Design a minimalistic and professional 1:1 aspect ratio Facebook poster to promote a free computer course. The poster should exude elegance and simplicity, focusing on clean lines and a tech-forward aesthetic. Utilize a neutral color palette with whites, light grays, and soft blue accents for a modern, professional look. The background should feature a subtle light gradient or soft abstract geometric patterns that add depth without overpowering the design. In the center, depict a confident female character in professional attire (blouse or tailored blazer), either sitting or standing at a sleek, modern computer or tablet. She should be engaged, interacting with the screen in a way that conveys focus and empowerment, symbolizing digital learning. Her expression should be calm yet confident. Surround the character with soft mixed media elements—light watercolor textures or faint digital brush strokes—that enhance the design without cluttering it. At the top, include the headline 'Free Computer Course – Start Your Journey Today' in a clean, modern sans-serif font. Below the headline, feature simple, concise bullet points highlighting course benefits: 'Beginner-Friendly,' 'No Experience Required,' 'Interactive Learning.' At the bottom, include a soft call-to-action, 'Enroll Now,' accompanied by a minimalistic button design. The overall design should be polished, balanced, and optimized for social media, blending minimalism with subtle mixed media elements for a visually appealing, modern, and professional look.