:root {
	/* color type A */
	--dark_custom_button_line_color: #000000;
	--dark_custom_button_back_color: #ffecf6;

	/* color type B */
	/* --line_color: #1b1919;
	--back_color: #e9ecff; */

	/* color type C */
	/* --line_color: #00135c;
	--back_color: #defffa; */
}

.dark_custom_button {
	position: relative;
	z-index: 0;
	width: 260px;
	height: 56px;
	text-decoration: none;
	font-size: 14px;
	font-weight: bold;
	color: var(--dark_custom_button_line_color);
	letter-spacing: 2px;
	transition: all 0.3s ease;
}
.dark_button__text {
	display: flex;
	justify-content: center;
	align-items: center;
	width: 100%;
	height: 100%;
}
.dark_custom_button::before,
.dark_custom_button::after,
.dark_button__text::before,
.dark_button__text::after {
	content: "";
	position: absolute;
	height: 3px;
	border-radius: 2px;
	background: var(--dark_custom_button_line_color);
	transition: all 0.5s ease;
}
.dark_custom_button::before {
	top: 0;
	left: 54px;
	width: calc(100% - 56px * 2 - 16px);
}
.dark_custom_button::after {
	top: 0;
	right: 54px;
	width: 8px;
}
.dark_button__text::before {
	bottom: 0;
	right: 54px;
	width: calc(100% - 56px * 2 - 16px);
}
.dark_button__text::after {
	bottom: 0;
	left: 54px;
	width: 8px;
}
.dark_button__line {
	position: absolute;
	top: 0;
	width: 56px;
	height: 100%;
	overflow: hidden;
}
.dark_button__line::before {
	content: "";
	position: absolute;
	top: 0;
	width: 150%;
	height: 100%;
	box-sizing: border-box;
	border-radius: 300px;
	border: solid 3px var(--dark_custom_button_line_color);
}
.dark_button__line:nth-child(1),
.dark_button__line:nth-child(1)::before {
	left: 0;
}
.dark_button__line:nth-child(2),
.dark_button__line:nth-child(2)::before {
	right: 0;
}
.dark_custom_button:hover {
	letter-spacing: 2.5px;
	/* color: var(--nerd-green); */
}
.dark_custom_button:hover::before,
.dark_custom_button:hover .dark_button__text::before {
	width: 8px;
}
.dark_custom_button:hover::after,
.dark_custom_button:hover .dark_button__text::after {
	width: calc(100% - 56px * 2 - 16px);
}