Create a seamless looping animation of this abstract crystalline architecture. Animate the fragments and shards with fluid, organic motion, as if they are gently pulsing or breathing. Introduce subtle parallax with foreground and background shifting at different speeds to create depth. Add dynamic lighting — shimmering caustics, soft flares, and rainbow refractions that slowly shift over time. Camera should move slowly and smoothly, weaving through the structure in a continuous orbit or flow. Make the loop hypnotic and ethereal, with a dreamy, futuristic aesthetic.