EmilandClaude Sonnet 5
15d36d6437
Colours move into theme tokens (light values in :root, dark in [data-theme=dark]); the closing contact band inverts on each theme. The choice is stored in localStorage and applied by a head script before the first paint. Voxel covers and image shadows follow the theme. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01XtcZtnG4GQA1d6mW5PNrS9
48 lines
1.5 KiB
TypeScript
48 lines
1.5 KiB
TypeScript
'use client'
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import { useEffect, useState } from 'react'
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import styles from './topbar.module.css'
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type Theme = 'dark' | 'light'
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/** Switches between the dark (default) and light theme; the choice is remembered in this browser. */
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export default function ThemeToggle() {
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const [theme, setTheme] = useState<Theme>('dark')
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// The page starts dark; a small script in <head> applies a stored "light" choice before the first paint.
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useEffect(() => {
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setTheme(document.documentElement.dataset.theme === 'light' ? 'light' : 'dark')
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}, [])
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const toggle = () => {
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const next: Theme = theme === 'dark' ? 'light' : 'dark'
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document.documentElement.dataset.theme = next
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try {
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localStorage.setItem('theme', next)
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} catch {
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// Storage can be blocked; the theme still switches for this visit.
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}
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setTheme(next)
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}
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return (
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<button
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type="button"
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className={styles.toggle}
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onClick={toggle}
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aria-label={theme === 'dark' ? 'Switch to the light theme' : 'Switch to the dark theme'}
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>
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{theme === 'dark' ? (
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<svg viewBox="0 0 24 24" aria-hidden="true">
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<circle cx="12" cy="12" r="4" />
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<path d="M12 2.5v2.2M12 19.3v2.2M4.2 4.2l1.6 1.6M18.2 18.2l1.6 1.6M2.5 12h2.2M19.3 12h2.2M4.2 19.8l1.6-1.6M18.2 5.8l1.6-1.6" />
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</svg>
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) : (
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<svg viewBox="0 0 24 24" aria-hidden="true">
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<path d="M20.5 14.2A8.5 8.5 0 0 1 9.8 3.5a8.5 8.5 0 1 0 10.7 10.7z" />
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</svg>
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)}
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</button>
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)
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}
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