/* Advanced Responsive Design */

/* Mobile First Approach */
@media (max-width: 576px) {
    /* Hide elements on very small screens */
    .d-none-mobile {
        display: none !important;
    }
    
    /* Stack all columns */
    .row .col-md-6,
    .row .col-md-4,
    .row .col-md-8,
    .row .col-lg-3,
    .row .col-lg-4 {
        margin-bottom: 0.5rem;
    }
    
    /* Make buttons full width */
    .btn-group .btn {
        flex: 1;
        margin: 0.1rem;
    }
    
    /* Optimize table for mobile */
    .table-responsive {
        font-size: 0.75rem;
    }
    
    .table th,
    .table td {
        padding: 0.25rem 0.1rem;
        white-space: nowrap;
    }
    
    /* Mobile navigation */
    .navbar-nav {
        flex-direction: column;
    }
    
    .navbar-nav .nav-item {
        margin: 0.25rem 0;
    }
    
    /* Mobile cards */
    .card {
        margin-bottom: 0.75rem;
    }
    
    .card-body {
        padding: 0.75rem;
    }
    
    /* Mobile forms */
    .form-control,
    .form-select {
        font-size: 16px; /* Prevents zoom on iOS */
        padding: 0.75rem;
    }
    
    /* Mobile alerts */
    .alert {
        padding: 0.75rem;
        font-size: 0.9rem;
    }
    
    /* Mobile modals */
    .modal-dialog {
        margin: 0.25rem;
        max-width: calc(100% - 0.5rem);
    }
    
    .modal-content {
        border-radius: 8px;
    }
    
    .modal-header,
    .modal-body,
    .modal-footer {
        padding: 0.75rem;
    }
}

/* Tablet Portrait */
@media (min-width: 577px) and (max-width: 768px) {
    .table-responsive {
        font-size: 0.85rem;
    }
    
    .table th,
    .table td {
        padding: 0.5rem 0.25rem;
    }
    
    .btn-group .btn {
        padding: 0.5rem 0.75rem;
        font-size: 0.85rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .form-control,
    .form-select {
        padding: 0.75rem;
    }
}

/* Tablet Landscape */
@media (min-width: 769px) and (max-width: 992px) {
    .sidebar {
        width: 220px;
    }
    
    .main-content {
        margin-right: 220px;
    }
    
    .table-responsive {
        font-size: 0.9rem;
    }
    
    .btn-group .btn {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }
}

/* Desktop Small */
@media (min-width: 993px) and (max-width: 1200px) {
    .sidebar {
        width: 250px;
    }
    
    .main-content {
        margin-right: 250px;
    }
}

/* Desktop Large */
@media (min-width: 1201px) {
    .sidebar {
        width: 280px;
    }
    
    .main-content {
        margin-right: 280px;
    }
}

/* Touch Device Optimizations */
@media (hover: none) and (pointer: coarse) {
    /* Increase touch targets */
    .btn {
        min-height: 44px;
        min-width: 44px;
    }
    
    .nav-link {
        min-height: 44px;
        padding: 0.75rem 1rem;
    }
    
    .form-control,
    .form-select {
        min-height: 44px;
    }
    
    /* Remove hover effects on touch devices */
    .btn:hover,
    .card:hover,
    .nav-link:hover {
        transform: none;
        box-shadow: none;
    }
}

/* High DPI Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .sidebar-logo,
    .login-logo {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* Print Optimizations */
@media print {
    * {
        -webkit-print-color-adjust: exact !important;
        color-adjust: exact !important;
    }
    
    .sidebar,
    .top-navbar,
    .btn,
    .alert,
    .modal {
        display: none !important;
    }
    
    .main-content {
        margin-right: 0 !important;
        padding: 0 !important;
    }
    
    .content-wrapper {
        padding: 0 !important;
    }
    
    .page-header {
        background: none !important;
        border: none !important;
        box-shadow: none !important;
        margin-bottom: 1rem !important;
    }
    
    .card {
        border: 1px solid #000 !important;
        box-shadow: none !important;
        break-inside: avoid;
    }
    
    .table {
        font-size: 12px !important;
        border-collapse: collapse !important;
    }
    
    .table th,
    .table td {
        border: 1px solid #000 !important;
        padding: 0.25rem !important;
    }
    
    .table thead th {
        background: #f8f9fa !important;
        font-weight: bold !important;
    }
    
    /* Page breaks */
    .page-break-before {
        page-break-before: always;
    }
    
    .page-break-after {
        page-break-after: always;
    }
    
    .page-break-inside-avoid {
        page-break-inside: avoid;
    }
}

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

@media (prefers-contrast: high) {
    .btn {
        border-width: 2px;
    }
    
    .form-control {
        border-width: 2px;
    }
    
    .card {
        border-width: 2px;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    /* Note: This is commented out as we're using a white-only design */
    /*
    body {
        background-color: #1a1a1a;
        color: #ffffff;
    }
    
    .card {
        background-color: #2d2d2d;
        border-color: #404040;
    }
    
    .form-control {
        background-color: #2d2d2d;
        border-color: #404040;
        color: #ffffff;
    }
    */
}

/* Container Queries (Future-proofing) */
@container (max-width: 400px) {
    .btn-group {
        flex-direction: column;
    }
    
    .btn-group .btn {
        margin-bottom: 0.25rem;
    }
}

/* Focus Management */
.btn:focus,
.form-control:focus,
.form-select:focus,
.nav-link:focus {
    outline: 2px solid #000000;
    outline-offset: 2px;
}

/* Skip Links for Accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: #000000;
    color: #ffffff;
    padding: 8px;
    text-decoration: none;
    z-index: 1000;
}

.skip-link:focus {
    top: 6px;
}

/* Loading States */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #000000;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}