/* --- TRANG CHI TIẾT SẢN PHẨM --- */
.detail-container {
    display: flex;
    gap: 50px;
    max-width: 1100px;
    background: #fff;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    margin: 0 auto;
}

.detail-image-box {
    flex: 1; /* Chiếm 50% chiều rộng */
}

.detail-image-box img {
    width: 100%;
    border-radius: 8px;
    object-fit: cover;
    aspect-ratio: 1 / 1;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}

.detail-info-box {
    flex: 1; /* Chiếm 50% chiều rộng */
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.detail-brand {
    font-size: 13px;
    color: #888;
    letter-spacing: 2px;
    margin-bottom: 10px;
}

.detail-title {
    font-family: 'Playfair Display', serif;
    font-size: 32px;
    color: #3e2723;
    margin-bottom: 15px;
    line-height: 1.3;
}

.detail-price-wrapper {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 25px;
    padding-bottom: 25px;
    border-bottom: 1px solid #eee;
}

.detail-current-price {
    font-size: 28px;
    color: #8d494a;
    font-weight: bold;
}

.detail-old-price {
    font-size: 18px;
    color: #aaa;
    text-decoration: line-through;
}

.detail-discount-badge {
    background: #8d494a;
    color: #fff;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: bold;
}

.detail-description {
    color: #555;
    line-height: 1.8;
    margin-bottom: 30px;
    font-size: 15px;
}

/* Khu vực Nút bấm */
.detail-actions {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
}

.quantity-selector {
    display: flex;
    align-items: center;
    border: 1px solid #ddd;
    border-radius: 6px;
    overflow: hidden;
}

.qty-btn {
    background: #f9f9f9;
    border: none;
    padding: 0 15px;
    height: 50px;
    font-size: 20px;
    cursor: pointer;
    transition: 0.2s;
}

.qty-btn:hover { background: #eee; }

.qty-number {
    width: 50px;
    text-align: center;
    font-size: 16px;
    font-weight: bold;
}

.add-to-cart-big {
    flex-grow: 1;
    background: #4a3022;
    color: #fff;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: 0.3s;
}

.add-to-cart-big:hover {
    background: #8d494a;
}

.detail-policies p {
    font-size: 14px;
    color: #666;
    margin-bottom: 8px;
}

/* Ép thành 1 cột trên điện thoại */
@media (max-width: 768px) {
    .detail-container {
        flex-direction: column;
        padding: 20px;
    }
    .detail-actions {
        flex-direction: column;
    }
    .qty-btn { height: 45px; }
}