.dtb-layout {
	display: flex;
	gap: 20px;
	align-items: flex-start;
}

.dtb-builder {
	flex: 0 0 480px;
	min-width: 0;
}

.dtb-preview {
	flex: 1 1 auto;
	min-width: 0;
}

.dtb-section {
	margin-bottom: 20px;
	padding: 12px;
	background: var(--bg-secondary);
	border: 1px solid var(--border-color);
	border-radius: 4px;
}

.dtb-section-title {
	margin: 0 0 12px;
	font-size: 1.1rem;
	color: var(--text-color-header);
}

.dtb-notice {
	padding: 20px;
	text-align: center;
	background: var(--bg-secondary);
	border: 1px solid var(--border-color);
	border-radius: 4px;
}

.dtb-row,
.dtb-add,
.dtb-chosen {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 6px;
	margin-bottom: 8px;
}

.dtb-add {
	margin-bottom: 0;
}

.dtb-grow {
	flex: 1 1 120px;
	min-width: 0;
}

.dtb-narrow {
	width: 80px;
	flex: 0 0 auto;
}

.dtb-input,
.dtb-select {
	padding: 5px 8px;
	color: var(--text-color-normal);
	background: var(--bg-tertiary);
	border: 1px solid var(--border-color);
	border-radius: 3px;
	font-family: inherit;
	font-size: 0.9rem;
}

.dtb-input {
	width: 100%;
}

.dtb-row .dtb-input,
.dtb-add .dtb-input {
	width: auto;
}

.dtb-button {
	padding: 5px 12px;
	color: var(--text-color-normal);
	background: var(--bg-tertiary);
	border: 1px solid var(--border-color);
	border-radius: 3px;
	font-family: inherit;
	font-size: 0.9rem;
	cursor: pointer;
	text-decoration: none;
	display: inline-block;
}

.dtb-button:hover:not(:disabled) {
	color: var(--text-color-header);
	border-color: var(--primary-color);
}

.dtb-button:disabled {
	opacity: 0.4;
	cursor: default;
}

.dtb-small {
	padding: 4px 8px;
	font-size: 0.8rem;
}

.dtb-picker {
	list-style: none;
	margin: 8px 0 0;
	padding: 0;
	max-height: 340px;
	overflow-y: auto;
	border: 1px solid var(--border-color);
	border-radius: 3px;
}

.dtb-picker-item {
	display: flex;
	justify-content: space-between;
	gap: 8px;
	width: 100%;
	padding: 6px 8px;
	color: var(--text-color-normal);
	background: transparent;
	border: 0;
	font-family: inherit;
	font-size: 0.9rem;
	text-align: left;
	cursor: pointer;
}

.dtb-picker-item:hover {
	color: var(--text-color-header);
	background: var(--bg-hover);
}

.dtb-alias {
	flex: 0 0 auto;
	padding: 2px 6px;
	color: var(--primary-color);
	background: var(--bg-tertiary);
	border-radius: 3px;
	font-size: 0.8rem;
}

.dtb-table-name,
.dtb-col-name {
	color: var(--text-color-header);
	word-break: break-all;
}

.dtb-source,
.dtb-join-on {
	color: var(--text-muted);
	font-size: 0.8rem;
}

.dtb-label {
	color: var(--text-muted);
	font-size: 0.9rem;
}

.dtb-hint,
.dtb-empty {
	margin: 0 0 8px;
	color: var(--text-muted);
	font-size: 0.85rem;
	padding: 0 8px;
}

.dtb-stats {
	margin: 0 0 8px;
	color: var(--text-muted);
	font-size: 0.85rem;
}

.dtb-error-list {
	margin: 8px 0 0;
	padding-left: 20px;
}

.dtb-preview-table {
	overflow-x: auto;
}

.dtb-embed {
	display: block;
	width: 100%;
	margin: 8px 0;
	padding: 8px;
	color: var(--text-color-normal);
	background: var(--bg-tertiary);
	border: 1px solid var(--border-color);
	border-radius: 3px;
	font-family: monospace;
	font-size: 0.8rem;
	resize: vertical;
}

@media (max-width: 1100px) {
	.dtb-layout {
		flex-direction: column;
	}

	.dtb-builder {
		flex: 1 1 auto;
		width: 100%;
	}

	.dtb-preview {
		width: 100%;
	}
}