[Docs] Fix LightTheme UI

[RafaelJohn9]

Subcategory

missing-docs - Docs are completely absent

Description

Light Theme seems off, (not visible ). We need to enhance it.

Documentation Location (optional)

No response

Additional Context (optional)

No response

[coderabbitai]

A summary of the changes CodeRabbit can apply:

• Add full light-theme CSS variable definitions and updated styles across custom.css, MpesaKit.module.css, CodeBlock.module.css, Alert.module.css, ParametersTable.module.css, SectionHeader.module.css, Tabs.module.css, and index.module.css to enable a readable, production-ready light theme with improved component contrast, consistent M‑Pesa branding, and a working theme switcher.

• Add comprehensive light-theme support by inserting [data-theme='light'] CSS rules and variables across docs/styles: update docs/components/Alert.module.css, CodeBlock.module.css, ParametersTable.module.css, SectionHeader.module.css, Tabs.module.css (add light-mode color/spacing/border rules); extend docs/src/components/MpesaKit.module.css (add light-theme variables and many component adjustments); enhance docs/src/css/custom.css (global light-theme variables, light navbar glass style, and menu link rules); and expand docs/src/pages/index.module.css (light-theme landing page, cards, buttons, terminal, and feature styles).

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