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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

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

/* Language Toggle */
.hidden {
    display: none !important;
}

/* Header */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.5rem;
    color: #2d5a87;
}

.logo img {
    width: 40px;
    height: 40px;
}

.nav-menu {
    display: flex;
    gap: 30px;
}

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

.nav-menu a:hover {
    color: #2d5a87;
}

.spanish-link {
    color: #e67e22 !important;
}

.lang-btn {
    background: #2d5a87;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    font-weight: 500;
    transition: background 0.3s;
}

.lang-btn:hover {
    background: #1a3a5c;
}

/* Hero Section */
.hero {
    margin-top: 70px;
    padding: 60px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.trust-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 30px;
}

.trust-item {
    background: #2d5a87;
    color: white;
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    color: #2d5a87;
    margin-bottom: 30px;
    line-height: 1.2;
}

.quick-answer-box {
    background: white;
    border-left: 4px solid #27ae60;
    padding: 25px;
    margin-bottom: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.quick-answer-box h3 {
    color: #27ae60;
    margin-bottom: 15px;
    font-weight: 600;
}

.hero-cta {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.btn-primary {
    background: #2d5a87;
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 1.1rem;
}

.btn-primary:hover {
    background: #1a3a5c;
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: #2d5a87;
    border: 2px solid #2d5a87;
    padding: 15px 30px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 1.1rem;
}

.btn-secondary:hover {
    background: #2d5a87;
    color: white;
}

.hero-image {
    position: relative;
}

.hero-image img {
    width: 100%;
    border-radius: 15px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.hero-stats {
    position: absolute;
    bottom: 20px;
    left: 20px;
    display: flex;
    gap: 20px;
}

.stat {
    background: rgba(255, 255, 255, 0.95);
    padding: 15px 20px;
    border-radius: 10px;
    text-align: center;
    backdrop-filter: blur(10px);
}

.stat-number {
    display: block;
    font-size: 1.8rem;
    font-weight: 700;
    color: #2d5a87;
}

.stat-label {
    font-size: 0.9rem;
    color: #666;
}

/* Sections */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #2d5a87;
    text-align: center;
    margin-bottom: 50px;
}

/* Science Section */
.science-section {
    padding: 80px 0;
    background: white;
}

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

.science-card {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 15px;
    border-left: 4px solid #27ae60;
    transition: transform 0.3s;
}

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

.science-card h3 {
    color: #2d5a87;
    margin-bottom: 15px;
    font-weight: 600;
}

.study-link {
    color: #27ae60;
    text-decoration: none;
    font-weight: 500;
    display: inline-block;
    margin-top: 15px;
}

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

/* Comparison Section */
.comparison-section {
    padding: 80px 0;
    background: #f8f9fa;
}

.comparison-table {
    overflow-x: auto;
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.comparison-table table {
    width: 100%;
    border-collapse: collapse;
}

.comparison-table th,
.comparison-table td {
    padding: 20px;
    text-align: left;
    border-bottom: 1px solid #eee;
}

.comparison-table th {
    background: #2d5a87;
    color: white;
    font-weight: 600;
}

.comparison-table .highlight {
    background: #e8f5e8;
    font-weight: 600;
    color: #27ae60;
}

/* Quiz Section */
.quiz-section {
    padding: 80px 0;
    background: white;
}

.quiz-container {
    max-width: 800px;
    margin: 0 auto;
    background: #f8f9fa;
    padding: 40px;
    border-radius: 15px;
}

.quiz-question h3 {
    color: #2d5a87;
    margin-bottom: 25px;
    font-size: 1.5rem;
    text-align: center;
}

.quiz-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

.quiz-option {
    background: white;
    border: 2px solid #ddd;
    padding: 20px;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 500;
}

.quiz-option:hover {
    border-color: #2d5a87;
    background: #e8f4f8;
}

.quiz-option.selected {
    background: #2d5a87;
    color: white;
    border-color: #2d5a87;
}

/* Lab Section */
.lab-section {
    padding: 80px 0;
    background: #f8f9fa;
}

.lab-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
}

.lab-card {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.lab-card h3 {
    color: #2d5a87;
    margin-bottom: 20px;
    font-weight: 600;
}

.video-placeholder {
    background: #000;
    color: white;
    padding: 60px 20px;
    border-radius: 10px;
    text-align: center;
    position: relative;
}

.play-btn {
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid white;
    color: white;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    margin-top: 15px;
    transition: all 0.3s;
}

.play-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

.report-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.report-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 8px;
}

.download-link {
    color: #27ae60;
    text-decoration: none;
    font-weight: 500;
}

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

/* FAQ Section */
.faq-section {
    padding: 80px 0;
    background: white;
}

.faq-grid {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: #f8f9fa;
    margin-bottom: 15px;
    border-radius: 10px;
    overflow: hidden;
}

.faq-question {
    padding: 25px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #2d5a87;
    font-weight: 600;
    background: white;
    border-bottom: 1px solid #eee;
}

.faq-toggle {
    font-size: 1.5rem;
    font-weight: 300;
}

.faq-answer {
    padding: 0 25px;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s;
}

.faq-item.active .faq-answer {
    padding: 25px;
    max-height: 200px;
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
}

/* Footer */
.footer {
    background: #2d5a87;
    color: white;
    padding: 60px 0 30px;
}

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

.footer-section h3,
.footer-section h4 {
    margin-bottom: 20px;
    color: #fff;
}

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

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

.footer-section ul li a {
    color: #bbb;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section ul li a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid #3a6b9a;
    padding-top: 30px;
    text-align: center;
    color: #bbb;
}

.last-updated {
    margin-top: 10px;
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .nav-menu {
        display: none;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .trust-bar {
        justify-content: center;
    }
    
    .hero-stats {
        position: static;
        justify-content: center;
        margin-top: 20px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.8rem;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .quiz-options {
        grid-template-columns: 1fr;
    }
    
    .lab-grid {
        grid-template-columns: 1fr;
    }
}