/**
 * DKU Floating Shortcut Button 前端样式。
 */

.fsb-floating-button {
	position: fixed;
	height: var(--fsb-desktop-size, 64px);
	z-index: var(--fsb-z-index, 9999);
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 8px;
	text-decoration: none;
	line-height: 1;
	transform: translateZ(0);
	transition: transform 180ms ease, opacity 180ms ease;
	-webkit-tap-highlight-color: transparent;
}

.fsb-floating-button:hover,
.fsb-floating-button:focus-visible {
	transform: translateY(-2px) scale(1.04);
	outline: none;
}

.fsb-floating-button:focus-visible {
	outline: none;
}

.fsb-floating-button__label {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-height: calc(var(--fsb-desktop-size, 64px) * 0.56);
	max-width: min(260px, calc(100vw - 32px));
	padding: 0 10px;
	border-radius: 6px;
	background: #ffffff;
	box-shadow: 0 8px 22px rgba(15, 23, 42, 0.18);
	color: #111827;
	font-size: 14px;
	font-weight: 600;
	line-height: 1.2;
	text-align: center;
}

.fsb-floating-button__icon {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: var(--fsb-desktop-size, 64px);
	height: var(--fsb-desktop-size, 64px);
	overflow: hidden;
	border-radius: 999px;
	background: #ffffff;
	box-shadow: 0 10px 28px rgba(15, 23, 42, 0.22);
	transition: box-shadow 180ms ease;
}

.fsb-floating-button:hover .fsb-floating-button__icon,
.fsb-floating-button:focus-visible .fsb-floating-button__icon {
	box-shadow: 0 16px 34px rgba(15, 23, 42, 0.28);
}

.fsb-floating-button:focus-visible .fsb-floating-button__icon {
	box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.3), 0 16px 34px rgba(15, 23, 42, 0.28);
}

.fsb-floating-button__image {
	display: block;
	width: 100%;
	height: 100%;
	object-fit: cover;
	border-radius: inherit;
}

.fsb-floating-button__fallback {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 100%;
	height: 100%;
	color: #111827;
	font-size: calc(var(--fsb-desktop-size, 64px) * 0.42);
	font-weight: 700;
}

.fsb-position-left-top {
	top: var(--fsb-desktop-offset, 24px);
	left: var(--fsb-desktop-offset, 24px);
}

.fsb-position-right-top {
	top: var(--fsb-desktop-offset, 24px);
	right: var(--fsb-right-offset, var(--fsb-desktop-offset, 24px));
}

.fsb-position-left-bottom {
	bottom: var(--fsb-bottom-offset, var(--fsb-desktop-offset, 24px));
	left: var(--fsb-desktop-offset, 24px);
}

.fsb-position-right-bottom {
	right: var(--fsb-right-offset, var(--fsb-desktop-offset, 24px));
	bottom: var(--fsb-bottom-offset, var(--fsb-desktop-offset, 24px));
}

.fsb-animation-pulse .fsb-floating-button__icon {
	animation: fsb-pulse 2.4s ease-in-out infinite;
}

.fsb-animation-bounce {
	animation: fsb-bounce 2.2s ease-in-out infinite;
}

.fsb-animation-scale {
	animation: fsb-scale 2.1s ease-in-out infinite;
}

@keyframes fsb-pulse {
	0%,
	100% {
		box-shadow: 0 10px 28px rgba(15, 23, 42, 0.22), 0 0 0 0 rgba(37, 99, 235, 0.22);
	}

	50% {
		box-shadow: 0 10px 28px rgba(15, 23, 42, 0.22), 0 0 0 12px rgba(37, 99, 235, 0);
	}
}

@keyframes fsb-bounce {
	0%,
	100% {
		transform: translateY(0);
	}

	50% {
		transform: translateY(-8px);
	}
}

@keyframes fsb-scale {
	0%,
	100% {
		transform: scale(1);
	}

	50% {
		transform: scale(1.08);
	}
}

@media (prefers-reduced-motion: reduce) {
	.fsb-floating-button {
		animation: none;
		transition: none;
	}
}

@media (max-width: 767px) {
	.fsb-floating-button {
		height: var(--fsb-mobile-size, 54px);
	}

	.fsb-floating-button__label {
		min-height: calc(var(--fsb-mobile-size, 54px) * 0.56);
		max-width: min(190px, calc(100vw - 32px));
		padding: 0 8px;
		font-size: 13px;
	}

	.fsb-floating-button__icon {
		width: var(--fsb-mobile-size, 54px);
		height: var(--fsb-mobile-size, 54px);
	}

	.fsb-floating-button__fallback {
		font-size: calc(var(--fsb-mobile-size, 54px) * 0.42);
	}

	.fsb-position-left-top {
		top: var(--fsb-mobile-offset, 16px);
		left: var(--fsb-mobile-offset, 16px);
	}

	.fsb-position-right-top {
		top: var(--fsb-mobile-offset, 16px);
		right: var(--fsb-right-offset, var(--fsb-mobile-offset, 16px));
	}

	.fsb-position-left-bottom {
		bottom: var(--fsb-bottom-offset, var(--fsb-mobile-offset, 16px));
		left: var(--fsb-mobile-offset, 16px);
	}

	.fsb-position-right-bottom {
		right: var(--fsb-right-offset, var(--fsb-mobile-offset, 16px));
		bottom: var(--fsb-bottom-offset, var(--fsb-mobile-offset, 16px));
	}

	.fsb-hide-mobile {
		display: none !important;
	}
}

@media (min-width: 768px) {
	.fsb-hide-desktop {
		display: none !important;
	}
}