.acem-uss-page {
    max-width: 1040px;
    margin: 24px auto;
    padding: 0 16px;
}

.acem-uss-page h2 {
    margin: 0 0 18px;
}

.acem-uss-summary-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
    margin-bottom: 12px;
}

.acem-uss-summary-grid--exam {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.acem-uss-summary-grid--free {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.acem-uss-summary-grid--account {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.acem-uss-summary-card {
    border: 1px solid #d9dee7;
    background: #fff;
    padding: 14px;
}

.acem-uss-summary-card span {
    display: block;
    color: #64748b;
    font-size: 0.86rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.acem-uss-summary-card strong {
    display: block;
    color: #0f172a;
    font-size: 1.35rem;
    line-height: 1.2;
}

.acem-uss-panel {
    border: 1px solid #d9dee7;
    background: #fff;
    padding: 16px;
    margin-bottom: 16px;
}

.acem-uss-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}

.acem-uss-panel-header h3 {
    margin: 0;
    font-size: 1.15rem;
}

.acem-uss-quick-study {
    border: 1px solid #d9dee7;
    background: #fff;
    padding: 16px;
}

.acem-uss-quick-study h3 {
    margin: 0 0 12px;
}

.acem-uss-quick-study-form {
    display: grid;
    gap: 9px;
}

.acem-uss-quick-study-form label {
    color: #334155;
    font-weight: 700;
}

.acem-uss-quick-study-form input,
.acem-uss-quick-study-form select {
    width: 100%;
}

.acem-uss-quick-study-form .acem-uss-button {
    margin-top: 4px;
}

.acem-uss-panel-note {
    color: #64748b;
    font-size: 0.92rem;
    margin: -4px 0 12px;
}

.acem-uss-empty,
.acem-uss-muted {
    color: #64748b;
}

.acem-uss-table-wrap {
    overflow-x: auto;
}

.acem-uss-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
}

.acem-uss-table th,
.acem-uss-table td {
    padding: 10px 9px;
    border-bottom: 1px solid #e5e7eb;
    text-align: left;
    vertical-align: middle;
    white-space: nowrap;
}

.acem-uss-table th {
    color: #334155;
    font-weight: 700;
    background: #f8fafc;
}

.acem-uss-status {
    display: inline-block;
    padding: 3px 8px;
    border-radius: 999px;
    font-size: 0.82rem;
    font-weight: 700;
}

.acem-uss-status--active {
    color: #075985;
    background: #e0f2fe;
}

.acem-uss-status--submitted {
    color: #166534;
    background: #dcfce7;
}

.acem-uss-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 34px;
    padding: 6px 11px;
    border-radius: 4px;
    background: #005f8a;
    color: #fff;
    font-weight: 700;
    text-decoration: none;
}

.acem-uss-button--secondary {
    background: #475569;
}

.acem-uss-button--danger {
    background: #b91c1c;
}

.acem-uss-button:hover,
.acem-uss-button:focus {
    background: #004766;
    color: #fff;
}

.acem-uss-button--secondary:hover,
.acem-uss-button--secondary:focus {
    background: #334155;
}

.acem-uss-button--danger:hover,
.acem-uss-button--danger:focus {
    background: #7f1d1d;
}

.acem-uss-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.acem-uss-shared-feedback-actions {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.acem-uss-autosave-status {
    color: #64748b;
    font-size: 0.92rem;
}

.acem-uss-autosave-status[data-state="saved"] {
    color: #166534;
}

.acem-uss-autosave-status[data-state="saving"] {
    color: #075985;
}

.acem-uss-autosave-status[data-state="error"] {
    color: #b91c1c;
    font-weight: 700;
}

.acem-uss-collapse {
    border-top: 1px solid #e5e7eb;
    padding-top: 12px;
    margin-top: 12px;
}

.acem-uss-collapse summary {
    cursor: pointer;
    color: #0f172a;
    font-weight: 700;
}

.acem-uss-collapse[open] summary {
    margin-bottom: 12px;
}

.acem-uss-link-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.acem-uss-link-list li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 9px 0;
    border-bottom: 1px solid #e5e7eb;
}

.acem-uss-link-list a {
    font-weight: 700;
}

.acem-uss-link-list span {
    color: #64748b;
    font-size: 0.86rem;
    white-space: nowrap;
}

.acem-uss-tabs {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.acem-uss-tab-input {
    height: 1px;
    opacity: 0;
    position: absolute;
    width: 1px;
}

.acem-uss-tab-label {
    border: 1px solid #cbd5e1;
    color: #334155;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 700;
    line-height: 1.2;
    padding: 7px 11px;
}

.acem-uss-tab-label:hover,
.acem-uss-tab-input:focus + .acem-uss-tab-label {
    border-color: #64748b;
}

.acem-uss-tab-panel {
    display: none;
    margin-top: 8px;
    width: 100%;
}

#acem-uss-review-list-tab:checked ~ label[for="acem-uss-review-list-tab"],
#acem-uss-review-topic-tab:checked ~ label[for="acem-uss-review-topic-tab"] {
    background: #0f172a;
    border-color: #0f172a;
    color: #fff;
}

#acem-uss-review-list-tab:checked ~ .acem-uss-review-panel--list,
#acem-uss-review-topic-tab:checked ~ .acem-uss-review-panel--topics {
    display: block;
}

.acem-uss-topic-review-group {
    border-top: 1px solid #e5e7eb;
    padding: 10px 0;
}

.acem-uss-topic-review-group:first-child {
    border-top: 0;
}

.acem-uss-topic-review-group summary {
    align-items: center;
    cursor: pointer;
    display: flex;
    font-weight: 700;
    justify-content: space-between;
}

.acem-uss-topic-review-group summary span {
    color: #64748b;
    font-size: 0.86rem;
}

.acem-uss-alert {
    border: 1px solid #bae6fd;
    background: #f0f9ff;
    color: #075985;
    margin: 0 0 14px;
    padding: 10px 12px;
}

.acem-uss-alert--error {
    border-color: #fecaca;
    background: #fef2f2;
    color: #991b1b;
}

.acem-uss-account-form label,
.acem-uss-account-form input[type="text"] {
    display: block;
}

.acem-uss-account-form input[type="text"] {
    max-width: 360px;
    width: 100%;
}

.acem-uss-inline-check {
    align-items: flex-start;
    display: flex !important;
    gap: 8px;
}

.acem-uss-danger-panel {
    border-color: #fecaca;
}

.acem-uss-shared-meta {
    color: #64748b;
    margin-top: -8px;
}

.acem-uss-shared-question {
    border-top: 1px solid #e5e7eb;
    padding-top: 16px;
    margin-top: 16px;
}

.acem-uss-shared-question h3 {
    margin: 0 0 10px;
}

.acem-uss-shared-question-html {
    border: 1px solid #e5e7eb;
    background: #fff;
    margin-bottom: 14px;
    padding: 12px;
}

.acem-uss-shared-question--single {
    border: 0;
    padding: 0;
}

.acem-uss-shared-question--single .acem-uss-shared-question-html {
    border: 0;
    margin-bottom: 0;
    padding: 0;
}

.acem-uss-shared-model-answer {
    margin-top: 20px;
}

.acem-uss-shared-model-answer__box {
    border: 1px solid #e5e7eb;
    background: #fff;
    margin-top: 10px;
    padding: 12px;
}

.acem-uss-shared-owner-field {
    background: #f8fafc !important;
    color: #334155 !important;
}

.acem-uss-shared-source-field {
    display: none !important;
}

.acem-uss-tracked-editor {
    background: #fff;
    border: 1px solid #cbd5e1;
    color: #111827;
    min-height: 96px;
    padding: 8px;
    width: 100%;
}

.acem-uss-tracked-editor:focus {
    border-color: #ef4444;
    box-shadow: 0 0 0 1px #ef4444;
    outline: none;
}

.acem-uss-review-insert {
    color: #b91c1c;
}

.acem-uss-review-score-field {
    border-color: #fecaca !important;
    color: #b91c1c !important;
}

.acem-uss-review-score-field:focus {
    border-color: #ef4444 !important;
    box-shadow: 0 0 0 1px #ef4444 !important;
    outline: none;
}

.acem-uss-review-score-field.has-review-score {
    font-weight: 700;
}

.acem-uss-answer-feedback {
    display: grid;
    gap: 12px;
}

.acem-uss-answer-feedback__item {
    border: 1px solid #e5e7eb;
    padding: 12px;
}

.acem-uss-answer-feedback__item label,
.acem-uss-comment-form label {
    display: block;
    color: #334155;
    font-weight: 700;
    margin-bottom: 6px;
}

.acem-uss-owner-answer {
    background: #fff;
    border: 1px solid #e5e7eb;
    margin-bottom: 10px;
    padding: 10px;
}

.acem-uss-feedback-input {
    border: 1px solid #fecaca;
    color: #b91c1c;
    min-height: 92px;
    width: 100%;
}

.acem-uss-feedback-input:focus {
    border-color: #ef4444;
    box-shadow: 0 0 0 1px #ef4444;
    outline: none;
}

.acem-uss-existing-feedback {
    margin-top: 10px;
}

.acem-uss-feedback-entry,
.acem-uss-comment {
    border-left: 3px solid #e5e7eb;
    margin-top: 8px;
    padding-left: 10px;
}

.acem-uss-feedback-entry {
    border-left-color: #ef4444;
    color: #b91c1c;
}

.acem-uss-comment-form textarea {
    min-height: 110px;
    width: 100%;
}

@media (max-width: 780px) {
    .acem-uss-summary-grid,
    .acem-uss-summary-grid--exam,
    .acem-uss-summary-grid--free {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 520px) {
    .acem-uss-summary-grid,
    .acem-uss-summary-grid--exam,
    .acem-uss-summary-grid--free {
        grid-template-columns: 1fr;
    }
    .acem-uss-link-list li {
        align-items: flex-start;
        flex-direction: column;
        gap: 2px;
    }
}