/*
 * Image viewer: one way to look closely at any picture on the site.
 * See Frontend/image-viewer.ts. Colours come from the shared surface tokens, so the
 * viewer is a calm sheet of the page itself in light mode and in dark.
 */

/* ---- In the page: a picture invites a closer look ---------------------------------- */
img[data-lwc-viewable] {
    cursor: zoom-in;
    transition:
        scale var(--lwc-duration-normal, 220ms) var(--lwc-ease, ease),
        box-shadow var(--lwc-duration-normal, 220ms) var(--lwc-ease, ease);
}

img[data-lwc-viewable]:focus-visible {
    outline: 2px solid var(--lwc-accent, #087685);
    outline-offset: 3px;
}

/* While the picture is out in the viewer, its place in the page stays reserved. */
img[data-lwc-view-away] {
    opacity: 0;
    transition: none;
}

/* Document plates gain a corner chip that says "this opens", with no words. */
.documentation-document p:has(> img[data-lwc-viewable]) {
    position: relative;
    transition: border-color var(--lwc-duration-normal, 220ms) var(--lwc-ease, ease);
}

.documentation-document p:has(> img[data-lwc-viewable])::before,
.documentation-document p:has(> img[data-lwc-viewable])::after {
    content: "";
    position: absolute;
    top: 0.65rem;
    right: 0.65rem;
    width: 2.125rem;
    height: 2.125rem;
    z-index: 1;
    border-radius: var(--lwc-radius-pill, 999px);
    pointer-events: none;
    opacity: 0;
    translate: 0 -3px;
    scale: 0.92;
    transition:
        opacity var(--lwc-duration-normal, 220ms) var(--lwc-ease, ease),
        translate var(--lwc-duration-normal, 220ms) var(--lwc-ease, ease),
        scale var(--lwc-duration-normal, 220ms) var(--lwc-ease, ease);
}

.documentation-document p:has(> img[data-lwc-viewable])::before {
    background: var(--lwc-surface, #fff);
    border: 1px solid var(--lwc-border, #d7e0e6);
    box-shadow: var(--lwc-shadow-sm, 0 1px 2px rgba(15, 23, 42, 0.08));
    box-sizing: border-box;
}

.documentation-document p:has(> img[data-lwc-viewable])::after {
    background: var(--lwc-ink, #17212b);
    -webkit-mask: var(--lwc-viewer-expand) center / 1rem no-repeat;
    mask: var(--lwc-viewer-expand) center / 1rem no-repeat;
}

:root {
    --lwc-viewer-expand: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M14 4h6v6M10 20H4v-6M20 4l-6.5 6.5M4 20l6.5-6.5'/%3E%3C/svg%3E");
}

@media (hover: hover) {
    .documentation-document p:has(> img[data-lwc-viewable]):hover {
        border-color: var(--lwc-border-strong, #71808d);
    }
    .documentation-document p:has(> img[data-lwc-viewable]):hover > img {
        scale: 1.012;
        box-shadow: var(--lwc-shadow-md, 0 10px 28px rgba(15, 23, 42, 0.1));
    }
    img.qr-code-img[data-lwc-viewable]:hover {
        scale: 1.04;
    }
}

.documentation-document p:has(> img[data-lwc-viewable]):is(:hover, :focus-within)::before,
.documentation-document p:has(> img[data-lwc-viewable]):is(:hover, :focus-within)::after {
    opacity: 1;
    translate: 0 0;
    scale: 1;
}

/* Touch screens have no hover, so the chip simply rests in the corner. */
@media (hover: none) {
    .documentation-document p:has(> img[data-lwc-viewable])::before,
    .documentation-document p:has(> img[data-lwc-viewable])::after {
        opacity: 0.94;
        translate: 0 0;
        scale: 0.88;
    }
}

/* ---- The viewer --------------------------------------------------------------------- */
.lwc-viewer {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    max-width: none;
    max-height: none;
    margin: 0;
    padding: 0;
    border: 0;
    overflow: hidden;
    background: transparent;
    color: var(--lwc-ink, #17212b);
    overscroll-behavior: contain;
}

.lwc-viewer::backdrop {
    background: transparent;
}

.lwc-viewer-scrim {
    position: absolute;
    inset: 0;
    background: color-mix(in srgb, var(--lwc-canvas, #f3f5f7) 92%, transparent);
    -webkit-backdrop-filter: blur(10px) saturate(0.85);
    backdrop-filter: blur(10px) saturate(0.85);
}

.lwc-viewer-stage {
    position: absolute;
    inset: 72px clamp(12px, 7vw, 96px) 80px;
    overflow: hidden;
    touch-action: none;
    user-select: none;
    -webkit-user-select: none;
}

.lwc-viewer-picture {
    position: absolute;
    max-width: none;
    max-height: none;
    margin: 0;
    transform-origin: 50% 50%;
    border-radius: var(--lwc-radius-md, 8px);
    background: var(--lwc-surface, #fff);
    box-shadow:
        0 1px 2px rgba(15, 23, 42, 0.10),
        0 28px 64px -12px rgba(15, 23, 42, 0.28);
    cursor: zoom-in;
    -webkit-user-drag: none;
    will-change: transform;
}

.lwc-viewer[data-zoomed] .lwc-viewer-picture {
    cursor: grab;
    border-radius: 0;
}

.lwc-viewer[data-dragging] .lwc-viewer-picture {
    cursor: grabbing;
}

/* Round controls in the site's bordered-secondary language. */
.lwc-viewer-button {
    display: grid;
    place-items: center;
    width: 48px;
    height: 48px;
    flex: 0 0 48px;
    padding: 0;
    border: 1px solid var(--lwc-border, #d7e0e6);
    border-radius: var(--lwc-radius-pill, 999px);
    background: var(--lwc-surface, #fff);
    color: var(--lwc-ink, #17212b);
    box-shadow: var(--lwc-shadow-sm, 0 1px 2px rgba(15, 23, 42, 0.08));
    cursor: pointer;
    touch-action: manipulation;
    transition:
        opacity 180ms var(--lwc-ease, ease),
        scale 180ms var(--lwc-ease, ease),
        translate 260ms cubic-bezier(0.16, 1, 0.3, 1),
        border-color var(--lwc-duration-fast, 140ms) var(--lwc-ease, ease),
        color var(--lwc-duration-fast, 140ms) var(--lwc-ease, ease);
}

.lwc-viewer-button svg {
    width: 1.25rem;
    height: 1.25rem;
    fill: none;
    stroke: currentColor;
    stroke-width: 2.2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.lwc-viewer-button:hover:not(:disabled) {
    border-color: var(--lwc-accent, #087685);
    color: var(--lwc-accent, #087685);
}

.lwc-viewer-button:active:not(:disabled) {
    border-color: var(--lwc-accent, #087685);
    background: color-mix(in srgb, var(--lwc-surface, #fff) 90%, var(--lwc-accent, #087685));
}

.lwc-viewer-button:focus-visible {
    outline: 2px solid var(--lwc-accent, #087685);
    outline-offset: 3px;
}

.lwc-viewer-button:disabled {
    opacity: 0.38;
    cursor: default;
}

.lwc-viewer-close {
    position: absolute;
    top: max(1rem, env(safe-area-inset-top));
    right: max(1rem, env(safe-area-inset-right));
}

.lwc-viewer-toolbar {
    position: absolute;
    bottom: max(12px, env(safe-area-inset-bottom));
    left: 50%;
    translate: -50% 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: safe center;
    gap: 6px;
    width: max-content;
    max-width: calc(100% - 16px);
}

.lwc-viewer:not([data-many]) :is(.lwc-viewer-nav, .lwc-viewer-dots) {
    display: none;
}

.lwc-viewer-zoom-controls {
    display: flex;
    border: 1px solid var(--lwc-border, #d7e0e6);
    border-radius: var(--lwc-radius-pill, 999px);
    background: var(--lwc-surface, #fff);
}
.lwc-viewer-zoom-controls .lwc-viewer-button {
    border: 0;
    box-shadow: none;
}

/* Position: a row of dots with the current one stretched into an accent pill. */
.lwc-viewer-dots {
    position: absolute;
    left: 50%;
    top: 24px;
    display: flex;
    gap: 6px;
    align-items: center;
    padding: 8px 10px;
    border: 1px solid var(--lwc-border, #d7e0e6);
    border-radius: var(--lwc-radius-pill, 999px);
    background: var(--lwc-surface, #fff);
    box-shadow: var(--lwc-shadow-sm, 0 1px 2px rgba(15, 23, 42, 0.08));
    translate: -50% 0;
    transition: opacity 180ms var(--lwc-ease, ease), translate 260ms cubic-bezier(0.16, 1, 0.3, 1);
    pointer-events: none;
}

.lwc-viewer-position, .lwc-viewer-zoom-status {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
}

.lwc-viewer-feedback {
    position: absolute;
    top: 72px;
    bottom: 130px;
    left: 16px;
    right: 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: safe center;
    gap: 12px;
    overflow: auto;
    text-align: center;
    font: inherit;
}
.lwc-viewer-feedback[hidden], .lwc-viewer-retry[hidden] { display: none; }
.lwc-viewer-load-message { margin: .5em 0 0; }
.lwc-viewer-retry {
    flex: 0 0 auto;
    min-width: 48px;
    min-height: 48px;
    border: 1px solid var(--lwc-border, #d7e0e6);
    border-radius: var(--lwc-radius-md, 8px);
    background: var(--lwc-surface, #fff);
    color: var(--lwc-ink, #17212b);
    padding: .5em 1em;
    font: inherit;
    cursor: pointer;
}
.lwc-viewer-retry:focus-visible, .lwc-viewer-stage:focus-visible {
    outline: 2px solid var(--lwc-accent, #087685);
    outline-offset: 2px;
}

.lwc-viewer-dots > span {
    width: 6px;
    height: 6px;
    border-radius: var(--lwc-radius-pill, 999px);
    background: var(--lwc-border-strong, #71808d);
    opacity: 0.55;
    transition:
        width 280ms cubic-bezier(0.16, 1, 0.3, 1),
        background-color 200ms var(--lwc-ease, ease),
        opacity 200ms var(--lwc-ease, ease);
}

.lwc-viewer-dots > span[data-current] {
    width: 20px;
    background: var(--lwc-accent, #087685);
    opacity: 1;
}

/* Controls step aside during the return flight or a drag. */
.lwc-viewer:is([data-state="closing"], [data-dragging]) :is(.lwc-viewer-toolbar, .lwc-viewer-dots) {
    opacity: 0;
    pointer-events: none;
}

.lwc-viewer[data-state="opening"] .lwc-viewer-close {
    translate: 0 -6px;
}

.lwc-viewer[data-state="opening"] .lwc-viewer-nav[data-step="-1"] {
    translate: -8px 0;
}

.lwc-viewer[data-state="opening"] .lwc-viewer-nav[data-step="1"] {
    translate: 8px 0;
}

.lwc-viewer[data-state="opening"] .lwc-viewer-dots {
    translate: -50% 8px;
}

.lwc-viewer[data-state="open"] :is(.lwc-viewer-button, .lwc-viewer-dots) {
    transition-delay: 40ms;
}

@media (max-width: 340px) {
    .lwc-viewer-dots { left: 16px; translate: 0 0; gap: 3px; padding-inline: 6px; }
    .lwc-viewer-close { right: 8px; top: 12px; }
}
@media (max-width: 260px) {
    .lwc-viewer-dots { display: none; }
    .lwc-viewer-toolbar { display: grid; grid-template-columns: repeat(3, 48px); }
    .lwc-viewer-zoom-controls { grid-column: 1 / -1; grid-row: 1; }
    .lwc-viewer-prev { grid-column: 1; grid-row: 2; }
    .lwc-viewer-next { grid-column: 3; grid-row: 2; }
}
@media (max-width: 180px) {
    .lwc-viewer-toolbar { grid-template-columns: 48px 44px 48px; gap: 6px 0; }
    .lwc-viewer-zoom-controls .lwc-viewer-button { width: 46px; flex-basis: 46px; }
}

@media (prefers-color-scheme: dark) {
    .lwc-viewer-scrim {
        background: color-mix(in srgb, var(--lwc-canvas, #0d141b) 94%, transparent);
    }
    .lwc-viewer-picture {
        box-shadow:
            0 0 0 1px var(--lwc-border, #42515e),
            0 28px 64px -12px rgba(0, 0, 0, 0.6);
    }
}

@media (prefers-reduced-motion: reduce) {
    img[data-lwc-viewable],
    .lwc-viewer-button,
    .lwc-viewer-dots,
    .lwc-viewer-dots > span,
    .documentation-document p:has(> img[data-lwc-viewable])::before,
    .documentation-document p:has(> img[data-lwc-viewable])::after {
        transition: none;
    }
}

@media print {
    .documentation-document p:has(> img[data-lwc-viewable])::before,
    .documentation-document p:has(> img[data-lwc-viewable])::after {
        display: none;
    }
}