/* Main Content Styles */
.main-content {
    margin-top: 12rem;
    /* Account for fixed header */
    padding: var(--space-lg);
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
}

/* Hero Section */
.hero {
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)),
        url('../assets/images/overview.png') center/cover no-repeat;
    height: 40vh;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--light-color);
    text-align: center;
    margin-bottom: var(--space-xl);
    border-radius: 8px;
}

.hero__content {
    max-width: 800px;
    padding: var(--space-md);
}

.hero__title {
    font-family: var(--font-heading);
    font-size: 4rem;
    margin-bottom: var(--space-sm);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero__subtitle {
    font-size: 2rem;
    font-weight: 300;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}
/* Page Navigation */
.page-nav {
    background-color: var(--gray-color);
    border-radius: 8px;
    padding: var(--space-md);
    margin-bottom: var(--space-xl);
    position: relative;
}

.page-nav__toggle {
    display: none;
    background: none;
    border: none;
    font-family: var(--font-body);
    font-size: 1.6rem;
    color: var(--secondary-color);
    cursor: pointer;
    width: 100%;
    text-align: left;
    padding: var(--space-sm) 0;
}

.page-nav__toggle span:first-child {
    font-weight: 500;
}

.page-nav__toggle .material-symbols-outlined {
    float: right;
    transition: var(--transition-normal);
}

.page-nav__menu {
    display: flex;
    overflow-x: auto;
    overflow-y: hidden;
    gap: var(--space-md);
    list-style: none;
    margin: 0;
    padding: 0;
    scrollbar-width: thin;
    scrollbar-color: var(--primary-color) var(--gray-color);
    white-space: nowrap;
}

/* Custom scrollbar for WebKit browsers */
.page-nav__menu::-webkit-scrollbar {
    height: 6px;
}

.page-nav__menu::-webkit-scrollbar-track {
    background: var(--gray-color);
    border-radius: 4px;
}

.page-nav__menu::-webkit-scrollbar-thumb {
    background-color: var(--primary-color);
    border-radius: 4px;
}

.page-nav__item {
    flex: 0 0 auto;
}

.page-nav__link {
    display: inline-block;
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 500;
    padding: var(--space-xs) 0;
    position: relative;
    transition: var(--transition-fast);
    white-space: nowrap;
}

.page-nav__link:hover {
    color: var(--primary-color);
}

.page-nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition-fast);
}

.page-nav__link:hover::after {
    width: 100%;
}
/* Content Sections */
.content-section {
    margin-bottom: var(--space-xl);
}

.section-title {
    font-family: var(--font-heading);
    color: var(--secondary-color);
    font-size: 2.8rem;
    margin-bottom: var(--space-md);
    position: relative;
    padding-bottom: var(--space-xs);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80px;
    height: 3px;
    background-color: var(--primary-color);
}

.section-content {
    line-height: var(--line-height-base);
    color: var(--text-color);
}

.section-content p {
    margin-bottom: var(--space-md);
}

/* Dual Column Section */
.dual-column-section {
    display: flex;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.column {
    flex: 1;
}

.column-divider {
    width: 1px;
    background-color: rgba(0, 0, 0, 0.1);
}

/* With Image Section */
.with-image {
    display: flex;
    gap: var(--space-xl);
    align-items: center;
}

.with-image .text-content {
    flex: 2;
}

.with-image .image-content {
    flex: 1;
    text-align: center;
}

.with-image img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: var(--shadow-md);
}

/* Requirements List */
.requirements {
    background-color: var(--gray-color);
    padding: var(--space-md);
    border-radius: 8px;
    margin-top: var(--space-lg);
}

.subsection-title {
    font-size: 2rem;
    color: var(--secondary-color);
    margin-bottom: var(--space-md);
}

.requirements-list {
    padding-left: var(--space-md);
    margin-bottom: var(--space-md);
}

.requirements-list li {
    margin-bottom: var(--space-sm);
    position: relative;
}

.requirements-list li::before {
    content: '';
    position: absolute;
    left: -20px;
    top: 0.8em;
    width: 8px;
    height: 8px;
    background-color: var(--primary-color);
    border-radius: 50%;
}

.note {
    font-style: italic;
    color: var(--text-light);
}

/* Lab Grid */
.lab-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.lab-card {
    background-color: var(--light-color);
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    padding: var(--space-md);
    text-align: center;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.lab-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.lab-card .material-symbols-outlined {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: var(--space-sm);
}

.lab-card h3 {
    font-size: 1.8rem;
    color: var(--secondary-color);
    margin: 0;
}

/* Full Width Section */
.full-width-section {
    background-color: var(--secondary-color);
    color: var(--light-color);
    padding: var(--space-xl) var(--space-lg);
    margin: var(--space-xl) calc(var(--space-lg) * -1);
    text-align: center;
}

.centered-content {
    max-width: 800px;
    margin: 0 auto;
}

.full-width-section .section-title {
    color: var(--light-color);
}

.full-width-section .section-title::after {
    background-color: var(--primary-color);
}

.tour-button {
    background-color: var(--primary-color);
    color: var(--light-color);
    border: none;
    padding: var(--space-sm) var(--space-lg);
    font-size: 1.6rem;
    font-weight: 500;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition-normal);
    margin-top: var(--space-md);
}

.tour-button:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

/* Footer Styles */
.footer {
    background-color: var(--secondary-color);
    color: var(--light-color);
    padding: var(--space-xl) var(--space-lg);
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xl);
    margin-bottom: var(--space-lg);
}

.footer-section {
    flex: 1;
    min-width: 250px;
}

.footer-section h3 {
    font-size: 2rem;
    margin-bottom: var(--space-md);
    position: relative;
    padding-bottom: var(--space-xs);
}

.footer-section h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background-color: var(--primary-color);
}

.footer-section ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-section ul li {
    margin-bottom: var(--space-sm);
}

.footer-section a {
    color: var(--light-color);
    text-decoration: none;
    transition: var(--transition-fast);
}

.footer-section a:hover {
    color: var(--primary-light);
}

.footer-section p {
    margin-bottom: var(--space-sm);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.footer-section .fas {
    width: 20px;
    text-align: center;
}

.social-icons {
    display: flex;
    gap: var(--space-sm);
}

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

.social-icons a:hover {
    background-color: var(--primary-color);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Responsive Styles */
@media (max-width: 992px) {
    .hero__title {
        font-size: 3rem;
    }

    .hero__subtitle {
        font-size: 1.6rem;
    }

    .dual-column-section {
        flex-direction: column;
        gap: var(--space-lg);
    }

    .column-divider {
        display: none;
    }

    .with-image {
        flex-direction: column;
    }

    .with-image .image-content {
        order: -1;
        margin-bottom: var(--space-md);
    }
}

@media (max-width: 768px) {
    .main-content {
        padding: var(--space-md);
    }

    .hero {
        height: 30vh;
    }

    .hero__title {
        font-size: 2.4rem;
    }

    .full-width-section {
        margin-left: calc(var(--space-md) * -1);
        margin-right: calc(var(--space-md) * -1);
    }
}

@media (max-width: 480px) {
    .lab-grid {
        grid-template-columns: 1fr;
    }

    .hero {
        height: 25vh;
        min-height: 200px;
    }
}