/*
 * Trilia device-local background customizer.
 * Feature-specific presentation built exclusively from Design System tokens.
 */

.trilia-site {
    --trilia-background-darken: 18%;
    --trilia-background-blur: 0px;
    position: relative;
    /*
     * Keep the wallpaper in this shell's own stacking context.  A number of
     * native plugin canvases establish their own stacking contexts, so the
     * background must never share their default (zero) layer.
     */
    isolation: isolate;
}

.trilia-background-stage {
    position: fixed;
    /* Always sit behind every page/module canvas, including plugin canvases. */
    z-index: -1;
    top: var(--trilia-header-height);
    right: 0;
    bottom: 0;
    left: 0;
    overflow: hidden;
    background: var(--trilia-color-background);
    opacity: 0;
    pointer-events: none;
    visibility: hidden;
    transition: opacity var(--trilia-duration-medium, 220ms) ease;
}

body.admin-bar .trilia-background-stage {
    top: calc(var(--trilia-header-height) + 32px);
}

.trilia-site[data-trilia-background-active="true"] .trilia-background-stage {
    opacity: 1;
    visibility: visible;
}

/*
 * The selected image replaces only the shell background.  Keeping the shell
 * transparent lets the fixed negative layer remain visible without allowing
 * it to cover content that a plugin renders in its own stacking context.
 */
.trilia-site[data-trilia-background-active="true"] {
    background: transparent;
}

.trilia-background-stage__image,
.trilia-background-stage__shade {
    position: absolute;
    inset: 0;
}

.trilia-background-stage__image {
    inset: -26px;
    background-image: var(--trilia-background-image, none);
    background-position: center center;
    background-repeat: no-repeat;
    background-size: cover;
    filter: blur(var(--trilia-background-blur));
    transform: scale(1.025);
    transform-origin: center;
    will-change: filter;
}

.trilia-background-stage__shade {
    background: rgb(0 0 0 / var(--trilia-background-darken));
}

.trilia-site > .trilia-site-main {
    position: relative;
    z-index: 1;
    isolation: isolate;
}

.trilia-site[data-trilia-background-active="true"] .trilia-site-main,
.trilia-site[data-trilia-background-active="true"] .trilia-site-main--canvas,
.trilia-site[data-trilia-background-active="true"] .trilia-canvas-page {
    background: transparent;
}

body .trilia-site-footer {
    position: relative;
    z-index: 20;
}

.trilia-site-footer__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
}

.trilia-footer-widgets,
.trilia-footer-navigation {
    grid-column: 1 / -1;
}

.trilia-site-footer__legal {
    grid-column: 1;
}

.trilia-site-footer__actions {
    display: flex;
    grid-column: 2;
    align-items: center;
    justify-content: flex-end;
    gap: var(--trilia-space-sm);
    /* The consent control occupies the final circular slot at the far right. */
    padding-right: 48px;
}

.trilia-footer-icon,
.trilia-background-dialog__close {
    display: inline-grid;
    width: 34px;
    height: 34px;
    flex: 0 0 auto;
    place-items: center;
    padding: 0;
    border: 1px solid var(--trilia-color-outline-variant);
    border-radius: var(--trilia-radius-pill);
    background: var(--trilia-color-surface-lowest);
    color: var(--trilia-color-text-muted);
    cursor: pointer;
    transition:
        border-color var(--trilia-duration-fast),
        background-color var(--trilia-duration-fast),
        color var(--trilia-duration-fast),
        transform var(--trilia-duration-fast);
}

.trilia-site[data-trilia-background-active="true"] .trilia-background-trigger {
    border-color: color-mix(in srgb, var(--trilia-color-primary) 46%, var(--trilia-color-outline-variant));
    color: var(--trilia-color-primary);
}

.trilia-footer-icon:hover,
.trilia-footer-icon:focus-visible,
.trilia-background-dialog__close:hover,
.trilia-background-dialog__close:focus-visible {
    border-color: var(--trilia-color-primary);
    color: var(--trilia-color-primary);
}

.trilia-footer-icon:focus-visible,
.trilia-background-dialog__close:focus-visible,
.trilia-background-choice:focus-visible,
.trilia-background-text-action:focus-visible {
    outline: 3px solid color-mix(in srgb, var(--trilia-color-primary) 28%, transparent);
    outline-offset: 2px;
}

.trilia-footer-icon svg,
.trilia-background-dialog__close svg,
.trilia-background-local__preview > svg {
    width: 18px;
    height: 18px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.7;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.trilia-background-dialog {
    width: min(920px, calc(100vw - 32px));
    max-width: 920px;
    max-height: min(88dvh, 900px);
    margin: auto;
    padding: 0;
    overflow: hidden;
    border: 1px solid var(--trilia-color-outline-variant);
    border-radius: var(--trilia-radius-panel);
    background: var(--trilia-color-surface-lowest);
    color: var(--trilia-color-text);
    box-shadow: 0 24px 70px rgb(0 0 0 / 34%);
}

.trilia-background-dialog::backdrop {
    background: rgb(7 13 20 / 58%);
    backdrop-filter: blur(3px);
}

.trilia-background-dialog__surface {
    display: grid;
    max-height: inherit;
    grid-template-rows: auto minmax(0, 1fr) auto;
}

.trilia-background-dialog__header,
.trilia-background-dialog__footer {
    display: flex;
    gap: var(--trilia-space-lg);
    align-items: center;
    justify-content: space-between;
    padding: var(--trilia-space-xl) var(--trilia-space-xxl);
    background: var(--trilia-color-surface-lowest);
}

.trilia-background-dialog__header {
    border-bottom: 1px solid var(--trilia-color-outline-variant);
}

.trilia-background-dialog__header h2,
.trilia-background-section h3,
.trilia-background-section p {
    margin: 0;
}

.trilia-background-dialog__header h2 {
    margin-top: 3px;
    font-size: clamp(1.35rem, 2vw, 1.7rem);
}

.trilia-background-dialog__eyebrow {
    color: var(--trilia-color-primary);
    font-size: var(--trilia-font-size-label-small, .75rem);
    font-weight: var(--trilia-font-weight-heavy);
    letter-spacing: .09em;
    text-transform: uppercase;
}

.trilia-background-dialog__body {
    display: grid;
    overflow-y: auto;
    gap: var(--trilia-space-xl);
    padding: var(--trilia-space-xxl);
    overscroll-behavior: contain;
    background: var(--trilia-color-surface-low);
}

.trilia-background-dialog__intro {
    max-width: 760px;
    margin: 0;
    color: var(--trilia-color-text-muted);
}

.trilia-background-section {
    display: grid;
    gap: var(--trilia-space-lg);
    padding: var(--trilia-space-lg);
    border: 1px solid var(--trilia-color-outline-variant);
    border-radius: var(--trilia-radius-large);
    background: var(--trilia-color-surface-lowest);
}

.trilia-background-section__heading {
    display: flex;
    gap: var(--trilia-space-lg);
    align-items: start;
    justify-content: space-between;
}

.trilia-background-section__heading h3 {
    font-size: var(--trilia-font-size-title-small);
}

.trilia-background-section__heading > span,
.trilia-background-section__heading p,
.trilia-background-dialog__footer > span,
.trilia-background-local__status {
    color: var(--trilia-color-text-muted);
    font-size: var(--trilia-font-size-body-small);
}

.trilia-background-section__heading > span {
    flex: 0 0 auto;
    padding: 4px 9px;
    border-radius: var(--trilia-radius-pill);
    background: var(--trilia-color-surface-high);
}

.trilia-background-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--trilia-space-md);
}

.trilia-background-choice {
    position: relative;
    display: grid;
    min-width: 0;
    overflow: hidden;
    padding: 0;
    border: 1px solid var(--trilia-color-outline-variant);
    border-radius: var(--trilia-radius-medium);
    background: var(--trilia-color-surface);
    color: var(--trilia-color-text);
    cursor: pointer;
    text-align: left;
    transition:
        border-color var(--trilia-duration-fast),
        box-shadow var(--trilia-duration-fast),
        transform var(--trilia-duration-fast);
}

.trilia-background-choice:hover {
    border-color: color-mix(in srgb, var(--trilia-color-primary) 58%, var(--trilia-color-outline-variant));
    transform: translateY(-1px);
}

.trilia-background-choice[aria-pressed="true"] {
    border-color: var(--trilia-color-primary);
    box-shadow: 0 0 0 2px color-mix(in srgb, var(--trilia-color-primary) 18%, transparent);
}

.trilia-background-choice__preview {
    display: block;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--trilia-color-surface-high);
}

.trilia-background-choice__preview img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.trilia-background-choice__preview--clean {
    background:
        radial-gradient(circle at 17% 18%, color-mix(in srgb, var(--trilia-color-primary) 12%, transparent), transparent 42%),
        radial-gradient(circle at 86% 76%, color-mix(in srgb, var(--trilia-color-secondary) 10%, transparent), transparent 38%),
        linear-gradient(145deg, var(--trilia-color-background), var(--trilia-color-surface-low));
}

.trilia-background-choice__meta {
    display: grid;
    gap: 2px;
    padding: var(--trilia-space-sm) var(--trilia-space-md) var(--trilia-space-md);
}

.trilia-background-choice__meta strong {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.trilia-background-choice__meta span {
    color: var(--trilia-color-text-muted);
    font-size: var(--trilia-font-size-label-small, .75rem);
}

.trilia-background-choice__check {
    position: absolute;
    top: 8px;
    right: 8px;
    display: grid;
    width: 24px;
    height: 24px;
    place-items: center;
    border-radius: 50%;
    background: var(--trilia-color-primary);
    color: var(--trilia-color-on-primary);
    font-size: .8rem;
    font-weight: 800;
    opacity: 0;
    transform: scale(.85);
    transition: opacity var(--trilia-duration-fast), transform var(--trilia-duration-fast);
}

.trilia-background-choice[aria-pressed="true"] .trilia-background-choice__check {
    opacity: 1;
    transform: scale(1);
}

.trilia-background-local[data-selected="true"] {
    border-color: var(--trilia-color-primary);
    box-shadow: 0 0 0 2px color-mix(in srgb, var(--trilia-color-primary) 16%, transparent);
}

.trilia-background-local__content {
    display: grid;
    grid-template-columns: minmax(180px, 260px) minmax(0, 1fr);
    gap: var(--trilia-space-lg);
    align-items: center;
}

.trilia-background-local__preview {
    position: relative;
    display: grid;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    place-items: center;
    border: 1px dashed var(--trilia-color-outline);
    border-radius: var(--trilia-radius-medium);
    background:
        linear-gradient(135deg, var(--trilia-color-surface-low), var(--trilia-color-surface-high));
    color: var(--trilia-color-text-muted);
}

.trilia-background-local__preview > svg {
    width: 30px;
    height: 30px;
}

.trilia-background-local__preview img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.trilia-background-local__actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--trilia-space-sm);
    align-items: center;
}

.trilia-background-local__status {
    width: 100%;
    min-height: 1.4em;
}

.trilia-background-text-action {
    padding: 6px 4px;
    border: 0;
    background: transparent;
    color: var(--trilia-color-text-muted);
    cursor: pointer;
    font: inherit;
    font-size: var(--trilia-font-size-body-small);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.trilia-background-text-action:hover {
    color: var(--trilia-color-primary);
}

.trilia-background-effects[data-disabled="true"] {
    opacity: .62;
}

.trilia-background-range {
    display: grid;
    gap: var(--trilia-space-sm);
}

.trilia-background-range__label {
    display: flex;
    gap: var(--trilia-space-md);
    align-items: center;
    justify-content: space-between;
}

.trilia-background-range output {
    min-width: 48px;
    color: var(--trilia-color-text-muted);
    font-variant-numeric: tabular-nums;
    text-align: right;
}

.trilia-background-range input[type="range"] {
    width: 100%;
    margin: 0;
    accent-color: var(--trilia-color-primary);
}

.trilia-background-dialog__footer {
    border-top: 1px solid var(--trilia-color-outline-variant);
}

html.trilia-background-dialog-open {
    overflow: hidden;
}

@media (max-width: 782px) {
    body.admin-bar .trilia-background-stage {
        top: calc(var(--trilia-header-height) + 46px);
    }
}

@media (max-width: 700px) {
    .trilia-site-footer__inner {
        grid-template-columns: minmax(0, 1fr) auto;
    }

    .trilia-site-footer__actions {
        padding-right: 42px;
    }

    .trilia-background-dialog {
        width: min(calc(100vw - 20px), 920px);
        max-height: calc(100dvh - 20px);
        border-radius: var(--trilia-radius-large);
    }

    .trilia-background-dialog__header,
    .trilia-background-dialog__footer,
    .trilia-background-dialog__body {
        padding: var(--trilia-space-lg);
    }

    .trilia-background-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .trilia-background-local__content {
        grid-template-columns: 1fr;
    }

    .trilia-background-local__preview {
        max-width: 320px;
    }

    .trilia-background-dialog__footer {
        align-items: stretch;
        flex-direction: column;
    }

    .trilia-background-dialog__footer .trilia-button {
        justify-content: center;
    }
}

@media (max-width: 420px) {
    .trilia-background-grid {
        grid-template-columns: 1fr;
    }
}

@media (prefers-reduced-motion: reduce) {
    .trilia-background-stage,
    .trilia-background-choice,
    .trilia-background-choice__check {
        transition: none;
    }
}

.trilia-background-dialog [hidden] {
    display: none !important;
}