/* =============================================================================
   AFFILIATE PRODUCT AGGREGATOR - MAIN STYLESHEET
   Author: MiniMax Agent
   Description: Clean, responsive CSS for affiliate product aggregator website
   ============================================================================= */

/* =============================================================================
   CSS RESET & BASE STYLES
   ============================================================================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

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

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

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
    transition: all 0.3s ease;
}

/* =============================================================================
   TYPOGRAPHY
   ============================================================================= */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: #1a1a1a;
}

h1 {
    font-size: clamp(2rem, 5vw, 3rem);
}

h2 {
    font-size: clamp(1.5rem, 4vw, 2.25rem);
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
}

p {
    margin-bottom: 1rem;
    color: #555;
}

.text-center {
    text-align: center;
}

.text-small {
    font-size: 0.875rem;
}

/* =============================================================================
   LAYOUT COMPONENTS
   ============================================================================= */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.section {
    padding: 3rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-subtitle {
    font-size: 1.125rem;
    color: #666;
    margin-top: 0.5rem;
}

/* Grid System */
.grid {
    display: grid;
    gap: 1.5rem;
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.grid-6 {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
}

/* Flexbox utilities */
.flex {
    display: flex;
}

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

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

.flex-wrap {
    flex-wrap: wrap;
}

/* =============================================================================
   HEADER & NAVIGATION
   ============================================================================= */
.header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-top {
    padding: 0.5rem 0;
    background: #f8f9fa;
    border-bottom: 1px solid #e9ecef;
}

.header-top .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
}

.header-main {
    padding: 1rem 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: #2563eb;
}

.nav {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav a {
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
}

.nav a:hover,
.nav a.active {
    color: #2563eb;
}

.nav a.active::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    width: 100%;
    height: 2px;
    background: #2563eb;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: 8px;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: #333;
    transition: 0.3s;
}

/* =============================================================================
   HERO SECTION
   ============================================================================= */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.hero h1 {
    color: white;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.9);
}

.hero-search {
    max-width: 500px;
    margin: 0 auto;
    position: relative;
}

.search-form {
    display: flex;
    background: white;
    border-radius: 50px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.search-input {
    flex: 1;
    padding: 1rem 1.5rem;
    border: none;
    font-size: 1rem;
    outline: none;
}

.search-btn {
    background: #2563eb;
    color: white;
    padding: 1rem 2rem;
    font-weight: 600;
    border-radius: 0 50px 50px 0;
}

.search-btn:hover {
    background: #1d4ed8;
}

/* =============================================================================
   BREADCRUMBS
   ============================================================================= */
.breadcrumbs {
    background: #f8f9fa;
    padding: 1rem 0;
    margin-bottom: 2rem;
}

.breadcrumbs-list {
    display: flex;
    list-style: none;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.breadcrumbs-list li {
    display: flex;
    align-items: center;
}

.breadcrumbs-list li:not(:last-child)::after {
    content: '/';
    margin-left: 0.5rem;
    color: #666;
}

.breadcrumbs a {
    color: #2563eb;
    text-decoration: none;
}

.breadcrumbs a:hover {
    text-decoration: underline;
}

.breadcrumbs .current {
    color: #666;
}

/* =============================================================================
   PRODUCT CARDS & GRID
   ============================================================================= */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.product-card {
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    transition: all 0.3s ease;
    position: relative;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.product-image {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16/10;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.product-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: #dc2626;
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.product-content {
    padding: 1.5rem;
}

.product-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.product-title a {
    color: #1a1a1a;
}

.product-title a:hover {
    color: #2563eb;
}

.product-description {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 1rem;
    line-height: 1.4;
}

.product-price {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.price-current {
    font-size: 1.25rem;
    font-weight: 700;
    color: #059669;
}

.price-original {
    font-size: 1rem;
    color: #666;
    text-decoration: line-through;
}

.price-discount {
    background: #fee2e2;
    color: #dc2626;
    padding: 0.125rem 0.5rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.product-rating {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.stars {
    color: #fbbf24;
}

.rating-count {
    color: #666;
    font-size: 0.875rem;
}

.product-actions {
    display: flex;
    gap: 0.5rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.btn-primary {
    background: #2563eb;
    color: white;
    flex: 1;
}

.btn-primary:hover {
    background: #1d4ed8;
    transform: translateY(-1px);
}

.btn-secondary {
    background: #f3f4f6;
    color: #374151;
    padding: 0.75rem;
}

.btn-secondary:hover {
    background: #e5e7eb;
}

/* =============================================================================
   CATEGORY LIST
   ============================================================================= */
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.category-card {
    background: white;
    border-radius: 12px;
    padding: 2rem 1.5rem;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.category-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    border-color: #2563eb;
}

.category-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

.category-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #1a1a1a;
}

.category-count {
    color: #666;
    font-size: 0.875rem;
}

/* =============================================================================
   PRODUCT DETAIL PAGE
   ============================================================================= */
.product-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin: 2rem 0;
}

.product-detail-image {
    position: sticky;
    top: 2rem;
}

.product-detail-content h1 {
    margin-bottom: 1rem;
}

.product-detail-meta {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #e5e7eb;
}

.product-detail-description {
    margin: 2rem 0;
    line-height: 1.6;
}

.product-specs {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 12px;
    margin: 2rem 0;
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.spec-item {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px solid #e5e7eb;
}

.spec-label {
    font-weight: 600;
    color: #374151;
}

.spec-value {
    color: #666;
}

.product-purchase {
    background: white;
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    padding: 2rem;
    position: sticky;
    top: 2rem;
}

.purchase-price {
    text-align: center;
    margin-bottom: 2rem;
}

.purchase-price .price-current {
    font-size: 2rem;
    color: #059669;
}

.purchase-price .price-original {
    font-size: 1.25rem;
}

.purchase-btn {
    width: 100%;
    padding: 1rem;
    background: #059669;
    color: white;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1.125rem;
    margin-bottom: 1rem;
}

.purchase-btn:hover {
    background: #047857;
}

.purchase-guarantee {
    text-align: center;
    color: #666;
    font-size: 0.875rem;
}

/* =============================================================================
   FORMS
   ============================================================================= */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #374151;
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-input:focus {
    outline: none;
    border-color: #2563eb;
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

/* =============================================================================
   FOOTER
   ============================================================================= */
.footer {
    background: #1f2937;
    color: white;
    padding: 3rem 0 1rem;
    margin-top: 4rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    color: white;
    margin-bottom: 1rem;
}

.footer-section p,
.footer-section li {
    color: #d1d5db;
    margin-bottom: 0.5rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section a {
    color: #d1d5db;
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 1rem;
    text-align: center;
    color: #9ca3af;
}

/* =============================================================================
   UTILITIES
   ============================================================================= */
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-5 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mb-5 { margin-bottom: 2rem; }

.p-1 { padding: 0.25rem; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 1rem; }
.p-4 { padding: 1.5rem; }
.p-5 { padding: 2rem; }

.hidden {
    display: none;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* =============================================================================
   RESPONSIVE DESIGN
   ============================================================================= */
@media (max-width: 768px) {
    .container {
        padding: 0 0.75rem;
    }
    
    .nav {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero {
        padding: 2rem 0;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .search-form {
        flex-direction: column;
        border-radius: 12px;
    }
    
    .search-btn {
        border-radius: 0 0 12px 12px;
    }
    
    .product-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 1rem;
    }
    
    .category-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
    
    .product-detail {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .product-detail-image {
        position: static;
    }
    
    .product-purchase {
        position: static;
    }
    
    .product-detail-meta {
        flex-direction: column;
        gap: 1rem;
    }
    
    .section {
        padding: 2rem 0;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .product-grid {
        grid-template-columns: 1fr;
    }
    
    .category-grid {
        grid-template-columns: 1fr;
    }
    
    .specs-grid {
        grid-template-columns: 1fr;
    }
    
    .product-actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
}

/* =============================================================================
   LOADING & ANIMATIONS
   ============================================================================= */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* =============================================================================
   ACCESSIBILITY
   ============================================================================= */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}

/* Focus styles for keyboard navigation */
button:focus,
a:focus,
input:focus,
textarea:focus,
select:focus {
    outline: 2px solid #2563eb;
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .product-card,
    .category-card,
    .product-purchase {
        border: 2px solid #000;
    }
}