:root {
	color-scheme: light;
	font-family: "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
	background: #eef1f4;
	color: #1f2428;
	--line: #cfd7dd;
	--line-strong: #aab7c1;
	--panel: #f8fafb;
	--page: #ffffff;
	--text-muted: #66737f;
	--accent: #0f7b68;
	--accent-strong: #095c4e;
	--focus: #c9892b;
	--sidebar-width: clamp(220px, 20vw, 292px);
	--bar-bg: #fbfcfd;
	--bar-height: 40px;
	--bar-pad: 5px 10px;
	--control-height: 28px;
	--page-space: clamp(14px, 2.5vw, 28px);
	--shadow-soft: 0 10px 28px rgba(31, 36, 40, 0.12);
	--shadow-page: 0 14px 30px rgba(31, 36, 40, 0.16);
}

* {
	box-sizing: border-box;
}

html {
	width: 100%;
	height: 100%;
	overflow: hidden;
}

body {
	margin: 0;
	width: 100%;
	min-width: 320px;
	min-height: 100vh;
	overflow: hidden;
	background: #eef1f4;
}

button,
input,
select {
	font: inherit;
}

button {
	border: 1px solid var(--line-strong);
	background: #ffffff;
	color: #1f2428;
	cursor: pointer;
	transition: border-color 0.16s ease, background-color 0.16s ease, color 0.16s ease;
}

button:disabled,
input:disabled,
select:disabled {
	cursor: not-allowed;
	opacity: 0.48;
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
a:focus-visible {
	outline: 2px solid var(--focus);
	outline-offset: 2px;
}

.app {
	display: grid;
	grid-template-rows: auto minmax(0, 1fr) auto;
	width: 100%;
	height: 100vh;
	overflow: hidden;
}

.app-bar {
	display: flex;
	align-items: center;
	flex-wrap: nowrap;
	gap: 8px;
	width: 100%;
	min-width: 0;
	height: var(--bar-height);
	min-height: var(--bar-height);
	flex: 0 0 var(--bar-height);
	padding: var(--bar-pad);
	background: var(--bar-bg);
	box-shadow: 0 1px 0 rgba(255, 255, 255, 0.68) inset;
}

.toolbar {
	--tool-gap: 8px;
	position: relative;
	z-index: 12;
	border-bottom: 1px solid var(--line);
	font-size: 14px;
	gap: var(--tool-gap);
	overflow-x: auto;
	overflow-y: hidden;
	scrollbar-width: none;
	-ms-overflow-style: none;
}

.toolbar::-webkit-scrollbar {
	display: none;
}

.file-input {
	position: absolute;
	width: 1px;
	height: 1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
}

.button,
.icon-button {
	height: var(--control-height);
	border-radius: 0;
}

.button {
	padding: 0 10px;
	white-space: nowrap;
}

.button.primary {
	border-color: var(--accent);
	background: var(--accent);
	color: #ffffff;
}

.button.primary:hover {
	background: var(--accent-strong);
}

button:not(:disabled):hover {
	border-color: var(--accent);
	background: #f2faf7;
}

.button[aria-pressed="true"],
.icon-button[aria-pressed="true"] {
	border-color: var(--accent);
	background: #e4f3ef;
	color: var(--accent-strong);
}

.icon-button {
	display: inline-grid;
	place-items: center;
	width: var(--control-height);
	padding: 0;
	font-size: 14px;
	line-height: 1;
}

.toolbar-space {
	flex: 1 1 auto;
}

.tool-group {
	display: inline-flex;
	align-items: center;
	gap: var(--tool-gap);
	flex: 0 0 auto;
	min-width: 0;
}

.tool-group + .tool-group {
	margin-left: 0;
	padding-left: 0;
}

.tool-group + .tool-group::before {
	flex: 0 0 1px;
	width: 1px;
	height: 22px;
	margin: 0 calc(12px - var(--tool-gap));
	background: var(--line);
	content: "";
}

.page-control {
	display: inline-flex;
	align-items: center;
	gap: 6px;
	height: var(--control-height);
	padding: 0 7px;
	border: 1px solid var(--line);
	border-radius: 0;
	background: #ffffff;
	color: var(--text-muted);
}

.page-control input {
	width: 48px;
	border: 0;
	outline: 0;
	text-align: right;
	color: #1f2428;
	background: transparent;
}

.format-select {
	width: 58px;
	height: var(--control-height);
	min-width: 0;
	padding: 0 4px;
	border: 1px solid var(--line);
	border-radius: 0;
	background: #ffffff;
	color: #1f2428;
}

.format-select:focus,
.format-select:focus-visible {
	border-color: var(--accent);
	outline: 2px solid var(--accent);
	outline-offset: 2px;
}

.format-select option:checked {
	background-color: #e4f3ef;
	color: var(--accent-strong);
}

.zoom-label {
	min-width: 42px;
	text-align: center;
	color: var(--text-muted);
	font-variant-numeric: tabular-nums;
}

.workspace {
	display: grid;
	grid-template-columns: var(--sidebar-width) minmax(0, 1fr) var(--sidebar-width);
	min-height: 0;
}

body[data-hide-pages] .workspace {
	grid-template-columns: minmax(0, 1fr) var(--sidebar-width);
}

body[data-hide-meta] .workspace {
	grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
}

body[data-hide-pages][data-hide-meta] .workspace {
	grid-template-columns: minmax(0, 1fr);
}

body[data-hide-pages] .page-list-panel,
body[data-hide-meta] .meta-panel {
	display: none;
}

.page-list-panel,
.meta-panel {
	min-height: 0;
	padding: 12px;
	border-right: 1px solid var(--line);
	background: var(--panel);
	overflow: auto;
}

.meta-panel {
	border-right: 0;
	border-left: 1px solid var(--line);
}

.panel-title {
	margin-bottom: 10px;
	font-size: 12px;
	font-weight: 700;
	color: var(--text-muted);
	text-transform: uppercase;
	letter-spacing: 0;
}

.panel-title.compact {
	margin-bottom: 0;
}

.panel-row {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 8px;
	margin-bottom: 10px;
	flex-wrap: wrap;
}

.panel-actions {
	display: inline-flex;
	align-items: center;
	gap: 6px;
	flex-wrap: wrap;
	justify-content: flex-end;
}

.small-button {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	height: 26px;
	padding: 0 8px;
	border-radius: 0;
	font-size: 12px;
	white-space: nowrap;
}

.page-list {
	display: grid;
	gap: 8px;
}

.page-list-item {
	display: grid;
	gap: 6px;
	width: 100%;
	height: auto;
	padding: 8px;
	font-variant-numeric: tabular-nums;
	text-align: left;
	transition: border-color 0.16s ease, background-color 0.16s ease;
}

.page-list-item[aria-current] {
	border-color: var(--accent);
	background: #e4f3ef;
	color: var(--accent-strong);
	font-weight: 700;
}

.thumb-paper {
	display: grid;
	place-items: center;
	width: 100%;
	aspect-ratio: var(--thumb-ratio, 0.707 / 1);
	overflow: hidden;
	border: 1px solid var(--line);
	background: #ffffff;
	box-shadow: 0 2px 7px rgba(31, 36, 40, 0.1);
	color: #9aa6b1;
	font-size: 20px;
	line-height: 1;
}

.thumb-paper.pending,
.thumb-paper.error {
	background:
		linear-gradient(90deg, rgba(31, 36, 40, 0.04) 1px, transparent 1px),
		linear-gradient(0deg, rgba(31, 36, 40, 0.04) 1px, transparent 1px),
		#ffffff;
	background-size: 12px 12px;
}

.thumb-svg {
	display: block;
	width: 100%;
	height: 100%;
}

.thumb-label,
.thumb-size {
	display: block;
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
}

.thumb-label {
	font-size: 13px;
	color: #1f2428;
}

.thumb-size {
	font-size: 11px;
	color: var(--text-muted);
	font-weight: 400;
}

.viewer-panel {
	position: relative;
	min-width: 0;
	min-height: 0;
	overflow: auto;
	background:
		linear-gradient(90deg, rgba(31, 36, 40, 0.05) 1px, transparent 1px),
		linear-gradient(0deg, rgba(31, 36, 40, 0.05) 1px, transparent 1px),
		#e5e9ed;
	background-size: 24px 24px;
}

.empty-state {
	position: absolute;
	inset: 0;
	display: grid;
	place-items: center;
	padding: 24px;
	color: var(--text-muted);
	font-size: 14px;
	text-align: center;
}

.empty-state[hidden],
.page-frame[hidden],
.progress-panel[hidden] {
	display: none;
}

.progress-panel {
	position: fixed;
	left: 50%;
	bottom: calc(var(--bar-height) + 14px);
	z-index: 20;
	display: grid;
	grid-template-columns: auto minmax(0, 1fr);
	align-items: center;
	gap: 8px 10px;
	width: min(420px, calc(100vw - 32px));
	padding: 10px 12px;
	border: 1px solid rgba(170, 183, 193, 0.82);
	background: rgba(251, 252, 253, 0.96);
	box-shadow: var(--shadow-soft);
	transform: translateX(-50%);
	backdrop-filter: blur(8px);
}

.progress-spinner {
	width: 18px;
	height: 18px;
	border: 2px solid #d5dde3;
	border-top-color: var(--accent);
	border-radius: 50%;
	animation: spin 0.8s linear infinite;
}

.progress-label {
	min-width: 0;
	overflow: hidden;
	color: #1f2428;
	font-size: 13px;
	text-overflow: ellipsis;
	white-space: nowrap;
}

.progress-track {
	grid-column: 1 / -1;
	width: 100%;
	height: 4px;
	overflow: hidden;
	background: #dbe2e7;
}

.progress-bar {
	width: 0;
	height: 100%;
	background: var(--accent);
	transition: width 0.18s ease;
}

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

.page-frame {
	display: grid;
	align-items: safe center;
	min-width: 100%;
	min-height: 100%;
	padding: var(--page-space);
}

.svg-host {
	display: grid;
	justify-items: center;
	gap: var(--page-space);
	width: max-content;
	margin: 0 auto;
}

.page-shell {
	position: relative;
	overflow: hidden;
	border: 1px solid rgba(170, 183, 193, 0.55);
	box-shadow: var(--shadow-page);
	background: var(--page);
}

.page-shell.error {
	background: #fff8f7;
}

.page-surface {
	transform-origin: 0 0;
}

.page-placeholder {
	position: absolute;
	inset: 0;
	display: grid;
	place-items: center;
	color: var(--text-muted);
	font-size: 13px;
	background:
		linear-gradient(90deg, rgba(31, 36, 40, 0.04) 1px, transparent 1px),
		linear-gradient(0deg, rgba(31, 36, 40, 0.04) 1px, transparent 1px),
		#ffffff;
	background-size: 18px 18px;
}

.page-shell.rendered .page-placeholder {
	display: none;
}

.stamp-highlight {
	position: absolute;
	z-index: 4;
	border: 2px solid var(--accent);
	background: rgba(15, 123, 104, 0.08);
	box-shadow: 0 0 0 3px rgba(15, 123, 104, 0.16);
	pointer-events: none;
	animation: stampPulse 0.9s ease-in-out 2;
}

@keyframes stampPulse {
	50% {
		border-color: var(--accent-strong);
		box-shadow: 0 0 0 5px rgba(15, 123, 104, 0.18);
	}
}

.ofd-svg {
	display: block;
	max-width: none;
	transform-origin: 0 0;
}

.meta-list {
	display: grid;
	gap: 12px;
	margin: 0;
}

.meta-list div {
	display: grid;
	gap: 3px;
}

.meta-list dt {
	font-size: 12px;
	color: var(--text-muted);
}

.meta-list dd {
	margin: 0;
	overflow-wrap: anywhere;
	line-height: 1.35;
}

.font-panel,
.doc-font-panel,
.signature-panel {
	margin-top: 18px;
	padding-top: 12px;
	border-top: 1px solid var(--line);
}

.count-pill {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-width: 28px;
	height: 26px;
	padding: 0 7px;
	border: 1px solid var(--line);
	background: #ffffff;
	color: var(--text-muted);
	font-size: 11px;
	text-align: center;
	white-space: nowrap;
}

.doc-font-list,
.signature-list {
	display: grid;
	gap: 8px;
}

.doc-font-row,
.signature-row {
	display: grid;
	gap: 6px;
	padding: 9px;
	border: 1px solid var(--line);
	background: #ffffff;
	transition: border-color 0.16s ease, background-color 0.16s ease;
}

.page-list-item:not(:disabled):hover,
.doc-font-row:hover,
.signature-row:hover,
.font-row:hover {
	border-color: var(--line-strong);
	background: #ffffff;
}

.doc-font-row.missing {
	border-color: #e2c7c4;
	background: #fffdfc;
}

.doc-font-row.fallback {
	border-color: #ded0a6;
	background: #fffdf7;
}

.signature-row.valid {
	border-color: #bdd8cc;
	background: #fbfefd;
}

.signature-row.invalid {
	border-color: #e2c7c4;
	background: #fffdfc;
}

.doc-font-head,
.signature-head {
	display: grid;
	grid-template-columns: minmax(0, 1fr) auto;
	align-items: start;
	gap: 8px;
}

.doc-font-name,
.signature-name {
	overflow: hidden;
	color: #1f2428;
	font-size: 13px;
	font-weight: 600;
	text-overflow: ellipsis;
	white-space: nowrap;
}

.signature-name-button {
	display: inline;
	padding: 0;
	border: 0;
	background: transparent;
	color: inherit;
	font: inherit;
	font-weight: inherit;
	cursor: pointer;
	text-align: left;
}

.signature-name-button:not(:disabled):hover {
	background: transparent;
	color: var(--accent-strong);
	text-decoration: underline;
}

.signature-name-with-stamps {
	white-space: normal;
}

.signature-stamp-group {
	color: var(--text-muted);
	font-weight: 400;
}

.signature-stamp-link {
	padding: 0;
	border: 0;
	background: transparent;
	color: var(--accent-strong);
	font: inherit;
	font-weight: 400;
	line-height: inherit;
	cursor: pointer;
}

.signature-stamp-link:not(:disabled):hover {
	background: transparent;
	text-decoration: underline;
}

.doc-font-badges,
.signature-badges {
	display: flex;
	flex-wrap: wrap;
	justify-content: flex-end;
	gap: 4px;
}

.font-badge {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-width: 30px;
	padding: 3px 6px;
	background: #eef1f4;
	color: var(--text-muted);
	font-size: 11px;
	line-height: 1.35;
	white-space: nowrap;
}

.font-badge.embedded,
.font-badge.matched {
	background: #e4f3ef;
	color: var(--accent-strong);
}

.font-badge.fallback {
	background: #fbefd3;
	color: #705719;
}

.font-badge.missing,
.font-badge.invalid {
	background: #f9e8e5;
	color: #803f38;
}

.font-badge.valid {
	background: #e4f3ef;
	color: var(--accent-strong);
}

.signature-line {
	display: grid;
	grid-template-columns: 30px minmax(0, 1fr);
	align-items: start;
	gap: 7px;
	color: var(--text-muted);
	font-size: 11px;
	line-height: 1.35;
}

.signature-label {
	color: #7b8791;
	white-space: nowrap;
}

.signature-value {
	min-width: 0;
	overflow-wrap: anywhere;
}

.signature-line.ok .signature-value {
	color: var(--accent-strong);
}

.signature-line.fail .signature-value {
	color: #803f38;
}

.doc-font-detail {
	color: var(--text-muted);
	font-size: 11px;
	line-height: 1.35;
	overflow-wrap: anywhere;
}

.font-list {
	display: grid;
	gap: 8px;
}

.font-permission-hint {
	margin: 0 0 8px;
	padding: 7px 8px;
	border: 1px solid var(--line);
	background: #ffffff;
	color: var(--text-muted);
	font-size: 12px;
	line-height: 1.35;
}

.font-row {
	display: grid;
	grid-template-columns: minmax(0, 1fr) auto;
	align-items: center;
	gap: 6px;
	padding: 6px;
	border: 1px solid var(--line);
	background: #ffffff;
}

.font-main {
	display: grid;
	grid-template-columns: auto minmax(0, 1fr);
	align-items: center;
	gap: 7px;
	min-width: 0;
}

.font-actions {
	display: flex;
	align-items: center;
	justify-content: flex-end;
	gap: 5px;
	min-width: max-content;
}

.font-row input[type="checkbox"] {
	width: 16px;
	height: 16px;
	margin: 0;
	accent-color: var(--accent);
}

.font-name-input {
	width: 100%;
	min-width: 0;
	height: 26px;
	padding: 0 6px;
	border: 1px solid var(--line);
	background: #ffffff;
	color: #1f2428;
	font-size: 12px;
}

.font-source {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-width: 32px;
	height: 20px;
	padding: 0 6px;
	border: 1px solid var(--line);
	background: #f8fafb;
	color: var(--text-muted);
	font-size: 11px;
	text-align: center;
	white-space: nowrap;
}

.font-toggle {
	display: inline-flex;
	align-items: center;
	gap: 3px;
	height: 26px;
	color: var(--text-muted);
	font-size: 11px;
	white-space: nowrap;
}

.font-delete {
	display: inline-grid;
	place-items: center;
	width: 26px;
	height: 26px;
	padding: 0;
	color: #7c3333;
	font-size: 18px;
	line-height: 1;
}

.font-empty {
	padding: 10px;
	border: 1px dashed var(--line-strong);
	color: var(--text-muted);
	font-size: 13px;
	text-align: center;
}

.app-footer {
	justify-content: space-between;
	overflow: hidden;
	border-top: 1px solid var(--line);
	color: var(--text-muted);
	font-size: 12px;
}

.footer-brand {
	flex: 0 0 var(--sidebar-width);
	min-width: 0;
	overflow: hidden;
	font-weight: 400;
	color: var(--accent-strong);
	text-decoration: none;
	text-overflow: ellipsis;
	white-space: nowrap;
}

.status-text {
	flex: 1 1 auto;
	min-width: 0;
	overflow: hidden;
	color: var(--text-muted);
	line-height: 1.35;
	text-align: center;
	text-overflow: ellipsis;
	white-space: nowrap;
}

.footer-links {
	display: inline-flex;
	align-items: center;
	gap: 12px;
	flex: 0 0 var(--sidebar-width);
	justify-content: flex-end;
	min-width: 0;
	overflow: hidden;
}

.app-footer a {
	color: var(--accent-strong);
	font-weight: 400;
	text-decoration: none;
}

.app-footer a:hover {
	text-decoration: underline;
}

@media (max-width: 900px) {
	:root {
		--sidebar-width: min(78vw, 292px);
	}

	.toolbar {
		--tool-gap: 6px;
		flex-wrap: nowrap;
		overflow-x: auto;
	}

	.toolbar > * {
		flex: 0 0 auto;
	}

	.toolbar-space {
		display: none;
	}

	.app-footer {
		flex-wrap: nowrap;
	}

	.footer-brand,
	.footer-links {
		flex: 0 1 auto;
	}

	.status-text {
		text-align: center;
	}

	.workspace {
		position: relative;
		grid-template-columns: minmax(0, 1fr);
	}

	body[data-hide-pages] .workspace,
	body[data-hide-meta] .workspace,
	body[data-hide-pages][data-hide-meta] .workspace {
		grid-template-columns: minmax(0, 1fr);
	}

	.page-list-panel,
	.meta-panel {
		position: absolute;
		top: 0;
		bottom: 0;
		z-index: 8;
		width: var(--sidebar-width);
		box-shadow: 0 16px 32px rgba(31, 36, 40, 0.18);
		transition: transform 0.18s ease;
	}

	body[data-hide-pages] .page-list-panel,
	body[data-hide-meta] .meta-panel {
		display: block;
	}

	.page-list-panel {
		left: 0;
	}

	.meta-panel {
		right: 0;
	}

	body[data-hide-pages] .page-list-panel {
		transform: translateX(-100%);
		pointer-events: none;
	}

	body[data-hide-meta] .meta-panel {
		transform: translateX(100%);
		pointer-events: none;
	}
}

@media (max-width: 640px) {
	:root {
		--bar-height: 42px;
		--control-height: 28px;
		--bar-pad: 5px 8px;
	}

	.workspace {
		grid-template-columns: 1fr;
	}

	.toolbar {
		height: var(--bar-height);
		min-height: var(--bar-height);
		flex-wrap: nowrap;
		align-content: center;
		overflow-x: auto;
		overflow-y: hidden;
		row-gap: 0;
	}

	.toolbar-space {
		display: none;
	}

	.tool-group + .tool-group::before {
		display: none;
	}

	.button {
		padding: 0 7px;
	}

	.button[data-short] {
		min-width: var(--control-height);
		font-size: 0;
	}

	.button[data-short]::after {
		content: attr(data-short);
		font-size: 12px;
		font-weight: 500;
	}

	.button.primary[data-short] {
		min-width: 42px;
	}

	.icon-button {
		font-size: 13px;
	}

	.page-control {
		gap: 4px;
		padding: 0 6px;
	}

	.page-control input {
		width: 38px;
	}

	.zoom-label {
		min-width: 34px;
	}

	#exportButton {
		padding-inline: 8px;
	}

	.format-select {
		width: 52px;
		padding: 0 3px;
	}

	.footer-links {
		justify-content: flex-end;
	}
}