/* 
 * Atomic Flat - Main Stylesheet
 * Clean, vintage-inspired design for design professionals
 */

:root {
    --color-primary: #2c2c2c;
    --color-secondary: #8b7355;
    --color-accent: #d4af37;
    --color-bg: #fafaf8;
    --color-white: #ffffff;
    --color-gray-light: #e8e8e6;
    --color-gray: #999;
    --color-text: #2c2c2c;
    --color-text-light: #666;
    
    --font-serif: 'Didot', 'Bodoni MT', 'Playfair Display', Georgia, serif;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
}

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

html {
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    font-weight: 400;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: 3rem;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 2.25rem;
    letter-spacing: -0.01em;
}

h3 {
    font-size: 1.5rem;
}

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

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

a:hover {
    color: var(--color-secondary);
}

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

.container-wide {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Header */
.site-header {
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-gray-light);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.site-logo {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    letter-spacing: 0.05em;
    color: var(--color-primary);
    text-transform: uppercase;
}

.main-nav ul {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.main-nav a {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 500;
}

/* Hero Section */
.hero {
    padding: var(--spacing-xl) 0;
    text-align: center;
    background-color: var(--color-white);
}

.hero h1 {
    margin-bottom: var(--spacing-md);
}

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

.hero .btn {
    margin-top: var(--spacing-md);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    font-size: 0.875rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border: 1px solid var(--color-primary);
    background-color: var(--color-primary);
    color: var(--color-white);
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.btn-secondary {
    background-color: transparent;
    color: var(--color-primary);
}

.btn-secondary:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
}

/* Product Grid */
.products-section {
    padding: var(--spacing-xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.products-filters {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.5rem 1.5rem;
    font-size: 0.875rem;
    background-color: transparent;
    border: 1px solid var(--color-gray-light);
    color: var(--color-text);
    cursor: pointer;
    transition: all 0.2s ease;
}

.filter-btn:hover,
.filter-btn.active {
    border-color: var(--color-primary);
    background-color: var(--color-primary);
    color: var(--color-white);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.product-card {
    background-color: var(--color-white);
    transition: transform 0.2s ease;
}

.product-card:hover {
    transform: translateY(-4px);
}

.product-image {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    display: block;
    background-color: var(--color-gray-light);
}

.product-info {
    padding: var(--spacing-sm);
}

.product-title {
    font-size: 0.9rem;
    line-height: 1.4;
    margin-bottom: var(--spacing-xs);
    font-family: var(--font-sans);
    font-weight: 400;
    color: var(--color-text);
}

.product-price {
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--color-secondary);
}

/* Product Detail Page */
.product-detail {
    padding: var(--spacing-lg) 0;
}

.product-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.product-gallery {
    position: sticky;
    top: 100px;
    align-self: start;
}

.product-main-image {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    margin-bottom: var(--spacing-sm);
}

.product-details h1 {
    margin-bottom: var(--spacing-sm);
}

.product-meta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-gray-light);
}

.product-description {
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.shipping-notice {
    background-color: var(--color-gray-light);
    padding: var(--spacing-md);
    margin: var(--spacing-md) 0;
    font-size: 0.875rem;
}

.shipping-notice strong {
    display: block;
    margin-bottom: var(--spacing-xs);
}

/* Contact Section */
.contact-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-white);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.contact-info h3 {
    margin-bottom: var(--spacing-md);
}

.contact-info p {
    margin-bottom: var(--spacing-sm);
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 0.875rem;
    margin-bottom: var(--spacing-sm);
    border: 1px solid var(--color-gray-light);
    font-family: var(--font-sans);
    font-size: 1rem;
}

.contact-form textarea {
    min-height: 150px;
    resize: vertical;
}

/* Footer */
.site-footer {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-lg) 0 var(--spacing-md);
    margin-top: var(--spacing-xl);
}

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

.footer-section h4 {
    margin-bottom: var(--spacing-sm);
    color: var(--color-accent);
}

.footer-section a {
    color: var(--color-white);
    opacity: 0.8;
}

.footer-section a:hover {
    opacity: 1;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 0.875rem;
    opacity: 0.7;
}

/* Responsive */
@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    .header-content {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: var(--spacing-md);
    }
    
    .product-layout,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .product-gallery {
        position: static;
    }
    
    .main-nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--spacing-sm);
    }
}

/* Utility Classes */
.text-center {
    text-align: center;
}

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

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

.mb-lg {
    margin-bottom: var(--spacing-lg);
}

.mt-lg {
    margin-top: var(--spacing-lg);
}