html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(to bottom, #f7cac9, #92a8d1);
  color: #ffffff;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
}

#countdown {
  background: rgba(0, 0, 0, 0.5);
  padding: 20px 40px;
  border-radius: 10px;
  box-shadow: 0px 4px 15px rgba(0, 0, 0, 0.2);
  text-align: center;
  font-size: 24px;
}

#countdown p {
  font-size: 28px;
  font-weight: bold;
  margin-bottom: 10px;
  color: #ffeb3b;
}

#countdown span {
  font-size: 36px;
  font-weight: bold;
  display: inline-block;
  margin: 0 5px;
  color: #ffffff;
}

#birthday-message {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 48px;
  font-weight: bold;
  text-align: center;
  color: #ffe082;
  opacity: 0.9;
}

canvas {
  position: fixed;
  top: 0;
  left: 0;
  z-index: -1;
  pointer-events: none;
}