/* Collapsible section title */
.collapse-title {
	padding: 15px;
	background-color: #f9f9f9;
	border-bottom: 1px solid #ddd;
	font-weight: 600;
	font-size: 16px;
	cursor: pointer;
	position: relative;
	display: flex;
	align-items: center;
}

.btn-collapse {
	margin-left: auto;
	color: #555;
	transition: transform 0.3s;
}

.btn-collapse:hover {
	text-decoration: none;
}

/* caret states (uses FA 5 pseudo content) */
.btn-collapse:not(.collapsed) .collapse-span:after {
	content: "\f077"; /* up caret */
	font-family: "Font Awesome 5 Free", sans-serif;
	font-weight: 900;
}

.btn-collapse.collapsed .collapse-span:after {
	content: "\f078"; /* down caret */
	font-family: "Font Awesome 5 Free", sans-serif;
	font-weight: 900;
}

/* Loader styles */
.loader-wrap {
	display: flex;
	align-items: center;
	justify-content: center;
	gap: 10px;
	color: #555;
	font-weight: 600;
	width: 100%;
	text-align: center;
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	background-color: rgba(255, 255, 255, 0.9);
	z-index: 10;
}

/* Parent containers need relative positioning for absolute loader positioning */
#collapseADCP,
#collapseADCP_Sv {
	position: relative;
}

/* Specific heights for ADCP loaders to match their containers */
.adcp-east-loader-wrap,
.adcp-north-loader-wrap {
	min-height: 300px;
}

.adcp-sv-loader-wrap {
	min-height: 295px;
}
.loader-wrap.hidden {
	display: none !important;
}
.loader-icon {
	width: 20px;
	height: 20px;
	border: 3px solid rgba(0,0,0,0.15);
	border-top-color: rgba(0,0,0,0.7);
	border-radius: 50%;
	animation: loader-spin 0.9s linear infinite;
	flex: 0 0 20px;
}
@keyframes loader-spin {
	from { transform: rotate(0deg); }
	to   { transform: rotate(360deg); }
}