add Emil-style UI polish pass (animations, shared components, feel)

2026-06-21 06:11:45 +00:00 · 2026-04-18 17:39:15 +02:00
parent f79385cf2a
commit 4db6cbef22
33 changed files with 1103 additions and 320 deletions
@@ -0,0 +1,126 @@
+import React, { useLayoutEffect, useRef, useState, type CSSProperties } from 'react'
+
+export interface SlidingTab<T extends string> {
+  id: T
+  label: React.ReactNode
+  title?: string
+  icon?: React.ComponentType<{ size?: number; className?: string }>
+  count?: number
+}
+
+interface SlidingTabsProps<T extends string> {
+  tabs: readonly SlidingTab<T>[]
+  activeTab: T
+  onChange: (id: T) => void
+  size?: 'sm' | 'md'
+  fullWidth?: boolean
+  className?: string
+  indicatorColor?: string
+  indicatorTextColor?: string
+}
+
+// Stripe-style sliding indicator — der aktive Pill gleitet zwischen Tabs.
+// Nutzt gemessene Offsets der Buttons + CSS transform.
+export function SlidingTabs<T extends string>({
+  tabs, activeTab, onChange, size = 'md', fullWidth, className,
+  indicatorColor = 'var(--accent)', indicatorTextColor = 'var(--accent-text)',
+}: SlidingTabsProps<T>): React.ReactElement {
+  const containerRef = useRef<HTMLDivElement>(null)
+  const tabRefs = useRef<Map<T, HTMLButtonElement | null>>(new Map())
+  const [indicator, setIndicator] = useState<{ left: number; width: number; ready: boolean }>({ left: 0, width: 0, ready: false })
+
+  useLayoutEffect(() => {
+    const active = tabRefs.current.get(activeTab)
+    const container = containerRef.current
+    if (!active || !container) return
+    const containerRect = container.getBoundingClientRect()
+    const activeRect = active.getBoundingClientRect()
+    setIndicator({
+      left: activeRect.left - containerRect.left + container.scrollLeft,
+      width: activeRect.width,
+      ready: true,
+    })
+  }, [activeTab, tabs.length])
+
+  const padding = size === 'sm' ? '5px 12px' : '6px 14px'
+  const fontSize = size === 'sm' ? 12 : 13
+  const borderRadius = size === 'sm' ? 18 : 20
+
+  return (
+    <div
+      ref={containerRef}
+      className={className}
+      style={{
+        position: 'relative', display: 'flex', alignItems: 'center',
+        gap: 2, overflowX: 'auto', scrollbarWidth: 'none', msOverflowStyle: 'none',
+        width: fullWidth ? '100%' : undefined,
+      }}
+    >
+      {/* Sliding indicator */}
+      {indicator.ready && (
+        <div
+          aria-hidden
+          style={{
+            position: 'absolute',
+            top: '50%',
+            left: indicator.left,
+            width: indicator.width,
+            height: size === 'sm' ? 26 : 30,
+            background: indicatorColor,
+            borderRadius,
+            transform: 'translateY(-50%)',
+            transition: 'left 320ms cubic-bezier(0.77, 0, 0.175, 1), width 320ms cubic-bezier(0.77, 0, 0.175, 1)',
+            pointerEvents: 'none',
+            zIndex: 0,
+            willChange: 'left, width',
+          }}
+        />
+      )}
+      {tabs.map(tab => {
+        const isActive = tab.id === activeTab
+        const Icon = tab.icon
+        const btnStyle: CSSProperties = {
+          position: 'relative', zIndex: 1,
+          flexShrink: 0,
+          padding,
+          borderRadius,
+          border: 'none',
+          cursor: 'pointer',
+          fontSize,
+          fontWeight: isActive ? 600 : 500,
+          background: 'transparent',
+          color: isActive ? indicatorTextColor : 'var(--text-muted)',
+          fontFamily: 'inherit',
+          transition: 'color 220ms cubic-bezier(0.23, 1, 0.32, 1)',
+          display: 'flex', alignItems: 'center', gap: 6,
+          flex: fullWidth ? 1 : undefined,
+          justifyContent: 'center',
+          whiteSpace: 'nowrap',
+        }
+        return (
+          <button
+            key={tab.id}
+            ref={el => { tabRefs.current.set(tab.id, el) }}
+            onClick={() => onChange(tab.id)}
+            style={btnStyle}
+            title={tab.title ?? (typeof tab.label === 'string' ? tab.label : undefined)}
+          >
+            {Icon && <Icon size={size === 'sm' ? 13 : 15} />}
+            {tab.label}
+            {tab.count != null && (
+              <span style={{
+                fontSize: 10, fontWeight: 600,
+                padding: '1px 6px', borderRadius: 99, minWidth: 16,
+                background: isActive ? 'rgba(255,255,255,0.22)' : 'var(--bg-tertiary)',
+                color: isActive ? 'inherit' : 'var(--text-faint)',
+                textAlign: 'center',
+              }}>{tab.count}</span>
+            )}
+          </button>
+        )
+      })}
+    </div>
+  )
+}
+
+export default SlidingTabs