body.app-maintenance-open {
    overflow: hidden !important;
}

dialog.app-maintenance-overlay {
    position: fixed;
    inset: 0;
    z-index: 2147483647;
    box-sizing: border-box;
    display: grid;
    place-items: center;
    width: 100%;
    max-width: none;
    height: 100%;
    height: 100dvh;
    max-height: none;
    margin: 0;
    padding: 24px;
    overflow: auto;
    border: 0;
    color: #10213f;
    background: radial-gradient(ellipse at 12% 15%, #dbeafe 0, transparent 55%),
        radial-gradient(ellipse at 90% 85%, #d1fae5 0, transparent 50%), #f8fafc;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 16px;
    line-height: 1.6;
    text-align: center;
}

dialog.app-maintenance-overlay:not([open]) {
    display: none;
}

dialog.app-maintenance-overlay::backdrop {
    background: #f8fafc;
}

.app-maintenance-overlay .app-maintenance-card {
    box-sizing: border-box;
    width: min(100%, 560px);
    margin: auto;
    padding: 36px;
    border: 1px solid #dce7ef;
    border-radius: 24px;
    background: #fff;
    box-shadow: 0 24px 64px rgba(15, 35, 75, .1);
}

.app-maintenance-overlay .app-maintenance-brand {
    margin: 0 0 26px;
    color: #0f766e;
    font-size: 16px;
    font-weight: 800;
    letter-spacing: .18em;
}

.app-maintenance-overlay .app-maintenance-badge {
    display: inline-block;
    margin: 0 0 16px;
    padding: 5px 12px;
    border: 1px solid #a7f3d0;
    border-radius: 99px;
    color: #047857;
    background: #ecfdf5;
    font-size: 12px;
    font-weight: 750;
    letter-spacing: .05em;
}

.app-maintenance-overlay .app-maintenance-title {
    margin: 0 0 14px;
    color: #10213f;
    font-size: clamp(26px, 4vw, 34px);
    font-weight: 750;
    line-height: 1.25;
    letter-spacing: -.025em;
    overflow-wrap: anywhere;
}

.app-maintenance-overlay .app-maintenance-message {
    margin: 0 0 20px;
    color: #475569;
    font-size: 16px;
    line-height: 1.7;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}

.app-maintenance-overlay .app-maintenance-expected {
    margin: 0 0 20px;
    padding: 12px;
    border-radius: 12px;
    color: #1e40af;
    background: #eff6ff;
    font-size: 14px;
    font-weight: 650;
}

.app-maintenance-overlay .app-maintenance-note {
    margin: 0 0 24px;
    color: #64748b;
    font-size: 14px;
    line-height: 1.6;
}

.app-maintenance-overlay .app-maintenance-check {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: auto;
    min-height: 46px;
    margin: 0;
    padding: 11px 24px;
    border: 1px solid #0f766e;
    border-radius: 12px;
    color: #fff;
    background: #0f766e;
    box-shadow: none;
    font: inherit;
    font-weight: 700;
    cursor: pointer;
    transform: none;
}

.app-maintenance-overlay .app-maintenance-check:hover {
    background: #115e59;
}

.app-maintenance-overlay .app-maintenance-check:focus-visible {
    outline: 3px solid #93c5fd;
    outline-offset: 4px;
}

.app-maintenance-overlay .app-maintenance-check:disabled {
    opacity: .65;
    cursor: wait;
}

.app-maintenance-overlay .app-maintenance-status {
    min-height: 2.6em;
    margin: 16px 0 0;
    color: #64748b;
    font-size: 12px;
    line-height: 1.5;
}

.app-maintenance-toast {
    position: fixed;
    right: 20px;
    bottom: max(20px, env(safe-area-inset-bottom));
    z-index: 2147483647;
    box-sizing: border-box;
    max-width: calc(100vw - 40px);
    padding: 14px 18px;
    border: 1px solid #a7f3d0;
    border-radius: 12px;
    color: #065f46;
    background: #ecfdf5;
    box-shadow: 0 8px 24px rgba(15, 35, 75, .12);
    font: 14px/1.6 system-ui, sans-serif;
}

@media (max-width: 480px) {
    dialog.app-maintenance-overlay { padding: 16px; }
    .app-maintenance-overlay .app-maintenance-card { padding: 28px 22px; }
}