/* Accessibility Enhancements for PHP Auth System v1.0.0 */

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #000000;
        --secondary-color: #ffffff;
        --text-color: #000000;
        --background-color: #ffffff;
        --border-color: #000000;
        --focus-color: #0000ff;
    }

    .card {
        border: 3px solid var(--border-color);
        background: var(--background-color);
        color: var(--text-color);
    }

    .btn {
        border: 3px solid var(--border-color);
        background: var(--background-color);
        color: var(--text-color);
        font-weight: bold;
    }

    .btn:hover, .btn:focus {
        background: var(--text-color);
        color: var(--background-color);
        border-color: var(--focus-color);
    }

    .form-control, .form-select {
        border: 3px solid var(--border-color);
        background: var(--background-color);
        color: var(--text-color);
    }

    .form-control:focus, .form-select:focus {
        border-color: var(--focus-color);
        box-shadow: 0 0 0 3px rgba(0, 0, 255, 0.3);
    }

    .table {
        border: 3px solid var(--border-color);
    }

    .table th, .table td {
        border: 2px solid var(--border-color);
        color: var(--text-color);
    }

    .alert {
        border: 3px solid var(--border-color);
        background: var(--background-color);
        color: var(--text-color);
    }
}

/* 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;
    }

    .fade-in-up, .slide-in-left, .slide-in-right, .scale-in {
        animation: none !important;
        opacity: 1 !important;
        transform: none !important;
    }

    .hover-lift:hover {
        transform: none !important;
    }

    .animate-float {
        animation: none !important;
    }
}

/* Focus Management */
.focus-visible:focus-visible {
    outline: 3px solid #007bff;
    outline-offset: 2px;
    box-shadow: 0 0 0 5px rgba(0, 123, 255, 0.25);
}

.focus-ring:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.5);
}

/* Skip Links */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: #000;
    color: #fff;
    padding: 8px;
    text-decoration: none;
    z-index: 1000;
    border-radius: 4px;
    font-weight: bold;
}

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

/* Screen Reader Only Content */
.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;
}

.sr-only:focus {
    position: static;
    width: auto;
    height: auto;
    padding: 0.5rem;
    margin: 0;
    overflow: visible;
    clip: auto;
    white-space: normal;
    background: #fff;
    border: 2px solid #007bff;
    border-radius: 4px;
    z-index: 1000;
}

/* Accessible Form Elements */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #333;
}

.form-control, .form-select {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
    line-height: 1.5;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-control:focus, .form-select:focus {
    border-color: #007bff;
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.25);
    outline: none;
}

.form-control:invalid, .form-select:invalid {
    border-color: #dc3545;
    box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.25);
}

.form-error {
    color: #dc3545;
    font-size: 0.875rem;
    margin-top: 0.25rem;
    display: block;
}

.form-success {
    color: #28a745;
    font-size: 0.875rem;
    margin-top: 0.25rem;
    display: block;
}

/* Accessible Buttons */
.btn-accessible {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    min-height: 44px;
    padding: 0.75rem 1.5rem;
    border: 2px solid transparent;
    border-radius: 4px;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
    background: #007bff;
    color: #fff;
}

.btn-accessible:hover, .btn-accessible:focus {
    background: #0056b3;
    border-color: #0056b3;
    color: #fff;
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.25);
}

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

.btn-accessible:disabled, .btn-accessible[aria-disabled="true"] {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

/* Accessible Links */
.link-accessible {
    color: #007bff;
    text-decoration: underline;
    transition: color 0.2s ease;
}

.link-accessible:hover, .link-accessible:focus {
    color: #0056b3;
    outline: 2px solid #007bff;
    outline-offset: 2px;
}

.link-accessible:visited {
    color: #6f42c1;
}

/* Accessible Tables */
.table-accessible {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1rem;
}

.table-accessible th,
.table-accessible td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

.table-accessible th {
    background: #f8f9fa;
    font-weight: 600;
    border-top: 2px solid #dee2e6;
}

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

.table-accessible caption {
    caption-side: top;
    margin-bottom: 0.5rem;
    font-weight: 600;
    text-align: left;
}

/* Accessible Navigation */
.nav-accessible {
    list-style: none;
    padding: 0;
    margin: 0;
}

.nav-accessible li {
    display: inline-block;
    margin-right: 1rem;
}

.nav-accessible a {
    display: block;
    padding: 0.5rem 1rem;
    text-decoration: none;
    border-radius: 4px;
    transition: background-color 0.2s ease;
}

.nav-accessible a:focus,
.nav-accessible a:hover {
    background: #e9ecef;
    outline: 2px solid #007bff;
    outline-offset: -2px;
}

.nav-accessible a[aria-current="page"] {
    background: #007bff;
    color: #fff;
}

/* Accessible Modals */
.modal-accessible {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1050;
    padding: 1rem;
}

.modal-accessible[aria-hidden="true"] {
    display: none;
}

.modal-dialog-accessible {
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    max-width: 90vw;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
}

.modal-header-accessible {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid #dee2e6;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title-accessible {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
}

.modal-close-accessible {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 4px;
    transition: background-color 0.2s ease;
}

.modal-close-accessible:hover,
.modal-close-accessible:focus {
    background: #f8f9fa;
    outline: 2px solid #007bff;
    outline-offset: -2px;
}

.modal-body-accessible {
    padding: 1.5rem;
}

.modal-footer-accessible {
    padding: 1rem 1.5rem;
    border-top: 1px solid #dee2e6;
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
}

/* Accessible Alerts */
.alert-accessible {
    padding: 1rem 1.5rem;
    border-radius: 4px;
    margin-bottom: 1rem;
    border: 1px solid transparent;
    position: relative;
}

.alert-accessible[role="alert"] {
    border-left: 4px solid;
}

.alert-success-accessible {
    background: #d4edda;
    border-color: #c3e6cb;
    color: #155724;
}

.alert-success-accessible[role="alert"] {
    border-left-color: #28a745;
}

.alert-error-accessible {
    background: #f8d7da;
    border-color: #f5c6cb;
    color: #721c24;
}

.alert-error-accessible[role="alert"] {
    border-left-color: #dc3545;
}

.alert-warning-accessible {
    background: #fff3cd;
    border-color: #ffeaa7;
    color: #856404;
}

.alert-warning-accessible[role="alert"] {
    border-left-color: #ffc107;
}

.alert-info-accessible {
    background: #d1ecf1;
    border-color: #bee5eb;
    color: #0c5460;
}

.alert-info-accessible[role="alert"] {
    border-left-color: #17a2b8;
}

/* Accessible Progress Bars */
.progress-accessible {
    height: 1.5rem;
    background: #e9ecef;
    border-radius: 4px;
    overflow: hidden;
    position: relative;
}

.progress-bar-accessible {
    height: 100%;
    background: #007bff;
    transition: width 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 600;
    font-size: 0.875rem;
}

/* Accessible Tooltips */
.tooltip-accessible {
    position: relative;
    display: inline-block;
}

.tooltip-content-accessible {
    position: absolute;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    background: #333;
    color: #fff;
    padding: 0.5rem 0.75rem;
    border-radius: 4px;
    font-size: 0.875rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
    z-index: 1000;
}

.tooltip-content-accessible::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 5px solid transparent;
    border-top-color: #333;
}

.tooltip-accessible:hover .tooltip-content-accessible,
.tooltip-accessible:focus .tooltip-content-accessible {
    opacity: 1;
    visibility: visible;
}

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

.loading-accessible::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid #007bff;
    border-top: 2px solid transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Accessible Color Indicators */
.color-indicator-accessible {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    border-radius: 50%;
    margin-right: 0.5rem;
    vertical-align: middle;
}

/* Accessible Status Badges */
.status-badge-accessible {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

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

.status-error-accessible {
    background: #f8d7da;
    color: #721c24;
}

.status-warning-accessible {
    background: #fff3cd;
    color: #856404;
}

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

/* Accessible Icons with Text */
.icon-text-accessible {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.icon-text-accessible i,
.icon-text-accessible svg {
    flex-shrink: 0;
}

/* Accessible Breadcrumbs */
.breadcrumb-accessible {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.breadcrumb-accessible li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.breadcrumb-accessible li:not(:last-child)::after {
    content: '/';
    color: #6c757d;
    font-weight: bold;
}

.breadcrumb-accessible a {
    color: #007bff;
    text-decoration: none;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    transition: background-color 0.2s ease;
}

.breadcrumb-accessible a:hover,
.breadcrumb-accessible a:focus {
    background: #e9ecef;
    outline: 2px solid #007bff;
    outline-offset: -2px;
}

.breadcrumb-accessible .current {
    color: #6c757d;
    font-weight: 600;
}

/* Accessible Pagination */
.pagination-accessible {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
}

.pagination-accessible li {
    display: flex;
}

.pagination-accessible a,
.pagination-accessible span {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    min-height: 44px;
    padding: 0.5rem 0.75rem;
    border: 2px solid #dee2e6;
    border-radius: 4px;
    text-decoration: none;
    color: #007bff;
    font-weight: 500;
    transition: all 0.2s ease;
}

.pagination-accessible a:hover,
.pagination-accessible a:focus {
    background: #e9ecef;
    border-color: #007bff;
    outline: 2px solid #007bff;
    outline-offset: -2px;
}

.pagination-accessible .current {
    background: #007bff;
    border-color: #007bff;
    color: #fff;
}

.pagination-accessible .disabled {
    opacity: 0.6;
    pointer-events: none;
}

/* Accessible Dropdowns */
.dropdown-accessible {
    position: relative;
    display: inline-block;
}

.dropdown-toggle-accessible {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border: 2px solid #dee2e6;
    border-radius: 4px;
    background: #fff;
    cursor: pointer;
    transition: border-color 0.2s ease;
}

.dropdown-toggle-accessible:hover,
.dropdown-toggle-accessible:focus {
    border-color: #007bff;
    outline: 2px solid #007bff;
    outline-offset: -2px;
}

.dropdown-menu-accessible {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    border: 2px solid #dee2e6;
    border-radius: 4px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    max-height: 200px;
    overflow-y: auto;
    display: none;
}

.dropdown-menu-accessible.show {
    display: block;
}

.dropdown-item-accessible {
    display: block;
    padding: 0.75rem 1rem;
    text-decoration: none;
    color: #333;
    border-bottom: 1px solid #f8f9fa;
    transition: background-color 0.2s ease;
}

.dropdown-item-accessible:hover,
.dropdown-item-accessible:focus {
    background: #f8f9fa;
    outline: 2px solid #007bff;
    outline-offset: -2px;
}

.dropdown-item-accessible:last-child {
    border-bottom: none;
}

/* Accessible Tabs */
.tabs-accessible {
    border-bottom: 2px solid #dee2e6;
    margin-bottom: 1rem;
}

.tab-list-accessible {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    gap: 0.25rem;
}

.tab-accessible {
    display: flex;
}

.tab-button-accessible {
    padding: 0.75rem 1.5rem;
    border: 2px solid transparent;
    border-bottom: none;
    background: #f8f9fa;
    color: #6c757d;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s ease;
    border-radius: 4px 4px 0 0;
}

.tab-button-accessible:hover,
.tab-button-accessible:focus {
    background: #e9ecef;
    color: #333;
    outline: 2px solid #007bff;
    outline-offset: -2px;
}

.tab-button-accessible[aria-selected="true"] {
    background: #fff;
    color: #007bff;
    border-color: #dee2e6;
    border-bottom-color: #fff;
    margin-bottom: -2px;
}

.tab-panel-accessible {
    padding: 1.5rem;
    border: 2px solid #dee2e6;
    border-top: none;
    background: #fff;
    display: none;
}

.tab-panel-accessible[aria-hidden="false"] {
    display: block;
}

/* Accessible Accordions */
.accordion-accessible {
    border: 2px solid #dee2e6;
    border-radius: 4px;
    overflow: hidden;
}

.accordion-item-accessible {
    border-bottom: 1px solid #dee2e6;
}

.accordion-item-accessible:last-child {
    border-bottom: none;
}

.accordion-header-accessible {
    margin: 0;
}

.accordion-button-accessible {
    width: 100%;
    padding: 1rem 1.5rem;
    border: none;
    background: #f8f9fa;
    color: #333;
    text-align: left;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.accordion-button-accessible:hover,
.accordion-button-accessible:focus {
    background: #e9ecef;
    outline: 2px solid #007bff;
    outline-offset: -2px;
}

.accordion-button-accessible[aria-expanded="true"] {
    background: #007bff;
    color: #fff;
}

.accordion-panel-accessible {
    padding: 1rem 1.5rem;
    background: #fff;
    display: none;
}

.accordion-panel-accessible[aria-hidden="false"] {
    display: block;
}

/* Print Accessibility */
@media print {
    .sr-only {
        position: static;
        width: auto;
        height: auto;
        padding: 0;
        margin: 0;
        overflow: visible;
        clip: auto;
        white-space: normal;
    }

    .skip-link,
    .btn-accessible[aria-hidden="true"],
    .modal-accessible {
        display: none !important;
    }

    .link-accessible {
        text-decoration: underline !important;
    }

    .alert-accessible {
        border: 2px solid #000 !important;
        background: #fff !important;
        color: #000 !important;
    }
}