:root {
	--td-main-width: 80vw;
	--td-space-between: 0.5rem;
	--td-btn-padding-top: 0.375rem;
	--td-btn-padding-left: 0.75rem;
	--td-margin-top: 1rem;
	--td-margin-box: 2rem;
	--td-btn-margin: -0.375rem -0.75rem;
	--td-blue: #0d6efd;
	--td-blue-disable: #579aff;
	--td-gray: rgb(83, 83, 83);
	--td-gray-border: #ced4da;
	--td-gray-bg: #e9ecef;
	--td-dark: #212529;
	--td-light: #f8f9fa;
	--td-font-sans-serif: system-ui, -apple-system, "Segoe UI", Roboto,
		"Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif,
		"Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
}

/* 覆盖默认样式 */

input[type="file"]::file-selector-button {
	padding: var(--td-btn-padding-top) var(--td-btn-padding-left);
	margin: var(--td-btn-margin);
	margin-inline-end: var(--td-btn-padding-left);
	border: 0;
	background-color: var(--td-gray-bg);
	color: var(--td-dark);
	transition: color 0.15s ease-in-out, background-color 0.15s ease-in-out,
		border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

[type="button"]:not(:disabled),
[type="reset"]:not(:disabled),
[type="submit"]:not(:disabled),
button:not(:disabled) {
	cursor: pointer;
}

input:focus,
select:focus {
	outline-offset: -2px;
}

input,
select,
button {
	padding: var(--td-btn-padding-top) var(--td-btn-padding-left);
	-webkit-appearance: none;
	-moz-appearance: none;
	appearance: none;
	border: 1px solid var(--td-gray-border);
}

button {
	background: var(--td-blue);
	color: var(--td-light);
	border: 0;
}

button:disabled {
	background: var(--td-blue-disable);
}

select {
	background: var(--td-light) no-repeat;
	color: var(--td-dark);
	padding-right: 2.25rem;
	background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
	background-position: right var(--td-btn-padding-left) center;
	background-size: 16px 12px;
}

textarea {
	border: 0;
	width: 100%;
	height: 100%;
	padding: 0.75rem 1.75rem;
	appearance: none;
	resize: none;
}

/* 图标 */
.icon {
	box-sizing: content-box;
	width: 0.75em;
	height: 0.75em;
	padding: 0.25em 0.25em;
	color: var(--td-dark);
	border: 0;
	opacity: 0.5;
}

.btn-close {
	background: url('https://api.iconify.design/fa:close.svg') no-repeat center center / contain;
}

.btn-swap {
	background: url('https://api.iconify.design/fa:exchange.svg') no-repeat center center / contain;
}

.btn-swap:disabled {
	background: url('https://api.iconify.design/fa:exchange.svg') no-repeat center center / contain;
	opacity: 0.3;
}

.btn-clone {
	background: url('https://api.iconify.design/fa:clone.svg') no-repeat center center / contain;
}

.loading {
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	background: url("https://api.iconify.design/fa:spinner.svg")
		no-repeat center center / contain;
	animation: rotate 1s infinite linear;
}

@keyframes rotate {
	from {
		transform: translate(-50%, -50%) rotate(0);
	}
	to {
		transform: translate(-50%, -50%) rotate(1turn);
	}
}

.btn-translate {
	position: relative;
}

/* 通用样式 */
.col {
	margin: var(--td-btn-padding-top) 0;
	flex: 2;
}

.row {
	display: flex;
	align-items: center;
	width: 100%;
	margin: var(--td-margin-top) 0 0;
}

.row > *:not(:last-child) {
	margin-right: var(--td-space-between);
}

/* 全局设定 */
* {
	margin: 0;
	padding: 0;
	border-radius: 5px !important;
	/* color: var(--td-dark); */
}

html {
	font-family: var(--td-font-sans-serif);
}

#app {
	display: flex;
	flex-direction: column;
	align-items: center;
}

header {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	/* text-align: center; */

	width: 100%;
	height: 8rem;
	background: var(--td-gray-bg);
	/* border-bottom: solid 1px var(--td-gray-bg); */
}

main, .description {
	width: var(--td-main-width);
}

.description {
	color: var(--td-gray);
}

.file-box,
.upload-box {
	width: 100%;
	margin-top: var(--td-margin-box);
}

@media (min-width: 860px) {
	.row-col {
		display: flex;
	}
}

.row-col > .col > *:not(:last-child) {
	margin-right: var(--td-space-between);
}

.toolbar {
	position: absolute;
	margin: 0;
	bottom: 0;
	left: 0;
	width: 100%;
	background-color: var(--td-light);
	display: flex;
	align-items: center;
	height: 2.5rem;
}

.toolbar > *,
.right > * {
	margin-left: var(--td-space-between);
}

.right {
	flex: 1;
	display: flex;
	justify-content: flex-end;
	margin-right: var(--td-space-between);
}

.txt-area > .col {
	height: 20rem;
}

textarea,
.output-area {
	box-sizing: border-box;
	line-height: 1.5;
	font-size: 1rem;
}

textarea[readonly] {
	background: var(--td-gray-bg);
}

/* pre {
	white-space: pre-wrap;
} */

.output-area {
	border: solid 1px var(--td-gray-border);
	background-color: var(--td-gray-bg);
	position: relative;
	padding-bottom: 2.5rem;
	overflow: hidden;
}

.droptarget-wrap {
	display: flex;
	height: 30vh;
	width: var(--td-main-width);
	margin-top: var(--td-btn-padding-top);
}

#droptarget {
	height: 80%;
	width: 100%;
	background: var(--td-gray-bg);
	display: flex;
	justify-content: center;
	align-items: center;
}

@media (max-width: 1024px) {
	.droptarget-wrap {
		display: none;
	}
	input[type="text"] {
		max-width: 20vw;
	}
	input[type="file"] {
		max-width: 35vw;
	}
}

@media (max-width: 450px) {
	input[type="file"] {
		width: 44px;
	}
}