:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --light-color: #ecf0f1;
    --dark-color: #2c3e50;
    --text-color: #333;
    --text-light: #f8f9fa;
    --font-main: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --transition: all 0.3s ease;
}

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

body {
    font-family: var(--font-main);
    line-height: 1.6;
    color: var(--text-color);
    background-color: #f8f9fa;
    overflow-x: hidden;
}

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

a:hover {
    color: var(--accent-color);
}

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

/* Accessibility: Skip link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--secondary-color);
    color: white;
    padding: 8px;
    z-index: 1001;
    transition: top 0.3s;
}

.skip-link:focus {
    top: 0;
}

/* Header */
header {
    background-color: var(--primary-color);
    color: white;
    padding: 20px 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: relative;
    z-index: 1000;
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 2rem;
    font-weight: bold;
    color: var(--light-color);
    display: flex;
    align-items: center;
}

.logo img {
    height: 50px;
    margin-right: 15px;
}

.logo span {
    color: var(--secondary-color);
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 10px;
}

/* Navigation */
nav {
    display: flex;
    justify-content: space-between;
    margin-top: 20px;
}

.nav-main, .nav-locations {
    display: flex;
    list-style: none;
    padding: 0;
}

.nav-main li, .nav-locations li {
    margin-right: 20px;
}

.nav-main a, .nav-locations a {
    color: var(--light-color);
    font-weight: 500;
    padding: 5px;
    transition: var(--transition);
}

.nav-main a:hover, .nav-locations a:hover {
    color: var(--secondary-color);
}

.nav-main a.active, .nav-locations a.active {
    color: var(--secondary-color);
    border-bottom: 2px solid var(--secondary-color);
}

.nav-locations {
    border-left: 1px solid var(--light-color);
    padding-left: 20px;
}

/* Hero Section */
.hero, .page-hero {
    background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('/api/placeholder/1200/600') no-repeat center center/cover;
    color: var(--light-color);
    padding: 100px 0;
    text-align: center;
}

.hero h1, .page-hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto 30px;
}

.breadcrumb {
    display: flex;
    justify-content: center;
    list-style: none;
    font-size: 0.9rem;
    padding: 0;
}

.breadcrumb li {
    margin: 0 5px;
}

.breadcrumb li::after {
    content: '/';
    margin-left: 10px;
    color: rgba(255, 255, 255, 0.5);
}

.breadcrumb li:last-child::after {
    content: '';
}

.breadcrumb a {
    color: var(--light-color);
}

.btn {
    display: inline-block;
    padding: 12px 25px;
    background-color: var(--secondary-color);
    color: white;
    border-radius: 5px;
    font-weight: bold;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.btn:hover {
    background-color: var(--accent-color);
    color: white;
    transform: translateY(-3px);
}

/* Section Common */
section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
    position: relative;
}

.section-title h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    display: inline-block;
    padding-bottom: 10px;
}

.section-title h2::after {
    content: '';
    position: absolute;
    width: 50px;
    height: 3px;
    background-color: var(--secondary-color);
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
}

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

/* Footer */
footer {
    background-color: var(--dark-color);
    color: var(--light-color);
    padding: 60px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.footer-col h3 {
    margin-bottom: 20px;
    color: var(--secondary-color);
}

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

.footer-links li {
    margin-bottom: 10px;
}

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

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

.social-links {
    display: flex;
    margin-top: 20px;
}

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: center;
    align-items: center;
    margin-right: 10px;
    transition: var(--transition);
    color: white;
}

.social-links a:hover {
    background-color: var(--secondary-color);
    transform: translateY(-5px);
}

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Utilities */
.text-center { text-align: center; }
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Page Specific Blocks */

/* About Section */
.about-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

.about-text {
    flex: 1;
    padding: 20px;
    min-width: 300px;
}

.about-text h3 {
    margin-bottom: 20px;
    color: var(--primary-color);
}

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}

.service-card {
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

.service-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.service-content {
    padding: 20px;
}

.service-content h3 {
    margin-bottom: 10px;
    color: var(--primary-color);
}

/* Values Grid */
.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 30px;
}

.value-card {
    text-align: center;
    padding: 30px;
    border-radius: 8px;
    background-color: white;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.value-card:hover {
    transform: translateY(-5px);
}

.value-card i {
    font-size: 3rem;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.value-card h3 {
    margin-bottom: 15px;
    color: var(--primary-color);
}

/* Research Section */
.research-menu {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.research-menu a {
    margin: 0 15px 15px;
    padding: 10px 20px;
    background-color: white;
    border-radius: 50px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.research-menu a:hover, .research-menu a.active {
    background-color: var(--secondary-color);
    color: white;
}

.research-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.research-card {
    background-color: white;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    text-align: center;
}

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

.research-card i {
    font-size: 3rem;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

/* Contact Grid */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.contact-info {
    background-color: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.contact-info h3 {
    margin-bottom: 20px;
    color: var(--primary-color);
}

.contact-info p {
    margin-bottom: 10px;
    display: flex;
    align-items: center;
}

.contact-info i {
    margin-right: 10px;
    color: var(--secondary-color);
    width: 20px;
}

.contact-form {
    background-color: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.contact-form h3 {
    margin-bottom: 20px;
    color: var(--primary-color);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-family: var(--font-main);
}

.form-group textarea {
    height: 150px;
    resize: vertical;
}

/* Events */
.events-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.event-card {
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.event-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

.event-img {
    height: 200px;
    background-size: cover;
    background-position: center;
    position: relative;
}

.event-date {
    position: absolute;
    top: 20px;
    left: 20px;
    background-color: var(--secondary-color);
    color: white;
    padding: 10px;
    border-radius: 5px;
    text-align: center;
    font-weight: bold;
    min-width: 60px;
}

.event-date span {
    display: block;
    font-size: 1.2rem;
}

.event-content {
    padding: 25px;
}

.event-meta {
    display: flex;
    align-items: center;
    color: #888;
    font-size: 0.85rem;
    margin-bottom: 15px;
}

.event-meta span {
    margin-right: 15px;
}

/* Newsletter */
.newsletter {
    padding: 60px 0;
    background-color: var(--primary-color);
    color: white;
    text-align: center;
}

.newsletter-form {
    display: flex;
    justify-content: center;
    max-width: 600px;
    margin: 20px auto 0;
}

.newsletter-form input {
    flex: 1;
    padding: 15px;
    border: none;
    border-radius: 5px 0 0 5px;
}

.newsletter-form button {
    padding: 0 30px;
    background-color: var(--secondary-color);
    color: white;
    border: none;
    border-radius: 0 5px 5px 0;
    font-weight: bold;
}

/* Gallery */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.gallery-item {
    position: relative;
    height: 250px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    display: block;
}

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

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(44, 62, 80, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: var(--transition);
    color: white;
    text-align: center;
    padding: 20px;
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

/* Videos */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(450px, 1fr));
    gap: 30px;
}

.video-card {
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.video-placeholder {
    height: 250px;
    background-color: #000;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.video-placeholder i {
    font-size: 4rem;
    color: white;
}

/* FAQ */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

details {
    background-color: white;
    margin-bottom: 15px;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    overflow: hidden;
}

summary {
    padding: 20px;
    font-weight: bold;
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--primary-color);
}

summary::after {
    content: '+';
    font-size: 1.5rem;
    transition: transform 0.3s;
}

details[open] summary::after {
    transform: rotate(45deg);
}

.faq-content {
    padding: 0 20px 20px;
    border-top: 1px solid var(--light-color);
    padding-top: 15px;
}

/* Responsive */
@media (max-width: 992px) {
    .about-content {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    .mobile-toggle {
        display: block;
    }

    nav {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--primary-color);
        padding: 20px;
        z-index: 999;
    }

    nav.active {
        display: flex;
    }

    .nav-main, .nav-locations {
        flex-direction: column;
    }

    .nav-main li, .nav-locations li {
        margin: 10px 0;
    }

    .nav-locations {
        border-left: none;
        padding-left: 0;
        margin-top: 20px;
        padding-top: 20px;
        border-top: 1px solid var(--light-color);
    }

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

    .newsletter-form {
        flex-direction: column;
        padding: 0 20px;
    }

    .newsletter-form input {
        border-radius: 5px;
        margin-bottom: 10px;
    }

    .newsletter-form button {
        padding: 15px;
        border-radius: 5px;
    }

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

@media (max-width: 576px) {
    .hero h1, .page-hero h1 {
        font-size: 2rem;
    }

    .section-title h2 {
        font-size: 2rem;
    }
}