:root {
    --a11y-font-scale: 100%;
}

html {
    font-size: var(--a11y-font-scale);
}

/* Schwebende Aktionstaste (FAB) */
[data-a11y-fab] {
    position: fixed;
    inset: auto 1rem 1rem auto;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: #4D58FF;
    color: #fff;
    cursor: pointer;
    box-shadow: 0 0.375rem 1.125rem rgba(0, 0, 0, 0.2);
    z-index: 10000;
    user-select: none;
    transition-duration: 0.3s;
}
[data-a11y-fab]:hover {
    background-color: rgba(77, 88, 255, 0.9);
    transition-duration: 0.3s;
}

[data-a11y-fab]:focus-visible {
    outline: 0.1875rem solid #ffd54f;
    outline-offset: 0.1875rem;
}

/* Icon im FAB (falls SVG verwendet wird) */
[data-a11y-fab] svg {
    width: 1.5rem;
    height: 1.5rem;
}

/* Seitenpanel */
[data-a11y-panel] {
    position: fixed;
    top: 0;
    right: 0;
    width: 380px;
    max-width: 100%;
    height: 100dvh;

    transform: translateX(100%);
    transition: transform 0.25s ease;

    background: #fff;
    color: #2b3136;

    box-shadow: -1rem 0 2.5rem rgba(0, 0, 0, 0.18);

    z-index: 10001;

    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

body.dark-mode [data-a11y-panel] {
    background: #2b3136;
    color: #fefefe;
}

[data-a11y-panel][aria-hidden="false"] {
    transform: translateX(0);
}

.a11y-panel__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.125rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

body.dark-mode .a11y-panel__header {
    border-color: rgba(255, 255, 255, 0.12);
}

.a11y-panel__title {
    font-size: 1.1rem;
    font-weight: 700;
}

.a11y-panel__content {
    padding: 0.75rem 1.125rem 1.25rem;
    overflow: auto;
}

.a11y-section {
    margin: 0.625rem 0 0.875rem;
}

.a11y-section h3, .a11y-section .h3 {
    margin: 0 0 0.5rem;
    font-size: 0.95rem;
    font-weight: 700;
}

/* Buttons (Spans) */
.a11y-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    width: fit-content;
    padding: 0.5rem 0.75rem;
    border-radius: 0.75rem;
    border: 1px solid rgba(0, 0, 0, 0.15);
    cursor: pointer;
    user-select: none;
}

body.dark-mode .a11y-btn {
    border-color: rgba(255, 255, 255, 0.2);
}

.a11y-btn[aria-pressed=true] {
    outline: 0.125rem solid #4D58FF;
    outline-offset: 0.125rem;
}

.a11y-btn:focus-visible {
    outline: 0.1875rem solid #ffd54f;
    outline-offset: 0.1875rem;
}

.a11y-btn-group {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* Toggles (als Switches) — stabil bei langen Texten */
.a11y-toggle {
    /* Grid verhindert das Schrumpfen des Schalters; Text bekommt die restliche Breite */
    display: grid;
    grid-template-columns: auto 1fr;
    /* 1) Schalter, 2) Text */
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    padding: 0.5rem 0.75rem;
    border-radius: 0.75rem;
    border: 1px solid rgba(0, 0, 0, 0.15);
    max-inline-size: 100%;
}

body.dark-mode .a11y-toggle {
    border-color: rgba(255, 255, 255, 0.2);
}

.a11y-toggle input {
    appearance: none;
    inline-size: 2.75rem;
    /* feste Breite */
    block-size: 1.625rem;
    /* feste Höhe */
    border-radius: 999px;
    background: #bbb;
    position: relative;
    outline: none;
    transition: background 0.2s;
    flex: none;
    /* falls irgendwo Flex greift */
}

.a11y-toggle input::after {
    content: "";
    position: absolute;
    top: 0.3125rem;
    left: 0.3125rem;
    inline-size: 1rem;
    block-size: 1rem;
    border-radius: 50%;
    background: #fff;
    transition: transform 0.2s;
}

.a11y-toggle input:checked {
    background: #4D58FF;
}

.a11y-toggle input:checked::after {
    /* 44 - 26 = 18 → Weg des Knopfes */
    transform: translateX(1.125rem);
}

.a11y-toggle span {
    min-inline-size: 0;
    /* erlaubt Umbruch */
    white-space: normal;
    overflow-wrap: anywhere;
    /* bricht sehr lange Wörter */
}

/* ---- Effekte auf der Seite ---- */
/* Sans-serif */
body.a11y-sans {
    font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, "Noto Sans", "Helvetica Neue", Arial, sans-serif !important;
}

/* Links hervorheben */
body.a11y-highlight-links a {
    text-decoration: underline !important;
    text-underline-offset: 0.125rem;
    font-weight: 700;
    outline-offset: 0.125rem;
}

body.a11y-highlight-links a:focus-visible {
    outline: 0.1875rem solid #ffd54f !important;
}

/* Lesemodus (ohne ablenkende Elemente) */
body.a11y-reader-mode img,
body.a11y-reader-mode picture,
body.a11y-reader-mode video,
body.a11y-reader-mode canvas,
body.a11y-reader-mode iframe,
body.a11y-reader-mode [data-decorative],
body.a11y-reader-mode [aria-hidden=true] {
    display: none !important;
}

body.a11y-reader-mode * {
    animation: none !important;
    transition: none !important;
}

body.a11y-reader-mode [style*=background-image] {
    background-image: none !important;
}

/* Backdrop zum Schließen bei Klick außerhalb */
[data-a11y-backdrop] {
    position: fixed;
    inset: 0;
    backdrop-filter: blur(0);
    /* 0 genügt; px nicht nötig */
    background: rgba(0, 0, 0, 0);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
    z-index: 10000;
}

[data-a11y-backdrop][data-open=true] {
    opacity: 0.25;
    background: rgba(0, 0, 0, 0.5);
    pointer-events: auto;
}

/* The End */