Seamless Geometric Mosaic Tile Pattern

seamless repeating geometric mosaic tile pattern, interlocking vertical wave shapes and rounded arch loops, alternating pale sky blue and deep navy blue tesserae, small rectangular and square ceramic tiles with thin white grout lines, precise grid-based arrangement, retro swimming pool mosaic aesthetic, flat front-facing view, crisp vector-like pattern but with subtle ceramic texture, evenly lit, high contrast between dark and light bands, clean ornamental surface design, no perspective, no objects, no text