:root {
	/* --- Brand Colors --- */
	--gaac-green-main: #0d2830;   /* Deep teal/green from website */
	--gaac-green-light: #1f5f70;  /* Lighter accent teal */
	--gaac-green-dark: #061418;   /* Darker shade for hover/active */
	--gaac-gold: #f59e0b;         /* Warm gold for accents */
	
	/* --- Neutral Colors --- */
	--gaac-dark: #1f2937;         /* Dark gray for primary text */
	--gaac-muted: #6b7280;        /* Muted gray for secondary text */
	--gaac-bg: #f3f4f6;           /* Light gray background for the app */
	--gaac-card-bg: #ffffff;      /* White for cards */
	--gaac-border: #e5e7eb;       /* Light border color */
	
	/* --- Functional Colors --- */
	--gaac-danger: #dc2626;       /* Red for errors/danger */
	--gaac-warning: #d97706;      /* Amber for warnings */
	--gaac-info: #2563eb;         /* Blue for info */

	/* --- Tag/Badge Colors (Requested) --- */
	--tag-student-bg: #eff6ff;
	--tag-student-text: #1e40af;
	--tag-student-border: #bfdbfe;

	--tag-guardian-bg: #ecfeff;   /* Cyan for Guardians to distinguish from Students */
	--tag-guardian-text: #0e7490;
	--tag-guardian-border: #a5f3fc;

	--tag-teacher-bg: #f5f3ff;
	--tag-teacher-text: #5b21b6;
	--tag-teacher-border: #ddd6fe;

	--tag-course-bg: #f0fdf4;
	--tag-course-text: #15803d;
	--tag-course-border: #bbf7d0;

	--tag-sibling-bg: #fdf4ff;
	--tag-sibling-text: #86198f;
	--tag-sibling-border: #f0abfc;

	--tag-sub-teacher-bg: #fff7ed;
	--tag-sub-teacher-text: #9a3412;
	--tag-sub-teacher-border: #ffedd5;

	/* --- Course Tag Badge --- */
	--tag-badge-bg: #f3f4f6;
	--tag-badge-text: #374151;
	--tag-badge-border: #d1d5db;

	/* --- Spacing & Radius --- */
	--gaac-radius-lg: 0.75rem;
	--gaac-radius-md: 0.5rem;
	--gaac-radius-sm: 0.375rem;
	--gaac-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
	--gaac-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
	--gaac-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

body {
	background-color: var(--gaac-bg);
	color: var(--gaac-dark);
	font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
	line-height: 1.6;
	-webkit-font-smoothing: antialiased;
	padding-bottom: 40px;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
	color: var(--gaac-dark);
	font-weight: 700;
	letter-spacing: -0.025em;
	margin-bottom: 0.75rem;
}

.text-muted, .small {
	color: var(--gaac-muted) !important;
}

/* --- Navbar --- */
.navbar {
	background-color: #ffffff;
	border-bottom: 1px solid var(--gaac-border);
	box-shadow: var(--gaac-shadow-sm);
	padding-top: 0.75rem;
	padding-bottom: 0.75rem;
}

.navbar-brand {
	font-weight: 800;
	letter-spacing: 0.05em;
	color: var(--gaac-green-main) !important;
	text-transform: uppercase;
	font-size: 1.1rem;
	display: flex;
	align-items: center;
}

.navbar-brand span {
	background: linear-gradient(to right, var(--gaac-green-main), var(--gaac-green-light));
	background-clip: text;
	-webkit-background-clip: text;
	-webkit-text-fill-color: transparent;
}

.navbar .nav-link {
	color: var(--gaac-muted);
	font-weight: 600;
	font-size: 0.9rem;
	padding: 0.5rem 1rem;
	border-radius: var(--gaac-radius-md);
	transition: all 0.2s ease;
}

.navbar .nav-link:hover {
	color: var(--gaac-green-main);
	background-color: #f0fdf4; /* Very light green bg on hover */
}

.navbar .nav-link.active {
	color: var(--gaac-green-main);
	background-color: #dcfce7;
}

.navbar-text {
	color: var(--gaac-muted) !important;
	font-weight: 500;
}

/* --- Cards --- */
.card {
	border: 1px solid var(--gaac-border);
	border-radius: var(--gaac-radius-lg);
	background-color: var(--gaac-card-bg);
	box-shadow: var(--gaac-shadow);
	transition: transform 0.2s ease, box-shadow 0.2s ease;
	overflow: hidden; /* Ensure children don't overflow rounded corners */
}

.card:hover {
	box-shadow: var(--gaac-shadow-lg);
}

.card-header {
	background-color: #ffffff;
	border-bottom: 1px solid var(--gaac-border);
	padding: 1rem 1.5rem;
	font-weight: 700;
	color: var(--gaac-dark);
}

/* Special header for main sections if needed */
.card-header.bg-primary,
.card-header.bg-success,
.card-header.card-header-main {
	background: linear-gradient(135deg, var(--gaac-green-main), var(--gaac-green-dark)) !important;
	color: #ffffff !important;
	border-bottom: none;
}

.card-header.bg-primary h4,
.card-header.bg-primary h5,
.card-header.bg-success h4,
.card-header.bg-success h5,
.card-header.card-header-main h4,
.card-header.card-header-main h5 {
	color: #ffffff !important;
	margin-bottom: 0;
}

.card-body {
	padding: 1.5rem;
}

/* --- Buttons --- */
.btn {
	border-radius: var(--gaac-radius-md);
	font-weight: 600;
	padding: 0.5rem 1rem;
	transition: all 0.2s ease;
	letter-spacing: 0.01em;
}

.btn-primary, .btn-success {
	background-color: var(--gaac-green-main);
	border-color: var(--gaac-green-main);
	color: #ffffff;
}

.btn-primary:hover, .btn-primary:focus,
.btn-success:hover, .btn-success:focus {
	background-color: var(--gaac-green-dark);
	border-color: var(--gaac-green-dark);
	box-shadow: 0 4px 6px -1px rgba(46, 125, 50, 0.3);
}

.btn-outline-primary, .btn-outline-success {
	color: var(--gaac-green-main);
	border-color: var(--gaac-green-main);
	background-color: transparent;
}

.btn-outline-primary:hover, .btn-outline-success:hover {
	background-color: var(--gaac-green-main);
	color: #ffffff;
}

.btn-light {
	background-color: #ffffff;
	border-color: var(--gaac-border);
	color: var(--gaac-dark);
}

.btn-light:hover {
	background-color: #f9fafb;
	border-color: #d1d5db;
}

/* --- Forms --- */
.form-control, .form-select {
	border-radius: var(--gaac-radius-md);
	border-color: var(--gaac-border);
	padding: 0.6rem 1rem;
	font-size: 0.95rem;
	transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.form-control:focus, .form-select:focus {
	border-color: var(--gaac-green-main);
	box-shadow: 0 0 0 3px rgba(46, 125, 50, 0.15);
}

.form-label {
	font-weight: 600;
	color: var(--gaac-dark);
	margin-bottom: 0.5rem;
}

/* --- Badges / Tags --- */
.badge {
	padding: 0.35em 0.8em;
	font-weight: 600;
	border-radius: 9999px;
	font-size: 0.75rem;
	letter-spacing: 0.025em;
	border: 1px solid transparent;
}

/* Student Tag */
.badge-student, .badge-student-outline {
	background-color: var(--tag-student-bg);
	color: var(--tag-student-text);
	border: 1px solid var(--tag-student-border);
}

/* Guardian Tag */
.badge-guardian, .badge-guardian-outline {
	background-color: var(--tag-guardian-bg);
	color: var(--tag-guardian-text);
	border: 1px solid var(--tag-guardian-border);
}

/* Teacher Tag */
.badge-teacher, .badge-teacher-outline {
	background-color: var(--tag-teacher-bg);
	color: var(--tag-teacher-text);
	border: 1px solid var(--tag-teacher-border);
}

/* Sub-Teacher Tag */
.badge-sub-teacher, .badge-sub-teacher-outline {
	background-color: var(--tag-sub-teacher-bg);
	color: var(--tag-sub-teacher-text);
	border: 1px solid var(--tag-sub-teacher-border);
}

/* Course Tag */
.badge-course, .badge-course-outline {
	background-color: var(--tag-course-bg);
	color: var(--tag-course-text);
	border: 1px solid var(--tag-course-border);
}

/* Sibling Tag */
.badge-sibling, .badge-sibling-outline {
	background-color: var(--tag-sibling-bg);
	color: var(--tag-sibling-text);
	border: 1px solid var(--tag-sibling-border);
}

/* Custom Tag Badge */
.badge-tag {
	background-color: var(--tag-badge-bg);
	color: var(--tag-badge-text);
	border: 1px solid var(--tag-badge-border);
	font-weight: 500;
}

/* Outline variants if needed */
.badge-outline {
	background-color: transparent;
}

/* --- Tables --- */
.table {
	margin-bottom: 0;
	color: var(--gaac-dark);
}

.table th {
	font-weight: 600;
	text-transform: uppercase;
	font-size: 0.75rem;
	letter-spacing: 0.05em;
	color: var(--gaac-muted);
	background-color: #f9fafb;
	border-bottom: 1px solid var(--gaac-border);
	padding: 0.75rem 1rem;
}

.table td {
	padding: 1rem;
	vertical-align: middle;
	border-bottom: 1px solid var(--gaac-border);
}

.table-hover tbody tr:hover {
	background-color: #f9fafb;
}

/* --- Utilities --- */
.bg-app-gradient {
	background-color: var(--gaac-bg);
	/* Subtle pattern or gradient if desired, but solid is cleaner for "System" look */
	background-image: radial-gradient(#e5e7eb 1px, transparent 1px);
	background-size: 20px 20px;
}

.bg-login-gradient {
	/* Background image with a dark teal overlay for readability and brand consistency */
	background: linear-gradient(135deg, rgba(6, 20, 24, 0.85) 0%, rgba(13, 40, 48, 0.8) 100%), url('login_background.webp');
	background-size: cover;
	background-position: center;
	background-repeat: no-repeat;
	background-attachment: fixed;
}

.shadow-soft {
	box-shadow: var(--gaac-shadow);
}

.text-primary-app {
	color: var(--gaac-green-main) !important;
}

.border-primary-app {
	border-color: var(--gaac-green-main) !important;
}

/* --- Contextual Backgrounds --- */
.bg-primary {
	background-color: var(--gaac-green-main) !important;
	color: #ffffff;
}

.bg-success {
	background-color: var(--gaac-green-light) !important;
	color: #ffffff;
}

.bg-info {
	background-color: var(--gaac-info) !important;
	color: #ffffff;
}

.bg-warning {
	background-color: var(--gaac-warning) !important;
	color: #ffffff;
}

.bg-danger {
	background-color: var(--gaac-danger) !important;
	color: #ffffff;
}

/* --- Animations --- */
@keyframes fadeIn {
	from { opacity: 0; transform: translateY(10px); }
	to { opacity: 1; transform: translateY(0); }
}

.fade-in {
	animation: fadeIn 0.4s ease-out forwards;
}