feat(mobile): Skia wave, wave player view, themes and playback settings (M5)

- My Wave is rendered with react-native-skia on the UI thread; physics
  and colour helpers moved to @pipu/core (wave-anim) and shared with web.
- Full-screen player honours ui_prefs.mobile_player (cover / wave).
- Theme switching (dark / light / system) via a theme context and
  useColors() across all screens.
- Profile: theme, wave variant, player view, sound quality sheet
  (Wi-Fi / mobile / downloads), recent-tracks cache clearing on next
  cold start, and a change-password sheet.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

apps/mobile/src/ui/UpdateDialog.tsx

@@ -4,7 +4,7 @@ import { AppState, Modal, Pressable, ScrollView, Text, View } from 'react-native
 
 import { useSession, useSessionCtx } from '../lib/session';
 import { updater } from '../lib/update';
-import { colors, radius } from '../theme';
+import { radius, useColors } from '../theme';
 import { Button } from './kit';
 
 export function useUpdateState() {
@@ -13,6 +13,7 @@ export function useUpdateState() {
 
 /** Проверяет обновления при запуске и возврате в приложение; показывает диалог с «Что нового». */
 export function UpdateDialog() {
+  const colors = useColors();
   const { t } = useTranslation();
   const session = useSession();
   const { server } = useSessionCtx();

apps/mobile/src/ui/downloads.tsx

@@ -4,7 +4,7 @@ import { useTranslation } from 'react-i18next';
 import { ActivityIndicator, Pressable } from 'react-native';
 
 import { downloads, type DownloadItem, type DownloadsState } from '../offline/downloads';
-import { colors } from '../theme';
+import { useColors } from '../theme';
 import { Icon } from './kit';
 
 export function useDownloads(): DownloadsState {
@@ -17,6 +17,7 @@ export function useDownloadItem(trackId: string): DownloadItem | undefined {
 
 /** Кнопка «скачать / скачано» у трека: повторное нажатие удаляет загрузку. */
 export function DownloadButton({ track, size = 26 }: { track: Track; size?: number }) {
+  const colors = useColors();
   const { t } = useTranslation();
   const item = useDownloadItem(track.id);
   const busy = item?.status === 'queued' || item?.status === 'downloading';

apps/mobile/src/ui/kit.tsx

@@ -6,6 +6,7 @@ import { useTranslation } from 'react-i18next';
 import {
   ActivityIndicator,
   Image,
+  Modal,
   Pressable,
   StyleSheet,
   Text,
@@ -20,15 +21,17 @@ import { SafeAreaView } from 'react-native-safe-area-context';
 import { useSessionCtx } from '../lib/session';
 import { downloads } from '../offline/downloads';
 import { absolute } from '../player/controller';
-import { colors, radius } from '../theme';
+import { radius, useColors, type Colors } from '../theme';
 
 export type IconName = ComponentProps<typeof MaterialIcons>['name'];
 
-export function Icon({ name, size = 22, color = colors.text2 }: { name: IconName; size?: number; color?: string }) {
-  return <MaterialIcons name={name} size={size} color={color} />;
+export function Icon({ name, size = 22, color }: { name: IconName; size?: number; color?: string }) {
+  const colors = useColors();
+  return <MaterialIcons name={name} size={size} color={color ?? colors.text2} />;
 }
 
 export function Screen({ children, scroll = false, style }: { children: ReactNode; scroll?: boolean; style?: StyleProp<ViewStyle> }) {
+  const s = useStyles();
   void scroll;
   return (
     <SafeAreaView style={[s.screen, style]} edges={['top', 'left', 'right']}>
@@ -38,10 +41,12 @@ export function Screen({ children, scroll = false, style }: { children: ReactNod
 }
 
 export function H1({ children }: { children: ReactNode }) {
+  const s = useStyles();
   return <Text style={s.h1}>{children}</Text>;
 }
 
 export function Muted({ children, style }: { children: ReactNode; style?: StyleProp<ViewStyle> }) {
+  const s = useStyles();
   return <Text style={[s.muted, style as object]}>{children}</Text>;
 }
 
@@ -52,6 +57,8 @@ export function Field({
   secure,
   ...rest
 }: TextInputProps & { label: string; error?: string; hint?: string; secure?: boolean }) {
+  const s = useStyles();
+  const colors = useColors();
   const { t } = useTranslation();
   const [shown, setShown] = useState(false);
   return (
@@ -98,6 +105,8 @@ export function Button({
   disabled?: boolean;
   icon?: IconName;
 }) {
+  const s = useStyles();
+  const colors = useColors();
   const bg = { primary: colors.accent, secondary: colors.surface3, ghost: 'transparent', danger: colors['danger-soft'] }[variant];
   const fg = { primary: '#fff', secondary: colors.text, ghost: colors.text2, danger: colors.danger }[variant];
   return (
@@ -115,6 +124,8 @@ export function Button({
 }
 
 export function ErrorBox({ children }: { children?: ReactNode }) {
+  const s = useStyles();
+  const colors = useColors();
   if (!children) return null;
   return (
     <View style={s.error} accessibilityRole="alert">
@@ -143,6 +154,7 @@ export function Cover({
   size: number;
   round?: boolean;
 }) {
+  const colors = useColors();
   const { server } = useSessionCtx();
   const remote = server ? absolute(server, album.cover_url) : undefined;
   const px = size * 2 <= 64 ? 64 : size * 2 <= 300 ? 300 : 1200;
@@ -183,6 +195,8 @@ export function TrackRow({
   meta?: string;
   trailing?: ReactNode;
 }) {
+  const s = useStyles();
+  const colors = useColors();
   const { t } = useTranslation();
   const liked = track.reaction === 'like';
   const saved = useSyncExternalStore(downloads.subscribe, () => downloads.isDownloaded(track.id));
@@ -225,6 +239,30 @@ export function TrackRow({
   );
 }
 
+/** Нижний лист: затемнение, заголовок, содержимое; закрывается кнопкой «назад» и тапом по фону. */
+export function Sheet({ visible, title, onClose, children }: { visible: boolean; title: string; onClose: () => void; children: ReactNode }) {
+  const colors = useColors();
+  const { t } = useTranslation();
+  return (
+    <Modal transparent animationType="slide" visible={visible} onRequestClose={onClose}>
+      <Pressable style={{ flex: 1, backgroundColor: colors.overlay }} onPress={onClose} accessibilityLabel={title} />
+      <SafeAreaView edges={['bottom']} style={{ backgroundColor: colors.surface, borderTopLeftRadius: radius.lg, borderTopRightRadius: radius.lg }}>
+        <View style={{ padding: 20, gap: 16 }}>
+          <View style={{ flexDirection: 'row', alignItems: 'center', justifyContent: 'space-between' }}>
+            <Text style={{ color: colors.text, fontSize: 18, fontWeight: '700' }} accessibilityRole="header">
+              {title}
+            </Text>
+            <Pressable onPress={onClose} hitSlop={10} accessibilityRole="button" accessibilityLabel={t('form.close')}>
+              <Icon name="close" color={colors.text2} />
+            </Pressable>
+          </View>
+          {children}
+        </View>
+      </SafeAreaView>
+    </Modal>
+  );
+}
+
 export function Segmented<T extends string>({
   value,
   options,
@@ -234,6 +272,8 @@ export function Segmented<T extends string>({
   options: { value: T; label: string }[];
   onChange: (v: T) => void;
 }) {
+  const s = useStyles();
+  const colors = useColors();
   return (
     <View style={s.segmented} accessibilityRole="tablist">
       {options.map((o) => (
@@ -251,29 +291,40 @@ export function Segmented<T extends string>({
   );
 }
 
-export const s = StyleSheet.create({
-  screen: { flex: 1, backgroundColor: colors.bg },
-  h1: { color: colors.text, fontSize: 26, fontWeight: '700', letterSpacing: -0.3 },
-  muted: { color: colors.text2, lineHeight: 21 },
-  label: { color: colors.text2, fontSize: 13, fontWeight: '600' },
-  input: {
-    height: 48,
-    paddingHorizontal: 14,
-    borderRadius: radius.md,
-    backgroundColor: colors.surface2,
-    borderWidth: 1,
-    borderColor: colors.line2,
-    color: colors.text,
-    fontSize: 15,
-  },
-  reveal: { position: 'absolute', right: 6, top: 6, width: 36, height: 36, alignItems: 'center', justifyContent: 'center' },
-  button: { height: 48, borderRadius: radius.md, flexDirection: 'row', gap: 8, alignItems: 'center', justifyContent: 'center', paddingHorizontal: 18 },
-  error: { padding: 12, borderRadius: 10, backgroundColor: colors['danger-soft'] },
-  row: { flexDirection: 'row', alignItems: 'center', gap: 12, paddingHorizontal: 16, paddingVertical: 8, minHeight: 60 },
-  num: { width: 44, textAlign: 'center', color: colors.text3, fontVariant: ['tabular-nums'] },
-  rowTitle: { color: colors.text, fontSize: 15, fontWeight: '500' },
-  rowSub: { color: colors.text2, fontSize: 13, marginTop: 2 },
-  duration: { color: colors.text3, fontSize: 12, fontVariant: ['tabular-nums'] },
-  segmented: { flexDirection: 'row', gap: 2, padding: 3, borderRadius: 10, backgroundColor: colors.surface2, alignSelf: 'flex-start' },
-  segment: { paddingHorizontal: 14, height: 32, borderRadius: 8, alignItems: 'center', justifyContent: 'center' },
-});
+const styles = new Map<Colors, ReturnType<typeof makeStyles>>();
+
+/** Стили кита под активную тему (создаются один раз на тему). */
+function useStyles() {
+  const colors = useColors();
+  let st = styles.get(colors);
+  if (!st) styles.set(colors, (st = makeStyles(colors)));
+  return st;
+}
+
+const makeStyles = (colors: Colors) =>
+  StyleSheet.create({
+    screen: { flex: 1, backgroundColor: colors.bg },
+    h1: { color: colors.text, fontSize: 26, fontWeight: '700', letterSpacing: -0.3 },
+    muted: { color: colors.text2, lineHeight: 21 },
+    label: { color: colors.text2, fontSize: 13, fontWeight: '600' },
+    input: {
+      height: 48,
+      paddingHorizontal: 14,
+      borderRadius: radius.md,
+      backgroundColor: colors.surface2,
+      borderWidth: 1,
+      borderColor: colors.line2,
+      color: colors.text,
+      fontSize: 15,
+    },
+    reveal: { position: 'absolute', right: 6, top: 6, width: 36, height: 36, alignItems: 'center', justifyContent: 'center' },
+    button: { height: 48, borderRadius: radius.md, flexDirection: 'row', gap: 8, alignItems: 'center', justifyContent: 'center', paddingHorizontal: 18 },
+    error: { padding: 12, borderRadius: 10, backgroundColor: colors['danger-soft'] },
+    row: { flexDirection: 'row', alignItems: 'center', gap: 12, paddingHorizontal: 16, paddingVertical: 8, minHeight: 60 },
+    num: { width: 44, textAlign: 'center', color: colors.text3, fontVariant: ['tabular-nums'] },
+    rowTitle: { color: colors.text, fontSize: 15, fontWeight: '500' },
+    rowSub: { color: colors.text2, fontSize: 13, marginTop: 2 },
+    duration: { color: colors.text3, fontSize: 12, fontVariant: ['tabular-nums'] },
+    segmented: { flexDirection: 'row', gap: 2, padding: 3, borderRadius: 10, backgroundColor: colors.surface2, alignSelf: 'flex-start' },
+    segment: { paddingHorizontal: 14, height: 32, borderRadius: 8, alignItems: 'center', justifyContent: 'center' },
+  });

apps/mobile/src/ui/settings.tsx

@@ -0,0 +1,110 @@
+import { ApiError, unwrap } from '@pipu/core';
+import { useState, useSyncExternalStore } from 'react';
+import { useTranslation } from 'react-i18next';
+import { Text, View } from 'react-native';
+
+import { QUALITIES, qualityPrefs, type Quality, type QualityPrefs } from '../lib/prefs';
+import { useSession } from '../lib/session';
+import { useColors } from '../theme';
+import { Button, ErrorBox, Field, Segmented, Sheet, useErrorText } from './kit';
+
+export function useQualityPrefs(): QualityPrefs {
+  return useSyncExternalStore(qualityPrefs.subscribe, qualityPrefs.get);
+}
+
+/** Лист «Качество звука»: Wi-Fi / сотовая / загрузки. */
+export function QualitySheet({ visible, onClose }: { visible: boolean; onClose: () => void }) {
+  const { t } = useTranslation();
+  const colors = useColors();
+  const prefs = useQualityPrefs();
+  const row = (key: keyof QualityPrefs) => (
+    <View style={{ gap: 8 }}>
+      <Text style={{ color: colors.text2, fontSize: 13, fontWeight: '600' }}>{t(`mobile.quality_${key}`)}</Text>
+      <Segmented<Quality>
+        value={prefs[key]}
+        options={QUALITIES.map((q) => ({ value: q, label: t(`mobile.q_${q}`) }))}
+        onChange={(q) => void qualityPrefs.set({ [key]: q })}
+      />
+    </View>
+  );
+  return (
+    <Sheet visible={visible} title={t('mobile.quality')} onClose={onClose}>
+      {row('wifi')}
+      {row('cellular')}
+      {row('download')}
+      <Text style={{ color: colors.text3, fontSize: 12 }}>{t('mobile.quality_hint')}</Text>
+    </Sheet>
+  );
+}
+
+/** Лист смены пароля: после смены сервер выдаёт новую пару токенов, остальные сессии завершаются. */
+export function PasswordSheet({ visible, onClose }: { visible: boolean; onClose: () => void }) {
+  const { t } = useTranslation();
+  const colors = useColors();
+  const session = useSession();
+  const errorText = useErrorText();
+  const [current, setCurrent] = useState('');
+  const [next, setNext] = useState('');
+  const [repeat, setRepeat] = useState('');
+  const [busy, setBusy] = useState(false);
+  const [error, setError] = useState<unknown>(null);
+  const [done, setDone] = useState(false);
+  const mismatch = repeat !== '' && repeat !== next;
+  const fieldErr = (f: string) => (error instanceof ApiError && error.fieldCode(f) ? errorText(error) : undefined);
+
+  const close = () => {
+    setCurrent('');
+    setNext('');
+    setRepeat('');
+    setError(null);
+    setDone(false);
+    onClose();
+  };
+  const submit = async () => {
+    setBusy(true);
+    setError(null);
+    try {
+      const tokens = unwrap(await session.client.POST('/api/v1/me/password', { body: { current_password: current, new_password: next } }));
+      await session.apply(tokens);
+      setDone(true);
+      setCurrent('');
+      setNext('');
+      setRepeat('');
+    } catch (e) {
+      setError(e);
+    } finally {
+      setBusy(false);
+    }
+  };
+
+  return (
+    <Sheet visible={visible} title={t('settings.password')} onClose={close}>
+      {done ? (
+        <>
+          <Text style={{ color: colors.ok }}>{t('settings.password_changed')}</Text>
+          <Button title={t('form.close')} onPress={close} />
+        </>
+      ) : (
+        <>
+          <Field label={t('settings.current_password')} value={current} onChangeText={setCurrent} secure autoComplete="current-password" error={fieldErr('current_password')} />
+          <Field label={t('settings.new_password')} value={next} onChangeText={setNext} secure autoComplete="new-password" error={fieldErr('new_password')} />
+          <Field
+            label={t('settings.repeat_password')}
+            value={repeat}
+            onChangeText={setRepeat}
+            secure
+            autoComplete="new-password"
+            error={mismatch ? t('form.passwords_mismatch') : undefined}
+          />
+          <ErrorBox>{error && !fieldErr('current_password') && !fieldErr('new_password') ? errorText(error) : null}</ErrorBox>
+          <Button
+            title={t('settings.change_password')}
+            busy={busy}
+            disabled={!current || !next || mismatch || repeat === ''}
+            onPress={() => void submit()}
+          />
+        </>
+      )}
+    </Sheet>
+  );
+}

apps/mobile/src/ui/wave/WaveOrb.tsx

@@ -0,0 +1,110 @@
+import { initialWaveState, step, WAVE_COLORS, waveScale, type WaveState } from '@pipu/core';
+import { Canvas, createPicture, Picture } from '@shopify/react-native-skia';
+import { useFocusEffect } from 'expo-router';
+import { useCallback, useEffect, useState, type ReactNode } from 'react';
+import { AppState, Pressable, View } from 'react-native';
+import Animated, { useAnimatedStyle, useDerivedValue, useFrameCallback, useReducedMotion, useSharedValue } from 'react-native-reanimated';
+
+import { useThemeName } from '../../theme';
+import { drawLiquid, drawOrb } from './draw';
+
+export interface WaveOrbProps {
+  variant: 'orb' | 'liquid';
+  playing: boolean;
+  bpm?: number;
+  energy?: number;
+  colors?: readonly string[];
+  size: number;
+  label?: string;
+  onPress?: () => void;
+  children?: ReactNode;
+}
+
+/**
+ * «Моя волна» на Skia (docs/design.md#3): в покое «дышит», при игре пульсирует в такт BPM с силой от energy,
+ * при нажатии сжимается с отскоком. Кадры считаются в UI-потоке; вне экрана и в фоне анимация стоит.
+ * Без `onPress` — декоративная визуализация (полноэкранный плеер в виде «волна»).
+ */
+export function WaveOrb({ variant, playing, bpm = 100, energy = 0.6, colors, size, label, onPress, children }: WaveOrbProps) {
+  const dark = useThemeName() === 'dark';
+  const reduced = useReducedMotion();
+  const [focused, setFocused] = useState(true);
+  useFocusEffect(
+    useCallback(() => {
+      setFocused(true);
+      return () => setFocused(false);
+    }, []),
+  );
+  const [foreground, setForeground] = useState(AppState.currentState === 'active');
+  const palette = (colors?.length === 3 ? colors : WAVE_COLORS) as [string, string, string];
+
+  const props = useSharedValue({ variant, playing, bpm, energy, colors: palette, dark, reduced });
+  const state = useSharedValue<WaveState>(initialWaveState(size));
+  const pressT = useSharedValue(0);
+  // Новый объект на каждом кадре — пересчёт картинки (одно и то же число могло бы не вызвать его).
+  const time = useSharedValue({ ts: 0, dt: 0 });
+
+  useEffect(() => {
+    props.value = { variant, playing, bpm, energy, colors: palette, dark, reduced };
+  }, [variant, playing, bpm, energy, palette[0], palette[1], palette[2], dark, reduced]);
+
+  useEffect(() => {
+    const sub = AppState.addEventListener('change', (st) => setForeground(st === 'active'));
+    return () => sub.remove();
+  }, []);
+
+  const frame = useFrameCallback((info) => {
+    time.value = { ts: info.timestamp, dt: Math.min(0.05, (info.timeSincePreviousFrame ?? 16) / 1000) };
+  }, false);
+  useEffect(() => {
+    frame.setActive(focused && foreground);
+  }, [focused, foreground]);
+
+  const S = size * 1.6;
+  const picture = useDerivedValue(() => {
+    const dt = time.value.dt;
+    const s = state.value;
+    Object.assign(s, props.value);
+    s.size = size;
+    if (pressT.value === 0 && s.pressT === 1) s.pressV -= 0.12; // отпустили — отскок
+    s.pressT = pressT.value;
+    step(s, dt);
+    const r = size * 0.5 * waveScale(s);
+    return createPicture(
+      (canvas) => {
+        if (s.variant === 'liquid') drawLiquid(canvas, S / 2, S / 2, r, s);
+        else drawOrb(canvas, S / 2, S / 2, r, s);
+      },
+      { width: S, height: S },
+    );
+  });
+  const labelStyle = useAnimatedStyle(() => {
+    void time.value.ts; // пересчёт на каждом кадре
+    const s = state.value;
+    return { transform: [{ scale: waveScale(s) + s.pulse * 0.03 }] };
+  });
+
+  const body = (
+    <View style={{ width: size, height: size, alignItems: 'center', justifyContent: 'center' }}>
+      <Canvas style={{ position: 'absolute', width: S, height: S, left: (size - S) / 2, top: (size - S) / 2 }} pointerEvents="none">
+        <Picture picture={picture} />
+      </Canvas>
+      <Animated.View style={[{ alignItems: 'center', justifyContent: 'center', gap: 4 }, labelStyle]} pointerEvents="none">
+        {children}
+      </Animated.View>
+    </View>
+  );
+  if (!onPress) return <View accessibilityElementsHidden importantForAccessibility="no-hide-descendants">{body}</View>;
+  return (
+    <Pressable
+      onPress={onPress}
+      onPressIn={() => (pressT.value = 1)}
+      onPressOut={() => (pressT.value = 0)}
+      accessibilityRole="button"
+      accessibilityLabel={label}
+      accessibilityState={{ selected: playing }}
+    >
+      {body}
+    </Pressable>
+  );
+}

apps/mobile/src/ui/wave/draw.ts

@@ -0,0 +1,129 @@
+// Отрисовка «Моей волны» на Skia — тот же алгоритм, что Canvas 2D в вебе (apps/web/src/widgets/wave/draw.ts).
+// Функции — worklet'ы: кадр собирается в UI-потоке Reanimated, JS-поток не участвует.
+import { mix, rgb, rgba, type Rgb, type WaveState } from '@pipu/core';
+import { BlendMode, ClipOp, PaintStyle, Skia, TileMode, type SkCanvas, type SkPaint } from '@shopify/react-native-skia';
+
+function radial(cx: number, cy: number, r0: number, r1: number, colors: string[], pos: number[]): SkPaint {
+  'worklet';
+  const p = Skia.Paint();
+  p.setAntiAlias(true);
+  p.setShader(
+    Skia.Shader.MakeTwoPointConicalGradient(
+      { x: cx, y: cy },
+      r0,
+      { x: cx, y: cy },
+      r1,
+      colors.map((c) => Skia.Color(c)),
+      pos,
+      TileMode.Clamp,
+    ),
+  );
+  return p;
+}
+
+/** Градиент со смещённым центром (аналог createRadialGradient(x0, y0, 0, x1, y1, r)). */
+function conical(x0: number, y0: number, x1: number, y1: number, r: number, colors: string[]): SkPaint {
+  'worklet';
+  const p = Skia.Paint();
+  p.setAntiAlias(true);
+  p.setShader(Skia.Shader.MakeTwoPointConicalGradient({ x: x0, y: y0 }, 0, { x: x1, y: y1 }, r, colors.map((c) => Skia.Color(c)), [0, 1], TileMode.Clamp));
+  return p;
+}
+
+export function drawOrb(canvas: SkCanvas, cx: number, cy: number, r: number, s: WaveState) {
+  'worklet';
+  const t = s.t;
+  const c1 = rgb(s.colors[0]);
+  const c2 = rgb(s.colors[1]);
+  const c3 = rgb(s.colors[2]);
+  canvas.drawCircle(
+    cx,
+    cy,
+    r * 1.65,
+    radial(cx, cy, r * 0.6, r * 1.65, [rgba(c1, 0.32 + s.pulse * 0.35 + s.hover * 0.12), rgba(c2, 0.1 + s.pulse * 0.12), rgba(c1, 0)], [0, 0.5, 1]),
+  );
+
+  canvas.save();
+  const clip = Skia.Path.Make();
+  clip.addCircle(cx, cy, r);
+  canvas.clipPath(clip, ClipOp.Intersect, true);
+  const bg = Skia.Paint();
+  bg.setColor(Skia.Color(s.dark ? '#060B1C' : '#0B1533'));
+  const box = Skia.XYWHRect(cx - r, cy - r, r * 2, r * 2);
+  canvas.drawRect(box, bg);
+
+  const blobs: Rgb[] = [c1, c2, c3, c1, c2];
+  for (let i = 0; i < blobs.length; i++) {
+    const c = blobs[i]!;
+    const a = t * (0.25 + i * 0.07) + i * 1.7;
+    const bx = cx + Math.cos(a) * r * (0.35 + 0.12 * Math.sin(t * 0.3 + i)) + s.mx * r * 0.18 * s.hover;
+    const by = cy + Math.sin(a * 1.3) * r * 0.38 + s.my * r * 0.18 * s.hover;
+    const br = r * (0.75 + 0.15 * Math.sin(t * 0.7 + i) + s.pulse * 0.2);
+    const g = radial(bx, by, 0, br, [rgba(c, 0.55), rgba(c, 0)], [0, 1]);
+    g.setBlendMode(BlendMode.Plus);
+    canvas.drawRect(box, g);
+  }
+
+  const lines = 9;
+  for (let l = 0; l < lines; l++) {
+    const yy = cy - r * 0.75 + (l / (lines - 1)) * r * 1.5;
+    const amp = r * (0.03 + 0.05 * s.amp + 0.09 * s.pulse + 0.03 * s.hover);
+    const path = Skia.Path.Make();
+    for (let x = -r; x <= r; x += 4) {
+      const y = yy + Math.sin((x / r) * (3 + l * 0.4) + t * (1.2 + l * 0.15) + l) * amp * Math.cos((x / r) * 1.4);
+      if (x === -r) path.moveTo(cx + x, y);
+      else path.lineTo(cx + x, y);
+    }
+    const stroke = Skia.Paint();
+    stroke.setAntiAlias(true);
+    stroke.setStyle(PaintStyle.Stroke);
+    stroke.setStrokeWidth(1.5);
+    stroke.setColor(Skia.Color(`rgba(255,255,255,${0.05 + 0.05 * s.amp + (l % 3 === 0 ? 0.05 : 0)})`));
+    stroke.setBlendMode(BlendMode.Plus);
+    canvas.drawPath(path, stroke);
+  }
+
+  canvas.drawRect(box, conical(cx - r * 0.35, cy - r * 0.45, cx - r * 0.35, cy - r * 0.45, r * 0.9, ['rgba(255,255,255,0.18)', 'rgba(255,255,255,0)']));
+  canvas.restore();
+
+  const ring = Skia.Paint();
+  ring.setAntiAlias(true);
+  ring.setStyle(PaintStyle.Stroke);
+  ring.setStrokeWidth(1);
+  ring.setColor(Skia.Color(rgba(mix(c1, [255, 255, 255], 0.4), 0.35 + s.pulse * 0.3)));
+  canvas.drawCircle(cx, cy, r - 0.5, ring);
+}
+
+export function drawLiquid(canvas: SkCanvas, cx: number, cy: number, r: number, s: WaveState) {
+  'worklet';
+  const t = s.t;
+  const cols: Rgb[] = [rgb(s.colors[0]), rgb(s.colors[1]), rgb(s.colors[2])];
+  canvas.drawCircle(cx, cy, r * 1.6, radial(cx, cy, r * 0.4, r * 1.6, [rgba(cols[0]!, 0.3 + s.pulse * 0.3), rgba(cols[0]!, 0)], [0, 1]));
+  for (let L = 0; L < 3; L++) {
+    const path = Skia.Path.Make();
+    const P = 140;
+    for (let j = 0; j <= P; j++) {
+      const th = (j / P) * Math.PI * 2;
+      const w =
+        1 +
+        0.06 * Math.sin(3 * th + t * (0.9 + L * 0.2) + L * 2) +
+        0.04 * Math.sin(5 * th - t * (1.3 + L * 0.1) + L) +
+        0.03 * Math.sin(7 * th + t * 1.7) * (0.5 + s.amp) +
+        0.08 * s.pulse * Math.sin(2 * th + L) +
+        0.16 * s.hover * Math.pow(Math.max(0, Math.cos(th - s.ang)), 3);
+      const rr = r * (0.86 - L * 0.07) * w;
+      const x = cx + Math.cos(th) * rr;
+      const y = cy + Math.sin(th) * rr;
+      if (j) path.lineTo(x, y);
+      else path.moveTo(x, y);
+    }
+    path.close();
+    const ox = Math.cos(t * 0.4 + L * 2) * r * 0.3;
+    const oy = Math.sin(t * 0.5 + L) * r * 0.3;
+    const c = cols[L]!;
+    const g = conical(cx + ox, cy + oy, cx, cy, r * 1.1, [rgba(mix(c, [255, 255, 255], 0.25), 0.85), rgba(c, 0.25)]);
+    g.setAlphaf(s.dark ? 0.6 : 0.75);
+    g.setBlendMode(s.dark ? BlendMode.Plus : BlendMode.SrcOver);
+    canvas.drawPath(path, g);
+  }
+}