/**
 * VoiceReader.css - Text-to-Speech Styling
 * =========================================
 * Barrierefreie Text-zu-Sprache Funktion
 *
 * Styling fuer Vorlese-Funktion mit visueller
 * Hervorhebung des aktuell vorgelesenen Textes.
 *
 * Features:
 * - Vorlese-Button Styling
 * - Highlight fuer aktuell vorgelesenen Text
 * - Play/Pause/Stop Controls
 * - Fortschrittsanzeige
 * - Geschwindigkeitssteuerung
 *
 * @version 1.0.0
 * @since TYPO3 13 LTS
 * @author made in nature Projektagentur
 */

/* ==========================================================================
   CSS Custom Properties (Design Tokens)
   ========================================================================== */

:root {
    /* Button Farben */
    --min-voice-button-bg: #f5f5f5;
    --min-voice-button-color: #1a1a1a;
    --min-voice-button-hover-bg: #e5e5e5;
    --min-voice-button-active-bg: var(--min-color-primary, #2563eb);
    --min-voice-button-active-color: #ffffff;
    --min-voice-button-border: #d4d4d4;

    /* Highlight Farben */
    --min-voice-highlight-bg: #fef08a;
    --min-voice-highlight-color: #1a1a1a;
    --min-voice-highlight-shadow: 0 0 0 3px rgba(254, 240, 138, 0.5);

    /* Alternative Highlight (Dark Mode) */
    --min-voice-highlight-bg-dark: #854d0e;
    --min-voice-highlight-color-dark: #ffffff;

    /* Progress Bar */
    --min-voice-progress-bg: #e5e5e5;
    --min-voice-progress-fill: var(--min-color-primary, #2563eb);
    --min-voice-progress-height: 4px;

    /* Controls Panel */
    --min-voice-panel-bg: #ffffff;
    --min-voice-panel-border: #e5e5e5;
    --min-voice-panel-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);

    /* Button Dimensionen */
    --min-voice-button-size: 48px;
    --min-voice-button-radius: 50%;
    --min-voice-icon-size: 24px;

    /* Transition */
    --min-voice-transition: background-color 150ms ease, color 150ms ease, transform 100ms ease;

    /* Focus */
    --min-voice-focus-color: var(--min-focus-color, #005fcc);
    --min-voice-focus-width: 3px;
}

/* ==========================================================================
   Inline Vorlese-Button (neben Text)
   ========================================================================== */

.min-voice-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: var(--min-voice-button-size);
    height: var(--min-voice-button-size);
    padding: 0;

    background-color: var(--min-voice-button-bg);
    color: var(--min-voice-button-color);
    border: 1px solid var(--min-voice-button-border);
    border-radius: var(--min-voice-button-radius);

    cursor: pointer;
    transition: var(--min-voice-transition);
}

.min-voice-button:hover {
    background-color: var(--min-voice-button-hover-bg);
}

.min-voice-button:focus-visible {
    outline: var(--min-voice-focus-width) solid var(--min-voice-focus-color);
    outline-offset: 2px;
}

.min-voice-button:active {
    transform: scale(0.95);
}

/* Icon */
.min-voice-button__icon {
    width: var(--min-voice-icon-size);
    height: var(--min-voice-icon-size);
    fill: currentColor;
}

/* Screen Reader Text */
.min-voice-button__text {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ==========================================================================
   Button Zustaende
   ========================================================================== */

/* Aktiv (wird vorgelesen) */
.min-voice-button.is-playing,
.min-voice-button[aria-pressed="true"] {
    background-color: var(--min-voice-button-active-bg);
    color: var(--min-voice-button-active-color);
    border-color: var(--min-voice-button-active-bg);
}

.min-voice-button.is-playing:hover,
.min-voice-button[aria-pressed="true"]:hover {
    background-color: var(--min-color-primary-hover, #1d4ed8);
}

/* Pausiert */
.min-voice-button.is-paused {
    background-color: var(--min-voice-button-active-bg);
    color: var(--min-voice-button-active-color);
    animation: min-voice-pulse 1.5s ease-in-out infinite;
}

@keyframes min-voice-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* Deaktiviert */
.min-voice-button:disabled,
.min-voice-button[disabled] {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Laden */
.min-voice-button.is-loading {
    position: relative;
}

.min-voice-button.is-loading::after {
    content: "";
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid currentColor;
    border-top-color: transparent;
    border-radius: 50%;
    animation: min-voice-spin 0.8s linear infinite;
}

@keyframes min-voice-spin {
    to { transform: rotate(360deg); }
}

.min-voice-button.is-loading .min-voice-button__icon {
    visibility: hidden;
}

/* ==========================================================================
   Button Varianten
   ========================================================================== */

/* Kleiner Button */
.min-voice-button--small {
    --min-voice-button-size: 36px;
    --min-voice-icon-size: 18px;
}

/* Grosser Button */
.min-voice-button--large {
    --min-voice-button-size: 56px;
    --min-voice-icon-size: 28px;
}

/* Eckiger Button */
.min-voice-button--square {
    --min-voice-button-radius: 8px;
}

/* Mit Text */
.min-voice-button--with-text {
    width: auto;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    gap: 0.5rem;
}

.min-voice-button--with-text .min-voice-button__text {
    position: static;
    width: auto;
    height: auto;
    padding: 0;
    margin: 0;
    overflow: visible;
    clip: auto;
    white-space: nowrap;
}

/* ==========================================================================
   Text-Highlight (aktuell vorgelesener Text)
   ========================================================================== */

/* Hervorgehobener Text-Abschnitt */
.min-voice-highlight,
[data-voice-reading="true"],
.min-voice-current-word {
    background-color: var(--min-voice-highlight-bg);
    color: var(--min-voice-highlight-color);
    box-shadow: var(--min-voice-highlight-shadow);
    border-radius: 2px;
    padding: 0 2px;
    margin: 0 -2px;

    /* Smooth Highlight-Bewegung */
    transition: background-color 100ms ease;
}

/* Aktuelles Wort (wenn Wort-fuer-Wort Hervorhebung) */
.min-voice-current-word {
    font-weight: 600;
}

/* Aktueller Satz */
.min-voice-current-sentence {
    background-color: rgba(254, 240, 138, 0.3);
    display: inline;
    padding: 0.125rem 0;
}

/* Aktueller Absatz */
.min-voice-current-paragraph {
    border-left: 4px solid var(--min-voice-button-active-bg);
    padding-left: 1rem;
    margin-left: -1.25rem;
}

/* ==========================================================================
   Vorlese-Bereich Markierung
   ========================================================================== */

/* Container der vorgelesen wird */
.min-voice-reading-area {
    position: relative;
}

.min-voice-reading-area.is-active {
    outline: 2px dashed var(--min-voice-button-active-bg);
    outline-offset: 8px;
}

/* Vorlese-Indikator am Rand */
.min-voice-reading-area.is-active::before {
    content: "";
    position: absolute;
    left: -24px;
    top: 0;
    width: 4px;
    height: 100%;
    background-color: var(--min-voice-button-active-bg);
    border-radius: 2px;
    animation: min-voice-pulse 1s ease-in-out infinite;
}

/* ==========================================================================
   Controls Panel (Play/Pause/Stop + Optionen)
   ========================================================================== */

.min-voice-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;

    background-color: var(--min-voice-panel-bg);
    border: 1px solid var(--min-voice-panel-border);
    border-radius: 12px;
    box-shadow: var(--min-voice-panel-shadow);
}

/* Floating Controls (fixed position) */
.min-voice-controls--floating {
    position: fixed;
    bottom: 1.5rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 9990;
}

/* Hidden State */
.min-voice-controls[hidden] {
    display: none;
}

/* ==========================================================================
   Control Buttons (Play/Pause/Stop)
   ========================================================================== */

.min-voice-control {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;

    background-color: transparent;
    color: var(--min-voice-button-color);
    border: none;
    border-radius: 50%;

    cursor: pointer;
    transition: var(--min-voice-transition);
}

.min-voice-control:hover {
    background-color: var(--min-voice-button-hover-bg);
}

.min-voice-control:focus-visible {
    outline: var(--min-voice-focus-width) solid var(--min-voice-focus-color);
    outline-offset: 2px;
}

.min-voice-control__icon {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

/* Play Button (hervorgehoben) */
.min-voice-control--play {
    background-color: var(--min-voice-button-active-bg);
    color: var(--min-voice-button-active-color);
}

.min-voice-control--play:hover {
    background-color: var(--min-color-primary-hover, #1d4ed8);
}

/* Icon Wechsel */
.min-voice-control--play .min-voice-control__icon--pause {
    display: none;
}

.min-voice-controls.is-playing .min-voice-control--play .min-voice-control__icon--play {
    display: none;
}

.min-voice-controls.is-playing .min-voice-control--play .min-voice-control__icon--pause {
    display: block;
}

/* ==========================================================================
   Progress Bar
   ========================================================================== */

.min-voice-progress {
    flex: 1;
    min-width: 100px;
    height: var(--min-voice-progress-height);

    background-color: var(--min-voice-progress-bg);
    border-radius: calc(var(--min-voice-progress-height) / 2);
    overflow: hidden;
}

.min-voice-progress__fill {
    height: 100%;
    background-color: var(--min-voice-progress-fill);
    border-radius: inherit;
    transition: width 100ms linear;
}

/* Klickbare Progress Bar */
.min-voice-progress--interactive {
    cursor: pointer;
}

.min-voice-progress--interactive:hover {
    height: calc(var(--min-voice-progress-height) + 4px);
}

/* ==========================================================================
   Geschwindigkeits-Steuerung
   ========================================================================== */

.min-voice-speed {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.min-voice-speed__label {
    font-size: 0.75rem;
    color: var(--min-gray-500, #737373);
    min-width: 2.5rem;
    text-align: center;
}

.min-voice-speed__button {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    padding: 0;

    background-color: transparent;
    border: 1px solid var(--min-voice-panel-border);
    border-radius: 4px;
    color: inherit;

    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: var(--min-voice-transition);
}

.min-voice-speed__button:hover {
    background-color: var(--min-voice-button-hover-bg);
}

.min-voice-speed__button:focus-visible {
    outline: var(--min-voice-focus-width) solid var(--min-voice-focus-color);
    outline-offset: 1px;
}

/* Slider Alternative */
.min-voice-speed__slider {
    width: 80px;
    height: 4px;
    cursor: pointer;
}

/* ==========================================================================
   Stimmen-Auswahl
   ========================================================================== */

.min-voice-select {
    padding: 0.375rem 0.75rem;
    padding-right: 2rem;

    background-color: var(--min-voice-button-bg);
    border: 1px solid var(--min-voice-button-border);
    border-radius: 6px;
    color: inherit;
    font-family: inherit;
    font-size: 0.875rem;

    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23666' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.5rem center;
}

.min-voice-select:focus-visible {
    outline: var(--min-voice-focus-width) solid var(--min-voice-focus-color);
    outline-offset: 2px;
}

/* ==========================================================================
   Dark Mode
   ========================================================================== */

@media (prefers-color-scheme: dark) {
    :root {
        --min-voice-button-bg: #262626;
        --min-voice-button-color: #e5e5e5;
        --min-voice-button-hover-bg: #333333;
        --min-voice-button-border: #404040;

        --min-voice-highlight-bg: var(--min-voice-highlight-bg-dark);
        --min-voice-highlight-color: var(--min-voice-highlight-color-dark);
        --min-voice-highlight-shadow: 0 0 0 3px rgba(133, 77, 14, 0.5);

        --min-voice-panel-bg: #1a1a1a;
        --min-voice-panel-border: #404040;
        --min-voice-panel-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);

        --min-voice-progress-bg: #404040;
    }
}

/* Expliziter Dark Mode */
[data-theme="dark"] .min-voice-button,
[data-theme="dark"] .min-voice-controls,
.dark .min-voice-button,
.dark .min-voice-controls {
    --min-voice-button-bg: #262626;
    --min-voice-button-color: #e5e5e5;
    --min-voice-button-hover-bg: #333333;
    --min-voice-panel-bg: #1a1a1a;
}

/* ==========================================================================
   High Contrast Mode
   ========================================================================== */

[data-contrast="high-contrast-light"] .min-voice-highlight,
[data-contrast="high-contrast-light"] [data-voice-reading="true"] {
    background-color: #000000;
    color: #ffffff;
    outline: 2px solid #000000;
}

[data-contrast="high-contrast-dark"] .min-voice-highlight,
[data-contrast="high-contrast-dark"] [data-voice-reading="true"] {
    background-color: #ffff00;
    color: #000000;
    outline: 2px solid #ffff00;
}

/* ==========================================================================
   Windows High Contrast Mode (Forced Colors)
   ========================================================================== */

@media (forced-colors: active) {
    .min-voice-button,
    .min-voice-control {
        border: 2px solid ButtonText;
        background-color: ButtonFace;
        color: ButtonText;
        forced-color-adjust: none;
    }

    .min-voice-button.is-playing,
    .min-voice-control--play {
        background-color: Highlight;
        border-color: Highlight;
        color: HighlightText;
    }

    .min-voice-highlight,
    [data-voice-reading="true"] {
        background-color: Highlight;
        color: HighlightText;
        forced-color-adjust: none;
    }

    .min-voice-progress {
        background-color: ButtonFace;
        border: 1px solid ButtonText;
    }

    .min-voice-progress__fill {
        background-color: Highlight;
    }
}

/* ==========================================================================
   Reduced Motion
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
    .min-voice-button,
    .min-voice-control,
    .min-voice-highlight,
    .min-voice-progress__fill {
        transition: none;
    }

    .min-voice-button.is-paused,
    .min-voice-reading-area.is-active::before {
        animation: none;
    }

    .min-voice-button.is-loading::after {
        animation: none;
        border-style: dashed;
    }
}

/* ==========================================================================
   Print Styles
   ========================================================================== */

@media print {
    .min-voice-button,
    .min-voice-controls,
    .min-voice-reading-area::before {
        display: none !important;
    }

    .min-voice-highlight,
    [data-voice-reading="true"] {
        background-color: transparent !important;
        box-shadow: none !important;
        color: inherit !important;
    }
}

/* ==========================================================================
   Responsive Anpassungen
   ========================================================================== */

@media (max-width: 640px) {
    .min-voice-controls--floating {
        left: 1rem;
        right: 1rem;
        transform: none;
    }

    .min-voice-controls {
        flex-wrap: wrap;
        justify-content: center;
    }

    .min-voice-progress {
        order: 10;
        width: 100%;
        min-width: auto;
        margin-top: 0.5rem;
    }

    .min-voice-select {
        width: 100%;
        order: 11;
        margin-top: 0.5rem;
    }
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */

/* Vorlese-faehigen Bereich markieren */
.min-voice-readable {
    position: relative;
}

/* Vorlese-Button neben Element positionieren */
.min-voice-readable .min-voice-button {
    position: absolute;
    right: -60px;
    top: 0;
}

/* Text von Vorlesung ausschliessen */
.min-voice-skip {
    /* Via JavaScript uebersprungen */
}

/* Versteckter Text fuer Vorlesung */
.min-voice-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}