/* Gradients guide: matplotlib plot on its own row, then renders in one strip */
.guide-figure-stack {
    margin: 1.25rem 0 2rem 0;
    width: 100%;
}

.guide-figure-plot {
    margin-bottom: 1.25rem;
    width: 100%;
}

.guide-figure-plot img {
    display: block;
    width: 100%;
    max-width: min(960px, 100%);
    height: auto;
    margin: 0 auto;
}

.guide-figure-renders {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem 1.25rem;
    align-items: start;
    width: 100%;
}

/* Legacy: single grid (e.g. getting-started) */
.guide-figure-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem 1.25rem;
    margin: 1.25rem 0 2rem 0;
    width: 100%;
}

.guide-figure-cell {
    min-width: 0;
}

.guide-figure-cell img {
    width: 100%;
    height: auto;
    vertical-align: middle;
}

.guide-figure-label {
    font-weight: 600;
    margin: 0 0 0.4rem 0;
    font-size: 0.92rem;
}

.guide-figure-stack .guide-figure-label {
    font-weight: 600;
    margin: 0 0 0.4rem 0;
    font-size: 0.92rem;
}

.guide-figure-renders .guide-figure-label {
    font-weight: 600;
    margin: 0 0 0.4rem 0;
    font-size: 0.92rem;
}

.guide-figure-cell .guide-figure-label {
    font-weight: 600;
    margin: 0 0 0.4rem 0;
    font-size: 0.92rem;
}

.guide-figure-cell > p:not(.guide-figure-label) {
    font-size: 0.88rem;
    margin: 0 0 0.5rem 0;
    line-height: 1.35;
}

/* Gallery before/after image comparison */
.openvcad-gallery {
    margin: 1.25rem 0 3rem 0;
}

.openvcad-comparison {
    --openvcad-comparison-position: 50%;
    --openvcad-comparison-aspect-ratio: 5425 / 3256;
    --openvcad-comparison-max-width: 1080px;
    width: 100%;
    max-width: var(--openvcad-comparison-max-width);
    margin: 1.25rem auto 2.5rem auto;
}

.openvcad-comparison figcaption {
    margin: 0 0 0.75rem 0;
    font-size: 1.25rem;
    font-weight: 650;
    line-height: 1.3;
}

.openvcad-comparison-frame {
    position: relative;
    width: 100%;
    aspect-ratio: var(--openvcad-comparison-aspect-ratio);
    overflow: hidden;
    border-radius: 6px;
    background: #111;
}

.openvcad-comparison-frame:focus-within {
    outline: 2px solid #2980b9;
    outline-offset: 3px;
}

.openvcad-comparison-image {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: none !important;
    user-select: none;
    pointer-events: none;
}

.openvcad-comparison-image-before {
    position: absolute;
    inset: 0;
    clip-path: inset(0 calc(100% - var(--openvcad-comparison-position)) 0 0);
}

.openvcad-comparison-label {
    position: absolute;
    top: 0.75rem;
    z-index: 4;
    max-width: calc(50% - 1rem);
    padding: 0.35rem 0.55rem;
    border-radius: 4px;
    background: rgba(0, 0, 0, 0.68);
    color: #fff;
    font-size: 0.85rem;
    font-weight: 650;
    line-height: 1.2;
    pointer-events: none;
}

.openvcad-comparison-label-before {
    left: 0.75rem;
}

.openvcad-comparison-label-after {
    right: 0.75rem;
    text-align: right;
}

.openvcad-comparison-control {
    position: absolute;
    inset: 0;
    z-index: 6;
    width: 100%;
    height: 100%;
    margin: 0;
    opacity: 0;
    cursor: ew-resize;
    touch-action: pan-y;
}

.openvcad-comparison-divider {
    position: absolute;
    top: 0;
    bottom: 0;
    left: var(--openvcad-comparison-position);
    z-index: 5;
    width: 2px;
    transform: translateX(-50%);
    background: rgba(255, 255, 255, 0.92);
    box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.22);
    pointer-events: none;
}

.openvcad-comparison-handle {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 2.5rem;
    height: 2.5rem;
    transform: translate(-50%, -50%);
    border: 2px solid #fff;
    border-radius: 50%;
    background: rgba(22, 28, 32, 0.78);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.28);
}

.openvcad-comparison-handle::before,
.openvcad-comparison-handle::after {
    content: "";
    position: absolute;
    top: 50%;
    width: 0.45rem;
    height: 0.45rem;
    border-top: 2px solid #fff;
    border-left: 2px solid #fff;
}

.openvcad-comparison-handle::before {
    left: 0.72rem;
    transform: translateY(-50%) rotate(-45deg);
}

.openvcad-comparison-handle::after {
    right: 0.72rem;
    transform: translateY(-50%) rotate(135deg);
}

@media (max-width: 640px) {
    .openvcad-comparison figcaption {
        font-size: 1.05rem;
    }

    .openvcad-comparison-label {
        top: 0.5rem;
        max-width: calc(50% - 0.75rem);
        padding: 0.3rem 0.45rem;
        font-size: 0.72rem;
    }

    .openvcad-comparison-label-before {
        left: 0.5rem;
    }

    .openvcad-comparison-label-after {
        right: 0.5rem;
    }

    .openvcad-comparison-handle {
        width: 2rem;
        height: 2rem;
    }

    .openvcad-comparison-handle::before,
    .openvcad-comparison-handle::after {
        width: 0.34rem;
        height: 0.34rem;
    }

    .openvcad-comparison-handle::before {
        left: 0.54rem;
    }

    .openvcad-comparison-handle::after {
        right: 0.54rem;
    }
}

/* Click-to-enlarge (see openvcad_lightbox.js); PyData main column is #main-content */
#main-content img {
    cursor: zoom-in;
}

#main-content img[data-no-lightbox] {
    cursor: default;
}

.openvcad-lightbox-overlay {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem 3rem;
    box-sizing: border-box;
    background: rgba(0, 0, 0, 0.88);
}

.openvcad-lightbox-inner {
    position: relative;
    max-width: 96vw;
    max-height: 92vh;
    margin: auto;
    /* Opaque backing for PNGs with transparency (no page/overlay bleed-through). */
    background: #fff;
}

.openvcad-lightbox-image {
    display: block;
    max-width: 96vw;
    max-height: 92vh;
    width: auto;
    height: auto;
    margin: 0 auto;
    object-fit: contain;
    background-color: #fff;
}

.openvcad-lightbox-close {
    position: fixed;
    top: 0.75rem;
    right: 1rem;
    z-index: 10001;
    width: 2.5rem;
    height: 2.5rem;
    padding: 0;
    border: none;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
    font-size: 1.75rem;
    line-height: 1;
    cursor: pointer;
}

.openvcad-lightbox-close:hover,
.openvcad-lightbox-close:focus {
    background: rgba(255, 255, 255, 0.22);
    outline: 2px solid #2980b9;
}