/* TelegramGifts Main CSS */
:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --accent-color: #51cf66;
    --error-color: #ff6b6b;
    --warning-color: #fbbf24;
    --background-color: #f8fafc;
    --card-background: #ffffff;
    --text-primary: #1a202c;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --border-radius: 0.5rem;
    --border-radius-lg: 1rem;
    --border-radius-xl: 1.25rem;
    --container-width: 1440px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--background-color);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1.25rem;
}

/* Header Styles */
header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-md);
    border-bottom: 1px solid rgba(102, 126, 234, 0.1);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: transform 0.3s ease;
}

.logo:hover {
    transform: scale(1.05);
}

.search-container {
    flex: 1;
    max-width: 500px;
    position: relative;
}

.search-input {
    width: 100%;
    padding: 0.75rem 3rem 0.75rem 1.25rem;
    border: 2px solid var(--border-color);
    border-radius: 1.5rem;
    font-size: 1rem;
    background: var(--card-background);
    transition: all 0.3s ease;
    outline: none;
}

.search-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    transform: translateY(-1px);
}

.search-icon {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--primary-color);
    font-size: 1.25rem;
}

.stats {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-weight: 500;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    margin-bottom: 1rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.hero-subtitle {
    font-size: 1.3rem;
    opacity: 0.9;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-bottom: 2rem;
}

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

.hero-stat-number {
    font-size: 2rem;
    font-weight: 700;
    display: block;
}

.hero-stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
}

.cta-button {
    background: white;
    color: var(--primary-color);
    padding: 0.75rem 2rem;
    border: none;
    border-radius: 1.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

/* Category Hero */
.category-hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 3rem 0;
    text-align: center;
}

.category-hero-content {
    max-width: 600px;
    margin: 0 auto;
}

.category-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.category-hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.category-description {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 2rem;
}

.breadcrumb {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    opacity: 0.8;
}

.breadcrumb a {
    color: white;
    text-decoration: none;
}

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

/* Filters Section */
.filters-section {
    padding: 2rem 0;
    background: var(--card-background);
    border-bottom: 1px solid var(--border-color);
}

.filters {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.filter-btn {
    padding: 0.5rem 1.25rem;
    border: 2px solid var(--border-color);
    border-radius: 1.5rem;
    background: var(--card-background);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    font-size: 0.9rem;
}

.filter-btn:hover,
.filter-btn.active {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border-color: transparent;
    transform: translateY(-1px);
}

.sort-controls {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.sort-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    padding: 0.375rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

/* Category Filters */
.category-filters {
    display: flex;
    gap: 2rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    align-items: center;
}

.filter-group label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.price-filters,
.feature-filters {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* Main Content */
.main-content {
    padding: 3rem 0;
}

.gifts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
}

.gift-card {
    background: var(--card-background);
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    position: relative;
    border: 1px solid var(--border-color);
}

.gift-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.gift-image {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
}

.popular-badge {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    background: var(--error-color);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: var(--border-radius);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
}

.discount-badge {
    position: absolute;
    top: 0.75rem;
    left: 0.75rem;
    background: var(--accent-color);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: var(--border-radius);
    font-size: 0.7rem;
    font-weight: 600;
}

.gift-content {
    padding: 1.5rem;
}

.gift-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.gift-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.gift-category {
    background: #f1f5f9;
    color: var(--primary-color);
    padding: 0.125rem 0.5rem;
    border-radius: var(--border-radius);
    font-size: 0.7rem;
    font-weight: 500;
    text-transform: uppercase;
}

.gift-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

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

.gift-price {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-color);
}

.gift-original-price {
    font-size: 0.9rem;
    color: var(--text-muted);
    text-decoration: line-through;
}

.gift-rating {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.stars {
    color: var(--warning-color);
}

.gift-features {
    margin-bottom: 1.5rem;
}

.gift-features ul {
    list-style: none;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.gift-features li {
    padding: 0.125rem 0;
    position: relative;
    padding-left: 1rem;
    line-height: 1.4;
}

.gift-features li::before {
    content: '\2713';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

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

.get-gift-btn {
    flex: 1;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border: none;
    padding: 0.75rem;
    border-radius: var(--border-radius-lg);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    text-align: center;
    font-size: 0.9rem;
}

.get-gift-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.favorite-btn {
    background: var(--background-color);
    border: 1px solid var(--border-color);
    padding: 0.75rem;
    border-radius: var(--border-radius-lg);
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--text-secondary);
    font-size: 1.1rem;
    min-width: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

/* Related Categories */
.related-categories {
    padding: 3rem 0;
    background: var(--background-color);
}

.related-categories h2 {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 2rem;
    font-weight: 700;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.category-card {
    background: var(--card-background);
    padding: 2rem;
    border-radius: var(--border-radius-xl);
    text-align: center;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.category-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

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

.category-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.category-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Footer */
footer {
    background: var(--text-primary);
    color: white;
    padding: 3rem 0 2rem;
    margin-top: 4rem;
}

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

.footer-section h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.footer-section p,
.footer-section a {
    color: var(--text-muted);
    text-decoration: none;
    line-height: 1.6;
    margin-bottom: 0.5rem;
    display: block;
}

.footer-section a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #374151;
    color: var(--text-muted);
}

/* Loading skeleton */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: var(--border-radius);
}

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

/* Responsive Design */
@media (max-width: 1024px) {
    .gifts-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: 1.5rem;
    }
    
    .hero-stats {
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }
    
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }

    .search-container {
        order: 1;
        max-width: 100%;
    }

    .stats {
        order: 2;
        justify-content: center;
    }

    .hero {
        padding: 2rem 0;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 1rem;
    }

    .gifts-grid {
        grid-template-columns: 1fr;
    }

    .filters {
        flex-direction: column;
        align-items: center;
    }
    
    .category-filters {
        flex-direction: column;
        gap: 1rem;
    }
    
    .sort-controls {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 0.75rem;
    }

    .hero {
        padding: 1.5rem 0;
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    .gift-content {
        padding: 1rem;
    }
    
    .category-hero {
        padding: 2rem 0;
    }
    
    .category-icon {
        font-size: 3rem;
    }
    
    .category-hero h1 {
        font-size: 2rem;
    }
    
    .price-filters,
    .feature-filters {
        justify-content: center;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --background-color: #0f172a;
        --card-background: #1e293b;
        --text-primary: #f8fafc;
        --text-secondary: #cbd5e1;
        --text-muted: #64748b;
        --border-color: #334155;
    }
}

/* Print styles */
@media print {
    .header,
    .filters-section,
    .footer,
    .related-categories {
        display: none;
    }
    
    .gift-actions {
        display: none;
    }
    
    .gifts-grid {
        display: block;
    }
    
    .gift-card {
        break-inside: avoid;
        margin-bottom: 1rem;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    .filter-btn,
    .sort-btn {
        border-width: 2px;
    }
    
    .gift-card {
        border-width: 2px;
    }
}

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