/* Accessibility Enhancements for Observatory */

/* Skip Navigation Link */
.skip-nav {
    position: absolute;
    top: -100px;
    left: 20px;
    background: #000;
    color: #fff;
    padding: 12px 20px;
    text-decoration: none;
    border-radius: 0 0 8px 8px;
    z-index: 10000;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.skip-nav:focus {
    top: 0;
    outline: 3px solid #0066cc;
    outline-offset: 2px;
}

/* Visible Focus Indicators */
*:focus-visible {
    outline: 2px solid #0066cc;
    outline-offset: 3px;
    border-radius: 4px;
}

button:focus-visible,
a:focus-visible,
input:focus-visible {
    outline: 2px solid #0066cc;
    outline-offset: 3px;
}

/* Remove default focus for mouse users, keep for keyboard */
*:focus:not(:focus-visible) {
    outline: none;
}

/* ARIA Labels and Screen Reader Support */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.sr-only-focusable:focus,
.sr-only-focusable:active {
    position: static;
    width: auto;
    height: auto;
    overflow: visible;
    clip: auto;
    white-space: normal;
}

/* Ensure sufficient color contrast */
.card-title,
.dock-label,
.nav-item {
    color: #1a1a1a;
    /* Contrast ratio > 7:1 on white */
}

.card-content {
    color: #333333;
    /* Contrast ratio > 4.5:1 on white */
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    * {
        border-color: #000 !important;
    }

    .card,
    .status-panel,
    .help-panel {
        border: 2px solid #000 !important;
    }

    a,
    button {
        text-decoration: underline;
    }
}

/* 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;
    }

    /* Disable 3D animations */
    .observatory-container {
        animation: none !important;
    }
}

/* Keyboard Navigation Improvements */
.dock-item:focus,
.card-minimize:focus,
.card-close:focus {
    box-shadow: 0 0 0 3px #0066cc;
    z-index: 1000;
}

/* Touch Target Sizing (minimum 44x44px) */
button,
a,
.dock-item {
    min-width: 44px;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

/* Card actions: smaller refined size for desktop glassmorphism UI */
.card-action {
    min-width: 26px;
    min-height: 26px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

/* Language and Text Direction Support */
html[dir="rtl"] {
    .status-panel {
        right: auto;
        left: 20px;
    }

    .help-panel {
        right: auto;
        left: 20px;
    }
}

/* Improved Link Visibility */
a {
    text-decoration-skip-ink: auto;
}

a:hover {
    text-decoration: underline;
}

/* Form Accessibility */
input,
select,
textarea {
    border: 2px solid #666;
}

input:focus,
select:focus,
textarea:focus {
    border-color: #0066cc;
    outline: 2px solid #0066cc;
    outline-offset: 2px;
}

/* Error States */
.error,
[aria-invalid="true"] {
    border-color: #d32f2f;
}

.error-message {
    color: #d32f2f;
    font-weight: 600;
}

/* Loading States */
[aria-busy="true"] {
    position: relative;
}

[aria-busy="true"]::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    border: 2px solid #000;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

@media (prefers-reduced-motion: reduce) {
    [aria-busy="true"]::after {
        animation: none;
        content: '⏳';
        border: none;
    }
}


/* Print Styles */
@media print {

    .skip-nav,
    .status-panel,
    .help-panel,
    .dock {
        display: none !important;
    }

    .card {
        page-break-inside: avoid;
    }
}