.btns {
  display: flex;
  gap: 13px;
  padding: 50px;
}
.ripple-btn {
  font-family: system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  position: relative;
  overflow: hidden;
  transition: background 400ms;
  color: #fff;
  background-color: #3b82f6;
  padding: 12px 24px;
  font-size: 1rem;
  outline: 0;
  border: 0;
  border-radius: 8px;
  cursor: pointer;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  font-weight: 500;
}
.ripple-btn.dark {
  background-color: #1f2937;
}
.ripple-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}
span.ripple {
  position: absolute;
  border-radius: 50%;
  transform: scale(0);
  animation: ripple 600ms linear;
  background-color: rgba(255, 255, 255, 0.3);
}
@keyframes ripple {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

const buttons = document.querySelectorAll(".ripple-btn");

buttons.forEach((button) => {
  button.addEventListener("click", function (e) {
    const circle = document.createElement("span");
    const diameter = Math.max(button.clientWidth, button.clientHeight);
    const radius = diameter / 2;

    circle.style.width = circle.style.height = `${diameter}px`;
    circle.style.left = `${e.clientX - button.getBoundingClientRect().left - radius}px`;
    circle.style.top = `${e.clientY - button.getBoundingClientRect().top - radius}px`;
    circle.classList.add("ripple");

    const ripple = button.getElementsByClassName("ripple")[0];

    if (ripple) {
      ripple.remove();
    }

    button.appendChild(circle);
  });
});