.j277-quiz-outer {
    margin: 1.5rem 0;
}

.j277-quiz-app,
.j277-leaderboard-card,
.j277-teacher-dashboard-card {
    --j277-bg: #ffffff;
    --j277-panel: #f7f8fc;
    --j277-panel-2: #eef2ff;
    --j277-border: #dbe2f0;
    --j277-text: #182230;
    --j277-muted: #5f6b7a;
    --j277-primary: #2b59ff;
    --j277-primary-dark: #1d44d6;
    --j277-success: #167d47;
    --j277-success-bg: #e8f7ef;
    --j277-danger: #b42318;
    --j277-danger-bg: #fdecec;
    --j277-warning: #9a6700;
    --j277-shadow: 0 10px 28px rgba(16, 24, 40, 0.08);
    color: var(--j277-text);
    background: var(--j277-bg);
    border: 1px solid var(--j277-border);
    border-radius: 18px;
    box-shadow: var(--j277-shadow);
    overflow: hidden;
    font-size: 16px;
    line-height: 1.5;
}

.j277-quiz-loading,
.j277-quiz-error {
    padding: 1.25rem 1.5rem;
}

.j277-quiz-error {
    color: var(--j277-danger);
    background: var(--j277-danger-bg);
}

.j277-quiz-shell {
    padding: 1.5rem;
}

.j277-quiz-header {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 1rem;
    align-items: start;
    margin-bottom: 1.25rem;
}

.j277-quiz-title {
    margin: 0;
    font-size: 1.6rem;
    line-height: 1.2;
}

.j277-quiz-subtitle {
    margin: 0.35rem 0 0;
    color: var(--j277-muted);
    font-size: 0.98rem;
}

.j277-quiz-badge-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.j277-quiz-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.4rem 0.75rem;
    border-radius: 999px;
    background: var(--j277-panel-2);
    color: var(--j277-primary-dark);
    font-size: 0.9rem;
    font-weight: 600;
}

.j277-quiz-panel {
    background: var(--j277-panel);
    border: 1px solid var(--j277-border);
    border-radius: 16px;
    padding: 1rem;
    margin-bottom: 1rem;
}

.j277-quiz-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.j277-quiz-field label,
.j277-quiz-checkbox-row legend {
    display: block;
    font-weight: 700;
    margin-bottom: 0.4rem;
}

.j277-quiz-field select,
.j277-quiz-field input[type="text"],
.j277-quiz-field input[type="number"] {
    width: 100%;
    border: 1px solid var(--j277-border);
    border-radius: 12px;
    padding: 0.75rem 0.9rem;
    background: #fff;
    color: var(--j277-text);
    font-size: 1rem;
    box-sizing: border-box;
}

.j277-quiz-checkbox-row {
    border: 0;
    padding: 0;
    margin: 0.25rem 0 0;
}

.j277-quiz-checks {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.j277-quiz-checks label {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    font-weight: 600;
    color: var(--j277-text);
}

.j277-quiz-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1rem;
}

.j277-btn {
    appearance: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 0;
    border-radius: 12px;
    padding: 0.8rem 1.1rem;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    text-decoration: none;
    transition: transform 0.12s ease, background 0.12s ease, opacity 0.12s ease;
}

.j277-btn:hover {
    transform: translateY(-1px);
}

.j277-btn:disabled {
    opacity: 0.55;
    cursor: not-allowed;
    transform: none;
}

.j277-btn-primary {
    background: var(--j277-primary);
    color: #fff;
}

.j277-btn-primary:hover {
    background: var(--j277-primary-dark);
}

.j277-btn-secondary {
    background: #fff;
    color: var(--j277-text);
    border: 1px solid var(--j277-border);
}

.j277-btn-ghost {
    background: transparent;
    color: var(--j277-primary-dark);
    border: 1px solid var(--j277-border);
}

.j277-progress-wrap {
    margin-bottom: 1rem;
}

.j277-progress-top {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.45rem;
    font-size: 0.95rem;
    color: var(--j277-muted);
    font-weight: 600;
}

.j277-progress-bar {
    width: 100%;
    height: 12px;
    background: #dbe2f0;
    border-radius: 999px;
    overflow: hidden;
}

.j277-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--j277-primary), #6b86ff);
    border-radius: 999px;
    transition: width 0.2s ease;
}

.j277-quiz-question-card {
    background: #fff;
    border: 1px solid var(--j277-border);
    border-radius: 18px;
    padding: 1.25rem;
}

.j277-quiz-topic {
    display: inline-block;
    padding: 0.35rem 0.7rem;
    border-radius: 999px;
    background: var(--j277-panel-2);
    color: var(--j277-primary-dark);
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 0.9rem;
}

.j277-quiz-question-text {
    font-size: 1.15rem;
    font-weight: 700;
    margin: 0 0 1rem;
}

.j277-quiz-options {
    display: grid;
    gap: 0.75rem;
}

.j277-option {
    position: relative;
    border: 1px solid var(--j277-border);
    background: #fff;
    border-radius: 14px;
    overflow: hidden;
}

.j277-option:hover {
    border-color: #aeb9d6;
}

.j277-option input {
    position: absolute;
    opacity: 0;
    inset: 0;
}

.j277-option label {
    display: flex;
    align-items: start;
    gap: 0.75rem;
    padding: 0.9rem 1rem;
    cursor: pointer;
}

.j277-option-key {
    flex: 0 0 auto;
    width: 2rem;
    height: 2rem;
    border-radius: 999px;
    background: var(--j277-panel);
    border: 1px solid var(--j277-border);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

.j277-option input:checked + label {
    background: #eef3ff;
    border-left: 5px solid var(--j277-primary);
    padding-left: calc(1rem - 5px);
}

.j277-option input:checked + label .j277-option-key {
    background: var(--j277-primary);
    color: #fff;
    border-color: var(--j277-primary);
}

.j277-nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 0.75rem;
    margin-top: 1rem;
}

.j277-results-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.j277-stat-card {
    background: #fff;
    border: 1px solid var(--j277-border);
    border-radius: 18px;
    padding: 1.1rem;
}

.j277-score-main {
    font-size: 2.4rem;
    font-weight: 800;
    line-height: 1;
    margin: 0;
}

.j277-score-sub {
    margin: 0.4rem 0 0;
    color: var(--j277-muted);
    font-weight: 600;
}

.j277-stat-list {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.75rem;
    margin-top: 1rem;
}

.j277-stat {
    background: var(--j277-panel);
    border-radius: 14px;
    padding: 0.85rem;
    text-align: center;
}

.j277-stat strong {
    display: block;
    font-size: 1.3rem;
}

.j277-breakdown-list {
    display: grid;
    gap: 0.75rem;
}

.j277-breakdown-item {
    padding: 0.8rem 0.9rem;
    border-radius: 14px;
    background: var(--j277-panel);
}

.j277-breakdown-item strong {
    display: block;
    margin-bottom: 0.25rem;
}

.j277-review-list {
    display: grid;
    gap: 1rem;
}

.j277-review-card {
    background: #fff;
    border: 1px solid var(--j277-border);
    border-radius: 16px;
    padding: 1rem;
}

.j277-review-card.is-correct {
    border-color: #96d8b5;
    background: var(--j277-success-bg);
}

.j277-review-card.is-incorrect {
    border-color: #efb3ae;
    background: var(--j277-danger-bg);
}

.j277-review-card.is-unanswered {
    border-color: #e2d3a4;
    background: #fff9e8;
}

.j277-review-status {
    font-weight: 800;
    margin-bottom: 0.55rem;
}

.j277-review-meta {
    display: grid;
    gap: 0.3rem;
    color: var(--j277-text);
}

.j277-muted {
    color: var(--j277-muted);
}

@media (max-width: 860px) {
    .j277-quiz-grid,
    .j277-results-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .j277-quiz-shell {
        padding: 1rem;
    }

    .j277-stat-list {
        grid-template-columns: 1fr;
    }

    .j277-nav {
        flex-direction: column;
        align-items: stretch;
    }

    .j277-actions {
        flex-direction: column;
        align-items: stretch;
    }
}


.j277-quiz-grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.j277-quiz-grid-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.j277-quiz-header--compact {
    margin-bottom: 0.75rem;
}

.j277-quiz-field textarea,
.j277-quiz-field select,
.j277-quiz-field input[type="text"],
.j277-quiz-field input[type="number"] {
    max-width: 100%;
}

@media (max-width: 1040px) {
    .j277-quiz-grid-3,
    .j277-quiz-grid-4 {
        grid-template-columns: 1fr 1fr;
    }
}

.j277-btn-text {
    background: transparent;
    color: var(--j277-primary-dark);
    padding: 0;
    border-radius: 0;
}

.j277-btn-text:hover {
    transform: none;
    text-decoration: underline;
}

.j277-flag-wrapper {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--j277-border);
}

.j277-flag-wrapper--review {
    margin-top: 0.85rem;
}

.j277-flag-inline {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.65rem;
}

.j277-flag-hint {
    color: var(--j277-muted);
    font-size: 0.95rem;
}

.j277-flag-panel {
    margin-top: 0.9rem;
    padding: 1rem;
    border: 1px solid var(--j277-border);
    border-radius: 14px;
    background: var(--j277-panel);
}

.j277-flag-panel .j277-quiz-field + .j277-quiz-field {
    margin-top: 0.8rem;
}

.j277-flag-panel textarea {
    width: 100%;
    min-height: 96px;
    border: 1px solid var(--j277-border);
    border-radius: 12px;
    padding: 0.75rem 0.9rem;
    background: #fff;
    color: var(--j277-text);
    font-size: 1rem;
    box-sizing: border-box;
}

.j277-flag-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 0.9rem;
}

.j277-flag-status {
    margin-top: 0.6rem;
    color: var(--j277-muted);
    font-size: 0.95rem;
}

.j277-flag-status.is-success {
    color: var(--j277-success);
    font-weight: 700;
}

.j277-flag-status.is-error {
    color: var(--j277-danger);
    font-weight: 700;
}

.j277-flag-wrapper.is-pending {
    opacity: 0.9;
}


.j277-leaderboard-card {
    color: var(--j277-text);
}

.j277-admin-summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
    margin-bottom: 1rem;
}

.j277-admin-mini-stat {
    background: #fff;
    border: 1px solid var(--j277-border);
    border-radius: 16px;
    padding: 1rem;
}

.j277-admin-mini-stat__label {
    display: block;
    color: var(--j277-muted);
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 0.35rem;
}

.j277-admin-mini-stat__value {
    display: block;
    font-size: 1.55rem;
    line-height: 1.1;
}

.j277-admin-detail-section + .j277-admin-detail-section {
    margin-top: 1.25rem;
}

.j277-admin-detail-section h4 {
    margin: 0 0 0.75rem;
    font-size: 1.05rem;
}

.j277-leaderboard-filter-grid {
    align-items: end;
}

.j277-leaderboard-filter-actions-wrap {
    display: flex;
    align-items: end;
}

.j277-leaderboard-filter-actions {
    margin-top: 0;
}

.j277-leaderboard-table-wrap {
    overflow-x: auto;
}

.j277-leaderboard-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 560px;
}

.j277-leaderboard-table th,
.j277-leaderboard-table td {
    padding: 0.85rem 0.75rem;
    border-bottom: 1px solid var(--j277-border);
    text-align: left;
    vertical-align: middle;
}

.j277-leaderboard-table thead th {
    color: var(--j277-muted);
    font-size: 0.92rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.j277-leaderboard-table tbody tr:last-child td {
    border-bottom: 0;
}

.j277-leaderboard-table tbody tr.is-current-user {
    background: var(--j277-panel-2);
}

.j277-leaderboard-name {
    font-weight: 700;
}

.j277-leaderboard-pill {
    display: inline-flex;
    align-items: center;
    margin-left: 0.5rem;
    padding: 0.2rem 0.55rem;
    border-radius: 999px;
    background: #fff;
    border: 1px solid var(--j277-border);
    color: var(--j277-primary-dark);
    font-size: 0.82rem;
    font-weight: 700;
}

@media (max-width: 640px) {
    .j277-leaderboard-table {
        min-width: 0;
    }

    .j277-leaderboard-filter-actions-wrap {
        display: block;
    }

    .j277-quiz-grid-4 {
        grid-template-columns: 1fr;
    }
}

.j277-summary-grid {
    margin-bottom: 0.75rem;
}

.j277-live-widget__status {
    margin: 1rem 0 0;
    color: var(--j277-muted);
    font-size: 0.92rem;
}

.j277-live-widget__status.is-error {
    color: var(--j277-danger);
    font-weight: 700;
}

.j277-live-widget.is-refreshing .j277-live-widget__status {
    opacity: 0.85;
}