feat: add dynamic weather hero effects

components/weather/weather-effects.tsx

@@ -0,0 +1,75 @@
+"use client";
+
+import { motion, useReducedMotion } from "framer-motion";
+import type { SynopStation, WeatherMood } from "@/types/imgw";
+
+const rainDrops = Array.from({ length: 32 }, (_, index) => ({
+  left: `${(index * 29 + 7) % 100}%`,
+  delay: (index % 11) * 0.13,
+  duration: 0.72 + (index % 5) * 0.12,
+  height: 12 + (index % 4) * 4,
+}));
+
+const windLines = Array.from({ length: 7 }, (_, index) => ({
+  top: `${18 + index * 11}%`,
+  delay: index * 0.22,
+  width: 70 + (index % 3) * 34,
+}));
+
+const stars = Array.from({ length: 16 }, (_, index) => ({
+  left: `${(index * 37 + 11) % 96}%`,
+  top: `${(index * 23 + 8) % 72}%`,
+  delay: (index % 6) * 0.35,
+}));
+
+export function WeatherEffects({ station, mood }: { station: SynopStation; mood: WeatherMood }) {
+  const reduceMotion = useReducedMotion();
+  const rainfall = station.rainfall ?? 0;
+  const isRaining = rainfall >= 0.1;
+  const visibleDrops = rainfall >= 5 ? rainDrops : rainDrops.slice(0, 18);
+  const isWindy = (station.windSpeed ?? 0) >= 8;
+
+  return (
+    <div aria-hidden="true" className="pointer-events-none absolute inset-0 overflow-hidden">
+      {mood === "warm" && (
+        <motion.div
+          animate={reduceMotion ? undefined : { scale: [1, 1.08, 1], opacity: [0.4, 0.58, 0.4] }}
+          transition={{ duration: 7, repeat: Infinity, ease: "easeInOut" }}
+          className="absolute -right-16 -top-20 size-64 rounded-full bg-amber-200/45 blur-3xl"
+        />
+      )}
+      {mood === "night" && stars.map((star, index) => (
+        <motion.span
+          key={index}
+          animate={reduceMotion ? undefined : { opacity: [0.2, 0.75, 0.2] }}
+          transition={{ duration: 2.4, delay: star.delay, repeat: Infinity, ease: "easeInOut" }}
+          className="absolute size-1 rounded-full bg-white/75"
+          style={{ left: star.left, top: star.top }}
+        />
+      ))}
+      {isWindy && windLines.map((line, index) => (
+        <motion.span
+          key={index}
+          initial={{ x: "-30%", opacity: 0 }}
+          animate={reduceMotion ? { opacity: 0.28 } : { x: ["-30%", "135%"], opacity: [0, 0.35, 0] }}
+          transition={{ duration: 3.4, delay: line.delay, repeat: Infinity, ease: "linear" }}
+          className="absolute h-px rounded-full bg-white/60"
+          style={{ top: line.top, width: line.width }}
+        />
+      ))}
+      {isRaining && !reduceMotion && visibleDrops.map((drop, index) => (
+        <motion.span
+          key={index}
+          initial={{ y: "-8vh", opacity: 0 }}
+          animate={{ y: ["-8vh", "85vh"], x: [0, -12], opacity: [0, 0.5, 0.12] }}
+          transition={{ duration: drop.duration, delay: drop.delay, repeat: Infinity, ease: "linear" }}
+          className="absolute -top-8 w-px rounded-full bg-cyan-100/80"
+          style={{ height: drop.height, left: drop.left, transform: "rotate(14deg)" }}
+        />
+      ))}
+      {mood === "cold" && (
+        <div className="absolute inset-x-0 bottom-0 h-28 bg-gradient-to-t from-cyan-100/20 to-transparent" />
+      )}
+    </div>
+  );
+}

components/weather/weather-hero.tsx

@@ -16,6 +16,7 @@ import {
 } from "@/lib/weather-utils";
 import type { SynopStation } from "@/types/imgw";
 import { WeatherIcon } from "@/components/weather/weather-icon";
+import { WeatherEffects } from "@/components/weather/weather-effects";
 import { useI18n } from "@/lib/i18n";
 
 export function WeatherHero({ station, locationName, distanceKm }: { station: SynopStation; locationName?: string; distanceKm?: number }) {
@@ -36,6 +37,7 @@ export function WeatherHero({ station, locationName, distanceKm }: { station: Sy
       transition={{ duration: 0.55, ease: "easeOut" }}
       className={`relative isolate overflow-hidden rounded-[2rem] bg-gradient-to-br ${moodGradient(mood)} px-5 py-6 text-white shadow-[0_24px_75px_rgba(15,23,42,0.24)] sm:px-8 sm:py-8 lg:px-10`}
     >
+      <WeatherEffects station={station} mood={mood} />
       <div className="absolute -right-20 -top-20 size-72 rounded-full bg-white/15 blur-3xl" />
       <div className="absolute -bottom-24 -left-16 size-72 rounded-full bg-cyan-200/15 blur-3xl" />
       <div className="relative">
@@ -45,7 +47,7 @@ export function WeatherHero({ station, locationName, distanceKm }: { station: Sy
         </div>
         <div className="mt-8 flex items-end justify-between gap-3 sm:mt-10">
           <div>
-            <div className="text-[5.8rem] font-extralight leading-[0.85] tracking-[-0.11em] sm:text-[8rem]">
+            <div className="text-[5.8rem] font-medium leading-[0.85] tracking-[-0.11em] drop-shadow-[0_10px_24px_rgba(15,23,42,0.16)] sm:text-[8rem]">
               {formatTemperature(station.temperature, language)}
             </div>
             <p className="mt-5 text-xl font-medium tracking-tight sm:text-2xl">{getWeatherDescription(station, language)}</p>

components/weather/weather-icon.tsx

@@ -1,9 +1,9 @@
-import { CloudRain, CloudSun, MoonStar, Snowflake, Sun, Wind } from "lucide-react";
+import { CloudRain, CloudSun, MoonStar, Snowflake, ThermometerSun, Wind } from "lucide-react";
 import type { WeatherMood } from "@/types/imgw";
 
 export function WeatherIcon({ mood, className = "" }: { mood: WeatherMood; className?: string }) {
   const Icon = {
-    clear: Sun,
+    warm: ThermometerSun,
     rain: CloudRain,
     wind: Wind,
     cold: Snowflake,