/* ===================================
   Modern Glassmorphism Design System
   =================================== */

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

body {
    background: linear-gradient(135deg, #fafafa 0%, #f0f0f0 100%);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-weight: var(--font-weight-normal);
    line-height: 1.6;
    min-height: 100vh;
    transition: background-color var(--transition-base), color var(--transition-base);
}

a {
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-fast);
}

ul {
    list-style: none;
}

/* Utilities */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* Header */
.site-header {
    padding: var(--space-lg) 0;
    margin-bottom: var(--space-xl);
    background: var(--bg-glass);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-bottom: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
    letter-spacing: -1px;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-link {
    margin-left: var(--space-md);
    font-weight: var(--font-weight-medium);
    position: relative;
    opacity: 0.7;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    opacity: 1;
    transform: translateY(-1px);
}

.intro-text {
    margin-bottom: var(--space-lg);
    font-size: 1.125rem;
    color: var(--text-secondary);
    font-style: italic;
    text-align: center;
    font-weight: var(--font-weight-normal);
}

/* Grid Layout */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-lg);
    padding-bottom: var(--space-xl);
}

/* Product Card - Glassmorphism */
.product-card {
    cursor: pointer;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-glass);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
}

.product-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--glass-shadow-hover);
}

.product-image-wrapper {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    aspect-ratio: 4/3;
    overflow: hidden;
    position: relative;
}

.product-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform var(--transition-slow);
}

.product-card:hover .product-image {
    transform: scale(1.05);
}

.product-info {
    padding: var(--space-md);
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.product-name {
    font-size: 1.125rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-xs);
    color: var(--text-primary);
}

.product-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9375rem;
    color: var(--text-secondary);
    margin-top: var(--space-sm);
}

.product-price {
    font-weight: var(--font-weight-semibold);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.125rem;
}

.product-status {
    font-size: 0.875rem;
    padding: var(--space-xs) var(--space-sm);
    background: rgba(102, 126, 234, 0.1);
    border-radius: var(--radius-sm);
    color: var(--accent-primary);
    font-weight: var(--font-weight-medium);
}

.loading {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--space-xl);
    color: var(--text-secondary);
    font-weight: var(--font-weight-medium);
}

/* Footer */
.site-footer {
    text-align: center;
    padding: var(--space-lg);
    margin-top: auto;
    font-size: 0.875rem;
    color: var(--text-muted);
    background: var(--bg-glass);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-top: 1px solid var(--glass-border);
}

/* Responsive Design */
@media (max-width: 768px) {
    .product-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: var(--space-md);
    }

    .logo {
        font-size: 1.5rem;
    }

    .intro-text {
        font-size: 1rem;
    }

    .site-header {
        padding: var(--space-md) 0;
    }
}

/* Dark Mode Enhancements */
@media (prefers-color-scheme: dark) {
    body {
        background: linear-gradient(135deg, #0f0f0f 0%, #1a1a1a 100%);
    }

    .product-image-wrapper {
        background: linear-gradient(135deg, rgba(102, 126, 234, 0.2) 0%, rgba(118, 75, 162, 0.2) 100%);
    }

    .product-info {
        background: rgba(26, 26, 26, 0.6);
    }
}