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

:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --dark-color: #1a1a1a;
    --light-color: #f8f9fa;
    --border-color: #ddd;
    --shadow: 0 2px 10px rgba(0,0,0,0.1);
    --shadow-hover: 0 5px 20px rgba(0,0,0,0.15);
    --transition: all 0.3s ease;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: var(--light-color);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 1.5rem 0;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 10px;
}

.btn-admin {
    background: rgba(255,255,255,0.2);
    color: white;
    padding: 0.6rem 1.2rem;
    border-radius: 25px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
    border: 2px solid transparent;
}

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

/* Categories Filter */
.categories-section {
    background: white;
    padding: 1.5rem 0;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

.categories-filter {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
}

.category-btn {
    padding: 0.7rem 1.5rem;
    background: var(--light-color);
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 25px;
    border: 2px solid var(--border-color);
    transition: var(--transition);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.category-btn:hover {
    background: var(--secondary-color);
    color: white;
    border-color: var(--secondary-color);
    transform: translateY(-2px);
}

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

/* Main Content */
.main-content {
    padding: 2rem 0 4rem;
}

/* Products Grid */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Product Card */
.product-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    cursor: pointer;
}

.product-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-5px);
}

.product-image {
    position: relative;
    width: 100%;
    padding-top: 100%;
    overflow: hidden;
    background: #f0f0f0;
}

.product-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.product-card:hover .product-image img {
    transform: scale(1.1);
}

.badge-featured {
    position: absolute;
    top: 10px;
    right: 10px;
    background: var(--warning-color);
    color: white;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: bold;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 5px;
}

.product-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.product-card:hover .product-overlay {
    opacity: 1;
}

.btn-view {
    background: white;
    color: var(--primary-color);
    border: none;
    padding: 12px 24px;
    border-radius: 25px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.btn-view:hover {
    background: var(--secondary-color);
    color: white;
    transform: scale(1.05);
}

.product-info {
    padding: 1.2rem;
}

.product-title {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
    font-weight: 600;
}

.product-category {
    display: inline-block;
    background: var(--light-color);
    color: var(--secondary-color);
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
}

.product-ref {
    display: block;
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.product-price {
    font-size: 1.3rem;
    font-weight: bold;
    color: var(--success-color);
    margin-top: 0.5rem;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
}

.empty-state i {
    font-size: 5rem;
    color: var(--border-color);
    margin-bottom: 1rem;
}

.empty-state h2 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.empty-state p {
    color: #666;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.9);
    overflow-y: auto;
    animation: fadeIn 0.3s ease;
}

.modal.active {
    display: block;
}

.modal-content {
    position: relative;
    background: white;
    margin: 2rem auto;
    max-width: 1200px;
    border-radius: 12px;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-close {
    position: absolute;
    top: 15px;
    right: 15px;
    background: var(--accent-color);
    color: white;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    z-index: 10;
    transition: var(--transition);
}

.modal-close:hover {
    background: #c0392b;
    transform: rotate(90deg);
}

.modal-body {
    padding: 2rem;
}

.loading {
    text-align: center;
    padding: 3rem;
    font-size: 1.2rem;
    color: var(--secondary-color);
}

/* Product Details */
.product-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.product-gallery {
    position: sticky;
    top: 20px;
    height: fit-content;
}

.gallery-main {
    position: relative;
    width: 100%;
    padding-top: 100%;
    background: #f0f0f0;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 1rem;
}

.gallery-main img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.gallery-zoom {
    position: absolute;
    bottom: 15px;
    right: 15px;
    background: rgba(0,0,0,0.7);
    color: white;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
}

.gallery-zoom:hover {
    background: var(--secondary-color);
    transform: scale(1.1);
}

.gallery-thumbnails {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: 10px;
}

.thumbnail {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: 8px;
    cursor: pointer;
    border: 3px solid transparent;
    transition: var(--transition);
}

.thumbnail:hover {
    border-color: var(--secondary-color);
}

.thumbnail.active {
    border-color: var(--primary-color);
}

.product-info-detail {
    padding: 1rem 0;
}

.product-title-detail {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.product-meta {
    margin-bottom: 1rem;
    padding: 0.8rem;
    background: var(--light-color);
    border-radius: 8px;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #555;
}

.product-price-detail {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--success-color);
    margin: 1.5rem 0;
}

.product-description {
    margin: 2rem 0;
}

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

.product-description p {
    color: #555;
    line-height: 1.8;
}

.product-stats {
    margin: 1.5rem 0;
    padding: 1rem;
    background: var(--light-color);
    border-radius: 8px;
}

.stat-item {
    color: #666;
    display: flex;
    align-items: center;
    gap: 8px;
}

.product-actions {
    margin-top: 2rem;
}

.btn-contact {
    background: #25D366;
    color: white;
    border: none;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    border-radius: 25px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: bold;
    transition: var(--transition);
}

.btn-contact:hover {
    background: #128C7E;
    transform: scale(1.05);
}

/* Zoom Modal */
.zoom-modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.95);
    cursor: zoom-out;
}

.zoom-modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease;
}

.zoom-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--accent-color);
    color: white;
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    z-index: 10;
}

#zoomedImage {
    max-width: 95%;
    max-height: 95%;
    object-fit: contain;
}

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

/* Responsive */
@media (max-width: 1024px) {
    .product-details {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .product-gallery {
        position: relative;
        top: 0;
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .logo {
        font-size: 1.5rem;
    }
    
    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 15px;
    }
    
    .product-title-detail {
        font-size: 1.5rem;
    }
    
    .product-price-detail {
        font-size: 2rem;
    }
    
    .modal-content {
        margin: 1rem;
    }
    
    .modal-body {
        padding: 1rem;
    }
}

@media (max-width: 480px) {
    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 10px;
    }
    
    .category-btn {
        font-size: 0.9rem;
        padding: 0.5rem 1rem;
    }
    
    .product-info {
        padding: 0.8rem;
    }
    
    .product-title {
        font-size: 1rem;
    }
}