/* ========== 多AI Tab切换系统 ========== */
.message-bubble-wrapper {
	flex: 1;
	min-width: 0;
	display: flex;
	flex-direction: column;
}

.provider-tab-bar {
	display: flex;
	gap: var(--space-md);
	margin-bottom: var(--space-md);
	flex-wrap: wrap;
}

.provider-tab {
	display: inline-flex;
	align-items: center;
	gap: var(--space-xs);
	padding: 4px 10px;
	border-radius: var(--radius-full);
	background: #fff;
	color: var(--color-text-primary);
	font-size: var(--font-size-md);
	cursor: pointer;
	white-space: nowrap;
	font-family: inherit;
	border: 1px solid transparent; /* 【优化】基础态加透明边框，hover 时不闪烁 */
}

.provider-tab:hover,
.provider-tab.tab-video:hover {
	color: var(--color-text-inverse);
	background: var(--color-success);
	border-color: var(--color-success);
}

.provider-tab.active {
	background: var(--color-success);
	color: #fff;
	border-color: var(--color-success);
}

.provider-tab.tab-done {
	border-color: var(--color-border);
}

.provider-tab.tab-done.active,
.provider-tab.tab-video.active {
	background: var(--color-success);
	color: var(--color-text-inverse);
	border-color: var(--color-success);
}

.provider-tab.tab-error {
	border-color: var(--color-danger);
	color: var(--color-danger);
	opacity: 0.5;
	text-decoration: line-through;
}

/* Tab 耗时显示 */
.tab-time {
	font-size: 12px;
	font-weight: normal;
}

/* 闪烁加载效果 */
.provider-tab.tab-loading {
	animation: tabPulse 1.2s ease-in-out infinite;
}

.provider-tab.tab-loading .tab-spinner {
	display: inline-block;
	width: 8px;
	height: 8px;
	border: 1.5px solid currentColor;
	border-right-color: transparent;
	border-radius: 50%;
	animation: spinnerRotate 0.6s linear infinite;
}

@keyframes tabPulse {
	0%, 100% { opacity: 1; }
	50% { opacity: 0.45; }
}

@keyframes spinnerRotate {
	to { transform: rotate(360deg); }
}

.provider-tab-content {
	flex: 1;
	min-width: 0;
	min-height: 40px;
}

.provider-panel {
	min-width: 0;
	animation: panelFadeIn var(--transition-fast) ease;
}

@keyframes panelFadeIn {
	from { opacity: 0; }
	to { opacity: 1; }
}

.provider-panel-content {
	font-size: var(--font-size-md);
	line-height: 1.7;
	overflow-wrap: break-word;
}

.provider-time-row {
	display: flex;
	justify-content: space-between;
	align-items: center;
	font-size: var(--font-size-xs);
	color: var(--color-text-muted);
	margin-top: var(--space-md);
	padding-top: var(--space-sm);
	border-top: 1px dashed var(--color-border);
}

.time-left {
	text-align: left;
}

.token-right {
	text-align: right;
	color: var(--color-text-secondary);
}

/* 【优化】统一使用 768px 断点，与 layout.css 保持一致 */
@media (max-width: 768px) {
	.provider-tab-bar {
		padding-bottom: var(--space-xs);
		margin-bottom: var(--space-sm);
	}

	.provider-tab {
		padding: 3px 8px;
		font-size: var(--font-size-sm);
		gap: var(--space-xs);
	}

	.provider-tab.tab-loading .tab-spinner {
		width: 6px;
		height: 6px;
	}
}

/* AI加载中文案 */
.ai-loading-text {
	color: var(--color-text-secondary);
	font-size: var(--font-size-md);
	display: inline-flex;
	align-items: center;
	gap: var(--space-sm);
}

.ai-loading-text::after {
	content: '';
	display: inline-block;
	width: 6px;
	height: 6px;
	background: var(--color-primary);
	border-radius: 50%;
	animation: loadingPulse 1.2s ease-in-out infinite;
}

@keyframes loadingPulse {
	0%, 100% {
		opacity: 0.3;
		transform: scale(0.8);
	}
	50% {
		opacity: 1;
		transform: scale(1.2);
	}
}

/* AI思考过程折叠块 */
.message-content .thinking-block {
	margin: 0 0 var(--space-md);
	padding: var(--space-md);
	background: rgba(51, 153, 255, 0.06);
	border: 1px solid var(--color-border);
	border-radius: var(--radius-md);
	font-size: var(--font-size-sm);
}

.message-content .thinking-block summary {
	cursor: pointer;
	color: var(--color-text-secondary);
	font-weight: 500;
	user-select: none;
}

.message-content .thinking-content {
	margin-top: var(--space-sm);
	max-height: 240px;
	overflow-y: auto;
	white-space: pre-wrap;
	word-break: break-word;
	color: var(--color-text-secondary);
	font-size: 12.5px;
	line-height: 1.7;
}


/* ========== 多AI tab气泡中的"视频"tab样式（题库命中） ========== */
.provider-tab .tab-badge-video {
	display: inline-block;
	background: #33CC33;
	color: #fff;
	font-size: 12px;
	padding: 1px 6px;
	border-radius: var(--radius-full);
	margin-left: var(--space-xs);
	letter-spacing: 0.5px;
}

.provider-panel.provider-panel-video .message-content {
	border-bottom-left-radius: var(--radius-sm);
	overflow: hidden;
	padding: var(--space-lg);
}

.provider-panel.provider-panel-video .db-video-card {
	margin: 0;
	border-radius: 0;
	box-shadow: none;
}