/* Modern Black and White Theme with Google's Font Family */
:root {
    --primary-color: #000;
    --secondary-color: #fff;
    --accent-color: #1a73e8;  /* Reverted to previous blue */
    --accent-red: #CF6679;
    --accent-yellow: #FFB300;
    --accent-green: #03DAC5;
    --light-gray: #f8f9fa;
    --medium-gray: #dadce0;
    --dark-gray: #202124;
    --font-primary: 'Google Sans', 'Product Sans', sans-serif;
    --transition-speed: 0.3s;
    --box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    --border-radius: 8px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-primary), -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: var(--dark-gray);
    background-color: var(--secondary-color);
    letter-spacing: 0.01em;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 0.5em;
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
    position: relative;
    padding-bottom: 0.5rem;
    margin-bottom: 1.5rem;
}

h2:after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    height: 4px;
    width: 60px;
    background-color: var(--primary-color);
}

h3 {
    font-size: 1.5rem;
}

p {
    margin-bottom: 1rem;
}

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

ul {
    list-style: none;
}

/* Header */
header {
    padding: 1.25rem 0;
    background-color: var(--secondary-color);
    border-bottom: 1px solid var(--medium-gray);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.logo h1 {
    font-size: 1.8rem;
    margin: 0;
    letter-spacing: -0.5px;
    font-weight: 500;
    color: var(--primary-color);
}

nav {
    margin-top: 1.25rem;
}

.nav-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.nav-links li {
    cursor: pointer;
    padding: 0.5rem 0.75rem;
    font-weight: 500;
    position: relative;
    transition: all var(--transition-speed) ease;
    border-radius: 4px;
}

.nav-links li:hover {
    color: var(--accent-color);
    background-color: rgba(98, 0, 238, 0.08);
}

.nav-links li.active {
    color: var(--accent-color);
    font-weight: 500;
    position: relative;
}

.nav-links li.active:after {
    content: '';
    position: absolute;
    left: 0.75rem;
    right: 0.75rem;
    bottom: -3px;
    height: 3px;
    background-color: var(--accent-color);
    border-radius: 2px;
}

/* Main Content */
main {
    min-height: calc(100vh - 180px);
    padding: 2rem 0;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 5rem 0;
    margin-bottom: 3rem;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.hero h2 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    letter-spacing: -1px;
    font-weight: 500;
    color: var(--dark-gray);
}

.hero h2:after {
    display: none;
}

.accent-text {
    background: linear-gradient(90deg, var(--accent-color), var(--accent-red), var(--accent-green), var(--accent-yellow));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    font-weight: 700;
}

.hero-tagline {
    font-size: 1.4rem;
    max-width: 700px;
    margin: 0 auto 2rem;
    color: var(--dark-gray);
    opacity: 0.85;
}

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

/* Featured Event */
.featured-event {
    margin-bottom: 4rem;
}

.featured-event h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    text-align: center;
    color: var(--dark-gray);
    font-weight: 500;
}

.event-card {
    background-color: var(--secondary-color);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    position: relative;
    border-top: 4px solid var(--accent-color);
}

.event-card::before {
    content: "📅";
    font-size: 60px;
    opacity: 0.1;
    position: absolute;
    top: 10px;
    right: 20px;
    color: var(--accent-color);
}

.event-card h4 {
    font-size: 1.6rem;
    margin-bottom: 1.25rem;
    color: var(--dark-gray);
    line-height: 1.3;
}

.event-card .speaker {
    color: var(--accent-color);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.event-card .location,
.event-card .date {
    font-weight: 500;
    margin-bottom: 0.75rem;
    color: var(--dark-gray);
    opacity: 0.8;
}

.event-card .description {
    border-top: 1px solid var(--medium-gray);
    padding-top: 1.25rem;
    margin-top: 1.25rem;
    line-height: 1.7;
}

.event-links {
    margin-top: 2rem;
    display: flex;
    gap: 1rem;
}

/* Faculty Section */
.faculty-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.faculty-card {
    background-color: var(--secondary-color);
    padding: 1.75rem;
    transition: all var(--transition-speed) ease;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    text-align: center;
    display: flex;
    flex-direction: column;
    cursor: pointer;
}

.faculty-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.faculty-image {
    width: 120px;
    height: 120px;
    background-color: var(--medium-gray);
    margin: 0 auto 1.5rem;
    border-radius: 50%;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faculty-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.faculty-image.placeholder {
    background: linear-gradient(45deg, #f1f1f1, #e2e2e2);
}

.faculty-card h3 {
    color: var(--dark-gray);
    margin-bottom: 0.75rem;
}

.faculty-card .faculty-position {
    color: var(--accent-color);
    font-size: 0.95rem;
    margin-bottom: 0.75rem;
    font-weight: 500;
}

.faculty-card .faculty-research {
    color: var(--dark-gray);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
    line-height: 1.4;
}

.faculty-card .faculty-research strong {
    color: var(--accent-color);
}

.faculty-card .btn-profile {
    margin-top: auto;
    align-self: center;
    background-color: var(--accent-color);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 500;
    transition: all var(--transition-speed) ease;
}

.faculty-card .btn-profile:hover {
    background-color: #1565c0;
    box-shadow: 0 2px 6px rgba(26, 115, 232, 0.3);
}

/* Students Section */
.student-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 2.5rem;
}

.student-card {
    padding: 1.75rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    background-color: var(--secondary-color);
    transition: all var(--transition-speed) ease;
    display: flex;
    flex-direction: column;
    cursor: pointer;
}

.student-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 15px rgba(0,0,0,0.1);
}

.student-image {
    width: 100%;
    height: 180px;
    background-color: var(--light-gray);
    margin-bottom: 1.25rem;
    border-radius: 6px;
    overflow: hidden;
}

.student-card h3 {
    margin-bottom: 0.5rem;
}

.student-card p {
    color: #555;
}

.student-card .btn-profile {
    margin-top: auto;
    align-self: flex-start;
    margin-top: 1rem;
    background-color: var(--accent-color);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 500;
    transition: all var(--transition-speed) ease;
}

.student-card .btn-profile:hover:not(.disabled) {
    background-color: #1565c0;
    box-shadow: 0 2px 6px rgba(26, 115, 232, 0.3);
}

.student-card .btn-profile.disabled {
    background-color: var(--medium-gray);
    cursor: not-allowed;
    opacity: 0.7;
}

.faculty-tag,
.student-tag {
    position: absolute;
    top: 10px;
    right: 10px;
    background-color: #007bff;
    color: white;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: bold;
    z-index: 2;
    max-width: 120px;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.faculty-card,
.student-card {
    position: relative;
}

/* Research Projects */
.research-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.research-item {
    padding: 2rem;
    border-radius: var(--border-radius);
    background-color: var(--secondary-color);
    box-shadow: var(--box-shadow);
    margin-bottom: 1.5rem;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-speed) ease;
}

.research-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 15px rgba(0,0,0,0.1);
}

.research-item:after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(to bottom, var(--accent-color), var(--accent-red));
}

.research-item h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--dark-gray);
}

.research-item p {
    margin-bottom: 1.25rem;
    line-height: 1.7;
}

.project-meta {
    margin-top: 1.5rem;
    padding-top: 1rem;
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    font-size: 0.9rem;
    color: var(--dark-gray);
    border-top: 1px solid var(--medium-gray);
}

/* Papers */
.papers-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-top: 1.5rem;
}

.paper-item {
    padding: 2rem;
    border-radius: var(--border-radius);
    background-color: var(--secondary-color);
    box-shadow: var(--box-shadow);
    transition: all var(--transition-speed) ease;
    position: relative;
    border-left: 4px solid transparent;
    background-image: linear-gradient(to bottom, var(--secondary-color), var(--secondary-color)), 
                      linear-gradient(to bottom, var(--accent-yellow), var(--accent-red));
    background-origin: border-box;
    background-clip: padding-box, border-box;
}

.paper-item:hover {
    transform: translateX(3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
}

.paper-item h3 {
    font-size: 1.3rem;
    margin-bottom: 0.75rem;
    color: var(--dark-gray);
}

.paper-item p {
    margin-bottom: 0.5rem;
    color: #555;
}

.paper-links {
    margin-top: 1.25rem;
    display: flex;
    gap: 0.75rem;
}

/* Visitors */
.visitors-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
    margin-top: 1.5rem;
}

@media (min-width: 768px) {
    .visitors-content {
        grid-template-columns: 1fr 1fr;
    }
}

.upcoming-visitors,
.past-visitors {
    background-color: var(--secondary-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--box-shadow);
}

.upcoming-visitors h3,
.past-visitors h3 {
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--medium-gray);
    font-weight: 500;
    color: var(--dark-gray);
}

.upcoming-visitors h3 {
    color: var(--accent-green);
}

.past-visitors h3 {
    color: var(--accent-red);
}

.visitors-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.visitors-list li {
    display: flex;
    gap: 1.5rem;
    padding: 1.25rem;
    background-color: var(--light-gray);
    border-radius: 6px;
    transition: all var(--transition-speed) ease;
}

.visitors-list li:hover {
    transform: translateX(5px);
    background-color: rgba(98, 0, 238, 0.05);
}

.visitor-date {
    min-width: 100px;
    font-weight: 600;
    color: var(--accent-color);
}

.visitor-details h4 {
    margin-bottom: 0.5rem;
    color: var(--dark-gray);
}

.visitor-details p {
    margin-bottom: 0.25rem;
    font-size: 0.95rem;
}

/* Events Section */
.events-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
    margin-top: 1.5rem;
}

@media (min-width: 768px) {
    .events-content {
        grid-template-columns: 1fr 1fr;
    }
}

.upcoming-events,
.past-events {
    background-color: var(--secondary-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--box-shadow);
}

.upcoming-events h3,
.past-events h3 {
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--medium-gray);
    font-weight: 500;
    color: var(--dark-gray);
}

.upcoming-events h3 {
    color: var(--accent-green);
}

.past-events h3 {
    color: var(--accent-red);
}

.events-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.events-list li {
    display: flex;
    gap: 1.5rem;
    padding: 1.25rem;
    background-color: var(--light-gray);
    border-radius: 6px;
    transition: all var(--transition-speed) ease;
}

.events-list li:hover {
    transform: translateX(5px);
    background-color: rgba(98, 0, 238, 0.05);
}

.event-date {
    min-width: 100px;
    font-weight: 600;
    color: var(--accent-color);
}

.event-details h4 {
    margin-bottom: 0.5rem;
    color: var(--dark-gray);
}

.event-details p {
    margin-bottom: 0.25rem;
    font-size: 0.95rem;
}

/* Featured Event badge in Events */
.featured-badge {
    display: inline-block;
    background-color: var(--accent-color);
    color: white;
    font-size: 0.7rem;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    margin-left: 0.5rem;
    vertical-align: middle;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.featured-talk-item {
    border-left: 4px solid var(--accent-color) !important;
}

.visitor-talk-item {
    border-left: 4px solid var(--accent-yellow) !important;
}

/* Buttons */
.btn, .btn-outline, .btn-small {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-family: var(--font-primary);
    font-weight: 500;
    font-size: 0.95rem;
    text-align: center;
    cursor: pointer;
    border-radius: 4px;
    transition: all var(--transition-speed) ease;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    border: 1px solid transparent;
    text-decoration: none;
    letter-spacing: 0.01em;
}

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

.btn:hover {
    background-color: #5000c0;
    box-shadow: 0 2px 6px rgba(98, 0, 238, 0.3);
}

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

.secondary-btn {
    background-color: white;
    color: var(--accent-color);
    border: 1px solid var(--accent-color);
}

.secondary-btn:hover {
    background-color: rgba(98, 0, 238, 0.08);
}

.btn-outline {
    background-color: transparent;
    color: var(--accent-color);
    border: 1px solid var(--accent-color);
}

.btn-outline:hover {
    background-color: rgba(98, 0, 238, 0.08);
    border-color: #5000c0;
    color: #5000c0;
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
    box-shadow: none;
    border: 1px solid var(--medium-gray);
    color: var(--dark-gray);
}

.btn-small:hover {
    background-color: var(--light-gray);
    border-color: var(--accent-color);
    color: var(--accent-color);
}

.btn.disabled, .btn-outline.disabled, .btn-small.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* Footer */
footer {
    background-color: var(--dark-gray);
    color: #f1f1f1;
    padding: 4rem 0 1.5rem;
    margin-top: 4rem;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.05);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

@media (min-width: 768px) {
    .footer-content {
        grid-template-columns: repeat(3, 1fr);
        gap: 2rem;
    }
}

.footer-logo h2 {
    color: #fff;
    font-weight: 500;
    letter-spacing: -0.5px;
    font-size: 1.8rem;
}

.footer-logo h2:after {
    display: none;
}

.footer-links h3,
.social-links h3 {
    color: #fff;
    margin-bottom: 1.25rem;
    font-size: 1.2rem;
    font-weight: 500;
}

.footer-links p {
    margin-bottom: 0.75rem;
    opacity: 0.8;
    font-size: 0.95rem;
}

.social-icons {
    display: flex;
    gap: 1.25rem;
}

.social-icon {
    color: #fff;
    font-size: 1.5rem;
    opacity: 0.8;
    transition: all var(--transition-speed) ease;
}

.social-icon:hover {
    opacity: 1;
    transform: translateY(-3px);
}

.copyright {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 1.5rem;
    text-align: center;
    font-size: 0.9rem;
    opacity: 0.7;
}

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid var(--secondary-color);
    color: var(--secondary-color);
    transition: all var(--transition-speed) ease;
}

.social-icon:hover {
    background-color: var(--secondary-color);
    color: var(--primary-color);
}

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

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Home Page Sections */
.home-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin: 3rem 0;
}

@media (min-width: 768px) {
    .home-content {
        grid-template-columns: 6fr 4fr;
    }
}

.about-us,
.featured-section {
    background-color: var(--secondary-color);
    border-radius: var(--border-radius);
    padding: 1.75rem;
    box-shadow: var(--box-shadow);
}

.about-us h3,
.featured-section h3 {
    margin-bottom: 1.25rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--medium-gray);
    color: var(--dark-gray);
}

.about-us p {
    margin-bottom: 1rem;
    line-height: 1.7;
}

.featured-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* News Section */
.news-section {
    margin: 4rem 0;
}

.news-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 768px) {
    .news-grid {
        grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    }
}

.news-card {
    background-color: var(--secondary-color);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    transition: all var(--transition-speed) ease;
    display: flex;
    flex-direction: column;
}

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

.news-image {
    height: 200px;
    background-color: var(--light-gray);
    overflow: hidden;
    position: relative;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.news-card:hover .news-image img {
    transform: scale(1.05);
}

.news-content {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.news-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.75rem;
    font-size: 0.85rem;
    color: var(--accent-color);
}

.news-category {
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.news-date {
    color: var(--dark-gray);
    opacity: 0.7;
}

.news-title {
    font-size: 1.35rem;
    margin-bottom: 1rem;
    line-height: 1.3;
}

.news-excerpt {
    color: var(--dark-gray);
    opacity: 0.85;
    margin-bottom: 1.5rem;
}

.news-actions {
    margin-top: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* News Type-Specific Styling */
.news-card.paper-news {
    border-top: 3px solid var(--accent-yellow);
}

.news-card.talk-news {
    border-top: 3px solid var(--accent-green);
}

.news-card.event-news {
    border-top: 3px solid var(--accent-red);
}

.news-card.general-news {
    border-top: 3px solid var(--accent-color);
}

/* News on Featured Section */
.featured-news-item {
    padding: 0;
    border-radius: 6px;
    background-color: var(--light-gray);
    transition: all var(--transition-speed) ease;
    border-left: 3px solid var(--accent-color);
    display: flex;
    flex-direction: column;
}

.featured-news-item:hover {
    background-color: rgba(26, 115, 232, 0.05);
    transform: translateX(5px);
}

.featured-news-image {
    width: 100%;
    height: 200px;
    flex-shrink: 0;
    border-radius: 6px 6px 0 0;
    overflow: hidden;
    background-color: var(--white);
}

.featured-news-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform 0.3s ease;
}

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

.featured-news-content {
    padding: 1rem;
    flex: 1;
}

.featured-news-item.paper-news {
    border-left-color: var(--accent-yellow);
}

.featured-news-item.talk-news {
    border-left-color: var(--accent-green);
}

.featured-news-item.event-news {
    border-left-color: var(--accent-red);
}

.featured-news-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    margin-bottom: 0.5rem;
}

.featured-news-category {
    font-weight: 600;
    color: var(--accent-color);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.featured-news-date {
    color: var(--dark-gray);
    opacity: 0.7;
}

.featured-news-title {
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
    line-height: 1.3;
    font-weight: 500;
    color: var(--dark-gray);
}

.featured-news-link {
    font-size: 0.8rem;
    color: var(--accent-color);
    margin-top: 0.5rem;
    display: inline-block;
    font-weight: 500;
    text-decoration: none;
}

.featured-news-link:hover {
    text-decoration: underline;
}

.view-all-news {
    text-align: center;
    margin-top: 1.5rem;
}

/* Featured Event Panel in News */
.news-talk-panel {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding-top: 0.75rem;
    margin-top: 0.75rem;
    border-top: 1px solid var(--medium-gray);
}

.news-talk-meta {
    font-size: 0.85rem;
    color: var(--dark-gray);
}

.news-talk-speaker {
    font-weight: 500;
    color: var(--accent-color);
}

/* Featured Paper Panel in News */
.news-paper-panel {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding-top: 0.75rem;
    margin-top: 0.75rem;
    border-top: 1px solid var(--medium-gray);
}

.news-paper-authors {
    font-size: 0.85rem;
    font-weight: 500;
}

.news-paper-venue {
    font-size: 0.85rem;
    color: var(--dark-gray);
    font-style: italic;
}

/* Faculty Profile Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: var(--secondary-color);
    margin: 2rem auto;
    padding: 0;
    border-radius: var(--border-radius);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: slideIn 0.3s ease;
    top: 50%;
    transform: translateY(-50%);
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-50%) translateY(-50px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(-50%) translateY(0) scale(1);
    }
}

.close {
    color: var(--medium-gray);
    float: right;
    font-size: 2rem;
    font-weight: bold;
    position: absolute;
    right: 1rem;
    top: 1rem;
    z-index: 2001;
    cursor: pointer;
    transition: color 0.3s ease;
}

.close:hover,
.close:focus {
    color: var(--dark-gray);
}

.modal-body {
    padding: 2rem;
    display: flex;
    gap: 2rem;
    align-items: flex-start;
}

.modal-image-section {
    flex-shrink: 0;
}

.modal-image-section img {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--light-gray);
}

.modal-info-section {
    flex: 1;
}

.modal-info-section h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--dark-gray);
    margin-bottom: 0.5rem;
}

.modal-position {
    font-size: 1.2rem;
    color: var(--accent-color);
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.modal-education,
.modal-bio,
.modal-research,
.modal-publications {
    margin-bottom: 1.5rem;
}

.modal-education h4,
.modal-bio h4,
.modal-research h4,
.modal-links h4 {
    color: var(--dark-gray);
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.modal-education p,
.modal-bio p,
.modal-research p {
    color: var(--dark-gray);
    line-height: 1.6;
}

.modal-publications button {
    background-color: var(--accent-color);
    color: var(--light-gray);
    padding: 10px;
    border: 1px solid var(--accent-color);
    border-radius: 5px;
    cursor: pointer;
}

.modal-publications button:hover {
    background-color: var(--light-gray);
    color: var(--accent-color);
    padding: 10px;
    border: 1px solid var(--accent-color);
    border-radius: 5px;
    cursor: pointer;
}

.link-buttons {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.link-buttons2 {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.link-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    text-decoration: none;
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
    background-color: var(--light-gray);
    color: var(--dark-gray);
    border: 1px solid var(--medium-gray);
}

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

.link-btn i {
    font-size: 1rem;
}

.profile-modal-research {
    font-size: 1rem;
    color: var(--dark-gray);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.profile-modal-body {
    padding: 2rem;
}

.profile-section {
    margin-bottom: 2rem;
}

.profile-section h3 {
    font-size: 1.3rem;
    color: var(--dark-gray);
    margin-bottom: 1rem;
    border-bottom: 2px solid var(--accent-color);
    padding-bottom: 0.5rem;
}

.profile-section p {
    color: var(--dark-gray);
    line-height: 1.6;
    margin-bottom: 1rem;
}

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

.profile-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background-color: var(--light-gray);
    color: var(--dark-gray);
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
    transition: all var(--transition-speed) ease;
    border: 1px solid var(--medium-gray);
}

.profile-link:hover {
    background-color: var(--accent-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(26, 115, 232, 0.3);
}

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

.profile-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--dark-gray);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-speed) ease;
}

.profile-close:hover {
    background-color: var(--light-gray);
    color: var(--accent-color);
}

/* Responsive design for profile modal */
@media (max-width: 768px) {
    .profile-modal-content {
        margin: 1rem;
        width: calc(100% - 2rem);
    }
    
    .profile-modal-header {
        flex-direction: column;
        text-align: center;
        padding: 1.5rem;
    }
    
    .profile-modal-image {
        width: 120px;
        height: 120px;
        margin: 0 auto;
    }
    
    .profile-modal-name {
        font-size: 1.5rem;
    }
    
    .profile-modal-body {
        padding: 1.5rem;
    }
    
    .profile-links {
        justify-content: center;
    }
}

/* Responsive Modal Styles */
@media (max-width: 768px) {
    .featured-news-content {
        padding: 1rem;
    }
    
    .featured-news-title {
        font-size: 0.9rem;
    }

    .modal-content {
        margin: 1rem;
        width: calc(100% - 2rem);
        max-height: calc(100vh - 2rem);
    }
    
    .modal-body {
        flex-direction: column;
        gap: 1rem;
        padding: 1.5rem;
    }
    
    .modal-image-section img {
        width: 120px;
        height: 120px;
    }
    
    .modal-info-section h2 {
        font-size: 1.5rem;
    }
    
    .link-buttons {
        flex-direction: column;
    }
    
    .link-btn {
        justify-content: center;
        width: 100%;
    }
    
    .close {
        font-size: 1.5rem;
        right: 0.5rem;
        top: 0.5rem;
    }
}

@media (max-width: 480px) {
    .modal-content {
        margin: 0.5rem;
        width: calc(100% - 1rem);
        max-height: calc(100vh - 1rem);
    }
    
    .modal-body {
        padding: 1rem;
    }
    
    .modal-image-section img {
        width: 100px;
        height: 100px;
    }
    
    .modal-info-section h2 {
        font-size: 1.3rem;
    }
    
    .modal-position {
        font-size: 1rem;
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (min-width: 768px) {
    header .container {
        display: flex;
        align-items: center;
        justify-content: space-between;
    }

    .logo {
        margin-right: 2rem;
    }

    nav {
        margin-top: 0;
    }
}

/* People Section */
.section-tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.section-tab {
    padding: 0.5rem 2rem;
    border: 2px solid #007bff;
    background: transparent;
    color: #007bff;
    border-radius: 25px;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.section-tab:hover {
    background: #007bff;
    color: white;
}

.section-tab.active {
    background: #007bff;
    color: white;
}

.people-grid {
    display: none;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    padding: 1rem;
}

.people-grid.active {
    display: grid;
}

/* Research and Papers groups styling */
.research-group,
.papers-group,
.upcoming-group,
.past-group {
    display: none;
}

.research-group.active,
.papers-group.active,
.upcoming-group.active,
.past-group.active {
    display: block;
}

/* Coming Soon styling */
.coming-soon {
    text-align: center;
    padding: 3rem 2rem;
    background: var(--light-gray);
    border-radius: 10px;
    margin: 2rem 0;
}

.coming-soon h3 {
    color: var(--primary-color);
    font-size: 2rem;
    margin-bottom: 1rem;
}

.coming-soon p {
    color: var(--dark-gray);
    font-size: 1.1rem;
}

/* Update existing card styles to work with both faculty and students */
.faculty-card,
.student-card {
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    padding: 1.5rem;
    text-align: center;
    transition: transform 0.3s ease;
    cursor: pointer;
}

.faculty-card:hover,
.student-card:hover {
    transform: translateY(-5px);
}

.faculty-image,
.student-image {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    margin: 0 auto 1rem;
    overflow: hidden;
}

.faculty-image img,
.student-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}