.mbwsb {
	position: fixed;
	bottom: max(1rem, env(safe-area-inset-bottom));
	z-index: 99990;
	font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
	font-size: 1rem;
	line-height: 1.4;
	-webkit-tap-highlight-color: transparent;
}

.mbwsb--left {
	left: max(1rem, env(safe-area-inset-left));
	right: auto;
}

.mbwsb--right {
	right: max(1rem, env(safe-area-inset-right));
	left: auto;
}

.mbwsb__trigger {
	display: flex;
	align-items: center;
	justify-content: center;
	width: 3.5rem;
	height: 3.5rem;
	padding: 0;
	border: 0;
	border-radius: 50%;
	background: #25d366;
	color: #fff;
	box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
	cursor: pointer;
	transition: transform 0.15s ease, box-shadow 0.15s ease;
	text-decoration: none;
	box-sizing: border-box;
}

a.mbwsb__trigger {
	-webkit-appearance: none;
	appearance: none;
}

.mbwsb__trigger:hover,
.mbwsb__trigger:focus-visible {
	transform: scale(1.05);
	box-shadow: 0 6px 18px rgba(0, 0, 0, 0.3);
	outline: 2px solid #fff;
	outline-offset: 2px;
}

.mbwsb__trigger-icon {
	display: flex;
	line-height: 0;
}

.mbwsb__panel {
	position: absolute;
	bottom: calc(100% + 0.5rem);
	min-width: min(18rem, calc(100vw - 2rem));
	max-width: min(22rem, calc(100vw - 2rem));
	background: #fff;
	color: #111;
	border-radius: 0.75rem;
	box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
	overflow: hidden;
	opacity: 0;
	visibility: hidden;
	transform: translateY(6px);
	transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
	pointer-events: none;
}

.mbwsb--left .mbwsb__panel {
	left: 0;
	right: auto;
}

.mbwsb--right .mbwsb__panel {
	right: 0;
	left: auto;
}

.mbwsb__panel.is-open {
	opacity: 1;
	visibility: visible;
	transform: translateY(0);
	pointer-events: auto;
}

.mbwsb__list {
	list-style: none;
	margin: 0;
	padding: 0.35rem 0;
}

.mbwsb__item {
	margin: 0;
}

.mbwsb__link {
	display: block;
	padding: 0.65rem 1rem;
	color: #111;
	text-decoration: none;
	font-weight: 500;
	border: 0;
	background: transparent;
	width: 100%;
	text-align: left;
	cursor: pointer;
	font: inherit;
}

.mbwsb__link:hover,
.mbwsb__link:focus-visible {
	background: #f0f2f5;
	outline: none;
}

.mbwsb__link:focus-visible {
	box-shadow: inset 0 0 0 2px #25d366;
}

@media (max-width: 480px) {
	.mbwsb__panel {
		min-width: calc(100vw - 2rem);
	}
}