/**
 * OMT Sidebar — floating side buttons.
 * --omt-sb-size / --omt-sb-gap are set on the nav, --omt-sb-color / --omt-sb-bg per button.
 */

.omt-sb {
	--omt-sb-size: 46px;
	--omt-sb-gap: 6px;
	--omt-sb-radius: 8px;
	--omt-sb-label-radius: 8px;
	--omt-sb-shadow: 0 2px 10px rgba(0, 0, 0, .18);
	position: fixed;
	z-index: 9990;
	display: flex;
	flex-direction: column;
	gap: var(--omt-sb-gap);
	line-height: 1;
}

.omt-sb.shape-square {
	--omt-sb-radius: 0;
	--omt-sb-label-radius: 0;
}

.omt-sb.shape-circle {
	--omt-sb-radius: 50%;
	--omt-sb-label-radius: 999px;
}

/* Scroll reveal: hidden until the inline script adds .is-shown. Hiding in CSS
   rather than JS keeps the bar from flashing on load. */
.omt-sb.after-scroll {
	opacity: 0;
	visibility: hidden;
	transition: opacity .25s ease, visibility .25s;
}

.omt-sb.after-scroll.is-shown {
	opacity: 1;
	visibility: visible;
}

/* Position. */
.omt-sb.is-left-top,
.omt-sb.is-left-center,
.omt-sb.is-left-lower,
.omt-sb.is-left-bottom {
	left: 0;
}

.omt-sb.is-right-top,
.omt-sb.is-right-center,
.omt-sb.is-right-lower,
.omt-sb.is-right-bottom {
	right: 0;
}

.omt-sb.is-left-top,
.omt-sb.is-right-top {
	top: 0;
}

.omt-sb.is-left-bottom,
.omt-sb.is-right-bottom {
	bottom: 0;
}

.omt-sb.is-left-center,
.omt-sb.is-right-center {
	top: 50%;
	transform: translateY(-50%);
}

/* Lower: midway between centre and bottom. Anchored to the bottom rather than
   top:75% so a tall stack grows upwards and can never run off the screen. */
.omt-sb.is-left-lower,
.omt-sb.is-right-lower {
	bottom: 12.5%;
}

/* Button. */
.omt-sb .omt-sb-btn {
	position: relative;
	display: flex;
	align-items: center;
	justify-content: center;
	box-sizing: border-box;
	width: var(--omt-sb-size);
	height: var(--omt-sb-size);
	border-radius: var(--omt-sb-radius);
	background: var(--omt-sb-bg, #222);
	color: var(--omt-sb-color, #fff);
	box-shadow: var(--omt-sb-shadow);
	text-decoration: none;
	transition: filter .2s ease;
}

.omt-sb .omt-sb-btn:hover,
.omt-sb .omt-sb-btn:focus,
.omt-sb .omt-sb-btn:focus-visible {
	color: var(--omt-sb-color, #fff);
	filter: brightness(1.15);
	text-decoration: none;
}

.omt-sb .omt-sb-icon {
	display: flex;
	align-items: center;
	justify-content: center;
	width: 1em;
	height: 1em;
	font-size: calc(var(--omt-sb-size) * .48);
	font-style: normal;
}

/* Dashicons sets its own 20px box; scale it with the button instead. */
.omt-sb .omt-sb-icon.dashicons {
	width: 1em;
	height: 1em;
	line-height: 1;
}

/* Label. Absolute so it can overhang the viewport edge without moving the icon. */
.omt-sb .omt-sb-label {
	position: absolute;
	top: 0;
	display: flex;
	align-items: center;
	height: var(--omt-sb-size);
	padding: 0 14px;
	border-radius: var(--omt-sb-label-radius);
	background: var(--omt-sb-bg, #222);
	color: var(--omt-sb-color, #fff);
	box-shadow: var(--omt-sb-shadow);
	font-size: calc(var(--omt-sb-size) * .32);
	white-space: nowrap;
	pointer-events: none;
	opacity: 0;
	visibility: hidden;
	transition: opacity .2s ease, transform .2s ease, visibility .2s;
}

.omt-sb.is-right .omt-sb-label {
	right: 100%;
	margin-right: var(--omt-sb-gap);
	transform: translateX(8px);
}

.omt-sb.is-left .omt-sb-label {
	left: 100%;
	margin-left: var(--omt-sb-gap);
	transform: translateX(-8px);
}

.omt-sb .omt-sb-btn:hover .omt-sb-label,
.omt-sb .omt-sb-btn:focus .omt-sb-label,
.omt-sb .omt-sb-btn:focus-visible .omt-sb-label,
.omt-sb.labels-always .omt-sb-label {
	opacity: 1;
	visibility: visible;
	transform: none;
}

@media (prefers-reduced-motion: reduce) {
	.omt-sb,
	.omt-sb .omt-sb-btn,
	.omt-sb .omt-sb-label {
		transition: none;
	}
}

@media print {
	.omt-sb {
		display: none;
	}
}