/* CSS Variables */
:root {
    --color-navy: #1e3a5f;
    --color-teal: #2dd4bf;
    --color-amber: #f59e0b;
    --color-white: #ffffff;
    --color-light-gray: #f8fafc;
    --color-gray: #64748b;
    --color-dark-gray: #334155;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-display: 'Inter', sans-serif;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

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

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--color-dark-gray);
    background-color: var(--color-white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    color: var(--color-navy);
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

p {
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
}

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

a:hover {
    text-decoration: underline;
}

/* Brand/Logo */
.brand {
    margin-bottom: var(--spacing-xl);
}

.logo-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.logo {
    flex-shrink: 0;
}

.brand-name {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-navy);
    margin: 0;
}

.tagline {
    font-size: 1.1rem;
    color: var(--color-gray);
    margin: 0;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-dark-gray) 100%);
    color: var(--color-white);
    padding: var(--spacing-2xl) 0;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(90deg, transparent 24%, rgba(45, 212, 191, 0.05) 25%, rgba(45, 212, 191, 0.05) 26%, transparent 27%, transparent 74%, rgba(45, 212, 191, 0.05) 75%, rgba(45, 212, 191, 0.05) 76%, transparent 77%, transparent),
        linear-gradient(transparent 24%, rgba(45, 212, 191, 0.05) 25%, rgba(45, 212, 191, 0.05) 26%, transparent 27%, transparent 74%, rgba(45, 212, 191, 0.05) 75%, rgba(45, 212, 191, 0.05) 76%, transparent 77%, transparent);
    background-size: 20px 20px;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.hero .brand-name {
    color: var(--color-white);
}

.hero .tagline {
    color: var(--color-teal);
}

.hero-text h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-white);
}

.hero-text p {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    max-width: 600px;
}

/* Section Styles */
section {
    padding: var(--spacing-2xl) 0;
}

.centered-content {
    text-align: center;
}

.centered-content .container > * {
    margin-left: auto;
    margin-right: auto;
}

.section-intro {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--color-gray);
}

/* About Section */
.about {
    background-color: var(--color-light-gray);
}

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

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.feature {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
}

.feature-icon {
    margin-bottom: var(--spacing-md);
}

.feature h3 {
    margin-bottom: var(--spacing-sm);
}

/* Collections Section */
.collections-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.collection-card {
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.collection-image {
    height: 200px;
    background: linear-gradient(135deg, var(--color-teal), var(--color-amber));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-weight: 600;
    text-align: center;
    padding: var(--spacing-md);
}

.collection-card h3 {
    padding: var(--spacing-md) var(--spacing-md) 0;
}

.collection-card p {
    padding: 0 var(--spacing-md) var(--spacing-md);
    color: var(--color-gray);
}

/* Digital Archives Section */
.digital-archives {
    background: var(--color-navy);
    color: var(--color-white);
}

.digital-archives h2 {
    color: var(--color-white);
}

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

.archives-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-teal);
    line-height: 1;
}

.stat-label {
    display: block;
    margin-top: var(--spacing-xs);
    color: rgba(255, 255, 255, 0.8);
}

/* Interviews Section */
.interviews {
    background-color: var(--color-light-gray);
}

.interviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.interview-card {
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow);
}

.interview-image {
    height: 120px;
    background: linear-gradient(135deg, var(--color-amber), var(--color-teal));
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-weight: 600;
    text-align: center;
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm);
}

/* Education Section */
.education-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.education-text ul {
    list-style: none;
    padding-left: 0;
}

.education-text li {
    padding: var(--spacing-xs) 0;
    position: relative;
    padding-left: var(--spacing-md);
}

.education-text li::before {
    content: '▶';
    color: var(--color-teal);
    position: absolute;
    left: 0;
}

.education-image {
    height: 300px;
    background: linear-gradient(135deg, var(--color-navy), var(--color-teal));
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-weight: 600;
    text-align: center;
    padding: var(--spacing-md);
}

/* Products Section */
.products {
    background-color: var(--color-light-gray);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.product-card {
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
}

.product-card h3 {
    color: var(--color-navy);
    margin-bottom: var(--spacing-sm);
}

.product-card ul {
    list-style: none;
    margin: var(--spacing-md) 0;
    padding-left: 0;
}

.product-card li {
    padding: var(--spacing-xs) 0;
    position: relative;
    padding-left: var(--spacing-md);
    color: var(--color-gray);
}

.product-card li::before {
    content: '✓';
    color: var(--color-success);
    position: absolute;
    left: 0;
    font-weight: bold;
}

.product-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-navy);
    margin: var(--spacing-md) 0;
    text-align: center;
}

.product-btn {
    background: var(--color-teal);
    color: var(--color-white);
    border: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    width: 100%;
    margin-top: var(--spacing-md);
}

.product-btn:hover {
    background: var(--color-navy);
}

/* Research Access Section */
.research-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.research-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.research-feature {
    padding: var(--spacing-lg);
    background: var(--color-light-gray);
    border-radius: var(--border-radius-lg);
    border-left: 4px solid var(--color-teal);
}

/* Contacts Section */
.contacts {
    background: var(--color-navy);
    color: var(--color-white);
}

.contacts h2 {
    color: var(--color-white);
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    max-width: 800px;
    margin: 0 auto;
}

.contact-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.contact-icon {
    flex-shrink: 0;
    background: var(--color-teal);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
}

.contact-text h3 {
    color: var(--color-white);
    margin-bottom: var(--spacing-xs);
}

.contact-text p {
    color: rgba(255, 255, 255, 0.9);
    margin: 0;
}

/* Footer */
.footer {
    background: var(--color-dark-gray);
    color: var(--color-white);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-xl);
}

.footer-brand {
    flex: 1;
    max-width: 400px;
}

.footer-links {
    display: flex;
    gap: var(--spacing-xl);
}

.footer-section {
    min-width: 150px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.footer-logo span {
    font-size: 1.25rem;
    font-weight: 600;
}

.footer-section h3 {
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

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

.footer-section ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
}

.footer-section ul li a:hover {
    color: var(--color-teal);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: var(--spacing-lg);
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal-content {
    background-color: var(--color-white);
    margin: 5% auto;
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    width: 90%;
    max-width: 500px;
    position: relative;
}

.close {
    position: absolute;
    right: var(--spacing-md);
    top: var(--spacing-md);
    font-size: 2rem;
    font-weight: bold;
    color: var(--color-gray);
    cursor: pointer;
}

.close:hover {
    color: var(--color-navy);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    color: var(--color-navy);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 2px solid #e5e7eb;
    border-radius: var(--border-radius);
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-teal);
}

#orderForm button[type="submit"] {
    background: var(--color-teal);
    color: var(--color-white);
    border: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    width: 100%;
}

#orderForm button[type="submit"]:hover {
    background: var(--color-navy);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-text h2 {
        font-size: 2rem;
    }
    
    .brand-name {
        font-size: 2rem;
    }
    
    .education-content {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        gap: var(--spacing-xl);
    }
    
    .footer-links {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    
    .features-grid,
    .collections-grid,
    .interviews-grid,
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .archives-stats {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .contact-info {
        grid-template-columns: 1fr;
    }
}