:root {
    --ui-motion-duration: 250ms;
    --ui-motion-ease: cubic-bezier(0.4, 0, 0.2, 1);
    --ui-motion-stagger: 24ms;
    --ui-motion-stagger-max: 120ms;
}

.ui-collapse {
    display: grid;
    grid-template-rows: 0fr;
    overflow: hidden;
    transition: grid-template-rows var(--ui-motion-duration) var(--ui-motion-ease);
}

.ui-collapse.is-expanded {
    grid-template-rows: 1fr;
}

.ui-collapse__inner {
    min-height: 0;
    overflow: hidden;
}

.ui-reveal {
    opacity: 0;
    transform: translate3d(0, 8px, 0);
    transition:
        opacity var(--ui-motion-duration) var(--ui-motion-ease),
        transform var(--ui-motion-duration) var(--ui-motion-ease);
    will-change: opacity, transform;
}

.ui-reveal.is-visible {
    opacity: 1;
    transform: translate3d(0, 0, 0);
}

.ui-surface-swap {
    position: relative;
}

.ui-surface-swap__layer {
    transition: opacity var(--ui-motion-duration) var(--ui-motion-ease);
}

.ui-surface-swap__layer[hidden] {
    display: block !important;
    opacity: 0;
    pointer-events: none;
    position: absolute;
    inset: 0;
    visibility: hidden;
}

.ui-surface-swap__layer:not([hidden]) {
    opacity: 1;
    position: relative;
    visibility: visible;
}

.ui-spinner {
    position: relative;
    display: inline-block;
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    contain: strict;
}

.ui-spinner::after {
    content: "";
    box-sizing: border-box;
    display: block;
    width: 100%;
    height: 100%;
    border: 2px solid var(--surface-border);
    border-top-color: var(--primary);
    border-radius: 50%;
    transform-origin: 50% 50%;
    backface-visibility: hidden;
    animation: ui-spin 0.8s linear infinite;
    will-change: transform;
}

.ui-spinner--sm {
    width: 22px;
    height: 22px;
}

@keyframes ui-spin {
    to {
        transform: rotate3d(0, 0, 1, 1turn);
    }
}

.ui-loading-scrim {
    position: absolute;
    inset: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    visibility: hidden;
    pointer-events: none;
}

.ui-loading-scrim::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 0;
    background: color-mix(in srgb, var(--surface-card) 92%, transparent);
    opacity: 0;
    transition: opacity var(--ui-motion-duration) var(--ui-motion-ease);
}

.ui-loading-scrim.is-active {
    visibility: visible;
    pointer-events: auto;
}

.ui-loading-scrim.is-active::before {
    opacity: 1;
}

.ui-loading-scrim > .ui-spinner {
    position: relative;
    z-index: 1;
    transform: translate3d(0, 0, 0);
}

.ui-loading-scrim--region::before {
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-md);
}

.ui-page-loading {
    position: fixed;
    inset: 0;
    z-index: 9998;
    display: flex;
    align-items: center;
    justify-content: center;
    visibility: hidden;
    pointer-events: none;
    transition: visibility 0s linear var(--ui-motion-duration);
}

.ui-page-loading.is-active {
    visibility: visible;
    pointer-events: auto;
    transition: visibility 0s linear 0s;
}

.ui-page-loading__backdrop {
    position: absolute;
    inset: 0;
    z-index: 0;
    background: rgba(15, 23, 42, 0.48);
    opacity: 0;
    transition: opacity var(--ui-motion-duration) var(--ui-motion-ease);
}

.ui-page-loading.is-active .ui-page-loading__backdrop {
    opacity: 1;
}

.ui-page-loading__indicator {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 3.25rem;
    height: 3.25rem;
    border-radius: var(--radius-xl);
    background: var(--surface-card);
    border: 1px solid var(--surface-border);
    box-shadow: var(--shadow-md, 0 12px 32px rgba(15, 23, 42, 0.18));
    transform: translate3d(0, 0, 0);
    contain: layout style paint;
}

html.is-page-loading {
    overflow: hidden;
}

html.is-page-loading .app-wrapper {
    filter: blur(4px);
    transition: filter var(--ui-motion-duration) var(--ui-motion-ease);
}

@media (prefers-reduced-motion: reduce) {
    .ui-collapse {
        transition: none;
    }

    .ui-reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }

    .ui-surface-swap__layer {
        transition: none;
    }

    .ui-spinner::after {
        animation-duration: 1.4s;
    }

    .ui-loading-scrim::before,
    .ui-page-loading__backdrop {
        transition: none;
    }

    .ui-page-loading {
        transition: none;
    }

    html.is-page-loading .app-wrapper {
        filter: none;
        transition: none;
    }
}