.rsc-author,
.rsc-practice {
    margin-bottom: var(--spacing-lg);
}

[hidden] {
    display: none !important;
}

.site-wrapper,
.container {
    min-width: 0;
}

.rsc-author,
.rsc-practice,
.rsc-dashboard,
.rsc-dashboard-error,
.rsc-student-join,
.rsc-hint,
.subtitle,
header h1 {
    overflow-wrap: anywhere;
}

.rsc-author-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 180px 180px;
    gap: var(--spacing-md);
}

.rsc-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin: var(--spacing-md) 0;
}

.rsc-share-url {
    width: 100%;
    min-height: 44px;
    padding: 0 var(--spacing-md);
    border: 1px solid var(--gray-light);
    border-radius: var(--border-radius);
    font-size: 0.9rem;
}

.rsc-dashboard-links {
    display: grid;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    border: 2px solid color-mix(in srgb, var(--primary-color) 28%, var(--gray-light));
    border-radius: var(--border-radius-large);
    background: linear-gradient(135deg, color-mix(in srgb, var(--primary-color) 9%, var(--white)) 0%, var(--white) 100%);
    box-shadow: var(--shadow-small);
}

.rsc-link-row {
    display: grid;
    grid-template-columns: 72px minmax(0, 1fr) auto auto;
    gap: var(--spacing-sm);
    align-items: center;
}

.rsc-link-row label {
    margin: 0;
    color: var(--gray-darker);
    font-weight: var(--fw-black);
}

.rsc-link-row input {
    min-height: 44px;
    padding: 0 var(--spacing-md);
    border: 1px solid var(--gray-light);
    border-radius: var(--border-radius);
    background: var(--white);
    font-size: 0.9rem;
}

.rsc-hint {
    color: var(--gray-dark);
    line-height: 1.6;
}

.rsc-hint.is-success {
    color: var(--success-color);
    font-weight: var(--fw-bold);
}

.rsc-hint.is-warning {
    color: var(--warning-color);
    font-weight: var(--fw-bold);
}

.rsc-practice {
    padding: clamp(18px, 3vw, 34px);
    border: 1px solid var(--gray-light);
    border-radius: var(--border-radius-large);
    background: var(--white);
    box-shadow: var(--shadow-large);
}

.rsc-practice-head {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-md);
    align-items: flex-start;
    margin-bottom: var(--spacing-lg);
}

.rsc-kicker {
    margin: 0 0 4px;
    color: var(--primary-color);
    font-weight: var(--fw-black);
    letter-spacing: 0;
}

.rsc-practice-head h2 {
    margin: 0;
    color: var(--gray-darkest);
    font-size: clamp(1.45rem, 3vw, 2.25rem);
    line-height: 1.3;
}

.rsc-round-badge {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    padding: 0 var(--spacing-lg);
    border-radius: var(--border-radius-pill);
    background: var(--primary-color);
    color: var(--white);
    font-size: 1.05rem;
    font-weight: var(--fw-black);
    white-space: nowrap;
}

.rsc-reading-text {
    min-height: 220px;
    padding: clamp(18px, 3vw, 32px);
    border: 2px solid color-mix(in srgb, var(--primary-color) 20%, var(--gray-light));
    border-radius: var(--border-radius-large);
    background: #fffcf5;
    color: var(--gray-darkest);
    font-size: clamp(1.45rem, 3.8vw, 3.2rem);
    font-weight: var(--fw-bold);
    line-height: 1.65;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}

.rsc-check-card {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-large);
    background: var(--gray-lighter);
}

.rsc-check-card h3,
.rsc-log h3 {
    margin: 0 0 var(--spacing-md);
    color: var(--gray-darkest);
    font-size: 1.1rem;
}

.rsc-check-list {
    display: grid;
    gap: var(--spacing-sm);
}

.rsc-check-item {
    min-height: 48px;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--gray-light);
    border-radius: var(--border-radius);
    background: var(--white);
    font-weight: var(--fw-bold);
    cursor: pointer;
}

.rsc-check-item input {
    width: 22px;
    height: 22px;
    accent-color: var(--primary-color);
}

.rsc-result-buttons {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.rsc-result-btn {
    min-height: 72px;
    border: 0;
    border-radius: var(--border-radius-large);
    color: var(--white);
    font-size: 1.05rem;
    font-weight: var(--fw-black);
    cursor: pointer;
    box-shadow: var(--shadow-medium);
    transition: var(--transition-smooth);
}

.rsc-result-btn:hover {
    transform: translateY(var(--hover-lift-button));
}

.rsc-result-btn.good { background: var(--success-color); }
.rsc-result-btn.retry { background: var(--primary-color); }
.rsc-result-btn.hard { background: var(--warning-color); }

.rsc-log {
    padding: var(--spacing-lg);
    border: 1px solid var(--gray-light);
    border-radius: var(--border-radius-large);
}

.rsc-log-list {
    color: var(--gray-darker);
    line-height: 1.7;
}

.rsc-log-entry {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--gray-light);
}

body.student-mode .rsc-author,
body.student-mode .instructions,
body.student-mode .ad-horizontal {
    display: none !important;
}

.rsc-dashboard,
.rsc-dashboard-error,
.rsc-student-join {
    padding: clamp(18px, 3vw, 32px);
    border-radius: var(--border-radius-large);
    background: var(--white);
    box-shadow: var(--shadow-medium);
}

.rsc-dashboard-error {
    display: grid;
    justify-items: center;
    gap: var(--spacing-md);
    color: var(--gray-darker);
    text-align: center;
}

.rsc-dashboard-error i {
    color: var(--warning-color);
    font-size: 2rem;
}

.rsc-dash-head {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-md);
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
}

.rsc-dash-head h2 {
    margin: 0;
    color: var(--primary-color);
    font-size: clamp(1.45rem, 3vw, 2.2rem);
    line-height: 1.25;
    overflow-wrap: anywhere;
}

.rsc-dash-status {
    margin: 6px 0 0;
    color: var(--gray-darker);
    font-weight: var(--fw-bold);
}

.rsc-dash-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: var(--spacing-sm);
}

.rsc-stats-strip {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.rsc-stat {
    min-height: 92px;
    display: grid;
    place-items: center;
    align-content: center;
    gap: 4px;
    padding: var(--spacing-md);
    border: 1px solid var(--gray-light);
    border-radius: var(--border-radius);
    background: var(--gray-lightest);
}

.rsc-stat strong {
    color: var(--primary-color);
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    line-height: 1;
}

.rsc-stat span {
    color: var(--gray-darker);
    font-size: 0.88rem;
    font-weight: var(--fw-bold);
}

.rsc-mode-pane {
    animation: rsc-fade-in 0.2s ease;
}

@keyframes rsc-fade-in {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

.rsc-qr-block {
    display: grid;
    justify-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-xl);
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius-large);
    background: color-mix(in srgb, var(--primary-color) 7%, var(--white));
    text-align: center;
}

.rsc-qr-block canvas {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    background: var(--white);
    box-shadow: var(--shadow-small);
}

.rsc-student-list {
    display: grid;
    gap: var(--spacing-sm);
}

.rsc-student-row {
    display: grid;
    grid-template-columns: 56px minmax(0, 1fr) auto;
    gap: var(--spacing-md);
    align-items: center;
    min-height: 72px;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--gray-light);
    border-radius: var(--border-radius);
    background: var(--white);
    box-shadow: var(--shadow-small);
}

.rsc-student-row.is-done {
    border-color: color-mix(in srgb, var(--success-color) 45%, var(--gray-light));
    background: color-mix(in srgb, var(--success-color) 10%, var(--white));
}

.rsc-student-number {
    width: 48px;
    height: 48px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: var(--primary-color);
    color: var(--white);
    font-size: 1.2rem;
    font-weight: var(--fw-black);
}

.rsc-student-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 6px var(--spacing-sm);
    align-items: center;
    margin-bottom: 8px;
    color: var(--gray-darker);
    font-size: 0.92rem;
}

.rsc-student-meta strong {
    color: var(--gray-darkest);
}

.rsc-progress {
    height: 10px;
    overflow: hidden;
    border-radius: var(--border-radius-pill);
    background: var(--gray-light);
}

.rsc-progress span {
    display: block;
    height: 100%;
    border-radius: inherit;
    background: var(--success-color);
    transition: width 0.25s ease;
}

.rsc-student-counts {
    display: inline-flex;
    gap: 4px;
}

.rsc-student-counts span {
    min-width: 34px;
    min-height: 34px;
    display: inline-grid;
    place-items: center;
    border-radius: var(--border-radius-pill);
    color: var(--white);
    font-weight: var(--fw-black);
}

.rsc-student-counts .good { background: var(--success-color); }
.rsc-student-counts .retry { background: var(--primary-color); }
.rsc-student-counts .hard { background: var(--warning-color); }

.is-stale {
    color: var(--warning-color);
    font-weight: var(--fw-bold);
}

.rsc-empty {
    padding: var(--spacing-xl);
    color: var(--gray-dark);
    text-align: center;
}

.rsc-student-join {
    max-width: 520px;
    margin: 0 auto var(--spacing-lg);
}

.rsc-student-join h2 {
    margin-top: 0;
    color: var(--primary-color);
}

@media (max-width: 700px) {
    body {
        overflow-x: hidden;
        padding: var(--spacing-sm);
    }

    .site-wrapper,
    .container {
        display: block;
        width: 100%;
        min-width: 0;
        max-width: 100%;
    }

    header {
        padding: 16px 16px 22px;
    }

    .brand-logo {
        max-width: 78vw;
        max-height: 96px;
    }

    header h1 {
        display: block;
        width: 100%;
        font-size: 1.32rem;
        line-height: 1.35;
        word-break: keep-all;
    }

    header h1 i {
        margin-right: 0.45rem;
    }

    .subtitle {
        max-width: 100%;
        font-size: 0.92rem;
        line-height: 1.55;
        word-break: keep-all;
    }

    .rsc-author-grid,
    .rsc-result-buttons {
        grid-template-columns: 1fr;
    }

    .rsc-actions {
        display: grid;
        grid-template-columns: 1fr;
    }

    .rsc-actions .btn {
        width: 100%;
    }

    .rsc-practice-head {
        flex-direction: column;
    }

    .rsc-link-row {
        grid-template-columns: 1fr;
    }

    .rsc-link-row .btn {
        width: 100%;
    }

    .rsc-dash-head {
        flex-direction: column;
    }

    .rsc-dash-actions,
    .rsc-dash-actions .btn {
        width: 100%;
    }

    .rsc-stats-strip {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .rsc-student-row {
        grid-template-columns: 48px minmax(0, 1fr);
    }

    .rsc-student-counts {
        grid-column: 1 / -1;
        justify-content: flex-end;
    }

    .rsc-reading-text {
        font-size: 1.55rem;
    }
}