/* ここはレイアウトなのでボタンとは関係ない */
* {
  margin: 0;
}

.layout {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  gap: 50px;
  width: 100%;
  height: 100vh;
}

/* ここからボタンのCSS */
.button {
	a {
		position: relative;
		display: block;
		width: 240px;
		height: 50px;
		font-size: 16px;
		text-decoration: none;
		color: #5cc0ef;
		border: 1px solid #5cc0ef;
		overflow: hidden;
		transition: all 0.3s;

		&::before {
			transform: translate(-100%, -100%);
		}

		&::after {
			transform: translate(100%, -100%);
		}

		span {
			position: relative;
			z-index: 1;
			display: flex;
			justify-content: center;
			align-items: center;
			width: 100%;
			height: 100%;

			&::before {
				transform: translate(100%, 100%);
			}

			&::after {
				transform: translate(-100%, 100%);
			}
		}

		&::before,
		&::after,
		span::before,
		span::after {
			content: "";
			position: absolute;
			z-index: -1;
			top: 0;
			right: 0;
			bottom: 0;
			left: 0;
			width: 100%;
			height: 100%;
			background-color: #5cc0ef;
			transition: all 0.3s;
		}

		&:hover {
			color: #fff;

			&::before {
				transform: translate(-50%, -50%);
			}

			&::after {
				transform: translate(50%, -50%);
			}

			span {
				&::before {
					transform: translate(50%, 50%);
				}

				&::after {
					transform: translate(-50%, 50%);
				}
			}
		}
	}
}