Files
kit-ui/components/BackToTop.tsx
Sebastian Krüger 9126589de3 refactor: align landing page and 404 with Calculate blueprint
- Hero: remove framer-motion, CSS stagger animations, glass pill CTA button, refined typography and scroll indicator
- Stats: remove framer-motion, Lucide icons, tighter glass cards with mono labels
- ToolsGrid: remove framer-motion, editorial section heading, 4-col xl grid
- ToolCard: replace framer-motion motion.Link with plain Link + CSS hover, compact layout (icon→title→desc→badges+arrow), ElementType icon prop
- Footer: remove framer-motion, matches sidebar footer style
- BackToTop: remove framer-motion, JS scroll progress bar (1px primary line), compact glass button
- not-found: remove framer-motion and shadcn Button, glass pill CTA, 120px mono 404, CSS stagger
- page.tsx: remove unnecessary 'use client' directive

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-03-01 09:07:18 +01:00

46 lines
1.5 KiB
TypeScript

'use client';
import { useState, useEffect, useRef } from 'react';
import { ChevronUp } from 'lucide-react';
export default function BackToTop() {
const [isVisible, setIsVisible] = useState(false);
const barRef = useRef<HTMLDivElement>(null);
useEffect(() => {
const onScroll = () => {
setIsVisible(window.scrollY > 300);
if (barRef.current) {
const el = document.documentElement;
const scrolled = el.scrollTop / (el.scrollHeight - el.clientHeight);
barRef.current.style.transform = `scaleX(${scrolled})`;
}
};
window.addEventListener('scroll', onScroll, { passive: true });
return () => window.removeEventListener('scroll', onScroll);
}, []);
return (
<>
{/* Scroll progress bar */}
<div
ref={barRef}
className="fixed top-0 left-0 right-0 h-px bg-primary z-50 origin-left"
style={{ transform: 'scaleX(0)', transition: 'transform 0.1s linear' }}
/>
{/* Back to top button */}
{isVisible && (
<button
onClick={() => window.scrollTo({ top: 0, behavior: 'smooth' })}
className="fixed bottom-6 right-6 w-8 h-8 glass rounded-lg flex items-center justify-center text-muted-foreground/40 hover:text-primary hover:border-primary/40 transition-all duration-200 z-40"
aria-label="Back to top"
style={{ animation: 'fadeIn 0.2s ease-out both' }}
>
<ChevronUp className="w-3.5 h-3.5" />
</button>
)}
</>
);
}