:root {
    /* Colors - Editorial Theme */
    --bg-cream: #f4f4f0;
    --bg-dark: #1a1a1a;
    --text-dark: #1a1a1a;
    --text-light: #f4f4f0;
    --accent-gold: #d4af37;
    /* Subtle gold accent */
    --gray-soft: #e5e5e0;

    /* Typography */
    --font-serif: 'Playfair Display', serif;
    --font-sans: 'Inter', sans-serif;

    /* Spacing */
    --container-width: 1200px;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;
}

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

body {
    background-color: var(--bg-cream);
    color: var(--text-dark);
    font-family: var(--font-sans);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-serif);
    font-weight: 400;
    line-height: 1.2;
}

em {
    font-style: italic;
    font-family: var(--font-serif);
}

a {
    text-decoration: none;
    color: inherit;
    transition: opacity 0.3s ease;
}

ul {
    list-style: none;
}

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

/* Navbar */
.navbar {
    padding: var(--spacing-md) 0;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(244, 244, 240, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

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

.logo {
    font-family: var(--font-sans);
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.04em;
    text-transform: uppercase;
}

.nav-links {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-links a {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 500;
}

.btn-nav {
    border: 1px solid var(--text-dark);
    padding: 0.5rem 1.5rem;
    border-radius: 2px;
}

.btn-nav:hover {
    background-color: var(--text-dark);
    color: var(--bg-cream);
}

/* Hero Section */
.hero {
    padding: 180px 0 100px;
    min-height: 80vh;
    display: flex;
    align-items: center;
    background-color: var(--bg-cream);
}

.hero-content {
    max-width: 800px;
}

.hero-title {
    font-size: 4.5rem;
    margin-bottom: var(--spacing-md);
    max-width: 900px;
}

.hero-subtitle {
    font-size: 1.25rem;
    max-width: 600px;
    margin-bottom: var(--spacing-lg);
    color: #4a4a4a;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-md);
}

.btn {
    padding: 1rem 2rem;
    font-size: 1rem;
    border-radius: 2px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: var(--text-dark);
    color: var(--bg-cream);
    border: 1px solid var(--text-dark);
}

.btn-primary:hover {
    background-color: transparent;
    color: var(--text-dark);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-dark);
    border: 1px solid var(--text-dark);
}

.btn-secondary:hover {
    background-color: var(--gray-soft);
}

/* Features Section */
.features {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-dark);
    color: var(--text-light);
    text-align: center;
}

.section-header h2 {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-lg);
}

.hierarchy-visual {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    margin-top: var(--spacing-lg);
}

.pyramid-level {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text-light);
    padding: 1.5rem;
    border-radius: 8px;
    font-family: var(--font-sans);
    font-weight: 500;
    transition: all 0.3s ease;
    cursor: default;
}

.pyramid-level:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--text-light);
}

/* Pyramid Widths */
.level-1 {
    width: 300px;
}

.level-2 {
    width: 450px;
}

.level-3 {
    width: 600px;
}

.level-4 {
    width: 750px;
}

.level-5 {
    width: 900px;
}

/* Products Section */
.products-section {
    padding: var(--spacing-xl) 0;
    background-color: #fff;
    /* Slightly lighter than cream for contrast */
    color: var(--text-dark);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.product-card {
    padding: 2rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.product-card:hover {
    border-color: var(--text-dark);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.product-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0;
    font-family: var(--font-serif);
}

/* Blog Section */
.blog-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-cream);
    color: var(--text-dark);
    min-height: 400px;
}

.blog-placeholder {
    text-align: center;
    padding: 4rem;
    border: 1px dashed #ccc;
    border-radius: 4px;
    color: #888;
    font-style: italic;
}

/* Footer */
footer {
    padding: var(--spacing-xl) 0;
    border-top: 1px solid #ddd;
    background-color: var(--bg-cream);
    color: var(--text-dark);
}

.footer-content {
    display: flex;
    justify-content: space-between;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    :root {
        --spacing-lg: 2rem;
        --spacing-xl: 4rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: var(--bg-cream);
        flex-direction: column;
        justify-content: center;
        transform: translateX(100%);
        transition: transform 0.3s ease-in-out;
        gap: 2rem;
        border-top: 1px solid rgba(0, 0, 0, 0.05);
    }

    .nav-links.active {
        transform: translateX(0);
    }

    .mobile-menu-btn {
        display: block;
        background: none;
        border: none;
        cursor: pointer;
        padding: 0.5rem;
    }

    .hamburger {
        display: block;
        width: 24px;
        height: 2px;
        background-color: var(--text-dark);
        position: relative;
        transition: all 0.3s ease;
    }

    .hamburger::before,
    .hamburger::after {
        content: '';
        position: absolute;
        width: 24px;
        height: 2px;
        background-color: var(--text-dark);
        transition: all 0.3s ease;
    }

    .hamburger::before {
        top: -8px;
    }

    .hamburger::after {
        top: 8px;
    }

    .mobile-menu-btn.active .hamburger {
        background-color: transparent;
    }

    .mobile-menu-btn.active .hamburger::before {
        transform: rotate(45deg);
        top: 0;
    }

    .mobile-menu-btn.active .hamburger::after {
        transform: rotate(-45deg);
        top: 0;
    }

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

    .pyramid-level {
        width: 100% !important;
        /* Override specific widths */
        max-width: 300px;
    }

    .footer-content {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }

    .hero-actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        text-align: center;
    }
}

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

/* Research Section */
.research-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-dark);
    color: var(--text-light);
}

.research-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: var(--spacing-lg);
}

.research-card {
    background: rgba(255, 255, 255, 0.05);
    padding: 2rem;
    border-radius: 4px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.research-card:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-5px);
}

.research-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(212, 175, 55, 0.2);
    color: var(--accent-gold);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
    border-radius: 2px;
}

.research-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-light);
}

.research-card p {
    color: rgba(255, 255, 255, 0.6);
}

/* Contact Section */
.contact-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-cream);
    border-top: 1px solid #ddd;
}

.contact-container {
    display: flex;
    justify-content: center;
    text-align: center;
}

.contact-content {
    max-width: 600px;
}

.contact-content h2 {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-md);
}

.contact-content p {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    color: #4a4a4a;
}