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

:root {
    --primary-color: #0f172a;
    --accent-color: #3b82f6;
    --accent-hover: #2563eb;
    --text-color: #1e293b;
    --text-light: #64748b;
    --text-muted: #94a3b8;
    --bg-color: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --radius: 0.5rem;
    --radius-lg: 1rem;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.7;
    color: var(--text-color);
    background-color: var(--bg-color);
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Typography */
h1, h2, h3, h4 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--primary-color);
}

p {
    color: var(--text-light);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.logo {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--primary-color);
    text-decoration: none;
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-img {
    height: 32px;
    width: auto;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-links a {
    color: var(--text-light);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
}

.nav-links a.active {
    color: var(--primary-color);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    gap: 5px;
    padding: 0.5rem;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--primary-color);
    transition: all 0.3s ease;
}

/* Banner */
.banner {
    max-width: 1140px;
    margin-left: auto;
    margin-right: auto;
    padding: 0 1.5rem;
    overflow: hidden;
}

.banner-bottom {
    margin-bottom: 3rem;
}

.banner img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: var(--radius-lg);
}

/* Hero Section */
.hero {
    margin-top: 72px;
    padding: 6rem 0;
    background-color: var(--bg-color);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: -0.03em;
}

.tagline {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    font-weight: 400;
}

.intro {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    max-width: 480px;
}

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

.hero-image {
    display: flex;
    justify-content: center;
}

.profile-placeholder {
    width: 320px;
    height: 320px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    font-weight: 700;
    color: var(--text-muted);
    border: 1px solid var(--border-color);
}

.profile-photo {
    width: 320px;
    height: 420px;
    border-radius: 160px / 210px;
    object-fit: cover;
    object-position: center top;
    border: 1px solid var(--border-color);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background-color: #1e293b;
    transform: translateY(-1px);
}

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

.btn-secondary:hover {
    background-color: var(--bg-secondary);
    border-color: var(--text-muted);
}

/* Tiles Grid */
.tiles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.tile {
    position: relative;
    padding: 2.5rem;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    text-decoration: none;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.tile .btn {
    align-self: center;
    margin-top: auto;
}

.tile::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.tile:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.tile:hover::before {
    transform: scaleX(1);
}

.tile-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-tertiary);
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.tile-image {
    width: 100%;
    height: 200px;
    margin: -2.5rem -2.5rem 1.5rem -2.5rem;
    width: calc(100% + 5rem);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    overflow: hidden;
}

.tile-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background-color: var(--bg-tertiary);
}

.tile-image-book {
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: var(--bg-tertiary);
}

.tile-image-book img {
    width: auto;
    height: 100%;
    object-fit: contain;
}

.tile-with-thumb {
    display: grid;
    grid-template-columns: 80px 1fr;
    grid-template-rows: auto auto auto auto auto;
    column-gap: 1.5rem;
}

.tile-thumb {
    grid-row: 1 / 3;
    width: 80px;
    height: 110px;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.tile-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.tile-with-thumb h3,
.tile-with-thumb p {
    grid-column: 2;
}

.tile-with-thumb .tile-tags,
.tile-with-thumb .tile-promo,
.tile-with-thumb .btn {
    grid-column: 1 / -1;
}

.tile h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--primary-color);
}

.tile p {
    font-size: 0.9375rem;
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.tile-link {
    display: inline-flex;
    align-items: center;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--primary-color);
}

.tile-link::after {
    content: ' \2192';
    margin-left: 0.5rem;
    transition: transform 0.2s ease;
}

.tile:hover .tile-link::after {
    transform: translateX(4px);
}

.tile-large {
    grid-column: span 2;
}

.tile-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.tile-tag {
    display: inline-block;
    padding: 0.375rem 0.75rem;
    background-color: var(--bg-tertiary);
    border-radius: 2rem;
    font-size: 0.8125rem;
    color: var(--text-light);
}

.tile-promo {
    display: flex;
    align-items: baseline;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background-color: var(--bg-tertiary);
    border-radius: var(--radius);
}

.tile-promo .promo-code {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--accent-color);
    font-family: monospace;
}

.tile-promo .promo-detail {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.promo-compact {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.promo-compact strong {
    color: var(--accent-color);
    font-family: monospace;
}

.tile-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.tile-list span {
    font-size: 0.875rem;
    color: var(--text-light);
    padding-left: 1rem;
    position: relative;
}

.tile-list span::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.5em;
    width: 4px;
    height: 4px;
    background-color: var(--accent-color);
    border-radius: 50%;
}

/* Sections */
.section {
    padding: 6rem 0;
}

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

.section-title {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.section-intro {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 3rem;
    max-width: 600px;
}

.section-title-link {
    text-decoration: none;
    display: inline-block;
}

.section-title-link:hover .section-title {
    color: var(--primary-color);
}

.section-title-link .section-title::after {
    content: ' \2192';
    font-size: 1.5rem;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.section-title-link:hover .section-title::after {
    opacity: 1;
}

.news-more {
    margin-top: 2.5rem;
    text-align: center;
}

/* About Section */
.about-content {
    width: 100%;
}

.about-content > p {
    font-size: 1.0625rem;
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.about-subtitle {
    font-size: 1.125rem;
    font-weight: 600;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.media-list {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem 2rem;
}

.media-list li {
    font-size: 0.9375rem;
    color: var(--text-light);
    position: relative;
    padding-left: 1rem;
}

.media-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.5em;
    width: 4px;
    height: 4px;
    background-color: var(--accent-color);
    border-radius: 50%;
}

.affiliations {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.affiliations h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.affiliation-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.affiliation-list li {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
}

.affiliation-role {
    font-weight: 500;
    color: var(--text-color);
}

.affiliation-org {
    color: var(--text-muted);
}

/* Media Grid */
.media-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.media-item {
    padding: 1.5rem;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    text-decoration: none;
    transition: all 0.2s ease;
}

.media-item:hover {
    border-color: var(--text-muted);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.media-item h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.media-item p {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.service-card {
    padding: 2rem;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all 0.2s ease;
}

.service-card:hover {
    border-color: var(--text-muted);
    background-color: var(--bg-color);
}

.service-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-tertiary);
    border-radius: var(--radius);
    margin-bottom: 1.25rem;
    color: var(--primary-color);
}

.service-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.service-card p {
    font-size: 0.9375rem;
    color: var(--text-light);
    line-height: 1.6;
}

/* Book Section */
.book-content {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 4rem;
    align-items: start;
}

.book-placeholder {
    width: 100%;
    aspect-ratio: 2/3;
    background: linear-gradient(135deg, var(--primary-color) 0%, #334155 100%);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    box-shadow: var(--shadow-lg);
}

.book-placeholder span {
    color: white;
    font-size: 1.5rem;
    font-weight: 600;
    text-align: center;
    line-height: 1.3;
}

.book-description {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.book-topics h3 {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.topics-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.topic-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 2rem;
    font-size: 0.875rem;
    color: var(--text-color);
}

.book-promo {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.promo-box {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.promo-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.promo-code {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent-color);
    font-family: monospace;
}

.promo-detail {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

/* Newsletter Section */
.newsletter-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, #334155 100%);
    color: white;
}

.newsletter-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.newsletter-content h2 {
    color: white;
    font-size: 2rem;
    margin-bottom: 1rem;
}

.newsletter-content p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2rem;
    font-size: 1.0625rem;
}

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

.newsletter-section .btn-primary:hover {
    background-color: var(--bg-secondary);
}

/* News Grid */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.news-item {
    padding: 2rem;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all 0.2s ease;
}

.news-item:hover {
    border-color: var(--text-muted);
}

.news-date {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--accent-color);
    margin-bottom: 0.75rem;
}

.news-item h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.news-item p {
    font-size: 0.9375rem;
    color: var(--text-light);
    margin-bottom: 1rem;
}

.news-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--primary-color);
    text-decoration: none;
}

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

/* Contact Section */
.contact-content {
    max-width: 800px;
    margin: 0 auto;
}

.contact-intro {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 2.5rem;
    text-align: center;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.contact-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    text-decoration: none;
    transition: all 0.2s ease;
    text-align: center;
}

.contact-card:hover {
    border-color: var(--text-muted);
    background-color: var(--bg-color);
    transform: translateY(-2px);
}

.contact-card svg {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.contact-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.contact-value {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--primary-color);
}

/* Page Header (for subpages) */
.page-header {
    padding: 10rem 0 4rem;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.page-header h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.03em;
}

.page-header p {
    font-size: 1.125rem;
    color: var(--text-muted);
}

/* News Page */
.news-page {
    padding: 4rem 0;
}

.news-list {
    max-width: 800px;
}

.news-entry {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 2rem;
    padding: 2rem 0;
    border-bottom: 1px solid var(--border-color);
}

.news-entry:first-child {
    padding-top: 0;
}

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

.news-entry-date {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
    padding-top: 0.25rem;
}

.news-entry-content h2 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.news-entry-content h2 a {
    color: var(--primary-color);
    text-decoration: none;
}

.news-entry-content h2 a:hover {
    text-decoration: underline;
}

.news-entry-content p {
    font-size: 0.9375rem;
    color: var(--text-light);
    margin-bottom: 0.75rem;
    line-height: 1.6;
}

.news-entry-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--accent-color);
    text-decoration: none;
}

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

/* News Labels */
.news-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.25rem 0.625rem;
    border-radius: 4px;
    margin-bottom: 0.5rem;
}

.news-label-media {
    background-color: #dbeafe;
    color: #1e40af;
}

.news-label-lezingen {
    background-color: #fef3c7;
    color: #92400e;
}

/* News Filters */
.news-filters {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-light);
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.2s ease;
}

.filter-btn:hover {
    background-color: var(--bg-secondary);
    color: var(--text-color);
}

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

/* Footer */
.footer {
    background-color: var(--primary-color);
    color: rgba(255, 255, 255, 0.7);
    text-align: center;
    padding: 2rem 0;
}

.footer p {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out forwards;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-text {
        order: 2;
    }

    .hero-image {
        order: 1;
    }

    .intro {
        max-width: 100%;
    }

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

    .profile-placeholder {
        width: 200px;
        height: 200px;
        font-size: 3rem;
    }

    .profile-photo {
        width: 180px;
        height: 230px;
        border-radius: 90px / 115px;
    }

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

    .book-image {
        max-width: 250px;
        margin: 0 auto;
    }

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

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

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

    .banner {
        max-height: 200px;
    }

    .tile-with-thumb {
        grid-template-columns: 1fr;
    }

    .tile-thumb {
        grid-row: auto;
        margin-bottom: 1rem;
    }

    .tile-with-thumb h3,
    .tile-with-thumb p,
    .tile-with-thumb .tile-tags,
    .tile-with-thumb .tile-promo,
    .tile-with-thumb .btn {
        grid-column: 1;
    }

    .tile-large {
        grid-column: span 1;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        flex-direction: column;
        background-color: var(--bg-color);
        padding: 1.5rem;
        gap: 0;
        border-bottom: 1px solid var(--border-color);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }

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

    .nav-links li {
        border-bottom: 1px solid var(--border-color);
    }

    .nav-links li:last-child {
        border-bottom: none;
    }

    .nav-links a {
        display: block;
        padding: 1rem 0;
    }

    .nav-toggle {
        display: flex;
    }

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

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

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .hero {
        padding: 8rem 0 4rem;
    }

    .hero-text h1 {
        font-size: 2.5rem;
    }

    .tagline {
        font-size: 0.875rem;
    }

    .section {
        padding: 4rem 0;
    }

    .section-title {
        font-size: 1.75rem;
    }

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

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

    .affiliation-list li {
        flex-direction: column;
        gap: 0.25rem;
    }

    .tile {
        padding: 1.5rem;
    }
}

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

    .hero-text h1 {
        font-size: 2rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .profile-placeholder {
        width: 160px;
        height: 160px;
        font-size: 2.5rem;
    }

    .book-promo {
        flex-direction: column;
        align-items: flex-start;
    }

    .book-promo .btn {
        width: 100%;
    }

    .news-entry {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }

    .page-header {
        padding: 8rem 0 3rem;
    }

    .page-header h1 {
        font-size: 2rem;
    }
}