/* accessibility.css
 * ICILS 2023 — accessibility primitives only.
 *
 * What lives here:
 *   - sr-only / skip-link
 *   - Focus indicators (buttons, inputs, tabulator cells/rows, role="button")
 *   - Custom multiselect filter dropdown chrome
 *   - Hidden-input clipping fixes for screen readers
 *   - Loading state + spinner
 *   - prefers-contrast / prefers-reduced-motion / responsive-a11y / print queries
 *
 * What was removed (now lives elsewhere — see file headers):
 *   - .focus-tooltip                       -> icils.css
 *   - .button.is-iea-primary/.secondary    -> icils.css
 *   - .legend-item / .legend-symbol        -> tableStyles.css
 *   - .tabulator-group-toggle              -> tableStyles.css
 *   - .tabulator-group:has(#countries…)    -> tableStyles.css
 *   - fullscreen tabulator-header overflow -> fullscreen.css
 */

/* ============================================================
   SCREEN READER ONLY
   ============================================================ */
.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;
}

/* ============================================================
   SKIP LINKS
   ============================================================ */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--iea-icils-dark-gray);
    color: #fff;
    padding: 8px 12px;
    text-decoration: none;
    border-radius: 4px;
    z-index: 1000;
    font-weight: 600;
    transition: top 0.3s ease;
}

.skip-link:hover {
    background: var(--iea-icils-dark-gray);
    color: #fff;
}

.skip-link:focus {
    top: 6px;
    background: var(--iea-icils-dark-gray);
    color: #fff;
    outline: 3px solid var(--iea-icils-yellow);
    outline-offset: 2px;
}

/* ============================================================
   FOCUS INDICATORS
   ============================================================ */
.button:focus,
.input:focus,
.select select:focus,
[tabindex]:focus {
    outline: 3px solid var(--iea-icils-teal);
    outline-offset: 2px;
}

[role="button"][tabindex="0"]:focus {
    outline: 2px solid var(--iea-icils-teal);
    outline-offset: 1px;
    border-radius: 2px;
}

[role="button"][tabindex="0"]:hover {
    background-color: rgba(0, 123, 255, 0.1);
    border-radius: 2px;
}

.symbol-accessible {
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: all 0.2s ease;
    user-select: none;
    position: relative;
}

.symbol-accessible:hover {
    background-color: rgba(0, 0, 0, 0.1);
    transform: scale(1.1);
}

.symbol-accessible:focus {
    outline: 2px solid var(--iea-icils-teal);
    outline-offset: 2px;
    background-color: rgba(0, 0, 0, 0.1);
}

.symbol-accessible:active {
    transform: scale(0.95);
}

.note:focus {
    outline: 2px solid var(--iea-icils-teal);
    outline-offset: 1px;
    border-radius: 2px;
}

/* ============================================================
   TABLE FOCUS
   ============================================================ */
.tabulator-cell:focus {
    outline: 2px solid var(--iea-icils-teal);
    outline-offset: -2px;
}

.tabulator-row:focus-within {
    outline: 2px solid var(--iea-icils-teal);
    outline-offset: 1px;
}

#table-container .tabulator-tableholder:focus {
    outline: 2px solid var(--iea-icils-teal);
    outline-offset: 2px;
}

#table-container .tabulator-cell {
    cursor: pointer;
}

#table-container .tabulator-cell:focus {
    outline: 2px solid var(--iea-icils-teal);
    outline-offset: 1px;
}

/* ============================================================
   CUSTOM MULTISELECT FILTER DROPDOWN
   ============================================================ */
.tabulator-header-filter-container {
    position: relative;
    width: 100%;
    margin-top: 4px;
    z-index: 10;
}

.tabulator-header-filter-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    color: #666;
    margin-bottom: 2px;
}

.tabulator-header-filter-button {
    width: 100%;
    padding: 0.25rem 0.5rem;
    border: 1px solid #ccc;
    border-radius: 4px;
    background-color: #fff;
    color: #333;
    font-size: 0.875rem;
    cursor: pointer;
    text-align: left;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
    position: relative;
    min-height: 2rem;
}

.tabulator-header-filter-button:hover {
    background-color: #f0f0f0;
    border-color: #bbb;
}

.tabulator-header-filter-button:focus {
    outline: none;
    border-color: var(--iea-icils-teal);
    box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.25);
}

.tabulator-header-filter-button::after {
    content: '▼';
    font-size: 0.7em;
    color: #666;
    transition: transform 0.2s ease;
}

.tabulator-header-filter-button[aria-expanded="true"]::after {
    transform: rotate(180deg);
}

.tabulator-header-filter-dropdown {
    position: fixed;
    background-color: #fff;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 1002;
    max-height: 250px;
    overflow-y: auto;
    display: none;
    margin-top: 2px;
    min-width: 300px;
}

.tabulator-header-filter-option {
    display: flex;
    align-items: center;
    padding: 0.5rem 0.75rem;
    cursor: pointer;
    transition: background-color 0.2s ease;
    border-bottom: 1px solid #f0f0f0;
    min-height: 2.5rem;
    background-color: #fff;
    color: #333;
}

.tabulator-header-filter-option:last-child {
    border-bottom: none;
}

.tabulator-header-filter-option:hover {
    background-color: #f8f9fa;
}

.tabulator-header-filter-option:has(.tabulator-header-filter-checkbox:focus) {
    background-color: #e3f2fd;
    outline: 2px solid var(--iea-icils-teal);
    outline-offset: -2px;
}

.tabulator-header-filter-checkbox {
    margin-right: 0.75rem;
    width: 1rem;
    height: 1rem;
    accent-color: var(--iea-icils-teal);
    flex-shrink: 0;
}

.tabulator-header-filter-checkbox:focus {
    outline: 2px solid var(--iea-icils-teal);
    outline-offset: 2px;
}

.tabulator-header-filter-option-label {
    display: flex;
    align-items: center;
    flex-grow: 1;
    font-size: 1.5rem;
    color: #333;
    cursor: pointer;
}

.tabulator-header-filter-option .symbol {
    font-size: 1.1em;
    margin-right: 0.5rem;
    min-width: 1rem;
    width: 1rem;
    text-align: center;
    display: inline-block;
    line-height: 1;
}

.tabulator-header-filter-clear {
    position: absolute;
    right: 24px;
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    border: none;
    background: none;
    color: #666;
    font-size: 12px;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.2s ease;
    z-index: 1;
}

.tabulator-header-filter-clear.has-selections {
    display: flex;
}

.tabulator-header-filter-clear:hover {
    background-color: #f0f0f0;
    color: #333;
}

.tabulator-header-filter-clear:focus {
    outline: 2px solid var(--iea-icils-teal);
    outline-offset: 2px;
}

/* ============================================================
   HIDDEN INPUT CLIPPING
   (Tabulator inserts hidden inputs we don't want in the a11y tree)
   ============================================================ */
.tabulator-header-filter-container input[type="text"][style*="position: absolute"][style*="opacity: 0"],
.tabulator input[type="text"][style*="position: absolute"][style*="opacity: 0"] {
    position: absolute !important;
    opacity: 0 !important;
    pointer-events: none !important;
    width: 1px !important;
    height: 1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
    margin: -1px !important;
    padding: 0 !important;
    z-index: -1 !important;
}

.tabulator-header-filter-container input[type="text"][style*="position: absolute"][style*="opacity: 0"]:focus,
.tabulator input[type="text"][style*="position: absolute"][style*="opacity: 0"]:focus {
    outline: none !important;
    box-shadow: none !important;
}

/* ============================================================
   LOADING STATE
   ============================================================ */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--iea-icils-teal);
    border-top: 2px solid transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* ============================================================
   HIGH CONTRAST
   ============================================================ */
@media (prefers-contrast: high) {
    .button.is-iea-primary,
    .button.is-iea-secondary {
        background-color: var(--iea-icils-dark-gray);
        color: #fff;
        border: 2px solid #fff;
    }

    .legend-symbol {
        color: var(--iea-icils-dark-gray) !important;
    }
}

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

/* ============================================================
   RESPONSIVE A11Y
   ============================================================ */
@media (max-width: 768px) {
    .buttons {
        justify-content: center;
    }

    .buttons .button {
        margin-bottom: 0.5rem;
    }

    .table-container {
        font-size: 0.9em;
    }

    .tabulator-header-filter-button {
        font-size: 0.75rem;
        padding: 0.25rem 0.5rem;
    }

    .tabulator-header-filter-label {
        font-size: 0.7rem;
    }
}

/* ============================================================
   PRINT
   ============================================================ */
@media print {
    .buttons,
    .skip-link,
    .fullscreen-toggle {
        display: none !important;
    }

    .table-container {
        box-shadow: none;
        border: 1px solid #ccc;
    }

    .focus-tooltip {
        display: none !important;
    }
}