/**
 * ReaderTextView - CSS Styles
 *
 * Basis-Styles für die ReaderTextView Web-Komponente
 */

/* === Import Google Font (ABeeZee) === */
@import url('https://fonts.googleapis.com/css2?family=ABeeZee:ital@0;1&display=swap');

/* === CSS Custom Properties (Theme) === */
/* Diese Variablen ergänzen die globalen Variablen aus styles.css */
:root {
    --rtv-font-family: 'ABeZehEDU', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --rtv-font-size: 24px;
    --rtv-line-height: 1.6;
    --rtv-text-color: var(--color-text-primary, #1a1a1a);
    --rtv-bg-color: var(--color-surface-raised, #fafafa);
    --rtv-highlight-color: #fde047;
    --rtv-overlay-border-color: #facc15;
    --rtv-overlay-bg-color: rgba(250, 204, 21, 0.1);
    --rtv-explanation-bg: rgba(239, 68, 68, 0.1);
    --rtv-explanation-border: var(--color-accent-red, #ef4444);
    --rtv-padding: 30px;
    --rtv-border-radius: var(--radius-md, 8px);
    --rtv-syllable-color-1: var(--color-accent-red, #dc2626);
    --rtv-syllable-color-2: #2c6693;
}

/* Dark Theme */
@media (prefers-color-scheme: dark) {
    :root {
        --rtv-text-color: #e5e5e5;
        --rtv-bg-color: var(--color-surface, #1f1f1f);
        --rtv-highlight-color: #ca8a04;
        --rtv-overlay-border-color: #eab308;
        --rtv-overlay-bg-color: rgba(234, 179, 8, 0.15);
    }
}

/* === Container === */
.reader-text-view-container {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
    border-radius: 0;
}

/* === Text View === */
.reader-text-view {
    width: 100%;
    height: 100%;
    overflow-y: auto;
    overflow-x: hidden;
    padding: var(--rtv-padding);
    box-sizing: border-box;
    font-family: var(--rtv-font-family);
    font-size: var(--rtv-font-size);
    line-height: var(--rtv-line-height);
    color: var(--rtv-text-color);
    background-color: var(--rtv-bg-color);
    outline: none;
    cursor: text;
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
    position: relative;
}

/* iOS-App: Im Lese-/Erkunden-Modus das native Auswahl-/Callout-Menü beim Longpress
   (Kopieren, Nachschlagen, Übersetzen …) unterdrücken – es überlagert sonst die Worterklärung.
   Die Worterklärung läuft über einen eigenen JS-Longpress-Timer (touchstart), der von
   user-select/touch-callout NICHT beeinflusst wird; Touch-Gesten/Scrollen bleiben erhalten.
   Bewusst nur in der nativen App (body.native-app) und nur im Lesemodus (.reader-mode). */
body.native-app .reader-mode .reader-text-view,
body.native-app .reader-mode .reader-text-view * {
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    user-select: none;
}


/* Scrollbar Styling */
.reader-text-view::-webkit-scrollbar {
    width: 8px;
}

.reader-text-view::-webkit-scrollbar-track {
    background: transparent;
}

.reader-text-view::-webkit-scrollbar-thumb {
    background-color: rgba(0, 0, 0, 0.2);
    border-radius: 4px;
}

.reader-text-view::-webkit-scrollbar-thumb:hover {
    background-color: rgba(0, 0, 0, 0.3);
}

/* Placeholder */
.reader-text-view.has-placeholder::before {
    content: attr(data-placeholder);
    color: #9ca3af;
    pointer-events: none;
    position: absolute;
    top: var(--rtv-padding);
    left: var(--rtv-padding);
    right: var(--rtv-padding);
}

/* Paragraphen und Textformatierung */
.reader-text-view p {
    margin: 0 0 1.5em 0;
}

.reader-text-view strong {
    font-weight: 700;
}

/* Aufzählungslisten */
.reader-text-view ul {
    margin: 0 0 1em 0;
    padding-left: 1.5em;
}

.reader-text-view li {
    margin-bottom: 0.5em;
}

/* === Modus-Anzeige === */
.reader-text-view-container.edit-mode .reader-text-view {
    cursor: text;
}

.reader-text-view-container.reader-mode .reader-text-view {
    cursor: default;
}

/* Visuelle Unterscheidung der Modi */
.reader-text-view-container.edit-mode {
    border: 2px solid transparent;
}

.reader-text-view-container.reader-mode {
    border: 2px solid var(--rtv-overlay-border-color);
}

/* === Wort-Overlay === */
.reader-word-overlay {
    position: absolute;
    border: 2px solid var(--rtv-overlay-border-color);
    border-radius: 5px;
    background-color: var(--rtv-overlay-bg-color);
    pointer-events: none;
    transition: all 0.15s ease-out;
    z-index: 10;
}

/* Overlay für Worterklärungen */
.reader-word-overlay.explanation {
    border-color: var(--rtv-explanation-border);
    background-color: var(--rtv-explanation-bg);
}

/* === Erklärungs-Popup === */
.reader-explanation-popup {
    position: absolute;
    max-width: 80%;
    padding: 15px 20px;
    background-color: rgba(255, 255, 255, 0.98);
    border-radius: 12px;
    box-shadow: 0 4px 25px rgba(0, 0, 0, 0.15);
    font-size: 18px;
    line-height: 1.5;
    z-index: 100;
    animation: popup-appear 0.2s ease-out;
}

@media (prefers-color-scheme: dark) {
    .reader-explanation-popup {
        background-color: rgba(40, 40, 40, 0.98);
        color: #e5e5e5;
    }
}

@keyframes popup-appear {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

.reader-explanation-close {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 24px;
    height: 24px;
    border: none;
    background: transparent;
    font-size: 20px;
    color: #9ca3af;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.15s ease;
}

.reader-explanation-close:hover {
    background-color: rgba(0, 0, 0, 0.1);
    color: #4b5563;
}

/* === Erklärungs-Popup: Bild/Emoji === */
.reader-explanation-body {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    padding-right: 20px; /* Platz für den Close-Button */
}

.reader-explanation-content {
    flex: 1 1 auto;
}

.reader-explanation-visual {
    flex: 0 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.reader-explanation-image {
    width: 72px;
    height: 72px;
    object-fit: contain;
}

.reader-explanation-emoji {
    font-size: 48px;
    line-height: 1;
}

.reader-explanation-attribution {
    font-size: 11px;
    color: #9ca3af;
    margin-top: 4px;
    text-align: center;
}

.reader-explanation-translation {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px solid #e5e7eb;
}

.reader-explanation-translation-label {
    font-size: 20px;
    line-height: 1;
}

.reader-explanation-translation-text {
    font-weight: 600;
    color: #1e3a8a;
}

.reader-explanation-translation-speak {
    border: none;
    background: transparent;
    font-size: 18px;
    cursor: pointer;
    padding: 2px 6px;
    border-radius: 6px;
}

.reader-explanation-translation-speak:hover {
    background: #eff6ff;
}

/* === Silbentrennung Farben === */
.reader-text-view .syllable-1 {
    color: var(--rtv-syllable-color-1);
}

.reader-text-view .syllable-2 {
    color: var(--rtv-syllable-color-2);
}

/* === Loading Indicator === */
.reader-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    border: 3px solid #e5e7eb;
    border-top-color: #2c6693;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* === Responsive Anpassungen === */
@media screen and (max-width: 768px) {
    :root {
        --rtv-font-size: 20px;
        --rtv-padding: 20px;
    }
}

@media screen and (max-width: 480px) {
    :root {
        --rtv-font-size: 18px;
        --rtv-padding: 15px;
    }
}

/* === Print Styles === */
@media print {
    .reader-text-view-container {
        box-shadow: none;
    }

    .reader-word-overlay,
    .reader-explanation-popup,
    .reader-loading {
        display: none !important;
    }

    .reader-text-view {
        overflow: visible;
        height: auto;
    }
}

/* === Floating Read Buttons === */
.reader-floating-buttons {
    position: absolute;
    top: 10px;
    right: 10px;
    display: flex;
    flex-direction: row;
    gap: 8px;
    z-index: 50;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease-out;
}

.reader-text-view-container.reader-mode .reader-floating-buttons {
    opacity: 0.5;
    pointer-events: auto;
}

.reader-text-view-container.reader-mode .reader-floating-buttons:hover {
    opacity: 1;
}

.reader-floating-buttons.scrolled {
    position: fixed;
    opacity: 0.4;
}

.reader-floating-buttons.scrolled:hover {
    opacity: 1;
}

.reader-floating-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 8px 12px;
    border: none;
    border-radius: 12px;
    background-color: rgba(44, 102, 147, 0.6);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    transition: all 0.15s ease;
    min-width: 60px;
}

.reader-floating-btn:hover {
    transform: scale(1.05);
    background-color: rgba(44, 102, 147, 0.9);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.reader-floating-btn:active {
    transform: scale(0.98);
}

.reader-floating-btn img {
    width: 36px;
    height: 36px;
    object-fit: contain;
}

.reader-floating-btn span {
    font-size: 10px;
    font-family: var(--rtv-font-family);
    color: white;
    text-align: center;
}

.reader-floating-btn.stop-btn {
    display: none;
}

.reader-floating-btn.stop-btn.visible {
    display: flex;
}

.reader-floating-btn.read-btn.reading {
    background-color: rgba(44, 102, 147, 0.95);
}

.reader-floating-btn.read-btn.reading span {
    color: white;
}

@media (prefers-color-scheme: dark) {
    .reader-floating-btn {
        background-color: rgba(44, 102, 147, 0.6);
    }

    .reader-floating-btn:hover {
        background-color: rgba(44, 102, 147, 0.9);
    }

    .reader-floating-btn.read-btn.reading {
        background-color: rgba(44, 102, 147, 0.95);
    }
}

/* === Accessibility === */
@media (prefers-reduced-motion: reduce) {
    .reader-word-overlay,
    .reader-explanation-popup {
        transition: none;
        animation: none;
    }

    .reader-text-view {
        scroll-behavior: auto;
    }

    .reader-floating-btn {
        transition: none;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --rtv-overlay-border-color: #000;
        --rtv-highlight-color: #ffff00;
    }

    .reader-word-overlay {
        border-width: 3px;
    }
}

/* === Toolbar (optional) === */
.reader-toolbar {
    display: flex;
    gap: 10px;
    padding: 10px;
    background-color: #f3f4f6;
    border-bottom: 1px solid #e5e7eb;
    flex-wrap: wrap;
}

@media (prefers-color-scheme: dark) {
    .reader-toolbar {
        background-color: #2d2d2d;
        border-color: #404040;
    }
}

.reader-toolbar button {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: none;
    border-radius: 6px;
    background-color: #2c6693;
    color: white;
    font-family: var(--rtv-font-family);
    font-size: 14px;
    cursor: pointer;
    transition: background-color 0.15s ease;
}

.reader-toolbar button:hover {
    background-color: #1e4b6e;
}

.reader-toolbar button:active {
    background-color: #1d4ed8;
}

.reader-toolbar button:disabled {
    background-color: #9ca3af;
    cursor: not-allowed;
}

.reader-toolbar button.secondary {
    background-color: #6b7280;
}

.reader-toolbar button.secondary:hover {
    background-color: #4b5563;
}

.reader-toolbar button.danger {
    background-color: #ef4444;
}

.reader-toolbar button.danger:hover {
    background-color: #dc2626;
}

/* Font Size Controls */
.reader-toolbar .font-size-control {
    display: flex;
    align-items: center;
    gap: 8px;
}

.reader-toolbar .font-size-control input[type="range"] {
    width: 100px;
}

.reader-toolbar .font-size-control span {
    min-width: 40px;
    text-align: center;
    font-size: 14px;
    color: var(--rtv-text-color);
}

/* === Inline Grafik-Bloecke (Tabellen, Diagramme, Bildbeschreibungen) === */
.reader-graphic-block {
    margin: 20px 0;
    border-radius: 12px;
    overflow: hidden;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    user-select: none;
    -webkit-user-select: none;
}

@media (prefers-color-scheme: dark) {
    .reader-graphic-block {
        background: #1e293b;
        border-color: #334155;
    }
}

.reader-graphic-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 15px;
    font-size: 14px;
    font-weight: 600;
    color: white;
}

.reader-chart-block .reader-graphic-header {
    background: linear-gradient(135deg, #10b981, #059669);
}

.reader-description-block .reader-graphic-header {
    background: linear-gradient(135deg, #8b5cf6, #7c3aed);
}

.reader-graphic-icon {
    font-size: 18px;
}

.reader-graphic-content {
    padding: 15px;
    margin: 0;
    font-family: 'SF Mono', 'Consolas', 'Monaco', monospace;
    font-size: 14px;
    line-height: 1.5;
    white-space: pre;
    overflow-x: auto;
    color: #1e293b;
    background: transparent;
}

@media (prefers-color-scheme: dark) {
    .reader-graphic-content {
        color: #e2e8f0;
    }
}

.reader-description-content {
    font-family: var(--rtv-font-family);
    white-space: normal;
    font-size: 16px;
}

/* Responsive Anpassung fuer kleine Bildschirme */
@media screen and (max-width: 480px) {
    .reader-graphic-content {
        font-size: 12px;
        padding: 12px;
    }

    .reader-graphic-header {
        padding: 8px 12px;
        font-size: 13px;
    }
}

/* === ASCII-Tabellen im Lesemodus: kindgerechte HTML-Tabelle statt roher ASCII ===
   Rendering: reader-text-view.js (_refreshGraphicTablesForMode). Im Bearbeiten-Modus
   bleibt die Tabelle als ASCII in <pre class="reader-graphic-content"> (siehe oben).
   Bewusst KEIN prefers-color-scheme:dark-Block — App-Basis ist immer hell. */
.reader-graphic-content.reader-ascii-table-wrapper {
    padding: 0;
    margin: 0;
    font-family: var(--rtv-font-family);
    font-size: inherit;
    white-space: normal;
    overflow-x: auto;
    /* explizit hell (nicht transparent): der Karten-Block hat einen Alt-Dark-Mode-Override,
       der sonst bei OS-Dark durch die transparenten Zebra-Reihen durchscheint */
    background: #ffffff;
}

.reader-ascii-table {
    min-width: 100%;
    border-collapse: collapse;
    font-size: inherit;
    color: #1e293b;
}

.reader-ascii-table th,
.reader-ascii-table td {
    padding: 14px 16px;
    text-align: left;
    white-space: normal;
    hyphens: none;
    -webkit-hyphens: none;
    -ms-hyphens: none;
    border-bottom: 1px solid #e2e8f0;
}

.reader-ascii-table thead th {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    color: #ffffff;
    font-weight: 600;
    border-bottom: none;
}

.reader-ascii-table tbody tr:nth-child(even) {
    background: #eff6ff;
}

.reader-ascii-table tbody tr:last-child td {
    border-bottom: none;
}

@media screen and (max-width: 480px) {
    .reader-ascii-table th,
    .reader-ascii-table td {
        padding: 10px 12px;
    }
}

/* === Wortbilder (ARASAAC) === */
.reader-text-view.word-image-mode {
    padding-top: 40px;
}

.reader-text-view .word {
    position: relative;
    display: inline;
}

/* Wort-Wrapper im Bildmodus: inline-block mit Mindesthoehe fuer Bilder */
.reader-text-view.word-image-mode .word {
    display: inline-block;
    vertical-align: bottom;
    margin-top: 2.5em;
}

.reader-text-view .word-image {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    height: 2em;
    width: auto;
    max-width: 3.5em;
    object-fit: contain;
    pointer-events: none;
    margin-bottom: 2px;
}

/* Bilder im Bearbeiten-Modus ausblenden */
.edit-mode .reader-text-view .word-image {
    display: none;
}

.edit-mode .reader-text-view.word-image-mode {
    padding-top: 0;
}

.edit-mode .reader-text-view.word-image-mode .word {
    display: inline;
    margin-top: 0;
}

.reader-text-view .word-image.loading {
    opacity: 0.3;
}

.reader-text-view .word-image.error {
    display: none;
}