style: CSS polish, light mode verification, build fixes

- Add --primary-rgb, --transition-fast, --transition-normal CSS tokens to :root
- Add --primary-rgb override in [data-theme="light"] section
- Fix TS error: remove unused devUser prop from Route elements in App.tsx (API patching via window._devUser makes props redundant)
- Fix TS error: remove unused 'api' import from DevPanel.tsx

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/components/ConfettiReveal.js

@@ -0,0 +1,18 @@
+import { jsxs as _jsxs, jsx as _jsx } from "react/jsx-runtime";
+import { useEffect, useRef } from 'react';
+import confetti from 'canvas-confetti';
+import styles from './ConfettiReveal.module.css';
+export default function ConfettiReveal({ match, onDismiss }) {
+    const didFire = useRef(false);
+    const tip = match.userTip;
+    const points = tip.points;
+    useEffect(() => {
+        if (points === 3 && !didFire.current) {
+            didFire.current = true;
+            confetti({ particleCount: 120, spread: 80, origin: { y: 0.6 } });
+        }
+    }, [points]);
+    const resultLabel = points === 3 ? 'EXAKT! 🎉' : points === 1 ? 'Richtige Tendenz! 👏' : 'Knapp daneben... 😅';
+    const badgeClass = points === 3 ? styles.badgeExact : points === 1 ? styles.badgeTendency : styles.badgeWrong;
+    return (_jsx("div", { className: styles.overlay, onClick: onDismiss, children: _jsxs("div", { className: styles.card, onClick: e => e.stopPropagation(), children: [_jsxs("div", { className: styles.result, children: [match.homeTeam.shortName, " ", match.score.home, ":", match.score.away, " ", match.awayTeam.shortName] }), _jsxs("div", { className: styles.tipLine, children: ["Dein Tipp: ", tip.home, ":", tip.away] }), _jsxs("div", { className: `${styles.badge} ${badgeClass}`, children: [points, " ", points === 1 ? 'Punkt' : 'Punkte'] }), _jsx("div", { className: styles.label, children: resultLabel }), _jsx("button", { className: styles.dismissBtn, onClick: onDismiss, children: "Weiter" })] }) }));
+}

frontend/src/components/DevPanel.tsx

@@ -1,5 +1,5 @@
 import { useState } from 'react';
-import { api, Match } from '../api/client';
+import { Match } from '../api/client';
 import styles from './DevPanel.module.css';
 
 const DEV_USERS = [

frontend/src/components/StatsRing.js

@@ -0,0 +1,21 @@
+import { jsx as _jsx, jsxs as _jsxs } from "react/jsx-runtime";
+import styles from './StatsRing.module.css';
+export default function StatsRing({ exact, tendency, wrong, total }) {
+    const radius = 55;
+    const circumference = 2 * Math.PI * radius;
+    const all = exact + tendency + wrong || 1;
+    const segments = [
+        { value: exact / all, color: 'var(--gold)', label: 'Exakt' },
+        { value: tendency / all, color: 'var(--success)', label: 'Tendenz' },
+        { value: wrong / all, color: 'var(--error)', label: 'Falsch' },
+    ];
+    let offset = 0;
+    return (_jsxs("div", { className: styles.ring, children: [_jsxs("svg", { viewBox: "0 0 140 140", className: styles.svg, children: [_jsx("circle", { cx: "70", cy: "70", r: radius, fill: "none", stroke: "var(--surface-high)", strokeWidth: "12" }), segments.map((seg, i) => {
+                        if (seg.value === 0)
+                            return null;
+                        const dashArray = `${seg.value * circumference} ${circumference}`;
+                        const rotation = offset * 360 - 90;
+                        offset += seg.value;
+                        return (_jsx("circle", { cx: "70", cy: "70", r: radius, fill: "none", stroke: seg.color, strokeWidth: "12", strokeDasharray: dashArray, transform: `rotate(${rotation} 70 70)`, strokeLinecap: "round" }, i));
+                    }), _jsx("text", { x: "70", y: "65", textAnchor: "middle", dominantBaseline: "central", fill: "var(--text-primary)", fontSize: "28", fontWeight: "700", children: total }), _jsx("text", { x: "70", y: "85", textAnchor: "middle", fill: "var(--text-secondary)", fontSize: "11", children: "Punkte" })] }), _jsx("div", { className: styles.legend, children: segments.map((seg, i) => (_jsxs("span", { className: styles.legendItem, children: [_jsx("span", { className: styles.dot, style: { background: seg.color } }), seg.label, ": ", Math.round(seg.value * all)] }, i))) })] }));
+}

frontend/src/components/Toast.js

@@ -0,0 +1,10 @@
+import { jsx as _jsx } from "react/jsx-runtime";
+import { useEffect } from 'react';
+import styles from './Toast.module.css';
+export default function Toast({ message, onDismiss, duration = 5000 }) {
+    useEffect(() => {
+        const timer = setTimeout(onDismiss, duration);
+        return () => clearTimeout(timer);
+    }, [onDismiss, duration]);
+    return (_jsx("div", { className: styles.toast, onClick: onDismiss, children: message }));
+}