/* Custom CSS for PLS TRAVELS Fleet Management System */

/* Override Bootstrap theme variables when needed */
:root {
    --pls-primary: #ffc107;
    --pls-secondary: #6c757d;
    --pls-success: #28a745;
    --pls-warning: #fd7e14;
    --pls-danger: #dc3545;
    --pls-info: #17a2b8;
    --pls-light: #ffffff;
    --pls-dark: #343a40;
    --pls-accent: #6f42c1;
    --pls-text-dark: #343a40;
    --pls-text-light: #ffffff;
    --pls-gray-light: #f8f9fa;
    --pls-gray-medium: #6c757d;
    --pls-gray-dark: #495057;
}

/* Comprehensive responsive design for mobile and desktop */
@media (max-width: 576px) {
    .container-fluid {
        padding-left: 8px;
        padding-right: 8px;
    }
    
    .card {
        margin-bottom: 0.75rem;
        box-shadow: 0 2px 6px rgba(0,0,0,0.1);
        border-radius: 12px;
    }
    
    .btn:not(.btn-sm):not(.btn-xs) {
        padding: 0.75rem 1rem;
        font-size: 1rem;
        min-height: 48px;
        width: 100%;
        margin-bottom: 0.5rem;
    }
    
    .btn-lg {
        padding: 1rem 1.25rem;
        font-size: 1.1rem;
        min-height: 56px;
    }
    
    .navbar-brand {
        font-size: 1.1rem;
    }
    
    .card-header {
        padding: 1rem;
        font-size: 1rem;
        font-weight: 600;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    /* Enhanced form controls for mobile */
    .form-control, .form-select {
        padding: 0.75rem;
        font-size: 16px;
        min-height: 48px;
        border-radius: 8px;
    }
    
    .input-group-lg .form-control,
    .input-group-lg .form-select {
        min-height: 56px;
        font-size: 18px;
    }
    
    /* Better navigation spacing */
    .navbar {
        padding: 0.5rem 0;
    }
    
    .nav-link {
        padding: 0.75rem 1rem;
        font-size: 1rem;
    }
    
    /* Modal improvements */
    .modal-dialog {
        margin: 0.5rem;
        max-width: calc(100% - 1rem);
    }
    
    /* Table improvements */
    .table-responsive {
        font-size: 0.875rem;
    }
    
    /* Improve touch targets */
    .dropdown-item {
        padding: 0.75rem 1rem;
        font-size: 0.95rem;
    }
}

@media (min-width: 577px) and (max-width: 768px) {
    .container-fluid {
        padding-left: 15px;
        padding-right: 15px;
    }
    
    .card {
        margin-bottom: 1rem;
        box-shadow: 0 3px 8px rgba(0,0,0,0.1);
    }
    
    .btn {
        padding: 0.65rem 1rem;
        font-size: 1rem;
    }
    
    .btn-lg {
        padding: 0.875rem 1.25rem;
        font-size: 1.1rem;
        min-height: 50px;
    }
    
    .row > .col, .row > [class*="col-"] {
        margin-bottom: 1rem;
    }
    
    /* Form improvements for tablets */
    .form-control, .form-select {
        padding: 0.65rem;
        min-height: 44px;
    }
    
    .input-group-lg .form-control,
    .input-group-lg .form-select {
        min-height: 52px;
    }
    
    /* Navigation adjustments */
    .navbar-nav .nav-link {
        padding: 0.5rem 0.75rem;
    }
}

@media (min-width: 769px) {
    .container-fluid {
        padding-left: 20px;
        padding-right: 20px;
    }
    
    .card {
        box-shadow: 0 4px 12px rgba(0,0,0,0.08);
        transition: transform 0.2s ease, box-shadow 0.2s ease;
    }
    
    .card:hover {
        transform: translateY(-2px);
        box-shadow: 0 6px 20px rgba(0,0,0,0.12);
    }
    
    .btn {
        transition: all 0.2s ease;
    }
    
    .metric-card {
        cursor: pointer;
    }
}
    
    /* Mobile-optimized tables */
    .table-responsive {
        border-radius: 8px;
        overflow: hidden;
    }
    
    .table-responsive table.table-mobile {
        font-size: 0.8rem;
    }
    
    .table-responsive table.table-mobile th,
    .table-responsive table.table-mobile td {
        padding: 0.4rem 0.2rem;
        white-space: nowrap;
    }
    
    /* Progressive disclosure for mobile */
    .d-md-table-cell {
        display: none !important;
    }
    
    .d-lg-table-cell {
        display: none !important;
    }
    
    /* Show more columns on tablet */
    @media (min-width: 768px) {
        .d-md-table-cell {
            display: table-cell !important;
        }
    }
    
    /* Show all columns on desktop */
    @media (min-width: 992px) {
        .d-lg-table-cell {
            display: table-cell !important;
        }
    }
    
    /* Responsive form layouts */
    @media (max-width: 576px) {
        .form-row .col {
            margin-bottom: 0.75rem;
        }
        
        .input-group {
            flex-direction: column;
        }
        
        .input-group .form-control {
            border-radius: 0.375rem !important;
            margin-bottom: 0.5rem;
        }
        
        .input-group .btn {
            border-radius: 0.375rem !important;
        }
    }

/* Enhanced card styling */
.card {
    border: 1px solid #dee2e6;
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    transition: box-shadow 0.15s ease-in-out;
    max-height: 600px; /* Prevent cards from becoming too tall */
    overflow: hidden; /* Ensure scrollable behavior */
}

.card:hover {
    box-shadow: 0 0.25rem 0.75rem rgba(0, 0, 0, 0.1);
}

/* Scrollable card body for content overflow */
.card-body {
    max-height: 500px; /* Maximum height before scrolling */
    overflow-y: auto; /* Enable vertical scrolling */
    overflow-x: hidden; /* Hide horizontal overflow */
    scrollbar-width: thin; /* Thin scrollbar for Firefox */
    scrollbar-color: #dee2e6 transparent; /* Custom scrollbar colors */
}

/* Custom scrollbar styling for webkit browsers */
.card-body::-webkit-scrollbar {
    width: 8px;
}

.card-body::-webkit-scrollbar-track {
    background: transparent;
    border-radius: 4px;
}

.card-body::-webkit-scrollbar-thumb {
    background: #dee2e6;
    border-radius: 4px;
    transition: background 0.2s ease;
}

.card-body::-webkit-scrollbar-thumb:hover {
    background: #adb5bd;
}

.card-header {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-bottom: 1px solid #dee2e6;
    font-weight: 600;
    color: var(--pls-text-dark);
    border-radius: 8px 8px 0 0 !important;
}

/* Status badges enhancement */
.badge {
    font-weight: 500;
    padding: 0.375em 0.75em;
}

.badge-danger {
    background-color: var(--pls-danger);
    color: var(--pls-text-light);
}

.badge-warning {
    background-color: var(--pls-warning);
    color: var(--pls-text-light);
}

.badge-success {
    background-color: var(--pls-success);
    color: var(--pls-text-light);
}

.badge-info {
    background-color: var(--pls-info);
    color: var(--pls-text-light);
}

.badge-primary {
    background-color: var(--pls-primary);
    color: var(--pls-text-dark);
}

.badge-secondary {
    background-color: var(--pls-secondary);
    color: var(--pls-text-light);
}

.badge-light {
    background-color: var(--pls-light);
    color: var(--pls-text-dark);
    border: 1px solid var(--pls-secondary);
}

.badge-dark {
    background-color: var(--pls-secondary);
    color: var(--pls-text-light);
}

/* Photo preview styling */
.photo-preview img {
    max-width: 100%;
    border: 2px solid var(--pls-primary);
    transition: transform 0.2s ease;
}

.photo-preview img:hover {
    transform: scale(1.05);
}

/* Progress bars with smooth animations */
.progress-bar {
    transition: width 0.6s ease;
}

/* Responsive chart containers */
.chart-container {
    position: relative;
    height: 350px;
    margin: 1rem 0;
    background: #fafbfc;
    border-radius: 8px;
    padding: 1rem;
}

@media (max-width: 576px) {
    .chart-container {
        height: 180px;
        padding: 0.5rem;
        margin: 0.5rem 0;
    }
}

@media (min-width: 577px) and (max-width: 768px) {
    .chart-container {
        height: 220px;
        padding: 0.75rem;
    }
}

@media (min-width: 1200px) {
    .chart-container {
        height: 400px;
        padding: 1.5rem;
    }
}

/* Enhanced form controls */
.form-control:focus {
    border-color: var(--pls-primary);
    box-shadow: 0 0 0 0.2rem rgba(255, 193, 7, 0.25);
}

.form-select:focus {
    border-color: var(--pls-primary);
    box-shadow: 0 0 0 0.2rem rgba(255, 193, 7, 0.25);
}

/* Enhanced responsive form layouts */
@media (max-width: 767px) {
    .form-row .col,
    .form-row [class*="col-"] {
        margin-bottom: 1rem;
    }
    
    .input-group {
        margin-bottom: 1rem;
    }
    
    .btn-group {
        width: 100%;
        flex-direction: column;
    }
    
    .btn-group .btn {
        border-radius: 0.375rem !important;
        margin-bottom: 0.25rem;
    }
}

/* File input styling */
input[type="file"] {
    padding: 0.375rem 0.75rem;
}

/* Custom button enhancements */
.btn {
    transition: all 0.15s ease-in-out;
}

.btn:hover {
    transform: translateY(-1px);
}

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

/* Loading states */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(0, 0, 0, 0.3);
    border-radius: 50%;
    border-top-color: var(--pls-primary);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Responsive alert positioning */
#duty-alerts {
    max-width: 90%;
    right: 5% !important;
    z-index: 1050;
}

@media (max-width: 576px) {
    #duty-alerts {
        top: 8px !important;
        right: 8px !important;
        left: 8px !important;
        max-width: none;
    }
    
    .alert {
        padding: 0.6rem;
        font-size: 0.9rem;
        border-radius: 8px;
    }
}

@media (min-width: 577px) and (max-width: 768px) {
    #duty-alerts {
        top: 12px !important;
        right: 12px !important;
        left: 12px !important;
        max-width: none;
    }
}

@media (min-width: 1200px) {
    #duty-alerts {
        max-width: 400px;
        right: 2rem !important;
        top: 1rem !important;
    }
}

/* Dashboard metric cards */
.metric-card {
    background: linear-gradient(135deg, var(--pls-primary) 0%, #e0a800 100%);
    color: var(--pls-text-dark);
    border: none;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 6px 20px rgba(255, 193, 7, 0.3);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    max-height: 400px; /* Limit height for metric cards */
}

.metric-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 193, 7, 0.4);
}

/* Scrollable content for metric cards */
.metric-card .card-body {
    max-height: 350px;
    overflow-y: auto;
    overflow-x: hidden;
}

.metric-card-danger {
    background: linear-gradient(135deg, var(--pls-danger) 0%, #d35400 100%);
    color: var(--pls-text-light);
    border: none;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 6px 20px rgba(230, 126, 34, 0.25);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    max-height: 400px; /* Limit height for danger metric cards */
}

.metric-card-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(230, 126, 34, 0.35);
}

/* Scrollable content for danger metric cards */
.metric-card-danger .card-body {
    max-height: 350px;
    overflow-y: auto;
    overflow-x: hidden;
}

.metric-card-warning {
    background: linear-gradient(135deg, var(--pls-warning) 0%, #e8650e 100%);
    color: var(--pls-text-light);
    border: none;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 6px 20px rgba(253, 126, 20, 0.3);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.metric-card-warning:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(253, 126, 20, 0.4);
}

.metric-card .card-body {
    position: relative;
}

.metric-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100px;
    height: 100px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transform: translate(30px, -30px);
}

/* Enhanced responsive table styling */
.table th {
    border-top: none;
    font-weight: 600;
    color: var(--pls-text-dark);
    background-color: var(--pls-primary);
    position: sticky;
    top: 0;
    z-index: 10;
}

/* Mobile-friendly table scrolling */
@media (max-width: 768px) {
    .table-responsive {
        -webkit-overflow-scrolling: touch;
        border: 1px solid #dee2e6;
    }
    
    .table thead th {
        font-size: 0.8rem;
        padding: 0.5rem 0.3rem;
    }
    
    .table tbody td {
        font-size: 0.85rem;
        padding: 0.5rem 0.3rem;
        vertical-align: middle;
    }
    
    /* Card-based table alternative for mobile */
    .table-cards {
        display: none;
    }
    
    .table-cards.mobile-only {
        display: block;
    }
    
    .table-cards .card {
        margin-bottom: 0.75rem;
        border-left: 4px solid var(--pls-primary);
        max-height: 400px; /* Limit height for table cards */
        overflow: hidden;
    }
    
    /* Scrollable content for table cards */
    .table-cards .card .card-body {
        max-height: 350px;
        overflow-y: auto;
        overflow-x: hidden;
    }
}

@media (min-width: 769px) {
    .table-cards.mobile-only {
        display: none;
    }
}

.table-striped > tbody > tr:nth-of-type(odd) > td {
    background-color: rgba(255, 193, 7, 0.08);
}

/* Responsive navigation enhancements */
.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
}

/* Mobile navigation improvements */
@media (max-width: 991px) {
    .navbar-nav {
        padding-top: 0.5rem;
    }
    
    .navbar-nav .nav-link {
        padding: 0.6rem 1rem;
        margin: 0.2rem 0;
        border-radius: 6px;
        text-align: center;
    }
    
    .navbar-collapse {
        background-color: rgba(255, 255, 255, 0.95);
        margin: 0.5rem -1rem -1rem;
        padding: 1rem;
        border-radius: 0 0 8px 8px;
        box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    }
}

/* Desktop navigation */
@media (min-width: 992px) {
    .navbar-nav .nav-link {
        margin: 0 0.2rem;
        padding: 0.5rem 1rem;
        border-radius: 6px;
        transition: all 0.2s ease;
    }
    
    .navbar-nav .nav-link:hover {
        transform: translateY(-1px);
    }
}

/* Professional button outline variants */
.btn-outline-danger {
    color: var(--pls-danger);
    border-color: var(--pls-danger);
}

.btn-outline-danger:hover {
    background-color: var(--pls-danger);
    border-color: var(--pls-danger);
    color: var(--pls-text-light);
}

.btn-outline-warning {
    color: var(--pls-warning);
    border-color: var(--pls-warning);
}

.btn-outline-warning:hover {
    background-color: var(--pls-warning);
    border-color: var(--pls-warning);
    color: var(--pls-text-light);
}

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

.btn-outline-primary:hover {
    background-color: var(--pls-primary);
    border-color: var(--pls-primary);
    color: var(--pls-text-light);
}

/* Footer spacing */
.main-content {
    min-height: calc(100vh - 200px);
}

/* Print styles */
@media print {
    .btn, .navbar, .card-header .btn, .alert {
        display: none !important;
    }
    
    .card {
        border: 1px solid #000 !important;
        box-shadow: none !important;
    }
    
    .table {
        font-size: 0.8rem;
    }
    
    .page-break {
        page-break-before: always;
    }
}

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

/* High contrast mode support */
@media (prefers-contrast: high) {
    .card {
        border: 2px solid var(--pls-secondary);
    }
    
    .badge {
        border: 1px solid currentColor;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .btn,
    .progress-bar,
    .photo-preview img {
        transition: none;
    }
    
    .loading-spinner {
        animation: none;
    }
}

/* Light theme enhancements */
[data-bs-theme="light"] {
    --bs-body-bg: #fafbfc;
    --bs-body-color: var(--pls-text-dark);
    --bs-primary: var(--pls-primary);
    --bs-secondary: var(--pls-secondary);
}

[data-bs-theme="light"] .card {
    background-color: var(--pls-light);
    border: 1px solid #e3e6ea;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    border-radius: 8px;
}

[data-bs-theme="light"] .table th {
    background-color: var(--pls-primary);
    color: var(--pls-text-dark);
}

[data-bs-theme="light"] .navbar {
    background: linear-gradient(135deg, var(--pls-primary) 0%, #e0a800 100%) !important;
    border-bottom: none;
    box-shadow: 0 2px 12px rgba(255, 193, 7, 0.3);
}

[data-bs-theme="light"] .navbar-brand {
    color: var(--pls-text-dark) !important;
    font-weight: 700;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.1);
}

[data-bs-theme="light"] .nav-link {
    color: rgba(52, 58, 64, 0.8) !important;
}

[data-bs-theme="light"] .nav-link:hover {
    color: var(--pls-text-dark) !important;
    background-color: rgba(0, 0, 0, 0.1);
    border-radius: 4px;
}

[data-bs-theme="light"] .btn-primary {
    background-color: var(--pls-primary);
    border-color: var(--pls-primary);
    color: var(--pls-text-dark);
    font-weight: 600;
}

[data-bs-theme="light"] .btn-primary:hover {
    background-color: #e0a800;
    border-color: #e0a800;
    color: var(--pls-text-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(255, 193, 7, 0.4);
}

[data-bs-theme="light"] .btn-secondary {
    background-color: var(--pls-secondary);
    border-color: var(--pls-secondary);
    color: var(--pls-text-light);
}

[data-bs-theme="light"] .btn-secondary:hover {
    background-color: #495057;
    border-color: #495057;
    color: var(--pls-text-light);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(90, 108, 125, 0.3);
}

[data-bs-theme="light"] .alert-success {
    background-color: rgba(46, 204, 113, 0.1);
    border-color: var(--pls-success);
    color: #27ae60;
    border-left: 4px solid var(--pls-success);
}

[data-bs-theme="light"] .alert-danger {
    background-color: rgba(230, 126, 34, 0.1);
    border-color: var(--pls-danger);
    color: #d35400;
    border-left: 4px solid var(--pls-danger);
}

[data-bs-theme="light"] .alert-info {
    background-color: rgba(23, 162, 184, 0.1);
    border-color: var(--pls-info);
    color: #138496;
    border-left: 4px solid var(--pls-info);
}

[data-bs-theme="light"] .btn-danger {
    background-color: var(--pls-danger);
    border-color: var(--pls-danger);
    color: var(--pls-text-light);
}

[data-bs-theme="light"] .btn-danger:hover {
    background-color: #c0392b;
    border-color: #c0392b;
    color: var(--pls-text-light);
}

[data-bs-theme="light"] .btn-warning {
    background-color: var(--pls-warning);
    border-color: var(--pls-warning);
    color: var(--pls-text-light);
}

[data-bs-theme="light"] .btn-warning:hover {
    background-color: #e8650e;
    border-color: #e8650e;
    color: var(--pls-text-light);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(253, 126, 20, 0.4);
}

[data-bs-theme="light"] .alert-warning {
    background-color: rgba(253, 126, 20, 0.1);
    border-color: var(--pls-warning);
    color: #e8650e;
    border-left: 4px solid var(--pls-warning);
}

/* Dark theme support */
[data-bs-theme="dark"] {
    --bs-body-bg: var(--pls-secondary);
    --bs-body-color: var(--pls-primary);
    --bs-primary: var(--pls-primary);
    --bs-secondary: var(--pls-light);
}

[data-bs-theme="dark"] .card {
    background-color: var(--pls-secondary);
    border: 2px solid var(--pls-primary);
    color: var(--pls-primary);
}

[data-bs-theme="dark"] .table th {
    background-color: var(--pls-primary);
    color: var(--pls-text-dark);
}

[data-bs-theme="dark"] .navbar {
    background-color: var(--pls-secondary) !important;
    border-bottom: 3px solid var(--pls-primary);
}

[data-bs-theme="dark"] .navbar-brand {
    color: var(--pls-primary) !important;
}

[data-bs-theme="dark"] .nav-link {
    color: var(--pls-primary) !important;
}

[data-bs-theme="dark"] .nav-link:hover {
    color: var(--pls-light) !important;
    background-color: rgba(255, 215, 0, 0.1);
}

[data-bs-theme="dark"] .btn-primary {
    background-color: var(--pls-primary);
    border-color: var(--pls-primary);
    color: var(--pls-text-dark);
    border-width: 2px;
}

[data-bs-theme="dark"] .btn-primary:hover {
    background-color: #e6c200;
    border-color: #e6c200;
    color: var(--pls-text-dark);
}

[data-bs-theme="dark"] .btn-secondary {
    background-color: var(--pls-light);
    border-color: var(--pls-light);
    color: var(--pls-text-dark);
}

[data-bs-theme="dark"] .btn-secondary:hover {
    background-color: #f0f0f0;
    border-color: #f0f0f0;
    color: var(--pls-text-dark);
}

[data-bs-theme="dark"] .btn-danger {
    background-color: var(--pls-accent);
    border-color: var(--pls-accent);
    color: var(--pls-text-light);
    border-width: 2px;
}

[data-bs-theme="dark"] .btn-danger:hover {
    background-color: #b91c3c;
    border-color: #b91c3c;
    color: var(--pls-text-light);
}

[data-bs-theme="dark"] .alert-danger {
    background-color: rgba(220, 20, 60, 0.2);
    border-color: var(--pls-accent);
    color: var(--pls-accent);
}

[data-bs-theme="dark"] .alert-success {
    background-color: rgba(255, 215, 0, 0.2);
    border-color: var(--pls-primary);
    color: var(--pls-primary);
}

/* Custom scrollbar for webkit browsers */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

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

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

/* Utility classes for spacing */
.mb-half {
    margin-bottom: 0.5rem !important;
}

.mt-half {
    margin-top: 0.5rem !important;
}

.py-half {
    padding-top: 0.5rem !important;
    padding-bottom: 0.5rem !important;
}

/* Enhanced focus indicators for form controls */
.form-check-input:checked {
    background-color: var(--pls-primary);
    border-color: var(--pls-secondary);
}

.form-check-input:focus {
    box-shadow: 0 0 0 0.25rem rgba(255, 193, 7, 0.25);
}

/* Comprehensive responsive typography */
@media (max-width: 576px) {
    h1 { font-size: 1.6rem; line-height: 1.3; margin-bottom: 0.75rem; }
    h2 { font-size: 1.4rem; line-height: 1.3; margin-bottom: 0.6rem; }
    h3 { font-size: 1.2rem; line-height: 1.4; margin-bottom: 0.5rem; }
    h4 { font-size: 1.1rem; line-height: 1.4; margin-bottom: 0.5rem; }
    h5 { font-size: 1rem; line-height: 1.4; margin-bottom: 0.4rem; }
    h6 { font-size: 0.9rem; line-height: 1.4; margin-bottom: 0.4rem; }
    
    p, .text-body { font-size: 0.9rem; line-height: 1.5; }
    .small, small { font-size: 0.8rem; }
}

@media (min-width: 577px) and (max-width: 768px) {
    h1 { font-size: 1.8rem; }
    h2 { font-size: 1.6rem; }
    h3 { font-size: 1.3rem; }
    h4 { font-size: 1.15rem; }
}

@media (min-width: 1200px) {
    h1 { font-size: 2.2rem; }
    h2 { font-size: 1.9rem; }
    h3 { font-size: 1.6rem; }
}

/* Animation for page transitions */
.page-transition {
    animation: fadeIn 0.3s ease-in-out;
}

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

/* Enhanced modal styling */
.modal-content {
    border: none;
    border-radius: 10px;
}

.modal-header {
    border-bottom: 1px solid var(--pls-secondary);
    padding: 1.5rem;
    background-color: var(--pls-primary);
}

.modal-footer {
    border-top: 1px solid var(--pls-secondary);
    padding: 1.5rem;
}

/* Tooltip customization */
.tooltip {
    font-size: 0.875rem;
}

.tooltip-inner {
    background-color: var(--pls-secondary);
    color: var(--pls-text-light);
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
}

/* Custom list group styling */
.list-group-item {
    border-left: 4px solid transparent;
    transition: border-left-color 0.15s ease-in-out;
}

.list-group-item:hover {
    border-left-color: var(--pls-primary);
    background-color: rgba(255, 215, 0, 0.05);
}

/* Performance optimizations */
.gpu-accelerated {
    transform: translateZ(0);
    will-change: transform;
}

/* Loading placeholder animations */
.placeholder-glow .placeholder {
    animation: placeholder-glow 2s ease-in-out infinite alternate;
}

@keyframes placeholder-glow {
    50% { opacity: 0.2; }
}

/* Enhanced error states */
.is-invalid {
    border-color: var(--pls-danger);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' width='12' height='12' fill='none' stroke='%23e74c3c'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath d='m5.8 3.6.4.4.4-.4M6 8.5V6.5'/%3e%3c/svg%3e");
}

.is-valid {
    border-color: var(--pls-success);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3e%3cpath fill='%2327ae60' d='m2.3 6.73.4.27.4-.27L8 2.5l-.5-.25-3.5 3.5L2 4l-.5.25L2.3 6.73z'/%3e%3c/svg%3e");
}

/* Extra small buttons for compact UI */
.btn-xs {
    padding: 0.125rem 0.375rem;
    font-size: 0.75rem;
    line-height: 1.2;
    border-radius: 0.2rem;
}

/* Responsive design elements */
.badge-sm {
    font-size: 0.65em;
    padding: 0.25em 0.4em;
}

.table-sm td, .table-sm th {
    padding: 0.3rem;
    font-size: 0.875rem;
}

.card-compact {
    margin-bottom: 0.75rem;
}

.card-compact .card-body {
    padding: 0.75rem;
}

/* Responsive grid utilities */
@media (max-width: 576px) {
    .col-sm-6, .col-md-4, .col-lg-3 {
        margin-bottom: 1rem;
    }
    
    .row.no-gutters > .col {
        padding: 0.25rem;
    }
}

/* Touch-friendly interactions */
@media (hover: none) and (pointer: coarse) {
    .btn {
        min-height: 44px;
        padding: 0.7rem 1rem;
    }
    
    .form-control, .form-select {
        min-height: 44px;
        font-size: 16px; /* Prevents zoom on iOS */
    }
    
    .nav-link {
        min-height: 44px;
        display: flex;
        align-items: center;
    }
    
    .metric-card {
        transition: none;
    }
    
    .metric-card:active {
        transform: scale(0.98);
    }
}

/* High-DPI displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .card {
        border-width: 0.5px;
    }
    
    .table {
        border-width: 0.5px;
    }
}

/* Landscape orientation on mobile */
@media (max-width: 768px) and (orientation: landscape) {
    .container-fluid {
        padding-top: 0.5rem;
        padding-bottom: 0.5rem;
    }
    
    .card {
        margin-bottom: 0.5rem;
    }
    
    .chart-container {
        height: 150px;
    }
}

/* Professional color scheme overrides */
.text-success {
    color: var(--pls-success) !important;
}

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

.text-primary {
    color: #b8860b !important;
}

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

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

.bg-success {
    background-color: var(--pls-success) !important;
    color: var(--pls-text-light) !important;
}

.bg-info {
    background-color: var(--pls-info) !important;
    color: var(--pls-text-light) !important;
}

.bg-primary {
    background-color: var(--pls-primary) !important;
    color: var(--pls-text-light) !important;
}

.bg-warning {
    background-color: var(--pls-warning) !important;
    color: var(--pls-text-light) !important;
}

.bg-primary {
    background-color: var(--pls-primary) !important;
    color: var(--pls-text-dark) !important;
}

.bg-danger {
    background-color: var(--pls-danger) !important;
    color: var(--pls-text-light) !important;
}

.border-success {
    border-color: var(--pls-success) !important;
}

.border-info {
    border-color: var(--pls-info) !important;
}

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

.border-warning {
    border-color: var(--pls-warning) !important;
}

.border-danger {
    border-color: var(--pls-danger) !important;
}

.btn-success {
    background-color: var(--pls-success) !important;
    border-color: var(--pls-success) !important;
    color: var(--pls-text-light) !important;
}

.btn-success:hover {
    background-color: #229954 !important;
    border-color: #229954 !important;
    color: var(--pls-text-light) !important;
}

.btn-info {
    background-color: var(--pls-info) !important;
    border-color: var(--pls-info) !important;
    color: var(--pls-text-light) !important;
}

.btn-info:hover {
    background-color: #2980b9 !important;
    border-color: #2980b9 !important;
    color: var(--pls-text-light) !important;
}

.btn-outline-success {
    color: var(--pls-success) !important;
    border-color: var(--pls-success) !important;
}

.btn-outline-success:hover {
    background-color: var(--pls-success) !important;
    border-color: var(--pls-success) !important;
    color: var(--pls-text-light) !important;
}

.btn-outline-info {
    color: var(--pls-info) !important;
    border-color: var(--pls-info) !important;
}

.btn-outline-info:hover {
    background-color: var(--pls-info) !important;
    border-color: var(--pls-info) !important;
    color: var(--pls-text-light) !important;
}

.progress-bar {
    background-color: var(--pls-primary) !important;
}

.progress-bar-success {
    background-color: var(--pls-success) !important;
}

.progress-bar-info {
    background-color: var(--pls-info) !important;
}

.progress-bar-warning {
    background-color: var(--pls-warning) !important;
}

.progress-bar-danger {
    background-color: var(--pls-danger) !important;
}

/* Universal scroll enhancement for all card types */
.card, .metric-card, .metric-card-danger, .metric-card-warning {
    position: relative;
}

/* Ensure all card content is scrollable on small screens */
@media (max-width: 768px) {
    .card {
        max-height: 400px !important;
    }
    
    .card-body {
        max-height: 350px !important;
    }
}

/* Smaller cards on very small screens */
@media (max-width: 480px) {
    .card {
        max-height: 300px !important;
    }
    
    .card-body {
        max-height: 250px !important;
    }
    
    /* Custom scrollbar for mobile */
    .card-body::-webkit-scrollbar {
        width: 6px;
    }
}

/* Enhanced focus states for keyboard navigation */
.card-body:focus {
    outline: 2px solid var(--pls-primary);
    outline-offset: 2px;
}

/* ===== SCROLLING PANELS ===== */

/* Basic Scrolling Panel */
.scroll-panel {
    background: #ffffff;
    border: 1px solid #dee2e6;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    position: relative;
}

.scroll-panel-header {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 1rem 1.25rem;
    border-bottom: 1px solid #dee2e6;
    font-weight: 600;
    color: var(--pls-text-dark);
    position: sticky;
    top: 0;
    z-index: 10;
}

.scroll-panel-body {
    padding: 1.25rem;
    overflow-y: auto;
    overflow-x: hidden;
    scrollbar-width: thin;
    scrollbar-color: #cbd5e0 transparent;
}

/* Custom scrollbar for scrolling panels */
.scroll-panel-body::-webkit-scrollbar {
    width: 8px;
}

.scroll-panel-body::-webkit-scrollbar-track {
    background: transparent;
    border-radius: 4px;
}

.scroll-panel-body::-webkit-scrollbar-thumb {
    background: #cbd5e0;
    border-radius: 4px;
    transition: background 0.2s ease;
}

.scroll-panel-body::-webkit-scrollbar-thumb:hover {
    background: #a0aec0;
}

/* Panel Sizes */
.scroll-panel-sm {
    max-height: 300px;
}

.scroll-panel-sm .scroll-panel-body {
    max-height: 240px;
}

.scroll-panel-md {
    max-height: 400px;
}

.scroll-panel-md .scroll-panel-body {
    max-height: 340px;
}

.scroll-panel-lg {
    max-height: 600px;
}

.scroll-panel-lg .scroll-panel-body {
    max-height: 540px;
}

.scroll-panel-xl {
    max-height: 800px;
}

.scroll-panel-xl .scroll-panel-body {
    max-height: 740px;
}

/* Full Height Panel */
.scroll-panel-full {
    height: calc(100vh - 120px);
    max-height: none;
}

.scroll-panel-full .scroll-panel-body {
    height: calc(100vh - 180px);
    max-height: none;
}

/* Panel Variants */
.scroll-panel-primary {
    border-color: var(--pls-primary);
    box-shadow: 0 2px 8px rgba(30, 58, 138, 0.15);
}

.scroll-panel-primary .scroll-panel-header {
    background: linear-gradient(135deg, var(--pls-primary) 0%, #1e40af 100%);
    color: white;
    border-bottom-color: var(--pls-primary);
}

.scroll-panel-success {
    border-color: var(--pls-success);
    box-shadow: 0 2px 8px rgba(5, 150, 105, 0.15);
}

.scroll-panel-success .scroll-panel-header {
    background: linear-gradient(135deg, var(--pls-success) 0%, #059669 100%);
    color: white;
    border-bottom-color: var(--pls-success);
}

.scroll-panel-warning {
    border-color: var(--pls-warning);
    box-shadow: 0 2px 8px rgba(245, 158, 11, 0.15);
}

.scroll-panel-warning .scroll-panel-header {
    background: linear-gradient(135deg, var(--pls-warning) 0%, #d97706 100%);
    color: white;
    border-bottom-color: var(--pls-warning);
}

.scroll-panel-danger {
    border-color: var(--pls-danger);
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.15);
}

.scroll-panel-danger .scroll-panel-header {
    background: linear-gradient(135deg, var(--pls-danger) 0%, #dc2626 100%);
    color: white;
    border-bottom-color: var(--pls-danger);
}

/* Data Panel (for tables and lists) */
.scroll-panel-data {
    background: #fafafa;
    border: 2px solid #e5e7eb;
}

.scroll-panel-data .scroll-panel-body {
    padding: 0;
    background: white;
}

.scroll-panel-data .scroll-panel-body table {
    margin-bottom: 0;
}

.scroll-panel-data .scroll-panel-body .list-group-item:last-child {
    border-bottom: none;
}

/* Chat/Feed Panel */
.scroll-panel-feed {
    background: linear-gradient(145deg, #f8fafc 0%, #f1f5f9 100%);
}

.scroll-panel-feed .scroll-panel-body {
    padding: 0.5rem;
}

.scroll-panel-feed .scroll-panel-body .message-item {
    background: white;
    margin-bottom: 0.5rem;
    padding: 0.75rem;
    border-radius: 6px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* Mobile Optimizations for Panels */
@media (max-width: 768px) {
    .scroll-panel-lg,
    .scroll-panel-xl {
        max-height: 400px;
    }
    
    .scroll-panel-lg .scroll-panel-body,
    .scroll-panel-xl .scroll-panel-body {
        max-height: 340px;
    }
    
    .scroll-panel-full {
        height: calc(100vh - 80px);
    }
    
    .scroll-panel-full .scroll-panel-body {
        height: calc(100vh - 140px);
    }
    
    .scroll-panel-body {
        padding: 1rem;
    }
    
    .scroll-panel-header {
        padding: 0.75rem 1rem;
        font-size: 0.95rem;
    }
}

@media (max-width: 480px) {
    .scroll-panel-body::-webkit-scrollbar {
        width: 6px;
    }
    
    .scroll-panel-md,
    .scroll-panel-lg,
    .scroll-panel-xl {
        max-height: 300px;
    }
    
    .scroll-panel-md .scroll-panel-body,
    .scroll-panel-lg .scroll-panel-body,
    .scroll-panel-xl .scroll-panel-body {
        max-height: 240px;
    }
}