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

:root {
    --primary-blue: #136cf0;
    --dark-blue: #2e4777;
    --light-gray: #e8ebef;
    --accent-orange: #f09712;
    --success-green: #2e8b57;
    --white: #ffffff;
    --text-dark: #1a1a1a;
    --text-light: #6b7280;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: #f1f3f4;
}

/* Montserrat for headings */
h1, h2, h3, h4, h5, h6,
.hero-title-large,
.hero-subtitle,
.section-header h2,
.feature-card h3,
.benefit-item h4,
.pricing-header h3,
.cta-content h2 {
    font-family: 'Montserrat', sans-serif;
}

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

/* Navigation */
.navbar {
    background: var(--white);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid var(--light-gray);
    padding: 1rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 60px;
    position: relative;
}

.nav-left {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-logo {
    display: flex;
    align-items: center;
}

.nav-logo-link {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.nav-logo-img {
    width: 40px !important;
    height: 40px !important;
    max-width: 40px !important;
    max-height: 40px !important;
    border-radius: 8px;
    object-fit: contain;
    display: block;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-demo-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.nav-demo-link:hover {
    background: var(--light-gray);
    color: var(--primary-blue);
    text-decoration: none;
}

.nav-demo-link i {
    color: #ff0000;
    font-size: 1.2rem;
}

.dna-badge {
    width: 40px;
    height: 40px;
    background: var(--primary-blue);
    border-radius: 50%;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.dna-badge::before {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid var(--white);
    border-radius: 50%;
    background: transparent;
}

.dna-badge::after {
    content: '';
    position: absolute;
    width: 8px;
    height: 8px;
    background: var(--white);
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}


.nav-link {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 400;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 4px;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: var(--primary-blue);
}

.nav-link i {
    font-size: 0.7rem;
}

/* Navigation Dropdown */
.nav-dropdown {
    position: relative;
}

.nav-link-dropdown {
    cursor: pointer;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--white);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    min-width: 180px;
    padding: 0.5rem 0;
    margin-top: 0.5rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 1000;
    border: 1px solid var(--light-gray);
}

.nav-dropdown:hover .dropdown-menu,
.nav-dropdown.active .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: block;
    padding: 0.75rem 1.5rem;
    color: var(--text-dark);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 400;
    transition: all 0.2s ease;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
}

.dropdown-item:hover {
    background: var(--light-gray);
    color: var(--primary-blue);
}

.btn-login-large {
    background: var(--white);
    color: var(--text-dark);
    border: 2px solid var(--text-dark);
    padding: 16px 32px;
    border-radius: 16px;
    font-weight: 500;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.btn-login-large:hover {
    background: var(--light-gray);
    text-decoration: none;
    color: var(--text-dark);
}

.btn-signup-large {
    background: var(--text-dark);
    color: var(--white);
    border: 2px solid var(--text-dark);
    padding: 16px 32px;
    border-radius: 16px;
    font-weight: 500;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.btn-signup-large:hover {
    background: var(--dark-blue);
    text-decoration: none;
    color: var(--white);
}

/* Hero Auth Buttons - Smaller than nav buttons */
.hero-auth-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    align-items: center;
    margin: 1.5rem 0;
    flex-wrap: wrap;
    position: relative;
    z-index: 10;
}

.btn-hero-login {
    background: #2e8b57 !important;
    color: var(--white) !important;
    border: 2px solid #2e8b57 !important;
    padding: 12px 28px !important;
    border-radius: 12px !important;
    font-weight: 500 !important;
    font-size: 1rem !important;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none !important;
    display: inline-block;
    position: relative;
    z-index: 11;
}

.btn-hero-login:hover {
    background: #256d45 !important;
    border-color: #256d45 !important;
    text-decoration: none !important;
    color: var(--white) !important;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(46, 139, 87, 0.3);
}

.btn-hero-signup {
    background: var(--text-dark) !important;
    color: var(--white) !important;
    border: 2px solid var(--text-dark) !important;
    padding: 12px 28px !important;
    border-radius: 12px !important;
    font-weight: 500 !important;
    font-size: 1rem !important;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none !important;
    display: inline-block;
    position: relative;
    z-index: 11;
}

.btn-hero-signup:hover {
    background: #1a1a1a !important;
    border-color: #1a1a1a !important;
    text-decoration: none !important;
    color: var(--white) !important;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

@media (max-width: 768px) {
    .hero-auth-buttons {
        margin: 1rem 0;
    }
    
    .btn-hero-login,
    .btn-hero-signup {
        padding: 10px 24px;
        font-size: 0.95rem;
    }
}

/* Buttons */
.btn-primary {
    background: var(--primary-blue);
    color: var(--white);
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.btn-primary:hover {
    background: var(--dark-blue);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-secondary:hover {
    background: var(--primary-blue);
    color: var(--white);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--dark-blue);
    border: 2px solid var(--dark-blue);
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.btn-outline:hover {
    background: var(--dark-blue);
    color: var(--white);
    transform: translateY(-2px);
}

.btn-large {
    padding: 16px 32px;
    font-size: 1.1rem;
}

/* Hero Section */
.hero {
    background: #f0f4f8;
    padding: 120px 0 60px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}


.hero-content {
    text-align: center;
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title-large {
    font-size: 5.5rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
    text-align: center;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--text-light);
    text-align: center;
    margin-bottom: 3rem;
    line-height: 1.4;
}

/* Free BioBuddy Alert Banner */
.free-buddy-alert {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: #fde68a !important;
    background-color: #fde68a !important;
    padding: 1rem 1.5rem;
    border-radius: 200px;
    margin-bottom: 3rem;
    max-width: 100%;
}

.alert-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    min-width: 24px;
    flex-shrink: 0;
}

.alert-icon svg {
    width: 100%;
    height: 100%;
    display: block;
}

.alert-content {
    flex: 1;
}

.alert-content span {
    color: #1f2937;
    font-size: 0.95rem;
    line-height: 1.4;
}

.alert-action {
    color: #2563eb;
    font-weight: 700;
    text-decoration: none;
    font-size: 0.95rem;
    white-space: nowrap;
    transition: color 0.2s ease;
}

.alert-action:hover {
    color: #1d4ed8;
    text-decoration: underline;
}

.user-toggle {
    display: flex;
    justify-content: center;
    margin-bottom: 2rem;
}

.toggle-btn-large {
    background: var(--white);
    border: 2px solid var(--text-dark);
    color: var(--text-dark);
    padding: 16px 32px;
    font-weight: 500;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 0;
    text-decoration: none;
}

.toggle-btn-large:hover {
    text-decoration: none;
}

.toggle-btn-large:first-child {
    border-radius: 20px 0 0 20px;
    border-right: none;
}

.toggle-btn-large:last-child {
    border-radius: 0 20px 20px 0;
}

.toggle-btn-large.active {
    background: var(--text-dark);
    color: var(--white);
}

.toggle-btn-large:hover:not(.active) {
    background: var(--light-gray);
}

/* Website Preview Section */
.website-preview {
    display: flex;
    justify-content: center;
    margin: 3rem 0;
}

.preview-frame {
    background: var(--white);
    border-radius: 16px;
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.25);
    border: 2px solid var(--light-gray);
    width: 600px;
    max-width: 90vw;
    overflow: hidden;
}

.preview-header {
    background: #f8f9fa;
    padding: 16px 20px;
    border-bottom: 2px solid #e0e0e0;
}

.preview-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.preview-logo {
    display: flex;
    align-items: center;
    gap: 8px;
}

.dna-badge-small {
    width: 24px;
    height: 24px;
    background: var(--primary-blue);
    border-radius: 50%;
    position: relative;
}

.dna-badge-small::before {
    content: '';
    position: absolute;
    width: 12px;
    height: 12px;
    border: 1px solid var(--white);
    border-radius: 50%;
    background: transparent;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.preview-logo span {
    font-weight: 600;
    color: var(--text-dark);
    font-size: 0.9rem;
}

.preview-menu {
    display: flex;
    gap: 20px;
}

.preview-menu span {
    font-size: 0.8rem;
    color: var(--text-light);
    font-weight: 500;
}

.preview-content {
    padding: 30px;
    text-align: center;
    background: var(--white);
}

.preview-lesson h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 20px;
}

.preview-cell {
    width: 120px;
    height: 120px;
    background: radial-gradient(circle, #e8f2ff 0%, #f0f4f8 100%);
    border-radius: 50%;
    position: relative;
    margin: 0 auto 20px;
}

.preview-nucleus {
    width: 30px;
    height: 30px;
    background: var(--primary-blue);
    border-radius: 50%;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.preview-mitochondria {
    width: 20px;
    height: 10px;
    background: var(--success-green);
    border-radius: 10px;
    position: absolute;
    top: 30%;
    right: 20%;
}

.preview-ribosome {
    width: 8px;
    height: 8px;
    background: var(--accent-orange);
    border-radius: 50%;
    position: absolute;
    bottom: 30%;
    left: 25%;
}

.preview-progress {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.progress-bar {
    width: 200px;
    height: 8px;
    background: var(--light-gray);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    width: 75%;
    height: 100%;
    background: var(--primary-blue);
    border-radius: 4px;
}

.preview-progress span {
    font-size: 0.9rem;
    color: var(--text-light);
    font-weight: 500;
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 150px;
    right: 20px;
    z-index: 1002;
    background: var(--primary-blue);
    color: var(--white);
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    box-shadow: 0 4px 20px rgba(19, 108, 240, 0.3);
    transition: all 0.3s ease;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--accent-orange);
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(240, 151, 18, 0.4);
}

.back-to-top i {
    transition: transform 0.3s ease;
}

.back-to-top:hover i {
    transform: translateY(-2px);
}

/* Mobile Showcase Styling */
.mobile-showcase {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 3rem 0;
    padding: 2rem;
}

.mobile-image-container {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.mobile-showcase-image {
    max-width: 600px;
    width: 100%;
    height: auto;
    position: relative;
    z-index: 2;
    filter: drop-shadow(0 10px 30px rgba(19, 108, 240, 0.3));
    mask-image: linear-gradient(to bottom, black 0%, black 85%, transparent 100%);
    -webkit-mask-image: linear-gradient(to bottom, black 0%, black 85%, transparent 100%);
}

.mobile-placeholder {
    width: 100%;
    max-width: 600px;
    height: 600px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 30px rgba(19, 108, 240, 0.2);
    filter: drop-shadow(0 10px 30px rgba(19, 108, 240, 0.3));
    mask-image: linear-gradient(to bottom, black 0%, black 85%, transparent 100%);
    -webkit-mask-image: linear-gradient(to bottom, black 0%, black 85%, transparent 100%);
}

.mobile-placeholder span {
    color: var(--text-light);
    font-size: 1.2rem;
    font-weight: 500;
}

.glow-effect {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(19, 108, 240, 0.4) 0%, rgba(19, 108, 240, 0.25) 30%, rgba(19, 108, 240, 0.15) 50%, rgba(19, 108, 240, 0.08) 70%, transparent 85%);
    border-radius: 50%;
    animation: pulse-glow 3s ease-in-out infinite;
    z-index: 1;
}

@keyframes pulse-glow {
    0%, 100% {
        opacity: 0.8;
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1.15);
    }
}


/* Maintenance Modal */
.maintenance-modal {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    animation: fadeIn 0.3s ease;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.maintenance-modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    box-sizing: border-box;
}

.maintenance-modal-content {
    background-color: var(--white);
    margin: auto;
    padding: 0;
    border-radius: 16px;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: slideDown 0.3s ease;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    position: relative;
}

.maintenance-modal-header {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--dark-blue) 100%);
    color: var(--white);
    padding: 2rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.maintenance-modal-header i {
    font-size: 3rem;
}

.maintenance-modal-header h3 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 600;
}

.maintenance-modal-body {
    padding: 2rem;
    text-align: center;
}

.maintenance-modal-body p {
    color: var(--text-dark);
    font-size: 1.1rem;
    line-height: 1.6;
    margin: 0;
}

.maintenance-modal-footer {
    padding: 1.5rem 2rem 2rem;
    text-align: center;
}

.maintenance-modal-footer .btn-primary {
    min-width: 150px;
    padding: 12px 32px;
    font-size: 1rem;
    width: 100%;
    max-width: 300px;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideDown {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@media (max-width: 768px) {
    .maintenance-modal.show {
        padding: 10px;
        align-items: flex-start;
        padding-top: 20px;
    }
    
    .maintenance-modal-content {
        width: 100%;
        max-width: 100%;
        margin: 0;
        max-height: calc(100vh - 40px);
        border-radius: 12px;
    }
    
    .maintenance-modal-header {
        padding: 1.25rem 1rem;
    }
    
    .maintenance-modal-header i {
        font-size: 2rem;
    }
    
    .maintenance-modal-header h3 {
        font-size: 1.2rem;
        line-height: 1.3;
    }
    
    .maintenance-modal-body {
        padding: 1.25rem 1rem;
    }
    
    .maintenance-modal-body p {
        font-size: 0.95rem;
        line-height: 1.5;
    }
    
    .maintenance-modal-footer {
        padding: 1rem;
    }
    
    .maintenance-modal-footer .btn-primary {
        width: 100%;
        max-width: 100%;
        padding: 14px 24px;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .maintenance-modal.show {
        padding: 5px;
        padding-top: 15px;
    }
    
    .maintenance-modal-content {
        max-height: calc(100vh - 30px);
        border-radius: 10px;
    }
    
    .maintenance-modal-header {
        padding: 1rem 0.75rem;
    }
    
    .maintenance-modal-header i {
        font-size: 1.75rem;
    }
    
    .maintenance-modal-header h3 {
        font-size: 1.1rem;
    }
    
    .maintenance-modal-body {
        padding: 1rem 0.75rem;
    }
    
    .maintenance-modal-body p {
        font-size: 0.9rem;
    }
    
    .maintenance-modal-footer {
        padding: 0.75rem;
    }
}

/* Demo Video Modal */
.demo-modal {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
}

.demo-modal-content {
    background-color: var(--white);
    margin: 2% auto;
    padding: 0;
    border-radius: 12px;
    width: 90%;
    max-width: 900px;
    max-height: 90vh;
    position: relative;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.demo-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--light-gray);
}

.demo-modal-header h3 {
    margin: 0;
    color: var(--text-dark);
    font-size: 1.5rem;
    font-weight: 600;
}

.demo-modal-close {
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--text-light);
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.2s ease;
}

.demo-modal-close:hover {
    background-color: var(--light-gray);
    color: var(--text-dark);
}

.demo-modal-body {
    padding: 0;
}

.demo-video-wrapper {
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    overflow: hidden;
    border-radius: 0 0 12px 12px;
}

.demo-video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

/* Mobile responsive */
@media (max-width: 768px) {
    .demo-modal-content {
        width: 95%;
        margin: 5% auto;
        max-height: 85vh;
    }
    
    .demo-modal-header {
        padding: 16px 20px;
    }
    
    .demo-modal-header h3 {
        font-size: 1.25rem;
    }
    
    .demo-modal-close {
        font-size: 1.5rem;
        width: 28px;
        height: 28px;
    }
}

/* Floating Help Button */
/* Floating help button removed - using Freshdesk chat widget instead */


/* Responsive adjustments for floating elements */
@media (max-width: 768px) {
    .back-to-top {
        bottom: 90px;
        right: 15px;
        width: 45px;
        height: 45px;
        font-size: 1rem;
    }
    
    
    .mobile-showcase {
        margin: 2rem 0;
        padding: 1rem;
    }
    
    .mobile-showcase-image {
        max-width: 500px;
    }
    
    .glow-effect {
        width: 600px;
        height: 600px;
    }
    
    .nav-logo-img {
        width: 35px !important;
        height: 35px !important;
        max-width: 35px !important;
        max-height: 35px !important;
    }
}



/* Cell Model Animation */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.cell-model {
    width: 400px;
    height: 400px;
    position: relative;
    background: radial-gradient(circle, var(--light-gray) 0%, var(--white) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
}

.cell-structure {
    position: relative;
    width: 300px;
    height: 300px;
}

.nucleus {
    width: 80px;
    height: 80px;
    background: var(--primary-blue);
    border-radius: 50%;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.mitochondria {
    width: 40px;
    height: 20px;
    background: var(--success-green);
    border-radius: 20px;
    position: absolute;
    top: 30%;
    right: 20%;
}

.ribosome {
    width: 15px;
    height: 15px;
    background: var(--accent-orange);
    border-radius: 50%;
    position: absolute;
    bottom: 25%;
    left: 30%;
}

.endoplasmic-reticulum {
    width: 60px;
    height: 4px;
    background: var(--dark-blue);
    border-radius: 2px;
    position: absolute;
    top: 60%;
    left: 20%;
}

/* Features Section */
.features {
    padding: 80px 0;
    background: var(--white);
    position: relative;
    overflow: hidden;
}




.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.2rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

.testimonials-cta {
    margin-top: 2rem;
    text-align: center;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 1px solid var(--light-gray);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-blue);
}

.feature-icon {
    width: 90px;
    height: 90px;
    background: var(--primary-blue);
    border-radius: 18px;
    display: flex !important;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    visibility: visible;
    opacity: 1;
}

.feature-icon i {
    font-size: 2.25rem;
    color: var(--white);
    display: inline-block;
}

.feature-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.feature-card.coming-soon {
    position: relative;
    opacity: 0.9;
}

.coming-soon-badge {
    position: absolute;
    top: -8px;
    right: -8px;
    background: var(--accent-orange);
    color: var(--white);
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    z-index: 2;
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.6;
}

.feature-card-cta {
    display: inline-block;
    background-color: var(--white);
    color: #1a1a1a;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid #1a1a1a;
    margin-top: 1rem;
}

.feature-card-cta:hover {
    background-color: #1a1a1a;
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

/* Video Section */
.video-section {
    padding: 80px 0;
    background: var(--white);
    position: relative;
    overflow: hidden;
}



.video-section .section-header h2 {
    color: var(--text-dark);
}

.video-section .section-header p {
    color: var(--text-light);
}

.pricing-section .section-header h2 {
    color: var(--text-dark);
}

.pricing-section .section-header p {
    color: var(--text-light);
}


.video-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    align-items: start;
    margin-bottom: 3rem;
}

.video-wrapper {
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
}

.video-wrapper:hover {
    transform: translateY(-4px);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.2);
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.video-info {
    padding: 1rem 0;
}

.video-highlights {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--light-gray);
    border-radius: 12px;
    transition: all 0.3s ease;
    border-left: 4px solid var(--primary-blue);
}

.highlight-item:hover {
    background: rgba(19, 108, 240, 0.1);
    transform: translateX(8px);
}

.highlight-item i {
    font-size: 1.5rem;
    color: var(--primary-blue);
    width: 24px;
    text-align: center;
}

.highlight-item span {
    font-weight: 500;
    color: var(--text-dark);
    line-height: 1.4;
}

.video-cta {
    text-align: center;
    padding: 3rem 2rem;
    background: var(--light-gray);
    border-radius: 20px;
    border: 2px solid var(--light-gray);
}

.video-cta h3 {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 2rem;
}

.video-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.video-buttons .btn-primary,
.video-buttons .btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

@media (max-width: 768px) {
    .video-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .video-info {
        padding: 0;
    }
}

/* Beta Section */
.beta-section {
    padding: 80px 0;
    background: var(--white);
    position: relative;
    overflow: hidden;
}




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

.beta-text h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    line-height: 1.3;
    color: var(--text-dark);
}

.beta-features {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.beta-feature h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.beta-feature p {
    color: var(--text-light);
    line-height: 1.6;
}

.beta-tags {
    margin-top: 2.5rem;
}

.beta-tags h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.tags-container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.model-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--light-gray);
    color: var(--text-dark);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid rgba(19, 108, 240, 0.2);
    transition: all 0.3s ease;
}

.model-tag:hover {
    background: rgba(19, 108, 240, 0.1);
    border-color: var(--primary-blue);
    color: var(--primary-blue);
    transform: translateY(-2px);
}

/* Beta Image Placeholder */
.beta-image-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.placeholder-content {
    width: 100%;
    max-width: 500px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cell-model-gif {
    width: 100%;
    max-width: 100%;
    height: auto;
    border-radius: 16px;
    box-shadow: 
        0 20px 60px rgba(0, 0, 0, 0.15),
        0 10px 30px rgba(0, 0, 0, 0.1);
    object-fit: contain;
}

@media (max-width: 768px) {
    .beta-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .beta-image-placeholder {
        order: -1;
        padding: 1rem;
    }
    
    .placeholder-content {
        max-width: 300px;
    }
}

/* Pricing Section */
.pricing-section {
    padding: 80px 0;
    background: var(--white);
}

.pricing-container {
    display: flex;
    justify-content: center;
    margin-bottom: 4rem;
}

.pricing-card {
    background: var(--white);
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: var(--shadow-lg);
    border: 2px solid var(--light-gray);
    max-width: 500px;
    width: 100%;
    position: relative;
    transition: all 0.3s ease;
}

.pricing-card.featured {
    border-color: var(--primary-blue);
    transform: scale(1.02);
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent-orange);
    color: var(--white);
    padding: 8px 24px;
    border-radius: 20px;
}

.student-pricing-card .sale-badge {
    position: absolute;
    top: -12px;
    right: 20px;
    left: auto;
    transform: none;
    background: linear-gradient(135deg, var(--success-green), #22c55e);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(46, 139, 87, 0.3);
    z-index: 10;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
    font-size: 0.9rem;
    font-weight: 600;
    text-align: center;
    width: auto;
    white-space: nowrap;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.pricing-header {
    text-align: center;
    margin-bottom: 2rem;
    padding-top: 1rem;
}

.pricing-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    margin-bottom: 1rem;
    gap: 0.5rem;
}

.original-price {
    font-size: 1.2rem;
    color: var(--text-light);
    text-decoration: line-through;
    margin-right: 0.5rem;
}

.currency {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-blue);
}

.amount {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin: 0 0.25rem;
}

.amount sup {
    font-size: 0.4em;
    vertical-align: super;
    line-height: 0;
    position: relative;
    top: -0.2em;
}

.period {
    font-size: 1rem;
    color: var(--text-light);
    font-weight: 500;
}

.pricing-note {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.5;
    background: var(--light-gray);
    padding: 1rem;
    border-radius: 8px;
    border-left: 4px solid var(--accent-orange);
}

.pricing-note .pricing-link {
    color: var(--primary-blue);
    text-decoration: underline;
    font-weight: 600;
    transition: color 0.2s ease;
}

.pricing-note .pricing-link:hover {
    color: var(--dark-blue);
}

.pricing-features {
    margin-bottom: 2rem;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 1rem;
    padding: 0.5rem 0;
}

.feature-item i {
    color: var(--success-green);
    font-size: 1.1rem;
    margin-top: 0.2rem;
    flex-shrink: 0;
}

.feature-item.highlight {
    background: rgba(19, 108, 240, 0.1);
    padding: 1rem;
    border-radius: 8px;
    border-left: 4px solid var(--primary-blue);
}

.feature-item.highlight i {
    color: var(--primary-blue);
}

.feature-item span {
    color: var(--text-dark);
    font-weight: 500;
    line-height: 1.5;
}

.pricing-cta {
    text-align: center;
}

.pricing-guarantee {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-top: 1rem;
    font-style: italic;
}

.pricing-benefits {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
}

.benefit-item {
    text-align: center;
    padding: 2rem;
    background: var(--light-gray);
    border-radius: 16px;
    transition: all 0.3s ease;
}

.benefit-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}

.benefit-icon {
    width: 60px;
    height: 60px;
    background: var(--light-gray);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.benefit-icon i {
    font-size: 1.5rem;
    color: var(--primary-blue);
}

.benefit-item h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.benefit-item p {
    color: var(--text-light);
    line-height: 1.6;
}

/* Student Pricing Section */
.student-pricing-section {
    padding: 80px 0;
    background: var(--white);
    position: relative;
    overflow: hidden;
}




.student-pricing-container {
    display: flex;
    justify-content: center;
    margin-bottom: 4rem;
}

.student-pricing-card {
    background: var(--white);
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: var(--shadow-lg);
    border: 2px solid var(--accent-orange);
    max-width: 450px;
    width: 100%;
    position: relative;
    transition: all 0.3s ease;
}

.student-pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
    border-color: var(--primary-blue);
}

.student-pricing-card .pricing-header {
    text-align: center;
    margin-bottom: 2rem;
}

.student-pricing-card .pricing-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.student-pricing-card .price {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    gap: 0.5rem;
}

.student-pricing-card .price-original {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.25rem;
}

.student-pricing-card .price-sale {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.25rem;
}

.student-pricing-card .currency {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--accent-orange);
}

.student-pricing-card .amount {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--accent-orange);
    margin: 0 0.25rem;
}

.student-pricing-card .amount.strikethrough {
    text-decoration: line-through;
    color: var(--text-light);
    font-size: 2rem;
    opacity: 0.6;
}

.student-pricing-card .amount.sale-amount {
    color: var(--success-green);
    font-size: 3.5rem;
}

.student-pricing-card .period {
    font-size: 1rem;
    color: var(--text-light);
    font-weight: 500;
}


@media (max-width: 768px) {
    .student-pricing-card .amount.strikethrough {
        font-size: 1.5rem;
    }
    
    .student-pricing-card .amount.sale-amount {
        font-size: 2.5rem;
    }
    
    .student-pricing-card .sale-badge {
        font-size: 0.75rem;
        padding: 0.4rem 0.8rem;
    }
}

.pricing-description {
    color: var(--text-light);
    font-size: 1rem;
    line-height: 1.5;
    text-align: center;
    margin-bottom: 0;
}

.student-pricing-card .pricing-features {
    margin-bottom: 2rem;
}

.student-pricing-card .feature-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 1rem;
    padding: 0.5rem 0;
}

.student-pricing-card .feature-item i {
    color: var(--success-green);
    font-size: 1.1rem;
    margin-top: 0.2rem;
    flex-shrink: 0;
}

.student-pricing-card .feature-item span {
    color: var(--text-dark);
    font-weight: 500;
    line-height: 1.5;
}

.student-pricing-card .pricing-cta {
    text-align: center;
}

.student-pricing-card .pricing-guarantee {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
    margin-top: 1rem;
    font-style: italic;
}

.student-benefits {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
}

.student-benefits .benefit-item {
    text-align: center;
    padding: 2rem;
    background: var(--white);
    border-radius: 16px;
    transition: all 0.3s ease;
    border: 1px solid var(--light-gray);
}

.student-benefits .benefit-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
    border-color: var(--accent-orange);
}

.student-benefits .benefit-icon {
    width: 60px;
    height: 60px;
    background: var(--light-gray);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.student-benefits .benefit-icon i {
    font-size: 1.5rem;
    color: var(--accent-orange);
}

.student-benefits .benefit-item h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.student-benefits .benefit-item p {
    color: var(--text-light);
    line-height: 1.6;
}

/* CTA Section */
/* Contact Section */
.contact-section {
    padding: 80px 0;
    background: #f8f9fa;
}

.contact-content {
    max-width: 700px;
    margin: 0 auto;
}

.contact-header {
    text-align: center;
    margin-bottom: 3rem;
}

.contact-header h2 {
    font-family: 'Montserrat', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.contact-header p {
    font-size: 1.2rem;
    color: var(--text-light);
}

.contact-form {
    background: var(--white);
    padding: 3rem;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.contact-form .form-group {
    display: flex;
    flex-direction: column;
    margin-bottom: 1.5rem;
}

.contact-form .form-group label {
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
    font-size: 0.95rem;
}

.contact-form .form-group input,
.contact-form .form-group select,
.contact-form .form-group textarea {
    padding: 0.875rem 1rem;
    border: 2px solid var(--light-gray);
    border-radius: 8px;
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: var(--white);
    color: var(--text-dark);
}

.contact-form .form-group input:focus,
.contact-form .form-group select:focus,
.contact-form .form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(19, 108, 240, 0.1);
}

.contact-form .form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.contact-form .form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%231a1a1a' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .contact-form {
        padding: 2rem 1.5rem;
    }
    
    .contact-header h2 {
        font-size: 2rem;
    }
}

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

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-logo h3 {
    color: var(--primary-blue);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

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

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-column h4 {
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--white);
}

.footer-column a {
    display: block;
    color: var(--text-light);
    text-decoration: none;
    margin-bottom: 0.5rem;
    transition: color 0.3s ease;
}

.footer-column a:hover {
    color: var(--primary-blue);
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 2rem;
    text-align: center;
    color: var(--text-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-bottom .footer-links {
    display: flex;
    gap: 1.5rem;
    grid-template-columns: none;
}

.footer-bottom .footer-links a {
    color: var(--text-light);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-bottom .footer-links a:hover {
    color: var(--primary-blue);
}

@media (max-width: 768px) {
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

/* Animations - All removed for static design */


/* Mobile Menu - Completely hidden on desktop */
.mobile-menu-toggle {
    display: none;
}

.mobile-menu {
    display: none;
}

/* Mobile Menu Styles */
.mobile-menu-toggle {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px;
    width: 40px;
    height: 40px;
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    z-index: 1002;
    position: relative;
}

.mobile-menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.mobile-menu-toggle.is-active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

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

.mobile-menu-toggle.is-active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

.mobile-menu {
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    width: 100%;
    background: var(--white);
    border-bottom: 1px solid var(--light-gray);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    z-index: 1001;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.mobile-menu.is-open {
    max-height: 600px;
}

.mobile-menu-content {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.mobile-nav-link {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    font-size: 1rem;
    padding: 12px 16px;
    border-radius: 8px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.mobile-nav-link:hover,
.mobile-nav-link:active {
    background: var(--light-gray);
    color: var(--primary-blue);
}

.mobile-nav-link.btn-signup-mobile {
    background: var(--primary-blue);
    color: var(--white);
    text-align: center;
    justify-content: center;
    margin-top: 8px;
}

.mobile-nav-link.btn-signup-mobile:hover,
.mobile-nav-link.btn-signup-mobile:active {
    background: var(--dark-blue);
    color: var(--white);
}

/* Responsive Design */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-links {
        display: none;
    }
    
    .nav-right {
        display: none;
    }
    
    .mobile-menu {
        display: block;
    }
}

@media (min-width: 769px) {
    .mobile-menu-toggle {
        display: none !important;
    }
    
    .mobile-menu {
        display: none !important;
    }
}

@media (max-width: 768px) {
    .free-buddy-alert {
        flex-direction: column;
        align-items: center;
        text-align: center;
        padding: 1rem;
        gap: 0.75rem;
        border-radius: 200px;
    }
    
    .alert-content {
        flex: 1 1 100%;
        order: 1;
        width: 100%;
    }
    
    .alert-icon {
        order: 0;
        flex-shrink: 0;
    }
    
    .alert-action {
        order: 2;
        margin-left: 0;
        margin-top: 0.25rem;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-title-large {
        font-size: 3.5rem;
        line-height: 1.2;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
        margin-bottom: 2rem;
    }
    
    .beta-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .cell-model {
        width: 300px;
        height: 300px;
    }
    
    .cell-structure {
        width: 200px;
        height: 200px;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-card {
        padding: 1.5rem;
    }
}

/* Support Page Styles */
.support-options {
    padding: 140px 0 80px;
    background: var(--white);
}

.support-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.support-card {
    background: var(--white);
    border: 2px solid var(--light-gray);
    border-radius: 16px;
    padding: 2.5rem;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.support-card:hover {
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
}

.support-card.coming-soon-card {
    opacity: 0.8;
}

.support-icon {
    width: 80px;
    height: 80px;
    margin-bottom: 1.5rem;
    color: var(--primary-blue);
    display: flex;
    align-items: center;
    justify-content: center;
}

.line-graphic {
    width: 100%;
    height: 100%;
}

.support-card h3 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.support-card p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.support-card .btn-primary,
.support-card .btn-secondary,
.support-card .btn-outline {
    width: 100%;
    margin-top: auto;
}

.support-card .btn-outline:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.coming-soon-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--accent-orange);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.launched-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--success-green);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.support-form-section {
    padding: 80px 0;
    background: #f8f9fa;
}

.form-container {
    max-width: 700px;
    margin: 0 auto;
    background: var(--white);
    border-radius: 16px;
    padding: 3rem;
    box-shadow: var(--shadow-lg);
}

.form-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.form-header h2 {
    font-family: 'Montserrat', sans-serif;
    font-size: 2rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

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

.support-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
    font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.875rem 1rem;
    border: 2px solid var(--light-gray);
    border-radius: 8px;
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: var(--white);
    color: var(--text-dark);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(19, 108, 240, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%231a1a1a' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

.form-message {
    display: none;
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 8px;
}

.form-success {
    background: #d4edda;
    border: 1px solid #c3e6cb;
    color: #155724;
    padding: 1rem;
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-success i {
    font-size: 1.5rem;
    color: var(--success-green);
}

.form-error {
    background: #f8d7da;
    border: 1px solid #f5c6cb;
    color: #721c24;
    padding: 1rem;
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-error i {
    font-size: 1.5rem;
    color: #dc3545;
}

.form-error a {
    color: var(--primary-blue);
    text-decoration: none;
}

.form-error a:hover {
    text-decoration: underline;
}

.form-note {
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

.form-note a {
    color: var(--primary-blue);
    text-decoration: none;
}

.form-note a:hover {
    text-decoration: underline;
}

/* Responsive Support Page */
@media (max-width: 768px) {
    .support-cards-grid {
        grid-template-columns: 1fr;
    }

    .form-container {
        padding: 2rem 1.5rem;
    }

    .form-header h2 {
        font-size: 1.75rem;
    }
}

/* Privacy Policy Page */
.privacy-policy-section {
    background-color: #f1f3f4;
    min-height: 100vh;
}

.privacy-content {
    line-height: 1.8;
}

.privacy-content h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.privacy-content h2 {
    font-size: 2rem;
    margin-top: 3rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
    scroll-margin-top: 100px;
}

.privacy-content h3 {
    font-size: 1.5rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.privacy-content p {
    margin-bottom: 1rem;
    color: var(--text-light);
    line-height: 1.8;
}

.privacy-content ul,
.privacy-content ol {
    margin-left: 2rem;
    margin-bottom: 1.5rem;
    color: var(--text-light);
    line-height: 1.8;
}

.privacy-content li {
    margin-bottom: 0.5rem;
}

.privacy-content a {
    color: var(--primary-blue);
    text-decoration: none;
    transition: color 0.3s ease;
}

.privacy-content a:hover {
    color: var(--dark-blue);
    text-decoration: underline;
}

.privacy-toc {
    background: var(--white);
    padding: 2rem;
    border-radius: 8px;
    margin-bottom: 3rem;
    box-shadow: var(--shadow);
}

.privacy-toc ol {
    list-style: decimal;
    padding-left: 1.5rem;
    line-height: 2;
}

.privacy-toc a {
    color: var(--primary-blue);
    text-decoration: none;
    transition: color 0.3s ease;
}

.privacy-toc a:hover {
    color: var(--dark-blue);
    text-decoration: underline;
}

.privacy-body {
    background: var(--white);
    padding: 3rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.privacy-body section {
    margin-bottom: 3rem;
}

.privacy-body section:last-child {
    margin-bottom: 0;
}

/* Smooth scrolling for anchor links */
html {
    scroll-behavior: smooth;
}

/* Responsive Privacy Policy */
@media (max-width: 768px) {
    .privacy-policy-section {
        padding-top: 100px !important;
        padding-bottom: 40px !important;
    }

    .privacy-content h1 {
        font-size: 2rem;
    }

    .privacy-content h2 {
        font-size: 1.75rem;
        margin-top: 2rem;
    }

    .privacy-content h3 {
        font-size: 1.25rem;
    }

    .privacy-body {
        padding: 2rem 1.5rem;
    }

    .privacy-toc {
        padding: 1.5rem;
    }

    .privacy-content ul,
    .privacy-content ol {
        margin-left: 1.5rem;
    }
}

/* Testimonials Section */
.testimonials-section {
    padding: 80px 0;
    background: var(--white);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem;
    margin-top: 3rem;
    align-items: start;
}

.testimonial-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.testimonial-subtitle {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
    text-align: center;
    font-family: 'Montserrat', sans-serif;
}

.testimonial-item .instagram-media {
    width: 100%;
    max-width: 540px;
    margin: 0 auto;
}

/* Responsive Testimonials */
@media (max-width: 768px) {
    .testimonials-section {
        padding: 60px 0;
    }

    .testimonials-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
        margin-top: 2rem;
    }

    .testimonial-subtitle {
        font-size: 1.25rem;
        margin-bottom: 1rem;
    }
}

/* About Page Styles */
.about-hero {
    background: url('/img/about-circle.jpg') center center / cover no-repeat;
    color: var(--white);
    padding: 140px 0 80px;
    text-align: center;
    margin-top: 60px;
    position: relative;
}

.accessibility-hero {
    background: url('/img/accessibility.jpg') center center / cover no-repeat;
}

.about-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 0;
}

.about-hero .container {
    position: relative;
    z-index: 1;
}

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

.about-hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--white);
}

.about-hero-subtitle {
    font-size: 1.25rem;
    opacity: 0.95;
    font-weight: 400;
}

.team-section {
    padding: 80px 0;
    background-color: var(--white);
}

.team-section:nth-child(even) {
    background-color: #f8f9fa;
}

.team-section .container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

.team-section .section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.team-section .section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.team-section .section-header p {
    font-size: 1.125rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* Team Grid Container - Full width with margins */
.team-grid-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

/* Team Grid - 3 columns */
.team-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
}

.team-member-card {
    background: var(--white);
    border-radius: 16px;
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.team-member-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.team-member-image {
    width: 200px;
    height: 200px;
    margin: 0 auto 1.5rem;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid var(--light-gray);
}

.team-member-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%);
}

.team-member-info h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.team-member-role {
    font-size: 1rem;
    color: var(--primary-blue);
    font-weight: 500;
}

/* Advisors Grid - 3 columns */
.advisors-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

/* Center 4th item in middle column */
.advisors-grid .advisor-card:nth-child(4) {
    grid-column: 2;
}

.curriculum-section .team-grid .team-member-card:nth-child(4) {
    grid-column: 2;
}

.advisor-card {
    background: var(--white);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.advisor-image {
    width: 160px;
    height: 160px;
    margin: 0 auto 1.25rem;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--light-gray);
}

.advisor-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%);
}

.advisor-info h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

.advisor-bio {
    font-size: 0.95rem;
    color: var(--text-light);
    line-height: 1.6;
    font-style: italic;
}

/* Responsive Design for About Page */
@media (max-width: 1024px) {
    .team-section .container {
        padding: 0 30px;
    }
    
    .team-grid-container {
        padding: 0 30px;
    }
    
    .team-grid,
    .advisors-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }
    
    .advisors-grid .advisor-card:nth-child(4),
    .curriculum-section .team-grid .team-member-card:nth-child(4) {
        grid-column: auto;
    }
}

@media (max-width: 768px) {
    .about-hero {
        padding: 120px 0 60px;
    }
    
    .about-hero-title {
        font-size: 2.5rem;
    }
    
    .about-hero-subtitle {
        font-size: 1.125rem;
    }
    
    .team-section {
        padding: 60px 0;
    }
    
    .team-section .container {
        padding: 0 20px;
    }
    
    .team-grid-container {
        padding: 0 20px;
    }
    
    .team-section .section-header h2 {
        font-size: 2rem;
    }
    
    .team-grid,
    .advisors-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .advisors-grid .advisor-card:nth-child(4),
    .curriculum-section .team-grid .team-member-card:nth-child(4) {
        grid-column: auto;
    }
    
    .team-member-image {
        width: 180px;
        height: 180px;
    }
    
    .advisor-image {
        width: 140px;
        height: 140px;
    }
}

/* Testimonials Page Styles */
.testimonials-hero {
    background: url('img/bubbles.gif') center center / cover no-repeat;
    color: var(--white);
    padding: 140px 0 80px;
    text-align: center;
    margin-top: 60px;
    position: relative;
}

.testimonials-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 0;
}

.testimonials-hero .container {
    position: relative;
    z-index: 1;
}

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

.testimonials-hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--white);
}

.testimonials-hero-subtitle {
    font-size: 1.25rem;
    opacity: 0.95;
    font-weight: 400;
}

.reviews-feedback-cta {
    margin-top: 2rem;
    text-align: center;
}

/* Stats Section */
.testimonials-stats {
    background-color: var(--white);
    padding: 60px 0;
    border-bottom: 1px solid var(--light-gray);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    text-align: center;
}

.stat-item {
    padding: 2rem;
}

.stat-number {
    font-size: 4rem;
    font-weight: 800;
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
    font-family: 'Montserrat', sans-serif;
}

.stat-number-condensed {
    font-family: 'Roboto Condensed', sans-serif;
    font-size: 5.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1;
}

.stat-label {
    font-size: 1.125rem;
    color: var(--text-dark);
    font-weight: 500;
}

/* Testimonials Content Section */
.testimonials-content-section {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.testimonials-content-section:nth-child(even) {
    background-color: var(--white);
}

/* Diverse Testimonials Grid */
.testimonials-grid-diverse {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.testimonial-card {
    background: var(--white);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
}

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

.testimonial-card.student {
    border-top: 4px solid #4CAF50;
}

.testimonial-card.educator {
    border-top: 4px solid var(--primary-blue);
}

.testimonial-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    text-align: center;
}

.testimonial-card.student .testimonial-icon {
    color: #4CAF50;
}

.testimonial-card.educator .testimonial-icon {
    color: var(--primary-blue);
}

.testimonial-stars {
    text-align: center;
    margin-bottom: 1rem;
    color: #FFD700;
    font-size: 1.25rem;
}

.testimonial-stars i {
    margin: 0 2px;
}

.testimonial-text {
    font-family: 'Caveat', cursive;
    font-size: 1.5rem;
    line-height: 1.6;
    color: var(--text-dark);
    margin: 0 0 1.5rem 0;
    font-weight: 500;
    text-align: center;
}

.testimonial-author {
    text-align: center;
    font-size: 0.95rem;
    color: var(--text-light);
    font-weight: 500;
    font-style: italic;
    margin-top: auto;
}

.testimonial-author a {
    color: var(--primary-blue);
    text-decoration: none;
}

.testimonial-author a:hover {
    text-decoration: underline;
}

/* Instagram Section */
.testimonials-instagram-section {
    padding: 80px 0;
    background-color: var(--white);
}

/* Responsive Design for Testimonials Page */
@media (max-width: 1024px) {
    .stats-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 2rem;
    }
    
    .stat-number {
        font-size: 3rem;
    }
    
    .stat-number-condensed {
        font-size: 4.5rem;
    }
    
    .testimonials-grid-diverse {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .testimonials-hero {
        padding: 120px 0 60px;
    }
    
    .testimonials-hero-title {
        font-size: 2.5rem;
    }
    
    .testimonials-hero-subtitle {
        font-size: 1.125rem;
    }
    
    .testimonials-stats {
        padding: 40px 0;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .stat-number {
        font-size: 3rem;
    }
    
    .stat-number-condensed {
        font-size: 4rem;
    }
    
    .testimonials-content-section {
        padding: 60px 0;
    }
    
    .testimonials-grid-diverse {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .testimonial-text {
        font-size: 1.25rem;
    }
}

/* Accessibility Statement Page Styles */
.accessibility-content {
    padding: 60px 0 80px;
    background: var(--white);
}

.accessibility-statement {
    max-width: 900px;
    margin: 0 auto;
}

.statement-intro {
    margin-bottom: 3rem;
}

.statement-intro h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
    font-family: 'Montserrat', sans-serif;
}

.statement-intro p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-dark);
}

.statement-section {
    margin-bottom: 3.5rem;
}

.statement-section:last-child {
    margin-bottom: 0;
}

.statement-section h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
    margin-top: 0;
    font-family: 'Montserrat', sans-serif;
}

.statement-section > p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-dark);
    margin-bottom: 1.25rem;
}

.statement-section > p:last-of-type {
    margin-bottom: 1.5rem;
}

.accessibility-features-list {
    list-style: none;
    padding: 0;
    margin: 1.5rem 0;
}

.accessibility-features-list li {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-dark);
    margin-bottom: 1.25rem;
    padding-left: 1.75rem;
    position: relative;
}

.accessibility-features-list li:before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--primary-blue);
    font-weight: bold;
    font-size: 1.5rem;
    line-height: 1.4;
}

.accessibility-features-list li:last-child {
    margin-bottom: 0;
}

.accessibility-features-list li strong {
    color: var(--text-dark);
    font-weight: 600;
}

.statement-section a {
    color: var(--primary-blue);
    text-decoration: none;
    transition: color 0.2s ease;
}

.statement-section a:hover {
    color: var(--dark-blue);
    text-decoration: underline;
}

/* Responsive Design for Accessibility Statement */
@media (max-width: 768px) {
    .accessibility-content {
        padding: 60px 0;
    }
    
    .statement-intro h2 {
        font-size: 2rem;
    }
    
    .statement-section h2 {
        font-size: 1.75rem;
    }
    
    .statement-intro p,
    .statement-section > p,
    .accessibility-features-list li {
        font-size: 1rem;
    }
}

/* Labs Page Styles */
.labs-hero {
    background-image: linear-gradient(rgba(19, 108, 240, 0.7), rgba(46, 71, 119, 0.8)), url('img/lab-scientist.jpg');
    background-size: cover;
    background-position: center 30%;
    background-repeat: no-repeat;
    padding: 140px 0 80px;
    text-align: center;
    margin-top: 60px;
    position: relative;
    color: var(--white);
}

.labs-hero .container {
    position: relative;
    z-index: 1;
}

.labs-hero-content {
    max-width: 900px;
    margin: 0 auto;
}

.labs-hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 1.5rem;
    font-family: 'Montserrat', sans-serif;
}

.labs-hero-subtitle {
    font-size: 1.25rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.95);
    max-width: 800px;
    margin: 0 auto;
}

.labs-features {
    padding: 80px 0;
    background-color: var(--white);
}

.labs-features-header {
    text-align: center;
    max-width: 900px;
    margin: 0 auto 3rem;
}

.labs-features-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
    font-family: 'Montserrat', sans-serif;
}

.labs-features-subheadline {
    font-size: 1.125rem;
    color: var(--text-light);
    line-height: 1.6;
    margin: 0;
}

.labs-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.labs-feature-card {
    background: var(--light-gray);
    border-radius: 16px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.labs-feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-blue);
}

.labs-feature-icon-wrapper {
    margin-bottom: 1rem;
}

.labs-feature-icon-wrapper i {
    font-size: 2.5rem;
    color: var(--primary-blue);
}

.labs-feature-headline {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.4;
    margin: 0 0 0.5rem 0;
    font-family: 'Montserrat', sans-serif;
}

.labs-feature-body {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-light);
    line-height: 1.6;
    margin: 0;
    font-family: 'Inter', sans-serif;
}

.labs-grid-section {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.labs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.lab-card {
    background: var(--white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1), 0 2px 4px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    position: relative;
}

.lab-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    z-index: 10;
}

.lab-badge-free {
    background-color: #FFD700;
    color: #1a1a1a;
    box-shadow: 0 2px 8px rgba(255, 215, 0, 0.3);
}

.lab-badge-coming-soon {
    background-color: var(--accent-orange);
    color: var(--white);
    box-shadow: 0 2px 8px rgba(240, 151, 18, 0.3);
}

.lab-badge-subscribers {
    background-color: var(--primary-blue);
    color: var(--white);
    box-shadow: 0 2px 8px rgba(19, 108, 240, 0.3);
}

.lab-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15), 0 4px 8px rgba(0, 0, 0, 0.1);
}

.lab-image-placeholder {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--dark-blue) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.lab-image-placeholder i {
    font-size: 4rem;
    opacity: 0.8;
}

.lab-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    background: var(--light-gray);
}

.lab-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.lab-content {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.lab-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.75rem;
    font-family: 'Montserrat', sans-serif;
    line-height: 1.4;
}

.lab-description {
    font-size: 1rem;
    color: var(--text-light);
    line-height: 1.6;
    margin: 0 0 1.5rem 0;
    flex-grow: 1;
}

.lab-cta-btn {
    display: inline-block;
    background-color: transparent;
    color: #1a1a1a;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid #1a1a1a;
    margin-top: auto;
}

.lab-cta-btn:hover {
    background-color: #1a1a1a;
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.labs-cta {
    text-align: center;
    margin-top: 4rem;
}

/* Responsive Design for Labs Page */
@media (max-width: 1024px) {
    .labs-hero-title {
        font-size: 2.5rem;
    }
    
    .labs-hero-subtitle {
        font-size: 1.125rem;
    }
    
    .labs-features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .labs-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .labs-hero {
        padding: 120px 0 60px;
    }
    
    .labs-hero-title {
        font-size: 2rem;
    }
    
    .labs-hero-subtitle {
        font-size: 1rem;
    }
    
    .labs-features {
        padding: 60px 0;
    }
    
    .labs-features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .labs-grid-section {
        padding: 60px 0;
    }
    
    .labs-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .lab-image-placeholder {
        height: 180px;
    }
    
    .lab-image-placeholder i {
        font-size: 3rem;
    }
}

/* AP Bio Curriculum Page Styles */
.ap-bio-hero {
    background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('img/pond.jpg');
    background-size: cover;
    background-position: center bottom;
    background-repeat: no-repeat;
    padding: 140px 0 80px;
    text-align: center;
    margin-top: 60px;
    position: relative;
    color: var(--white);
}

.ap-bio-features {
    padding: 60px 0;
    background: var(--white);
}

.ap-bio-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.ap-bio-feature-box {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    padding: 2rem;
    background: var(--light-gray);
    border-radius: 12px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.ap-bio-feature-box:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.ap-bio-feature-icon {
    width: 60px;
    height: 60px;
    background: var(--primary-blue);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.75rem;
    flex-shrink: 0;
}

.ap-bio-feature-content {
    flex: 1;
}

.ap-bio-feature-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    font-family: 'Montserrat', sans-serif;
}

.ap-bio-feature-description {
    font-size: 1rem;
    color: var(--text-light);
    line-height: 1.6;
    margin: 0;
}

.ap-bio-hero-content {
    max-width: 900px;
    margin: 0 auto;
}

.ap-bio-hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 1.5rem;
    font-family: 'Montserrat', sans-serif;
}

.ap-bio-hero-subtitle {
    font-size: 1.25rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.95);
    max-width: 800px;
    margin: 0 auto;
}

.ap-bio-units {
    padding: 80px 0;
    background-color: var(--white);
}

.ap-bio-unit {
    margin-bottom: 4rem;
    padding-bottom: 3rem;
    border-bottom: 2px solid var(--light-gray);
}

.ap-bio-unit:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.ap-bio-unit-header {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--light-gray);
    border-radius: 12px;
}

.ap-bio-unit-header .lesson-icon {
    width: 50px;
    height: 50px;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.ap-bio-unit-header-content {
    flex: 1;
}

.ap-bio-unit-title {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
    font-family: 'Montserrat', sans-serif;
}

.ap-bio-unit-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.ap-bio-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-dark);
    background: transparent;
    border: 1.5px solid var(--primary-blue);
    border-radius: 20px;
    font-family: 'Inter', sans-serif;
    line-height: 1.4;
    transition: all 0.2s ease;
}

.ap-bio-tag:hover {
    background: var(--primary-blue);
    color: var(--white);
    transform: translateY(-1px);
}

.ap-bio-unit-description {
    font-size: 1.125rem;
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.gallery-label {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.75rem;
    margin-top: 1.5rem;
    font-family: 'Montserrat', sans-serif;
}

.unit-gallery-wrapper {
    margin-top: 1.5rem;
    overflow: hidden;
    position: relative;
    padding: 0 50px;
    max-width: 100%;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.gallery-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: var(--white);
    border: 2px solid var(--primary-blue);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
    transition: all 0.3s ease;
    color: var(--primary-blue);
    font-size: 1.25rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    flex-shrink: 0;
}

.gallery-arrow:hover {
    background: var(--primary-blue);
    color: var(--white);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    transform: translateY(-50%) scale(1.1);
}

.gallery-arrow:active {
    transform: translateY(-50%) scale(0.95);
}

.gallery-arrow-left {
    left: 0;
}

.gallery-arrow-right {
    right: 0;
}

.gallery-arrow.hidden {
    opacity: 0;
    pointer-events: none;
    cursor: default;
}

.unit-gallery {
    display: flex;
    gap: 1rem;
    padding: 0.5rem 0;
    width: max-content;
    overflow-x: auto;
    overflow-y: hidden;
    flex: 1;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.unit-gallery::-webkit-scrollbar {
    display: none;
}

@media (min-width: 769px) {
    .unit-gallery-wrapper {
        max-width: calc((200px + 1rem) * 3 + 100px);
        margin: 0 auto;
    }
    
    .unit-gallery {
        width: max-content;
        overflow-x: hidden;
    }
    
    .gallery-photo {
        flex: 0 0 200px;
        width: 200px;
    }
    
    .gallery-thumbnail {
        width: 200px;
        height: 150px;
    }
}

.gallery-photo {
    cursor: pointer;
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    background: var(--white);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    flex-shrink: 0;
}

.gallery-photo:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.gallery-photo:active {
    transform: scale(0.98);
}

.gallery-thumbnail {
    width: 200px;
    height: 150px;
    object-fit: cover;
    display: block;
    user-select: none;
    -webkit-user-drag: none;
}


.gallery-placeholder {
    background: linear-gradient(135deg, #e0e0e0 0%, #c0c0c0 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #666;
    font-size: 0.875rem;
}

.gallery-placeholder-text {
    text-align: center;
    padding: 0.5rem;
}

/* Gallery Popup/Modal */
.gallery-popup {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: 10000;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    cursor: pointer;
}

.gallery-popup.active {
    display: flex;
}

.gallery-popup-content {
    max-width: 90%;
    max-height: 90%;
    position: relative;
}

.gallery-popup-image {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

.gallery-popup-close {
    position: absolute;
    top: -40px;
    right: 0;
    color: var(--white);
    font-size: 2rem;
    cursor: pointer;
    background: rgba(0, 0, 0, 0.5);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s ease;
}

.gallery-popup-close:hover {
    background: rgba(0, 0, 0, 0.8);
}

@media (max-width: 768px) {
    .unit-gallery-wrapper {
        margin-left: -1.5rem;
        margin-right: -1.5rem;
        padding-left: 60px;
        padding-right: 60px;
        padding-bottom: 1.5rem;
    }
    
    .gallery-arrow {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }
    
    .gallery-arrow-left {
        left: 10px;
    }
    
    .gallery-arrow-right {
        right: 10px;
    }
    
    .unit-gallery {
        gap: 1rem;
        padding: 0.5rem 0;
    }
    
    .gallery-photo {
        width: calc(100vw - 8rem);
        min-width: calc(100vw - 8rem);
        max-width: calc(100vw - 8rem);
    }
    
    .gallery-thumbnail {
        width: 100%;
        height: 250px;
        object-fit: cover;
    }
    
    .gallery-popup-content {
        max-width: 95%;
    }
}

@media (min-width: 769px) {
    .gallery-scroll-hint {
        display: none;
    }
}

.ap-bio-lessons {
    list-style: none;
    padding: 0;
    margin: 0;
}

.ap-bio-lesson-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.25rem;
    margin-bottom: 0.75rem;
    background: var(--light-gray);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.ap-bio-lesson-item:hover {
    background: #e0e4e8;
    transform: translateX(4px);
}

.lesson-icon {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 1.25rem;
}

.lesson-icon-video {
    background-color: #e74c3c;
    color: var(--white);
}

.lesson-icon-3d {
    background-color: var(--primary-blue);
    color: var(--white);
}

.lesson-icon-quiz {
    background-color: var(--success-green);
    color: var(--white);
}

.lesson-icon-default {
    background-color: var(--text-light);
    color: var(--white);
}

.lesson-content {
    flex: 1;
}

.lesson-title {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-dark);
    line-height: 1.5;
}

.lesson-subitems {
    list-style: none;
    padding: 0;
    margin: 0.75rem 0 0 0;
}

.lesson-subitem {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    margin-top: 0.5rem;
    background: var(--white);
    border-radius: 8px;
    border-left: 3px solid var(--success-green);
}

.lesson-subitem .lesson-icon {
    width: 32px;
    height: 32px;
    font-size: 1rem;
}

.lesson-subitem .lesson-title {
    font-size: 0.95rem;
    color: var(--text-light);
}

/* Responsive Design for AP Bio Page */
@media (max-width: 1024px) {
    .ap-bio-hero-title {
        font-size: 2.5rem;
    }
    
    .ap-bio-hero-subtitle {
        font-size: 1.125rem;
    }
    
    .ap-bio-unit-title {
        font-size: 1.875rem;
    }
}

@media (max-width: 768px) {
    .ap-bio-hero {
        padding: 120px 0 60px;
    }
    
    .ap-bio-hero-title {
        font-size: 2rem;
    }
    
    .ap-bio-hero-subtitle {
        font-size: 1rem;
    }
    
    .ap-bio-features {
        padding: 40px 0;
    }
    
    .ap-bio-features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 0 1rem;
    }
    
    .ap-bio-feature-box {
        padding: 1.5rem;
        gap: 1rem;
    }
    
    .ap-bio-feature-icon {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }
    
    .ap-bio-feature-title {
        font-size: 1.5rem;
    }
    
    .ap-bio-feature-description {
        font-size: 0.95rem;
    }
    
    .ap-bio-units {
        padding: 60px 0;
    }
    
    .ap-bio-unit {
        margin-bottom: 3rem;
        padding-bottom: 2rem;
    }
    
    .ap-bio-unit-title {
        font-size: 1.5rem;
    }
    
    .ap-bio-unit-tags {
        gap: 0.4rem;
        margin-bottom: 0.75rem;
    }
    
    .ap-bio-tag {
        font-size: 0.7rem;
        padding: 0.2rem 0.6rem;
    }
    
    .gallery-label {
        font-size: 0.9rem;
        margin-top: 1rem;
        margin-bottom: 0.5rem;
    }
    
    .ap-bio-unit-description {
        font-size: 1rem;
    }
    
    .ap-bio-unit-header {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }
    
    .ap-bio-unit-header .lesson-icon {
        width: 40px;
        height: 40px;
        font-size: 1.25rem;
    }
    
    .ap-bio-lesson-item {
        padding: 1rem;
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .ap-bio-lesson-item .lesson-icon {
        width: 35px;
        height: 35px;
        font-size: 1.1rem;
    }
    
    .lesson-title {
        font-size: 0.95rem;
        line-height: 1.4;
    }
    
    .lesson-subitems {
        margin-top: 0.5rem;
    }
    
    .lesson-subitem {
        font-size: 0.875rem;
        padding: 0.5rem 0;
    }
    
    .gallery-scroll-hint {
        font-size: 0.8rem;
    }
}