:root {
    --teacher-shell-accent: #3b82f6;
}

.teacher-shell-body {
    min-height: 100vh;
    font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

.teacher-shell-body[data-teacher-shell-layout="wide"] #teacher-route-root {
    width: 100%;
    max-width: none;
}

#teacher-route-root[aria-busy="true"] {
    cursor: progress;
}

#teacher-route-root:focus {
    outline: none;
}

#teacher-route-root:focus-visible {
    outline: 3px solid color-mix(in srgb, var(--teacher-shell-accent) 45%, transparent);
    outline-offset: 4px;
}

.teacher-shell-sr-only,
.teacher-shell-live {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

[data-teacher-shell-nav][aria-current="page"] {
    color: var(--teacher-shell-accent);
}

@media (prefers-reduced-motion: reduce) {
    #teacher-route-root,
    #teacher-route-root * {
        scroll-behavior: auto !important;
    }
}