A minimalist, atmospheric square book cover for an audiobook. The central image is a solitary, weathered wooden rowboat, gently rocking on the surface of calm, dark water. Subtle, ethereal wisps of mist or fog drift just above the water's surface, obscuring the distant horizon. The color palette is dominated by deep, muted blues and greens, with hints of soft, diffused grey. The overall mood is one of quiet introspection, melancholy, and a touch of ethereal solitude. The lighting is soft and diffused, creating a dreamlike quality. The composition is centered, drawing the viewer's eye to the boat and its immediate surroundings, with a sense of vastness suggested by the obscured background. Professional audiobook cover aesthetic, square 1024x1024 format, no text, no letters, no words, no title, no author name.