/* CBT System - Common Styles */

:root {
    --primary-color: #1e40af;
    --secondary-color: #3b82f6;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    
    --primary-gradient: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
    
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;
    
    --transition: all 0.3s ease;
}

/* Base Styles */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
}

/* Utilities */
.gradient-bg {
    background: var(--primary-gradient);
}

.shadow-custom {
    box-shadow: var(--shadow-md);
}

.border-radius-custom {
    border-radius: var(--border-radius-lg);
}

/* Buttons */
.btn {
    border-radius: var(--border-radius);
    font-weight: 600;
    padding: 0.5rem 1.5rem;
    transition: var(--transition);
    border: none;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
    color: white;
}

.btn-outline-primary {
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline-primary:hover {
    background: var(--primary-color);
    color: white;
}

/* Cards */
.card {
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.card-header {
    background: var(--light-color);
    border-bottom: 1px solid #dee2e6;
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0 !important;
    padding: 1.25rem 1.5rem;
    font-weight: 600;
}

.card-body {
    padding: 1.5rem;
}

/* Forms */
.form-control {
    border: 2px solid #e9ecef;
    border-radius: var(--border-radius);
    padding: 0.75rem 1rem;
    transition: var(--transition);
    font-size: 0.95rem;
}

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

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

.form-select {
    border: 2px solid #e9ecef;
    border-radius: var(--border-radius);
    padding: 0.75rem 1rem;
}

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

/* Tables */
.table {
    border-collapse: separate;
    border-spacing: 0;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.table thead th {
    background: var(--primary-gradient);
    color: white;
    border: none;
    font-weight: 600;
    padding: 1rem;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
}

.table tbody td {
    padding: 1rem;
    border-bottom: 1px solid #f1f3f4;
    vertical-align: middle;
}

.table tbody tr:hover {
    background-color: #f8f9fa;
}

/* Alerts */
.alert {
    border: none;
    border-radius: var(--border-radius-lg);
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
    border-left: 4px solid;
}

.alert-success {
    background-color: #d4edda;
    border-left-color: var(--success-color);
    color: #155724;
}

.alert-danger {
    background-color: #f8d7da;
    border-left-color: var(--danger-color);
    color: #721c24;
}

.alert-warning {
    background-color: #fff3cd;
    border-left-color: var(--warning-color);
    color: #856404;
}

.alert-info {
    background-color: #d1ecf1;
    border-left-color: var(--info-color);
    color: #0c5460;
}

/* Badges */
.badge {
    font-size: 0.75rem;
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-weight: 600;
}

/* Modals */
.modal-content {
    border: none;
    border-radius: var(--border-radius-xl);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.modal-header {
    border-bottom: 1px solid #dee2e6;
    border-radius: var(--border-radius-xl) var(--border-radius-xl) 0 0;
    padding: 1.5rem;
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    border-top: 1px solid #dee2e6;
    border-radius: 0 0 var(--border-radius-xl) var(--border-radius-xl);
    padding: 1rem 1.5rem;
}

/* Navigation */
.breadcrumb {
    background: none;
    padding: 0;
    margin-bottom: 1.5rem;
}

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

.breadcrumb-item a:hover {
    color: var(--secondary-color);
}

.breadcrumb-item.active {
    color: #6c757d;
}

/* Avatar */
.avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid white;
    box-shadow: var(--shadow-sm);
}

.avatar-lg {
    width: 64px;
    height: 64px;
}

.avatar-xl {
    width: 96px;
    height: 96px;
}

/* Loading States */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.spinner-border-custom {
    width: 3rem;
    height: 3rem;
    border-width: 0.3rem;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.slide-in-right {
    animation: slideInRight 0.3s ease-out;
}

/* Responsive Design */
@media (max-width: 768px) {
    .card-body {
        padding: 1rem;
    }
    
    .table-responsive {
        border-radius: var(--border-radius-lg);
    }
    
    .btn {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}

/* Print Styles */
@media print {
    .no-print {
        display: none !important;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
    
    .btn {
        display: none;
    }
}

/* Dark Mode Support (Optional) */
@media (prefers-color-scheme: dark) {
    .auto-dark {
        --light-color: #2d3748;
        --dark-color: #f7fafc;
    }
}

/* Focus Indicators for Accessibility */
.btn:focus,
.form-control:focus,
.form-select:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .btn-primary {
        background: #000;
        border: 2px solid #000;
    }
    
    .form-control {
        border: 2px solid #000;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}