*, *::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";
  background: #f9fafb;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  margin: 0;
  padding: 20px;
}

.gauge-card {
  background: #ffffff;
  padding: 30px;
  border-radius: 16px;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  text-align: center;
  width: 100%;
  max-width: 350px;
}

.gauge-card h3 {
  margin: 0 0 24px 0;
  color: #111827;
}

.gauge-wrapper {
  position: relative;
  width: 100%;
  margin-bottom: 24px;
}

.gauge-svg {
  width: 100%;
  height: auto;
  overflow: visible;
}

.gauge-fill {
  stroke-dasharray: 126;
  stroke-dashoffset: 126;
  transition: stroke-dashoffset 1s cubic-bezier(0.4, 0, 0.2, 1), stroke 1s ease;
}

.gauge-center {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.gauge-text {
  font-size: 2.5rem;
  font-weight: 700;
  color: #111827;
  line-height: 1;
}

.gauge-label {
  color: #6b7280;
  font-weight: 500;
  margin-top: 4px;
}

.update-btn {
  background: #f3f4f6;
  color: #374151;
  border: none;
  padding: 10px 20px;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

.update-btn:hover {
  background: #e5e7eb;
}

const gaugeFill = document.getElementById("gauge-fill");
const gaugeText = document.getElementById("gauge-text");
const updateBtn = document.getElementById("update-gauge");

// Total length of the SVG path is approx 126
const pathLength = 126;

function setGauge(percentage) {
  // Calculate how much of the stroke to offset
  const offset = pathLength - (percentage / 100) * pathLength;
  gaugeFill.style.strokeDashoffset = offset;
  
  // Animate the numbers going up
  let currentVal = parseInt(gaugeText.innerText);
  const diff = percentage - currentVal;
  const steps = 30;
  let step = 0;
  
  const counter = setInterval(function() {
    step++;
    const newVal = Math.round(currentVal + (diff * (step / steps)));
    gaugeText.innerText = newVal + "%";
    
    if (step >= steps) {
      clearInterval(counter);
    }
  }, 30);
  
  // Change color based on severity
  if (percentage > 85) {
    gaugeFill.style.stroke = "#ef4444";
  } else if (percentage > 60) {
    gaugeFill.style.stroke = "#f59e0b";
  } else {
    gaugeFill.style.stroke = "#3b82f6";
  }
}

// Initial animation
setTimeout(function() {
  setGauge(65);
}, 500);

updateBtn.addEventListener("click", function() {
  const randomValue = Math.floor(Math.random() * 100);
  setGauge(randomValue);
});