Every pixel, every interaction, every shadow — intentional.
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Full Keyboard Support
Every key mapped. Numbers, operators, Enter, Backspace, Escape — all work natively with visual feedback.
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Ripple Interactions
Blue-tinted ripple on glass, white on dark. Spring-physics press animation. Active operator highlight state.
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Two Themes, One Codebase
Identical HTML and JS. Only the 7 CSS files differ. Swap themes by swapping the css/ folder.
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Precision Math Engine
Chained operations, floating point handling with toPrecision(10), division-by-zero error shake, 12-digit limit.
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LED vs LCD Display
Dark theme: amber LED glow with scanline texture. Glass: cool blue LCD with gradient top-edge highlight.
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CSS Custom Properties
All design tokens in variables.css. Change any color, radius, or spacing in one place and propagate everywhere.