:root {
    --viewer-max: 1100px;
}

/* Lock scroll: only lock html and don't change its height, otherwise the page jumps to the top */
html.no-scroll {
    overflow: hidden;
}

/* Viewer */
.viewer {
    position: fixed;
    inset: 0;
    z-index: 3000;
    display: none;
}

.viewer.is-open {
    display: block;
}

.viewer-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.82);
    backdrop-filter: blur(2px);
}

.viewer-dialog {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 18px;
}

.viewer-stage {
    width: 100%;
    display: grid;
    place-items: center;
}

.viewer-media {
    width: auto;
    height: auto;
    max-width: min(var(--viewer-max), calc(100vw - 36px));
    max-height: calc(100vh - 170px);
    object-fit: contain;
    display: block;
    border-radius: 14px;
    box-shadow: 0 18px 45px rgba(0, 0, 0, 0.35);
}

/* Loading state: blurred preview image, spinner only after a delay, error with "Erneut versuchen" */
.viewer-image {
    position: relative;
    display: grid;
    place-items: center;
    width: min(var(--viewer-max), calc(100vw - 36px), calc(100vh - 170px));
    aspect-ratio: 1;
    border-radius: 14px;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.04);
}

.viewer-placeholder {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: blur(14px) brightness(0.85);
    transform: scale(1.08);
}

.viewer-spinner {
    position: relative;
    width: 46px;
    height: 46px;
    border-radius: 999px;
    border: 4px solid rgba(255, 255, 255, 0.25);
    border-top-color: #fff;
    opacity: 0;
    transition: opacity 0.2s ease;
    animation: viewer-spin 0.9s linear infinite;
}

.viewer-image.show-spinner .viewer-spinner {
    opacity: 1;
}

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

.viewer-error {
    position: relative;
    display: grid;
    justify-items: center;
    gap: 10px;
    padding: 20px;
    color: #fff;
    text-align: center;
    background: rgba(0, 0, 0, 0.55);
    border-radius: 14px;
}

.viewer-error .bi {
    font-size: 30px;
}

.viewer-error p {
    margin: 0;
}

.viewer-retry {
    border: 0;
    border-radius: 999px;
    padding: 10px 18px;
    background: #fff;
    color: #111;
    font: inherit;
    font-weight: 600;
    cursor: pointer;
}

.viewer-media.is-fresh {
    animation: viewer-fade 0.25s ease;
}

@keyframes viewer-fade {
    from {
        opacity: 0;
    }
}

@media (prefers-reduced-motion: reduce) {
    .viewer-media.is-fresh {
        animation: none;
    }

    .viewer-spinner {
        animation-duration: 2.4s;
    }
}

.viewer-embed {
    width: min(var(--viewer-max), calc(100vw - 36px));
    aspect-ratio: 16 / 9;
    max-height: calc(100vh - 170px);
    border-radius: 14px;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.04);
    box-shadow: 0 18px 45px rgba(0, 0, 0, 0.35);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.viewer-embed iframe {
    width: 100%;
    height: 100%;
    border: 0;
    display: block;
}

.viewer-caption {
    width: min(var(--viewer-max), calc(100vw - 36px));
    color: rgba(255, 255, 255, 0.92);
    text-align: center;
    padding: 0 10px;
    line-height: 1.5;
    font-size: 14px;
}

.viewer-close,
.viewer-nav {
    transition: background 0.18s ease, filter 0.18s ease;
    transform: none !important;
    display: grid;
    place-items: center;
    line-height: 1;
    border: 0;
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
}

.viewer-close:hover,
.viewer-nav:hover {
    filter: brightness(1.1);
}

.viewer-close:active,
.viewer-nav:active {
    filter: brightness(1.15);
}

.viewer-close {
    position: absolute;
    top: 14px;
    right: 14px;
    width: 52px;
    height: 52px;
    border-radius: 999px;
    font-size: 18px;
}

.viewer-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%) !important;
    width: 70px;
    height: 70px;
    border-radius: 999px;
    font-size: 44px;
}

.viewer-prev {
    left: 16px;
}

.viewer-next {
    right: 16px;
}

/* Trigger */
.viewer-wrap {
    position: relative;
}

.is-viewer-trigger {
    cursor: zoom-in;
}

.is-viewer-trigger:focus-visible {
    outline: 3px solid color-mix(in srgb, var(--accent) 65%, #fff);
    outline-offset: 4px;
    border-radius: 12px;
}

.viewer-open-btn {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 44px;
    height: 44px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.28);
    background: rgba(0, 0, 0, 0.45);
    color: #fff;
    display: grid;
    place-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.18s ease, transform 0.18s ease, filter 0.18s ease;
    transform: translateY(-2px);
}

.viewer-wrap:hover .viewer-open-btn,
.viewer-wrap:focus-within .viewer-open-btn {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

@media (hover: none) {
    .viewer-open-btn {
        opacity: 1;
        pointer-events: auto;
        transform: none;
    }
}

.viewer-open-btn:hover {
    filter: brightness(1.12);
}

.viewer-open-btn:active {
    filter: brightness(1.18);
}

@media (max-width: 640px) {
    .viewer-dialog {
        padding: 12px;
    }

    .viewer-media {
        max-width: calc(100vw - 24px);
        max-height: calc(100vh - 150px);
        border-radius: 12px;
    }

    .viewer-image {
        width: min(calc(100vw - 24px), calc(100vh - 150px));
        border-radius: 12px;
    }

    .viewer-embed {
        width: calc(100vw - 24px);
        max-height: calc(100vh - 150px);
        border-radius: 12px;
    }

    .viewer-prev,
    .viewer-next {
        display: none;
    }
}