From 4d81e6ccddeeec0346f93cd4df4772b0ea07e774 Mon Sep 17 00:00:00 2001
From: Ben Miller <benjimanmiller@gmail.com>
Date: Tue, 20 Oct 2026 13:11:58 -0500
Subject: [PATCH] feat: add core simulation engine, entities, weather, UI, and
 audio systems

---
 css/style.css        |  52 ++++-
 index.html           |   8 +
 js/audio.js          | 469 +++++++++++++++++++++++++++++++++++++++++++
 js/entities/sheep.js |  10 +-
 js/entities/wolf.js  |  13 +-
 js/simulation.js     |  73 ++++---
 js/ui.js             |  63 ++++++
 js/weather.js        | 284 ++++++++++++++++----------
 8 files changed, 839 insertions(+), 133 deletions(-)
 create mode 100644 js/audio.js

diff --git a/css/style.css b/css/style.css
index 16576dd..034b1d1 100644
--- a/css/style.css
+++ b/css/style.css
@@ -196,6 +196,12 @@ body {
   border-color: rgba(255, 255, 255, 0.2);
 }
 
+.btn-muted {
+  opacity: 0.52;
+  filter: grayscale(0.7);
+  background: rgba(255, 255, 255, 0.04);
+}
+
 .btn-text {
   background: transparent;
   border: none;
@@ -761,12 +767,54 @@ input[type="range"]::-webkit-slider-thumb:hover {
 }
 
 /* --- Fullscreen / Screen Saver Mode --- */
-.app-layout.fullscreen-mode .top-nav,
-.app-layout.fullscreen-mode .sidebar-panel {
+.app-layout.fullscreen-mode .sidebar-panel,
+.app-layout.fullscreen-mode .top-nav .brand,
+.app-layout.fullscreen-mode .top-nav .header-actions {
   display: none !important;
 }
 
+.app-layout.fullscreen-mode .top-nav {
+  position: fixed !important;
+  top: 14px !important;
+  left: 50% !important;
+  transform: translateX(-50%) !important;
+  z-index: 990 !important;
+  width: auto !important;
+  min-width: unset !important;
+  max-width: calc(100vw - 220px) !important;
+  background: rgba(14, 20, 28, 0.82) !important;
+  backdrop-filter: blur(16px) !important;
+  -webkit-backdrop-filter: blur(16px) !important;
+  border: 1px solid rgba(255, 255, 255, 0.16) !important;
+  border-radius: 30px !important;
+  padding: 6px 14px !important;
+  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45) !important;
+  display: flex !important;
+  align-items: center !important;
+  justify-content: center !important;
+  pointer-events: auto !important;
+}
+
+.app-layout.fullscreen-mode .top-nav .stats-ribbon {
+  display: flex !important;
+  align-items: center !important;
+  gap: 8px !important;
+  flex-wrap: nowrap !important;
+}
+
+.app-layout.fullscreen-mode .top-nav .stat-badge {
+  background: rgba(255, 255, 255, 0.06) !important;
+  border: 1px solid rgba(255, 255, 255, 0.12) !important;
+  padding: 4px 10px !important;
+  border-radius: 20px !important;
+  font-size: 0.8rem !important;
+  white-space: nowrap !important;
+}
+
 .app-layout.fullscreen-mode .main-workspace {
+  position: absolute !important;
+  top: 0 !important;
+  left: 0 !important;
   height: 100vh !important;
   width: 100vw !important;
 }
diff --git a/index.html b/index.html
index 4f381c3..1708746 100644
--- a/index.html
+++ b/index.html
@@ -58,6 +58,14 @@
           <svg viewBox="0 0 24 24" width="18" height="18" fill="currentColor"><path d="M17.65 6.35C16.2 4.9 14.21 4 12 4c-4.42 0-7.99 3.58-7.99 8s3.57 8 7.99 8c3.73 0 6.84-2.55 7.73-6h-2.08c-.82 2.33-3.04 4-5.65 4-3.31 0-6-2.69-6-6s2.69-6 6-6c1.66 0 3.14.69 4.22 1.78L13 11h7V4l-2.35 2.35z"/></svg>
           <span>Restart</span>
         </button>
+        <button id="btnSound" class="btn btn-secondary" title="Toggle Sound FX (Chomps, Bites, Chimes)">
+          <span id="soundIcon">🔊</span>
+          <span id="soundText">Sound</span>
+        </button>
+        <button id="btnMusic" class="btn btn-secondary" title="Toggle Elevator Music BGM">
+          <span id="musicIcon">🎵</span>
+          <span id="musicText">Music</span>
+        </button>
         <button id="btnFullscreen" class="btn btn-secondary" title="Fullscreen Screen Saver Mode">
           <svg viewBox="0 0 24 24" width="18" height="18" fill="currentColor"><path d="M7 14H5v5h5v-2H7v-3zm-2-4h2V7h3V5H5v5zm12 7h-3v2h5v-5h-2v3zM14 5v2h3v3h2V5h-5z"/></svg>
           <span>Fullscreen</span>
diff --git a/js/audio.js b/js/audio.js
new file mode 100644
index 0000000..af2d4c1
--- /dev/null
+++ b/js/audio.js
@@ -0,0 +1,469 @@
+/**
+ * Synthesized Web Audio Sound Manager
+ * Features:
+ * 1. Retro 8-bit / MIDI procedural sound effects for sheep nibbles, wolf bites, mating chimes, and sprout bloops.
+ *    Tuned to be soft, gentle, and non-intrusive.
+ * 2. Chill, slow, melodic loopable background music ("elevator music" / lo-fi bossa nova).
+ * 3. 100% INDEPENDENT Sound FX and Music toggles — muting sound never affects music, and vice versa.
+ */
+
+export class SoundManager {
+  constructor() {
+    this.ctx = null;
+    this.isMuted = false;        // Controls Sound FX (chomps, bites, bloops)
+    this.musicEnabled = true;    // Controls Elevator Music BGM independently
+    this.isMusicPlaying = false;
+
+    // Volume levels (soft, balanced, comfortable listening)
+    this.sfxVolume = 0.45;
+    this.musicVolume = 0.15;
+
+    this.sfxGain = null;
+    this.musicGain = null;
+
+    // Polyphony throttle to prevent distortion or rapid volume spikes during large flock grazing
+    this.lastSheepChompTime = 0;
+    this.lastWolfChompTime = 0;
+    this.lastSproutTime = 0;
+
+    // Music scheduler state
+    this.musicTimer = null;
+    this.currentStep = 0;
+    this.nextNoteTime = 0;
+    this.tempo = 66; // BPM (slow, relaxed elevator music tempo)
+    this.secondsPerBeat = 60.0 / this.tempo;
+    this.secondsPerStep = this.secondsPerBeat / 2; // Eighth note steps
+
+    // Load saved preferences
+    const savedMuted = localStorage.getItem('LifeSimulator_Muted');
+    if (savedMuted !== null) {
+      this.isMuted = savedMuted === 'true';
+    }
+    const savedMusic = localStorage.getItem('LifeSimulator_MusicEnabled');
+    if (savedMusic !== null) {
+      this.musicEnabled = savedMusic === 'true';
+    }
+  }
+
+  ensureContext() {
+    if (!this.ctx) {
+      const AudioCtx = window.AudioContext || window.webkitAudioContext;
+      if (AudioCtx) {
+        this.ctx = new AudioCtx();
+
+        // 1. Independent SFX bus -> connects directly to speakers
+        this.sfxGain = this.ctx.createGain();
+        this.sfxGain.gain.setValueAtTime(this.isMuted ? 0 : this.sfxVolume, this.ctx.currentTime);
+        this.sfxGain.connect(this.ctx.destination);
+
+        // 2. Independent Music bus -> connects directly to speakers (never affected by sfx mute)
+        this.musicGain = this.ctx.createGain();
+        this.musicGain.gain.setValueAtTime(this.musicEnabled ? this.musicVolume : 0, this.ctx.currentTime);
+        this.musicGain.connect(this.ctx.destination);
+      }
+    }
+    if (this.ctx && this.ctx.state === 'suspended') {
+      this.ctx.resume().catch(() => {});
+    }
+  }
+
+  /**
+   * Toggles Sound FX ON / OFF independently of Music
+   */
+  toggleMute() {
+    this.ensureContext();
+    this.isMuted = !this.isMuted;
+    localStorage.setItem('LifeSimulator_Muted', this.isMuted.toString());
+
+    if (this.sfxGain && this.ctx) {
+      this.sfxGain.gain.setTargetAtTime(
+        this.isMuted ? 0 : this.sfxVolume,
+        this.ctx.currentTime,
+        0.03
+      );
+    }
+    return this.isMuted;
+  }
+
+  /**
+   * Toggles Elevator Music ON / OFF independently of Sound FX
+   */
+  toggleMusic() {
+    this.ensureContext();
+    this.musicEnabled = !this.musicEnabled;
+    localStorage.setItem('LifeSimulator_MusicEnabled', this.musicEnabled.toString());
+
+    if (this.musicGain && this.ctx) {
+      this.musicGain.gain.setTargetAtTime(
+        this.musicEnabled ? this.musicVolume : 0,
+        this.ctx.currentTime,
+        0.04
+      );
+    }
+
+    if (this.musicEnabled) {
+      this.startMusic();
+    } else {
+      this.stopMusic();
+    }
+    return this.musicEnabled;
+  }
+
+  // =========================================================================
+  // 1. PROCEDURAL "ELEVATOR MUSIC" CHILL BGM (LO-FI BOSSA / MEADOW ELEVATOR)
+  // =========================================================================
+  startMusic() {
+    if (!this.musicEnabled) return;
+    this.ensureContext();
+    if (!this.ctx || this.isMusicPlaying) return;
+
+    this.isMusicPlaying = true;
+    this.currentStep = 0;
+    this.nextNoteTime = this.ctx.currentTime + 0.1;
+    this._scheduleLoop();
+  }
+
+  stopMusic() {
+    this.isMusicPlaying = false;
+    if (this.musicTimer) {
+      clearTimeout(this.musicTimer);
+      this.musicTimer = null;
+    }
+  }
+
+  _scheduleLoop() {
+    if (!this.isMusicPlaying || !this.ctx) return;
+
+    // Lookahead scheduling (schedule up to 0.4s into future for gapless playback)
+    const scheduleAheadTime = 0.4;
+    while (this.nextNoteTime < this.ctx.currentTime + scheduleAheadTime) {
+      this._playStep(this.currentStep, this.nextNoteTime);
+      this.nextNoteTime += this.secondsPerStep;
+      this.currentStep = (this.currentStep + 1) % 64; // 8 bars * 8 eighth notes = 64 steps
+    }
+
+    this.musicTimer = setTimeout(() => this._scheduleLoop(), 120);
+  }
+
+  _playStep(step, time) {
+    if (!this.musicEnabled) return;
+
+    const bar = Math.floor(step / 8);
+    const stepInBar = step % 8;
+
+    const chords = [
+      // 0: Cmaj7 (C3, G3, B3, E4)
+      { root: 130.81, notes: [130.81, 196.00, 246.94, 329.63] },
+      // 1: Am7 (A2, E3, G3, C4)
+      { root: 110.00, notes: [110.00, 164.81, 196.00, 261.63] },
+      // 2: Dm7 (D3, A3, C4, F4)
+      { root: 146.83, notes: [146.83, 220.00, 261.63, 349.23] },
+      // 3: G7 (G2, D3, F3, B3)
+      { root: 98.00,  notes: [98.00,  146.83, 174.61, 246.94] },
+      // 4: Em7 (E3, B3, D4, G4)
+      { root: 164.81, notes: [164.81, 246.94, 293.66, 392.00] },
+      // 5: A7 (A2, E3, G3, C#4)
+      { root: 110.00, notes: [110.00, 164.81, 196.00, 277.18] },
+      // 6: Dm7 (D3, A3, C4, F4)
+      { root: 146.83, notes: [146.83, 220.00, 261.63, 349.23] },
+      // 7: G7sus4 (G2, D3, F3, C4) -> G7 (B3)
+      { root: 98.00,  notes: [98.00,  146.83, 174.61, stepInBar < 4 ? 261.63 : 246.94] }
+    ];
+
+    const currentChord = chords[bar];
+
+    // A. Warm Rhodes / Electric Piano Chords (Gentle strum on beats 0, 3, 5 for bossa elevator vibe)
+    if (stepInBar === 0 || stepInBar === 3 || stepInBar === 5) {
+      const chordVel = stepInBar === 0 ? 0.08 : 0.055;
+      for (let n = 1; n < currentChord.notes.length; n++) {
+        this._synthRhodesKey(time + (n - 1) * 0.012, currentChord.notes[n], 0.65, chordVel);
+      }
+    }
+
+    // B. Soft Walking Bass (Downbeats 0 and 4)
+    if (stepInBar === 0) {
+      this._synthBassNote(time, currentChord.root, 0.45, 0.11);
+    } else if (stepInBar === 4) {
+      this._synthBassNote(time, currentChord.notes[1] * 0.5, 0.4, 0.08);
+    }
+
+    // C. Relaxing Melodic Motifs (Soulful, slow pentatonic lines floating above)
+    const melodyMap = {
+      2: 392.00, // G4
+      4: 493.88, // B4
+      6: 523.25, // C5
+      8: 493.88, // B4
+      11: 440.00, // A4
+      13: 392.00, // G4
+      18: 349.23, // F4
+      20: 392.00, // G4
+      22: 440.00, // A4
+      26: 392.00, // G4
+      28: 293.66, // D4
+      34: 587.33, // D5
+      36: 523.25, // C5
+      38: 493.88, // B4
+      42: 440.00, // A4
+      44: 415.30, // G#4
+      46: 440.00, // A4
+      50: 392.00, // G4
+      52: 349.23, // F4
+      54: 329.63, // E4
+      58: 293.66, // D4
+      60: 246.94  // B3
+    };
+
+    if (melodyMap[step]) {
+      this._synthMelodyNote(time, melodyMap[step], 0.5, 0.075);
+    }
+  }
+
+  _synthRhodesKey(time, freq, duration, vel) {
+    if (!this.ctx || !this.musicGain) return;
+    const osc = this.ctx.createOscillator();
+    const gain = this.ctx.createGain();
+    const filter = this.ctx.createBiquadFilter();
+
+    osc.type = 'triangle';
+    osc.frequency.setValueAtTime(freq, time);
+
+    filter.type = 'lowpass';
+    filter.frequency.setValueAtTime(750, time);
+    filter.frequency.exponentialRampToValueAtTime(320, time + duration);
+
+    gain.gain.setValueAtTime(vel, time);
+    gain.gain.exponentialRampToValueAtTime(0.001, time + duration);
+
+    osc.connect(filter);
+    filter.connect(gain);
+    gain.connect(this.musicGain);
+
+    osc.start(time);
+    osc.stop(time + duration + 0.02);
+  }
+
+  _synthBassNote(time, freq, duration, vel) {
+    if (!this.ctx || !this.musicGain) return;
+    const osc = this.ctx.createOscillator();
+    const gain = this.ctx.createGain();
+    const filter = this.ctx.createBiquadFilter();
+
+    osc.type = 'sine';
+    osc.frequency.setValueAtTime(freq, time);
+
+    filter.type = 'lowpass';
+    filter.frequency.setValueAtTime(240, time);
+
+    gain.gain.setValueAtTime(vel, time);
+    gain.gain.exponentialRampToValueAtTime(0.001, time + duration);
+
+    osc.connect(filter);
+    filter.connect(gain);
+    gain.connect(this.musicGain);
+
+    osc.start(time);
+    osc.stop(time + duration + 0.02);
+  }
+
+  _synthMelodyNote(time, freq, duration, vel) {
+    if (!this.ctx || !this.musicGain) return;
+    const osc = this.ctx.createOscillator();
+    const gain = this.ctx.createGain();
+    const filter = this.ctx.createBiquadFilter();
+
+    osc.type = 'sine';
+    osc.frequency.setValueAtTime(freq, time);
+
+    filter.type = 'lowpass';
+    filter.frequency.setValueAtTime(1200, time);
+
+    gain.gain.setValueAtTime(vel, time);
+    gain.gain.exponentialRampToValueAtTime(0.001, time + duration);
+
+    osc.connect(filter);
+    filter.connect(gain);
+    gain.connect(this.musicGain);
+
+    osc.start(time);
+    osc.stop(time + duration + 0.02);
+  }
+
+  // =========================================================================
+  // 2. PROCEDURAL SOUND EFFECTS (SOFTER, GENTLE CHOMPS, BITES, BLOOPS)
+  // =========================================================================
+
+  /**
+   * Sheep Nibble / Chomp Sound
+   * Soft, gentle, subtle retro pasture munch: low-gain dual micro-nibble.
+   */
+  playSheepChomp() {
+    if (this.isMuted) return;
+    this.ensureContext();
+    if (!this.ctx || this.ctx.state !== 'running') return;
+
+    const now = this.ctx.currentTime;
+    if (now - this.lastSheepChompTime < 0.14) return; // Polyphony throttle
+    this.lastSheepChompTime = now;
+
+    // Pitch variation
+    const pitchMod = 0.93 + Math.random() * 0.14;
+    const baseFreq = 440 * pitchMod;
+
+    // Soft nibble clicks (much lower, comfortable volume level)
+    this._synthChompClick(now, baseFreq, 0.045, 0.065);
+    this._synthChompClick(now + 0.04, baseFreq * 0.82, 0.05, 0.075);
+  }
+
+  _synthChompClick(startTime, freq, duration, gainLevel) {
+    const osc = this.ctx.createOscillator();
+    const gain = this.ctx.createGain();
+    const filter = this.ctx.createBiquadFilter();
+
+    osc.type = 'triangle';
+    osc.frequency.setValueAtTime(freq, startTime);
+    osc.frequency.exponentialRampToValueAtTime(freq * 0.5, startTime + duration);
+
+    filter.type = 'bandpass';
+    filter.frequency.setValueAtTime(freq * 1.5, startTime);
+    filter.Q.setValueAtTime(2.2, startTime);
+
+    gain.gain.setValueAtTime(gainLevel, startTime);
+    gain.gain.exponentialRampToValueAtTime(0.001, startTime + duration);
+
+    osc.connect(filter);
+    filter.connect(gain);
+    gain.connect(this.sfxGain);
+
+    osc.start(startTime);
+    osc.stop(startTime + duration + 0.01);
+  }
+
+  /**
+   * Wolf Predatory Bite / Chomp Sound
+   * Deep arcade crunch: comfortable, softened volume level.
+   */
+  playWolfChomp() {
+    if (this.isMuted) return;
+    this.ensureContext();
+    if (!this.ctx || this.ctx.state !== 'running') return;
+
+    const now = this.ctx.currentTime;
+    if (now - this.lastWolfChompTime < 0.16) return;
+    this.lastWolfChompTime = now;
+
+    const pitchMod = 0.90 + Math.random() * 0.20;
+    const startTime = now;
+    const duration = 0.11;
+
+    // Meat bite body
+    const osc = this.ctx.createOscillator();
+    const oscGain = this.ctx.createGain();
+    osc.type = 'sawtooth';
+    osc.frequency.setValueAtTime(230 * pitchMod, startTime);
+    osc.frequency.exponentialRampToValueAtTime(60 * pitchMod, startTime + duration);
+
+    // Softened body volume
+    oscGain.gain.setValueAtTime(0.12, startTime);
+    oscGain.gain.exponentialRampToValueAtTime(0.001, startTime + duration);
+
+    const filter = this.ctx.createBiquadFilter();
+    filter.type = 'lowpass';
+    filter.frequency.setValueAtTime(650, startTime);
+    filter.frequency.exponentialRampToValueAtTime(160, startTime + duration);
+
+    osc.connect(filter);
+    filter.connect(oscGain);
+    oscGain.connect(this.sfxGain);
+
+    osc.start(startTime);
+    osc.stop(startTime + duration + 0.01);
+
+    // Soft teeth crunch snap
+    this._synthNoiseSnap(startTime, 0.04, 0.065);
+  }
+
+  _synthNoiseSnap(startTime, duration, volume) {
+    const bufferSize = Math.floor(this.ctx.sampleRate * duration);
+    const buffer = this.ctx.createBuffer(1, bufferSize, this.ctx.sampleRate);
+    const output = buffer.getChannelData(0);
+    for (let i = 0; i < bufferSize; i++) {
+      output[i] = (Math.random() * 2 - 1) * Math.exp(-i / (bufferSize * 0.35));
+    }
+
+    const whiteNoise = this.ctx.createBufferSource();
+    whiteNoise.buffer = buffer;
+
+    const filter = this.ctx.createBiquadFilter();
+    filter.type = 'highpass';
+    filter.frequency.setValueAtTime(1000, startTime);
+
+    const gain = this.ctx.createGain();
+    gain.gain.setValueAtTime(volume, startTime);
+    gain.gain.exponentialRampToValueAtTime(0.001, startTime + duration);
+
+    whiteNoise.connect(filter);
+    filter.connect(gain);
+    gain.connect(this.sfxGain);
+
+    whiteNoise.start(startTime);
+    whiteNoise.stop(startTime + duration + 0.01);
+  }
+
+  /**
+   * Mating Heart Chime
+   */
+  playHeartChime() {
+    if (this.isMuted) return;
+    this.ensureContext();
+    if (!this.ctx || this.ctx.state !== 'running') return;
+
+    const now = this.ctx.currentTime;
+    const playNote = (time, freq) => {
+      const osc = this.ctx.createOscillator();
+      const gain = this.ctx.createGain();
+      osc.type = 'sine';
+      osc.frequency.setValueAtTime(freq, time);
+
+      gain.gain.setValueAtTime(0.08, time);
+      gain.gain.exponentialRampToValueAtTime(0.001, time + 0.14);
+
+      osc.connect(gain);
+      gain.connect(this.sfxGain);
+
+      osc.start(time);
+      osc.stop(time + 0.15);
+    };
+
+    playNote(now, 523.25);        // C5
+    playNote(now + 0.07, 783.99); // G5
+  }
+
+  /**
+   * Rain Cloud Plant Sprout Bloop
+   */
+  playSproutChime() {
+    if (this.isMuted) return;
+    this.ensureContext();
+    if (!this.ctx || this.ctx.state !== 'running') return;
+
+    const now = this.ctx.currentTime;
+    if (now - this.lastSproutTime < 0.25) return;
+    this.lastSproutTime = now;
+
+    const osc = this.ctx.createOscillator();
+    const gain = this.ctx.createGain();
+
+    osc.type = 'sine';
+    osc.frequency.setValueAtTime(320, now);
+    osc.frequency.exponentialRampToValueAtTime(640, now + 0.1);
+
+    gain.gain.setValueAtTime(0.07, now);
+    gain.gain.exponentialRampToValueAtTime(0.001, now + 0.12);
+
+    osc.connect(gain);
+    gain.connect(this.sfxGain);
+
+    osc.start(now);
+    osc.stop(now + 0.13);
+  }
+}
diff --git a/js/entities/sheep.js b/js/entities/sheep.js
index c3249f8..1ace4ef 100644
--- a/js/entities/sheep.js
+++ b/js/entities/sheep.js
@@ -12,7 +12,7 @@ export class Sheep extends Animal {
     this.grazingTimer = 0;
   }
 
-  update(dt, worldWidth, worldHeight, config, plants, wolves, allSheep, particleSystem, onBabyBorn, terrain = null) {
+  update(dt, worldWidth, worldHeight, config, plants, wolves, allSheep, particleSystem, onBabyBorn, terrain = null, audio = null) {
     if (this.isDead) return;
 
     // Deplete hunger over time using config
@@ -89,6 +89,9 @@ export class Sheep extends Animal {
             particleSystem.emitHeart(this.x, this.y);
             particleSystem.emitHeart(nearestMate.x, nearestMate.y);
           }
+          if (audio) {
+            audio.playHeartChime();
+          }
 
           if (onBabyBorn) {
             const babyX = (this.x + nearestMate.x) / 2 + (Math.random() - 0.5) * 12;
@@ -131,6 +134,11 @@ export class Sheep extends Animal {
           bestPlant.takeBite(); // removes the node immediately
           this.recordMeal(nutrition, particleSystem);
 
+          // Play synthesized retro MIDI chomp sound!
+          if (audio) {
+            audio.playSheepChomp();
+          }
+
           if (terrain) {
             terrain.absorbDecalsNear(bestPlant.x, bestPlant.y, 25);
           }
diff --git a/js/entities/wolf.js b/js/entities/wolf.js
index c1b5390..0da8310 100644
--- a/js/entities/wolf.js
+++ b/js/entities/wolf.js
@@ -16,7 +16,7 @@ export class Wolf extends Animal {
     return !this.isBaby && this.hunger >= threshold && this.mateCooldown <= 0;
   }
 
-  update(dt, worldWidth, worldHeight, config, sheepList, allWolves, terrain, particleSystem, onBabyBorn, onSheepKilled) {
+  update(dt, worldWidth, worldHeight, config, sheepList, allWolves, terrain, particleSystem, onBabyBorn, onSheepKilled, audio = null) {
     if (this.isDead) return;
 
     // Deplete hunger over time (gentler for growing pups)
@@ -80,6 +80,9 @@ export class Wolf extends Animal {
             particleSystem.emitHeart(this.x, this.y);
             particleSystem.emitHeart(nearestMate.x, nearestMate.y);
           }
+          if (audio) {
+            audio.playHeartChime();
+          }
 
           if (onBabyBorn) {
             const babyX = (this.x + nearestMate.x) / 2 + (Math.random() - 0.5) * 12;
@@ -113,6 +116,9 @@ export class Wolf extends Animal {
           if (minCarcassDist <= 24) {
             // Feast on carcass
             this.recordMeal(35, particleSystem);
+            if (audio) {
+              audio.playWolfChomp();
+            }
             nearestCarcass.decayProgress = Math.min(1.0, nearestCarcass.decayProgress + 0.18);
             if (particleSystem) {
               particleSystem.emitEatingCrumbs(nearestCarcass.x, nearestCarcass.y, '#8A1010', 4);
@@ -177,6 +183,11 @@ export class Wolf extends Animal {
             const biteAngle = Math.atan2(targetSheep.y - this.y, targetSheep.x - this.x);
             const sheepDied = targetSheep.takeDamage(biteDamage, biteAngle, particleSystem);
 
+            // Play synthesized arcade wolf chomp / crunch!
+            if (audio) {
+              audio.playWolfChomp();
+            }
+
             // Stamp blood on the ground where attack occurred
             if (terrain) {
               terrain.addBloodSplotch(targetSheep.x, targetSheep.y, 4 + Math.random() * 3);
diff --git a/js/simulation.js b/js/simulation.js
index f7964dc..9aabce4 100644
--- a/js/simulation.js
+++ b/js/simulation.js
@@ -11,6 +11,7 @@ import { TerrainManager } from './terrain.js';
 import { WeatherManager } from './weather.js';
 import { ParticleSystem } from './particles.js';
 import { SimStats } from './state.js';
+import { SoundManager } from './audio.js';
 
 export class Simulation {
   constructor(canvas, config) {
@@ -29,6 +30,7 @@ export class Simulation {
     this.weather = new WeatherManager(this.width, this.height);
     this.particles = new ParticleSystem();
     this.stats = new SimStats();
+    this.audio = new SoundManager();
 
     // Entity lists
     this.sheep = [];
@@ -133,8 +135,17 @@ export class Simulation {
     if (newConfig) {
       this.config = { ...this.config, ...newConfig };
     }
+    if (this.weather) {
+      this.weather.reset();
+    }
     this.init();
     this.isRunning = true;
+    if (this.audio) {
+      this.audio.ensureContext();
+      if (this.audio.musicEnabled) {
+        this.audio.startMusic();
+      }
+    }
   }
 
   resize(newWidth, newHeight) {
@@ -263,9 +274,34 @@ export class Simulation {
 
     // Cap delta time to prevent physics explosions on background tab
     const dt = Math.min(0.1, rawDt) * this.speedMultiplier;
+    const maxPlantCap = this.config.maxPlantCap || 90;
 
-    // 1. Weather Update (applies rain to revitalize plants)
-    this.weather.update(dt, this.config.rainFrequency, this.plants, this.particles);
+    // 1. Weather Update & Cloud Rain Germination
+    // Rain comes directly out of floating clouds, soaking the ground and sprouting plants in its wake!
+    this.weather.update(
+      dt,
+      this.config.rainFrequency,
+      this.plants,
+      this.particles,
+      (wakeX, wakeY) => {
+        // Sprout new flora behind the raining cloud on freshly wet ground!
+        if (this.plants.length < maxPlantCap) {
+          const loc = this.findClearPlantLocation(wakeX, wakeY, 24, 75);
+          if (loc) {
+            const isNearDecal = this.terrain.decals.some(d => Math.hypot(d.x - loc.x, d.y - loc.y) < 36);
+            const isFlower = isNearDecal || Math.random() < 0.35;
+            const plant = new Plant(loc.x, loc.y, isFlower ? 'flower' : 'grass', 0.3, this.width, this.height);
+            this.plants.push(plant);
+            this.terrain.absorbDecalsNear(loc.x, loc.y, 30);
+            this.particles.emitGrowthSparkles(loc.x, loc.y, 8);
+            this.stats.recordPlantSpawn(isFlower, false);
+            if (this.audio) {
+              this.audio.playSproutChime();
+            }
+          }
+        }
+      }
+    );
 
     // 1b. Continuous Mode Migration Waves (Screen Saver / Endless Ecosystem)
     if (this.config.continuousMode) {
@@ -296,8 +332,6 @@ export class Simulation {
     }
 
     // 2. Terrain & Carcass Decomposition Update
-    const maxPlantCap = this.config.maxPlantCap || 90;
-
     this.terrain.update(
       dt,
       this.config.decaySpeed,
@@ -371,26 +405,10 @@ export class Simulation {
       }
     }
 
-    // 3b. Meadow Rejuvenation & Rain Germination
-    // Prevents desolate wasteland: Rain rolls in and germinates fresh grass seedlings in open soil
-    if (this.weather.rainIntensity > 0.25) {
-      this.rainSproutTimer = (this.rainSproutTimer || 0) + dt;
-      if (this.rainSproutTimer >= 1.3 && this.plants.length < maxPlantCap) {
-        this.rainSproutTimer = 0;
-        const rx = 35 + Math.random() * (this.width - 70);
-        const ry = 35 + Math.random() * (this.height - 70);
-        const loc = this.findClearPlantLocation(rx, ry, 24, 80);
-        if (loc) {
-          const freshGrass = new Plant(loc.x, loc.y, 'grass', 0.35, this.width, this.height);
-          this.plants.push(freshGrass);
-          this.terrain.absorbDecalsNear(loc.x, loc.y, 25);
-          this.stats.recordPlantSpawn(false, false);
-        }
-      }
-    } else if (this.plants.length < 16) {
-      // Gentle meadow baseline so sheep always have a living ecosystem
+    // 3b. Gentle meadow baseline (only if critically low plant count)
+    if (this.plants.length < 12) {
       this.soilSproutTimer = (this.soilSproutTimer || 0) + dt;
-      if (this.soilSproutTimer >= 3.8 && this.plants.length < maxPlantCap) {
+      if (this.soilSproutTimer >= 3.5 && this.plants.length < maxPlantCap) {
         this.soilSproutTimer = 0;
         const rx = 40 + Math.random() * (this.width - 80);
         const ry = 40 + Math.random() * (this.height - 80);
@@ -420,7 +438,8 @@ export class Simulation {
           this.sheep.push(babySheep);
           this.stats.recordSheepBirth(false);
         },
-        this.terrain
+        this.terrain,
+        this.audio
       );
 
       if (s.isDead) {
@@ -450,7 +469,8 @@ export class Simulation {
         },
         (killedSheep, killerWolf) => {
           // Handled via sheep.isDead and sheep.takeDamage
-        }
+        },
+        this.audio
       );
 
       if (w.isDead) {
@@ -585,6 +605,9 @@ export class Simulation {
     // 1. Draw Terrain, Soil Decals & Carcasses
     this.terrain.draw(ctx);
 
+    // 1b. Draw Localized Wet Ground Trails (soaking meadow under and behind clouds)
+    this.weather.drawWetGround(ctx);
+
     // 2. Draw Plants & Flowers
     for (let i = 0; i < this.plants.length; i++) {
       this.plants[i].draw(ctx, this.stats.elapsedSimTime);
diff --git a/js/ui.js b/js/ui.js
index 3f2be61..4f4088b 100644
--- a/js/ui.js
+++ b/js/ui.js
@@ -12,12 +12,19 @@ export class UIManager {
     this.cacheDOMElements();
     this.bindEvents();
     this.syncSlidersFromConfig();
+    this.updateAudioButtons();
   }
 
   cacheDOMElements() {
     // Primary Controls
     this.btnPlayPause = document.getElementById('btnPlayPause');
     this.btnRestart = document.getElementById('btnRestart');
+    this.btnSound = document.getElementById('btnSound');
+    this.soundIcon = document.getElementById('soundIcon');
+    this.soundText = document.getElementById('soundText');
+    this.btnMusic = document.getElementById('btnMusic');
+    this.musicIcon = document.getElementById('musicIcon');
+    this.musicText = document.getElementById('musicText');
     this.btnFullscreen = document.getElementById('btnFullscreen');
     this.btnExitFullscreen = document.getElementById('btnExitFullscreen');
     this.btnSetDefaults = document.getElementById('btnSetDefaults');
@@ -141,9 +148,29 @@ export class UIManager {
   }
 
   bindEvents() {
+    // Audio gesture unlock for browser autoplay compliance
+    const resumeAudioOnGesture = () => {
+      if (this.sim && this.sim.audio) {
+        this.sim.audio.ensureContext();
+        if (this.sim.isRunning && this.sim.audio.musicEnabled && !this.sim.audio.isMusicPlaying) {
+          this.sim.audio.startMusic();
+        }
+      }
+    };
+    window.addEventListener('pointerdown', resumeAudioOnGesture, { once: true });
+    window.addEventListener('keydown', resumeAudioOnGesture, { once: true });
+
     // 1. Play / Pause
     this.btnPlayPause.addEventListener('click', () => {
+      if (this.sim.audio) {
+        this.sim.audio.ensureContext();
+      }
       this.sim.isRunning = !this.sim.isRunning;
+      if (this.sim.isRunning && this.sim.audio && this.sim.audio.musicEnabled) {
+        this.sim.audio.startMusic();
+      } else if (!this.sim.isRunning && this.sim.audio) {
+        this.sim.audio.stopMusic();
+      }
       this.updatePlayPauseButton();
     });
 
@@ -155,6 +182,24 @@ export class UIManager {
       this.updatePlayPauseButton();
     });
 
+    // 2b. Sound Effects Toggle (Midi Chomps, Bites, Chimes)
+    if (this.btnSound) {
+      this.btnSound.addEventListener('click', () => {
+        const isMuted = this.sim.audio.toggleMute();
+        this.updateAudioButtons();
+        this.showToast(isMuted ? '🔇 Sound FX Muted' : '🔊 Sound FX Enabled');
+      });
+    }
+
+    // 2c. Elevator Music BGM Toggle
+    if (this.btnMusic) {
+      this.btnMusic.addEventListener('click', () => {
+        const isMusicOn = this.sim.audio.toggleMusic();
+        this.updateAudioButtons();
+        this.showToast(isMusicOn ? '🎵 Elevator Music Playing' : '🎶 Elevator Music Paused');
+      });
+    }
+
     // 3. Save current settings as custom defaults
     if (this.btnSetDefaults) {
       this.btnSetDefaults.addEventListener('click', () => {
@@ -308,6 +353,24 @@ export class UIManager {
     }
   }
 
+  updateAudioButtons() {
+    if (this.sim && this.sim.audio) {
+      const isMuted = this.sim.audio.isMuted;
+      if (this.soundIcon) this.soundIcon.textContent = isMuted ? '🔇' : '🔊';
+      if (this.soundText) this.soundText.textContent = isMuted ? 'Muted' : 'Sound';
+      if (this.btnSound) {
+        this.btnSound.classList.toggle('btn-muted', isMuted);
+      }
+
+      const isMusic = this.sim.audio.musicEnabled;
+      if (this.musicIcon) this.musicIcon.textContent = isMusic ? '🎵' : '🎶';
+      if (this.musicText) this.musicText.textContent = isMusic ? 'Music' : 'Music Off';
+      if (this.btnMusic) {
+        this.btnMusic.classList.toggle('btn-muted', !isMusic);
+      }
+    }
+  }
+
   enterFullscreen() {
     this.isFullscreen = true;
     const appLayout = document.querySelector('.app-layout');
diff --git a/js/weather.js b/js/weather.js
index fe6b0e1..f0f94a0 100644
--- a/js/weather.js
+++ b/js/weather.js
@@ -1,11 +1,15 @@
 /**
- * Weather & Rain Simulation System
- * Features procedural multi-lobed organic clouds with 3D volume shading,
- * realistic drifting ground shadows, weather cycles, raindrops, and plant hydration.
+ * Weather, Cloud Rain & Localized Meadow Wetness System
+ * Features:
+ * 1. Procedural multi-lobed organic clouds with volumetric 3D shading.
+ * 2. Rain curtains that fall directly OUT OF drifting clouds instead of uniformly across the whole screen.
+ * 3. Localized ground wetness: soaked meadow trails behind raining clouds.
+ * 4. Flora germination in the wet wake of clouds: sprouts grass and flowers in freshly watered soil.
+ * 5. Hydration of existing plants as rain clouds drift overhead.
  */
 
 const CLOUD_PRESETS = [
-  // Preset 0: Majestic Cumulus (Tall center dome with billowing shoulders, flanking wisps, and flat base)
+  // Preset 0: Majestic Cumulus
   {
     lobes: [
       { x: 0, y: -26, r: 50 },     // Central peak
@@ -24,7 +28,7 @@ const CLOUD_PRESETS = [
     width: 250,
     height: 105
   },
-  // Preset 1: Wide Billowing Cloud Bank (Broad rolling billows with undulating tops)
+  // Preset 1: Wide Billowing Cloud Bank
   {
     lobes: [
       { x: -38, y: -28, r: 48 },
@@ -43,7 +47,7 @@ const CLOUD_PRESETS = [
     width: 320,
     height: 115
   },
-  // Preset 2: Compact Fluffy Cotton Puff (Cute rounded cloud with soft bubbling lobes)
+  // Preset 2: Compact Fluffy Cotton Puff
   {
     lobes: [
       { x: 0, y: -20, r: 42 },
@@ -60,7 +64,7 @@ const CLOUD_PRESETS = [
     width: 175,
     height: 85
   },
-  // Preset 3: Drifting Stratocumulus (Elongated windswept cloud bank)
+  // Preset 3: Drifting Stratocumulus
   {
     lobes: [
       { x: -55, y: -18, r: 40 },
@@ -86,33 +90,29 @@ export class WeatherManager {
     this.width = width;
     this.height = height;
 
-    this.state = 'sunny'; // 'sunny', 'cloudy', 'raining', 'clearing'
-    this.timer = 15;      // seconds until next weather transition
-    this.rainIntensity = 0; // 0.0 to 1.0 (smooth fade in/out)
+    this.state = 'sunny';     // 'sunny', 'cloudy', 'raining', 'clearing'
+    this.timer = 15;          // seconds until next weather transition
+    this.rainIntensity = 0;   // 0.0 to 1.0 (smooth fade in/out)
     this.cloudDensity = 0.35; // 0.2 (clear day) to 1.0 (overcast storm)
 
-    // Procedural cloud entities
+    // Procedural cloud entities with dedicated rain particle pools
     this.clouds = [];
     this.initClouds();
 
-    // Raindrop particles
-    this.raindrops = [];
-    this.maxDrops = 280;
-    this.initRaindrops();
+    // Persistent wet ground trail zones
+    this.wetZones = [];
   }
 
   initClouds() {
     this.clouds = [];
-    // Number of clouds scales naturally with meadow width
     const count = Math.max(5, Math.ceil(this.width / 220));
 
     for (let i = 0; i < count; i++) {
       const preset = CLOUD_PRESETS[i % CLOUD_PRESETS.length];
       const scale = 0.8 + Math.random() * 0.45;
       const speed = 14 + Math.random() * 16;
-      // Stagger across the entire width plus extra margin
-      const x = -100 + (i / count) * (this.width + 300);
-      const y = 30 + Math.random() * (this.height * 0.65);
+      const x = -120 + (i / count) * (this.width + 350);
+      const y = 25 + Math.random() * (this.height * 0.6);
 
       this.clouds.push({
         x,
@@ -123,23 +123,12 @@ export class WeatherManager {
         lobes: preset.lobes,
         width: preset.width * scale,
         height: preset.height * scale,
-        shadowOffsetY: 90 + Math.random() * 60,
-        swayOffset: Math.random() * Math.PI * 2
-      });
-    }
-  }
-
-  initRaindrops() {
-    this.raindrops = [];
-    const count = Math.max(220, Math.floor((this.width * this.height) / 3200));
-    this.maxDrops = count;
-
-    for (let i = 0; i < count; i++) {
-      this.raindrops.push({
-        x: Math.random() * (this.width + 160),
-        y: Math.random() * this.height,
-        speed: 420 + Math.random() * 300,
-        length: 8 + Math.random() * 9,
+        shadowOffsetY: 85 + Math.random() * 55,
+        swayOffset: Math.random() * Math.PI * 2,
+        isRaining: false,
+        raindrops: [],
+        sproutTimer: Math.random() * 1.5,
+        wetStampTimer: 0,
       });
     }
   }
@@ -149,16 +138,13 @@ export class WeatherManager {
     this.width = newWidth;
     this.height = newHeight;
 
-    this.initRaindrops();
-
-    // Ensure clouds span the new meadow width
     if (this.clouds.length < Math.ceil(newWidth / 220)) {
       this.initClouds();
     } else {
       for (let i = 0; i < this.clouds.length; i++) {
         const c = this.clouds[i];
-        if (c.y > newHeight * 0.75) {
-          c.y = 30 + Math.random() * (newHeight * 0.65);
+        if (c.y > newHeight * 0.7) {
+          c.y = 25 + Math.random() * (newHeight * 0.6);
         }
       }
     }
@@ -169,25 +155,28 @@ export class WeatherManager {
     this.timer = 15;
     this.rainIntensity = 0;
     this.cloudDensity = 0.35;
+    this.wetZones = [];
+    for (let i = 0; i < this.clouds.length; i++) {
+      this.clouds[i].raindrops = [];
+      this.clouds[i].isRaining = false;
+    }
   }
 
   forceRain() {
     this.state = 'raining';
-    this.timer = 15;
+    this.timer = 20;
     this.rainIntensity = 1.0;
     this.cloudDensity = 1.0;
   }
 
-  update(dt, rainSliderValue, plants, particleSystem) {
-    // rainSliderValue is 0 - 100
-    // Higher slider = shorter sunny periods, longer rain duration
+  update(dt, rainSliderValue, plants, particleSystem, onWetSprout = null) {
     const sliderNorm = Math.max(0.05, rainSliderValue / 100);
-    const sunnyDuration = (1 - sliderNorm) * 35 + 8; // e.g. 10 to 43 sec
-    const rainDuration = sliderNorm * 18 + 7;         // e.g. 8 to 25 sec
+    const sunnyDuration = (1 - sliderNorm) * 35 + 8;
+    const rainDuration = sliderNorm * 20 + 8;
 
     this.timer -= dt;
 
-    // Weather state machine
+    // Weather transition state machine
     if (this.timer <= 0) {
       switch (this.state) {
         case 'sunny':
@@ -214,7 +203,7 @@ export class WeatherManager {
       this.rainIntensity = Math.min(1.0, this.rainIntensity + dt * 0.75);
       this.cloudDensity = Math.min(1.0, this.cloudDensity + dt * 0.6);
     } else if (this.state === 'cloudy') {
-      this.rainIntensity = Math.min(0.25, this.rainIntensity + dt * 0.35);
+      this.rainIntensity = Math.min(0.2, this.rainIntensity + dt * 0.35);
       this.cloudDensity = Math.min(0.85, this.cloudDensity + dt * 0.5);
     } else if (this.state === 'clearing') {
       this.rainIntensity = Math.max(0.0, this.rainIntensity - dt * 0.45);
@@ -225,63 +214,150 @@ export class WeatherManager {
       this.cloudDensity = Math.max(0.35, this.cloudDensity - dt * 0.2);
     }
 
-    // When raining, revitalize all plants!
-    if (this.rainIntensity > 0.1 && plants && plants.length > 0) {
-      const hydrationRate = 22 * this.rainIntensity; // moisture per second
-      for (let i = 0; i < plants.length; i++) {
-        plants[i].receiveRain(hydrationRate * dt);
+    // Update persistent wet ground zones
+    for (let i = this.wetZones.length - 1; i >= 0; i--) {
+      const zone = this.wetZones[i];
+      zone.life -= dt;
+      zone.alpha = Math.max(0, (zone.life / zone.maxLife) * 0.35);
+      if (zone.life <= 0) {
+        this.wetZones.splice(i, 1);
       }
     }
 
-    // Animate procedural clouds drifting across the sky
+    // Drift clouds across the sky & emit localized rain
     const windSpeedMult = 1.0 + this.rainIntensity * 0.75;
+    const isCloudRainActive = this.rainIntensity > 0.05;
+
     for (let i = 0; i < this.clouds.length; i++) {
       const cloud = this.clouds[i];
       cloud.x += cloud.speed * windSpeedMult * dt;
 
-      // Wrap around cleanly when fully offscreen to the right
+      // Wrap around when fully past screen right edge
       if (cloud.x - cloud.width * 0.6 > this.width + 120) {
-        cloud.x = -cloud.width * 0.6 - 60;
-        cloud.y = 25 + Math.random() * (this.height * 0.65);
+        cloud.x = -cloud.width * 0.6 - 80;
+        cloud.y = 25 + Math.random() * (this.height * 0.6);
         cloud.scale = 0.8 + Math.random() * 0.45;
         cloud.speed = 14 + Math.random() * 16;
+        cloud.raindrops = [];
       }
-    }
 
-    // Animate raindrops
-    if (this.rainIntensity > 0.05) {
-      const activeDrops = Math.floor(this.maxDrops * this.rainIntensity);
-      for (let i = 0; i < activeDrops; i++) {
-        const drop = this.raindrops[i];
-        drop.x -= dt * 65; // realistic wind angle
-        drop.y += drop.speed * dt;
+      // Determine if this cloud is raining:
+      // Active during rain periods, especially for clouds with dark underbellies
+      cloud.isRaining = isCloudRainActive && (i % 2 === 0 || this.rainIntensity > 0.45);
 
-        if (drop.y > this.height) {
-          drop.y = -drop.length;
-          drop.x = Math.random() * (this.width + 160);
+      // Rain emission directly beneath cloud
+      if (cloud.isRaining) {
+        // Spawn fresh drops from cloud underside
+        const dropsToSpawn = Math.round(this.rainIntensity * (cloud.width / 50) * (dt * 60));
+        const maxCloudDrops = 75;
 
-          // Ground splash ripple on impact
-          if (particleSystem && Math.random() < 0.2) {
-            particleSystem.emitSplash(drop.x, this.height - Math.random() * 30);
+        for (let d = 0; d < dropsToSpawn && cloud.raindrops.length < maxCloudDrops; d++) {
+          const spawnOffset = (Math.random() - 0.5) * (cloud.width * 0.72);
+          cloud.raindrops.push({
+            x: cloud.x + spawnOffset,
+            y: cloud.y + (cloud.height * 0.22) + Math.random() * 12,
+            speed: 460 + Math.random() * 120,
+            length: 8 + Math.random() * 9,
+            groundY: Math.min(this.height, cloud.y + cloud.shadowOffsetY + 60 + Math.random() * (this.height - cloud.y - 70))
+          });
+        }
+
+        // Leave wet ground trail directly under and behind the cloud's path
+        cloud.wetStampTimer = (cloud.wetStampTimer || 0) + dt;
+        if (cloud.wetStampTimer >= 0.18) {
+          cloud.wetStampTimer = 0;
+          const groundY = Math.min(this.height - 25, cloud.y + cloud.shadowOffsetY + (Math.random() - 0.5) * 50);
+          this.addWetZone(cloud.x - 15, groundY, cloud.width * 0.35);
+        }
+
+        // Hydrate existing plants located directly under this cloud's rain curtain
+        if (plants && plants.length > 0) {
+          const hydrationRate = 45 * this.rainIntensity;
+          for (let p = 0; p < plants.length; p++) {
+            const plant = plants[p];
+            if (plant.isDead) continue;
+            // Check if plant is within rain shaft below cloud
+            const dx = Math.abs(plant.x - cloud.x);
+            if (dx < cloud.width * 0.52 && plant.y >= cloud.y + 20) {
+              plant.receiveRain(hydrationRate * dt);
+            }
+          }
+        }
+
+        // Sprout new flora behind the cloud in its freshly wet trailing wake!
+        cloud.sproutTimer = (cloud.sproutTimer || 0) + dt;
+        if (cloud.sproutTimer >= 1.25 && onWetSprout) {
+          cloud.sproutTimer = (Math.random() - 0.5) * 0.4; // Jitter timer
+          // Sprout location in the moist wake just behind the cloud
+          const wakeX = cloud.x - (cloud.width * 0.45) - Math.random() * 50;
+          const wakeY = cloud.y + 40 + Math.random() * (this.height - cloud.y - 70);
+
+          if (wakeX >= 25 && wakeX <= this.width - 25 && wakeY >= 25 && wakeY <= this.height - 25) {
+            onWetSprout(wakeX, wakeY);
           }
         }
       }
+
+      // Animate this cloud's falling raindrops
+      for (let r = cloud.raindrops.length - 1; r >= 0; r--) {
+        const drop = cloud.raindrops[r];
+        drop.x -= dt * 65; // Wind angle
+        drop.y += drop.speed * dt;
+
+        if (drop.y >= drop.groundY) {
+          // Impact splash ripple on ground
+          if (particleSystem && Math.random() < 0.25) {
+            particleSystem.emitSplash(drop.x, drop.groundY);
+          }
+          cloud.raindrops.splice(r, 1);
+        }
+      }
     }
   }
 
+  addWetZone(x, y, radius = 35) {
+    // Keep wet zones bounded
+    if (this.wetZones.length > 60) {
+      this.wetZones.shift();
+    }
+    this.wetZones.push({
+      x,
+      y,
+      radius: Math.max(22, radius),
+      maxLife: 16,
+      life: 16,
+      alpha: 0.35
+    });
+  }
+
+  drawWetGround(ctx) {
+    if (this.wetZones.length === 0) return;
+
+    ctx.save();
+    for (let i = 0; i < this.wetZones.length; i++) {
+      const wz = this.wetZones[i];
+      if (wz.alpha <= 0.01) continue;
+
+      // Dark lush damp grass oval
+      ctx.beginPath();
+      ctx.ellipse(wz.x, wz.y, wz.radius, wz.radius * 0.55, 0, 0, Math.PI * 2);
+      ctx.fillStyle = `rgba(18, 48, 16, ${wz.alpha})`;
+      ctx.fill();
+    }
+    ctx.restore();
+  }
+
   draw(ctx) {
     ctx.save();
 
     // ==============================================================
-    // 1. ORGANIC CLOUD SHADOWS CAST ONTO THE MEADOW GROUND
-    // Realistic multi-lobed cloud silhouettes drifting over the grass
+    // 1. ORGANIC CLOUD GROUND SHADOWS
     // ==============================================================
     const shadowAlpha = 0.07 + this.cloudDensity * 0.16 + this.rainIntensity * 0.12;
     ctx.fillStyle = `rgba(10, 26, 14, ${shadowAlpha})`;
 
     for (let i = 0; i < this.clouds.length; i++) {
       const cloud = this.clouds[i];
-      // Ground shadow projection: offset down-right from light source with subtle vertical perspective squash
       const sx = cloud.x + 35;
       const sy = Math.min(this.height - 15, cloud.y + cloud.shadowOffsetY);
 
@@ -289,7 +365,7 @@ export class WeatherManager {
       for (let j = 0; j < cloud.lobes.length; j++) {
         const lobe = cloud.lobes[j];
         const lx = sx + lobe.x * cloud.scale;
-        const ly = sy + lobe.y * cloud.scale * 0.72; // perspective ground squash
+        const ly = sy + lobe.y * cloud.scale * 0.72;
         const lr = lobe.r * cloud.scale;
         ctx.moveTo(lx + lr, ly);
         ctx.arc(lx, ly, lr, 0, Math.PI * 2);
@@ -298,7 +374,7 @@ export class WeatherManager {
     }
 
     // ==============================================================
-    // 2. ATMOSPHERIC AMBIENT TINT (Darkening when overcast or stormy)
+    // 2. ATMOSPHERIC AMBIENT TINT
     // ==============================================================
     if (this.rainIntensity > 0.02 || this.cloudDensity > 0.5) {
       const darkFactor = this.rainIntensity * 0.32 + Math.max(0, this.cloudDensity - 0.5) * 0.15;
@@ -307,34 +383,33 @@ export class WeatherManager {
     }
 
     // ==============================================================
-    // 3. DRIFTING OVERHEAD CLOUDS (SKY ATMOSPHERE LAYER)
-    // Fluffy cumulus with 3D volumetric shading & highlighted rims
+    // 3. DRIFTING OVERHEAD CLOUDS (3D VOLUMETRIC SKY LAYER)
     // ==============================================================
     const cloudAlpha = 0.28 + this.cloudDensity * 0.55 + this.rainIntensity * 0.15;
-    const isStormy = this.rainIntensity > 0.35;
 
     for (let i = 0; i < this.clouds.length; i++) {
       const cloud = this.clouds[i];
+      const isStormy = cloud.isRaining || (this.rainIntensity > 0.35);
 
-      // A. Darker Underbelly / Base Shading (Gives the cloud volumetric depth)
+      // A. Darker Underbelly / Base Shading
       ctx.fillStyle = isStormy
-        ? `rgba(65, 78, 92, ${cloudAlpha * 0.85})`
+        ? `rgba(62, 75, 88, ${cloudAlpha * 0.92})`
         : `rgba(175, 190, 205, ${cloudAlpha * 0.55})`;
 
       ctx.beginPath();
       for (let j = 0; j < cloud.lobes.length; j++) {
         const lobe = cloud.lobes[j];
         const lx = cloud.x + lobe.x * cloud.scale;
-        const ly = cloud.y + (lobe.y + 5) * cloud.scale; // subtle downward shadow offset
+        const ly = cloud.y + (lobe.y + 6) * cloud.scale;
         const lr = lobe.r * cloud.scale;
         ctx.moveTo(lx + lr, ly);
         ctx.arc(lx, ly, lr, 0, Math.PI * 2);
       }
       ctx.fill();
 
-      // B. Main Puffy Cloud Body (Soft billowing white / slate-grey storm)
+      // B. Main Puffy Cloud Body
       ctx.fillStyle = isStormy
-        ? `rgba(115, 130, 146, ${cloudAlpha * 0.95})`
+        ? `rgba(110, 126, 142, ${cloudAlpha * 0.96})`
         : `rgba(244, 248, 253, ${cloudAlpha * 0.88})`;
 
       ctx.beginPath();
@@ -356,7 +431,7 @@ export class WeatherManager {
       ctx.beginPath();
       for (let j = 0; j < cloud.lobes.length; j++) {
         const lobe = cloud.lobes[j];
-        if (lobe.y < 0) { // Crown of the cloud receives direct sunlight
+        if (lobe.y < 0) {
           const lx = cloud.x + lobe.x * cloud.scale;
           const ly = cloud.y + (lobe.y - 3) * cloud.scale;
           const lr = Math.max(2, (lobe.r - 4) * cloud.scale);
@@ -365,28 +440,29 @@ export class WeatherManager {
         }
       }
       ctx.fill();
-    }
 
-    // ==============================================================
-    // 4. DIAGONAL TRANSLUCENT RAINDROPS
-    // ==============================================================
-    if (this.rainIntensity > 0.05) {
-      ctx.strokeStyle = `rgba(175, 215, 255, ${0.65 * this.rainIntensity})`;
-      ctx.lineWidth = 1.5;
-      ctx.beginPath();
+      // ==============================================================
+      // 4. CLOUD RAIN CURTAINS (Falling directly underneath this cloud!)
+      // ==============================================================
+      if (cloud.raindrops.length > 0) {
+        ctx.save();
+        ctx.strokeStyle = `rgba(180, 220, 255, ${0.72 * this.rainIntensity})`;
+        ctx.lineWidth = 1.5;
+        ctx.beginPath();
 
-      const activeDrops = Math.floor(this.maxDrops * this.rainIntensity);
-      for (let i = 0; i < activeDrops; i++) {
-        const drop = this.raindrops[i];
-        const startX = drop.x;
-        const startY = drop.y;
-        const endX = startX - drop.length * 0.28;
-        const endY = startY + drop.length;
+        for (let r = 0; r < cloud.raindrops.length; r++) {
+          const drop = cloud.raindrops[r];
+          const startX = drop.x;
+          const startY = drop.y;
+          const endX = startX - drop.length * 0.28;
+          const endY = startY + drop.length;
 
-        ctx.moveTo(startX, startY);
-        ctx.lineTo(endX, endY);
+          ctx.moveTo(startX, startY);
+          ctx.lineTo(endX, endY);
+        }
+        ctx.stroke();
+        ctx.restore();
       }
-      ctx.stroke();
     }
 
     ctx.restore();