/* =========================================================
   本地图片水印工具 - 样式
   ========================================================= */

.lwm-app {
	--lwm-bg: #ffffff;
	--lwm-surface: #f8fafc;
	--lwm-border: #e2e8f0;
	--lwm-text: #0f172a;
	--lwm-muted: #64748b;
	--lwm-primary: #3b82f6;
	--lwm-primary-hover: #2563eb;
	--lwm-radius: 12px;

	box-sizing: border-box;
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
		"Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
	color: var(--lwm-text);
	line-height: 1.5;
	font-size: 14px;
	margin: 1.5em 0;
}

.lwm-app *,
.lwm-app *::before,
.lwm-app *::after {
	box-sizing: inherit;
}

.lwm-app [hidden] {
	display: none !important;
}

/* ---------- 上传区 ---------- */
.lwm-drop {
	border: 2px dashed var(--lwm-border);
	border-radius: var(--lwm-radius);
	background: var(--lwm-surface);
	padding: 48px 24px;
	text-align: center;
	cursor: pointer;
	transition: border-color 0.2s, background 0.2s;
}

.lwm-drop:hover,
.lwm-drop.is-over {
	border-color: var(--lwm-primary);
	background: rgba(59, 130, 246, 0.06);
}

.lwm-drop-icon {
	width: 44px;
	height: 44px;
	color: var(--lwm-muted);
	margin-bottom: 8px;
}

.lwm-drop-title {
	margin: 0 0 6px;
	font-size: 16px;
	font-weight: 600;
}

.lwm-drop-tip {
	margin: 0;
	font-size: 13px;
	color: var(--lwm-muted);
}

/* ---------- 布局 ---------- */
.lwm-work {
	display: grid;
	grid-template-columns: minmax(0, 1fr) 320px;
	gap: 20px;
	align-items: start;
}

@media (max-width: 860px) {
	.lwm-work {
		grid-template-columns: 1fr;
	}
}

/* ---------- 画布 ---------- */
.lwm-stage {
	min-width: 0;
}

.lwm-canvas-wrap {
	border-radius: var(--lwm-radius);
	padding: 14px;
	display: flex;
	align-items: center;
	justify-content: center;
	min-height: 220px;
	overflow: hidden;
	background-color: #f1f5f9;
	background-image:
		linear-gradient(45deg, #e2e8f0 25%, transparent 25%),
		linear-gradient(-45deg, #e2e8f0 25%, transparent 25%),
		linear-gradient(45deg, transparent 75%, #e2e8f0 75%),
		linear-gradient(-45deg, transparent 75%, #e2e8f0 75%);
	background-size: 16px 16px;
	background-position: 0 0, 0 8px, 8px -8px, -8px 0;
}

.lwm-canvas-wrap canvas {
	display: block;
	max-width: 100%;
	max-height: 72vh;
	height: auto;
	border-radius: 6px;
	box-shadow: 0 6px 24px rgba(15, 23, 42, 0.12);
}

/* ---------- 缩略图 ---------- */
.lwm-thumbs {
	display: flex;
	gap: 8px;
	flex-wrap: wrap;
	margin-top: 12px;
}

.lwm-thumb {
	width: 62px;
	height: 62px;
	padding: 0;
	border: 2px solid transparent;
	border-radius: 8px;
	overflow: hidden;
	cursor: pointer;
	background: #f1f5f9;
	transition: border-color 0.15s;
	line-height: 0;
}

.lwm-thumb img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	display: block;
}

.lwm-thumb.is-active {
	border-color: var(--lwm-primary);
}

/* ---------- 面板 ---------- */
.lwm-panel {
	display: flex;
	flex-direction: column;
	gap: 14px;
	min-width: 0;
}

.lwm-group {
	border: 1px solid var(--lwm-border);
	border-radius: var(--lwm-radius);
	background: var(--lwm-bg);
	overflow: hidden;
}

.lwm-group-head {
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: 12px 14px;
	font-weight: 600;
	font-size: 14px;
	background: var(--lwm-surface);
	border-bottom: 1px solid var(--lwm-border);
}

.lwm-group-body {
	padding: 14px;
	display: flex;
	flex-direction: column;
	gap: 12px;
}

/* ---------- 表单 ---------- */
.lwm-field {
	display: flex;
	flex-direction: column;
	gap: 6px;
	font-size: 13px;
	color: var(--lwm-muted);
	margin: 0;
}

.lwm-field > span {
	display: flex;
	justify-content: space-between;
	align-items: center;
}

.lwm-field b {
	color: var(--lwm-text);
	font-weight: 600;
}

.lwm-row {
	display: grid;
	grid-template-columns: 80px 1fr;
	gap: 12px;
	align-items: end;
}

.lwm-app input[type="text"] {
	width: 100%;
	height: 36px;
	padding: 0 10px;
	border: 1px solid var(--lwm-border);
	border-radius: 8px;
	background: var(--lwm-bg);
	color: var(--lwm-text);
	font-size: 14px;
	font-family: inherit;
	outline: none;
	transition: border-color 0.15s, box-shadow 0.15s;
}

.lwm-app input[type="text"]:focus {
	border-color: var(--lwm-primary);
	box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.lwm-app input[type="range"] {
	width: 100%;
	margin: 0;
	accent-color: var(--lwm-primary);
	cursor: pointer;
}

.lwm-app input[type="color"] {
	width: 100%;
	height: 36px;
	padding: 3px;
	border: 1px solid var(--lwm-border);
	border-radius: 8px;
	background: var(--lwm-bg);
	cursor: pointer;
}

.lwm-check {
	display: flex;
	align-items: center;
	gap: 8px;
	font-size: 13px;
	color: var(--lwm-text);
	cursor: pointer;
	margin: 0;
}

.lwm-check input {
	accent-color: var(--lwm-primary);
	width: 16px;
	height: 16px;
	margin: 0;
	cursor: pointer;
}

/* ---------- 开关 ---------- */
.lwm-switch {
	position: relative;
	display: inline-flex;
	cursor: pointer;
	margin: 0;
}

.lwm-switch input {
	position: absolute;
	opacity: 0;
	width: 0;
	height: 0;
}

.lwm-switch-track {
	width: 40px;
	height: 22px;
	border-radius: 999px;
	background: #cbd5e1;
	position: relative;
	transition: background 0.2s;
}

.lwm-switch-track::after {
	content: "";
	position: absolute;
	top: 3px;
	left: 3px;
	width: 16px;
	height: 16px;
	border-radius: 50%;
	background: #fff;
	transition: transform 0.2s;
	box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.lwm-switch input:checked + .lwm-switch-track {
	background: var(--lwm-primary);
}

.lwm-switch input:checked + .lwm-switch-track::after {
	transform: translateX(18px);
}

.lwm-switch input:focus-visible + .lwm-switch-track {
	box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.35);
}

/* ---------- 九宫格 ---------- */
.lwm-pos {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 5px;
	width: 108px;
	height: 108px;
	margin: 0 auto;
}

.lwm-pos button {
	position: relative;
	padding: 0;
	border: 1px solid var(--lwm-border);
	border-radius: 6px;
	background: var(--lwm-bg);
	cursor: pointer;
	transition: border-color 0.15s, background 0.15s;
}

.lwm-pos button::after {
	content: "";
	position: absolute;
	inset: 34%;
	border-radius: 2px;
	background: var(--lwm-muted);
	opacity: 0.45;
	transition: background 0.15s, opacity 0.15s;
}

.lwm-pos button:hover {
	border-color: var(--lwm-primary);
}

.lwm-pos button.is-active {
	border-color: var(--lwm-primary);
	background: rgba(59, 130, 246, 0.08);
}

.lwm-pos button.is-active::after {
	background: var(--lwm-primary);
	opacity: 1;
}

/* ---------- 按钮 ---------- */
.lwm-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	height: 40px;
	padding: 0 16px;
	border-radius: 9px;
	border: 1px solid var(--lwm-border);
	background: var(--lwm-bg);
	color: var(--lwm-text);
	font-size: 14px;
	font-weight: 600;
	font-family: inherit;
	cursor: pointer;
	text-decoration: none;
	transition: background 0.15s, border-color 0.15s, color 0.15s, transform 0.05s;
	line-height: 1;
}

.lwm-btn:active {
	transform: translateY(1px);
}

.lwm-btn-block {
	width: 100%;
}

.lwm-btn-primary {
	background: var(--lwm-primary);
	border-color: var(--lwm-primary);
	color: #fff;
}

.lwm-btn-primary:hover {
	background: var(--lwm-primary-hover);
	border-color: var(--lwm-primary-hover);
	color: #fff;
}

.lwm-btn-ghost {
	background: transparent;
}

.lwm-btn-ghost:hover {
	background: var(--lwm-surface);
	border-color: #cbd5e1;
}

.lwm-actions {
	display: flex;
	flex-direction: column;
	gap: 8px;
}

.lwm-hint {
	margin: 0;
	font-size: 12px;
	color: var(--lwm-muted);
	word-break: break-all;
	text-align: center;
}

/* ---------- 深色模式 ---------- */
@media (prefers-color-scheme: dark) {
	.lwm-app {
		--lwm-bg: #1e293b;
		--lwm-surface: #0f172a;
		--lwm-border: #334155;
		--lwm-text: #e2e8f0;
		--lwm-muted: #94a3b8;
	}

	.lwm-canvas-wrap {
		background-color: #0f172a;
		background-image:
			linear-gradient(45deg, #1e293b 25%, transparent 25%),
			linear-gradient(-45deg, #1e293b 25%, transparent 25%),
			linear-gradient(45deg, transparent 75%, #1e293b 75%),
			linear-gradient(-45deg, transparent 75%, #1e293b 75%);
	}

	.lwm-switch-track {
		background: #475569;
	}
}

.lwm-btn:disabled {
	opacity: 0.55;
	cursor: not-allowed;
	transform: none;
	pointer-events: none;
}