:root {
        --primary-color: #0d6efd; /* Blue as base */
        --accent-color: #ff5722; /* Orange accent from image */
        --text-color: #555;
        --heading-color: #333;
        --border-color: #eee;
    }

    body {
        background-color: #fff;
        color: var(--text-color);
        font-family: 'Inter', sans-serif; /* Modern font */
    }

    .product-detail-area {
        padding: 60px 0;
    }

    /* Product Image Section */
    .product-gallery {
        position: relative;
    }

    .product-main-image {
        background: #f8f9fa;
        border-radius: 10px;
        padding: 40px;
        text-align: center;
        margin-bottom: 20px;
        position: relative;
        overflow: hidden;
    }

    .product-main-image img {
        max-width: 100%;
        height: auto;
        transition: transform 0.5s ease;
    }
    
    .product-main-image:hover img {
        transform: scale(1.05);
    }
    
    .zoom-btn {
        position: absolute;
        top: 20px;
        right: 20px;
        width: 40px;
        height: 40px;
        line-height: 40px;
        background: #00bcd4; /* Cyan/Blue from image */
        color: #fff;
        border-radius: 50%;
        text-align: center;
        cursor: pointer;
        opacity: 0.8;
        transition: 0.3s;
    }
    .zoom-btn:hover { opacity: 1; }

    .product-thumbs {
        display: flex;
        gap: 15px;
    }
    
    .thumb-item {
        width: 80px;
        height: 80px;
        background: #f8f9fa;
        border-radius: 8px;
        padding: 10px;
        cursor: pointer;
        border: 1px solid transparent;
        transition: 0.3s;
    }
    
    .thumb-item:hover, .thumb-item.active {
        border-color: var(--primary-color);
    }

    .thumb-item img {
        width: 100%;
        height: 100%;
        object-fit: contain;
    }

    /* Product Info Section */
    .product-info-wrapper {
        padding-left: 20px;
    }

    .product-title {
        font-size: 32px;
        font-weight: 700;
        color: var(--heading-color);
        margin-bottom: 10px;
    }

    .product-price {
        font-size: 24px;
        font-weight: 700;
        color: var(--accent-color);
        margin-bottom: 15px;
        display: flex;
        align-items: center;
        gap: 15px;
    }
    .old-price {
        color: #999;
        text-decoration: line-through;
        font-size: 18px;
        font-weight: 400;
    }

    .rating-wrap {
        display: flex;
        align-items: center;
        margin-bottom: 25px;
    }
    .stars {
        color: #ffc107;
        font-size: 14px;
        margin-right: 10px;
    }
    .review-count {
        font-size: 13px;
        color: #777;
    }

    .product-desc {
        margin-bottom: 30px;
        line-height: 1.6;
        color: #666;
    }

    .action-group {
        display: flex;
        align-items: center;
        gap: 15px;
        margin-bottom: 30px;
        padding-bottom: 30px;
        border-bottom: 1px solid var(--border-color);
    }

    .qty-input-group {
        display: flex;
        align-items: center;
        background: #f1f3f5;
        border-radius: 30px;
        padding: 5px;
    }
    
    .qty-btn {
        width: 30px;
        height: 30px;
        border: none;
        background: #fff;
        border-radius: 50%;
        font-weight: 700;
        color: #333;
        cursor: pointer;
    }
    
    .qty-input {
        width: 40px;
        text-align: center;
        border: none;
        background: transparent;
        font-weight: 600;
        color: var(--heading-color);
    }

    .add-to-cart-btn {
        background: var(--accent-color);
        color: #fff;
        border: none;
        padding: 12px 40px;
        border-radius: 30px;
        font-weight: 600;
        font-size: 15px;
        cursor: pointer;
        transition: 0.3s;
        box-shadow: 0 4px 15px rgba(255, 87, 34, 0.3);
    }
    
    .add-to-cart-btn:hover {
        background: #f44336;
        transform: translateY(-2px);
    }

    .product-meta {
        font-size: 14px;
    }
    .meta-item {
        margin-bottom: 5px;
        color: #333;
        font-weight: 700;
    }
    .meta-item span {
        font-weight: 400;
        color: #777;
        margin-left: 5px;
    }

    /* Tabs Section */
    .product-tabs-area {
        margin-top: 60px;
    }
    
    .nav-tabs {
        border-bottom: 1px solid var(--border-color);
        margin-bottom: 30px;
    }
    
    .nav-tabs .nav-link {
        border: none;
        background: transparent;
        color: #777;
        font-weight: 600;
        font-size: 16px;
        padding: 10px 30px;
        margin-right: 5px;
        border-bottom: 3px solid transparent;
        transition: 0.3s;
    }
    
    .nav-tabs .nav-link.active, .nav-tabs .nav-link:hover {
        color: var(--heading-color);
        border-bottom-color: var(--accent-color); 
        /* Actually image uses a blue tab active state or pill? Let's stick to blue or accent. Image shows blue 'Description' active background? No, underlined or pill. I'll use underline style for clean look. */
    }

    .tab-content {
        color: #666;
        line-height: 1.7;
    }

    /* Related Products */
    .related-products-area {
        margin-top: 80px;
    }
    
    .section-title {
        font-size: 24px;
        font-weight: 700;
        margin-bottom: 40px;
        color: var(--heading-color);
    }

    .related-item {
        margin-bottom: 30px;
        text-align: center;
    }
    
    .related-thumb {
        background: #f8f9fa;
        padding: 20px;
        border-radius: 8px;
        margin-bottom: 15px;
        position: relative;
        transition: 0.3s;
    }
    
    .related-thumb:hover {
        transform: translateY(-5px);
    }
    
    .related-thumb img {
        max-width: 100%;
        height: 180px;
        object-fit: contain;
    }
    
    .sale-tag {
        position: absolute;
        top: 10px;
        right: 10px;
        background: var(--accent-color);
        color: #fff;
        font-size: 11px;
        padding: 2px 8px;
        border-radius: 3px;
    }

    .related-content h4 {
        font-size: 16px;
        font-weight: 700;
        margin-bottom: 5px;
    }
    
    .related-content h4 a {
        color: var(--heading-color);
        text-decoration: none;
    }
    
    .related-price {
        font-weight: 700;
        color: var(--accent-color);
    }
    
    .related-old-price {
        color: #999;
        text-decoration: line-through;
        font-size: 13px;
        margin-right: 5px;
    }