/* ============================================
   AAKRITI CLASSES - UNIFIED THEME
   Consistent styling across Admin and Public areas
   ============================================ */

:root {
    --primary-color: #667eea;
    --primary-dark: #764ba2;
    --secondary-color: #0dcaf0;
    --success-color: #198754;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #0dcaf0;
    --light-color: #f8f9fa;
    --dark-color: #212529;
    --border-radius: 8px;
    --box-shadow: 0 2px 8px rgba(102, 126, 234, 0.1);
    --transition: all 0.3s ease;
    --header-color: #667eea;
}

/* ============================================
   GLOBAL STYLES
   ============================================ */

* {
    --bs-primary: #667eea;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #333;
    background-color: #f8f9fa;
}

/* ============================================
   NAVBAR STYLES (Public Area)
   ============================================ */

.navbar {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    background-color: #fff !important;
}

/* Colorful gradient navbar */
.navbar-gradient {
    background: linear-gradient(90deg, #667eea 0%, #764ba2 40%, #00f2fe 100%);
    color: white;
}
.navbar-gradient .nav-link { color: rgba(255,255,255,0.9) !important; }
.navbar-gradient .nav-link:hover { color: #fff !important; }
.navbar-gradient .brand-text {
    background: linear-gradient(90deg, var(--primary-color), var(--primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: 1.1rem;
}
.navbar-gradient .navbar-brand svg rect { filter: drop-shadow(0 4px 10px rgba(0,0,0,0.15)); }

.navbar-brand {
    color: var(--primary-color) !important;
    font-size: 1.4rem;
    font-weight: 700;
}

.navbar-brand i {
    margin-right: 8px;
}

.nav-link {
    color: #555 !important;
    margin: 0 8px;
    transition: var(--transition);
    font-weight: 500;
}

.nav-link:hover {
    color: var(--primary-color) !important;
}

.nav-link i {
    margin-right: 5px;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    border: none;
    font-weight: 600;
    transition: var(--transition);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background-color: #6c757d;
    border: none;
    transition: var(--transition);
}

.btn-secondary:hover {
    background-color: #5a6268;
    transform: translateY(-2px);
}

.btn-sm {
    font-size: 0.85rem;
    padding: 0.4rem 0.8rem;
}

/* ============================================
   CARDS
   ============================================ */

.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    background-color: #fff;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.15);
}

.card-header {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    border: none;
    font-weight: 600;
    color: var(--header-color);
    padding: 1rem 1.5rem;
}

.card-title {
    color: var(--header-color);
    font-weight: 700;
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    background-color: transparent;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    padding: 1rem 1.5rem;
}

/* ============================================
   COURSE CARDS (Public Area)
   ============================================ */

.course-card {
    cursor: pointer;
    overflow: hidden;
}

.course-image {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    transition: var(--transition);
    overflow: hidden;
}

.course-card:hover .course-image {
    transform: scale(1.08);
}

/* ============================================
   TEACHER CARDS (Public Area)
   ============================================ */

.teacher-card {
    overflow: hidden;
}

.teacher-avatar {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    transition: var(--transition);
    overflow: hidden;
}

.teacher-card:hover .teacher-avatar {
    transform: scale(1.08);
}

/* ============================================
   MATERIAL CARDS (Public Area)
   ============================================ */

.material-card {
    overflow: hidden;
}

.material-icon {
    background: linear-gradient(135deg, var(--secondary-color) 0%, #0dcaf0 100%);
    transition: var(--transition);
    overflow: hidden;
}

.material-card:hover .material-icon {
    transform: scale(1.08);
}

/* ============================================
   FORMS
   ============================================ */

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

.form-control,
.form-select {
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    transition: var(--transition);
    font-size: 0.95rem;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

.form-check-input {
    border-color: #ddd;
    width: 1.25rem;
    height: 1.25rem;
}

.form-check-input:checked {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    border-color: var(--primary-color);
}

.form-check-input:focus {
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

/* ============================================
   BADGES
   ============================================ */

.badge {
    padding: 0.4rem 0.8rem;
    font-weight: 600;
    border-radius: 20px;
}

.bg-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%) !important;
}

/* ============================================
   ALERTS
   ============================================ */

.alert {
    border: none;
    border-radius: var(--border-radius);
    font-weight: 500;
}

.alert-danger {
    background-color: #f8d7da;
    color: #721c24;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
}

.alert-info {
    background-color: #d1ecf1;
    color: #0c5460;
}

.alert-warning {
    background-color: #fff3cd;
    color: #856404;
}

/* ============================================
   FOOTER (Public Area)
   ============================================ */

footer {
    background-color: var(--dark-color);
    color: #fff;
    margin-top: auto;
}

footer a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: var(--transition);
}

footer a:hover {
    color: var(--primary-color);
}

footer h5,
footer h6 {
    color: #fff;
    font-weight: 700;
}

/* ============================================
   SIDEBAR (Admin Area)
   ============================================ */

.admin-sidebar {
    background: linear-gradient(180deg, var(--dark-color) 0%, #1a1a2e 100%);
}

.sidebar-header {
    color: white;
    border-bottom: 2px solid rgba(102, 126, 234, 0.2);
}

.sidebar-header h4 {
    color: var(--primary-color);
    font-weight: 700;
    margin-bottom: 0;
}

.sidebar-header small {
    color: rgba(255, 255, 255, 0.7);
}

.sidebar-menu a {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition);
    font-weight: 500;
}

.sidebar-menu a:hover {
    color: var(--primary-color);
    background-color: rgba(102, 126, 234, 0.1);
}

.sidebar-menu a.active {
    background: linear-gradient(90deg, rgba(102, 126, 234, 0.2) 0%, transparent 100%);
    color: var(--primary-color) !important;
    border-left: 4px solid var(--primary-color);
    font-weight: 700;
}

.menu-title {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 1rem 1.5rem 0.5rem;
    margin-top: 1rem;
}

/* ============================================
   TABLES
   ============================================ */

.table {
    background-color: #fff;
    border-collapse: collapse;
}

.table thead th {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    color: var(--header-color);
    font-weight: 700;
    border: none;
    padding: 1rem;
}

.table tbody td {
    border-color: #eee;
    padding: 1rem;
    vertical-align: middle;
}

.table tbody tr {
    transition: var(--transition);
}

.table tbody tr:hover {
    background-color: rgba(102, 126, 234, 0.05);
}

/* ============================================
   PAGINATION
   ============================================ */

.pagination {
    gap: 0.25rem;
}

.page-link {
    color: var(--primary-color);
    border-color: #ddd;
    transition: var(--transition);
}

.page-link:hover {
    color: #fff;
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.page-item.active .page-link {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    border-color: var(--primary-color);
}

/* ============================================
   BREADCRUMB
   ============================================ */

.breadcrumb {
    background-color: transparent;
    margin-bottom: 1.5rem;
}

.breadcrumb-item {
    color: #666;
}

.breadcrumb-item.active {
    color: var(--header-color);
    font-weight: 600;
}

/* ============================================
   CAROUSEL
   ============================================ */

.carousel-fade .carousel-item {
    transition: opacity 0.6s ease-in-out;
}

.carousel-control-prev-icon,
.carousel-control-next-icon {
    background-color: rgba(0, 0, 0, 0.3);
    border-radius: 50%;
}

/* ============================================
   HEADINGS
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    color: var(--header-color);
    font-weight: 700;
}

.display-4,
.display-5 {
    font-weight: 800;
    color: red;
}

/* ============================================
   UTILITIES
   ============================================ */

.text-primary {
    color: var(--primary-color) !important;
}

.bg-light {
    background-color: #f8f9fa !important;
}

.shadow-sm {
    box-shadow: var(--box-shadow) !important;
}

.rounded {
    border-radius: var(--border-radius) !important;
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 768px) {
    .navbar-brand {
        font-size: 1.2rem;
    }

    .display-4 {
        font-size: 2rem;
    }

    .card-body {
        padding: 1rem;
    }

    .btn-lg {
        padding: 0.75rem 1.5rem;
        font-size: 0.95rem;
    }
}

/* ============================================
   ANIMATIONS
   ============================================ */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
.lead{
    color:white;
}
.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.slide-in-left {
    animation: slideInLeft 0.6s ease-out;
}

/* ============================================
   LOADING STATES
   ============================================ */

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.spinner-border {
    color: var(--primary-color);
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
    .navbar,
    footer,
    .sidebar {
        display: none !important;
    }

    body {
        background-color: #fff;
    }

    .card {
        page-break-inside: avoid;
    }
}