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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #e5e5e5;
    background-color: #1a1a1a;
    font-size: 16px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    border-bottom: 1px solid #333;
}

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

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

.nav-link {
    text-decoration: none;
    color: #e5e5e5;
    font-weight: 400;
    font-size: 0.95rem;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #20c997;
}

.nav-link.active {
    color: #20c997;
    font-weight: 500;
}


/* Main Content */
.main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    padding-top: 6rem;
}

/* Header Section */
.header {
    text-align: center;
    margin-bottom: 4rem;
    padding: 2rem 0;
}

.name {
    font-size: 3rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.affiliation {
    font-size: 1.2rem;
    color: #20c997;
    margin-bottom: 2rem;
    font-weight: 400;
}

.motto {
    font-style: italic;
    font-size: 1.1rem;
    color: #b0b0b0;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.7;
    border: none;
    padding: 0;
}

/* About Section */
.about {
    margin-bottom: 4rem;
}

.about-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-text p {
    font-size: 1rem;
    color: #b0b0b0;
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.collaborate {
    margin: 2rem 0;
    padding: 1rem;
    background: #2a2a2a;
    border-radius: 8px;
    border-left: 4px solid #20c997;
}

.collaborate strong {
    color: #20c997;
}

.bio {
    margin-top: 1.5rem;
}

.bio strong {
    color: #20c997;
}

.link {
    color: #20c997;
    text-decoration: none;
    transition: color 0.3s ease;
}

.link:hover {
    color: #17a085;
}

/* About Image */
.about-image {
    text-align: center;
}

.profile-image {
    width: 250px;
    height: 250px;
    border-radius: 12px;
    margin: 0 auto 1.5rem;
    overflow: hidden;
    border: 2px solid #444;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

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

.profile-placeholder {
    width: 100%;
    height: 100%;
    background: #333;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: #666;
}

.location {
    margin-bottom: 1.5rem;
}

.location p {
    color: #b0b0b0;
    font-size: 0.9rem;
}

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

.social-link {
    width: 40px;
    height: 40px;
    background: #2a2a2a;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #20c997;
    text-decoration: none;
    transition: all 0.3s ease;
    border: 1px solid #444;
}

.social-link:hover {
    background: #20c997;
    color: #1a1a1a;
    transform: translateY(-2px);
}

/* Section Styles */
section {
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 2rem;
    text-transform: lowercase;
}

/* News Section */
.news-list {
    max-width: 800px;
}

.news-item {
    display: flex;
    gap: 2rem;
    margin-bottom: 1.5rem;
    padding: 1rem 0;
    border-bottom: 1px solid #333;
}

.news-item:last-child {
    border-bottom: none;
}

.news-date {
    color: #20c997;
    font-weight: 500;
    min-width: 80px;
    font-size: 0.9rem;
}

.news-content {
    color: #b0b0b0;
    line-height: 1.6;
    flex: 1;
}

.news-content .link {
    color: #20c997;
    text-decoration: none;
    transition: color 0.3s ease;
}

.news-content .link:hover {
    color: #17a085;
}

/* Research Section */
.research-content {
    max-width: 800px;
}

.research-content p {
    color: #b0b0b0;
    margin-bottom: 2rem;
    line-height: 1.7;
}

.research-areas h3 {
    color: #ffffff;
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

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

.research-areas li {
    color: #b0b0b0;
    margin-bottom: 0.5rem;
    padding-left: 1rem;
    position: relative;
}

.research-areas li::before {
    content: "•";
    color: #20c997;
    position: absolute;
    left: 0;
}

/* Publications */
.publications {
    margin-top: 2rem;
}

.publications h3 {
    color: #ffffff;
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

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

.publications li {
    color: #b0b0b0;
    margin-bottom: 1rem;
    padding-left: 1rem;
    position: relative;
    line-height: 1.6;
}

.publications li::before {
    content: "•";
    color: #20c997;
    position: absolute;
    left: 0;
}

.publications em {
    color: #20c997;
    font-style: italic;
}

/* Misc Section */
.misc-content {
    max-width: 800px;
}

.misc-content p {
    color: #b0b0b0;
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.misc-links {
    color: #b0b0b0;
    margin-bottom: 1.5rem;
}

.misc-links .link {
    color: #20c997;
    text-decoration: none;
    transition: color 0.3s ease;
}

.misc-links .link:hover {
    color: #17a085;
}

.contact-info {
    background: #2a2a2a;
    padding: 1rem;
    border-radius: 8px;
    border-left: 4px solid #20c997;
}

.contact-info p {
    margin-bottom: 0.5rem;
    color: #b0b0b0;
}

.contact-info strong {
    color: #20c997;
}

/* Doodles Gallery */
.doodles-section {
    margin-top: 3rem;
}

.doodles-section h3 {
    color: #ffffff;
    font-size: 1.5rem;
    margin-bottom: 1rem;
    text-align: center;
}

.doodles-section p {
    color: #b0b0b0;
    text-align: center;
    margin-bottom: 2rem;
}

.doodles-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
    margin-top: 2rem;
}

.doodle-item {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    background: #2a2a2a;
    border: 2px solid #444;
}

.doodle-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(32, 201, 151, 0.2);
}

.doodle-item img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    object-position: center;
    transition: transform 0.3s ease;
}

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

.doodle-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(32, 201, 151, 0.1), rgba(32, 201, 151, 0.05));
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1;
}

.doodle-item:hover::before {
    opacity: 1;
}

/* Scholar Stats */
.scholar-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.stat {
    background: #2a2a2a;
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    border-left: 4px solid #20c997;
}

.stat strong {
    display: block;
    font-size: 1.5rem;
    color: #20c997;
    margin-bottom: 0.25rem;
}

/* Publication List */
.publication-list {
    margin-top: 1.5rem;
}

.publication-item {
    background: #2a2a2a;
    padding: 1.5rem;
    margin-bottom: 1rem;
    border-radius: 8px;
    border-left: 4px solid #20c997;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.publication-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(32, 201, 151, 0.1);
}

.pub-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.pub-authors {
    color: #b0b0b0;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.pub-authors strong {
    color: #20c997;
}

.pub-venue {
    color: #20c997;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    font-style: italic;
}

.pub-citations {
    color: #888;
    font-size: 0.85rem;
    font-weight: 500;
}

.scholar-link {
    margin-top: 2rem;
    text-align: center;
    padding: 1rem;
    background: #1a1a1a;
    border-radius: 8px;
    border: 1px solid #333;
}

.scholar-link p {
    margin: 0;
    color: #b0b0b0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .main-content {
        padding: 0 1rem;
        padding-top: 5rem;
    }
    
    .nav-container {
        padding: 0 1rem;
    }
    
    .nav-menu {
        gap: 1rem;
    }
    
    .name {
        font-size: 2.5rem;
    }
    
    .affiliation {
        font-size: 1.1rem;
    }
    
    .motto {
        font-size: 1rem;
    }
    
    .about-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .news-item {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .news-date {
        min-width: auto;
    }
    
    .profile-image {
        width: 180px;
        height: 180px;
        font-size: 3rem;
    }
    
    .doodles-gallery {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 0.75rem;
    }
    
    .doodle-item img {
        height: 150px;
    }
}

@media (max-width: 480px) {
    .name {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .nav-menu {
        gap: 0.5rem;
    }
    
    .nav-link {
        font-size: 0.9rem;
    }
}