/* ==========================================================================
   360°-Zylinder-Slider
   ========================================================================== */

.c-cylinder-slider {
    --c-cylinder-slider-height-desktop: 525px;
    --c-cylinder-slider-height-mobile: 375px;
    --c-cylinder-slide-width-desktop: 650px;
    --c-cylinder-slide-width-mobile: 350px;
    --c-cylinder-perspective: 1200px;
    --c-cylinder-default-text-color: #fff;
    --c-cylinder-default-background-color: #dddddd;
    --c-cylinder-arrow-color: #ddd;
    --c-cylinder-arrow-background-color: transparent;
    --c-cylinder-border-radius: 0;
    --c-cylinder-animation-duration: 600ms;
    position: relative;
    max-width: 100%;
    margin: 2rem auto;
    color: var(--c-cylinder-default-text-color);
}

.c-cylinder-slider__headline,
.c-cylinder-slider__subheadline {
    max-width: 760px;
    margin-right: auto;
    margin-left: auto;
    color: #222;
    text-align: center;
}

.c-cylinder-slider__headline {
    margin-bottom: 0.5rem;
}

.c-cylinder-slider__subheadline {
    margin-bottom: 1.5rem;
    opacity: 0.82;
}

/* ----- Stage / Viewport / Scene / Ring ----- */

.c-cylinder-slider__stage {
    position: relative;
    min-height: var(--c-cylinder-slider-height-mobile);
    padding: 0 3rem;
}

.c-cylinder-slider__viewport {
    position: relative;
    min-height: var(--c-cylinder-slider-height-mobile);
    overflow-x: auto;
    overflow-y: hidden;
}

.c-cylinder-slider__scene {
    position: relative;
    min-height: var(--c-cylinder-slider-height-mobile);
}

.c-cylinder-slider__ring {
    display: flex;
    gap: 1rem;
    min-height: var(--c-cylinder-slider-height-mobile);
}

/* ----- Slide (no-JS / pre-init) ----- */

.c-cylinder-slider__slide {
    position: relative;
    flex: 0 0 min(100%, var(--c-cylinder-slide-width-mobile));
    min-height: var(--c-cylinder-slider-height-mobile);
    overflow: hidden;
    border-radius: var(--c-cylinder-border-radius);
    background: var(--c-cylinder-slide-background, var(--c-cylinder-default-background-color));
    color: var(--c-cylinder-slide-text, var(--c-cylinder-default-text-color));
}

/* ----- Slide media / image / overlay ----- */

.c-cylinder-slider__media,
.c-cylinder-slider__media::after,
.c-cylinder-slider__image {
    position: absolute;
    inset: 0;
}

.c-cylinder-slider__media::after {
    content: '';
    background: rgba(0, 0, 0, var(--c-cylinder-slide-overlay, 0.35));
}

.c-cylinder-slider__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ----- Card / Content / Link ----- */

.c-cylinder-slider__card {
    position: relative;
    z-index: 1;
    display: flex;
    width: 100%;
    height: 100%;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    color: inherit;
    text-align: center;
}

.c-cylinder-slider__content {
    position: relative;
    z-index: 1;
    pointer-events: none;
}

.c-cylinder-slider__card-link {
    position: absolute;
    inset: 0;
    z-index: 2;
    display: block;
    color: inherit !important;
    text-decoration: none !important;
}

.c-cylinder-slider__visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
    border: 0;
}

/* ----- Typografie ----- */

.c-cylinder-slider__title {
    margin: 0;
    font-size: clamp(2.5rem, 6.25vw, 4.4rem);
    font-weight: 700;
    line-height: 1.05;
}

.c-cylinder-slider__subtitle {
    margin: 0.9rem 0 0;
    font-size: clamp(1.5rem, 3.125vw, 2.1rem);
    font-weight: 600;
}

.c-cylinder-slider__description {
    max-width: 42rem;
    margin: 1.4rem auto 0;
    font-size: 1.45rem;
    line-height: 1.45;
}

.c-cylinder-slider__link-label {
    display: inline-block;
    margin-top: 1.75rem;
    font-size: 1.4rem;
    font-weight: 700;
}

/* ----- Pfeile ----- */

.c-cylinder-slider__nav {
    position: absolute;
    top: 50%;
    z-index: 10;
    display: inline-flex;
    width: 2.75rem;
    height: 2.75rem;
    align-items: center;
    justify-content: center;
    border: 0;
    border-radius: 0;
    background: var(--c-cylinder-arrow-background-color);
    color: var(--c-cylinder-arrow-color);
    font-size: 3rem;
    font-weight: 300;
    line-height: 1;
    transform: translateY(-50%);
    cursor: pointer;
}

.c-cylinder-slider__nav--prev { left: 0; }
.c-cylinder-slider__nav--next { right: 0; }

.c-cylinder-slider__nav:focus-visible,
.c-cylinder-slider__card-link:focus-visible {
    outline: 3px solid currentColor;
    outline-offset: 4px;
}

/* ==========================================================================
   3D-Pipeline (aktiv erst nach JS-Init)
   ========================================================================== */

.c-cylinder-slider.is-initialized .c-cylinder-slider__viewport {
    height: var(--c-cylinder-slider-height-mobile);
    overflow: hidden;
    perspective: var(--c-cylinder-perspective);
    perspective-origin: 50% 50%;
}

.c-cylinder-slider.is-initialized .c-cylinder-slider__scene,
.c-cylinder-slider.is-initialized .c-cylinder-slider__ring {
    position: absolute;
    inset: 0;
    min-height: 0;
    transform-style: preserve-3d;
}

.c-cylinder-slider.is-initialized .c-cylinder-slider__ring {
    display: block;
}

.c-cylinder-slider.is-initialized .c-cylinder-slider__slide {
    position: absolute;
    top: 50%;
    left: 50%;
    width: min(92vw, var(--c-cylinder-slide-width-mobile));
    min-height: auto;
    height: calc(var(--c-cylinder-slider-height-mobile) - 1rem);
    will-change: transform;
    /* Wechsel auf sichtbar = sofort. Wechsel auf hidden hat Delay,
       siehe .is-hidden — Kachel bleibt während der Drehung sichtbar */
    transition: visibility 0s linear 0s;
}

.c-cylinder-slider.is-initialized .c-cylinder-slider__slide.is-hidden {
    visibility: hidden;
    pointer-events: none;
    transition: visibility 0s linear var(--c-cylinder-animation-duration, 600ms);
}

/* ----- Static Fallback (< 2 Slides) ----- */

.c-cylinder-slider.is-static .c-cylinder-slider__nav,
.c-cylinder-slider:not(.has-arrows) .c-cylinder-slider__nav {
    display: none;
}

/* ----- Desktop ----- */

@media (min-width: 768px) {
    .c-cylinder-slider__stage,
    .c-cylinder-slider__viewport,
    .c-cylinder-slider__scene,
    .c-cylinder-slider__ring {
        min-height: var(--c-cylinder-slider-height-desktop);
    }

    .c-cylinder-slider.is-initialized .c-cylinder-slider__viewport {
        height: var(--c-cylinder-slider-height-desktop);
    }

    .c-cylinder-slider.is-initialized .c-cylinder-slider__slide {
        width: min(80vw, var(--c-cylinder-slide-width-desktop));
        height: calc(var(--c-cylinder-slider-height-desktop) - 1rem);
    }
}

/* ----- Reduced motion ----- */

@media (prefers-reduced-motion: reduce) {
    .c-cylinder-slider {
        --c-cylinder-animation-duration: 0ms;
    }
}