/**
 * CAS Layout — sidebar, header, portal shell.
 *
 * @package College_Aptitude_Suite
 */

.cas-portal {
	display: flex;
	min-height: 100vh;
	font-family: var(--cas-font);
	color: var(--cas-text);
	background: var(--cas-bg);
}

/* Sidebar */
.cas-sidebar {
	width: var(--cas-sidebar-width);
	background: var(--cas-surface);
	border-right: 1px solid var(--cas-border);
	display: flex;
	flex-direction: column;
	position: fixed;
	top: 0;
	left: 0;
	height: 100vh;
	z-index: 1000;
	transition: transform var(--cas-transition);
}

.cas-sidebar__brand {
	display: flex;
	align-items: center;
	gap: 12px;
	padding: 24px 20px;
	border-bottom: 1px solid var(--cas-border);
}

.cas-sidebar__logo {
	width: 42px;
	height: 42px;
	background: linear-gradient(135deg, var(--cas-secondary, #2f3b4a), var(--cas-primary));
	color: #fff;
	border-radius: 12px;
	display: flex;
	align-items: center;
	justify-content: center;
	font-weight: 800;
	font-size: 14px;
	letter-spacing: -0.5px;
	flex-shrink: 0;
}

.cas-sidebar__brand-text {
	display: flex;
	flex-direction: column;
	line-height: 1.3;
}

.cas-sidebar__brand-text strong {
	font-size: 14px;
	font-weight: 700;
	color: var(--cas-text);
}

.cas-sidebar__brand-text span {
	font-size: 11px;
	color: var(--cas-muted);
	font-weight: 500;
}

.cas-sidebar__nav {
	flex: 1;
	padding: 16px 12px;
	overflow-y: auto;
}

.cas-sidebar__link {
	display: flex;
	align-items: center;
	gap: 12px;
	padding: 11px 14px;
	border-radius: var(--cas-radius-sm);
	color: var(--cas-text-secondary) !important;
	text-decoration: none !important;
	font-size: 14px;
	font-weight: 500;
	margin-bottom: 4px;
	transition: background var(--cas-transition), color var(--cas-transition);
}

.cas-sidebar__link:hover {
	background: var(--cas-primary-bg);
	color: var(--cas-primary) !important;
}

.cas-sidebar__link.is-active {
	background: var(--cas-primary-bg);
	color: var(--cas-primary) !important;
	font-weight: 600;
}

.cas-sidebar__icon {
	width: 20px;
	height: 20px;
	flex-shrink: 0;
}

.cas-sidebar__icon svg {
	width: 20px;
	height: 20px;
}

.cas-sidebar__footer {
	padding: 16px;
	border-top: 1px solid var(--cas-border);
}

.cas-sidebar__user {
	display: flex;
	align-items: center;
	gap: 10px;
	margin-bottom: 12px;
}

.cas-sidebar__user strong {
	display: block;
	font-size: 13px;
	font-weight: 600;
	color: var(--cas-text);
}

.cas-sidebar__user span {
	display: block;
	font-size: 11px;
	color: var(--cas-muted);
	max-width: 160px;
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
}

.cas-sidebar__logout {
	display: block;
	text-align: center;
	padding: 8px;
	font-size: 13px;
	color: var(--cas-danger) !important;
	text-decoration: none !important;
	border-radius: 8px;
	transition: background var(--cas-transition);
}

.cas-sidebar__logout:hover {
	background: var(--cas-danger-bg);
}

/* Main area */
.cas-main {
	flex: 1;
	margin-left: var(--cas-sidebar-width);
	display: flex;
	flex-direction: column;
	min-height: 100vh;
}

.cas-header {
	display: flex;
	align-items: center;
	gap: 16px;
	padding: 16px 28px;
	background: var(--cas-surface);
	border-bottom: 1px solid var(--cas-border);
	position: sticky;
	top: 0;
	z-index: 100;
}

.cas-header__menu-btn {
	display: none;
	flex-direction: column;
	gap: 5px;
	background: none;
	border: none;
	cursor: pointer;
	padding: 6px;
}

.cas-header__menu-btn span {
	display: block;
	width: 22px;
	height: 2px;
	background: var(--cas-text);
	border-radius: 2px;
}

.cas-header__titles { flex: 1; }

.cas-header__title {
	font-size: 22px;
	font-weight: 700;
	margin: 0;
	color: var(--cas-text);
	letter-spacing: -0.3px;
}

.cas-header__subtitle {
	font-size: 14px;
	color: var(--cas-muted);
	margin: 2px 0 0;
}

.cas-header__actions {
	display: flex;
	align-items: center;
	gap: 10px;
}

.cas-content {
	padding: 28px;
	flex: 1;
}

/* Exam fullscreen — hide sidebar */
.cas-portal.cas-exam-mode .cas-sidebar { display: none; }
.cas-portal.cas-exam-mode .cas-main { margin-left: 0; }
.cas-portal.cas-exam-mode .cas-header { padding: 12px 20px; }

/* Mobile */
@media (max-width: 900px) {
	.cas-sidebar {
		transform: translateX(-100%);
	}

	.cas-sidebar.is-open {
		transform: translateX(0);
		box-shadow: var(--cas-shadow-lg);
	}

	.cas-main { margin-left: 0; }

	.cas-header__menu-btn { display: flex; }

	.cas-content { padding: 16px; }
}

/* Exam mode has no sidebar toggle needed */
.cas-portal.cas-exam-mode .cas-header__menu-btn { display: none; }