/*----------------------------
	knobKnob Styles
-----------------------------*/
.knob{
	width: 100px;
	height: 100px;
	position: relative;
}

.knob .top{
	position: absolute;
	width: 100%;
	height: 100%;
	background: url(../images/knob.jpg) no-repeat center center;
	z-index: 10;
	cursor: default !important;
	border-radius: 50%;
	box-shadow: inset 0 0 3px 2px rgba(255,255,255,0.6);
}

/* ===== 歌单按钮 - 位于音量旋钮正中间 ===== */
.knob .playlist-btn {
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	z-index: 20;
	width: 44px;
	height: 44px;
	border-radius: 50%;
	background: rgba(20, 18, 16, 0.85);
	border: 2px solid rgba(200, 180, 150, 0.4);
	color: #e0d8c8;
	font-size: 18px;
	cursor: pointer;
	display: flex;
	align-items: center;
	justify-content: center;
	transition: all 0.3s ease;
	box-shadow: 0 2px 12px rgba(0,0,0,0.6), inset 0 1px 0 rgba(255,255,255,0.05);
	pointer-events: auto !important;
	user-select: none;
	padding: 0;
	line-height: 1;
}
.knob .playlist-btn:hover {
	background: rgba(60, 55, 50, 0.95);
	border-color: #f0c850;
	transform: translate(-50%, -50%) scale(1.12);
	box-shadow: 0 0 30px rgba(240, 200, 80, 0.3), inset 0 1px 0 rgba(255,255,255,0.1);
}
.knob .playlist-btn:active {
	transform: translate(-50%, -50%) scale(0.92);
}
.knob .playlist-btn .icon {
	font-size: 20px;
	margin-top: 1px;
}
/* 歌单按钮上的小光晕提示 */
.knob .playlist-btn::after {
	content: '';
	position: absolute;
	top: -4px;
	right: -4px;
	width: 14px;
	height: 14px;
	background: radial-gradient(circle, rgba(240, 200, 80, 0.4), transparent);
	border-radius: 50%;
	animation: pulseDot 2s ease-in-out infinite;
}
@keyframes pulseDot {
	0%, 100% { opacity: 0.4; transform: scale(1); }
	50% { opacity: 1; transform: scale(1.3); }
}

.knob .base{
	width: 100%;
	height: 100%;
	box-shadow: 0 5px 0 #555, 0px 5px 5px black;
	position: absolute;
	z-index: 1;
	border-radius: 50%;
}

.knob .top:after{
	content: '';
	width: 4px;
	height: 4px;
	background-color: #666;
	position: absolute;
	top: 50%;
	margin-top: -2px;
	left: 4px;
	border-radius: 50%;
	cursor: default !important;
	box-shadow:  
		0 0 1px #5a5a5a inset, 
		1px -1px 1px rgba(255,255,255,0.5);
}

.knob [draggable] {
  -moz-user-select:  none;
  -webkit-user-select:  none;
  user-select:  none;
}

/* 适配小屏幕 */
@media (max-width: 600px) {
	.knob .playlist-btn {
		width: 34px;
		height: 34px;
		font-size: 14px;
	}
	.knob .playlist-btn .icon {
		font-size: 15px;
	}
	.knob .playlist-btn::after {
		width: 10px;
		height: 10px;
		top: -3px;
		right: -3px;
	}
}