.app-shell {
    position: relative;
    isolation: isolate;
}

.btn,
button,
input[type='submit'],
.card,
.server-card,
.site-nav a,
.dashboard-nav a,
.status-badge {
    transition:
        transform var(--motion-base) var(--motion-ease),
        box-shadow var(--motion-base) var(--motion-ease),
        border-color var(--motion-base) var(--motion-ease),
        background-color var(--motion-base) var(--motion-ease),
        color var(--motion-base) var(--motion-ease),
        opacity var(--motion-base) var(--motion-ease);
}

.btn:hover,
button:hover,
input[type='submit']:hover {
    transform: translateY(-1px);
}

.btn:active,
button:active,
input[type='submit']:active {
    transform: translateY(0);
}

.btn:focus-visible,
button:focus-visible,
input[type='submit']:focus-visible,
a:focus-visible,
select:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--color-focus-ring);
    outline-offset: 2px;
    box-shadow: var(--shadow-focus);
}

.btn:focus,
button:focus,
input[type='submit']:focus,
a:focus,
select:focus,
input:focus,
textarea:focus {
    outline: 2px solid var(--color-focus-ring);
    outline-offset: 2px;
}

.site-nav a:focus-visible,
.dashboard-nav a:focus-visible {
    border-radius: var(--radius-sm);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.server-card:hover {
    transform: translateY(-3px);
}

[data-ui-reveal] {
    opacity: 0;
    transform: translateY(10px);
}

[data-ui-reveal].is-visible {
    opacity: 1;
    transform: translateY(0);
    transition:
        opacity var(--motion-slow) var(--motion-ease),
        transform var(--motion-slow) var(--motion-ease);
    transition-delay: var(--reveal-delay, 0ms);
}

.loading-indicator {
    display: none;
    align-items: center;
    gap: var(--space-3);
    margin-top: var(--space-3);
}

.loading-indicator.is-active {
    display: flex;
}

.loading-spinner {
    width: 1rem;
    height: 1rem;
    border-radius: 50%;
    border: 2px solid rgba(60, 72, 87, 0.2);
    border-top-color: var(--color-primary-dark);
    animation: spin 0.8s linear infinite;
}

.btn.is-loading {
    pointer-events: none;
    opacity: 0.85;
}

.loading-progress {
    display: none;
    margin-top: var(--space-2);
    width: 100%;
    height: 0.3rem;
    border-radius: var(--radius-pill);
    background: rgba(60, 72, 87, 0.12);
    overflow: hidden;
}

.loading-progress.is-active {
    display: block;
}

.loading-progress__bar {
    display: block;
    width: 38%;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, rgba(238, 168, 73, 0.9) 0%, rgba(244, 107, 69, 0.95) 100%);
    animation: loading-progress-slide 1.1s var(--motion-ease) infinite;
}

.skeleton {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-sm);
    background: linear-gradient(90deg, #e7edf3 0%, #f5f8fb 50%, #e7edf3 100%);
    background-size: 240% 100%;
    animation: skeleton-wave 1.4s linear infinite;
}

.skeleton--line {
    height: 0.8rem;
    width: 100%;
}

.skeleton--line-short {
    width: 62%;
}

.skeleton-stack {
    display: grid;
    gap: var(--space-2);
    width: min(22rem, 100%);
}

[data-loading-form] .skeleton-stack {
    display: none;
}

[data-loading-form][aria-busy='true'] .skeleton-stack {
    display: grid;
}

.refresh-state {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    color: var(--color-text-muted);
    font-size: 0.8rem;
}

.refresh-state::before {
    content: '';
    width: 0.45rem;
    height: 0.45rem;
    border-radius: 50%;
    background: #93a5b5;
}

.refresh-state--ok::before {
    background: #1ba16d;
}

.refresh-state--stale::before {
    background: #f46b45;
}

.refresh-state--unknown::before {
    background: #93a5b5;
}

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

@keyframes skeleton-wave {
    from {
        background-position: 200% 0;
    }
    to {
        background-position: -20% 0;
    }
}

@keyframes loading-progress-slide {
    0% {
        transform: translateX(-120%);
    }
    60% {
        transform: translateX(150%);
    }
    100% {
        transform: translateX(220%);
    }
}

@media (prefers-reduced-motion: reduce) {
    .flash-stack .state-message,
    .loading-spinner,
    .skeleton,
    .loading-progress__bar,
    [data-ui-reveal].is-visible {
        animation: none !important;
    }

    .btn,
    button,
    input[type='submit'],
    .card,
    .server-card,
    .site-nav a,
    .dashboard-nav a,
    .global-account-menu > summary,
    .global-notifications-menu > summary,
    .global-mobile-nav > summary,
    .global-notifications-menu__item,
    .global-notifications-menu__item-link,
    .dashboard-activity-feed__item,
    .dashboard-credit-mini-list__item,
    .dashboard-activity-list__item,
    .dashboard-main table tbody tr,
    .inline-link-row a,
    .status-badge,
    [data-ui-reveal] {
        transition: none !important;
        transform: none !important;
    }

    [data-ui-reveal] {
        opacity: 1 !important;
    }
}