Design a text-only logo with a bold, flowing, and playful font that mimics the groovy, retro style of 1970s typography. The text should have thick, rounded letters that are connected and form an organic, bubble-like shape. The featured word should be ‘Serendipity’. Use black for the text and position it on a plain white background. The overall design should feel fluid, slightly abstract, and energetic, with the letters appearing to blend or flow into one another. The logo should be minimalist but eye-catching.