*, *::before, *::after {
  box-sizing: border-box;
}

body {
  font-family: system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  margin: 0;
  background: #f0fdf4;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 20px;
}

.eco-card {
  background: #ffffff;
  padding: 40px;
  border-radius: 24px;
  box-shadow: 0 20px 40px -10px rgba(16, 185, 129, 0.15);
  width: 100%;
  max-width: 380px;
  text-align: center;
  border: 1px solid #d1fae5;
}

.eco-icon {
  width: 80px;
  height: 80px;
  background: #d1fae5;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0 auto 24px auto;
  box-shadow: 0 10px 20px rgba(16, 185, 129, 0.2);
}

#eco-leaf {
  transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.eco-data {
  margin-bottom: 30px;
}

.eco-value {
  font-size: 3.5rem;
  font-weight: 800;
  color: #064e3b;
  line-height: 1;
  letter-spacing: -1px;
  display: flex;
  justify-content: center;
  align-items: baseline;
  gap: 8px;
}

.unit {
  font-size: 1.5rem;
  color: #10b981;
  font-weight: 600;
}

.eco-label {
  color: #047857;
  font-weight: 600;
  font-size: 1.125rem;
  margin-top: 8px;
}

.eco-progress-bar {
  width: 100%;
  height: 12px;
  background: #e2e8f0;
  border-radius: 6px;
  overflow: hidden;
  margin-bottom: 24px;
}

.eco-progress-fill {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, #34d399, #059669);
  border-radius: 6px;
  transition: width 2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.eco-fact {
  color: #475569;
  font-size: 0.95rem;
  margin: 0;
  padding: 16px;
  background: #f8fafc;
  border-radius: 12px;
}

.eco-fact strong {
  color: #059669;
}

const counter = document.getElementById("co2-counter");
const fill = document.getElementById("eco-fill");
const leaf = document.getElementById("eco-leaf");

const targetValue = 42.8;
const duration = 2000;
const frameRate = 30;
const totalFrames = duration / frameRate;
const increment = targetValue / totalFrames;

let currentVal = 0;
let frame = 0;

setTimeout(function() {
  fill.style.width = "75%";
  leaf.style.transform = "scale(1.2) rotate(10deg)";
  
  const timer = setInterval(function() {
    frame++;
    currentVal += increment;
    
    if (frame >= totalFrames) {
      currentVal = targetValue;
      clearInterval(timer);
      leaf.style.transform = "scale(1) rotate(0deg)";
    }
    
    // Format to 1 decimal place safely
    counter.innerText = currentVal.toFixed(1);
    
  }, frameRate);
  
}, 500);