:root {
    --primary-color: #3498db;
    --secondary-color: #2c3e50;
    --accent-color: #e74c3c;
    --light-color: #ecf0f1;
    --dark-color: #2c3e50;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --danger-color: #e74c3c;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f8f9fa;
    color: #333;
    line-height: 1.6;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 100px 0;
}

/* Cards */
.category-card {
    transition: transform 0.3s, box-shadow 0.3s;
    border: none;
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 20px;
    height: 100%;
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.category-card.locked {
    opacity: 0.7;
    background-color: #f8f9fa;
}

.category-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

/* Section Titles */
.section-title {
    position: relative;
    margin-bottom: 30px;
    padding-bottom: 10px;
    font-weight: 600;
}

.section-title:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: var(--primary-color);
}

.section-title.text-center:after {
    left: 50%;
    transform: translateX(-50%);
}

/* Progress Bars */
.progress {
    height: 10px;
    border-radius: 5px;
}

.progress-bar {
    background-color: var(--primary-color);
    border-radius: 5px;
}

/* Buttons */
.btn {
    border-radius: 6px;
    font-weight: 500;
    transition: all 0.3s;
}

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

.btn-primary:hover {
    background-color: #2980b9;
    border-color: #2980b9;
    transform: translateY(-2px);
}

/* Forms */
.form-control {
    border-radius: 6px;
    border: 1px solid #ddd;
    padding: 10px 15px;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(52, 152, 219, 0.25);
}

/* Alerts */
.alert {
    border-radius: 8px;
    border: none;
}

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

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

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

/* Navigation */
.navbar-brand {
    font-weight: bold;
}

.nav-link {
    font-weight: 500;
    transition: color 0.3s;
}

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

/* Feature Icons */
.feature-icon {
    color: var(--primary-color);
}

/* Dashboard Cards */
.card {
    border: none;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s;
}

.card:hover {
    transform: translateY(-2px);
}

.card-header {
    background-color: white;
    border-bottom: 1px solid #eee;
    font-weight: 600;
}

/* Breadcrumb */
.breadcrumb {
    background-color: transparent;
    padding: 0;
    margin-bottom: 10px;
}

.breadcrumb-item a {
    color: var(--primary-color);
    text-decoration: none;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-section {
        padding: 60px 0;
        text-align: center;
    }
    
    .hero-section h1 {
        font-size: 2rem;
    }
    
    .category-card {
        margin-bottom: 15px;
    }
}

/* Admin Sidebar */
.nav-pills .nav-link {
    color: var(--dark-color);
    border-radius: 6px;
    margin-bottom: 5px;
}

.nav-pills .nav-link.active {
    background-color: var(--primary-color);
    color: white;
}

.nav-pills .nav-link:hover:not(.active) {
    background-color: #e9ecef;
}

/* Quiz Questions */
.form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.form-check-label {
    cursor: pointer;
}

/* Footer */
.footer {
    margin-top: auto;
}

.footer a {
    text-decoration: none;
    transition: color 0.3s;
}

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


/* Additional CSS for new features */

/* Dashed border for not started categories */
.border-dashed {
    border: 2px dashed #dee2e6 !important;
}

/* Study material cards */
.study-material-card {
    transition: all 0.3s ease;
}

.study-material-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

/* Material tabs */
.material-tabs .nav-link {
    color: var(--dark-color);
    border: none;
    border-bottom: 3px solid transparent;
    padding: 12px 20px;
    font-weight: 500;
}

.material-tabs .nav-link.active {
    color: var(--primary-color);
    border-bottom: 3px solid var(--primary-color);
    background-color: transparent;
}

.material-tabs .nav-link:hover:not(.active) {
    border-bottom: 3px solid #dee2e6;
}

/* Progress indicators */
.progress {
    background-color: #e9ecef;
}

.progress-bar {
    transition: width 0.6s ease;
}

/* Badge styles */
.badge {
    font-weight: 500;
}

/* Button styles for start learning */
.btn-success {
    background-color: var(--success-color);
    border-color: var(--success-color);
}

.btn-success:hover {
    background-color: #219653;
    border-color: #219653;
}

/* Lock icon styling */
.fa-lock {
    opacity: 0.7;
}

/* Statistics cards */
.card.bg-primary,
.card.bg-success,
.card.bg-info {
    border: none;
}

.card.bg-primary h3,
.card.bg-success h3,
.card.bg-info h3 {
    font-weight: bold;
    margin-bottom: 0.5rem;
}

/* Responsive table */
.table-responsive {
    border-radius: 8px;
}

/* Form enhancements */
.form-select:focus,
.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(52, 152, 219, 0.25);
}

/* Modal styles */
.modal-header {
    background-color: var(--primary-color);
    color: white;
}

.modal-header .btn-close {
    filter: invert(1);
}

/* Upload area styling */
.upload-area {
    border: 2px dashed #dee2e6;
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.upload-area:hover {
    border-color: var(--primary-color);
    background-color: #f8f9fa;
}

.upload-area.dragover {
    border-color: var(--primary-color);
    background-color: #e3f2fd;
}

/* Animation for new user welcome */
@keyframes welcomePulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.welcome-card {
    animation: welcomePulse 2s ease-in-out;
}

/* Level completion animation */
.level-complete {
    background: linear-gradient(45deg, #27ae60, #2ecc71);
    color: white;
}

/* Mobile optimizations */
@media (max-width: 768px) {
    .material-tabs .nav-link {
        padding: 8px 12px;
        font-size: 0.9rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .btn-group .btn {
        font-size: 0.8rem;
        padding: 0.25rem 0.5rem;
    }
}

/* Print styles */
@media print {
    .navbar, .footer, .btn {
        display: none !important;
    }
    
    .card {
        border: 1px solid #000 !important;
        box-shadow: none !important;
    }
}


/* Mentor Page Styles */
.mentor-card {
    transition: all 0.3s ease;
    border: none;
    border-radius: 15px;
    overflow: hidden;
}

.mentor-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.mentor-image .rounded-circle {
    border: 4px solid #e9ecef;
    transition: border-color 0.3s ease;
}

.mentor-card:hover .mentor-image .rounded-circle {
    border-color: var(--primary-color);
}

.mentor-contact {
    border-top: 1px solid #e9ecef;
    border-bottom: 1px solid #e9ecef;
    padding: 1rem 0;
    margin: 1rem 0;
}

.expertise-tags .badge {
    font-size: 0.75rem;
    padding: 0.35em 0.65em;
}

/* Contact Page Styles */
.contact-info .fa-lg {
    width: 20px;
    text-align: center;
}

.map-placeholder {
    border-radius: 0 0 8px 8px;
}

/* Form Enhancements */
.form-label {
    font-weight: 500;
    color: var(--dark-color);
}

.form-control, .form-select {
    border-radius: 8px;
    border: 1px solid #ddd;
    transition: all 0.3s ease;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(52, 152, 219, 0.25);
}

/* Accordion Styles */
.accordion-button {
    font-weight: 500;
    color: var(--dark-color);
}

.accordion-button:not(.collapsed) {
    background-color: rgba(52, 152, 219, 0.1);
    color: var(--primary-color);
}

.accordion-button:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(52, 152, 219, 0.25);
}

/* List Group Styles */
.list-group-item {
    border: none;
    padding: 0.75rem 1rem;
    transition: all 0.3s ease;
}

.list-group-item:hover {
    background-color: rgba(52, 152, 219, 0.1);
    color: var(--primary-color);
}

/* Alert Styles */
.alert {
    border: none;
    border-radius: 8px;
}

.alert-info {
    background-color: rgba(52, 152, 219, 0.1);
    color: var(--primary-color);
}

/* Button Enhancements */
.btn-lg {
    padding: 0.75rem 1.5rem;
    font-weight: 500;
}

/* Card Header Styles */
.card-header {
    font-weight: 600;
    border-bottom: none;
}

.bg-primary .card-header,
.bg-secondary .card-header,
.bg-info .card-header,
.bg-warning .card-header {
    border-bottom: none;
}

/* Responsive Design */
@media (max-width: 768px) {
    .mentor-card .card-body {
        padding: 1.5rem;
    }
    
    .contact-info .d-flex {
        flex-direction: column;
        text-align: center;
    }
    
    .contact-info .ms-3 {
        margin-left: 0 !important;
        margin-top: 0.5rem;
    }
    
    .faq-accordion .accordion-button {
        font-size: 0.9rem;
        padding: 0.75rem 1rem;
    }
}

/* Animation for modal */
.modal.fade .modal-dialog {
    transform: translate(0, -50px);
    transition: transform 0.3s ease-out;
}

.modal.show .modal-dialog {
    transform: translate(0, 0);
}

/* Badge styles */
.badge {
    font-weight: 500;
    letter-spacing: 0.5px;
}

/* Text utilities */
.text-primary {
    color: var(--primary-color) !important;
}

.lead {
    font-weight: 300;
    line-height: 1.6;
}

/* Shadow utilities */
.shadow-sm {
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075) !important;
}

/* Border radius utilities */
.rounded-top {
    border-top-left-radius: 8px !important;
    border-top-right-radius: 8px !important;
}

.rounded-bottom {
    border-bottom-left-radius: 8px !important;
    border-bottom-right-radius: 8px !important;
}

/* About Page Specific Styles */

/* Statistics Section */
.stat-item {
    padding: 1rem;
}

.stat-item h2 {
    font-size: 2.5rem;
}

/* Developer Section */
.avatar-placeholder {
    border: 4px solid #e9ecef;
}

.contact-links .btn {
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.skills-tags .badge {
    font-size: 0.8rem;
    padding: 0.5em 0.75em;
}

/* Timeline */
.timeline {
    position: relative;
    padding-left: 2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--primary-color);
}

.timeline-item {
    position: relative;
    margin-bottom: 2rem;
}

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

.timeline-item::before {
    content: '';
    position: absolute;
    left: -2rem;
    top: 5px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--primary-color);
    border: 2px solid white;
}

.timeline-date {
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.timeline-content {
    background: #f8f9fa;
    padding: 1rem;
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
}

/* Technology Stack */
.tech-item {
    padding: 1rem;
    transition: transform 0.3s ease;
}

.tech-item:hover {
    transform: translateY(-5px);
}

.tech-item i {
    transition: transform 0.3s ease;
}

.tech-item:hover i {
    transform: scale(1.1);
}

/* Color Variables for Tech Icons */
.text-orange { color: #e34f26 !important; }
.text-blue { color: #1572b6 !important; }
.text-yellow { color: #f7df1e !important; }
.text-purple { color: #7952b3 !important; }
.text-indigo { color: #777bb4 !important; }
.text-teal { color: #4479a1 !important; }

/* Features List */
.features-list .d-flex {
    padding: 0.75rem;
    border-radius: 8px;
    transition: background-color 0.3s ease;
}

.features-list .d-flex:hover {
    background-color: #f8f9fa;
}

/* Future Enhancements */
.border-warning {
    border: 2px solid #ffc107 !important;
}

/* Responsive Design */
@media (max-width: 768px) {
    .stat-item h2 {
        font-size: 2rem;
    }
    
    .timeline {
        padding-left: 1.5rem;
    }
    
    .timeline::before {
        left: 10px;
    }
    
    .timeline-item::before {
        left: -1.5rem;
    }
    
    .tech-item {
        padding: 0.5rem;
    }
    
    .tech-item i {
        font-size: 2rem !important;
    }
}

/* Card Enhancements */
.card {
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.card:hover {
    box-shadow: 0 5px 20px rgba(0,0,0,0.15);
}

/* Text Utilities */
.text-purple {
    color: #6f42c1 !important;
}

/* Alert Customization */
.alert {
    border-left: 4px solid;
}

.alert-info {
    border-left-color: #0dcaf0;
}

/* List Styling */
.list-unstyled li {
    padding: 0.25rem 0;
}

/* Icon Sizes */
.fa-3x {
    font-size: 3em;
}

/* Background Colors */
.bg-light {
    background-color: #f8f9fa !important;
}




/* Quiz Specific Styles */

/* Question Cards */
.question-card {
    background: #fff;
    border: 1px solid #e9ecef;
    border-radius: 10px;
    transition: all 0.3s ease;
}

.question-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

/* Option Labels */
.option-label {
    display: flex;
    align-items: center;
    padding: 12px 15px;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: 10px;
}

.option-label:hover {
    border-color: var(--primary-color);
    background-color: #f8f9fa;
}

.form-check-input:checked + .option-label {
    border-color: var(--primary-color);
    background-color: rgba(52, 152, 219, 0.1);
}

.option-letter {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    margin-right: 15px;
    font-weight: bold;
    font-size: 0.9rem;
}

/* Progress Circle */
.score-circle {
    position: relative;
    width: 120px;
    height: 120px;
}

.circle-progress {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: conic-gradient(var(--primary-color) 0% var(--percentage), #e9ecef var(--percentage) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.circle-progress::before {
    content: '';
    position: absolute;
    width: 80px;
    height: 80px;
    background: white;
    border-radius: 50%;
}

.progress-value {
    position: relative;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

/* Answer Review */
.answer-item {
    border-left: 4px solid;
}

.answer-item.border-success {
    border-left-color: var(--success-color);
}

.answer-item.border-danger {
    border-left-color: var(--danger-color);
}

/* Quiz Info */
.quiz-info .badge {
    font-size: 0.8rem;
    padding: 0.5em 0.75em;
}

/* Form Check Enhancements */
.form-check-input {
    width: 1.2em;
    height: 1.2em;
    margin-top: 0.15em;
}

.form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

/* Responsive Design for Quiz */
@media (max-width: 768px) {
    .question-card {
        padding: 1rem !important;
    }
    
    .option-label {
        padding: 10px 12px;
        font-size: 0.9rem;
    }
    
    .option-letter {
        width: 25px;
        height: 25px;
        font-size: 0.8rem;
        margin-right: 10px;
    }
    
    .score-circle {
        width: 100px;
        height: 100px;
    }
    
    .circle-progress::before {
        width: 70px;
        height: 70px;
    }
    
    .progress-value {
        font-size: 1.2rem;
    }
}

/* Animation for correct/incorrect answers */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.answer-item {
    animation: fadeIn 0.5s ease;
}

/* Progress bar for quiz completion */
.quiz-progress {
    height: 6px;
    background: #e9ecef;
    border-radius: 3px;
    margin-bottom: 1rem;
    overflow: hidden;
}

.quiz-progress-bar {
    height: 100%;
    background: var(--primary-color);
    border-radius: 3px;
    transition: width 0.3s ease;
}

/* Timer styling (if you add a timer feature) */
.quiz-timer {
    font-size: 1.1rem;
    font-weight: bold;
    color: var(--primary-color);
    background: #f8f9fa;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    border: 2px solid var(--primary-color);
}

.quiz-timer.warning {
    color: var(--warning-color);
    border-color: var(--warning-color);
}

.quiz-timer.danger {
    color: var(--danger-color);
    border-color: var(--danger-color);
    animation: pulse 1s infinite;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

/* Admin Panel Specific Styles */

/* Sidebar */
.admin-sidebar {
    min-height: calc(100vh - 76px);
    box-shadow: 2px 0 5px rgba(0,0,0,0.1);
}

.nav-pills .nav-link {
    color: var(--dark-color);
    border-radius: 6px;
    margin-bottom: 5px;
    transition: all 0.3s ease;
}

.nav-pills .nav-link.active {
    background-color: var(--primary-color);
    color: white;
}

.nav-pills .nav-link:hover:not(.active) {
    background-color: #e9ecef;
}

/* Table Enhancements */
.table th {
    font-weight: 600;
    background-color: #f8f9fa;
}

.table-striped tbody tr:nth-of-type(odd) {
    background-color: rgba(0,0,0,.02);
}

.table-hover tbody tr:hover {
    background-color: rgba(0,0,0,.075);
}

/* Badge Styles */
.badge {
    font-weight: 500;
    font-size: 0.75em;
}

/* Form Controls */
.form-select-sm {
    padding: 0.25rem 2.25rem 0.25rem 0.5rem;
    font-size: 0.875rem;
}

/* Modal Enhancements */
.modal-header {
    background-color: var(--primary-color);
    color: white;
}

.modal-header .btn-close {
    filter: invert(1);
}

/* Card Headers */
.card-header {
    background-color: #f8f9fa;
    border-bottom: 1px solid #dee2e6;
    font-weight: 600;
}

/* Button Groups */
.btn-group-sm > .btn {
    padding: 0.25rem 0.5rem;
    font-size: 0.875rem;
}

/* Question Preview */
.question-preview {
    max-width: 300px;
}

/* Statistics Cards */
.card.bg-primary,
.card.bg-success,
.card.bg-info,
.card.bg-warning {
    border: none;
}

.card.bg-primary h4,
.card.bg-success h4,
.card.bg-info h4,
.card.bg-warning h4 {
    margin-bottom: 0.5rem;
    font-weight: bold;
}

/* Responsive Tables */
@media (max-width: 768px) {
    .table-responsive {
        font-size: 0.875rem;
    }
    
    .btn-group-sm > .btn {
        padding: 0.125rem 0.25rem;
        font-size: 0.75rem;
    }
    
    .admin-sidebar {
        min-height: auto;
        margin-bottom: 1rem;
    }
}

/* File Upload Styles */
.file-upload-area {
    border: 2px dashed #dee2e6;
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.file-upload-area:hover {
    border-color: var(--primary-color);
    background-color: #f8f9fa;
}

.file-upload-area.dragover {
    border-color: var(--primary-color);
    background-color: #e3f2fd;
}

/* Action Buttons */
.action-buttons .btn {
    margin-right: 0.25rem;
}

/* Status Indicators */
.status-active {
    color: var(--success-color);
}

.status-inactive {
    color: var(--secondary-color);
}

.status-pending {
    color: var(--warning-color);
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* Confirmation Dialog */
.confirmation-dialog {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1050;
}

.confirmation-content {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    max-width: 400px;
    width: 90%;
}


/* Mentor Management Styles */

/* Mentor Cards */
.mentor-card {
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
}

.mentor-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

/* Image Upload Preview */
.image-preview {
    border: 2px dashed #dee2e6;
    border-radius: 8px;
    padding: 1rem;
    text-align: center;
    background: #f8f9fa;
}

.image-preview img {
    max-width: 200px;
    max-height: 200px;
    border-radius: 8px;
}

/* File Upload Area */
.file-upload-area {
    border: 2px dashed #dee2e6;
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    background: #f8f9fa;
}

.file-upload-area:hover {
    border-color: var(--primary-color);
    background: #e3f2fd;
}

.file-upload-area.dragover {
    border-color: var(--primary-color);
    background: #bbdefb;
}

/* Mentor Contact Info */
.mentor-contact {
    font-size: 0.875rem;
}

.mentor-contact i {
    width: 16px;
    text-align: center;
}

/* Action Buttons */
.action-buttons .btn {
    margin-right: 0.5rem;
}

/* Responsive Mentor Grid */
@media (max-width: 768px) {
    .mentor-card .card-body {
        padding: 1rem;
    }
    
    .mentor-card img {
        width: 80px;
        height: 80px;
    }
}

/* Modal Form Enhancements */
.modal-body .form-label {
    font-weight: 500;
    color: var(--dark-color);
}

/* Image Preview in Forms */
#current_image_preview,
#add_image_preview {
    margin-top: 0.5rem;
}

#current_image_preview img,
#add_image_preview img {
    border: 2px solid #e9ecef;
    border-radius: 8px;
}

/* Bio Textarea */
#bio,
#edit_bio {
    resize: vertical;
    min-height: 100px;
}

/* Mentor Statistics */
.mentor-stats {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 10px;
    padding: 2rem;
    margin-bottom: 2rem;
}

.mentor-stats h3 {
    margin-bottom: 1rem;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

/* Drag and Drop Styles */
.drop-zone {
    border: 2px dashed #ccc;
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    background: #f8f9fa;
}

.drop-zone.active {
    border-color: var(--primary-color);
    background: #e3f2fd;
}

/* Form Validation */
.was-validated .form-control:valid {
    border-color: var(--success-color);
}

.was-validated .form-control:invalid {
    border-color: var(--danger-color);
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.loading::after {
    content: 'Loading...';
    display: block;
    text-align: center;
    color: var(--primary-color);
}