:root {
    /* Light Theme Variables */
    --bg-color: #f8fafc;
    --text-color: #1e293b;
    --card-bg: #ffffff;
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --secondary-color: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.3);
}

[data-theme="dark"] {
    /* Dark Theme Variables */
    --bg-color: #0f172a;
    --text-color: #f8fafc;
    --card-bg: #1e293b;
    --primary-color: #3b82f6;
    --primary-hover: #60a5fa;
    --secondary-color: #94a3b8;
    --border-color: #334155;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.5), 0 2px 4px -2px rgb(0 0 0 / 0.5);
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(30, 41, 59, 0.3);
}

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

body {
    font-family: 'Inter', 'Tajawal', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s ease, color 0.3s ease;
    line-height: 1.6;
}

a {
    text-decoration: none;
}

/* RTL Support */
[dir="rtl"] {
    font-family: 'Tajawal', 'Inter', sans-serif;
}

/* Glassmorphism Header */
header {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 1.5rem;
}

nav a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s ease;
}

nav a:hover {
    color: var(--primary-color);
}

.controls {
    display: flex;
    gap: 1rem;
    align-items: center;
}

select, button, .btn {
    padding: 0.5rem 1rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: var(--card-bg);
    color: var(--text-color);
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
    border: none;
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
}

/* Grid System */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
}

/* Product Card */
.product-card {
    background: var(--card-bg);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px -5px rgb(0 0 0 / 0.2);
}

.product-img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    background: #f1f5f9;
}

.product-info {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.product-title {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.product-price {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: bold;
    margin-bottom: 1rem;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.animate-fade-in {
    animation: fadeIn 0.5s ease-out forwards;
}

/* Lazyload image styling */
img[data-src] {
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
}
img.lazyloaded {
    opacity: 1;
}

/* Responsive */
@media (max-width: 768px) {
    header {
        flex-direction: column;
        gap: 1rem;
    }
    nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }
}