/* General Styles */
html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: #333;
    font-size: 16px;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Roboto Condensed', -apple-system, BlinkMacSystemFont, 'Segoe UI', Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    font-weight: 700;
}

.highlight {
    font-weight: 500;
}

.section {
    padding: 80px 0;
    display: flex;
    align-items: center;
}

/* Navigation */
#navigation {
    padding: 40px 0;
    background-color: #fff;
}

.navbar-nav {
    gap: 2rem;
    margin: 0;
    padding: 0;
    justify-content: flex-start;
}

.nav-item {
    list-style: none;
}

.nav-link,
.footer-nav .scroll-link {
    font-weight: 500;
    padding: 0.5rem 1rem 0.5rem 0;
    transition: all 0.3s ease;
    position: relative;
    color: #333;
    text-decoration: none;
    display: block;
}

.nav-link:hover,
.footer-nav .scroll-link:hover {
    color: #007bff;
}

/* Home Section */
#home {
    background-color: #fff;
    background-image: url('images/hero-bg.svg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
}

#home::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.95) 0%, rgba(0,123,255,0.1) 100%);
    z-index: 1;
}

#home .container {
    position: relative;
    z-index: 2;
}

#home .lead {
    margin-right: 2em;
}

.profile-image {
    text-align: center;
    margin-bottom: 2rem;
}

.profile-image img {
    max-width: 500px;
    width: 100%;
    height: auto;
    aspect-ratio: 1;
    object-fit: cover;
    border: 5px solid #fff;
    box-shadow: 0 0 20px rgba(0,0,0,0.1);
}

.social-icon {
    font-size: 2.5rem;
    color: #666;
    margin: 0 1rem 0 0;
    transition: color 0.3s ease;
}

.social-icon:hover {
    color: #007bff;
}

/* Quotes Section */
.quotes-section {
    margin: 0;
    padding: 2rem 0;
    background-color: #e9ecef;
    box-shadow: 0 0 20px rgba(0,0,0,0.05);
    width: 100%;
    height: 12.5em;
    display: flex;
    align-items: center;
    justify-content: center;
}

.quote {
    font-style: italic;
    font-size: 1.2em;
    color: #666;
    margin: 0;
    opacity: 0;
    transform: translateY(20px);
    text-align: center;
    width: 100%;
}

.quote-text {
    margin-bottom: 0.5em;
}

.quote-attribution {
    text-align: center;
    font-size: 0.9em;
    color: #888;
}

/* Media Section */
#media {
    background-image: url('images/hero-bg.svg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
}

#media::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.95) 0%, rgba(0,123,255,0.1) 100%);
    z-index: 1;
}

#media .container {
    position: relative;
    z-index: 2;
}

/* Media Section Styles */
.media-intro {
    margin-bottom: 3rem;
    font-size: 1.1em;
    line-height: 1.8;
}

.books-section {
    margin-bottom: 4rem;
}

.books-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.book-item {
    transition: transform 0.3s ease;
}

.book-item:hover {
    transform: translateY(-5px);
}

.book-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.book-link img {
    width: 100%;
    height: auto;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: box-shadow 0.3s ease;
}

.book-link:hover img {
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.book-info {
    margin-top: 1rem;
}

.book-info h4 {
    font-size: 1.1em;
    margin-bottom: 0.5rem;
    color: #333;
}

.book-info p {
    font-size: 0.9em;
    color: #666;
    margin-bottom: 0.25rem;
}

.book-year {
    font-size: 0.85em;
    color: #888;
}

.media-mentions {
    margin-bottom: 4rem;
}

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

.media-item {
    border-left: 3px solid #007bff;
    padding-left: 1rem;
    transition: border-color 0.3s ease;
}

.media-item:hover {
    border-color: #0056b3;
}

.media-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.media-title {
    display: block;
    font-weight: 500;
    color: #333;
    margin-bottom: 0.5rem;
}

.media-author {
    display: block;
    font-size: 0.9em;
    color: #666;
}

.media-date {
    display: block;
    font-size: 0.85em;
    color: #888;
    margin-top: 0.25rem;
}

.media-source {
    display: block;
    font-size: 0.9em;
    color: #007bff;
    margin-top: 0.5rem;
}

.conferences-section {
    margin-bottom: 3rem;
}

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

.conference-item {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 4px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.conference-item:hover {
    transform: translateX(5px);
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.conference-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.conference-title {
    display: block;
    font-weight: 500;
    color: #333;
    margin-bottom: 0.5rem;
}

.conference-org {
    display: block;
    font-size: 0.9em;
    color: #666;
}

/* Research Section */
#research {
    background-image: url('images/hero-bg.svg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
}

#research::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.95) 0%, rgba(0,123,255,0.1) 100%);
    z-index: 1;
}

#research .container {
    position: relative;
    z-index: 2;
}

/* Contact Section */
#contact {
    background-image: url('images/hero-bg.svg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.95) 0%, rgba(0,123,255,0.1) 100%);
    z-index: 1;
}

#contact .container {
    position: relative;
    z-index: 2;
}

.form-control {
    border: 1px solid #ddd;
    padding: 0.8rem;
    margin-bottom: 1rem;
}

.form-control:focus {
    border-color: #007bff;
    box-shadow: 0 0 0 0.2rem rgba(0,123,255,0.25);
}

.btn-primary {
    padding: 0.8rem 2rem;
    font-weight: 500;
}

/* Footer */
.footer {
    background-color: #e9ecef;
    padding: 3rem 0;
    border-top: 1px solid #dee2e6;
}

.footer-photo {
    text-align: center;
}

.footer-photo img {
    max-width: 240px;
    width: 100%;
    height: auto;
    aspect-ratio: 1;
    object-fit: cover;
    border: 5px solid #fff;
    box-shadow: 0 0 20px rgba(0,0,0,0.1);
}

.footer-nav {
    list-style: none;
    padding: 0;
    margin: 0;
    text-align: center;
}

.footer-nav li {
    margin: 0.5rem 0;
}

.footer-nav a {
    color: #333;
    text-decoration: none;
    transition: color 0.3s ease;
    font-weight: 500;
}

.footer-nav a:hover {
    color: #007bff;
}

.footer-right {
    text-align: left;
}

.footer-right .social-icons {
    margin-bottom: 1rem;
    padding-left: 0;
}

.footer-right .social-icon {
    font-size: 2.6rem;
    margin-right: 1rem;
    margin-left: 0;
}

.vcard-link {
    display: inline-block;
    color: #333;
    text-decoration: none;
    transition: color 0.3s ease;
    font-weight: 500;
    font-size: 1.1em;
}

.vcard-link i {
    margin-right: 0.5rem;
    font-size: 1.2em;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .section {
        padding: 60px 0;
    }
    
    .profile-image img {
        max-width: 200px;
    }
    
    .social-icon {
        font-size: 1rem;
    }
    
    .footer {
        text-align: center;
        padding: 2rem 0;
    }
    
    .footer-right {
        text-align: center;
        margin-top: 2rem;
    }
    
    .footer-right .social-icon {
        margin: 0 0.5rem;
    }
    
    .footer-nav {
        margin: 2rem 0;
    }

    .books-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 1.5rem;
    }

    .media-item {
        padding-left: 0.75rem;
    }

    .conference-item {
        padding: 1rem;
    }
}