Create an eye-catching banner for a Black Friday online sale in a 16:9 format that conveys a sense of urgency and luxury. The centerpiece of the banner should feature the phrase 'BLACK FRIDAY' in a bold, modern sans serif font, rendered in bright white to stand out against a sleek black background. Below this, include a dynamic arrow graphic with a gradient design that points towards the promotional text stating 'SALE ONLINE - ALL UP TO 50% OFF.' This promotional text should be bold and prominent, ensuring it captures the viewer's attention. The black background should be enhanced with luxurious gold and white accents, creating a sophisticated atmosphere. To add vibrancy and excitement, incorporate a variety of icons and elements related to shopping, such as shopping bags, festive ornaments, and discount tags, surrounding the main text. These elements should be arranged in a way that guides the viewer's eye towards the promotional message. Additionally, consider adding subtle text shadows or glows to enhance the visibility of the text against the dark background. The overall design should be modern and engaging, effectively communicating the urgency of the sale while providing a luxurious shopping experience.