/**
 * TT Social — front end.
 *
 * Tokens follow the same scale as the admin UI: 8px rhythm, 1px hairlines,
 * neutral ink, brand colour reserved for accents and hover states.
 */

.tts-sprite {
	position: absolute !important;
	width: 0 !important;
	height: 0 !important;
	overflow: hidden !important;
	pointer-events: none !important;
}

.tts-ico {
	display: block;
	fill: currentColor;
	shape-rendering: geometricPrecision;
}

/* ------------------------------------------------------------------ login */

.tts-login {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
	margin: 16px 0;
	align-items: center;
}

.tts-login__btn {
	--tts-brand: #141618;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 8px;
	box-sizing: border-box;
	width: 36px;
	height: 36px;
	padding: 0;
	border: 1px solid #e6e6e6;
	border-radius: 50%;
	background: #fff;
	color: #141618;
	text-decoration: none;
	line-height: 1;
	transition: background-color .16s ease, border-color .16s ease, color .16s ease, transform .16s ease;
	-webkit-tap-highlight-color: transparent;
}

.tts-login__btn:hover,
.tts-login__btn:focus-visible {
	border-color: var(--tts-brand);
	background: var(--tts-brand);
	color: #fff;
}

.tts-login__btn:focus-visible {
	outline: 2px solid rgba(20, 22, 24, .2);
	outline-offset: 2px;
}

.tts-login__btn:active {
	transform: scale(.96);
}

.tts-login--labels .tts-login__btn {
	width: auto;
	min-width: 36px;
	padding: 0 14px;
	border-radius: 18px;
}

.tts-login__label {
	font-size: 13px;
	font-weight: 500;
	letter-spacing: .01em;
	white-space: nowrap;
}

/* solid */
.tts-login--solid .tts-login__btn {
	border-color: var(--tts-brand);
	background: var(--tts-brand);
	color: #fff;
}

.tts-login--solid .tts-login__btn:hover,
.tts-login--solid .tts-login__btn:focus-visible {
	filter: brightness(.92);
}

/* plain */
.tts-login--plain .tts-login__btn {
	border-color: transparent;
	background: transparent;
	border-radius: 8px;
	color: var(--tts-brand);
}

.tts-login--plain .tts-login__btn:hover,
.tts-login--plain .tts-login__btn:focus-visible {
	background: #f5f5f7;
	color: var(--tts-brand);
	border-color: transparent;
}

/* ------------------------------------------------------------------ share */

.tts-share {
	display: flex;
	align-items: center;
	gap: 6px;
	margin: 24px 0;
	color: inherit;
}

.tts-share__title {
	font-size: 13px;
	color: #6b7280;
	margin-right: 4px;
}

.tts-share__btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 6px;
	box-sizing: border-box;
	width: 36px;
	height: 36px;
	border: 0;
	border-radius: 10px;
	background: transparent;
	color: inherit;
	text-decoration: none;
	cursor: pointer;
	opacity: .72;
	transition: background-color .16s ease, opacity .16s ease, color .16s ease;
	-webkit-tap-highlight-color: transparent;
}

.tts-share__btn:hover,
.tts-share__btn:focus-visible {
	background: rgba(20, 22, 24, .06);
	opacity: 1;
	outline: none;
}

.tts-share__btn:focus-visible {
	box-shadow: 0 0 0 2px rgba(20, 22, 24, .18);
}

.tts-share--labels .tts-share__btn {
	width: auto;
	padding: 0 12px;
}

.tts-share__label {
	font-size: 13px;
}

.tts-share--vertical {
	flex-direction: column;
	align-items: flex-start;
}

.tts-share--float {
	position: fixed;
	left: 16px;
	top: 50%;
	transform: translateY(-50%);
	flex-direction: column;
	z-index: 40;
}

@media (max-width: 782px) {
	.tts-login__btn,
	.tts-share__btn {
		width: 40px;
		height: 40px;
	}

	.tts-share--float {
		display: none;
	}
}

/* Toast used by the copy action */
.tts-toast {
	position: fixed;
	left: 50%;
	bottom: 24px;
	transform: translateX(-50%) translateY(8px);
	padding: 10px 16px;
	border-radius: 10px;
	background: #141618;
	color: #fff;
	font-size: 13px;
	line-height: 1;
	opacity: 0;
	pointer-events: none;
	transition: opacity .2s ease, transform .2s ease;
	z-index: 9999;
}

.tts-toast.is-visible {
	opacity: 1;
	transform: translateX(-50%) translateY(0);
}

/* ------------------------------------------------------------------ 深色 */

@media (prefers-color-scheme: dark) {
	.tts-login__btn {
		border-color: rgba(255, 255, 255, .18);
		background: rgba(255, 255, 255, .04);
		color: #f2f3f5;
	}

	.tts-login--plain .tts-login__btn {
		color: #f2f3f5;
	}

	.tts-login--plain .tts-login__btn:hover,
	.tts-login--plain .tts-login__btn:focus-visible {
		background: rgba(255, 255, 255, .08);
	}

	.tts-share__btn:hover,
	.tts-share__btn:focus-visible {
		background: rgba(255, 255, 255, .10);
	}

	.tts-share__title {
		color: rgba(255, 255, 255, .55);
	}

	.tts-toast {
		background: #f2f3f5;
		color: #141618;
	}
}

/* 深色区域（页脚、深色头部）内使用时手动加 .tts-on-dark */
.tts-on-dark .tts-login__btn,
.tts-on-dark .tts-share__btn {
	border-color: rgba(255, 255, 255, .22);
	background: transparent;
	color: #fff;
}

.tts-on-dark .tts-login__btn:hover,
.tts-on-dark .tts-share__btn:hover {
	background: rgba(255, 255, 255, .14);
	border-color: rgba(255, 255, 255, .3);
}