.product-details-container {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    padding: 30px;
    margin-bottom: 30px;
}
.product-title-lg {
    font-size: 1.8rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 15px;
}
.product-price-box {
    background: #f8f9fa;
    padding: 15px 20px;
    border-radius: 8px;
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 15px;
}
.product-price-box .price-current {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color, #e53e3e);
    margin: 0;
}
.product-price-box .price-old {
    font-size: 1.2rem;
    color: #718096;
    text-decoration: line-through;
}
.product-price-box .badge-discount {
    background: #38a169;
    color: white;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}
.pro-desc {
    color: #4a5568;
    line-height: 1.6;
    font-size: 1rem;
    margin-bottom: 25px;
}
.quantity-wrapper {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 25px;
}
.quantity-control {
    display: flex;
    align-items: center;
    border: 1px solid #cbd5e0;
    border-radius: 6px;
    overflow: hidden;
    background: #fff;
}
.quantity-control input {
    width: 60px;
    text-align: center;
    border: none;
    padding: 10px;
    font-weight: 600;
    font-size: 1rem;
}
.quantity-control .btn-minus, 
.quantity-control .btn-plus {
    background: #f7fafc;
    border: none;
    padding: 10px 15px;
    font-weight: bold;
    color: #4a5568;
    cursor: pointer;
    transition: all 0.2s;
}
.quantity-control .btn-minus:hover, 
.quantity-control .btn-plus:hover {
    background: #edf2f7;
    color: var(--primary-color, #4f46e5);
}
.quantity-control input.qty-input {
    width: 100%;
    min-width: 40px;
    -moz-appearance: textfield;
}
.quantity-control input.qty-input::-webkit-outer-spin-button,
.quantity-control input.qty-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}
.btn-add-cart-lg {
    background: var(--primary-color, #e53e3e);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 6px;
    font-weight: 600;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s;
}
.btn-add-cart-lg:hover {
    background: var(--secondary-color, #c53030);
    color: white;
}
.product-large-slider img {
    border-radius: 12px;
    width: 100%;
    object-fit: cover;
    border: 1px solid #edf2f7;
}
.pro-nav-thumb {
    margin: 10px 5px;
    cursor: pointer;
}
.pro-nav-thumb img {
    border-radius: 8px;
    border: 2px solid transparent;
    transition: border-color 0.3s;
    width: 100%;
}
.pro-nav-thumb.slick-current img {
    border-color: var(--primary-color, #e53e3e);
}
.useful-links a {
    color: #4a5568;
    font-weight: 600;
    text-decoration: none;
    margin-right: 20px;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}
.useful-links a:hover {
    color: var(--primary-color, #e53e3e);
}

/* Description Tabs */
.description-wrapper {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    padding: 30px;
    margin-top: 20px;
    border: 1px solid #edf2f7;
}
.custom-nav-tabs {
    border-bottom: 2px solid #edf2f7;
    margin-bottom: 20px;
}
.custom-nav-tabs .nav-link {
    font-size: 1.1rem;
    font-weight: 600;
    color: #718096;
    border: none;
    border-bottom: 2px solid transparent;
    padding: 10px 20px;
    background: transparent;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.custom-nav-tabs .nav-link:hover {
    color: var(--primary-color, #4f46e5);
    border-color: transparent;
}
.custom-nav-tabs .nav-link.active {
    color: var(--primary-color, #4f46e5);
    border-bottom: 2px solid var(--primary-color, #4f46e5);
    background: transparent;
}
.description-content {
    color: #4a5568;
    line-height: 1.8;
    font-size: 1.05rem;
}
.description-content h1, .description-content h2, .description-content h3 {
    color: #2d3748;
    margin-top: 20px;
    margin-bottom: 15px;
    font-weight: 700;
}
.description-content ul, .description-content ol {
    margin-bottom: 20px;
    padding-left: 20px;
}
.description-content li {
    margin-bottom: 8px;
}