.imb-substack-popup {
	--imb-popup-background: var(--wp--preset--color--surface, #fff);
	--imb-popup-border: var(--wp--preset--color--border, #35323d);
	--imb-popup-text: var(--wp--preset--color--text, #17131f);

	inset: auto max(1rem, env(safe-area-inset-right)) max(1rem, env(safe-area-inset-bottom)) auto;
	width: min(32rem, calc(100% - 2rem));
	max-width: none;
	max-height: calc(100dvh - 2rem);
	padding: 3.25rem 0.75rem 0.75rem;
	margin: 0;
	overflow: auto;
	border: 0.0625rem solid var(--imb-popup-border);
	border-radius: 0.5rem;
	background: var(--imb-popup-background);
	box-shadow: 0 1rem 3rem rgb(0 0 0 / 30%);
	color: var(--imb-popup-text);
}

.imb-substack-popup::backdrop {
	background: rgb(0 0 0 / 42%);
}

.imb-substack-popup__close {
	position: absolute;
	top: 0.45rem;
	right: 0.45rem;
	display: inline-flex;
	width: 2.75rem;
	height: 2.75rem;
	align-items: center;
	justify-content: center;
	padding: 0;
	border: 0.0625rem solid transparent;
	border-radius: 50%;
	background: transparent;
	color: var(--imb-popup-text);
	cursor: pointer;
	font: inherit;
	font-size: 2rem;
	line-height: 1;
}

.imb-substack-popup__close:hover {
	border-color: currentcolor;
}

.imb-substack-popup__close:focus {
	outline: 0.1875rem solid currentcolor;
	outline-offset: 0.125rem;
}

.imb-substack-popup__frame {
	display: block;
	width: 100%;
	max-width: 100%;
	height: 320px;
	border: 0.0625rem solid #eee;
	background: #fff;
}

@media (width <= 35rem) {
	.imb-substack-popup {
		inset: auto max(0.5rem, env(safe-area-inset-right)) max(0.5rem, env(safe-area-inset-bottom)) max(0.5rem, env(safe-area-inset-left));
		width: auto;
		max-height: calc(100dvh - 1rem);
	}
}