a {
    color: var(--color-primary);
}

button,
.button-link {
    display: inline-flex;
    min-height: 44px;
    align-items: center;
    justify-content: center;
    border: 0;
    border-radius: var(--radius-s);
    padding: var(--space-3) var(--space-4);
    background: var(--color-primary);
    color: var(--color-primary-contrast);
    font: inherit;
    text-decoration: none;
    cursor: pointer;
}

button:not([class]):hover,
.button-link:not(.secondary, .secondary-link, .danger, .button-danger, .button-secondary):hover {
    background: var(--color-primary-hover);
}

button.secondary,
.button-link.secondary,
.button-link.secondary-link {
    border: 1px solid var(--color-border-strong);
    background: var(--color-surface);
    color: var(--color-text);
}

.danger,
.button-danger {
    background: var(--color-error);
    color: var(--color-on-error);
}

button.secondary {
    border: 1px solid var(--color-border-strong);
    background: var(--color-surface);
    color: var(--color-text);
}

input {
    width: 100%;
    min-height: 44px;
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-s);
    padding: 0.55rem;
    background: var(--color-surface);
    color: var(--color-text);
    font: inherit;
}

input[type="checkbox"],
input[type="radio"] {
    width: 1.25rem;
    min-height: 1.25rem;
    flex: 0 0 auto;
}

.checkbox-row {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    min-height: 44px;
}

.break-anywhere {
    overflow-wrap: anywhere;
}

.checkbox-label,
.exam-task-option {
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
}

.exam-task-list {
    display: grid;
    gap: 0.4rem;
    max-height: 18rem;
    overflow-y: auto;
    border: 1px solid var(--color-border);
    padding: 0.75rem;
}

.exam-task-option {
    min-height: 44px;
    align-items: center;
}

.exam-feedback-item {
    margin: 1rem 0;
    border-top: 1px solid var(--color-border);
    padding-top: 0.75rem;
}

textarea {
    width: 100%;
    min-height: 7rem;
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-s);
    padding: 0.55rem;
    background: var(--color-surface);
    color: var(--color-text);
    font: inherit;
}

select {
    width: 100%;
    min-height: 44px;
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-s);
    padding: 0.55rem;
    background: var(--color-surface);
    color: var(--color-text);
    font: inherit;
}

label {
    display: block;
    margin: 0.75rem 0 0.3rem;
}

.site-header {
    padding: 1rem;
    background: var(--color-primary);
}

.site-header a {
    color: var(--color-primary-contrast);
    font-weight: 700;
    text-decoration: none;
}

.page {
    width: min(100% - 1.5rem, 56rem);
    margin: 1.25rem auto;
}

.panel,
.class-card,
.student-card {
    margin: 1rem 0;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-m);
    padding: var(--space-4);
    background: var(--color-surface);
    box-shadow: var(--shadow-1);
}

.report-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin: 1rem 0;
}

.table-scroll {
    overflow-x: auto;
    overscroll-behavior-inline: contain;
}

.report-table {
    width: 100%;
    border-collapse: collapse;
}

.report-table th,
.report-table td {
    border-bottom: 1px solid var(--color-border);
    padding: 0.65rem;
    text-align: left;
    vertical-align: top;
}

.report-table th {
    background: var(--color-accent);
}

.report-table td span {
    display: block;
    margin-top: 0.2rem;
}

.status-critical {
    font-weight: 700;
}

.status-ok {
    background: var(--color-success-bg);
}

.chart-list {
    display: grid;
    gap: 0.55rem;
    list-style: none;
    padding: 0;
}

.chart-list li {
    display: grid;
    grid-template-columns: minmax(6rem, 9rem) 1fr 3.5rem;
    align-items: center;
    gap: 0.6rem;
}

.chart-track {
    display: block;
    height: 0.9rem;
    border-radius: var(--radius-s);
    background: var(--color-border);
    overflow: hidden;
}

.chart-track progress {
    width: 100%;
    accent-color: var(--color-primary);
}

.task-preview-list .level-1 { padding-inline-start: var(--space-3); }
.task-preview-list .level-2 { padding-inline-start: var(--space-4); }
.task-preview-list .level-3 { padding-inline-start: var(--space-5); }
.task-preview-list .level-4,
.task-preview-list .level-5,
.task-preview-list .level-6,
.task-preview-list .level-7,
.task-preview-list .level-8,
.task-preview-list .level-9,
.task-preview-list .level-10 { padding-inline-start: var(--space-6); }

@media (max-width: 40rem) {
    .chart-list li {
        grid-template-columns: 1fr 3.5rem;
    }

    .chart-track {
        grid-column: 1 / -1;
        grid-row: 2;
    }
}

.narrow {
    max-width: 28rem;
    margin: 2rem auto;
}

.narrow button[type="submit"] {
    width: 100%;
    margin-top: 1rem;
}

.page-heading,
.inline-form,
.student-card,
.print-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
}

.page-heading {
    justify-content: space-between;
}

.inline-form input {
    flex: 1 1 14rem;
}

.class-card h3 {
    margin-top: 0;
}

.account-form {
    display: grid;
    gap: 0.75rem;
}

.account-form label {
    margin: 0;
}

.account-row,
.topic-row {
    margin: 0.75rem 0;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-s);
    padding: 0.8rem;
    background: var(--color-surface);
}

.topic-list,
.account-list {
    display: grid;
    gap: 0.5rem;
}

.topic-list {
    padding-left: 1.25rem;
}

.topic-progress {
    margin: 0.25rem 0 0.75rem;
    color: var(--color-muted);
}

.topic-row {
    display: flex;
    align-items: flex-start;
    gap: 0.7rem;
    cursor: pointer;
}

.topic-row input[type="checkbox"] {
    width: 1.4rem;
    height: 1.4rem;
    min-height: 44px;
    flex: 0 0 1.4rem;
    margin: 0;
}

.topic-row span,
.topic-row small {
    display: block;
}

.topic-row small {
    margin-top: 0.35rem;
}

.table-scroll {
    max-width: 100%;
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th,
td {
    padding: 0.55rem;
    border-bottom: 1px solid var(--color-border);
    text-align: left;
}

.student-list {
    display: grid;
    gap: 0.5rem;
}

.task-filters,
.task-form {
    display: grid;
    gap: 0.75rem;
}

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

.task-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.task-actions form {
    display: inline-flex;
}

.secondary-link {
    border: 1px solid var(--color-border-strong);
    background: var(--color-surface);
    color: var(--color-text);
}

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

.solution-line {
    display: grid;
    gap: 0.35rem;
    margin: 0.75rem 0;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-s);
    padding: 0.8rem;
}

.help-text {
    margin-top: 0;
    color: var(--color-muted);
}

.task-import-actions {
    display: grid;
    gap: 0.6rem;
    margin: 1rem 0;
}

.task-import-actions label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.task-import-actions input[type="radio"] {
    width: 1.4rem;
    min-height: 44px;
}

.status-label {
    display: inline-block;
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-s);
    padding: 0.2rem 0.45rem;
    font-weight: 700;
}

.import-errors {
    padding-left: 1.3rem;
}

.import-errors li {
    margin: 0.5rem 0;
}

.student-card {
    justify-content: space-between;
}

.notice,
.error {
    border-radius: var(--radius-s);
    padding: 0.8rem;
    background: var(--color-success-bg);
    color: var(--color-success);
}

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

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
}

.access-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.7rem;
}

.access-card {
    min-height: 7rem;
    border: 1px dashed var(--color-border-strong);
    padding: 0.7rem;
    break-inside: avoid;
}

.access-card h2 {
    margin-top: 0;
}

.exercise-form,
.answer-entry,
.answer-drop-grid,
.feedback-actions {
    display: grid;
    gap: 0.75rem;
}

.balance-sheet-form,
.balance-sheet-side {
    display: grid;
    gap: 0.75rem;
}

.balance-sheet-answer-item {
    min-width: 0;
    margin: 0.6rem 0;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-s);
    padding: 0.8rem;
    background: var(--color-surface);
}

.balance-sheet-answer-item label {
    margin-top: 0.5rem;
}

.balance-sheet-live-total {
    margin: 0.25rem 0;
    font-weight: 700;
}

.balance-sheet-balance-status {
    min-height: 1.5rem;
    font-weight: 700;
}

.answer-entry,
.solution-line {
    min-width: 0;
}

.answer-line {
    margin: 0.5rem 0;
}

.answer-drop-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.answer-side h2 {
    font-size: var(--font-heading);
    margin-bottom: 0.4rem;
}

.account-pool,
.answer-lines,
.account-suggestions {
    display: grid;
    gap: 0.5rem;
    margin: 0;
    padding: 0.5rem;
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-s);
    list-style: none;
}

.account-pool,
.answer-lines {
    max-height: 18rem;
    min-height: 5rem;
    overflow-y: auto;
}

.answer-lines {
    background: var(--color-bg);
}

.draggable-account,
.answer-line {
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-s);
    padding: 0.6rem;
    background: var(--color-surface);
}

.draggable-account {
    touch-action: pan-y;
}

.answer-line {
    display: grid;
    gap: 0.25rem;
    min-width: 0;
}

.account-combobox {
    position: relative;
}

.account-combobox input[type="hidden"] {
    display: none;
}

.account-suggestions {
    position: absolute;
    z-index: 2;
    top: 100%;
    right: 0;
    left: 0;
    max-height: 15rem;
    overflow-y: auto;
    background: var(--color-surface);
    box-shadow: var(--shadow-2);
}

.account-suggestions[hidden] {
    display: none;
}

.account-suggestions button {
    width: 100%;
    min-height: 44px;
    justify-content: flex-start;
    background: var(--color-surface);
    color: var(--color-text);
    text-align: left;
}

.account-suggestions button:hover,
.account-suggestions button:focus-visible,
.account-suggestions [aria-selected="true"] button {
    background: var(--color-accent);
}

.account-suggestions-empty {
    padding: 0.5rem;
}

.account-assign-actions,
.feedback-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.account-assign-actions {
    margin-top: 0.5rem;
}

.account-assign-actions button {
    flex: 1 1 9rem;
}

.answer-lines:empty::after {
    content: attr(aria-label);
    color: var(--color-muted);
}

.dragdrop-account-options[hidden] {
    display: none;
}

.available-account-list {
    display: grid;
    gap: 0.25rem;
    max-height: 18rem;
    overflow-y: auto;
    padding: 0.5rem;
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-s);
}

.available-account-option {
    display: grid;
    grid-template-columns: 1.5rem minmax(0, 1fr);
    align-items: center;
    gap: 0.5rem;
    min-height: 44px;
    margin: 0;
}

.available-account-option[hidden] {
    display: none;
}

.answer-line label {
    margin: 0.25rem 0 0;
}

.available-account-option input[type="checkbox"] {
    width: 1.25rem;
    min-height: 44px;
    margin: 0;
}

.feedback-actions form {
    flex: 1 1 14rem;
}

.feedback-actions button {
    width: 100%;
}

.feedback-result {
    display: grid;
    gap: 0.4rem;
    padding: 0.8rem;
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-s);
}

.feedback-errors li {
    margin: 0.45rem 0;
}

.exercise-hint {
    margin: 1rem 0;
    border-left: var(--space-1) solid var(--color-border-strong);
    padding: 0.6rem 0.8rem;
    background: var(--color-bg);
}

.exercise-hint summary {
    min-height: 44px;
    display: flex;
    align-items: center;
    cursor: pointer;
    font-weight: 700;
}

@media (max-width: 36rem) {
    .access-grid {
        grid-template-columns: 1fr;
    }

    .student-card {
        align-items: stretch;
        flex-direction: column;
    }

    .account-row .account-form {
        grid-template-columns: 1fr;
    }

    .answer-drop-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .account-assign-actions {
        flex-direction: column;
    }
}

.card-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4);
    margin-block: var(--space-4);
}

.card,
.card-link {
    display: block;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-l);
    padding: var(--space-4);
    background: var(--color-surface);
    box-shadow: var(--shadow-1);
}

.card-link {
    color: var(--color-text);
    text-decoration: none;
    transition: transform var(--time-short), box-shadow var(--time-short);
}

.card-link:hover,
.card-link:focus-visible {
    transform: translateY(-2px);
    box-shadow: var(--shadow-2);
}

.card-link svg {
    width: 1.75rem;
    height: 1.75rem;
    color: var(--color-primary);
}

.card-link h2 {
    margin-block: var(--space-2);
}

.card-link p,
.muted {
    color: var(--color-muted);
}

.button-secondary {
    background: var(--color-surface);
    color: var(--color-text);
    border: 1px solid var(--color-border-strong);
}

.button-danger {
    background: var(--color-error);
}

.form-section {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-m);
    padding: var(--space-4);
    background: var(--color-surface);
}

.form-section legend {
    padding-inline: var(--space-2);
    font-weight: 700;
}

.empty-state {
    border: 1px dashed var(--color-border-strong);
    border-radius: var(--radius-m);
    padding: var(--space-5);
    text-align: center;
    background: var(--color-surface);
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    border-radius: var(--radius-pill);
    padding: var(--space-1) var(--space-2);
    background: var(--color-info-bg);
    color: var(--color-info);
    font-size: var(--font-small);
    font-weight: 700;
}

.progress {
    width: 100%;
    height: 0.75rem;
    accent-color: var(--color-primary);
}

.balance-sheet-answer-item.level-1 { margin-inline-start: var(--space-3); }
.balance-sheet-answer-item.level-2 { margin-inline-start: var(--space-4); }
.balance-sheet-answer-item.level-3 { margin-inline-start: var(--space-5); }
.balance-sheet-answer-item.level-4 { margin-inline-start: var(--space-6); }
.balance-sheet-answer-item.level-5,
.balance-sheet-answer-item.level-6,
.balance-sheet-answer-item.level-7,
.balance-sheet-answer-item.level-8,
.balance-sheet-answer-item.level-9,
.balance-sheet-answer-item.level-10 { margin-inline-start: var(--space-6); }

.chart-track progress {
    display: block;
    width: 100%;
    height: 0.9rem;
}