* {
	box-sizing: border-box;
	margin: 0;
	padding: 0;
}

body {
	font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
	background-image: linear-gradient(0deg, #eee 1px, transparent 0),
		linear-gradient(90deg, #eee 1px, transparent 0);
	background-size: 30px 30px;
	color: #333;
	min-height: 100dvh;
	overflow: hidden;
}

body.is-mobile {
	overflow-y: auto;
}

#board {
	position: relative;
	width: 100vw;
	height: 100dvh;
	overflow: hidden;
}

body.is-mobile #board {
	height: auto;
	min-height: 100dvh;
}

.card {
	position: absolute;
	width: 220px;
	border-radius: 12px;
	box-shadow: 0 16px 35px rgba(0, 0, 0, 0.2);
	background: #fff;
	border: 1px solid rgba(0, 0, 0, 0.08);
	overflow: hidden;
	opacity: 0;
	transform-origin: center;
	transition: transform 0.35s ease, opacity 0.35s ease, left 0.35s ease,
		top 0.35s ease, width 0.35s ease, height 0.35s ease,
		border-radius 0.35s ease;
}

.card.dragging {
	transition: none;
	box-shadow: 0 22px 45px rgba(0, 0, 0, 0.35);
}

.card.maximized {
	box-shadow: 0 28px 60px rgba(0, 0, 0, 0.4);
}

.card-header {
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: 10px 12px;
	background: rgba(255, 255, 255, 0.7);
	cursor: grab;
	user-select: none;
	touch-action: pan-y;
}

.card-header.dragging {
	cursor: grabbing;
}

.window-controls {
	display: flex;
	align-items: center;
	gap: 6px;
}

.window-controls .control {
	position: relative;
	width: 12px;
	height: 12px;
	border-radius: 50%;
	border: 1px solid rgba(0, 0, 0, 0.08);
	background: #ccc;
	cursor: pointer;
	outline: none;
	padding: 0;
	display: inline-flex;
	align-items: center;
	justify-content: center;
}

.window-controls .control.close {
	background: #ff5f57;
	border-color: #e0443e;
}

.window-controls .control.minimize {
	background: #febb2e;
	border-color: #dea123;
}

.window-controls .control.maximize {
	background: #28c840;
	border-color: #1aab2c;
}

.window-controls .control::after {
	content: '';
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	opacity: 0;
	transition: opacity 0.2s ease;
}

.card-header:hover .window-controls .control::after {
	opacity: 0.8;
}

.window-controls .control.close::after {
	content: '×';
	width: auto;
	height: auto;
	background: none;
	font-size: 10px;
	line-height: 1;
	font-weight: 700;
	color: rgba(0, 0, 0, 0.7);
}

.window-controls .control.minimize::after {
	width: 6px;
	height: 2px;
	background: rgba(0, 0, 0, 0.6);
}

.window-controls .control.maximize::after {
	width: 6px;
	height: 6px;
	background: linear-gradient(
		45deg,
		rgba(0, 0, 0, 0.6) 0%,
		rgba(0, 0, 0, 0.6) 45%,
		transparent 45%,
		transparent 55%,
		rgba(0, 0, 0, 0.6) 55%,
		rgba(0, 0, 0, 0.6) 100%
	);
}

.card-title {
	font-size: 13px;
	font-weight: 600;
	color: rgba(0, 0, 0, 0.55);
	padding-left: 10px;
	flex: 1;
}

.card-body {
	padding: 16px;
	font-size: 16px;
	line-height: 1.4;
	font-weight: 600;
	color: rgba(0, 0, 0, 0.72);
}

/* 设置按钮 */
.settings-btn {
	width: 36px;
	height: 36px;
	border-radius: 50%;
	background: rgba(0, 0, 0, 0.05);
	border: none;
	cursor: pointer;
	display: flex;
	align-items: center;
	justify-content: center;
	font-size: 18px;
	transition: transform 0.2s ease, background 0.2s ease;
	color: #666;
}

.settings-btn:hover {
	transform: scale(1.05);
	background: rgba(0, 0, 0, 0.1);
}

.settings-btn:active {
	transform: scale(0.95);
}

/* 设置面板 */
.settings-panel {
	position: fixed;
	bottom: 90px;
	left: 50%;
	transform: translateX(-50%) translateY(20px);
	width: 320px;
	background: rgba(255, 255, 255, 0.98);
	border-radius: 16px;
	box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
	padding: 24px;
	z-index: 10001;
	opacity: 0;
	pointer-events: none;
	transition: opacity 0.3s ease, transform 0.3s ease;
}

.settings-panel.show {
	opacity: 1;
	transform: translateX(-50%) translateY(0);
	pointer-events: all;
}

.settings-panel h3 {
	font-size: 18px;
	margin-bottom: 20px;
	color: #333;
}

.setting-item {
	margin-bottom: 20px;
}

.setting-item label {
	display: block;
	font-size: 14px;
	color: #666;
	margin-bottom: 8px;
	font-weight: 500;
}

.setting-item input[type="range"] {
	width: 100%;
	height: 6px;
	border-radius: 3px;
	background: #e0e0e0;
	outline: none;
	-webkit-appearance: none;
}

.setting-item input[type="range"]::-webkit-slider-thumb {
	-webkit-appearance: none;
	appearance: none;
	width: 18px;
	height: 18px;
	border-radius: 50%;
	background: #28c840;
	cursor: pointer;
	box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.setting-item input[type="range"]::-moz-range-thumb {
	width: 18px;
	height: 18px;
	border-radius: 50%;
	background: #28c840;
	cursor: pointer;
	border: none;
	box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.setting-item .value-display {
	display: inline-block;
	margin-left: 8px;
	font-weight: 600;
	color: #28c840;
}

.setting-item .toggle-switch {
	position: relative;
	display: inline-block;
	width: 50px;
	height: 26px;
}

.setting-item .toggle-switch input {
	opacity: 0;
	width: 0;
	height: 0;
}

.setting-item .slider {
	position: absolute;
	cursor: pointer;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	background-color: #ccc;
	transition: 0.3s;
	border-radius: 26px;
}

.setting-item .slider:before {
	position: absolute;
	content: "";
	height: 18px;
	width: 18px;
	left: 4px;
	bottom: 4px;
	background-color: white;
	transition: 0.3s;
	border-radius: 50%;
}

.setting-item input:checked + .slider {
	background-color: #28c840;
}

.setting-item input:checked + .slider:before {
	transform: translateX(24px);
}

/* 音乐播放器 */
.music-player {
	position: fixed;
	bottom: 20px;
	left: 50%;
	transform: translateX(-50%);
	background: rgba(255, 255, 255, 0.95);
	border-radius: 16px;
	box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
	padding: 16px 20px;
	display: flex;
	align-items: center;
	gap: 16px;
	z-index: 10000;
	min-width: 380px;
}

.music-player .track-info {
	flex: 1;
	min-width: 0;
}

.music-player .track-name {
	font-size: 14px;
	font-weight: 600;
	color: #333;
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
}

.music-player .track-artist {
	font-size: 12px;
	color: #999;
	margin-top: 2px;
}

.music-player .controls {
	display: flex;
	align-items: center;
	gap: 12px;
}

.music-player button {
	width: 36px;
	height: 36px;
	border-radius: 50%;
	border: none;
	background: #28c840;
	color: white;
	cursor: pointer;
	display: flex;
	align-items: center;
	justify-content: center;
	font-size: 16px;
	transition: transform 0.2s ease, background 0.2s ease;
}

.music-player button:hover {
	transform: scale(1.05);
	background: #1aab2c;
}

.music-player button:active {
	transform: scale(0.95);
}

.music-player button.prev,
.music-player button.next {
	width: 32px;
	height: 32px;
	background: rgba(0, 0, 0, 0.05);
	color: #666;
	font-size: 14px;
}

.music-player button.prev:hover,
.music-player button.next:hover {
	background: rgba(0, 0, 0, 0.1);
}

.music-player .volume-control {
	display: flex;
	align-items: center;
	gap: 8px;
}

.music-player .volume-control input[type="range"] {
	width: 80px;
	height: 4px;
	border-radius: 2px;
	background: #e0e0e0;
	outline: none;
	-webkit-appearance: none;
}

.music-player .volume-control input[type="range"]::-webkit-slider-thumb {
	-webkit-appearance: none;
	appearance: none;
	width: 14px;
	height: 14px;
	border-radius: 50%;
	background: #28c840;
	cursor: pointer;
}

.music-player .volume-control input[type="range"]::-moz-range-thumb {
	width: 14px;
	height: 14px;
	border-radius: 50%;
	background: #28c840;
	cursor: pointer;
	border: none;
}

/* 欢迎遮罩 */
.welcome-overlay {
	position: fixed;
	top: 0;
	left: 0;
	width: 100vw;
	height: 100vh;
	background: rgba(238, 238, 238, 0.15);
	backdrop-filter: blur(30px) saturate(180%);
	-webkit-backdrop-filter: blur(30px) saturate(180%);
	display: flex;
	align-items: center;
	justify-content: center;
	z-index: 100000;
	opacity: 1;
	transition: opacity 0.5s ease;
}

.welcome-overlay.hidden {
	opacity: 0;
	pointer-events: none;
}

.welcome-card {
	background: rgba(255, 255, 255, 0.75);
	backdrop-filter: blur(10px);
	-webkit-backdrop-filter: blur(10px);
	padding: 48px 60px;
	border-radius: 20px;
	box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
	text-align: center;
	animation: welcomeFloat 0.6s ease;
	border: 1px solid rgba(255, 255, 255, 0.5);
}

@keyframes welcomeFloat {
	from {
		opacity: 0;
		transform: translateY(30px) scale(0.95);
	}
	to {
		opacity: 1;
		transform: translateY(0) scale(1);
	}
}

.welcome-emoji {
	font-size: 64px;
	margin-bottom: 20px;
	animation: wave 1s ease infinite;
}

@keyframes wave {
	0%, 100% {
		transform: rotate(0deg);
	}
	25% {
		transform: rotate(20deg);
	}
	75% {
		transform: rotate(-20deg);
	}
}

.welcome-title {
	font-size: 36px;
	font-weight: 700;
	color: rgba(0, 0, 0, 0.8);
	margin-bottom: 32px;
	letter-spacing: 1px;
}

.enter-btn {
	padding: 14px 40px;
	font-size: 16px;
	font-weight: 600;
	color: rgba(0, 0, 0, 0.7);
	background: #ffd8a8;
	border: 2px solid rgba(0, 0, 0, 0.08);
	border-radius: 12px;
	cursor: pointer;
	box-shadow: 0 4px 12px rgba(255, 216, 168, 0.4);
	transition: all 0.2s ease;
	outline: none;
}

.enter-btn:hover {
	transform: translateY(-2px);
	box-shadow: 0 8px 20px rgba(255, 216, 168, 0.5);
	background: #ffc98a;
}

.enter-btn:active {
	transform: translateY(0);
	box-shadow: 0 2px 8px rgba(255, 216, 168, 0.4);
}

@media (max-width: 768px) {
	.card {
		width: 180px;
		border-radius: 10px;
	}

	.card-body {
		padding: 14px;
		font-size: 14px;
	}

	.card-title {
		font-size: 12px;
	}

	.settings-panel {
		width: calc(100vw - 40px);
		bottom: 80px;
	}

	.music-player {
		width: calc(100vw - 40px);
		min-width: auto;
		flex-wrap: wrap;
		padding: 12px 16px;
	}

	.music-player .volume-control {
		width: 100%;
		justify-content: center;
	}

	.music-player .volume-control input[type="range"] {
		flex: 1;
		max-width: 200px;
	}

	.welcome-card {
		padding: 40px 48px;
		border-radius: 16px;
	}

	.welcome-emoji {
		font-size: 56px;
	}

	.welcome-title {
		font-size: 28px;
		margin-bottom: 28px;
	}

	.enter-btn {
		padding: 12px 36px;
		font-size: 15px;
	}
}