/* CSS Reset & Variables */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    /* Colors */
    --color-background: #0a0a0a;
    --color-surface: #141414;
    --color-surface-hover: #1a1a1a;
    --color-border: #262626;
    --color-text-primary: #fafafa;
    --color-text-secondary: #a1a1a1;
    --color-text-muted: #737373;
    --color-accent: #ee4d2d;
    --color-accent-hover: #d73211;
    --color-success: #22c55e;
    --color-warning: #f59e0b;
    --color-badge-hot: #ef4444;
    --color-badge-new: #3b82f6;
    --color-badge-sale: #f59e0b;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-background);
    color: var(--color-text-primary);
    line-height: 1.5;
    min-height: 100vh;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, select {
    font-family: inherit;
}

/* Container */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Header */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    gap: var(--spacing-md);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--color-text-primary);
    flex-shrink: 0;
}

.logo svg {
    color: var(--color-accent);
}

.nav {
    display: flex;
    align-items: center;
}

.nav-toggle {
    display: flex;
    padding: var(--spacing-sm);
    color: var(--color-text-primary);
}

.nav-menu {
    display: none;
    list-style: none;
    gap: var(--spacing-xs);
}

.nav-link {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-text-primary);
    background-color: var(--color-surface);
}

.search-container {
    position: relative;
    display: none;
}

.search-input {
    width: 200px;
    padding: var(--spacing-sm) var(--spacing-md);
    padding-left: 40px;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    color: var(--color-text-primary);
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.search-input::placeholder {
    color: var(--color-text-muted);
}

.search-input:focus {
    outline: none;
    border-color: var(--color-accent);
    background-color: var(--color-surface-hover);
}

.search-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    pointer-events: none;
}

/* Mobile Nav Menu */
.nav-menu.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background-color: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-md);
    gap: var(--spacing-xs);
}

/* Hero Section */
.hero {
    padding: var(--spacing-xl) 0;
    text-align: center;
    background: linear-gradient(180deg, var(--color-surface) 0%, var(--color-background) 100%);
}

.hero h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
}

/* Filter Section */
.filter-section {
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-border);
}

.filter-section .container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.filter-tags {
    display: flex;
    gap: var(--spacing-sm);
    overflow-x: auto;
    padding-bottom: var(--spacing-sm);
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.filter-tags::-webkit-scrollbar {
    display: none;
}

.filter-tag {
    flex-shrink: 0;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-surface);
    color: var(--color-text-secondary);
    font-size: 0.8125rem;
    font-weight: 500;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: all var(--transition-fast);
}

.filter-tag:hover {
    background-color: var(--color-surface-hover);
    color: var(--color-text-primary);
}

.filter-tag.active {
    background-color: var(--color-accent);
    color: white;
    border-color: var(--color-accent);
}

.sort-container {
    display: flex;
    align-items: center;
}

.sort-select {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: 0.8125rem;
    cursor: pointer;
}

.sort-select:focus {
    outline: none;
    border-color: var(--color-accent);
}

/* Main Content */
.main {
    padding: var(--spacing-lg) 0 var(--spacing-2xl);
}

/* Products Grid - Mobile First (List View) */
.products-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

/* Product Card - Mobile (Horizontal Layout) */
.product-card {
    display: flex;
    background-color: var(--color-surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: all var(--transition-normal);
}

.product-card:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.product-image-container {
    position: relative;
    flex-shrink: 0;
    width: 120px;
    height: 120px;
}

.product-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-badge {
    position: absolute;
    top: var(--spacing-sm);
    left: var(--spacing-sm);
    padding: 2px 6px;
    font-size: 0.625rem;
    font-weight: 600;
    text-transform: uppercase;
    border-radius: var(--radius-sm);
    color: white;
}

.product-badge.hot {
    background-color: var(--color-badge-hot);
}

.product-badge.new {
    background-color: var(--color-badge-new);
}

.product-badge.sale {
    background-color: var(--color-badge-sale);
}

.product-platform {
    position: absolute;
    bottom: var(--spacing-sm);
    left: var(--spacing-sm);
    padding: 2px 6px;
    font-size: 0.625rem;
    font-weight: 500;
    background-color: rgba(0, 0, 0, 0.7);
    color: white;
    border-radius: var(--radius-sm);
}

.product-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: var(--spacing-sm) var(--spacing-md);
    min-width: 0;
}

.product-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-primary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.4;
    margin-bottom: var(--spacing-xs);
    transition: color var(--transition-fast);
}

.product-card:hover .product-title {
    color: var(--color-accent);
}

.product-snippet {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.4;
    margin-bottom: auto;
}

.product-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.product-price {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-accent);
}

.product-original-price {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-decoration: line-through;
}

.product-discount {
    font-size: 0.625rem;
    font-weight: 600;
    padding: 2px 4px;
    background-color: rgba(238, 77, 45, 0.15);
    color: var(--color-accent);
    border-radius: var(--radius-sm);
}

.product-stats {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-sm);
    font-size: 0.6875rem;
    color: var(--color-text-muted);
}

.product-stat {
    display: flex;
    align-items: center;
    gap: 4px;
}

.product-stat svg {
    width: 12px;
    height: 12px;
}

/* Product Link */
.product-link {
    text-decoration: none;
    color: inherit;
    display: flex;
    width: 100%;
}

/* Load More Button */
.load-more-container {
    display: flex;
    justify-content: center;
    margin-top: var(--spacing-xl);
}

.load-more-btn {
    padding: var(--spacing-md) var(--spacing-xl);
    background-color: var(--color-surface);
    color: var(--color-text-primary);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: all var(--transition-fast);
}

.load-more-btn:hover {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
}

.load-more-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Footer */
.footer {
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-xl) 0;
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.footer-brand .logo {
    margin-bottom: var(--spacing-md);
}

.footer-brand p {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    max-width: 300px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
}

.footer-column h4 {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

.footer-column ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-column a {
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.footer-column a:hover {
    color: var(--color-accent);
}

.footer-bottom {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.affiliate-disclosure {
    margin-top: var(--spacing-sm);
    font-style: italic;
}

/* Tablet Styles */
@media (min-width: 640px) {
    .hero h1 {
        font-size: 2.25rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .product-image-container {
        width: 140px;
        height: 140px;
    }

    .product-title {
        font-size: 0.9375rem;
    }

    .product-snippet {
        font-size: 0.8125rem;
    }

    .filter-section .container {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }

    .filter-tags {
        padding-bottom: 0;
    }
}

/* Desktop Styles */
@media (min-width: 768px) {
    .nav-toggle {
        display: none;
    }

    .nav-menu {
        display: flex;
        position: static;
        flex-direction: row;
        background: none;
        border: none;
        padding: 0;
    }

    .search-container {
        display: block;
    }

    /* Grid Layout for Desktop */
    .products-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }

    /* Vertical Card Layout for Desktop */
    .product-card {
        flex-direction: column;
    }

    .product-link {
        flex-direction: column;
    }

    .product-image-container {
        width: 100%;
        height: 200px;
    }

    .product-content {
        padding: var(--spacing-md);
    }

    .product-title {
        font-size: 0.9375rem;
        -webkit-line-clamp: 2;
    }

    .product-snippet {
        font-size: 0.8125rem;
        -webkit-line-clamp: 2;
    }

    .product-price {
        font-size: 1.125rem;
    }

    .product-original-price {
        font-size: 0.8125rem;
    }

    .product-discount {
        font-size: 0.75rem;
    }

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

    .footer-links {
        gap: var(--spacing-2xl);
    }
}

/* Large Desktop */
@media (min-width: 1024px) {
    .products-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .search-input {
        width: 280px;
    }

    .hero {
        padding: var(--spacing-2xl) 0;
    }

    .hero h1 {
        font-size: 2.75rem;
    }

    .product-image-container {
        height: 220px;
    }

    .product-title {
        font-size: 1rem;
    }

    .product-snippet {
        -webkit-line-clamp: 3;
    }

    .product-price {
        font-size: 1.25rem;
    }
}

/* Extra Large Desktop */
@media (min-width: 1280px) {
    .products-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .product-image-container {
        height: 240px;
    }

    .product-content {
        padding: var(--spacing-md) var(--spacing-lg);
    }
}

/* Loading Animation */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.loading {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(90deg, var(--color-surface) 25%, var(--color-surface-hover) 50%, var(--color-surface) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}