/* ============ 本地图片拼接 · UI 样式 ============ */

.lis-app {
	--lis-bg: #ffffff;
	--lis-surface: #f6f7f9;
	--lis-surface-2: #eceef2;
	--lis-border: #e3e6ea;
	--lis-border-strong: #d3d8df;
	--lis-text: #1a1d21;
	--lis-text-dim: #6b7280;
	--lis-primary: #4f6ef7;
	--lis-primary-2: #8b5cf6;
	--lis-danger: #e5484d;
	--lis-checker: rgba(20, 25, 40, 0.06);
	--lis-radius: 18px;
	--lis-shadow: 0 12px 34px -14px rgba(20, 25, 40, 0.22), 0 2px 6px -2px rgba(20, 25, 40, 0.06);

	position: relative;
	box-sizing: border-box;
	width: 100%;
	max-width: 100%;
	margin: 1.5em 0;
	padding: 20px;
	color: var(--lis-text);
	background: var(--lis-bg);
	border: 1px solid var(--lis-border);
	border-radius: var(--lis-radius);
	box-shadow: var(--lis-shadow);
	font-size: 14px;
	line-height: 1.5;
	-webkit-font-smoothing: antialiased;
}

.lis-app *,
.lis-app *::before,
.lis-app *::after { box-sizing: border-box; }

.lis-app button,
.lis-app input,
.lis-app select { font: inherit; color: inherit; }

.lis-app button { -webkit-tap-highlight-color: transparent; }

/* ---------- 头部 ---------- */
.lis-head {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 12px;
	padding-bottom: 16px;
	border-bottom: 1px solid var(--lis-border);
}

.lis-head-main { display: flex; align-items: center; gap: 12px; min-width: 0; }

.lis-logo {
	display: grid;
	place-items: center;
	width: 38px;
	height: 38px;
	flex: none;
	color: #fff;
	background: linear-gradient(135deg, var(--lis-primary), var(--lis-primary-2));
	border-radius: 12px;
	box-shadow: 0 6px 16px -8px var(--lis-primary);
}

.lis-title { font-size: 16px; font-weight: 700; letter-spacing: 0.2px; }

.lis-sub { font-size: 12.5px; color: var(--lis-text-dim); margin-top: 1px; }

.lis-badge {
	flex: none;
	padding: 4px 10px;
	font-size: 11.5px;
	font-weight: 600;
	color: #0e9f6e;
	background: rgba(14, 159, 110, 0.1);
	border: 1px solid rgba(14, 159, 110, 0.25);
	border-radius: 999px;
	white-space: nowrap;
}

/* ---------- 工具栏 ---------- */
.lis-toolbar {
	display: flex;
	flex-wrap: wrap;
	gap: 10px 12px;
	margin: 16px 0;
}

.lis-field {
	display: inline-flex;
	align-items: center;
	gap: 8px;
	padding: 5px 10px 5px 12px;
	background: var(--lis-surface);
	border: 1px solid var(--lis-border);
	border-radius: 11px;
	min-height: 38px;
}

.lis-label {
	font-size: 12px;
	font-weight: 600;
	color: var(--lis-text-dim);
	white-space: nowrap;
	letter-spacing: 0.2px;
}

/* 分段控件 */
.lis-seg {
	display: inline-flex;
	gap: 2px;
	padding: 2px;
	background: var(--lis-surface-2);
	border-radius: 8px;
}

.lis-seg button {
	padding: 4px 11px;
	font-size: 12.5px;
	font-weight: 500;
	color: var(--lis-text-dim);
	background: transparent;
	border: 0;
	border-radius: 6px;
	cursor: pointer;
	transition: background 0.18s ease, color 0.18s ease, box-shadow 0.18s ease;
}

.lis-seg button:hover { color: var(--lis-text); }

.lis-seg button.is-active {
	color: var(--lis-text);
	font-weight: 600;
	background: var(--lis-bg);
	box-shadow: 0 1px 3px rgba(20, 25, 40, 0.12);
}

/* 滑块 */
.lis-range {
	width: 108px;
	accent-color: var(--lis-primary);
	cursor: pointer;
}

.lis-val {
	min-width: 40px;
	font-size: 12px;
	color: var(--lis-text-dim);
	font-variant-numeric: tabular-nums;
	text-align: right;
}

/* 颜色选择 */
.lis-app input[type="color"] {
	width: 32px;
	height: 26px;
	padding: 0;
	background: none;
	border: 1px solid var(--lis-border-strong);
	border-radius: 7px;
	cursor: pointer;
	overflow: hidden;
}
.lis-app input[type="color"]::-webkit-color-swatch-wrapper { padding: 2px; }
.lis-app input[type="color"]::-webkit-color-swatch { border: 0; border-radius: 4px; }
.lis-app input[type="color"]::-moz-color-swatch { border: 0; border-radius: 4px; }

/* 下拉 */
.lis-app select {
	appearance: none;
	-webkit-appearance: none;
	padding: 5px 26px 5px 8px;
	font-size: 12.5px;
	color: var(--lis-text);
	background-color: transparent;
	background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
	background-repeat: no-repeat;
	background-position: right 6px center;
	border: 0;
	border-radius: 6px;
	cursor: pointer;
}
.lis-app select:focus-visible,
.lis-app input:focus-visible,
.lis-app button:focus-visible {
	outline: 2px solid var(--lis-primary);
	outline-offset: 2px;
}

/* ---------- 拖拽区 ---------- */
.lis-drop {
	position: relative;
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: 6px;
	padding: 28px 18px;
	text-align: center;
	color: var(--lis-text-dim);
	background: var(--lis-surface);
	border: 2px dashed var(--lis-border-strong);
	border-radius: 14px;
	cursor: pointer;
	transition: border-color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}

.lis-drop:hover {
	border-color: var(--lis-primary);
	background: color-mix(in srgb, var(--lis-primary) 4%, var(--lis-surface));
}

.lis-drop.is-over {
	border-color: var(--lis-primary);
	background: color-mix(in srgb, var(--lis-primary) 9%, var(--lis-surface));
	transform: scale(1.005);
}

.lis-drop-icon {
	color: var(--lis-primary);
	opacity: 0.85;
	transition: transform 0.25s ease;
}
.lis-drop.is-over .lis-drop-icon { transform: translateY(-3px) scale(1.06); }

.lis-drop-title { margin: 0; font-size: 13.5px; font-weight: 500; color: var(--lis-text); }

.lis-link {
	color: var(--lis-primary);
	font-weight: 600;
	text-decoration: underline;
	text-underline-offset: 3px;
}

.lis-hint { margin: 0; font-size: 12px; color: var(--lis-text-dim); }

/* ---------- 图片列表 ---------- */
.lis-list {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
	gap: 10px;
	margin-top: 16px;
}

.lis-list.is-hidden { display: none; }

.lis-item {
	display: flex;
	align-items: center;
	gap: 10px;
	padding: 8px;
	background: var(--lis-surface);
	border: 1px solid var(--lis-border);
	border-radius: 12px;
	cursor: grab;
	transition: border-color 0.18s ease, box-shadow 0.18s ease, opacity 0.18s ease, background 0.18s ease;
}

.lis-item:hover {
	border-color: color-mix(in srgb, var(--lis-primary) 45%, var(--lis-border));
	box-shadow: 0 4px 14px -8px rgba(20, 25, 40, 0.35);
}

.lis-item.is-dragging {
	opacity: 0.55;
	border-style: dashed;
	border-color: var(--lis-primary);
	background: color-mix(in srgb, var(--lis-primary) 6%, var(--lis-surface));
	cursor: grabbing;
}

.lis-item-grip {
	flex: none;
	width: 12px;
	height: 26px;
	color: var(--lis-text-dim);
	opacity: 0.55;
	background-image: radial-gradient(currentColor 1px, transparent 1.2px);
	background-size: 5px 5px;
	background-position: center;
	cursor: grab;
}

.lis-item-thumb {
	flex: none;
	width: 48px;
	height: 48px;
	object-fit: cover;
	background: var(--lis-surface-2);
	border: 1px solid var(--lis-border);
	border-radius: 8px;
	pointer-events: none;
}

.lis-item-meta { flex: 1; min-width: 0; }

.lis-item-name {
	font-size: 12.5px;
	font-weight: 600;
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
}

.lis-item-size {
	margin-top: 2px;
	font-size: 11.5px;
	color: var(--lis-text-dim);
	font-variant-numeric: tabular-nums;
}

/* ---------- 列表项操作按钮 ---------- */
.lis-item-actions {
	flex: none;
	display: inline-flex;
	align-items: center;
	gap: 2px;
}

.lis-item-move,
.lis-item-del {
	flex: none;
	display: grid;
	place-items: center;
	width: 26px;
	height: 26px;
	padding: 0;
	color: var(--lis-text-dim);
	background: transparent;
	border: 0;
	border-radius: 8px;
	cursor: pointer;
	transition: background 0.16s ease, color 0.16s ease, opacity 0.16s ease;
}

.lis-item-move svg {
	display: block;
	pointer-events: none;
}

/* 排序按钮：默认轻淡，hover 明显 */
.lis-item-move { opacity: 0.6; }
.lis-item-move:hover:not(:disabled) {
	opacity: 1;
	color: var(--lis-text);
	background: var(--lis-surface-2);
}
.lis-item-move:disabled {
	opacity: 0.22;
	cursor: not-allowed;
}

/* 删除按钮 */
.lis-item-del {
	opacity: 0.7;
	font-size: 13px;
	line-height: 1;
}
.lis-item-del:hover {
	opacity: 1;
	color: var(--lis-danger);
	background: rgba(229, 72, 77, 0.12);
}

/* 触摸设备：按钮放大、常显，方便手指点按 */
@media (pointer: coarse) {
	.lis-item-move,
	.lis-item-del {
		width: 32px;
		height: 32px;
	}
	.lis-item-move { opacity: 0.85; }
	.lis-item-del  { opacity: 0.9;  }
}

/* ---------- 预览 ---------- */
.lis-preview {
	display: grid;
	place-items: center;
	min-height: 130px;
	margin-top: 16px;
	padding: 14px;
	overflow: hidden;
	background-color: var(--lis-surface);
	background-image:
		linear-gradient(45deg, var(--lis-checker) 25%, transparent 25%),
		linear-gradient(-45deg, var(--lis-checker) 25%, transparent 25%),
		linear-gradient(45deg, transparent 75%, var(--lis-checker) 75%),
		linear-gradient(-45deg, transparent 75%, var(--lis-checker) 75%);
	background-size: 16px 16px;
	background-position: 0 0, 0 8px, 8px -8px, -8px 0;
	border: 1px solid var(--lis-border);
	border-radius: 14px;
}

.lis-empty {
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: 8px;
	padding: 26px 0;
	font-size: 13px;
	color: var(--lis-text-dim);
}
.lis-empty svg { opacity: 0.5; }

.lis-canvas {
	display: block;
	max-width: 100%;
	max-height: min(60vh, 560px);
	width: auto;
	height: auto;
	border-radius: 6px;
	box-shadow: 0 6px 20px -10px rgba(20, 25, 40, 0.4);
	transition: opacity 0.2s ease;
}

.lis-app.is-busy .lis-canvas { opacity: 0.45; }
.lis-app.is-busy .lis-drop { pointer-events: none; opacity: 0.75; }

/* ---------- 底部 ---------- */
.lis-footer {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	justify-content: space-between;
	gap: 12px;
	margin-top: 14px;
}

.lis-info {
	font-size: 12.5px;
	color: var(--lis-text-dim);
	font-variant-numeric: tabular-nums;
}

.lis-btns { display: flex; gap: 8px; }

.lis-btn {
	padding: 9px 18px;
	font-size: 13px;
	font-weight: 600;
	color: var(--lis-text);
	background: var(--lis-surface);
	border: 1px solid var(--lis-border-strong);
	border-radius: 10px;
	cursor: pointer;
	transition: background 0.16s ease, border-color 0.16s ease, transform 0.1s ease, box-shadow 0.16s ease, opacity 0.16s ease;
}

.lis-btn:hover { border-color: var(--lis-primary); }
.lis-btn:active { transform: translateY(1px); }

.lis-btn.is-primary {
	color: #fff;
	background: linear-gradient(135deg, var(--lis-primary), var(--lis-primary-2));
	border-color: transparent;
	box-shadow: 0 8px 18px -8px var(--lis-primary);
}

.lis-btn.is-primary:hover {
	filter: brightness(1.05);
	box-shadow: 0 10px 22px -8px var(--lis-primary);
}

.lis-btn:disabled {
	opacity: 0.45;
	cursor: not-allowed;
	box-shadow: none;
	transform: none;
	filter: none;
}

/* ---------- Toast ---------- */
.lis-toast {
	position: absolute;
	left: 50%;
	bottom: 16px;
	z-index: 5;
	transform: translate(-50%, 10px);
	padding: 8px 16px;
	font-size: 12.5px;
	font-weight: 500;
	color: #fff;
	background: rgba(24, 27, 33, 0.92);
	border-radius: 999px;
	box-shadow: 0 8px 24px -8px rgba(0, 0, 0, 0.5);
	opacity: 0;
	pointer-events: none;
	transition: opacity 0.22s ease, transform 0.22s ease;
	white-space: nowrap;
}
.lis-toast.is-show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- 深色模式 ---------- */
@media (prefers-color-scheme: dark) {
	.lis-app {
		--lis-bg: #17191f;
		--lis-surface: #1e2128;
		--lis-surface-2: #272b34;
		--lis-border: #2f3440;
		--lis-border-strong: #3c4250;
		--lis-text: #e9ebef;
		--lis-text-dim: #9aa3b2;
		--lis-primary: #6b8bff;
		--lis-primary-2: #a78bfa;
		--lis-danger: #ff6369;
		--lis-checker: rgba(255, 255, 255, 0.06);
		--lis-shadow: 0 12px 34px -14px rgba(0, 0, 0, 0.65), 0 2px 6px -2px rgba(0, 0, 0, 0.4);
	}
	.lis-badge {
		color: #4ade80;
		background: rgba(74, 222, 128, 0.1);
		border-color: rgba(74, 222, 128, 0.28);
	}
	.lis-seg button.is-active { box-shadow: 0 1px 3px rgba(0, 0, 0, 0.5); }
	.lis-app select {
		background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239aa3b2' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
	}
}

/* ---------- 响应式 ---------- */
@media (max-width: 640px) {
	.lis-app { padding: 15px; border-radius: 14px; }
	.lis-sub { display: none; }
	.lis-badge { display: none; }
	.lis-toolbar { gap: 8px; }
	.lis-field { flex: 1 1 auto; min-width: 0; }
	.lis-range { width: 100%; }
	.lis-list { grid-template-columns: 1fr; }
	.lis-footer { flex-direction: column; align-items: stretch; }
	.lis-btns { justify-content: flex-end; }
	.lis-btn { flex: 1; }
}

/* ---------- 减少动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
	.lis-app *,
	.lis-app *::before,
	.lis-app *::after {
		transition-duration: 0.01ms !important;
		animation-duration: 0.01ms !important;
	}
}