/**
 * Collapse Modules — front-end styles (modern, mobile-friendly).
 */

.collapse-modules {
	margin: 0 0 20px;
}

.collapse-item {
	background: #fff;
	border: 1px solid #e5e7eb;
	border-radius: 12px;
	margin-bottom: 12px;
	overflow: hidden;
	box-shadow: 0 1px 3px rgba(17, 24, 39, 0.05);
}

.collapse-item:last-child {
	margin-bottom: 0;
}

.collapse-header {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 12px;
	width: 100%;
	margin: 0;
	padding: 16px 18px;
	background: #fff;
	border: none;
	box-shadow: none;
	-webkit-appearance: none;
	appearance: none;
	cursor: pointer;
	text-align: left;
	font-family: inherit;
	font-size: 16px;
	font-weight: 700;
	line-height: 1.45;
	color: #111827;
	transition: background 0.2s ease;
}

.collapse-header:hover,
.collapse-item.is-open .collapse-header {
	background: #f9fafb;
}

.collapse-header:focus-visible {
	outline: 2px solid #BB0713;
	outline-offset: -2px;
}

.collapse-title {
	flex: 1 1 auto;
	min-width: 0;
	overflow-wrap: anywhere;
}

.collapse-icon {
	display: inline-flex;
	flex-shrink: 0;
	color: #BB0713;
	transition: transform 0.25s ease;
}

.collapse-item.is-open .collapse-icon {
	transform: rotate(180deg);
}

/* Smooth expand/collapse via grid-template-rows (0fr -> 1fr). */
.collapse-body {
	display: grid;
	grid-template-rows: 0fr;
	transition: grid-template-rows 0.28s ease;
}

.collapse-item.is-open .collapse-body {
	grid-template-rows: 1fr;
}

.collapse-content {
	min-height: 0;
	overflow: hidden;
	padding: 0 18px;
	color: #374151;
	line-height: 1.7;
	transition: padding 0.28s ease;
}

.collapse-item.is-open .collapse-content {
	padding: 4px 18px 18px;
	border-top: 1px solid #f2f4f7;
}

.collapse-content > *:first-child {
	margin-top: 12px;
}

.collapse-content > *:last-child {
	margin-bottom: 0;
}

@media (max-width: 640px) {
	.collapse-header {
		padding: 14px;
		font-size: 15px;
	}

	.collapse-content {
		padding: 0 14px;
	}

	.collapse-item.is-open .collapse-content {
		padding: 4px 14px 14px;
	}
}

@media (prefers-reduced-motion: reduce) {
	.collapse-body,
	.collapse-icon,
	.collapse-content,
	.collapse-header {
		transition: none;
	}
}