Models 44

Gemini 3.8 Flash

by GoogleReasoningClean
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Running live in a sandboxed frame. Click inside it before using the keyboard.

How it went

Total time
1 min 1 s
Cost
$0.046
Output tokens
12,099
Spent thinking
570 tokens
Speed
204.3 tok/s
Console errors
0
First token after
2.3 s
First visible text after
6.9 s
Prompt tokens
362
Code size
27.4 KB
Finish reason
stop
Served by
Google
Model id
google/gemini-3.8-flash
Reasoning sent
model default
Max output
65,536 tokens
Generated
Nov 12, 2026

What it was asked

The prompt
“a "like" button in pure CSS, no JavaScript, that does a crazy animation when you click it”
System prompt, sent with every prompt
You are generating a self-contained web demo. It will be rendered automatically in a sandboxed iframe and compared side by side with the output of other AI models given the exact same task.

Output rules:
- Reply with exactly ONE fenced code block containing the complete file: ```html (or ```svg when the task asks for an SVG). No text before or after the code block.
- Everything must be inline: CSS in <style>, JavaScript in <script>. No external files, images, fonts or network requests, except the CDN URLs explicitly allowed by the task.
- Do not use localStorage, sessionStorage, cookies, IndexedDB, alert(), confirm(), prompt() or window.open(): they are blocked in the sandbox and will throw.
- The page must look right in a 1280×800 viewport and adapt gracefully down to 375px wide. No horizontal scrollbar.
- Something meaningful must be visible on first paint: a screenshot is taken automatically about 3 seconds after load, without any interaction.
- Everything that makes the demo interesting must be visible within the first seconds: nothing hidden behind a high score, a later level or a long play session.
- Games must start in a self-playing demo mode (a simple AI plays) behind a "Click or press a key to start" message, so the game can be judged in action without playing.
- The iframe only receives keyboard events after the user clicks it: if the demo uses the keyboard, display a clear "Click or press a key to start" message.
- The code must run with zero errors in the console of the latest Chrome.

Code run-1.html · 881 lines

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Pure CSS Crazy Like Button</title>
  <style>
    *, *::before, *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      user-select: none;
      -webkit-user-select: none;
    }

    :root {
      --bg-dark: #0a0a14;
      --card-bg: rgba(22, 22, 38, 0.75);
      --heart-start: #ff2a6d;
      --heart-mid: #ff6200;
      --heart-end: #ff007b;
      --gold: #ffd166;
      --cyan: #05d9e8;
      --purple: #b5179e;
      --lime: #00f5d4;
    }

    body {
      min-height: 100vh;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      background: radial-gradient(circle at 50% 30%, #201135 0%, var(--bg-dark) 70%);
      font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
      overflow: hidden;
      position: relative;
    }

    /* Ambient background floating orbs */
    .ambient-glow {
      position: absolute;
      width: 500px;
      height: 500px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(255, 42, 109, 0.18) 0%, transparent 65%);
      filter: blur(40px);
      pointer-events: none;
      animation: floatAmbient 12s ease-in-out infinite alternate;
      z-index: 0;
    }
    .ambient-glow-2 {
      position: absolute;
      width: 400px;
      height: 400px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(5, 217, 232, 0.12) 0%, transparent 70%);
      filter: blur(50px);
      pointer-events: none;
      animation: floatAmbient 10s ease-in-out infinite alternate-reverse;
      top: 60%;
      left: 60%;
      z-index: 0;
    }

    @keyframes floatAmbient {
      0% { transform: translate(-30px, -20px) scale(0.9); }
      100% { transform: translate(40px, 30px) scale(1.15); }
    }

    /* Interactive Showcase Card */
    .card {
      position: relative;
      z-index: 1;
      background: var(--card-bg);
      backdrop-filter: blur(25px);
      -webkit-backdrop-filter: blur(25px);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: 36px;
      padding: 48px 56px;
      box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6),
                  inset 0 1px 1px rgba(255, 255, 255, 0.2);
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 28px;
      max-width: 90vw;
    }

    .card-header {
      text-align: center;
    }

    .badge {
      display: inline-block;
      font-size: 11px;
      font-weight: 800;
      letter-spacing: 2px;
      text-transform: uppercase;
      color: var(--cyan);
      background: rgba(5, 217, 232, 0.12);
      border: 1px solid rgba(5, 217, 232, 0.3);
      padding: 6px 14px;
      border-radius: 999px;
      margin-bottom: 12px;
    }

    .title {
      color: #ffffff;
      font-size: 26px;
      font-weight: 700;
      letter-spacing: -0.5px;
    }

    .subtitle {
      color: rgba(255, 255, 255, 0.6);
      font-size: 14px;
      margin-top: 4px;
    }

    /* Hidden State Controller */
    #like-toggle {
      position: absolute;
      opacity: 0;
      width: 0;
      height: 0;
      pointer-events: none;
    }

    /* Interactive Like Button Wrapper */
    .btn-wrap {
      position: relative;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 40px;
    }

    .like-label {
      cursor: pointer;
      position: relative;
      display: flex;
      align-items: center;
      gap: 16px;
      padding: 18px 36px 18px 28px;
      background: linear-gradient(135deg, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0.02) 100%);
      border: 1.5px solid rgba(255, 255, 255, 0.16);
      border-radius: 100px;
      box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4),
                  inset 0 1px 1px rgba(255, 255, 255, 0.25);
      transition: all 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275);
      transform-origin: center center;
    }

    .like-label:hover {
      transform: translateY(-2px) scale(1.03);
      border-color: rgba(255, 42, 109, 0.45);
      box-shadow: 0 20px 45px rgba(255, 42, 109, 0.2),
                  inset 0 1px 2px rgba(255, 255, 255, 0.4);
    }

    .like-label:active {
      transform: scale(0.94);
    }

    /* Heart Graphic Area */
    .heart-stage {
      position: relative;
      width: 48px;
      height: 48px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .heart-icon {
      width: 42px;
      height: 42px;
      position: relative;
      z-index: 10;
      transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
    }

    .heart-icon svg {
      width: 100%;
      height: 100%;
      overflow: visible;
      filter: drop-shadow(0 4px 10px rgba(0,0,0,0.3));
    }

    /* Default Outline Heart */
    .heart-outline {
      fill: none;
      stroke: rgba(255, 255, 255, 0.65);
      stroke-width: 2.2;
      stroke-linecap: round;
      stroke-linejoin: round;
      transition: all 0.3s ease;
    }

    .heart-fill {
      fill: url(#heartGradient);
      opacity: 0;
      transform-origin: 50% 50%;
      transform: scale(0);
      transition: all 0.3s ease;
    }

    /* Label text & counter */
    .label-content {
      display: flex;
      flex-direction: column;
      position: relative;
      z-index: 10;
    }

    .action-text {
      font-size: 17px;
      font-weight: 700;
      letter-spacing: 0.3px;
      color: #ffffff;
      transition: color 0.3s ease;
      line-height: 1.1;
    }

    .counter-box {
      font-size: 13px;
      font-weight: 600;
      color: rgba(255, 255, 255, 0.5);
      margin-top: 3px;
      height: 16px;
      overflow: hidden;
      position: relative;
    }

    .counter-slider {
      display: flex;
      flex-direction: column;
      transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    }

    .counter-item {
      height: 16px;
      line-height: 16px;
    }

    /* Floating +1 Pop Badge */
    .plus-one {
      position: absolute;
      top: -12px;
      right: 28px;
      background: linear-gradient(135deg, var(--heart-start), var(--heart-mid));
      color: #ffffff;
      font-size: 13px;
      font-weight: 800;
      padding: 4px 10px;
      border-radius: 999px;
      opacity: 0;
      transform: translateY(12px) scale(0.4);
      pointer-events: none;
      box-shadow: 0 4px 15px rgba(255, 42, 109, 0.6);
      z-index: 20;
    }

    /* ================================================= */
    /* CRAZY ANIMATION ELEMENTS (STAGED AROUND THE HEART) */
    /* ================================================= */

    /* Expanding Shockwave Rings */
    .ring {
      position: absolute;
      border-radius: 50%;
      pointer-events: none;
      opacity: 0;
      box-sizing: border-box;
    }

    .ring-main {
      width: 48px;
      height: 48px;
      border: 4px solid var(--heart-start);
      top: 0;
      left: 0;
    }

    .ring-secondary {
      width: 48px;
      height: 48px;
      border: 3px solid var(--cyan);
      top: 0;
      left: 0;
    }

    /* Radial Light Rays / Spike Starburst */
    .spark-burst {
      position: absolute;
      width: 180px;
      height: 180px;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%) scale(0);
      pointer-events: none;
      opacity: 0;
      z-index: 8;
    }

    .ray {
      position: absolute;
      top: 50%;
      left: 50%;
      width: 4px;
      height: 24px;
      margin-left: -2px;
      border-radius: 4px;
      transform-origin: center -20px;
      background: linear-gradient(to top, transparent, var(--gold));
    }
    .ray:nth-child(1) { transform: rotate(0deg) translateY(-42px); }
    .ray:nth-child(2) { transform: rotate(45deg) translateY(-42px); }
    .ray:nth-child(3) { transform: rotate(90deg) translateY(-42px); }
    .ray:nth-child(4) { transform: rotate(135deg) translateY(-42px); }
    .ray:nth-child(5) { transform: rotate(180deg) translateY(-42px); }
    .ray:nth-child(6) { transform: rotate(225deg) translateY(-42px); }
    .ray:nth-child(7) { transform: rotate(270deg) translateY(-42px); }
    .ray:nth-child(8) { transform: rotate(315deg) translateY(-42px); }

    /* Flying Particle Confetti (Circles, Stars, Ribbons) */
    .confetti-layer {
      position: absolute;
      width: 0;
      height: 0;
      top: 50%;
      left: 50%;
      pointer-events: none;
      z-index: 25;
    }

    .p {
      position: absolute;
      opacity: 0;
      pointer-events: none;
    }

    /* Particle specific styles */
    .dot-1  { width: 10px; height: 10px; border-radius: 50%; background: var(--heart-start); }
    .dot-2  { width: 8px;  height: 8px;  border-radius: 50%; background: var(--gold); }
    .dot-3  { width: 12px; height: 12px; border-radius: 50%; background: var(--cyan); }
    .dot-4  { width: 7px;  height: 7px;  border-radius: 50%; background: var(--lime); }
    .dot-5  { width: 9px;  height: 9px;  border-radius: 50%; background: var(--purple); }
    .dot-6  { width: 11px; height: 11px; border-radius: 50%; background: #ffffff; }

    .star-1 {
      width: 14px;
      height: 14px;
      background: var(--gold);
      clip-path: polygon(50% 0%, 61% 35%, 98% 35%, 68% 57%, 79% 91%, 50% 70%, 21% 91%, 32% 57%, 2% 35%, 39% 35%);
    }
    .star-2 {
      width: 12px;
      height: 12px;
      background: var(--cyan);
      clip-path: polygon(50% 0%, 61% 35%, 98% 35%, 68% 57%, 79% 91%, 50% 70%, 21% 91%, 32% 57%, 2% 35%, 39% 35%);
    }

    .ribbon-1 { width: 5px; height: 16px; border-radius: 3px; background: var(--heart-mid); }
    .ribbon-2 { width: 4px; height: 14px; border-radius: 3px; background: var(--lime); }
    .ribbon-3 { width: 5px; height: 18px; border-radius: 3px; background: var(--purple); }

    /* Flying Mini-Hearts */
    .mini-heart {
      position: absolute;
      width: 16px;
      height: 16px;
      opacity: 0;
      pointer-events: none;
      fill: var(--heart-start);
      z-index: 15;
    }

    /* Ambient Core Flash Flare */
    .flare {
      position: absolute;
      width: 140px;
      height: 140px;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%) scale(0);
      background: radial-gradient(circle, rgba(255, 42, 109, 0.9) 0%, rgba(255, 98, 0, 0.5) 40%, transparent 70%);
      border-radius: 50%;
      opacity: 0;
      pointer-events: none;
      z-index: 5;
    }

    /* ================================================= */
    /* :CHECKED - THE CRAZY TRIGGER                      */
    /* ================================================= */

    /* Active Label Glowing Shell & Squish / Slam Animation */
    #like-toggle:checked + .like-label {
      background: linear-gradient(135deg, rgba(255, 42, 109, 0.18) 0%, rgba(255, 0, 123, 0.05) 100%);
      border-color: rgba(255, 42, 109, 0.8);
      box-shadow: 0 10px 40px rgba(255, 42, 109, 0.4),
                  inset 0 1px 2px rgba(255, 255, 255, 0.4);
      animation: btnCrazyBounce 0.75s cubic-bezier(0.175, 0.885, 0.32, 1.4);
    }

    @keyframes btnCrazyBounce {
      0%   { transform: scale(1); }
      15%  { transform: scale(0.85) translateY(4px); }
      35%  { transform: scale(1.12) translateY(-6px); }
      55%  { transform: scale(0.96) translateY(2px); }
      75%  { transform: scale(1.03) translateY(-1px); }
      100% { transform: scale(1) translateY(0); }
    }

    /* Icon Swapping & Elastic 3D Heart Explosion */
    #like-toggle:checked + .like-label .heart-outline {
      opacity: 0;
      transform: scale(0);
    }

    #like-toggle:checked + .like-label .heart-fill {
      opacity: 1;
      animation: heartWildPop 0.85s cubic-bezier(0.175, 0.885, 0.32, 1.6) forwards;
    }

    @keyframes heartWildPop {
      0% {
        transform: scale(0) rotate(-45deg);
        filter: brightness(2.5) drop-shadow(0 0 25px #ffffff);
      }
      25% {
        transform: scale(1.55) rotate(15deg);
        filter: brightness(1.8) drop-shadow(0 0 20px var(--heart-start));
      }
      45% {
        transform: scale(0.85) rotate(-10deg);
      }
      65% {
        transform: scale(1.2) rotate(5deg);
        filter: drop-shadow(0 8px 18px rgba(255, 42, 109, 0.8));
      }
      85% {
        transform: scale(0.95) rotate(-2deg);
      }
      100% {
        transform: scale(1) rotate(0deg);
        filter: drop-shadow(0 6px 16px rgba(255, 42, 109, 0.7));
      }
    }

    /* Text Shift */
    #like-toggle:checked + .like-label .action-text {
      color: #ff2a6d;
      text-shadow: 0 0 15px rgba(255, 42, 109, 0.5);
    }

    #like-toggle:checked + .like-label .counter-slider {
      transform: translateY(-16px);
    }

    /* Floating +1 Badge Ejection */
    #like-toggle:checked + .like-label .plus-one {
      animation: plusOnePop 1s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
    }

    @keyframes plusOnePop {
      0% {
        opacity: 0;
        transform: translateY(10px) scale(0.3);
      }
      20% {
        opacity: 1;
        transform: translateY(-18px) scale(1.2) rotate(-8deg);
      }
      40% {
        transform: translateY(-28px) scale(1) rotate(4deg);
      }
      75% {
        opacity: 1;
        transform: translateY(-40px) scale(0.95);
      }
      100% {
        opacity: 0;
        transform: translateY(-58px) scale(0.7);
      }
    }

    /* Flare Blast */
    #like-toggle:checked + .like-label .flare {
      animation: flareBlast 0.6s cubic-bezier(0.1, 0.9, 0.2, 1) forwards;
    }

    @keyframes flareBlast {
      0% { opacity: 0; transform: translate(-50%, -50%) scale(0.1); }
      30% { opacity: 1; }
      100% { opacity: 0; transform: translate(-50%, -50%) scale(1.6); }
    }

    /* Expanding Shockwaves */
    #like-toggle:checked + .like-label .ring-main {
      animation: ringExplode 0.75s cubic-bezier(0.1, 0.8, 0.3, 1) forwards;
    }
    #like-toggle:checked + .like-label .ring-secondary {
      animation: ringExplode 0.85s 0.08s cubic-bezier(0.1, 0.8, 0.3, 1) forwards;
    }

    @keyframes ringExplode {
      0% {
        opacity: 1;
        transform: scale(0.3);
        border-width: 6px;
      }
      70% {
        opacity: 0.8;
      }
      100% {
        opacity: 0;
        transform: scale(3.2);
        border-width: 1px;
      }
    }

    /* Sparkle Starburst Rays */
    #like-toggle:checked + .like-label .spark-burst {
      animation: raysBurst 0.65s cubic-bezier(0.1, 0.85, 0.25, 1) forwards;
    }

    @keyframes raysBurst {
      0% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.2) rotate(0deg);
      }
      30% {
        opacity: 1;
      }
      100% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(1.5) rotate(45deg);
      }
    }

    /* ============================================= */
    /* CRAZY RADIAL CONFETTI FLIGHT PATHS            */
    /* ============================================= */
    #like-toggle:checked + .like-label .p {
      animation-duration: 0.9s;
      animation-timing-function: cubic-bezier(0.15, 0.9, 0.25, 1);
      animation-fill-mode: forwards;
    }

    /* Top Left Group */
    #like-toggle:checked + .like-label .p1  { animation-name: fly-p1; }
    #like-toggle:checked + .like-label .p2  { animation-name: fly-p2; }
    #like-toggle:checked + .like-label .p3  { animation-name: fly-p3; }
    /* Top Right Group */
    #like-toggle:checked + .like-label .p4  { animation-name: fly-p4; }
    #like-toggle:checked + .like-label .p5  { animation-name: fly-p5; }
    #like-toggle:checked + .like-label .p6  { animation-name: fly-p6; }
    /* Bottom Left Group */
    #like-toggle:checked + .like-label .p7  { animation-name: fly-p7; }
    #like-toggle:checked + .like-label .p8  { animation-name: fly-p8; }
    #like-toggle:checked + .like-label .p9  { animation-name: fly-p9; }
    /* Bottom Right Group */
    #like-toggle:checked + .like-label .p10 { animation-name: fly-p10; }
    #like-toggle:checked + .like-label .p11 { animation-name: fly-p11; }
    #like-toggle:checked + .like-label .p12 { animation-name: fly-p12; }
    /* Outer Orbitals */
    #like-toggle:checked + .like-label .p13 { animation-name: fly-p13; }
    #like-toggle:checked + .like-label .p14 { animation-name: fly-p14; }
    #like-toggle:checked + .like-label .p15 { animation-name: fly-p15; }
    #like-toggle:checked + .like-label .p16 { animation-name: fly-p16; }

    @keyframes fly-p1 {
      0%   { opacity: 1; transform: translate(0, 0) scale(0.2) rotate(0deg); }
      70%  { opacity: 1; }
      100% { opacity: 0; transform: translate(-75px, -85px) scale(1.1) rotate(260deg); }
    }
    @keyframes fly-p2 {
      0%   { opacity: 1; transform: translate(0, 0) scale(0.2) rotate(0deg); }
      70%  { opacity: 1; }
      100% { opacity: 0; transform: translate(-45px, -115px) scale(1.2) rotate(-190deg); }
    }
    @keyframes fly-p3 {
      0%   { opacity: 1; transform: translate(0, 0) scale(0.2) rotate(0deg); }
      70%  { opacity: 1; }
      100% { opacity: 0; transform: translate(-105px, -45px) scale(0.9) rotate(320deg); }
    }

    @keyframes fly-p4 {
      0%   { opacity: 1; transform: translate(0, 0) scale(0.2) rotate(0deg); }
      70%  { opacity: 1; }
      100% { opacity: 0; transform: translate(65px, -95px) scale(1.3) rotate(210deg); }
    }
    @keyframes fly-p5 {
      0%   { opacity: 1; transform: translate(0, 0) scale(0.2) rotate(0deg); }
      70%  { opacity: 1; }
      100% { opacity: 0; transform: translate(35px, -120px) scale(1) rotate(-310deg); }
    }
    @keyframes fly-p6 {
      0%   { opacity: 1; transform: translate(0, 0) scale(0.2) rotate(0deg); }
      70%  { opacity: 1; }
      100% { opacity: 0; transform: translate(110px, -60px) scale(1.2) rotate(180deg); }
    }

    @keyframes fly-p7 {
      0%   { opacity: 1; transform: translate(0, 0) scale(0.2) rotate(0deg); }
      70%  { opacity: 1; }
      100% { opacity: 0; transform: translate(-90px, 45px) scale(1.1) rotate(-220deg); }
    }
    @keyframes fly-p8 {
      0%   { opacity: 1; transform: translate(0, 0) scale(0.2) rotate(0deg); }
      70%  { opacity: 1; }
      100% { opacity: 0; transform: translate(-65px, 85px) scale(1.3) rotate(270deg); }
    }
    @keyframes fly-p9 {
      0%   { opacity: 1; transform: translate(0, 0) scale(0.2) rotate(0deg); }
      70%  { opacity: 1; }
      100% { opacity: 0; transform: translate(-30px, 105px) scale(0.9) rotate(-160deg); }
    }

    @keyframes fly-p10 {
      0%   { opacity: 1; transform: translate(0, 0) scale(0.2) rotate(0deg); }
      70%  { opacity: 1; }
      100% { opacity: 0; transform: translate(95px, 40px) scale(1.2) rotate(340deg); }
    }
    @keyframes fly-p11 {
      0%   { opacity: 1; transform: translate(0, 0) scale(0.2) rotate(0deg); }
      70%  { opacity: 1; }
      100% { opacity: 0; transform: translate(60px, 90px) scale(1.1) rotate(-280deg); }
    }
    @keyframes fly-p12 {
      0%   { opacity: 1; transform: translate(0, 0) scale(0.2) rotate(0deg); }
      70%  { opacity: 1; }
      100% { opacity: 0; transform: translate(25px, 115px) scale(1) rotate(190deg); }
    }

    @keyframes fly-p13 {
      0%   { opacity: 1; transform: translate(0, 0) scale(0.2); }
      60%  { opacity: 1; }
      100% { opacity: 0; transform: translate(-125px, 0px) scale(1.4) rotate(420deg); }
    }
    @keyframes fly-p14 {
      0%   { opacity: 1; transform: translate(0, 0) scale(0.2); }
      60%  { opacity: 1; }
      100% { opacity: 0; transform: translate(130px, 10px) scale(1.2) rotate(-400deg); }
    }
    @keyframes fly-p15 {
      0%   { opacity: 1; transform: translate(0, 0) scale(0.2); }
      60%  { opacity: 1; }
      100% { opacity: 0; transform: translate(0px, -135px) scale(1.4) rotate(360deg); }
    }
    @keyframes fly-p16 {
      0%   { opacity: 1; transform: translate(0, 0) scale(0.2); }
      60%  { opacity: 1; }
      100% { opacity: 0; transform: translate(0px, 125px) scale(1.2) rotate(-360deg); }
    }

    /* ============================================= */
    /* MINI FLOATING HEARTS (RISING WITH SWAY)       */
    /* ============================================= */
    #like-toggle:checked + .like-label .mh1 {
      animation: floatMiniHeart1 1.2s cubic-bezier(0.12, 0.75, 0.35, 1) forwards;
    }
    #like-toggle:checked + .like-label .mh2 {
      animation: floatMiniHeart2 1.35s 0.05s cubic-bezier(0.12, 0.75, 0.35, 1) forwards;
    }
    #like-toggle:checked + .like-label .mh3 {
      animation: floatMiniHeart3 1.15s 0.08s cubic-bezier(0.12, 0.75, 0.35, 1) forwards;
    }
    #like-toggle:checked + .like-label .mh4 {
      animation: floatMiniHeart4 1.4s 0.12s cubic-bezier(0.12, 0.75, 0.35, 1) forwards;
    }

    @keyframes floatMiniHeart1 {
      0% {
        opacity: 0;
        transform: translate(0, 0) scale(0.3) rotate(0deg);
      }
      20% {
        opacity: 1;
      }
      50% {
        transform: translate(-30px, -60px) scale(1.2) rotate(-18deg);
      }
      100% {
        opacity: 0;
        transform: translate(-45px, -140px) scale(0.8) rotate(-35deg);
      }
    }

    @keyframes floatMiniHeart2 {
      0% {
        opacity: 0;
        transform: translate(0, 0) scale(0.3) rotate(0deg);
      }
      20% {
        opacity: 1;
      }
      50% {
        transform: translate(32px, -70px) scale(1.3) rotate(16deg);
      }
      100% {
        opacity: 0;
        transform: translate(50px, -155px) scale(0.7) rotate(30deg);
      }
    }

    @keyframes floatMiniHeart3 {
      0% {
        opacity: 0;
        transform: translate(0, 0) scale(0.3) rotate(0deg);
      }
      20% {
        opacity: 1;
      }
      50% {
        transform: translate(-10px, -80px) scale(1) rotate(-10deg);
      }
      100% {
        opacity: 0;
        transform: translate(-18px, -170px) scale(0.6) rotate(15deg);
      }
    }

    @keyframes floatMiniHeart4 {
      0% {
        opacity: 0;
        transform: translate(0, 0) scale(0.3) rotate(0deg);
      }
      20% {
        opacity: 1;
      }
      50% {
        transform: translate(15px, -55px) scale(1.1) rotate(12deg);
      }
      100% {
        opacity: 0;
        transform: translate(25px, -135px) scale(0.7) rotate(-22deg);
      }
    }

    /* Instructions & Footnote */
    .hint {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      color: rgba(255, 255, 255, 0.4);
      background: rgba(255, 255, 255, 0.04);
      border: 1px dashed rgba(255, 255, 255, 0.15);
      padding: 8px 18px;
      border-radius: 100px;
    }

    .hint svg {
      width: 14px;
      height: 14px;
      fill: currentColor;
    }

    /* Subtle Idle Pulse on Heart before click */
    @keyframes idleHeartbeat {
      0%, 100% { transform: scale(1); }
      14% { transform: scale(1.08); }
      28% { transform: scale(1); }
      42% { transform: scale(1.05); }
      70% { transform: scale(1); }
    }

    #like-toggle:not(:checked) + .like-label .heart-icon {
      animation: idleHeartbeat 2.8s ease-in-out infinite;
    }
  </style>
</head>
<body>

  <div class="ambient-glow"></div>
  <div class="ambient-glow-2"></div>

  <main class="card">
    <header class="card-header">
      <span class="badge">100% Pure CSS • No JS</span>
      <h1 class="title">Insane Like Experience</h1>
      <p class="subtitle">Click the heart button to unleash the fireworks</p>
    </header>

    <div class="btn-wrap">
      <!-- Pure CSS Checkbox state mechanism -->
      <input type="checkbox" id="like-toggle" aria-label="Toggle Like">

      <label for="like-toggle" class="like-label">
        <!-- Core Flash Light Burst -->
        <span class="flare"></span>

        <!-- Shockwave Expansion Rings -->
        <span class="ring ring-main"></span>
        <span class="ring ring-secondary"></span>

        <!-- Radial Spike Light Rays -->
        <div class="spark-burst">
          <span class="ray"></span>
          <span class="ray"></span>
          <span class="ray"></span>
          <span class="ray"></span>
          <span class="ray"></span>
          <span class="ray"></span>
          <span class="ray"></span>
          <span class="ray"></span>
        </div>

        <!-- Confetti Particles Layer -->
        <div class="confetti-layer">
          <span class="p p1 dot-1"></span>
          <span class="p p2 star-1"></span>
          <span class="p p3 ribbon-1"></span>
          <span class="p p4 dot-3"></span>
          <span class="p p5 ribbon-2"></span>
          <span class="p p6 star-2"></span>
          <span class="p p7 dot-2"></span>
          <span class="p p8 ribbon-3"></span>
          <span class="p p9 dot-5"></span>
          <span class="p p10 star-1"></span>
          <span class="p p11 dot-4"></span>
          <span class="p p12 ribbon-1"></span>
          <span class="p p13 dot-6"></span>
          <span class="p p14 star-2"></span>
          <span class="p p15 dot-1"></span>
          <span class="p p16 ribbon-2"></span>
        </div>

        <!-- Flying Floating Mini Hearts -->
        <svg class="mini-heart mh1" viewBox="0 0 24 24"><path d="M12 21.35l-1.45-1.32C5.4 15.36 2 12.28 2 8.5 2 5.42 4.42 3 7.5 3c1.74 0 3.41.81 4.5 2.09C13.09 3.81 14.76 3 16.5 3 19.58 3 22 5.42 22 8.5c0 3.78-3.4 6.86-8.55 11.54L12 21.35z"/></svg>
        <svg class="mini-heart mh2" viewBox="0 0 24 24"><path d="M12 21.35l-1.45-1.32C5.4 15.36 2 12.28 2 8.5 2 5.42 4.42 3 7.5 3c1.74 0 3.41.81 4.5 2.09C13.09 3.81 14.76 3 16.5 3 19.58 3 22 5.42 22 8.5c0 3.78-3.4 6.86-8.55 11.54L12 21.35z"/></svg>
        <svg class="mini-heart mh3" viewBox="0 0 24 24"><path d="M12 21.35l-1.45-1.32C5.4 15.36 2 12.28 2 8.5 2 5.42 4.42 3 7.5 3c1.74 0 3.41.81 4.5 2.09C13.09 3.81 14.76 3 16.5 3 19.58 3 22 5.42 22 8.5c0 3.78-3.4 6.86-8.55 11.54L12 21.35z"/></svg>
        <svg class="mini-heart mh4" viewBox="0 0 24 24"><path d="M12 21.35l-1.45-1.32C5.4 15.36 2 12.28 2 8.5 2 5.42 4.42 3 7.5 3c1.74 0 3.41.81 4.5 2.09C13.09 3.81 14.76 3 16.5 3 19.58 3 22 5.42 22 8.5c0 3.78-3.4 6.86-8.55 11.54L12 21.35z"/></svg>

        <!-- Floating +1 Counter Popup -->
        <span class="plus-one">+1</span>

        <!-- Main Heart SVG Stage -->
        <div class="heart-stage">
          <div class="heart-icon">
            <svg viewBox="0 0 24 24">
              <defs>
                <linearGradient id="heartGradient" x1="0%" y1="0%" x2="100%" y2="100%">
                  <stop offset="0%" stop-color="#ff2a6d" />
                  <stop offset="50%" stop-color="#ff6200" />
                  <stop offset="100%" stop-color="#ff007b" />
                </linearGradient>
              </defs>
              <!-- Static Outline Path -->
              <path class="heart-outline" d="M12 21.35l-1.45-1.32C5.4 15.36 2 12.28 2 8.5 2 5.42 4.42 3 7.5 3c1.74 0 3.41.81 4.5 2.09C13.09 3.81 14.76 3 16.5 3 19.58 3 22 5.42 22 8.5c0 3.78-3.4 6.86-8.55 11.54L12 21.35z"/>
              <!-- Vibrant Filled Heart Path -->
              <path class="heart-fill" d="M12 21.35l-1.45-1.32C5.4 15.36 2 12.28 2 8.5 2 5.42 4.42 3 7.5 3c1.74 0 3.41.81 4.5 2.09C13.09 3.81 14.76 3 16.5 3 19.58 3 22 5.42 22 8.5c0 3.78-3.4 6.86-8.55 11.54L12 21.35z"/>
            </svg>
          </div>
        </div>

        <!-- Button Labels & Dynamic Number -->
        <div class="label-content">
          <span class="action-text">Like</span>
          <div class="counter-box">
            <div class="counter-slider">
              <span class="counter-item">14,289</span>
              <span class="counter-item">14,290</span>
            </div>
          </div>
        </div>
      </label>
    </div>

    <footer class="hint">
      <svg viewBox="0 0 24 24"><path d="M11 18h2v-2h-2v2zm1-16C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm0 18c-4.41 0-8-3.59-8-8s3.59-8 8-8 8 3.59 8 8-3.59 8-8 8zm0-14c-2.21 0-4 1.79-4 4h2c0-1.1.9-2 2-2s2 .9 2 2c0 2-3 1.75-3 5h2c0-2.25 3-2.5 3-5 0-2.21-1.79-4-4-4z"/></svg>
      <span>Toggle anytime to experience the burst again</span>
    </footer>
  </main>

</body>
</html>
Reasoning trace (570 tokens)
**Crafting CSS Animation**

I'm exploring how to achieve a dynamic "like" button using only CSS. The core idea is to leverage the `:checked` pseudo-class on a hidden checkbox, controlled by a visible label, to trigger elaborate animations. I'm currently experimenting with different keyframe sequences for a truly explosive and elastic visual feedback on click.

**Designing an Animated Like Button**

I'm deep into refining the visual flair for this CSS-only like button. My current focus is on the intricate particle and confetti burst, aiming for a dynamic, physics-inspired flutter for the mini-hearts. I'm also perfecting the ring shockwave and the haptic squish/bounce effect for immediate tactile feedback, all while ensuring it's beautifully styled with a 3D glassmorphic aesthetic.