size: 0.9rem;
    font-weight: 500;
}

/* Reviewer Grid */
.reviewer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
}

.reviewer-card {
    background-color: var(--white);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

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

.reviewer-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.reviewer-card h4 {
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.reviewer-card p {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* Certifications Grid */
.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
}

.cert-card {
    background-color: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

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

.cert-badge {
    width: 80px;
    height: 80px;
    margin: 0 auto 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 2rem;
}

.cert-card h4 {
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.cert-card p {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* Skills & Interests */
.skills-content {
    display: grid;
    gap: 2rem;
}

.skills-category {
    background-color: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.skills-category h3 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.skills-category h3 i {
    margin-right: 0.5rem;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.skill-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: var(--gray-light);
    color: var(--text-dark);
    border-radius: 20px;
    font-size: 0.9rem;
    transition: background-color var(--transition-speed), transform var(--transition-speed);
}

.skill-tag:hover {
    background-color: var(--primary-color);
    color: var(--white);
    transform: translateY(-2px);
}

.skill-tag i {
    margin-right: 0.25rem;
}

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

.contact-card {
    background-color: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    text-align: center;
}

.contact-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1rem;
    background-color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.5rem;
}

.contact-card h4 {
    color: var(--primary-color);
    margin-bottom: 0.75rem;
}

.contact-card p {
    color: var(--text-dark);
    margin: 0;
}

.contact-card a {
    color: var(--primary-color);
    font-weight: 500;
}

.social-profiles {
    background-color: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
}

.social-profiles h3 {
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 2rem;
}

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

.profile-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background-color: var(--gray-light);
    border-radius: var(--border-radius);
    transition: all var(--transition-speed);
    font-weight: 500;
}

.profile-link:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.profile-link.linkedin:hover {
    background-color: #0077b5;
    color: var(--white);
}

.profile-link.orcid:hover {
    background-color: #a6ce39;
    color: var(--white);
}

.profile-link.scholar:hover {
    background-color: #4285f4;
    color: var(--white);
}

.profile-link.vidwan:hover {
    background-color: var(--primary-color);
    color: var(--white);
}

.profile-link i {
    font-size: 1.25rem;
}

/* Footer */
footer {
    background-color: var(--primary-dark);
    color: var(--white);
    padding: 3rem 0 1rem;
}

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

.footer-info h3 {
    color: var(--white);
    margin-bottom: 1rem;
}

.footer-info p {
    color: var(--gray-light);
    margin-bottom: 0.5rem;
}

.footer-links h4,
.footer-social h4 {
    color: var(--white);
    margin-bottom: 1rem;
}

.footer-links ul {
    list-style: none;
    padding: 0;
}

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

.footer-links a {
    color: var(--gray-light);
    transition: color var(--transition-speed);
}

.footer-links a:hover {
    color: var(--white);
}

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

.footer-social-icons a {
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.2rem;
    transition: background-color var(--transition-speed);
}

.footer-social-icons a:hover {
    background-color: var(--primary-light);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1.5rem;
    text-align: center;
}

.footer-bottom p {
    color: var(--gray-light);
    margin: 0.5rem 0;
}

.footer-note {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Section Subtitle */
.section-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 1.1rem;
    margin: -1.5rem auto 2rem;
    max-width: 700px;
}

/* Responsive Design Additions */
@media (max-width: 768px) {
    .education-timeline::before {
        left: 20px;
    }
    
    .timeline-item {
        padding-left: 70px;
    }
    
    .timeline-icon {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
    
    .experience-header {
        flex-direction: column;
    }
    
    .roles-grid,
    .awards-grid,
    .memberships-grid,
    .reviewer-grid,
    .certifications-grid,
    .books-grid {
        grid-template-columns: 1fr;
    }
    
    .publications-tabs {
        flex-direction: column;
    }
    
    .tab-button {
        padding: 0.75rem 1rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-social-icons {
        justify-content: center;
    }
}

/* Key Highlights */
.key-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background-color: var(--gray-light);
    border-radius: var(--border-radius);
    transition: transform var(--transition-speed);
}

.highlight-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

/* Research Interests and Key Achievements Boxes */
.research-interests-box,
.key-achievements-box {
    margin: 2rem 0;
    padding: 2rem;
    background-color: var(--gray-light);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-color);
}

.research-interests-box h3,
.key-achievements-box h3 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.research-interests,
.achievements {
    list-style: none;
    padding: 0;
}

.research-interests li,
.achievements li {
    padding: 0.75rem 0;
    padding-left: 2rem;
    position: relative;
    border-bottom: 1px solid var(--gray-medium);
}

.research-interests li:last-child,
.achievements li:last-child {
    border-bottom: none;
}

.research-interests li i,
.achievements li i {
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

/* Education Timeline */
.education-timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem 0;
}

.education-timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--primary-color);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    padding-left: 80px;
}

.timeline-icon {
    position: absolute;
    left: 0;
    width: 60px;
    height: 60px;
    background-color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.5rem;
    box-shadow: var(--shadow-md);
    z-index: 1;
}

.timeline-content {
    background-color: var(--white);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    border-left: 3px solid var(--primary-color);
}

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

.timeline-content h4 {
    color: var(--text-light);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.timeline-date,
.grade {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.grade i {
    color: #f39c12;
}

/* Experience Card */
.experience-card {
    background-color: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    border-left: 4px solid var(--primary-color);
}

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

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

.experience-header h4 {
    color: var(--text-light);
    font-weight: 500;
}

.experience-duration {
    color: var(--text-light);
    font-weight: 500;
}

.experience-description {
    color: var(--text-dark);
    line-height: 1.7;
}

/* Professional Roles Grid */
.roles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.role-card {
    background-color: var(--white);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    border-top: 3px solid var(--primary-color);
}

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

.role-icon {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.role-card h4 {
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.role-period {
    color: var(--text-light);
    font-size: 0.85rem;
    font-style: italic;
}

.role-desc {
    color: var(--text-dark);
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

/* Research Areas */
.research-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.research-area {
    background-color: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

.research-area:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.research-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.research-area h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.key-projects {
    background-color: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.key-projects h3 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.key-projects ul {
    list-style: none;
    padding: 0;
}

.key-projects li {
    padding: 0.75rem 0 0.75rem 2rem;
    position: relative;
    border-bottom: 1px solid var(--gray-light);
}

.key-projects li:last-child {
    border-bottom: none;
}

.key-projects li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* Publications */
.publications-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin: 2rem 0 3rem;
}

.stat-card {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--shadow-md);
}

.stat-card i {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.stat-card h3 {
    font-size: 2.5rem;
    color: var(--white);
    margin-bottom: 0.5rem;
}

.stat-card p {
    font-size: 1.1rem;
    margin: 0;
}

.publications-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    border-bottom: 2px solid var(--gray-light);
}

.tab-button {
    padding: 1rem 2rem;
    background: none;
    border: none;
    color: var(--text-dark);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    position: relative;
    transition: color var(--transition-speed);
}

.tab-button:hover {
    color: var(--primary-color);
}

.tab-button.active {
    color: var(--primary-color);
}

.tab-button.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--primary-color);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.publications-list .publication-item {
    display: flex;
    gap: 1.5rem;
    background-color: var(--white);
    padding: 1.5rem;
    margin-bottom: 1rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

.publications-list .publication-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
}

.pub-number {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.2rem;
}

.pub-content {
    flex: 1;
}

.pub-title {
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.pub-authors,
.pub-journal {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
}

.pub-links {
    margin-top: 0.5rem;
}

.pub-links a {
    color: var(--primary-color);
    font-size: 0.9rem;
    margin-right: 1rem;
}

.pub-links a:hover {
    text-decoration: underline;
}

.publication-note {
    background-color: var(--gray-light);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    margin-top: 2rem;
    text-align: center;
}

.publication-note i {
    color: var(--primary-color);
    margin-right: 0.5rem;
}

/* Books Grid */
.books-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
}

.book-card {
    background-color: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

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

.book-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.book-card h4 {
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.book-isbn,
.book-date {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.book-description {
    color: var(--text-dark);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Awards Grid */
.awards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.award-card {
    background-color: var(--white);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    position: relative;
    overflow: hidden;
}

.award-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background-color: var(--primary-color);
}

.award-card.highlight::before {
    width: 6px;
    background: linear-gradient(180deg, #f39c12, #e74c3c);
}

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

.award-icon {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.award-card h4 {
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.award-card p {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.award-year {
    display: inline-block;
    background-color: var(--primary-color);
    color: var(--white);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    margin-top: 0.5rem;
}

/* Memberships Grid */
.memberships-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.membership-card {
    background-color: var(--white);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    border-top: 3px solid var(--primary-color);
}

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

.membership-icon {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.membership-card h4 {
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.membership-type {
    color: var(--text-light);
    font-size: 0.9rem;
    font-weight: 500;
}

/* Reviewer Grid */
.reviewer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
}

.reviewer-card {
    background-color: var(--white);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

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

.reviewer-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.reviewer-card h4 {
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.reviewer-card p {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* Certifications Grid */
.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
}

.cert-card {
    background-color: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

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

.cert-badge {
    width: 80px;
    height: 80px;
    margin: 0 auto 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 2rem;
}

.cert-card h4 {
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.cert-card p {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* Skills & Interests */
.skills-content {
    display: grid;
    gap: 2rem;
}

.skills-category {
    background-color: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.skills-category h3 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.skills-category h3 i {
    margin-right: 0.5rem;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.skill-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: var(--gray-light);
    color: var(--text-dark);
    border-radius: 20px;
    font-size: 0.9rem;
    transition: background-color var(--transition-speed), transform var(--transition-speed);
}

.skill-tag:hover {
    background-color: var(--primary-color);
    color: var(--white);
    transform: translateY(-2px);
}

.skill-tag i {
    margin-right: 0.25rem;
}

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

.contact-card {
    background-color: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    text-align: center;
}

.contact-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1rem;
    background-color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.5rem;
}

.contact-card h4 {
    color: var(--primary-color);
    margin-bottom: 0.75rem;
}

.contact-card p {
    color: var(--text-dark);
    margin: 0;
}

.contact-card a {
    color: var(--primary-color);
    font-weight: 500;
}

.social-profiles {
    background-color: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
}

.social-profiles h3 {
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 2rem;
}

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

.profile-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background-color: var(--gray-light);
    border-radius: var(--border-radius);
    transition: all var(--transition-speed);
    font-weight: 500;
}

.profile-link:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.profile-link.linkedin:hover {
    background-color: #0077b5;
    color: var(--white);
}

.profile-link.orcid:hover {
    background-color: #a6ce39;
    color: var(--white);
}

.profile-link.scholar:hover {
    background-color: #4285f4;
    color: var(--white);
}

.profile-link.vidwan:hover {
    background-color: var(--primary-color);
    color: var(--white);
}

.profile-link i {
    font-size: 1.25rem;
}

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

.footer-info h3 {
    color: var(--white);
    margin-bottom: 1rem;
}

.footer-info p {
    color: var(--gray-light);
    margin-bottom: 0.5rem;
}

.footer-links h4,
.footer-social h4 {
    color: var(--white);
    margin-bottom: 1rem;
}

.footer-links ul {
    list-style: none;
    padding: 0;
}

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

.footer-links a {
    color: var(--gray-light);
    transition: color var(--transition-speed);
}

.footer-links a:hover {
    color: var(--white);
}

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

.footer-social-icons a {
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.2rem;
    transition: background-color var(--transition-speed);
}

.footer-social-icons a:hover {
    background-color: var(--primary-light);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1.5rem;
    text-align: center;
}

.footer-bottom p {
    color: var(--gray-light);
    margin: 0.5rem 0;
}

.footer-note {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Section Subtitle */
.section-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 1.1rem;
    margin: -1.5rem auto 2rem;
    max-width: 700px;
}

/* Lead text */
.lead {
    font-size: 1.15rem;
    line-height: 1.8;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
}

/* Responsive Design Additions */
@media (max-width: 768px) {
    .education-timeline::before {
        left: 20px;
    }
    
    .timeline-item {
        padding-left: 70px;
    }
    
    .timeline-icon {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
    
    .experience-header {
        flex-direction: column;
    }
    
    .roles-grid,
    .awards-grid,
    .memberships-grid,
    .reviewer-grid,
    .certifications-grid,
    .books-grid {
        grid-template-columns: 1fr;
    }
    
    .publications-tabs {
        flex-direction: column;
    }
    
    .tab-button {
        padding: 0.75rem 1rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-social-icons {
        justify-content: center;
    }
    
    .key-highlights {
        grid-template-columns: 1fr;
    }
    
    .publications-stats {
        grid-template-columns: 1fr;
    }
}