Add shuffle, pipes engines; lots of polish

src/src/components/animation-switcher/index.tsx

@@ -8,17 +8,17 @@ import { ANIMATION_LABELS } from "@/lib/animations";
 
 export default function AnimationSwitcher() {
   const [hovering, setHovering] = useState(false);
-  const [nextLabel, setNextLabel] = useState("");
+  const [currentLabel, setCurrentLabel] = useState("");
   const committedRef = useRef("");
 
   useEffect(() => {
     committedRef.current = getStoredAnimationId();
-    setNextLabel(ANIMATION_LABELS[getNextAnimation(committedRef.current)]);
+    setCurrentLabel(ANIMATION_LABELS[committedRef.current]);
 
     const handleSwap = () => {
       const id = getStoredAnimationId();
       committedRef.current = id;
-      setNextLabel(ANIMATION_LABELS[getNextAnimation(id)]);
+      setCurrentLabel(ANIMATION_LABELS[id]);
     };
 
     document.addEventListener("astro:after-swap", handleSwap);
@@ -33,7 +33,7 @@ export default function AnimationSwitcher() {
     );
     saveAnimation(nextId);
     committedRef.current = nextId;
-    setNextLabel(ANIMATION_LABELS[getNextAnimation(nextId)]);
+    setCurrentLabel(ANIMATION_LABELS[nextId]);
     document.dispatchEvent(
       new CustomEvent("animation-changed", { detail: { id: nextId } })
     );
@@ -51,7 +51,7 @@ export default function AnimationSwitcher() {
         className="text-foreground font-bold text-sm select-none transition-opacity duration-200"
         style={{ opacity: hovering ? 0.8 : 0.15 }}
       >
-        {nextLabel}
+        {currentLabel}
       </span>
     </div>
   );

src/src/components/background/engines/asciiquarium.ts

@@ -0,0 +1,574 @@
+import type { AnimationEngine } from "@/lib/animations/types";
+
+// --- ASCII Art ---
+
+interface AsciiPattern {
+  lines: string[];
+  width: number;
+  height: number;
+}
+
+function pat(lines: string[]): AsciiPattern {
+  return {
+    lines,
+    width: Math.max(...lines.map((l) => l.length)),
+    height: lines.length,
+  };
+}
+
+const FISH_DEFS: {
+  size: "small" | "medium";
+  weight: number;
+  right: AsciiPattern;
+  left: AsciiPattern;
+}[] = [
+  { size: "small", weight: 30, right: pat(["><>"]), left: pat(["<><"]) },
+  {
+    size: "small",
+    weight: 30,
+    right: pat(["><(('>"]),
+    left: pat(["<'))><"]),
+  },
+  {
+    size: "medium",
+    weight: 20,
+    right: pat(["><((o>"]),
+    left: pat(["<o))><"]),
+  },
+  {
+    size: "medium",
+    weight: 10,
+    right: pat(["><((('>"]),
+    left: pat(["<')))><"]),
+  },
+];
+
+const TOTAL_FISH_WEIGHT = FISH_DEFS.reduce((s, d) => s + d.weight, 0);
+
+const BUBBLE_CHARS = [".", "o", "O"];
+
+// --- Entity Interfaces ---
+
+interface FishEntity {
+  kind: "fish";
+  x: number;
+  y: number;
+  vx: number;
+  pattern: AsciiPattern;
+  size: "small" | "medium";
+  color: [number, number, number];
+  baseColor: [number, number, number];
+  opacity: number;
+  elevation: number;
+  targetElevation: number;
+  staggerDelay: number;
+}
+
+interface BubbleEntity {
+  kind: "bubble";
+  x: number;
+  y: number;
+  vy: number;
+  wobblePhase: number;
+  wobbleAmplitude: number;
+  char: string;
+  color: [number, number, number];
+  baseColor: [number, number, number];
+  opacity: number;
+  elevation: number;
+  targetElevation: number;
+  staggerDelay: number;
+  burst: boolean;
+}
+
+type AquariumEntity = FishEntity | BubbleEntity;
+
+// --- Constants ---
+
+const BASE_AREA = 1920 * 1080;
+const BASE_FISH = 16;
+const BASE_BUBBLES = 12;
+
+const TARGET_FPS = 60;
+const FONT_SIZE_MIN = 24;
+const FONT_SIZE_MAX = 36;
+const FONT_SIZE_REF_WIDTH = 1920;
+const LINE_HEIGHT_RATIO = 1.15;
+const STAGGER_INTERVAL = 15;
+const PI_2 = Math.PI * 2;
+
+const MOUSE_INFLUENCE_RADIUS = 150;
+const ELEVATION_FACTOR = 6;
+const ELEVATION_LERP_SPEED = 0.05;
+const COLOR_SHIFT_AMOUNT = 30;
+const SHADOW_OFFSET_RATIO = 1.1;
+
+const FISH_SPEED: Record<string, { min: number; max: number }> = {
+  small: { min: 0.8, max: 1.4 },
+  medium: { min: 0.5, max: 0.9 },
+};
+
+const BUBBLE_SPEED_MIN = 0.3;
+const BUBBLE_SPEED_MAX = 0.7;
+const BUBBLE_WOBBLE_MIN = 0.3;
+const BUBBLE_WOBBLE_MAX = 1.0;
+
+const BURST_BUBBLE_COUNT = 10;
+
+// --- Helpers ---
+
+function range(a: number, b: number): number {
+  return (b - a) * Math.random() + a;
+}
+
+function pickFishDef() {
+  let r = Math.random() * TOTAL_FISH_WEIGHT;
+  for (const def of FISH_DEFS) {
+    r -= def.weight;
+    if (r <= 0) return def;
+  }
+  return FISH_DEFS[0];
+}
+
+// --- Engine ---
+
+export class AsciiquariumEngine implements AnimationEngine {
+  id = "asciiquarium";
+  name = "Asciiquarium";
+
+  private fish: FishEntity[] = [];
+  private bubbles: BubbleEntity[] = [];
+  private exiting = false;
+  private palette: [number, number, number][] = [];
+  private width = 0;
+  private height = 0;
+  private mouseX = -1000;
+  private mouseY = -1000;
+  private elapsed = 0;
+  private charWidth = 0;
+  private fontSize = FONT_SIZE_MAX;
+  private lineHeight = FONT_SIZE_MAX * LINE_HEIGHT_RATIO;
+  private font = `bold ${FONT_SIZE_MAX}px monospace`;
+
+  private computeFont(width: number): void {
+    const t = Math.sqrt(Math.min(1, width / FONT_SIZE_REF_WIDTH));
+    this.fontSize = Math.round(FONT_SIZE_MIN + (FONT_SIZE_MAX - FONT_SIZE_MIN) * t);
+    this.lineHeight = Math.round(this.fontSize * LINE_HEIGHT_RATIO);
+    this.font = `bold ${this.fontSize}px monospace`;
+    this.charWidth = 0;
+  }
+
+  init(
+    width: number,
+    height: number,
+    palette: [number, number, number][],
+    _bgColor: string
+  ): void {
+    this.width = width;
+    this.height = height;
+    this.palette = palette;
+    this.elapsed = 0;
+    this.computeFont(width);
+    this.initEntities();
+  }
+
+  beginExit(): void {
+    if (this.exiting) return;
+    this.exiting = true;
+
+    // Stagger fade-out over 3 seconds
+    for (const f of this.fish) {
+      const delay = Math.random() * 3000;
+      setTimeout(() => {
+        f.staggerDelay = -2; // signal: fading out
+      }, delay);
+    }
+    for (const b of this.bubbles) {
+      const delay = Math.random() * 3000;
+      setTimeout(() => {
+        b.staggerDelay = -2;
+      }, delay);
+    }
+  }
+
+  isExitComplete(): boolean {
+    if (!this.exiting) return false;
+    for (const f of this.fish) {
+      if (f.opacity > 0.01) return false;
+    }
+    for (const b of this.bubbles) {
+      if (b.opacity > 0.01) return false;
+    }
+    return true;
+  }
+
+  cleanup(): void {
+    this.fish = [];
+    this.bubbles = [];
+  }
+
+  private randomColor(): [number, number, number] {
+    return this.palette[Math.floor(Math.random() * this.palette.length)];
+  }
+
+  private getCounts(): { fish: number; bubbles: number } {
+    const ratio = (this.width * this.height) / BASE_AREA;
+    return {
+      fish: Math.max(5, Math.round(BASE_FISH * ratio)),
+      bubbles: Math.max(5, Math.round(BASE_BUBBLES * ratio)),
+    };
+  }
+
+  private initEntities(): void {
+    this.fish = [];
+    this.bubbles = [];
+
+    const counts = this.getCounts();
+    let idx = 0;
+
+    for (let i = 0; i < counts.fish; i++) {
+      this.fish.push(this.spawnFish(idx++));
+    }
+
+    for (let i = 0; i < counts.bubbles; i++) {
+      this.bubbles.push(this.spawnBubble(idx++, false));
+    }
+  }
+
+  private spawnFish(staggerIdx: number): FishEntity {
+    const def = pickFishDef();
+    const goRight = Math.random() > 0.5;
+    const speed = range(FISH_SPEED[def.size].min, FISH_SPEED[def.size].max);
+    const pattern = goRight ? def.right : def.left;
+    const baseColor = this.randomColor();
+    const cw = this.charWidth || 9.6;
+    const pw = pattern.width * cw;
+
+    // Start off-screen on the side they swim from
+    const startX = goRight
+      ? -pw - range(0, this.width * 0.5)
+      : this.width + range(0, this.width * 0.5);
+
+    return {
+      kind: "fish",
+      x: startX,
+      y: range(this.height * 0.05, this.height * 0.9),
+      vx: goRight ? speed : -speed,
+      pattern,
+      size: def.size,
+      color: [...baseColor],
+      baseColor,
+      opacity: 1,
+      elevation: 0,
+      targetElevation: 0,
+      staggerDelay: -1,
+    };
+  }
+
+  private spawnBubble(staggerIdx: number, burst: boolean): BubbleEntity {
+    const baseColor = this.randomColor();
+    return {
+      kind: "bubble",
+      x: range(0, this.width),
+      y: burst ? 0 : this.height + range(10, this.height * 0.5),
+      vy: -range(BUBBLE_SPEED_MIN, BUBBLE_SPEED_MAX),
+      wobblePhase: range(0, PI_2),
+      wobbleAmplitude: range(BUBBLE_WOBBLE_MIN, BUBBLE_WOBBLE_MAX),
+      char: BUBBLE_CHARS[Math.floor(Math.random() * BUBBLE_CHARS.length)],
+      color: [...baseColor],
+      baseColor,
+      opacity: 1,
+      elevation: 0,
+      targetElevation: 0,
+      staggerDelay: -1,
+      burst,
+    };
+  }
+
+  // --- Update ---
+
+  update(deltaTime: number): void {
+    const dt = deltaTime / (1000 / TARGET_FPS);
+    this.elapsed += deltaTime;
+
+    const mouseX = this.mouseX;
+    const mouseY = this.mouseY;
+    const cw = this.charWidth || 9.6;
+
+    // Fish
+    for (let i = this.fish.length - 1; i >= 0; i--) {
+      const f = this.fish[i];
+      if (f.staggerDelay >= 0) {
+        if (this.elapsed >= f.staggerDelay) f.staggerDelay = -1;
+        else continue;
+      }
+
+      // Fade out during exit
+      if (f.staggerDelay === -2) {
+        f.opacity -= 0.02 * dt;
+        if (f.opacity <= 0) { f.opacity = 0; continue; }
+      } else if (f.opacity < 1) {
+        f.opacity = Math.min(1, f.opacity + 0.03 * dt);
+      }
+
+      f.x += f.vx * dt;
+
+      const pw = f.pattern.width * cw;
+      if (f.vx > 0 && f.x > this.width + pw) {
+        f.x = -pw;
+      } else if (f.vx < 0 && f.x < -pw) {
+        f.x = this.width + pw;
+      }
+
+      const cx = f.x + (f.pattern.width * cw) / 2;
+      const cy = f.y + (f.pattern.height * this.lineHeight) / 2;
+      this.applyMouseInfluence(f, cx, cy, mouseX, mouseY, dt);
+    }
+
+    // Bubbles (reverse iteration for safe splice)
+    for (let i = this.bubbles.length - 1; i >= 0; i--) {
+      const b = this.bubbles[i];
+
+      if (b.staggerDelay >= 0) {
+        if (this.elapsed >= b.staggerDelay) b.staggerDelay = -1;
+        else continue;
+      }
+
+      // Fade out during exit
+      if (b.staggerDelay === -2) {
+        b.opacity -= 0.02 * dt;
+        if (b.opacity <= 0) { b.opacity = 0; continue; }
+      } else if (b.opacity < 1) {
+        b.opacity = Math.min(1, b.opacity + 0.03 * dt);
+      }
+
+      b.y += b.vy * dt;
+      b.x +=
+        Math.sin(this.elapsed * 0.003 + b.wobblePhase) *
+        b.wobbleAmplitude *
+        dt;
+
+      if (b.y < -20) {
+        if (b.burst) {
+          this.bubbles.splice(i, 1);
+          continue;
+        } else {
+          b.y = this.height + range(10, 40);
+          b.x = range(0, this.width);
+        }
+      }
+
+      this.applyMouseInfluence(b, b.x, b.y, mouseX, mouseY, dt);
+    }
+  }
+
+  private applyMouseInfluence(
+    entity: AquariumEntity,
+    cx: number,
+    cy: number,
+    mouseX: number,
+    mouseY: number,
+    dt: number
+  ): void {
+    const dx = cx - mouseX;
+    const dy = cy - mouseY;
+    const dist = Math.sqrt(dx * dx + dy * dy);
+
+    if (dist < MOUSE_INFLUENCE_RADIUS && entity.opacity > 0.1) {
+      const inf = Math.cos((dist / MOUSE_INFLUENCE_RADIUS) * (Math.PI / 2));
+      entity.targetElevation = ELEVATION_FACTOR * inf * inf;
+
+      const shift = inf * COLOR_SHIFT_AMOUNT * 0.5;
+      entity.color = [
+        Math.min(255, Math.max(0, entity.baseColor[0] + shift)),
+        Math.min(255, Math.max(0, entity.baseColor[1] + shift)),
+        Math.min(255, Math.max(0, entity.baseColor[2] + shift)),
+      ];
+    } else {
+      entity.targetElevation = 0;
+      entity.color[0] += (entity.baseColor[0] - entity.color[0]) * 0.1;
+      entity.color[1] += (entity.baseColor[1] - entity.color[1]) * 0.1;
+      entity.color[2] += (entity.baseColor[2] - entity.color[2]) * 0.1;
+    }
+
+    entity.elevation +=
+      (entity.targetElevation - entity.elevation) * ELEVATION_LERP_SPEED * dt;
+  }
+
+  // --- Render ---
+
+  render(
+    ctx: CanvasRenderingContext2D,
+    _width: number,
+    _height: number
+  ): void {
+    if (!this.charWidth) {
+      ctx.font = this.font;
+      this.charWidth = ctx.measureText("M").width;
+    }
+
+    ctx.font = this.font;
+    ctx.textBaseline = "top";
+
+    // Fish
+    for (const f of this.fish) {
+      if (f.opacity <= 0.01 || f.staggerDelay >= 0) continue;
+      this.renderPattern(
+        ctx,
+        f.pattern,
+        f.x,
+        f.y,
+        f.color,
+        f.opacity,
+        f.elevation
+      );
+    }
+
+    // Bubbles
+    for (const b of this.bubbles) {
+      if (b.opacity <= 0.01 || b.staggerDelay >= 0) continue;
+      this.renderChar(ctx, b.char, b.x, b.y, b.color, b.opacity, b.elevation);
+    }
+
+    ctx.globalAlpha = 1;
+  }
+
+  private renderPattern(
+    ctx: CanvasRenderingContext2D,
+    pattern: AsciiPattern,
+    x: number,
+    y: number,
+    color: [number, number, number],
+    opacity: number,
+    elevation: number
+  ): void {
+    const drawY = y - elevation;
+    const [r, g, b] = color;
+
+    // Shadow
+    if (elevation > 0.5) {
+      const shadowAlpha = 0.2 * (elevation / ELEVATION_FACTOR) * opacity;
+      ctx.globalAlpha = shadowAlpha;
+      ctx.fillStyle = "rgb(0,0,0)";
+      for (let line = 0; line < pattern.height; line++) {
+        ctx.fillText(
+          pattern.lines[line],
+          x,
+          drawY + line * this.lineHeight + elevation * SHADOW_OFFSET_RATIO
+        );
+      }
+    }
+
+    // Main text
+    ctx.globalAlpha = opacity;
+    ctx.fillStyle = `rgb(${r},${g},${b})`;
+    for (let line = 0; line < pattern.height; line++) {
+      ctx.fillText(pattern.lines[line], x, drawY + line * this.lineHeight);
+    }
+
+    // Highlight (top half of lines)
+    if (elevation > 0.5) {
+      const highlightAlpha = 0.1 * (elevation / ELEVATION_FACTOR) * opacity;
+      ctx.globalAlpha = highlightAlpha;
+      ctx.fillStyle = "rgb(255,255,255)";
+      const topLines = Math.ceil(pattern.height / 2);
+      for (let line = 0; line < topLines; line++) {
+        ctx.fillText(pattern.lines[line], x, drawY + line * this.lineHeight);
+      }
+    }
+  }
+
+  private renderChar(
+    ctx: CanvasRenderingContext2D,
+    char: string,
+    x: number,
+    y: number,
+    color: [number, number, number],
+    opacity: number,
+    elevation: number
+  ): void {
+    const drawY = y - elevation;
+    const [r, g, b] = color;
+
+    // Shadow
+    if (elevation > 0.5) {
+      const shadowAlpha = 0.2 * (elevation / ELEVATION_FACTOR) * opacity;
+      ctx.globalAlpha = shadowAlpha;
+      ctx.fillStyle = "rgb(0,0,0)";
+      ctx.fillText(char, x, drawY + elevation * SHADOW_OFFSET_RATIO);
+    }
+
+    // Main
+    ctx.globalAlpha = opacity;
+    ctx.fillStyle = `rgb(${r},${g},${b})`;
+    ctx.fillText(char, x, drawY);
+
+    // Highlight
+    if (elevation > 0.5) {
+      const highlightAlpha = 0.1 * (elevation / ELEVATION_FACTOR) * opacity;
+      ctx.globalAlpha = highlightAlpha;
+      ctx.fillStyle = "rgb(255,255,255)";
+      ctx.fillText(char, x, drawY);
+    }
+  }
+
+  // --- Events ---
+
+  handleResize(width: number, height: number): void {
+    this.width = width;
+    this.height = height;
+    this.elapsed = 0;
+    this.exiting = false;
+    this.computeFont(width);
+    this.initEntities();
+  }
+
+  handleMouseMove(x: number, y: number, _isDown: boolean): void {
+    this.mouseX = x;
+    this.mouseY = y;
+  }
+
+  handleMouseDown(x: number, y: number): void {
+    for (let i = 0; i < BURST_BUBBLE_COUNT; i++) {
+      const baseColor = this.randomColor();
+      const angle = (i / BURST_BUBBLE_COUNT) * PI_2 + range(-0.3, 0.3);
+      const speed = range(0.3, 1.0);
+      this.bubbles.push({
+        kind: "bubble",
+        x,
+        y,
+        vy: -Math.abs(Math.sin(angle) * speed) - 0.3,
+        wobblePhase: range(0, PI_2),
+        wobbleAmplitude: Math.cos(angle) * speed * 0.5,
+        char: BUBBLE_CHARS[Math.floor(Math.random() * BUBBLE_CHARS.length)],
+        color: [...baseColor],
+        baseColor,
+        opacity: 1,
+        elevation: 0,
+        targetElevation: 0,
+        staggerDelay: this.exiting ? -2 : -1,
+        burst: true,
+      });
+    }
+  }
+
+  handleMouseUp(): void {}
+
+  handleMouseLeave(): void {
+    this.mouseX = -1000;
+    this.mouseY = -1000;
+  }
+
+  updatePalette(
+    palette: [number, number, number][],
+    _bgColor: string
+  ): void {
+    this.palette = palette;
+    for (let i = 0; i < this.fish.length; i++) {
+      this.fish[i].baseColor = palette[i % palette.length];
+    }
+    for (let i = 0; i < this.bubbles.length; i++) {
+      this.bubbles[i].baseColor = palette[i % palette.length];
+    }
+  }
+}

src/src/components/background/engines/confetti.ts

@@ -16,7 +16,7 @@ interface ConfettiParticle {
   burst: boolean;
 }
 
-const BASE_CONFETTI = 350;
+const BASE_CONFETTI = 385;
 const BASE_AREA = 1920 * 1080;
 const PI_2 = 2 * Math.PI;
 const TARGET_FPS = 60;
@@ -45,6 +45,7 @@ export class ConfettiEngine implements AnimationEngine {
   private mouseY = -1000;
   private mouseXNorm = 0.5;
   private elapsed = 0;
+  private exiting = false;
 
   init(
     width: number,
@@ -60,6 +61,30 @@ export class ConfettiEngine implements AnimationEngine {
     this.initParticles();
   }
 
+  beginExit(): void {
+    if (this.exiting) return;
+    this.exiting = true;
+
+    // Stagger fade-out over 3 seconds
+    for (let i = 0; i < this.particles.length; i++) {
+      const p = this.particles[i];
+      p.staggerDelay = -1; // ensure visible
+      // Random delay before fade starts, stored as negative dop
+      const delay = Math.random() * 3000;
+      setTimeout(() => {
+        p.dop = -0.02;
+      }, delay);
+    }
+  }
+
+  isExitComplete(): boolean {
+    if (!this.exiting) return false;
+    for (let i = 0; i < this.particles.length; i++) {
+      if (this.particles[i].opacity > 0.01) return false;
+    }
+    return true;
+  }
+
   cleanup(): void {
     this.particles = [];
   }
@@ -140,15 +165,18 @@ export class ConfettiEngine implements AnimationEngine {
       p.x += p.vx * dt;
       p.y += p.vy * dt;
 
-      // Fade in only (no fade-out cycle)
+      // Fade in, or fade out during exit
-      if (p.opacity < 1) {
+      if (this.exiting && p.dop < 0) {
+        p.opacity += p.dop * dt;
+        if (p.opacity < 0) p.opacity = 0;
+      } else if (p.opacity < 1) {
         p.opacity += Math.abs(p.dop) * dt;
         if (p.opacity > 1) p.opacity = 1;
       }
 
-      // Past the bottom: burst particles get removed, base particles recycle
+      // Past the bottom: burst particles removed, base particles recycle (or remove during exit)
       if (p.y > this.height + p.r) {
-        if (p.burst) {
+        if (p.burst || this.exiting) {
           this.particles.splice(i, 1);
           i--;
         } else {
@@ -230,7 +258,7 @@ export class ConfettiEngine implements AnimationEngine {
       }
 
       // Main circle
-      ctx.globalAlpha = p.opacity * 0.9;
+      ctx.globalAlpha = p.opacity;
       ctx.fillStyle = `rgb(${r},${g},${b})`;
       ctx.beginPath();
       ctx.arc(drawX, drawY, p.r, 0, PI_2);
@@ -254,29 +282,8 @@ export class ConfettiEngine implements AnimationEngine {
   handleResize(width: number, height: number): void {
     this.width = width;
     this.height = height;
-    const target = this.getParticleCount();
+    this.elapsed = 0;
-    while (this.particles.length < target) {
+    this.initParticles();
-      const baseColor = this.randomColor();
-      const r = ~~range(3, 8);
-      this.particles.push({
-        x: range(-r * 2, width - r * 2),
-        y: range(-20, height - r * 2),
-        vx: (range(0, 2) + 8 * 0.5 - 5) * SPEED_FACTOR,
-        vy: (0.7 * r + range(-1, 1)) * SPEED_FACTOR,
-        r,
-        color: [...baseColor],
-        baseColor,
-        opacity: 0,
-        dop: 0.03 * range(1, 4) * SPEED_FACTOR,
-        elevation: 0,
-        targetElevation: 0,
-        staggerDelay: -1,
-        burst: false,
-      });
-    }
-    if (this.particles.length > target) {
-      this.particles.length = target;
-    }
   }
 
   handleMouseMove(x: number, y: number, _isDown: boolean): void {
@@ -303,7 +310,7 @@ export class ConfettiEngine implements AnimationEngine {
         color: [...baseColor],
         baseColor,
         opacity: 1,
-        dop: 0,
+        dop: this.exiting ? -0.02 : 0,
         elevation: 0,
         targetElevation: 0,
         staggerDelay: -1,
@@ -322,8 +329,8 @@ export class ConfettiEngine implements AnimationEngine {
 
   updatePalette(palette: [number, number, number][], _bgColor: string): void {
     this.palette = palette;
-    for (const p of this.particles) {
+    for (let i = 0; i < this.particles.length; i++) {
-      p.baseColor = palette[Math.floor(Math.random() * palette.length)];
+      this.particles[i].baseColor = palette[i % palette.length];
     }
   }
 }

src/src/components/background/engines/game-of-life.ts

@@ -59,6 +59,7 @@ export class GameOfLifeEngine implements AnimationEngine {
   private pendingTimeouts: ReturnType<typeof setTimeout>[] = [];
   private canvasWidth = 0;
   private canvasHeight = 0;
+  private exiting = false;
 
   init(
     width: number,
@@ -278,13 +279,60 @@ export class GameOfLifeEngine implements AnimationEngine {
     }
   }
 
+  beginExit(): void {
+    if (this.exiting || !this.grid) return;
+    this.exiting = true;
+
+    // Cancel all pending GOL transitions so they don't revive cells
+    for (const id of this.pendingTimeouts) {
+      clearTimeout(id);
+    }
+    this.pendingTimeouts = [];
+
+    const grid = this.grid;
+    for (let i = 0; i < grid.cols; i++) {
+      for (let j = 0; j < grid.rows; j++) {
+        const cell = grid.cells[i][j];
+        // Force cell into dying state, clear any pending transition
+        cell.next = false;
+        cell.transitioning = false;
+        cell.transitionComplete = false;
+
+        if (cell.opacity > 0.01) {
+          const delay = Math.random() * 3000;
+          const tid = setTimeout(() => {
+            cell.targetOpacity = 0;
+            cell.targetScale = 0;
+            cell.targetElevation = 0;
+          }, delay);
+          this.pendingTimeouts.push(tid);
+        }
+      }
+    }
+  }
+
+  isExitComplete(): boolean {
+    if (!this.exiting) return false;
+    if (!this.grid) return true;
+
+    const grid = this.grid;
+    for (let i = 0; i < grid.cols; i++) {
+      for (let j = 0; j < grid.rows; j++) {
+        if (grid.cells[i][j].opacity > 0.01) return false;
+      }
+    }
+    return true;
+  }
+
   update(deltaTime: number): void {
     if (!this.grid) return;
 
-    this.timeAccumulator += deltaTime;
+    if (!this.exiting) {
-    if (this.timeAccumulator >= CYCLE_TIME) {
+      this.timeAccumulator += deltaTime;
-      this.computeNextState(this.grid);
+      if (this.timeAccumulator >= CYCLE_TIME) {
-      this.timeAccumulator -= CYCLE_TIME;
+        this.computeNextState(this.grid);
+        this.timeAccumulator -= CYCLE_TIME;
+      }
     }
 
     this.updateCellAnimations(this.grid, deltaTime);
@@ -335,7 +383,15 @@ export class GameOfLifeEngine implements AnimationEngine {
           cell.targetElevation = 0;
         }
 
-        if (cell.transitioning) {
+        // During exit: snap to zero once close enough
+        if (this.exiting) {
+          if (cell.opacity < 0.05) {
+            cell.opacity = 0;
+            cell.scale = 0;
+            cell.elevation = 0;
+            cell.alive = false;
+          }
+        } else if (cell.transitioning) {
           if (!cell.next && cell.opacity < 0.01 && cell.scale < 0.01) {
             cell.alive = false;
             cell.transitioning = false;
@@ -532,7 +588,7 @@ export class GameOfLifeEngine implements AnimationEngine {
     this.mouseY = y;
     this.mouseIsDown = isDown;
 
-    if (isDown && this.grid) {
+    if (isDown && this.grid && !this.exiting) {
       const grid = this.grid;
       const cellSize = this.getCellSize();
       const cellX = Math.floor((x - grid.offsetX) / cellSize);
@@ -560,7 +616,7 @@ export class GameOfLifeEngine implements AnimationEngine {
   handleMouseDown(x: number, y: number): void {
     this.mouseIsDown = true;
 
-    if (!this.grid) return;
+    if (!this.grid || this.exiting) return;
     const grid = this.grid;
     const cellSize = this.getCellSize();
 
@@ -605,8 +661,7 @@ export class GameOfLifeEngine implements AnimationEngine {
         for (let j = 0; j < grid.rows; j++) {
           const cell = grid.cells[i][j];
           if (cell.alive && cell.opacity > 0.01) {
-            cell.baseColor =
+            cell.baseColor = palette[(i * grid.rows + j) % palette.length];
-              palette[Math.floor(Math.random() * palette.length)];
           }
         }
       }

src/src/components/background/engines/lava-lamp.ts

@@ -53,6 +53,7 @@ export class LavaLampEngine implements AnimationEngine {
   private shadowCtx: CanvasRenderingContext2D | null = null;
   private elapsed = 0;
   private nextCycleTime = 0;
+  private exiting = false;
 
   // Pre-allocated typed arrays for the inner render loop (avoid per-frame GC)
   private blobX: Float64Array = new Float64Array(0);
@@ -170,6 +171,27 @@ export class LavaLampEngine implements AnimationEngine {
     });
   }
 
+  beginExit(): void {
+    if (this.exiting) return;
+    this.exiting = true;
+
+    for (let i = 0; i < this.blobs.length; i++) {
+      const blob = this.blobs[i];
+      if (blob.staggerDelay >= 0) {
+        blob.staggerDelay = -1;
+      }
+      // Stagger the shrink over ~2 seconds
+      setTimeout(() => {
+        blob.targetRadiusScale = 0;
+      }, Math.random() * 2000);
+    }
+  }
+
+  isExitComplete(): boolean {
+    if (!this.exiting) return false;
+    return this.blobs.length === 0;
+  }
+
   cleanup(): void {
     this.blobs = [];
     this.offCanvas = null;
@@ -279,7 +301,7 @@ export class LavaLampEngine implements AnimationEngine {
     }
 
     // Natural spawn/despawn cycle — keeps the scene alive
-    if (this.elapsed >= this.nextCycleTime) {
+    if (!this.exiting && this.elapsed >= this.nextCycleTime) {
       // Pick a random visible blob to fade out (skip ones still staggering in)
       const visible = [];
       for (let i = 0; i < this.blobs.length; i++) {
@@ -433,12 +455,11 @@ export class LavaLampEngine implements AnimationEngine {
   handleResize(width: number, height: number): void {
     this.width = width;
     this.height = height;
+    this.elapsed = 0;
+    this.exiting = false;
+    this.nextCycleTime = CYCLE_MIN_MS + Math.random() * (CYCLE_MAX_MS - CYCLE_MIN_MS);
+    this.initBlobs();
     this.initOffscreenCanvas();
-
-    const { min, max } = this.getRadiusRange();
-    for (const blob of this.blobs) {
-      blob.baseRadius = min + Math.random() * (max - min);
-    }
   }
 
   private sampleColorAt(x: number, y: number): [number, number, number] | null {
@@ -475,6 +496,7 @@ export class LavaLampEngine implements AnimationEngine {
   }
 
   handleMouseDown(x: number, y: number): void {
+    if (this.exiting) return;
     this.spawnAt(x, y);
   }
 

src/src/components/background/engines/pipes.ts

@@ -0,0 +1,480 @@
+import type { AnimationEngine } from "@/lib/animations/types";
+
+// --- Directions ---
+
+type Dir = 0 | 1 | 2 | 3; // up, right, down, left
+const DX = [0, 1, 0, -1];
+const DY = [-1, 0, 1, 0];
+
+// Box-drawing characters
+const HORIZONTAL = "\u2501"; // ━
+const VERTICAL = "\u2503"; // ┃
+// Corner pieces: [oldDir]-[newDir]
+// oldDir determines entry side (opposite), newDir determines exit side
+// ┏ = RIGHT+BOTTOM, ┓ = LEFT+BOTTOM, ┗ = RIGHT+TOP, ┛ = LEFT+TOP
+const CORNER: Record<string, string> = {
+  "0-1": "\u250F", // ┏  enter BOTTOM, exit RIGHT
+  "0-3": "\u2513", // ┓  enter BOTTOM, exit LEFT
+  "1-0": "\u251B", // ┛  enter LEFT, exit TOP
+  "1-2": "\u2513", // ┓  enter LEFT, exit BOTTOM
+  "2-1": "\u2517", // ┗  enter TOP, exit RIGHT
+  "2-3": "\u251B", // ┛  enter TOP, exit LEFT
+  "3-0": "\u2517", // ┗  enter RIGHT, exit TOP
+  "3-2": "\u250F", // ┏  enter RIGHT, exit BOTTOM
+};
+
+function getStraightChar(dir: Dir): string {
+  return dir === 0 || dir === 2 ? VERTICAL : HORIZONTAL;
+}
+
+function getCornerChar(fromDir: Dir, toDir: Dir): string {
+  return CORNER[`${fromDir}-${toDir}`] || HORIZONTAL;
+}
+
+// --- Grid Cell ---
+
+interface PipeCell {
+  char: string;
+  pipeId: number;
+  placedAt: number;
+  color: [number, number, number];
+  baseColor: [number, number, number];
+  opacity: number;
+  elevation: number;
+  targetElevation: number;
+  fadeOut: boolean;
+}
+
+// --- Active Pipe ---
+
+interface ActivePipe {
+  id: number;
+  x: number;
+  y: number;
+  dir: Dir;
+  color: [number, number, number];
+  spawnDelay: number;
+}
+
+// --- Constants ---
+
+const CELL_SIZE_DESKTOP = 20;
+const CELL_SIZE_MOBILE = 14;
+const MAX_ACTIVE_PIPES = 4;
+const GROW_INTERVAL = 80;
+const TURN_CHANCE = 0.3;
+const TARGET_FPS = 60;
+const PIPE_LIFETIME = 12_000; // ms before a pipe's segments start fading
+const FADE_IN_SPEED = 0.06;
+const FADE_OUT_SPEED = 0.02;
+
+const MOUSE_INFLUENCE_RADIUS = 150;
+const ELEVATION_FACTOR = 6;
+const ELEVATION_LERP_SPEED = 0.05;
+const COLOR_SHIFT_AMOUNT = 30;
+const SHADOW_OFFSET_RATIO = 1.1;
+
+const BURST_PIPE_COUNT = 4;
+
+// --- Helpers ---
+
+function range(a: number, b: number): number {
+  return (b - a) * Math.random() + a;
+}
+
+// --- Engine ---
+
+export class PipesEngine implements AnimationEngine {
+  id = "pipes";
+  name = "Pipes";
+
+  private grid: (PipeCell | null)[][] = [];
+  private cols = 0;
+  private rows = 0;
+  private activePipes: ActivePipe[] = [];
+  private palette: [number, number, number][] = [];
+  private width = 0;
+  private height = 0;
+  private cellSize = CELL_SIZE_DESKTOP;
+  private fontSize = CELL_SIZE_DESKTOP;
+  private font = `bold ${CELL_SIZE_DESKTOP}px monospace`;
+  private mouseX = -1000;
+  private mouseY = -1000;
+  private elapsed = 0;
+  private growTimer = 0;
+  private exiting = false;
+  private nextPipeId = 0;
+  private offsetX = 0;
+  private offsetY = 0;
+
+  init(
+    width: number,
+    height: number,
+    palette: [number, number, number][],
+    _bgColor: string
+  ): void {
+    this.width = width;
+    this.height = height;
+    this.palette = palette;
+    this.elapsed = 0;
+    this.growTimer = 0;
+    this.exiting = false;
+    this.computeGrid();
+    this.spawnInitialPipes();
+  }
+
+  private computeGrid(): void {
+    this.cellSize = this.width <= 768 ? CELL_SIZE_MOBILE : CELL_SIZE_DESKTOP;
+    this.fontSize = this.cellSize;
+    this.font = `bold ${this.fontSize}px monospace`;
+    this.cols = Math.floor(this.width / this.cellSize);
+    this.rows = Math.floor(this.height / this.cellSize);
+    this.offsetX = Math.floor((this.width - this.cols * this.cellSize) / 2);
+    this.offsetY = Math.floor((this.height - this.rows * this.cellSize) / 2);
+    this.grid = Array.from({ length: this.cols }, () =>
+      Array.from({ length: this.rows }, () => null)
+    );
+  }
+
+  private randomColor(): [number, number, number] {
+    // Prefer bright variants (second half of palette) if available
+    const brightStart = Math.floor(this.palette.length / 2);
+    if (brightStart > 0 && this.palette.length > brightStart) {
+      return this.palette[brightStart + Math.floor(Math.random() * (this.palette.length - brightStart))];
+    }
+    return this.palette[Math.floor(Math.random() * this.palette.length)];
+  }
+
+  private spawnInitialPipes(): void {
+    this.activePipes = [];
+    for (let i = 0; i < MAX_ACTIVE_PIPES; i++) {
+      this.activePipes.push(this.makeEdgePipe(i * 400));
+    }
+  }
+
+  private makeEdgePipe(delay: number): ActivePipe {
+    const color = this.randomColor();
+    // Pick a random edge and inward-facing direction
+    const edge = Math.floor(Math.random() * 4) as Dir;
+    let x: number, y: number, dir: Dir;
+
+    switch (edge) {
+      case 0: // top edge, face down
+        x = Math.floor(Math.random() * this.cols);
+        y = 0;
+        dir = 2;
+        break;
+      case 1: // right edge, face left
+        x = this.cols - 1;
+        y = Math.floor(Math.random() * this.rows);
+        dir = 3;
+        break;
+      case 2: // bottom edge, face up
+        x = Math.floor(Math.random() * this.cols);
+        y = this.rows - 1;
+        dir = 0;
+        break;
+      default: // left edge, face right
+        x = 0;
+        y = Math.floor(Math.random() * this.rows);
+        dir = 1;
+        break;
+    }
+
+    return { id: this.nextPipeId++, x, y, dir, color: [...color], spawnDelay: delay };
+  }
+
+  private placeSegment(x: number, y: number, char: string, color: [number, number, number], pipeId: number): void {
+    if (x < 0 || x >= this.cols || y < 0 || y >= this.rows) return;
+    this.grid[x][y] = {
+      char,
+      pipeId,
+      placedAt: this.elapsed,
+      color: [...color],
+      baseColor: [...color],
+      opacity: 0,
+      elevation: 0,
+      targetElevation: 0,
+      fadeOut: false,
+    };
+  }
+
+  private isOccupied(x: number, y: number): boolean {
+    if (x < 0 || x >= this.cols || y < 0 || y >= this.rows) return true;
+    return this.grid[x][y] !== null;
+  }
+
+  private pickTurn(currentDir: Dir): Dir {
+    // Turn left or right relative to current direction
+    const leftDir = ((currentDir + 3) % 4) as Dir;
+    const rightDir = ((currentDir + 1) % 4) as Dir;
+    return Math.random() < 0.5 ? leftDir : rightDir;
+  }
+
+  private growPipe(pipe: ActivePipe): boolean {
+    // Decide direction
+    let newDir = pipe.dir;
+    let turned = false;
+    if (Math.random() < TURN_CHANCE) {
+      newDir = this.pickTurn(pipe.dir);
+      turned = true;
+    }
+
+    const nx = pipe.x + DX[newDir];
+    const ny = pipe.y + DY[newDir];
+
+    // Check if destination is valid
+    if (this.isOccupied(nx, ny)) {
+      // If we tried to turn, try going straight instead
+      if (turned) {
+        const sx = pipe.x + DX[pipe.dir];
+        const sy = pipe.y + DY[pipe.dir];
+        if (!this.isOccupied(sx, sy)) {
+          // Continue straight — place straight piece at destination
+          this.placeSegment(sx, sy, getStraightChar(pipe.dir), pipe.color, pipe.id);
+          pipe.x = sx;
+          pipe.y = sy;
+          return true;
+        }
+      }
+      return false; // dead end
+    }
+
+    if (turned) {
+      // Replace current head cell with corner piece (turn happens HERE)
+      const cell = this.grid[pipe.x]?.[pipe.y];
+      if (cell) {
+        cell.char = getCornerChar(pipe.dir, newDir);
+      }
+    }
+
+    // Place straight piece at destination
+    this.placeSegment(nx, ny, getStraightChar(newDir), pipe.color, pipe.id);
+    pipe.dir = newDir;
+    pipe.x = nx;
+    pipe.y = ny;
+    return true;
+  }
+
+  // --- Interface Methods ---
+
+  beginExit(): void {
+    if (this.exiting) return;
+    this.exiting = true;
+
+    for (let i = 0; i < this.cols; i++) {
+      for (let j = 0; j < this.rows; j++) {
+        const cell = this.grid[i][j];
+        if (cell) {
+          setTimeout(() => {
+            cell.fadeOut = true;
+          }, Math.random() * 3000);
+        }
+      }
+    }
+  }
+
+  isExitComplete(): boolean {
+    if (!this.exiting) return false;
+    for (let i = 0; i < this.cols; i++) {
+      for (let j = 0; j < this.rows; j++) {
+        const cell = this.grid[i][j];
+        if (cell && cell.opacity > 0.01) return false;
+      }
+    }
+    return true;
+  }
+
+  cleanup(): void {
+    this.grid = [];
+    this.activePipes = [];
+  }
+
+  update(deltaTime: number): void {
+    const dt = deltaTime / (1000 / TARGET_FPS);
+    this.elapsed += deltaTime;
+
+    // Grow pipes
+    if (!this.exiting) {
+      this.growTimer += deltaTime;
+      while (this.growTimer >= GROW_INTERVAL) {
+        this.growTimer -= GROW_INTERVAL;
+
+        for (let i = this.activePipes.length - 1; i >= 0; i--) {
+          const pipe = this.activePipes[i];
+
+          if (pipe.spawnDelay > 0) {
+            pipe.spawnDelay -= GROW_INTERVAL;
+            continue;
+          }
+
+          // Place starting segment if this is the first step
+          if (!this.isOccupied(pipe.x, pipe.y)) {
+            this.placeSegment(pipe.x, pipe.y, getStraightChar(pipe.dir), pipe.color, pipe.id);
+            continue;
+          }
+
+          if (!this.growPipe(pipe)) {
+            // Pipe is dead, replace it
+            this.activePipes[i] = this.makeEdgePipe(0);
+          }
+        }
+      }
+    }
+
+    // Update cells: fade in/out, mouse influence
+    const mouseX = this.mouseX;
+    const mouseY = this.mouseY;
+
+    for (let i = 0; i < this.cols; i++) {
+      for (let j = 0; j < this.rows; j++) {
+        const cell = this.grid[i][j];
+        if (!cell) continue;
+
+        // Age-based fade: old segments start dissolving
+        if (!cell.fadeOut && !this.exiting && this.elapsed - cell.placedAt > PIPE_LIFETIME) {
+          cell.fadeOut = true;
+        }
+
+        // Fade in/out
+        if (cell.fadeOut) {
+          cell.opacity -= FADE_OUT_SPEED * dt;
+          if (cell.opacity <= 0) {
+            cell.opacity = 0;
+            this.grid[i][j] = null; // free the cell for new pipes
+            continue;
+          }
+        } else if (cell.opacity < 1) {
+          cell.opacity = Math.min(1, cell.opacity + FADE_IN_SPEED * dt);
+        }
+
+        // Mouse influence
+        const cx = this.offsetX + i * this.cellSize + this.cellSize / 2;
+        const cy = this.offsetY + j * this.cellSize + this.cellSize / 2;
+        const dx = cx - mouseX;
+        const dy = cy - mouseY;
+        const dist = Math.sqrt(dx * dx + dy * dy);
+
+        if (dist < MOUSE_INFLUENCE_RADIUS && cell.opacity > 0.1) {
+          const inf = Math.cos((dist / MOUSE_INFLUENCE_RADIUS) * (Math.PI / 2));
+          cell.targetElevation = ELEVATION_FACTOR * inf * inf;
+
+          const shift = inf * COLOR_SHIFT_AMOUNT * 0.5;
+          cell.color = [
+            Math.min(255, Math.max(0, cell.baseColor[0] + shift)),
+            Math.min(255, Math.max(0, cell.baseColor[1] + shift)),
+            Math.min(255, Math.max(0, cell.baseColor[2] + shift)),
+          ];
+        } else {
+          cell.targetElevation = 0;
+          cell.color[0] += (cell.baseColor[0] - cell.color[0]) * 0.1;
+          cell.color[1] += (cell.baseColor[1] - cell.color[1]) * 0.1;
+          cell.color[2] += (cell.baseColor[2] - cell.color[2]) * 0.1;
+        }
+
+        cell.elevation +=
+          (cell.targetElevation - cell.elevation) * ELEVATION_LERP_SPEED * dt;
+      }
+    }
+  }
+
+  render(
+    ctx: CanvasRenderingContext2D,
+    _width: number,
+    _height: number
+  ): void {
+    ctx.font = this.font;
+    ctx.textBaseline = "top";
+
+    for (let i = 0; i < this.cols; i++) {
+      for (let j = 0; j < this.rows; j++) {
+        const cell = this.grid[i][j];
+        if (!cell || cell.opacity <= 0.01) continue;
+
+        const x = this.offsetX + i * this.cellSize;
+        const y = this.offsetY + j * this.cellSize - cell.elevation;
+        const [r, g, b] = cell.color;
+
+        // Shadow
+        if (cell.elevation > 0.5) {
+          const shadowAlpha = 0.2 * (cell.elevation / ELEVATION_FACTOR) * cell.opacity;
+          ctx.globalAlpha = shadowAlpha;
+          ctx.fillStyle = "rgb(0,0,0)";
+          ctx.fillText(cell.char, x, y + cell.elevation * SHADOW_OFFSET_RATIO);
+        }
+
+        // Main
+        ctx.globalAlpha = cell.opacity;
+        ctx.fillStyle = `rgb(${r},${g},${b})`;
+        ctx.fillText(cell.char, x, y);
+
+        // Highlight
+        if (cell.elevation > 0.5) {
+          const highlightAlpha = 0.1 * (cell.elevation / ELEVATION_FACTOR) * cell.opacity;
+          ctx.globalAlpha = highlightAlpha;
+          ctx.fillStyle = "rgb(255,255,255)";
+          ctx.fillText(cell.char, x, y);
+        }
+      }
+    }
+
+    ctx.globalAlpha = 1;
+  }
+
+  handleResize(width: number, height: number): void {
+    this.width = width;
+    this.height = height;
+    this.elapsed = 0;
+    this.growTimer = 0;
+    this.exiting = false;
+    this.computeGrid();
+    this.spawnInitialPipes();
+  }
+
+  handleMouseMove(x: number, y: number, _isDown: boolean): void {
+    this.mouseX = x;
+    this.mouseY = y;
+  }
+
+  handleMouseDown(x: number, y: number): void {
+    if (this.exiting) return;
+
+    // Convert to grid coords
+    const gx = Math.floor((x - this.offsetX) / this.cellSize);
+    const gy = Math.floor((y - this.offsetY) / this.cellSize);
+
+    // Spawn pipes in all 4 directions from click point
+    for (let d = 0; d < BURST_PIPE_COUNT; d++) {
+      const dir = d as Dir;
+      const color = this.randomColor();
+      this.activePipes.push({
+        id: this.nextPipeId++,
+        x: gx,
+        y: gy,
+        dir,
+        color: [...color],
+        spawnDelay: 0,
+      });
+    }
+  }
+
+  handleMouseUp(): void {}
+
+  handleMouseLeave(): void {
+    this.mouseX = -1000;
+    this.mouseY = -1000;
+  }
+
+  updatePalette(palette: [number, number, number][], _bgColor: string): void {
+    this.palette = palette;
+    // Assign by pipeId so all segments of the same pipe get the same color
+    for (let i = 0; i < this.cols; i++) {
+      for (let j = 0; j < this.rows; j++) {
+        const cell = this.grid[i][j];
+        if (cell) {
+          cell.baseColor = palette[cell.pipeId % palette.length];
+        }
+      }
+    }
+  }
+}

src/src/components/background/engines/shuffle.ts

@@ -0,0 +1,207 @@
+import type { AnimationEngine } from "@/lib/animations/types";
+import { GameOfLifeEngine } from "./game-of-life";
+import { LavaLampEngine } from "./lava-lamp";
+import { ConfettiEngine } from "./confetti";
+import { AsciiquariumEngine } from "./asciiquarium";
+import { PipesEngine } from "./pipes";
+
+type ChildId = "game-of-life" | "lava-lamp" | "confetti" | "asciiquarium" | "pipes";
+
+const CHILD_IDS: ChildId[] = [
+  "game-of-life",
+  "lava-lamp",
+  "confetti",
+  "asciiquarium",
+  "pipes",
+];
+
+const PLAY_DURATION = 30_000;
+const STATE_KEY = "shuffle-state";
+
+interface StoredState {
+  childId: ChildId;
+  startedAt: number;
+}
+
+function createChild(id: ChildId): AnimationEngine {
+  switch (id) {
+    case "game-of-life":
+      return new GameOfLifeEngine();
+    case "lava-lamp":
+      return new LavaLampEngine();
+    case "confetti":
+      return new ConfettiEngine();
+    case "asciiquarium":
+      return new AsciiquariumEngine();
+    case "pipes":
+      return new PipesEngine();
+  }
+}
+
+function pickDifferent(current: ChildId | null): ChildId {
+  const others = current
+    ? CHILD_IDS.filter((id) => id !== current)
+    : CHILD_IDS;
+  return others[Math.floor(Math.random() * others.length)];
+}
+
+function save(state: StoredState): void {
+  try {
+    localStorage.setItem(STATE_KEY, JSON.stringify(state));
+  } catch {}
+}
+
+function load(): StoredState | null {
+  try {
+    const raw = localStorage.getItem(STATE_KEY);
+    if (!raw) return null;
+    const state = JSON.parse(raw) as StoredState;
+    if (CHILD_IDS.includes(state.childId)) return state;
+    return null;
+  } catch {
+    return null;
+  }
+}
+
+export class ShuffleEngine implements AnimationEngine {
+  id = "shuffle";
+  name = "Shuffle";
+
+  private child: AnimationEngine | null = null;
+  private currentChildId: ChildId | null = null;
+  private startedAt = 0;
+  private phase: "playing" | "exiting" = "playing";
+
+  private width = 0;
+  private height = 0;
+  private palette: [number, number, number][] = [];
+  private bgColor = "";
+
+  init(
+    width: number,
+    height: number,
+    palette: [number, number, number][],
+    bgColor: string
+  ): void {
+    this.width = width;
+    this.height = height;
+    this.palette = palette;
+    this.bgColor = bgColor;
+
+    const stored = load();
+
+    if (stored && Date.now() - stored.startedAt < PLAY_DURATION) {
+      // Animation still within its play window — continue it
+      // Covers: Astro nav, sidebar mount, layout switch, quick refresh
+      this.currentChildId = stored.childId;
+    } else {
+      // No recent state (first visit, hard refresh after timer expired) — game-of-life
+      this.currentChildId = "game-of-life";
+    }
+
+    this.startedAt = Date.now();
+
+    this.phase = "playing";
+    this.child = createChild(this.currentChildId);
+    this.child.init(this.width, this.height, this.palette, this.bgColor);
+    save({ childId: this.currentChildId, startedAt: this.startedAt });
+  }
+
+  private switchTo(childId: ChildId, startedAt: number): void {
+    if (this.child) this.child.cleanup();
+    this.currentChildId = childId;
+    this.startedAt = startedAt;
+    this.phase = "playing";
+    this.child = createChild(childId);
+    this.child.init(this.width, this.height, this.palette, this.bgColor);
+  }
+
+  private advance(): void {
+    // Check if another instance already advanced
+    const stored = load();
+    if (stored && stored.childId !== this.currentChildId) {
+      this.switchTo(stored.childId, stored.startedAt);
+    } else {
+      const next = pickDifferent(this.currentChildId);
+      const now = Date.now();
+      save({ childId: next, startedAt: now });
+      this.switchTo(next, now);
+    }
+  }
+
+  update(deltaTime: number): void {
+    if (!this.child) return;
+
+    // Sync: if another instance (sidebar, tab) switched, follow
+    const stored = load();
+    if (stored && stored.childId !== this.currentChildId) {
+      this.switchTo(stored.childId, stored.startedAt);
+      return;
+    }
+
+    this.child.update(deltaTime);
+
+    const elapsed = Date.now() - this.startedAt;
+
+    if (this.phase === "playing" && elapsed >= PLAY_DURATION) {
+      this.child.beginExit();
+      this.phase = "exiting";
+    }
+
+    if (this.phase === "exiting" && this.child.isExitComplete()) {
+      this.child.cleanup();
+      this.advance();
+    }
+  }
+
+  render(
+    ctx: CanvasRenderingContext2D,
+    width: number,
+    height: number
+  ): void {
+    if (this.child) this.child.render(ctx, width, height);
+  }
+
+  handleResize(width: number, height: number): void {
+    this.width = width;
+    this.height = height;
+    if (this.child) this.child.handleResize(width, height);
+  }
+
+  handleMouseMove(x: number, y: number, isDown: boolean): void {
+    if (this.child) this.child.handleMouseMove(x, y, isDown);
+  }
+
+  handleMouseDown(x: number, y: number): void {
+    if (this.child) this.child.handleMouseDown(x, y);
+  }
+
+  handleMouseUp(): void {
+    if (this.child) this.child.handleMouseUp();
+  }
+
+  handleMouseLeave(): void {
+    if (this.child) this.child.handleMouseLeave();
+  }
+
+  updatePalette(palette: [number, number, number][], bgColor: string): void {
+    this.palette = palette;
+    this.bgColor = bgColor;
+    if (this.child) this.child.updatePalette(palette, bgColor);
+  }
+
+  beginExit(): void {
+    if (this.child) this.child.beginExit();
+  }
+
+  isExitComplete(): boolean {
+    return this.child ? this.child.isExitComplete() : true;
+  }
+
+  cleanup(): void {
+    if (this.child) {
+      this.child.cleanup();
+      this.child = null;
+    }
+  }
+}

src/src/components/background/index.tsx

@@ -2,6 +2,9 @@ import { useEffect, useRef } from "react";
 import { GameOfLifeEngine } from "./engines/game-of-life";
 import { LavaLampEngine } from "./engines/lava-lamp";
 import { ConfettiEngine } from "./engines/confetti";
+import { AsciiquariumEngine } from "./engines/asciiquarium";
+import { PipesEngine } from "./engines/pipes";
+import { ShuffleEngine } from "./engines/shuffle";
 import { getStoredAnimationId } from "@/lib/animations/engine";
 import type { AnimationEngine } from "@/lib/animations/types";
 import type { AnimationId } from "@/lib/animations";
@@ -11,6 +14,8 @@ const SIDEBAR_WIDTH = 240;
 const FALLBACK_PALETTE: [number, number, number][] = [
   [204, 36, 29], [152, 151, 26], [215, 153, 33],
   [69, 133, 136], [177, 98, 134], [104, 157, 106],
+  [251, 73, 52], [184, 187, 38], [250, 189, 47],
+  [131, 165, 152], [211, 134, 155], [142, 192, 124],
 ];
 
 function createEngine(id: AnimationId): AnimationEngine {
@@ -19,6 +24,12 @@ function createEngine(id: AnimationId): AnimationEngine {
       return new LavaLampEngine();
     case "confetti":
       return new ConfettiEngine();
+    case "asciiquarium":
+      return new AsciiquariumEngine();
+    case "pipes":
+      return new PipesEngine();
+    case "shuffle":
+      return new ShuffleEngine();
     case "game-of-life":
     default:
       return new GameOfLifeEngine();
@@ -31,6 +42,8 @@ function readPaletteFromCSS(): [number, number, number][] {
     const keys = [
       "--color-red", "--color-green", "--color-yellow",
       "--color-blue", "--color-purple", "--color-aqua",
+      "--color-red-bright", "--color-green-bright", "--color-yellow-bright",
+      "--color-blue-bright", "--color-purple-bright", "--color-aqua-bright",
     ];
     const palette: [number, number, number][] = [];
     for (const key of keys) {
@@ -140,11 +153,21 @@ const Background: React.FC<BackgroundProps> = ({
       signal,
     });
 
-    // Handle theme changes
+    // Handle theme changes — only update if palette actually changed
+    let currentPalette = palette;
     const handleThemeChanged = () => {
       const newPalette = readPaletteFromCSS();
       const newBg = readBgFromCSS();
-      if (engineRef.current) {
+      const same =
+        newPalette.length === currentPalette.length &&
+        newPalette.every(
+          (c, i) =>
+            c[0] === currentPalette[i][0] &&
+            c[1] === currentPalette[i][1] &&
+            c[2] === currentPalette[i][2]
+        );
+      if (!same && engineRef.current) {
+        currentPalette = newPalette;
         engineRef.current.updatePalette(newPalette, newBg);
       }
     };
@@ -183,7 +206,7 @@ const Background: React.FC<BackgroundProps> = ({
 
       // Don't spawn when clicking interactive elements
       const target = e.target as HTMLElement;
-      if (target.closest("a, button, [role='button'], input, select, textarea, [onclick]")) return;
+      if (target.closest("a, button, [role='button'], input, select, textarea, label, [onclick], [tabindex]")) return;
 
       const rect = canvas.getBoundingClientRect();
       const mouseX = e.clientX - rect.left;
@@ -324,6 +347,8 @@ const Background: React.FC<BackgroundProps> = ({
         style={{ cursor: "default" }}
       />
       <div className="absolute inset-0 bg-background/30 backdrop-blur-sm pointer-events-none" />
+      <div className="crt-scanlines absolute inset-0 pointer-events-none" />
+      <div className="crt-bloom absolute inset-0 pointer-events-none" />
     </div>
   );
 };

src/src/components/theme-switcher/index.tsx

@@ -11,7 +11,7 @@ const LABELS: Record<string, string> = {
 
 export default function ThemeSwitcher() {
   const [hovering, setHovering] = useState(false);
-  const [nextLabel, setNextLabel] = useState("");
+  const [currentLabel, setCurrentLabel] = useState("");
 
   const maskRef = useRef<HTMLDivElement>(null);
   const animatingRef = useRef(false);
@@ -19,13 +19,13 @@ export default function ThemeSwitcher() {
 
   useEffect(() => {
     committedRef.current = getStoredThemeId();
-    setNextLabel(LABELS[getNextTheme(committedRef.current).id] ?? "");
+    setCurrentLabel(LABELS[committedRef.current] ?? "");
 
     const handleSwap = () => {
       const id = getStoredThemeId();
       applyTheme(id);
       committedRef.current = id;
-      setNextLabel(LABELS[getNextTheme(id).id] ?? "");
+      setCurrentLabel(LABELS[id] ?? "");
     };
 
     document.addEventListener("astro:after-swap", handleSwap);
@@ -54,7 +54,7 @@ export default function ThemeSwitcher() {
     const next = getNextTheme(committedRef.current);
     applyTheme(next.id);
     committedRef.current = next.id;
-    setNextLabel(LABELS[getNextTheme(next.id).id] ?? "");
+    setCurrentLabel(LABELS[next.id] ?? "");
 
     mask.offsetHeight;
 
@@ -84,7 +84,7 @@ export default function ThemeSwitcher() {
           className="text-foreground font-bold text-sm select-none transition-opacity duration-200"
           style={{ opacity: hovering ? 0.8 : 0.15 }}
         >
-          {nextLabel}
+          {currentLabel}
         </span>
       </div>
 

src/src/lib/animations/index.ts

@@ -1,9 +1,12 @@
-export const ANIMATION_IDS = ["game-of-life", "lava-lamp", "confetti"] as const;
+export const ANIMATION_IDS = ["shuffle", "game-of-life", "lava-lamp", "confetti", "asciiquarium", "pipes"] as const;
 export type AnimationId = (typeof ANIMATION_IDS)[number];
-export const DEFAULT_ANIMATION_ID: AnimationId = "game-of-life";
+export const DEFAULT_ANIMATION_ID: AnimationId = "shuffle";
 
 export const ANIMATION_LABELS: Record<AnimationId, string> = {
+  "shuffle": "shuffle",
   "game-of-life": "life",
   "lava-lamp": "lava",
   "confetti": "confetti",
+  "asciiquarium": "aquarium",
+  "pipes": "pipes",
 };

src/src/lib/animations/types.ts

@@ -29,5 +29,9 @@ export interface AnimationEngine {
 
   updatePalette(palette: [number, number, number][], bgColor: string): void;
 
+  beginExit(): void;
+
+  isExitComplete(): boolean;
+
   cleanup(): void;
 }

src/src/lib/themes/engine.ts

@@ -27,6 +27,7 @@ export function previewTheme(id: string): void {
     root.style.setProperty(prop, theme.colors[key]);
   }
 
+
   document.dispatchEvent(new CustomEvent("theme-changed", { detail: { id } }));
 }
 
@@ -55,5 +56,6 @@ export function applyTheme(id: string): void {
   el.textContent = css;
 
   saveTheme(id);
+
   document.dispatchEvent(new CustomEvent("theme-changed", { detail: { id } }));
 }

src/src/style/globals.css

@@ -37,6 +37,37 @@
     @apply bg-purple/50
   }
 }
+/* CRT overlay — canvas only */
+.crt-scanlines {
+  background: repeating-linear-gradient(
+    to bottom,
+    transparent 0px,
+    transparent 2px,
+    rgba(0, 0, 0, 0.12) 2px,
+    rgba(0, 0, 0, 0.12) 4px
+  );
+  animation: crt-scroll 12s linear infinite;
+  z-index: 1;
+}
+
+.crt-bloom {
+  box-shadow: inset 0 0 100px 30px rgba(0, 0, 0, 0.3);
+  background: radial-gradient(
+    ellipse at center,
+    transparent 50%,
+    rgba(0, 0, 0, 0.25) 100%
+  );
+  z-index: 2;
+}
+
+@keyframes crt-scroll {
+  0% {
+    background-position: 0 0;
+  }
+  100% {
+    background-position: 0 200px;
+  }
+}
 
 /* Regular */
 @font-face {