/* Custom CSS for MrBenrud.com Classroom Application */

/* Root Variables */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #64748b;
    --success-color: #059669;
    --warning-color: #d97706;
    --danger-color: #dc2626;
    --info-color: #0891b2;
    --light-color: #f8fafc;
    --lighter-color: #ffffff;
    --dark-color: #1e293b;
    --text-color: #334155;
    --text-muted: #64748b;
    --purple-color: #7c3aed;
    
    --border-radius: 0.5rem;
    --border-radius-sm: 0.375rem;
    --box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --box-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --box-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --transition: all 0.2s ease-in-out;
    
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
}

/* Global Styles */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.5;
    color: var(--text-color);
    background-color: var(--light-color);
    font-size: 0.875rem;
}

.container-fluid {
    padding-left: var(--spacing-lg);
    padding-right: var(--spacing-lg);
}

@media (max-width: 768px) {
    .container-fluid {
        padding-left: var(--spacing-md);
        padding-right: var(--spacing-md);
    }
}

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

::-webkit-scrollbar-track {
    background: var(--light-color);
}

::-webkit-scrollbar-thumb {
    background: var(--secondary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

/* Header Styles */
.navbar-brand {
    font-weight: 700;
    font-size: 1.75rem !important;
    letter-spacing: -0.025em;
}

.navbar-nav .nav-link {
    font-weight: 500;
    padding: 0.75rem 1rem !important;
    transition: var(--transition);
    border-radius: var(--border-radius);
    margin: 0 0.25rem;
}

.navbar-nav .nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-1px);
}

.navbar-nav .dropdown-menu {
    border: none;
    box-shadow: var(--box-shadow-lg);
    border-radius: var(--border-radius);
    margin-top: 0.5rem;
}

.navbar-nav .dropdown-item {
    padding: 0.75rem 1.25rem;
    transition: var(--transition);
}

.navbar-nav .dropdown-item:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateX(5px);
}

/* Main Content Styles */
.main-content {
    min-height: 70vh;
    padding: var(--spacing-lg) 0;
}

.highlight-section {
    background: var(--lighter-color);
    border: 1px solid #e2e8f0;
    border-left: 4px solid var(--primary-color);
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-xl) var(--spacing-lg);
    border-radius: var(--border-radius);
}

.highlight-section h2 {
    color: var(--dark-color);
    font-weight: 600;
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
}

.highlight-section p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin: 0;
}

/* Card Enhancements */
.card {
    border: 1px solid #e2e8f0;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    border-radius: var(--border-radius);
    background: var(--lighter-color);
    margin-bottom: var(--spacing-lg);
}

.card:hover {
    box-shadow: var(--box-shadow-md);
    transform: translateY(-1px);
}

.card-header {
    background: var(--primary-color);
    color: white;
    border-bottom: none;
    font-weight: 600;
    font-size: 0.875rem;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius) var(--border-radius) 0 0 !important;
}

.card-body {
    padding: var(--spacing-lg);
    color: var(--text-color);
}

.card-body h5, .card-body h6 {
    color: var(--dark-color);
    font-weight: 600;
}

.card-body p {
    color: var(--text-color);
    line-height: 1.5;
    margin-bottom: var(--spacing-md);
}

.card-body .text-muted {
    color: var(--text-muted) !important;
}

.feature-card, .class-card {
    transition: var(--transition);
    height: 100%;
}

.feature-card:hover, .class-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow-lg);
}

.feature-icon {
    transition: var(--transition);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
}

/* Stat Cards */
.stat-card {
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--box-shadow-lg);
}

/* Sidebar Styles */
.sidebar {
    padding-left: var(--spacing-lg);
    padding-top: var(--spacing-lg);
}

@media (max-width: 991px) {
    .sidebar {
        padding-left: 0;
        margin-top: var(--spacing-xl);
    }
}

.sidebar .card {
    margin-bottom: var(--spacing-lg);
    border: 1px solid #e2e8f0;
}

.sidebar .card-header {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.sidebar .card-body {
    padding: var(--spacing-lg);
}

/* Specific sidebar card colors */
.sidebar .card:nth-child(1) .card-header {
    background: var(--primary-color);
}

.sidebar .card:nth-child(2) .card-header {
    background: var(--success-color);
}

.sidebar .card:nth-child(3) .card-header {
    background: var(--info-color);
}

.sidebar .card:nth-child(4) .card-header {
    background: var(--warning-color);
    color: var(--dark-color);
}

/* AI Tools Styles */
.response-content {
    max-height: 300px;
    overflow-y: auto;
    white-space: pre-wrap;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
}

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

/* Google Drive Styles */
.recent-docs {
    max-height: 200px;
    overflow-y: auto;
}

.attached-file, .selected-files-list .file-item {
    transition: var(--transition);
}

.attached-file:hover, .selected-files-list .file-item:hover {
    background-color: #e9ecef !important;
    transform: translateX(3px);
}

/* Upload Area Styles */
.upload-area {
    transition: var(--transition);
    cursor: pointer;
    min-height: 150px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.upload-area:hover {
    background-color: #e9ecef !important;
    border-color: var(--primary-color) !important;
}

.upload-area.drag-over {
    background-color: rgba(13, 110, 253, 0.1) !important;
    border-color: var(--primary-color) !important;
    border-style: dashed !important;
}

/* Form Enhancements */
.form-control, .form-select {
    border-radius: var(--border-radius);
    border: 1px solid #d1d5db;
    transition: var(--transition);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.875rem;
    color: var(--text-color);
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    outline: none;
}

.form-label {
    color: var(--dark-color);
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    font-size: 0.875rem;
}

/* Button Enhancements */
.btn {
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: var(--transition);
    border: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.875rem;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--box-shadow-md);
}

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

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

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

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

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

/* Feature Cards and Class Cards */
.feature-card, .class-card {
    transition: var(--transition);
    height: 100%;
    border: 1px solid #e2e8f0;
    margin-bottom: var(--spacing-lg);
}

.feature-card:hover, .class-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--box-shadow-md);
    border-color: #cbd5e1;
}

.feature-icon {
    transition: var(--transition);
    margin-bottom: var(--spacing-lg);
}

.feature-card:hover .feature-icon {
    transform: scale(1.05);
}

.feature-card .card-body, .class-card .card-body {
    padding: var(--spacing-xl);
    text-align: center;
}

.feature-card .card-title, .class-card .card-title {
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--dark-color);
    font-size: 1.1rem;
}

.feature-card .card-text, .class-card .card-text {
    color: var(--text-muted);
    line-height: 1.5;
    margin-bottom: var(--spacing-lg);
}

/* List group improvements */
.list-group-item {
    border: 1px solid #e2e8f0;
    color: var(--text-color);
    padding: var(--spacing-md) var(--spacing-lg);
}

.list-group-item:hover {
    background-color: var(--light-color);
}

.list-group-item h6 {
    color: var(--dark-color);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.list-group-item .text-muted {
    color: var(--text-muted) !important;
    font-size: 0.8rem;
}

/* Navigation tabs */
.nav-tabs {
    border-bottom: 2px solid #e2e8f0;
    margin-bottom: var(--spacing-lg);
}

.nav-tabs .nav-link {
    color: var(--text-muted);
    border: none;
    border-bottom: 2px solid transparent;
    padding: var(--spacing-md) var(--spacing-lg);
    font-weight: 500;
}

.nav-tabs .nav-link:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.nav-tabs .nav-link.active {
    color: var(--primary-color);
    border-color: var(--primary-color);
    background-color: transparent;
}

/* Better text hierarchy */
h1, h2, h3, h4, h5, h6 {
    color: var(--dark-color);
    font-weight: 600;
    line-height: 1.3;
}

h1 { font-size: 2rem; margin-bottom: var(--spacing-lg); }
h2 { font-size: 1.5rem; margin-bottom: var(--spacing-md); }
h3 { font-size: 1.25rem; margin-bottom: var(--spacing-md); }
h4 { font-size: 1.1rem; margin-bottom: var(--spacing-sm); }
h5 { font-size: 1rem; margin-bottom: var(--spacing-sm); }
h6 { font-size: 0.9rem; margin-bottom: var(--spacing-sm); }

p {
    color: var(--text-color);
    line-height: 1.5;
    margin-bottom: var(--spacing-md);
}

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

/* Badge improvements */
.badge {
    font-size: 0.75rem;
    padding: 0.35em 0.65em;
    border-radius: var(--border-radius-sm);
}

/* Content spacing */
.row {
    margin-bottom: var(--spacing-lg);
}

.col, .col-md-8, .col-md-4, .col-lg-3, .col-lg-4, .col-lg-6, .col-lg-8, .col-lg-9 {
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning-color) 0%, #ffca2c 100%);
    color: var(--dark-color);
}

.btn-info {
    background: linear-gradient(135deg, var(--info-color) 0%, #3dd5f3 100%);
    color: var(--dark-color);
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger-color) 0%, #bb2d3b 100%);
}

/* Purple custom color */
.bg-purple {
    background-color: var(--purple-color) !important;
}

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

/* Table Styles */
.table {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
}

.table th {
    background-color: var(--light-color);
    border-bottom: 2px solid #dee2e6;
    font-weight: 600;
    color: var(--dark-color);
}

.table-hover tbody tr:hover {
    background-color: rgba(13, 110, 253, 0.05);
}

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

.timeline::before {
    content: '';
    position: absolute;
    left: 0.5rem;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #dee2e6;
}

.timeline-item {
    position: relative;
}

.timeline-marker {
    position: absolute;
    left: -2.25rem;
    top: 0.25rem;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid white;
    box-shadow: var(--box-shadow);
}

/* Lesson Styles */
.lesson-item {
    transition: var(--transition);
}

.lesson-item:hover {
    background-color: var(--light-color);
    border-radius: var(--border-radius);
}

/* Announcement Styles */
.announcement-item {
    transition: var(--transition);
}

.announcement-item:hover {
    background-color: rgba(13, 110, 253, 0.05);
    border-radius: var(--border-radius);
    padding: 0.75rem;
    margin: -0.25rem;
}

/* Insight Styles */
.insight-item {
    transition: var(--transition);
    border: 1px solid transparent;
}

.insight-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--box-shadow);
}

/* Modal Enhancements */
.modal-content {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow-lg);
}

.modal-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, #0b5ed7 100%);
    color: white;
    border-bottom: none;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
}

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

/* Footer Styles */
footer {
    background: linear-gradient(135deg, var(--dark-color) 0%, #343a40 100%);
}

footer a {
    transition: var(--transition);
}

footer a:hover {
    color: var(--primary-color) !important;
    transform: translateY(-1px);
}

/* Responsive Design */
@media (max-width: 768px) {
    .sidebar {
        padding-left: 0;
        margin-top: 2rem;
    }
    
    .feature-icon {
        width: 60px !important;
        height: 60px !important;
    }
    
    .navbar-brand {
        font-size: 1.5rem !important;
    }
    
    .highlight-section {
        padding: 2rem 1rem !important;
    }
    
    .upload-area {
        min-height: 100px;
    }
}

@media (max-width: 576px) {
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    .card-body {
        padding: 1rem 0.75rem;
    }
    
    .btn {
        font-size: 0.875rem;
        padding: 0.5rem 1rem;
    }
}

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

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

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

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

/* Loading States */
.loading {
    position: relative;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius);
}

/* Print Styles */
@media print {
    .navbar,
    .sidebar,
    footer,
    .btn {
        display: none !important;
    }
    
    .main-content {
        margin: 0 !important;
        padding: 0 !important;
    }
    
    .card {
        box-shadow: none !important;
        border: 1px solid #dee2e6 !important;
        break-inside: avoid;
    }
}

/* Accessibility Enhancements */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Focus styles for keyboard navigation */
.btn:focus,
.form-control:focus,
.form-select:focus,
.nav-link:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .card {
        border: 2px solid var(--dark-color);
    }
    
    .btn {
        border: 2px solid currentColor;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    *,
    ::before,
    ::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}