/**
 * ============================================================================
 * WCAG CHECKERS STYLES
 * ============================================================================
 *
 * DOEL:
 * Gemeenschappelijke styling voor alle WCAG checker tools.
 * Zorgt voor een consistente, toegankelijke en professionele UI.
 *
 * ARCHITECTUUR:
 * Dit bestand bevat ALLEEN de styling voor de checker tools zelf.
 * Theme styling (header, footer, navigation) zit in style.css
 *
 * DESIGN SYSTEEM:
 * Gebruikt CSS custom properties (design tokens) uit css/designtokens.css:
 * - Kleuren: var(--theme-060), var(--red-060), etc.
 * - Spacing: var(--space-sm), var(--space-md), var(--space-xl)
 * - Typography: var(--size-16), var(--system)
 * - Effects: var(--shadow-md), var(--radius-sm), var(--transition-base)
 *
 * BESTAND STRUCTUUR:
 *
 * 1. ALGEMENE STYLES (regel 1-80)
 *    - Screen reader only classes (.screen-reader-text)
 *    - Form styling (textarea, buttons)
 *    - Button groups en form groups
 *
 * 2. RESULTAAT TABELLEN (regel 81-350)
 *    - .results-container - Hoofdcontainer voor resultaten
 *    - Tabel opmaak (thead, tbody, tr, td)
 *    - Responsive breakpoints voor tabellen
 *
 * 3. ISSUES LIJST STYLING (regel 351-550)
 *    - .issues-list - Lijst van toegankelijkheidsproblemen
 *    - .issue-item.fail - WCAG fouten (rood)
 *    - .issue-item.warning - Waarschuwingen (oranje)
 *    - .issue-item.info - Informatief (blauw)
 *    - .issue-item.pass - Geslaagd (groen)
 *
 * 4. COPY BUTTONS & INTERACTIE (regel 551-650)
 *    - .copy-button - Kopieer naar clipboard functionaliteit
 *    - Hover en focus states
 *    - Success feedback (.copied state)
 *
 * 5. PROGRESS BARS (regel 651-700)
 *    - #analysis-progress - Fixed progress bar tijdens analyse
 *    - Smooth animaties voor voortgang
 *
 * 6. CONTRAST CHECKER (regel 701-818)
 *    - .contrast-checker - Specifieke styling voor contrast tool
 *    - Color squares en contrast ratio weergave
 *    - AA/AAA compliance indicators
 *
 * ACCESSIBILITY FEATURES:
 * ✅ Focus indicators - Duidelijke 3px outline voor keyboard users
 * ✅ Color contrast - Alle tekst voldoet aan WCAG AA (4.5:1)
 * ✅ Screen reader support - .screen-reader-text voor extra context
 * ✅ Responsive - Werkt op desktop, tablet en mobile
 * ✅ Dark mode ready - Gebruikt CSS variables voor theming
 *
 * KLEUR CODERING VOOR ISSUES:
 * - Rood (#dc3232)   - FAIL - WCAG overtreding, MOET worden opgelost
 * - Oranje (#f56e28) - WARNING - Potentieel probleem, check handmatig
 * - Blauw (#00a0d2)  - INFO - Informatief, geen actie nodig
 * - Groen (#46b450)  - PASS - Geen problemen gevonden
 *
 * RESPONSIVE BREAKPOINTS:
 * - Desktop: > 900px (volledige tabel layout)
 * - Tablet: 768px - 900px (compact tabel)
 * - Mobile: < 768px (gestapelde layout)
 *
 * GEBRUIKT DOOR:
 * - Accessibility Checker (/inc/accessibility-checker.php)
 * - Structure Checker (/inc/structure-checker.php)
 * - Image Checker (/inc/image-checker.php)
 * - Link Checker (/inc/link-checker.php)
 * - Button Checker (/inc/button-checker.php)
 * - Forms Checker (/inc/forms-checker.php)
 * - Code Checker (/inc/code-checker.php)
 * - Contrast Checker (/inc/contrast-checker.php)
 *
 * @author Niek Derksen
 * @version 1.2.0
 * @since 1.0.0
 *
 * DEPENDENCIES:
 * - css/designtokens.css - Design system tokens
 * - style.css - Theme base styles
 */

/* ============================
   ALGEMENE STYLES
   ============================ */

/* Toegankelijkheid: screen reader only tekst */
.screen-reader-text {
    position: absolute;
    left: -10000px;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(1px, 1px, 1px, 1px);
    clip-path: inset(50%);
    white-space: nowrap;
}

/* Focus state voor skip links */
.screen-reader-text:focus-visible {
    position: absolute;
    left: 6px;
    top: 7px;
    z-index: 999999;
    clip: auto;
    clip-path: none;
    display: block;
    font-size: var(--size-14);
    font-weight: 600;
    text-decoration: none;
    line-height: normal;
    padding: 15px 23px 14px;
    color: var(--blue-070);
    background-color: var(--basic-white);
    box-shadow: 0 0 2px 2px rgba(0, 0, 0, 0.6);
    border-radius: var(--radius-sm);
    width: auto;
    height: auto;
}

.shortcode textarea {
    width: 100%;
    min-height: 200px;
    color: var(--basic-black);
    font-family: monospace;
    font-size: var(--size-18);
}

.form-group {
    margin-bottom: var(--space-md);
}

.form-group button {
    margin-right: var(--space-sm);
}

.form-group button:last-child {
    margin-right: 0;
}

.button-group {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-sm);
}

.button-group .button {
    min-width: 100px;
}

.button-group .button.copied {
    background: var(--green-010);
    color: var(--green-080);
}

/* ============================
   RESULTAAT TABELLEN
   ============================ */
.results-container {
    /* margin: var(--space-xl) 0 0 0; */
    width: 100%;
    overflow-x: auto;
}

.results-container:focus-visible {
    outline: 2px solid var(--theme-060);
    outline-offset: 2px;
}

.wp-block-table {
    margin: 0;
    width: 100%;
}

.results-container th {
    min-width: 200px;
}

.url-input {
    padding: var(--space-xs) var(--space-sm);
    border: 1px solid var(--grey-030);
    background-color: var(--grey-010);
    font-family: monospace;
    font-size: var(--size-16);
    color: var(--grey-090);
}

/* ============================
   ISSUES LIST - Consistente styling voor alle checkers
   ============================

   GEBRUIK:
   Deze styles worden gebruikt door ALLE checkers om
   toegankelijkheidsproblemen weer te geven.

   HTML STRUCTUUR:
   <ul class="issues-list">
       <li class="issue-item fail">WCAG fout</li>
       <li class="issue-item warning">Waarschuwing</li>
       <li class="issue-item info">Informatie</li>
       <li class="issue-item pass">Geen problemen</li>
   </ul>

   KLEUR CODERING:
   - fail (rood)    - WCAG overtreding → MOET worden opgelost
   - warning (oranje) - Potentieel probleem → Check handmatig
   - info (blauw)   - Informatief → Geen actie nodig
   - pass (groen)   - Geslaagd → Goed gedaan!
*/
.issues-list {
    list-style: none;
    padding: 0;
    margin: var(--space-md) 0;
    font-size: var(--size-14);
}

.issue-item {
    padding: var(--space-sm) var(--space-md);
    margin-bottom: var(--space-xs);
    border-radius: var(--radius-sm);
    border-left: 4px solid; /* Dikke linker border als visuele indicator */
    background-color: var(--grey-010);
    font-size: var(--size-16);
    line-height: 1.5;
}

/* Status-specifieke styling met design tokens
   Kleuren voldoen aan WCAG AA contrast requirements (4.5:1) */
.issue-item.fail {
    border-left-color: var(--red-070);
    background-color: var(--red-020);
    color: var(--red-070);
}

.issue-item.warning {
    border-left-color: var(--yellow-070);
    background-color: var(--yellow-020);
    color: var(--yellow-070);
}

.issue-item.info {
    border-left-color: var(--blue-070);
    background-color: var(--blue-020);
    color: var(--blue-070);
}

.issue-item.pass {
    border-left-color: var(--green-070);
    background-color: var(--green-020);
    color: var(--green-070);
}

.fail {
    color: var(--red-070);
}
.warning {
    color: var(--yellow-070);
}
.info {
    color: var(--blue-070);
}
.pass {
    color: var(--green-070);
}

/* Nested issues (voor structure-checker) */
.issue-details {
    list-style: none;
    padding-left: var(--space-lg);
    margin-top: var(--space-sm);
}

.issue-details li {
    padding: var(--space-xs) 0;
    position: relative;
}

.issue-details li::before {
    content: "•";
    position: absolute;
    left: calc(var(--space-md) * -1);
    color: inherit;
}

/* Code binnen issues */
.issue-item code {
    background-color: rgba(0, 0, 0, 0.05);
    padding: 0.1em 0.3em;
    border-radius: var(--radius-sm);
    font-size: 0.9em;
}

/* ============================
   IMAGE CHECKER STYLES
   ============================ */
.image-thumbnail {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 60px;
}

.image-thumbnail img {
    display: block;
    max-width: 100px;
    max-height: 60px;
    width: auto;
    height: auto;
    object-fit: contain;
    border: 1px solid var(--grey-030);
    background: var(--grey-010);
}

.image-thumbnail svg {
    max-width: 100px;
    max-height: 60px;
    width: auto;
    height: auto;
}

/* ============================
   STRUCTURE CHECKER STYLES
   ============================ */
.structure-results {
    margin: var(--space-xl) 0;
    padding: var(--space-lg);
    background: var(--grey-010);
    border: 1px solid var(--grey-030);
    border-radius: var(--radius-sm);
}

.structure-results:focus-visible {
    outline: 2px solid var(--theme-060);
    outline-offset: 2px;
}

.heading-outline-list {
    margin: var(--space-md) 0;
}

.heading-outline-list ul,
.landmark-outline-list ul {
    margin-left: var(--space-lg);
}

.structure-outline h4 {
    margin-top: 0;
}

/* Overgeslagen heading niveau - waarschuwing styling */
.skipped-heading-warning {
    display: inline-block;
    background-color: var(--yellow-020, #fffbea);
    border-left: 3px solid var(--yellow-070, #f59e0b);
    padding: var(--space-xs) var(--space-sm);
    margin: var(--space-xs) 0;
    border-radius: var(--radius-sm);
    font-weight: 600;
}

.skipped-heading-warning em {
    color: var(--yellow-070, #f59e0b);
    font-style: normal;
    font-weight: 500;
}

.skipped-heading-warning .warning-icon {
    color: var(--yellow-070, #f59e0b);
    font-weight: bold;
    margin-right: var(--space-xs);
}

.skipped-heading-warning code {
    background-color: rgba(255, 255, 255, 0.6);
    padding: 0.1em 0.3em;
    border-radius: var(--radius-sm);
    color: var(--yellow-070, #f59e0b);
    font-weight: 600;
}

/* Landmark weergave */
.landmark-summary {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin: var(--space-md) 0;
}

.landmark-group-compact {
    background: var(--grey-010);
    border-left: 3px solid var(--theme-060);
    padding: var(--space-sm) var(--space-md);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    transition: all var(--transition-fast);
}

.landmark-group-compact:hover {
    background: var(--grey-020);
    border-left-width: 4px;
    padding-left: calc(var(--space-md) - 1px);
}

.landmark-group-compact h5 {
    margin: 0 0 var(--space-xs) 0;
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: var(--size-16);
}

.landmark-role {
    font-weight: bold;
}

.landmark-count {
    font-weight: normal;
    font-size: 0.9em;
}

/* Issue groepering */
.grouped-issues-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin: var(--space-md) 0;
}

.issue-group {
    background: var(--grey-010);
    border-left: 4px solid var(--grey-050);
    padding: var(--space-sm) var(--space-md);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    transition: all var(--transition-fast);
}

.issue-group:hover {
    transform: translateX(2px);
}

.issue-group.fail {
    background: var(--red-010);
    border-color: var(--red-060);
}

.issue-group.warning {
    background: var(--orange-010);
    border-color: var(--orange-050);
}

.issue-group.info {
    background: var(--blue-010);
    border-color: var(--blue-060);
}

.issue-summary {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-weight: 500;
    line-height: 1.4;
}

.issue-icon {
    font-size: 1.2em;
    flex-shrink: 0;
}

.wcag-ref {
    font-size: 0.85em;
    color: var(--grey-060);
    font-weight: normal;
    background: rgba(0,0,0,0.05);
    padding: 1px 6px;
    border-radius: var(--radius-sm);
    margin-left: var(--space-xs);
}

.issue-details {
    margin: var(--space-xs) 0 0 1.75rem;
    padding: 0;
    list-style: none;
    font-size: 0.9em;
    color: var(--grey-070);
}

.issue-details li {
    padding: var(--space-2xs) 0;
    position: relative;
}

.issue-details li:before {
    content: "→ ";
    color: var(--grey-050);
    position: absolute;
    left: -1rem;
}

/* ============================
   CONTRAST CHECKER STYLES
   ============================ */
.text-sample {
    border: 1px solid var(--grey-030);
}

.input-group {
    padding: 0 0 var(--space-sm) 0;
}

.contrast-ratio,
.contrast-ratio-value {
    display: inline-block;
    padding: var(--space-md);
}

.contrast-ratio-value {
    font-size: var(--responsive-h3);
    font-weight: bold;
}

.color-preview {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-sm);
    margin: var(--space-sm) 0;
    border: 1px solid var(--grey-030);
}

.color-input-group {
    display: flex;
    gap: var(--space-sm);
    align-items: center;
    flex-wrap: wrap;
}

.color-input-group label {
    flex: 1 1 100%;
    margin-bottom: var(--space-xs);
}

.color-input-group input[type="text"] {
    flex: 1 1 200px;
    min-width: 0;
    font-family: monospace;
    font-size: var(--size-18);
    color:var(--basic-black);
}

.color-input-group input[type="color"] {
    width: 40px;
    height: 40px;
    padding: 0;
    border: 1px solid var(--grey-030);
    border-radius: var(--radius-sm);
    cursor: pointer;
    flex: 0 0 40px;
}

.contrast-inputs {
    display: flex;
    gap: var(--space-xl);
    flex-wrap: wrap;
}

.example-container {
    padding: var(--space-xl) 0 0 0;
}

fieldset {
    flex: 1 1 300px;
    min-width: 0;
}

.luminance-display {
    display: none;
}

/* ============================
   CODE CHECKER STYLES - Details/Summary
   Aanvullend op WordPress block styles
   ============================ */

/* Voeg dikke border-left toe voor status indicatie */
.code-results .wp-block-details {
    border-left-width: 4px;
}

/* Fail styling - Rode kleur */
.code-results .wp-block-details.fail {
    border-color: var(--red-020);
    background-color: var(--red-010);
    border-left-color: var(--red-070);
}

.code-results .wp-block-details.fail summary {
    color: var(--red-070);
}

/* Warning styling - Gele kleur */
.code-results .wp-block-details.warning {
    border-color: var(--yellow-020);
    background-color: var(--yellow-010);
    border-left-color: var(--orange-070);
}

.code-results .wp-block-details.warning summary {
    color: var(--orange-070);
}

/* Info styling - Blauwe kleur */
.code-results .wp-block-details.info {
    border-color: var(--blue-020);
    background-color: var(--blue-010);
    border-left-color: var(--blue-070);
}

.code-results .wp-block-details.info summary {
    color: var(--blue-070);
}

/* Pass styling - Groene kleur */
.code-results .wp-block-details.pass {
    border-color: var(--green-020);
    background-color: var(--green-010);
    border-left-color: var(--green-070);
}

.code-results .wp-block-details.pass summary {
    color: var(--green-070);
}

/* Issue count in summary */
.code-results .issue-count {
    background: rgba(0, 0, 0, 0.15);
    padding: var(--space-2xs) var(--space-sm);
    border-radius: var(--radius-lg);
    font-size: var(--size-14);
    margin-left: var(--space-xs);
    font-weight: 600;
    display: inline-block;
    line-height: 1.2;
}

/* Referentieregel (COD/STR/ACT + WCAG) bovenaan details-inhoud */
.code-results .check-reference {
    margin: 0 0 var(--space-sm) 0;
    padding: var(--space-xs) var(--space-md);
    font-size: var(--size-14);
    opacity: 0.8;
}

/* Code blocks list - Aanvullend op WordPress list styles */
.code-results .code-blocks {
    padding: var(--space-md);
    margin: 0;
}

.code-results .code-blocks li {
    margin-bottom: var(--space-sm);
}

.code-results .code-blocks li:last-child {
    margin-bottom: 0;
}

/* Code block styling - Custom styling voor code context */
.code-results .code-context {
    background: var(--basic-white);
    border: 1px solid var(--grey-030);
    border-radius: var(--radius-sm);
    padding: var(--space-sm);
    overflow-x: auto;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: var(--size-14);
    line-height: 1.5;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.05);
}

/* Override WordPress code block styles binnen code-context */
.code-results .code-context code {
    display: block;
    white-space: pre-wrap;
    word-break: break-word;
    background: transparent;
    padding: 0;
    margin: 0;
    color: var(--grey-090);
    font-family: inherit;
    font-size: inherit;
    line-height: inherit;
}

/* Highlight problematisch element */
.code-results .code-context mark {
    background: rgba(255, 0, 0, 0.2);
    padding: var(--space-2xs) var(--space-xs);
    border-radius: 2px;
    font-weight: 600;
}

/* WCAG link in summary */
.code-results .wcag-link {
    font-size: var(--size-14);
    margin-left: var(--space-xs);
    text-decoration: none;
    opacity: 0.8;
    transition: opacity var(--transition-fast);
}

.code-results .wcag-link:hover {
    opacity: 1;
    text-decoration: underline;
}

/* Focus states voor toegankelijkheid */
.code-results .wp-block-details summary:focus-visible {
    outline: 2px solid var(--theme-060);
    outline-offset: 2px;
}

/* Animatie voor open/close */
.code-results .wp-block-details[open] > *:not(summary) {
    animation: slideDown var(--transition-base);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Code checker headers */
.code-checker-header:first-child {
    margin-top: 0;
}


/* ============================
   MOBIELE OPTIMALISATIES
   ============================ */
@media (max-width: 481px) {
    .contrast-inputs {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .shortcode fieldset {
        flex: initial;
    }
    
    .shortcode .input-group {
        max-width: 100%;
        padding: 0 var(--space-md);
    }
}

@media screen and (max-width: 768px) {
    .results-container {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .results-container table {
        min-width: 800px;
    }
    
    .wp-block-table th,
    .wp-block-table td {
        padding: var(--space-sm);
    }
    
    /* Basis inspringing voor eerste niveau */
    .heading-outline-list,
    .landmark-outline-list {
        padding-left: var(--space-sm);
    }

    /* Progressieve inspringing voor geneste niveaus */
    .heading-outline-list ul,
    .landmark-outline-list ul {
        padding-left: var(--space-sm); /* Niveau 2 */
    }

    .heading-outline-list ul ul,
    .landmark-outline-list ul ul {
        padding-left: 10px; /* Niveau 3 */
    }

    .heading-outline-list ul ul ul,
    .landmark-outline-list ul ul ul,
    .heading-outline-list ul ul ul ul,
    .landmark-outline-list ul ul ul ul,
    .heading-outline-list ul ul ul ul ul,
    .landmark-outline-list ul ul ul ul ul {
        padding-left: 8px; /* Niveau 4 en dieper */
    }

    /* Kleinere font-size voor diepere niveaus om ruimte te besparen */
    .heading-outline-list ul ul ul,
    .landmark-outline-list ul ul ul {
        padding-left: 6px;
    }
    
    /* Compactere regelhoogte op mobiel */
    .heading-outline-list,
    .landmark-outline-list {
        line-height: 1.5;
    }
    
    /* Minder marge tussen items */
    .heading-outline-list li,
    .landmark-outline-list > li {
        margin: 0.125rem 0;
    }
}

/* Voor zeer kleine schermen (onder 480px) */
@media (max-width: 480px) {
    /* Nog compactere inspringing */
    .heading-outline-list,
    .landmark-outline-list {
        padding-left: 8px;
    }
    
    .heading-outline-list ul,
    .landmark-outline-list ul {
        padding-left: 8px; /* Niveau 2 */
    }
    
    .heading-outline-list ul ul,
    .landmark-outline-list ul ul {
        padding-left: 6px; /* Niveau 3 */
    }
    
    .heading-outline-list ul ul ul,
    .landmark-outline-list ul ul ul,
    .heading-outline-list ul ul ul ul,
    .landmark-outline-list ul ul ul ul,
    .heading-outline-list ul ul ul ul ul,
    .landmark-outline-list ul ul ul ul ul {
        padding-left: 4px; /* Niveau 4 en dieper */
    }
}

/* ============================
   CODE CHECKER SUCCESS MESSAGE
   ============================ */

/* Success Message Block - Direct zichtbaar zonder details/summary */
.wp-block-success-message {
    background: var(--green-020);
    border: 1px solid var(--green-030);
    border-left: 4px solid var(--green-060);
    padding: var(--space-md) var(--space-xl);
    margin: var(--space-sm) 0;
    border-radius: var(--radius-sm);
}

.wp-block-success-message.pass {
    color: var(--green-080);
}

.wp-block-success-message p {
    margin: 0;
    font-size: var(--size-14);
    line-height: 1.5;
}

.wp-block-success-message code {
    background: rgba(255, 255, 255, 0.5);
    padding: var(--space-2xs) var(--space-xs);
    border-radius: var(--radius-sm);
    font-size: var(--size-14);
}

/* Aanpassing voor code-result-group container */
.code-result-group {
    width: 100%;
}

.code-result-group .wp-block-success-message {
    margin-bottom: var(--space-md);
}

/* Als er een success message boven details staat */
.code-result-group .wp-block-success-message + .wp-block-details {
    margin-top: 0;
}

/* Legacy support voor oude class naam */
.code-result-success {
    margin: var(--space-xl) 0;
    padding: var(--space-md) var(--space-xl);
    background: var(--green-010);
    border: 1px solid var(--green-030);
    border-radius: var(--radius-sm);
    border-left: 4px solid var(--green-070);
}

.code-result-success .success-message {
    color: var(--green-070);
    font-size: var(--size-16);
    font-weight: 500;
    margin: 0;
    line-height: 1.5;
}

.code-result-success .success-message code {
    background: rgba(255,255,255,0.5);
    padding: var(--space-2xs) var(--space-sm);
    border-radius: var(--radius-sm);
    color: var(--green-070);
    font-size: 0.9em;
}