:root {
    --bg: #ffffff;
    --surface: #ffffff;
    --text: #202124;
    --muted: #6b7280;
    --line: #d9dee6;
    --accent: #789889;
    --accent-dark: #789889;
    --warn: #5f551f;
    --warning-bg: #c0b256;
    --warning-border: #a89a3f;
    --bad: #d58478;
    --ok: #207044;
    --markdown-image-height: 240px;
    --inline-control-hit-size: 30px;
    --inline-glyph-size: 1em;
}

.test-question-editor-list {
    display: grid;
    gap: 18px;
}

.test-question-editor-item {
    border-bottom: 1px solid var(--line);
    min-width: 0;
    padding-bottom: 18px;
}

.test-question-editor-head {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.test-question-editor-head > strong {
    flex: 1 1 180px;
}

.test-question-editor-head label {
    align-items: center;
    display: flex;
    gap: 6px;
}

.test-question-statement {
    margin: 14px 0;
    min-width: 0;
}

.test-question-readonly-fields {
    display: grid;
    gap: 12px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin: 0;
}

.test-question-readonly-fields > div {
    border-top: 1px solid var(--line);
    min-width: 0;
    padding-top: 10px;
}

.test-question-readonly-fields dt {
    color: var(--muted);
    font-size: 13px;
}

.test-question-readonly-fields dd {
    margin: 4px 0 0;
    overflow-wrap: anywhere;
}

@media (max-width: 700px) {
    .test-question-readonly-fields {
        grid-template-columns: 1fr;
    }

    .test-question-editor-head > strong {
        flex-basis: 100%;
        order: -1;
    }
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.5;
}

a {
    color: var(--accent-dark);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.topbar {
    align-items: center;
    background: var(--surface);
    border-bottom: 1px solid var(--line);
    display: flex;
    gap: 28px;
    justify-content: space-between;
    min-height: 58px;
    padding: 0 28px;
    position: sticky;
    top: 0;
    z-index: 10;
}

.topbar-nav {
    margin-left: auto;
}

.topbar-nav a {
    color: var(--text);
    font-size: 18px;
    font-weight: 700;
}

.mobile-menu-toggle {
    display: none;
}

.mobile-menu-icon {
    display: grid;
    gap: 5px;
    width: 24px;
}

.mobile-menu-icon span {
    background: currentColor;
    border-radius: 2px;
    display: block;
    height: 3px;
    transition: transform .18s ease, opacity .18s ease;
    width: 100%;
}

.brand {
    align-items: center;
    color: var(--text);
    display: inline-flex;
    font-size: 18px;
    font-weight: 700;
    gap: 10px;
}

.site-header-brand {
    flex: 0 0 auto;
    font-size: 18px;
    letter-spacing: 0;
    line-height: 1.15;
    max-width: 360px;
    text-align: left;
    text-transform: uppercase;
}

.site-header-brand:hover {
    text-decoration: none;
}

.brand-icon {
    border: 1px solid var(--line);
    border-radius: 50%;
    display: block;
    flex: 0 0 auto;
}

.nav {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.account-nav {
    background: #f7f9fb;
    border-bottom: 1px solid var(--line);
    justify-content: center;
    padding: 10px 28px;
}

.account-nav a {
    color: var(--text);
    font-weight: 700;
}

.account-mode-switch {
    align-items: center;
    background: #e9edf4;
    border-radius: 9px;
    display: inline-flex;
    gap: 3px;
    margin-left: 12px;
    padding: 3px;
}

.account-mode-switch form {
    margin: 0;
}

.account-mode-switch button {
    background: transparent;
    border: 0;
    color: var(--muted);
    min-height: 32px;
    padding: 5px 10px;
}

.account-mode-switch button.active {
    background: var(--surface);
    box-shadow: 0 1px 4px rgba(31, 42, 35, 0.14);
    color: var(--text);
}

.logout-form {
    margin: 0;
}

.logout-form button,
.button,
button {
    background: var(--accent);
    border: 1px solid var(--accent);
    border-radius: 6px;
    color: #ffffff;
    cursor: pointer;
    display: inline-block;
    font: inherit;
    min-height: 38px;
    padding: 8px 12px;
}

.button:hover,
button:hover {
    text-decoration: none;
}

button:disabled {
    opacity: 0.55;
    cursor: default;
}

.secondary-button {
    background: #ffffff;
    border-color: var(--accent);
    color: var(--accent-dark);
}

.danger-button {
    background: var(--bad);
    border-color: var(--bad);
    color: #ffffff;
}

.disabled-button {
    background: #eef1f5;
    border-color: var(--line);
    color: var(--muted);
    cursor: default;
}

.primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #ffffff;
}

.page {
    margin: 0 auto;
    max-width: 1180px;
    padding: 28px;
}

.site-footer {
    align-items: center;
    color: var(--muted);
    display: flex;
    font-size: 13px;
    gap: 16px;
    justify-content: space-between;
    margin: 0 auto;
    max-width: 1180px;
    padding: 0 28px 24px;
}

.copy-toast {
    background: rgba(31, 42, 35, 0.92);
    border-radius: 8px;
    box-shadow: 0 18px 42px rgba(31, 42, 35, 0.18);
    color: #ffffff;
    font-size: 18px;
    left: 50%;
    max-width: min(420px, calc(100vw - 48px));
    opacity: 0;
    padding: 14px 20px;
    pointer-events: none;
    position: fixed;
    text-align: center;
    top: 50%;
    transform: translate(-50%, -50%) scale(0.98);
    transition: opacity 0.18s ease, transform 0.18s ease;
    z-index: 1000;
}

.copy-toast.is-visible {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}

.copy-toast.is-fading {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.98);
    transition-duration: 1s;
}

.public-page-head {
    margin: 18px auto 24px;
    max-width: 940px;
}

.public-page-head h1 {
    font-family: Georgia, "Times New Roman", serif;
    font-size: 52px;
    font-weight: 400;
    line-height: 1.1;
    margin: 0;
}

.news-admin-panel {
    margin: 0 auto 24px;
    max-width: 940px;
}

.news-editor {
    margin-top: 14px;
}

.news-editor textarea {
    min-height: 180px;
}

.news-feed {
    display: grid;
    gap: 22px;
    margin: 0 auto;
    max-width: 940px;
    min-width: 0;
    width: 100%;
}

.news-card {
    border: 0;
    border-radius: 0;
    min-width: 0;
    padding: 0;
    width: 100%;
}

.news-card.is-draft {
    border-style: dashed;
}

.news-card-head {
    align-items: stretch;
    border-bottom: 1px solid var(--line);
    display: grid;
    grid-template-columns: minmax(0, 1fr) 260px;
    min-width: 0;
}

.news-card-head > div,
.news-card-head time {
    padding: 14px 16px;
}

.news-card-head time {
    color: var(--muted);
    text-align: right;
}

.news-card h2 {
    font-family: Georgia, "Times New Roman", serif;
    font-size: 30px;
    font-weight: 400;
    line-height: 1.2;
    margin: 0;
}

.news-preview,
.news-body {
    padding: 18px 16px;
}

.news-preview.markdown,
.news-body.markdown {
    max-width: 100%;
    min-width: 0;
    overflow-x: visible;
    width: 100%;
}

.news-preview.is-collapsed {
    max-height: 460px;
    overflow: hidden;
}

.news-card-actions {
    align-items: center;
    border-top: 1px solid var(--line);
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: flex-end;
    padding: 12px 16px;
}

.news-expand-link {
    background: transparent;
    border: 0;
    color: var(--accent-dark);
    font-style: italic;
    margin-right: auto;
    min-height: 0;
    padding: 0;
}

.share-button {
    background: var(--accent);
    border-color: var(--accent);
}

.icon-actions {
    align-items: center;
    display: inline-flex;
    flex: 0 0 auto;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: flex-end;
}

.news-icon-actions {
    margin-left: auto;
}

.news-detail {
    margin: 0 auto;
    max-width: 860px;
}

.news-detail-head {
    border-bottom: 1px solid var(--line);
    margin-bottom: 20px;
    padding-bottom: 16px;
}

.news-detail-head h1 {
    font-family: Georgia, "Times New Roman", serif;
    font-size: 46px;
    font-weight: 400;
    line-height: 1.12;
    margin: 16px 0 8px;
}

.attachment-snippet-list {
    display: grid;
    gap: 12px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.attachment-snippet-list li {
    border: 1px solid var(--line);
    border-radius: 6px;
    display: grid;
    gap: 8px;
    padding: 12px;
}

.attachment-snippet-list code {
    background: #f5f7fa;
    border: 1px solid var(--line);
    border-radius: 4px;
    display: block;
    overflow-x: auto;
    padding: 8px;
}

.news-pending-attachments {
    display: grid;
    gap: 8px;
    list-style: none;
    margin: 10px 0 0;
    padding: 0;
}

.news-pending-attachments li {
    align-items: center;
    border: 1px solid var(--line);
    border-radius: 6px;
    display: grid;
    gap: 10px;
    grid-template-columns: 64px minmax(0, 1fr) auto;
    padding: 10px;
}

.pending-file-thumbnail {
    background: #f7faf9 center / 42px 50px no-repeat;
    border: 1px solid #9eafa8;
    border-radius: 6px;
    box-sizing: border-box;
    display: block;
    height: 64px;
    object-fit: contain;
    width: 64px;
}

.pending-file-thumbnail-pdf { background-image: url("icons/files/pdf.597e39587f4d.svg"); }
.pending-file-thumbnail-word { background-image: url("icons/files/word.652073724d08.svg"); }
.pending-file-thumbnail-excel { background-image: url("icons/files/excel.c3d180166295.svg"); }
.pending-file-thumbnail-file { background-image: url("icons/files/file.47e9eab14595.svg"); }

.news-pending-attachments code {
    background: #f5f7fa;
    border: 1px solid var(--line);
    border-radius: 4px;
    display: block;
    margin-top: 6px;
    overflow-x: auto;
    padding: 6px 8px;
}

.news-pending-remove {
    border-radius: 50%;
    font-size: 20px;
    height: 30px;
    line-height: 1;
    min-height: 30px;
    padding: 0;
    width: 30px;
}

.embedded-video {
    aspect-ratio: 16 / 9;
    background: #111827;
    border-radius: 6px;
    margin: 16px 0;
    overflow: hidden;
    width: 100%;
}

.embedded-video iframe {
    border: 0;
    height: 100%;
    width: 100%;
}

.placeholder-page {
    align-items: center;
    display: flex;
    justify-content: center;
    margin: 0 auto;
    max-width: 980px;
    min-height: min(70vh, 720px);
    padding: 32px 0;
}

.placeholder-page img {
    display: block;
    height: auto;
    max-width: min(420px, 82vw);
}

.contacts-head {
    align-items: center;
    display: flex;
    gap: 16px;
    justify-content: space-between;
}

.contacts-layout {
    display: grid;
    gap: 28px;
    grid-template-columns: minmax(220px, 3fr) minmax(300px, 5fr);
    margin: 0 auto;
    max-width: 940px;
}

.contact-photo-card {
    align-self: start;
    aspect-ratio: 3 / 4;
    background: #f7f8f6;
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: 0 8px 18px rgba(32, 33, 36, 0.08);
    margin: 0;
    padding: 8px;
    overflow: hidden;
}

.contact-photo {
    border-radius: 5px;
    display: block;
    height: 100%;
    object-fit: cover;
    object-position: center;
    width: 100%;
}

.contact-info-card {
    align-content: start;
    align-items: flex-end;
    align-self: stretch;
    display: flex;
    flex-direction: column;
    gap: 14px;
    justify-items: end;
    padding: 10px 0;
    text-align: right;
}

.contact-link {
    align-items: center;
    color: var(--text);
    display: inline-flex;
    flex-direction: row-reverse;
    font-size: 20px;
    gap: 12px;
    justify-content: flex-start;
}

.contact-link:hover {
    color: var(--accent-dark);
    text-decoration: none;
}

.contact-icon {
    border-radius: 50%;
    display: block;
    flex: 0 0 auto;
    height: 34px;
    width: 34px;
}

.contact-mail-icon {
    align-items: center;
    background: var(--accent);
    color: #ffffff;
    display: inline-flex;
    font-weight: 700;
    justify-content: center;
}

.contact-profi-widget {
    --profi-widget-scale: 1;
    display: flex;
    justify-content: flex-end;
    margin-top: auto;
    min-height: calc(100px * var(--profi-widget-scale));
    overflow: hidden;
    width: 100%;
}

.contact-profi-widget .profi-widget {
    transform: scale(var(--profi-widget-scale));
    transform-origin: right bottom;
}

.contact-body {
    border-top: 1px solid var(--line);
    grid-column: 1 / -1;
    padding-top: 22px;
}

.test-link-tools {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.test-link-tools code {
    overflow-wrap: anywhere;
    white-space: normal;
}

.teacher-tests-table {
    min-width: 0;
    table-layout: auto;
}

.teacher-tests-table .test-title-cell {
    min-width: 180px;
}

.teacher-tests-table th:last-child,
.teacher-tests-table td:last-child {
    text-align: right;
}

.teacher-test-actions {
    align-items: center;
    justify-content: flex-end;
    min-width: 168px;
}

.teacher-test-actions .inline-form {
    align-items: center;
    display: inline-flex;
    line-height: 1;
}

.category-main {
    min-width: 0;
}

.category-actions {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: flex-end;
}

.category-actions .auto-submit-form label {
    align-items: center;
    display: inline-flex;
    gap: 8px;
}

.category-actions select {
    max-width: 220px;
}

.task-category-title-row h2 {
    margin: 0;
}

.task-category-tree {
    margin-top: 18px;
}

.task-collection-row .inline-form,
.material-head-actions .inline-form {
    align-items: center;
    display: inline-flex;
    line-height: 1;
}

.collection-folder-form label {
    align-items: center;
    display: flex;
    gap: 10px;
}

.collection-folder-form select {
    max-width: min(420px, 100%);
}

.task-category-detail-title {
    flex: 1 1 auto;
    min-width: 0;
}

.task-category-detail-title h1,
.task-category-detail-title p {
    margin: 0;
}

.test-landing {
    align-items: center;
    display: flex;
    justify-content: center;
    min-height: min(64vh, 620px);
}

.test-landing-card {
    border: 1px solid var(--line);
    border-radius: 8px;
    max-width: 720px;
    padding: 32px;
    width: 100%;
}

.test-landing-card h1 {
    font-size: 34px;
    line-height: 1.2;
    margin: 4px 0 14px;
}

.test-landing-actions {
    margin-top: 18px;
}

.pagination {
    align-items: center;
    display: flex;
    gap: 12px;
    justify-content: center;
    margin: 24px auto 0;
    max-width: 940px;
}

.footer-logout-form {
    margin: 0;
}

.footer-logout-form button {
    background: transparent;
    border: 0;
    color: var(--bad);
    min-height: 0;
    padding: 0;
}

.footer-logout-form button:hover {
    text-decoration: underline;
}

.task-basket {
    --task-basket-compact: 30px;
    --task-basket-gap: 8px;
    --task-basket-padding: 12px;
    bottom: 16px;
    position: fixed;
    right: 16px;
    width: min(25rem, calc(100vw - 32px));
    z-index: 60;
}

.task-basket:not(.has-items) {
    display: none;
}

.task-basket-toggle {
    background: var(--accent);
    color: #fff;
    font-size: .92rem;
    min-height: 38px;
    padding: 8px 12px;
    width: 100%;
}

.task-basket-panel {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 9px;
    bottom: calc(100% + var(--task-basket-gap));
    box-sizing: border-box;
    box-shadow: 0 4px 22px rgba(0, 0, 0, .2);
    display: flex;
    flex-direction: column;
    font-size: .92rem;
    gap: var(--task-basket-gap);
    max-height: 70vh;
    overflow: visible;
    padding: var(--task-basket-padding);
    position: absolute;
    right: 0;
    width: 100%;
}

.task-basket-panel[hidden] {
    display: none;
}

.task-basket-head {
    align-items: center;
    display: flex;
    gap: var(--task-basket-gap);
    justify-content: space-between;
}

.task-basket-list {
    list-style: none;
    margin: 0;
    max-height: 40vh;
    overflow: auto;
    padding: 0 12px 0 0;
    scrollbar-gutter: stable;
}

.task-basket-list li {
    align-items: center;
    border-bottom: 1px solid #edf1ef;
    display: grid;
    gap: var(--task-basket-gap);
    grid-template-columns: var(--task-basket-compact) minmax(0, 1fr) var(--task-basket-compact);
    padding: var(--task-basket-gap) 0;
}

.task-basket-list a {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.task-basket-status {
    text-align: center;
}

.task-basket-remove {
    align-items: center;
    background: var(--bad);
    border: 0;
    border-radius: 6px;
    color: #fff;
    display: flex;
    height: var(--task-basket-compact);
    justify-content: center;
    min-height: var(--task-basket-compact);
    padding: 0;
    width: var(--task-basket-compact);
}

.task-basket form {
    flex: 1 1 auto;
    margin: 0;
}

.task-basket form button {
    width: 100%;
}

.task-basket-sort-actions {
    display: flex;
    gap: var(--task-basket-gap);
}

.task-basket-sort-actions button {
    align-items: center;
    background: var(--accent);
    border: 0;
    border-radius: 6px;
    color: #fff;
    display: inline-flex;
    font-size: 0;
    height: var(--task-basket-compact);
    justify-content: center;
    line-height: 1;
    max-height: var(--task-basket-compact);
    max-width: var(--task-basket-compact);
    min-height: var(--task-basket-compact);
    min-width: var(--task-basket-compact);
    padding: 0;
    position: relative;
    width: var(--task-basket-compact);
}

.task-basket-sort-actions button::before {
    background: #fff;
    content: "";
    height: 6px;
    left: 50%;
    position: absolute;
    transform: translateX(-50%);
    width: 8px;
}

.task-basket-sort-actions button::after {
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    content: "";
    height: 0;
    left: 50%;
    position: absolute;
    transform: translateX(-50%);
    width: 0;
}

.task-basket-sort-actions button[data-task-basket-sort="asc"]::before {
    top: 16px;
}

.task-basket-sort-actions button[data-task-basket-sort="asc"]::after {
    border-bottom: 8px solid #fff;
    top: 8px;
}

.task-basket-sort-actions button[data-task-basket-sort="desc"]::before {
    top: 8px;
}

.task-basket-sort-actions button[data-task-basket-sort="desc"]::after {
    border-top: 8px solid #fff;
    top: 14px;
}

.task-basket-primary-actions {
    align-items: stretch;
    border-top: 1px solid var(--line);
    display: flex;
    gap: var(--task-basket-gap);
    justify-content: space-between;
    padding-top: var(--task-basket-padding);
}

.task-basket-clear {
    background: var(--bad);
    border-color: var(--bad);
    color: #fff;
    flex: 0 0 auto;
}

.test-question-sort-actions {
    display: flex;
    gap: 8px;
    margin: 0 0 10px;
}

.test-question-sort-actions .button {
    flex: 1;
    min-height: 32px;
    padding: 5px 8px;
}

.narrow {
    margin: 48px auto;
    max-width: 520px;
}

.page-head,
.section-head {
    align-items: flex-start;
    display: flex;
    gap: 18px;
    justify-content: space-between;
    margin-bottom: 18px;
}

.page-head h1,
.section-head h2 {
    margin: 0;
}

.page-head p {
    color: var(--muted);
    margin: 4px 0 0;
}

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

.student-add-menu {
    position: relative;
    z-index: 20;
}

.student-add-menu > button {
    cursor: pointer;
}

.student-add-menu-panel {
    position: absolute;
    top: calc(100% + 7px);
    right: 0;
    display: grid;
    min-width: 190px;
    padding: 6px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: var(--surface);
    box-shadow: 0 12px 30px rgba(32, 33, 36, .14);
}

.student-add-menu-panel[hidden] {
    display: none;
}

.student-add-menu-panel a {
    padding: 10px 12px;
    border-radius: 8px;
    color: var(--text);
    font-size: 14px;
    font-weight: 400;
    text-decoration: none;
    text-align: center;
    white-space: nowrap;
}

.student-add-menu-panel a:hover {
    color: var(--accent);
    background: rgba(120, 152, 137, .12);
}

.inline-form {
    display: inline;
    margin: 0;
}

.folder-create-form {
    align-items: end;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.folder-create-form label {
    display: grid;
    gap: 4px;
}

.folder-create-form label span,
.folder-parent-control .muted {
    font-size: 13px;
}

.auto-submit-form select,
.folder-create-form select,
.folder-create-form input {
    min-width: 190px;
}

.active-link {
    font-weight: 700;
}

.work-folder-section {
    border-top: 1px solid var(--line);
    margin-left: calc(var(--folder-depth, 0) * 18px);
    margin-top: 18px;
    padding-top: 18px;
}

.root-folder-section {
    margin-left: 0;
}

.work-folder-section h3 {
    margin: 0 0 12px;
}

.work-folder-summary {
    align-items: center;
    cursor: pointer;
    display: flex;
    font-size: 20px;
    font-weight: 700;
    gap: 12px;
    justify-content: space-between;
    list-style: none;
    margin-bottom: 12px;
}

.work-folder-summary::-webkit-details-marker {
    display: none;
}

.work-folder-summary::before {
    color: var(--accent-dark);
    content: "▾";
    font-size: 15px;
    margin-right: 2px;
}

.work-folder-section:not([open]) > .work-folder-summary::before {
    content: "▸";
}

.work-folder-summary span:first-child {
    margin-right: auto;
}

.folder-parent-control {
    margin: 0 0 12px;
}

.folder-parent-control label {
    align-items: center;
    display: inline-flex;
    gap: 8px;
}

.link-button {
    background: transparent;
    border: 0;
    color: var(--accent-dark);
    display: inline;
    min-height: 0;
    padding: 0;
}

.link-button:hover {
    text-decoration: underline;
}

.danger-link {
    color: var(--bad);
}

.page-actions {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: flex-end;
}

.page-actions form {
    margin: 0;
}

.panel,
.form-panel {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 8px;
    margin-bottom: 18px;
    padding: 20px;
}

.stats-grid {
    display: grid;
    gap: 14px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-bottom: 18px;
}

.workflow {
    display: grid;
    gap: 12px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-bottom: 18px;
}

.workflow-step {
    align-items: center;
    background: #ffffff;
    border: 1px solid var(--line);
    border-radius: 8px;
    display: flex;
    gap: 10px;
    padding: 12px;
}

.workflow-step span {
    align-items: center;
    background: #ffffff;
    border: 1px solid var(--line);
    border-radius: 999px;
    display: inline-flex;
    font-weight: 700;
    height: 28px;
    justify-content: center;
    width: 28px;
}

.workflow-step.active {
    background: var(--surface);
}

.workflow-step.active span {
    background: var(--accent);
    color: #ffffff;
}

.stat {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 16px;
}

.stat span {
    color: var(--muted);
    display: block;
    font-size: 14px;
}

.stat strong {
    display: block;
    font-size: 28px;
    margin-top: 4px;
}

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

table {
    border-collapse: collapse;
    min-width: 760px;
    width: 100%;
}

.task-bank-subjects table {
    min-width: 0;
    width: 100%;
}

.task-bank-subjects th:last-child,
.task-bank-subjects td:last-child {
    text-align: right;
    white-space: nowrap;
    width: 1%;
}

th,
td {
    border-bottom: 1px solid var(--line);
    padding: 10px;
    text-align: left;
    vertical-align: top;
}

th {
    color: var(--muted);
    font-size: 13px;
    font-weight: 700;
}

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

.muted-panel {
    background: #ffffff;
}

.student-card-grid {
    display: grid;
    gap: 14px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.assigned-tests-panel .student-card-grid {
    grid-template-columns: 1fr;
}

.student-test-card,
.student-attempt-card,
.empty-card {
    background: #ffffff;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 16px;
}

.archived-card {
    background: #f8fafc;
}

.student-card-head {
    align-items: flex-start;
    display: flex;
    gap: 12px;
    justify-content: space-between;
    margin-bottom: 14px;
}

.student-card-head h3,
.student-attempt-card h3 {
    font-size: 18px;
    margin: 0;
}

.student-card-head p,
.student-attempt-card p {
    color: var(--muted);
    margin: 4px 0 0;
}

.status-pill {
    border: 1px solid var(--line);
    border-radius: 999px;
    color: var(--muted);
    flex: 0 0 auto;
    font-size: 13px;
    font-weight: 700;
    line-height: 1.2;
    padding: 6px 9px;
    white-space: nowrap;
}

.status-pill.done {
    border-color: #b7dcc7;
    color: var(--ok);
}

.status-pill.pending {
    background: var(--warning-bg);
    border-color: var(--warning-border);
    color: var(--warn);
}

.status-pill.new {
    border-color: var(--accent);
    color: var(--accent-dark);
}

.status-pill.locked {
    border-color: var(--line);
    color: var(--muted);
}

.student-card-meta {
    display: grid;
    gap: 12px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin: 0 0 16px;
}

.student-card-meta div {
    min-width: 0;
}

.student-card-meta dt {
    color: var(--muted);
    font-size: 13px;
    margin-bottom: 2px;
}

.student-card-meta dd {
    font-weight: 700;
    margin: 0;
}

.student-card-actions {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.pdf-button {
    align-items: center;
    display: inline-flex;
    gap: 7px;
}

.pdf-doc-icon {
    border: 1.8px solid currentColor;
    border-radius: 2px;
    display: inline-block;
    height: 18px;
    position: relative;
    width: 14px;
}

.pdf-doc-icon::before {
    border-bottom: 1.8px solid currentColor;
    border-left: 1.8px solid currentColor;
    content: "";
    height: 5px;
    position: absolute;
    right: -1.8px;
    top: -1.8px;
    width: 5px;
}

.attempt-card-list {
    display: grid;
    gap: 10px;
}

.student-attempt-card {
    align-items: center;
    display: flex;
    gap: 14px;
    justify-content: space-between;
}

.attempt-result {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: flex-end;
    text-align: right;
}

.empty-cell {
    padding: 18px 10px;
}

.empty-cell strong {
    display: block;
    margin-bottom: 10px;
}

.answer-preview {
    color: var(--muted);
    max-width: 220px;
}

.messages {
    margin-bottom: 18px;
}

.message {
    background: #ffffff;
    border: 1px solid #cce8d5;
    border-radius: 6px;
    margin-bottom: 8px;
    padding: 10px 12px;
}

.message.error,
.message.warning {
    background: var(--warning-bg);
    border-color: var(--warning-border);
    color: var(--warn);
}

form p {
    margin: 0 0 14px;
}

label {
    display: block;
    font-weight: 700;
    margin-bottom: 6px;
}

/* Checkbox controls follow the first text line; the label remains the large click target. */
label:has(> input[type="checkbox"]) {
    align-items: flex-start;
    display: inline-flex;
    font-weight: 400;
    gap: .45em;
    line-height: 1.5;
}

label:has(> input[type="checkbox"]:not(.catalog-checkbox)) > input[type="checkbox"]:not(.catalog-checkbox) {
    accent-color: var(--accent);
    flex: 0 0 auto;
    height: var(--inline-glyph-size);
    margin: .25em 0 0;
    width: var(--inline-glyph-size);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="file"],
select,
textarea {
    background: #ebeff4;
    border: 1px solid #cfd6c8;
    border-radius: 6px;
    color: var(--text);
    font: inherit;
    font-size: 16px;
    max-width: 100%;
    padding: 9px 10px;
    width: 100%;
}

textarea {
    resize: vertical;
}

.helptext {
    color: var(--muted);
    display: block;
    font-size: 13px;
    margin-top: 4px;
}

.random-task-form {
    display: grid;
    gap: 12px;
    grid-template-columns: minmax(120px, 0.35fr) repeat(3, minmax(200px, 1fr));
}

.random-task-form p {
    margin: 0;
}

.random-task-form button {
    align-self: end;
    justify-self: start;
}

.category-form {
    display: grid;
    gap: 12px;
    grid-template-columns: minmax(180px, 0.9fr) repeat(3, minmax(190px, 1fr));
}

.category-form p {
    margin: 0;
}

.category-form button {
    align-self: end;
    justify-self: start;
}

.category-list {
    display: grid;
    gap: 10px;
}

.category-row {
    align-items: center;
    border: 1px solid var(--line);
    border-radius: 8px;
    display: flex;
    gap: 14px;
    justify-content: space-between;
    padding: 12px;
}

.category-row h3 {
    margin: 0 0 4px;
}

.category-row p {
    margin: 0;
}

.danger-zone {
    border-color: #d58478;
}

.danger-zone h2 {
    color: var(--bad);
}

.confirm-form {
    display: grid;
    gap: 10px;
    max-width: 520px;
}

.confirm-form button {
    justify-self: start;
}

.errorlist {
    color: var(--bad);
    margin: 0 0 8px;
    padding-left: 18px;
}

.form-actions,
.submit-row {
    align-items: center;
    display: flex;
    gap: 10px;
    margin-top: 14px;
}

.submit-row {
    justify-content: flex-end;
}

.submit-row.is-hidden {
    display: none;
}

.submit-row .primary {
    font-weight: 700;
    min-height: 46px;
    min-width: 180px;
}

.two-columns {
    display: grid;
    gap: 18px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.wide-left {
    grid-template-columns: minmax(0, 1.4fr) minmax(320px, 0.8fr);
}

.small-input {
    max-width: 90px;
}

.student-work-editor {
    display: grid;
    gap: 18px;
}

.student-work-editor > .panel {
    margin: 0;
}

.student-question-table select,
.student-question-table textarea,
.student-question-table input[type="number"] {
    width: 100%;
}

.student-question-table .small-input {
    min-width: 64px;
}

.question-order-column {
    width: 60px;
}

.question-delete-column {
    text-align: center;
    width: 52px;
}

.question-order-control {
    display: grid;
    grid-template-columns: 28px 20px;
    height: 48px;
    overflow: hidden;
    width: 48px;
}

.question-order-control > input[type="number"] {
    -moz-appearance: textfield;
    appearance: textfield;
    border: 1px solid var(--line);
    border-radius: 7px 0 0 7px;
    font-size: 15px;
    height: 48px;
    min-width: 0;
    padding: 0 4px;
    text-align: center;
    width: 28px;
}

.question-order-control > input[type="number"]::-webkit-inner-spin-button,
.question-order-control > input[type="number"]::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.question-order-arrows {
    display: grid;
    grid-template-rows: 1fr 1fr;
    height: 48px;
}

.question-order-arrows button {
    align-items: center;
    background: var(--accent);
    border: 0;
    border-left: 1px solid rgba(255, 255, 255, .45);
    border-radius: 0;
    color: #fff;
    display: flex;
    font-size: 13px;
    justify-content: center;
    min-height: 24px;
    padding: 0;
    width: 20px;
}

.question-order-arrows button:first-child {
    border-radius: 0 7px 0 0;
    border-bottom: 1px solid rgba(255, 255, 255, .45);
}

.question-order-arrows button:last-child {
    border-radius: 0 0 7px 0;
}

.question-order-arrows button:disabled {
    opacity: .45;
}

.question-row-delete {
    align-items: center;
    background: var(--bad);
    border: 0;
    border-radius: 7px;
    color: #fff;
    display: inline-flex;
    font-size: 22px;
    height: 30px;
    justify-content: center;
    line-height: 1;
    padding: 0;
    width: 30px;
}

.question-row-delete:disabled {
    opacity: .55;
}

.question-card,
.question-result {
    border-bottom: 1px solid var(--line);
    padding: 18px 0;
}

.question-card:first-child,
.question-result:first-child {
    padding-top: 0;
}

.question-card header,
.question-result header {
    align-items: center;
    display: flex;
    gap: 14px;
    justify-content: space-between;
}

.question-card h2,
.question-result h2,
.question-result h3 {
    font-size: 20px;
    margin: 0 0 10px;
}

.task-card-actions {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: flex-end;
}

.task-result-actions {
    justify-content: space-between;
    margin: 0 0 12px;
}

.task-result-actions p {
    margin: 0;
}

.task-select-control {
    align-items: center;
    border: 1px solid var(--line);
    border-radius: 6px;
    display: inline-flex;
    gap: 6px;
    min-height: 38px;
    padding: 7px 10px;
    white-space: nowrap;
}

.markdown {
    max-width: 760px;
}

.question-card .markdown,
.question-result .markdown {
    max-width: 100%;
}

.question-card .markdown > :not(:has(img)),
.question-result .markdown > :not(:has(img)) {
    max-width: 100%;
}

.question-card .markdown > :has(img),
.question-result .markdown > :has(img) {
    max-width: 100%;
}

.markdown img,
.zoomable-image {
    background: #ffffff;
    border: 1px solid var(--line);
    border-radius: 6px;
    cursor: zoom-in;
    display: block;
    height: var(--markdown-image-height);
    margin: 12px 0;
    max-width: 100%;
    object-fit: contain;
    object-position: center;
    padding: 8px;
    width: 100%;
}

.markdown img.animated-gif {
    background: transparent;
    border: 0;
    border-radius: 0;
    cursor: default;
    height: auto;
    margin-left: auto;
    margin-right: auto;
    padding: 0;
    width: auto;
}

.markdown {
    overflow-wrap: break-word;
    overflow-x: auto;
}

.markdown .katex-display {
    max-width: 100%;
    overflow-x: auto;
    overflow-y: hidden;
    padding-bottom: 4px;
}

.markdown .katex-display[data-math-zoom] {
    border-radius: 6px;
    cursor: zoom-in;
    padding: 8px 6px;
    transition: background-color 0.15s ease, box-shadow 0.15s ease;
}

.markdown .katex-display[data-math-zoom]:hover {
    background: rgba(120, 152, 137, 0.08);
    box-shadow: inset 0 0 0 1px rgba(120, 152, 137, 0.18);
}

.markdown .katex-display[data-math-zoom]:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
}

.markdown .katex-display > .katex {
    display: inline-block;
    min-width: max-content;
}

.markdown table,
.question-card .markdown table,
.question-result .markdown table {
    border: 1px solid var(--line);
    border-collapse: collapse;
    display: table;
    margin: 14px auto;
    max-width: none;
    min-width: 0;
    table-layout: auto;
    width: max-content;
}

.markdown th,
.markdown td,
.question-card .markdown th,
.question-card .markdown td,
.question-result .markdown th,
.question-result .markdown td {
    border: 1px solid var(--line);
    min-width: 44px;
    padding: 8px 12px;
    text-align: center;
    vertical-align: middle;
    white-space: nowrap;
}

.markdown th,
.question-card .markdown th,
.question-result .markdown th {
    background: #f6f8fb;
    color: var(--text);
    font-size: inherit;
}

.news-preview.markdown table,
.news-body.markdown table {
    margin-left: 0;
    margin-right: 0;
    max-width: 100%;
    table-layout: auto;
    width: 100%;
}

.news-preview.markdown th,
.news-preview.markdown td,
.news-body.markdown th,
.news-body.markdown td {
    min-width: 0;
    overflow-wrap: anywhere;
    text-align: left;
    white-space: normal;
}

.markdown table + p {
    margin-top: 14px;
}

body.lightbox-open {
    overflow: hidden;
}

.image-lightbox[hidden] {
    display: none;
}

.image-lightbox {
    align-items: center;
    background: rgba(20, 25, 34, 0.88);
    display: flex;
    inset: 0;
    justify-content: center;
    padding: 28px;
    position: fixed;
    z-index: 1000;
}

.image-lightbox:not(.is-open) {
    display: none;
}

.image-lightbox img {
    background: #ffffff;
    border-radius: 6px;
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.28);
    max-height: calc(100vh - 80px);
    max-width: calc(100vw - 48px);
    object-fit: contain;
}

.image-lightbox.is-math img {
    display: none;
}

.math-lightbox-content {
    background: #ffffff;
    border-radius: 8px;
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.28);
    color: var(--text);
    max-height: calc(100vh - 80px);
    max-width: calc(100vw - 48px);
    overflow: auto;
    padding: 28px;
}

.math-lightbox-content .katex-display {
    font-size: 1.8rem;
    margin: 0;
    max-width: none;
    overflow: visible;
    padding: 0;
}

.math-lightbox-content .katex-display > .katex {
    min-width: max-content;
}

.image-lightbox-close {
    align-items: center;
    background: #ffffff;
    border: 1px solid #ffffff;
    border-radius: 999px;
    color: var(--text);
    display: inline-flex;
    font-size: 30px;
    height: 44px;
    justify-content: center;
    line-height: 1;
    min-height: 44px;
    padding: 0;
    position: fixed;
    right: 18px;
    top: 18px;
    width: 44px;
}

.attachments {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 12px 0;
}

.inline-document-button {
    align-items: center;
    background: #f7faf9;
    border: 1px solid #9eafa8;
    border-radius: 8px;
    color: var(--text);
    display: inline-flex;
    gap: 10px;
    margin: 4px 2px;
    max-width: min(100%, 360px);
    min-height: 58px;
    padding: 8px 13px 8px 9px;
    text-decoration: none;
    transition: background .15s ease, border-color .15s ease, transform .15s ease;
    vertical-align: middle;
}

.inline-document-button::before {
    background-position: center;
    background-repeat: no-repeat;
    background-size: contain;
    content: "";
    flex: 0 0 38px;
    height: 46px;
    width: 38px;
}

.inline-document-pdf::before {
    background-image: url("icons/files/pdf.597e39587f4d.svg");
}

.inline-document-word::before {
    background-image: url("icons/files/word.652073724d08.svg");
}

.inline-document-excel::before {
    background-image: url("icons/files/excel.c3d180166295.svg");
}

.inline-document-file::before {
    background-image: url("icons/files/file.47e9eab14595.svg");
}

.inline-document-button:hover {
    background: #e9f2ee;
    border-color: #557d6e;
    transform: translateY(-1px);
}

.attachments a {
    background: #ffffff;
    border: 1px solid var(--line);
    border-radius: 6px;
    padding: 6px 10px;
}

.field-grid {
    display: grid;
    gap: 12px;
    grid-template-columns: repeat(var(--field-count, 1), minmax(0, 1fr));
    max-width: 100%;
    width: 100%;
}

.field-grid label,
.answer-field {
    margin: 0;
    min-width: 0;
    width: 100%;
}

.multi-field-rows {
    display: grid;
    gap: 12px;
    max-width: 100%;
    width: 100%;
}

.answer-block {
    margin-top: 18px;
}

.multi-answer-block {
    max-width: 100%;
    width: 100%;
}

.answer-block-title {
    font-size: 16px;
    line-height: 1.3;
    margin: 0 0 8px;
}

.answer-field .answer-input {
    width: 100%;
}

.answer-input {
    min-height: 46px;
}

.visually-hidden {
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    height: 1px;
    overflow: hidden;
    position: absolute;
    white-space: nowrap;
    width: 1px;
}

.test-step-controls {
    align-items: center;
    display: grid;
    gap: 12px;
    grid-template-columns: minmax(160px, 1fr) auto minmax(160px, 1fr);
    margin: 18px 0;
}

.test-step-controls button {
    justify-self: stretch;
}

.test-step-counter {
    color: var(--muted);
    font-weight: 700;
    text-align: center;
    white-space: nowrap;
}

.choice-list {
    display: grid;
    gap: 10px;
    max-width: 760px;
}

.choice-option {
    align-items: flex-start;
    background: #ffffff;
    border: 1px solid var(--line);
    border-radius: 6px;
    display: flex;
    gap: 10px;
    margin: 0;
    min-height: 52px;
    padding: 12px;
    touch-action: manipulation;
}

.choice-option input {
    flex: 0 0 auto;
    height: 20px;
    margin-top: 2px;
    width: 20px;
}

.choice-option span {
    min-width: 0;
    overflow-wrap: anywhere;
}

.file-picker {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    font-weight: 400;
    gap: 10px;
    margin: 12px 0 8px;
    max-width: 760px;
    min-height: 52px;
    position: relative;
    touch-action: manipulation;
}

.file-picker input[type="file"] {
    cursor: pointer;
    height: 100%;
    inset: 0;
    opacity: 0;
    padding: 0;
    position: absolute;
    width: 100%;
}

.file-picker-button {
    background: var(--accent);
    border: 1px solid var(--accent);
    border-radius: 6px;
    color: #ffffff;
    display: inline-flex;
    min-height: 46px;
    padding: 10px 14px;
    text-align: center;
}

.file-picker-name {
    color: var(--muted);
    overflow-wrap: anywhere;
}

.preview-options {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.preview-options label {
    align-items: center;
    display: flex;
    gap: 6px;
    margin: 0;
}

.answer-box,
.criteria-box,
.hint-box,
.solution-box {
    border-top: 1px solid var(--line);
    margin-top: 14px;
    padding-top: 14px;
}

.hint-details {
    border: 1px solid var(--line);
    border-radius: 8px;
    margin: 14px 0;
    max-width: 100%;
    padding: 0;
}

.hint-details summary {
    cursor: pointer;
    font-weight: 700;
    list-style-position: inside;
    min-height: 44px;
    padding: 10px 12px;
    touch-action: manipulation;
}

.hint-details .markdown {
    border-top: 1px solid var(--line);
    padding: 12px;
}

.task-links {
    overflow-wrap: anywhere;
}

.task-list .question-card:last-child {
    border-bottom: 0;
    padding-bottom: 0;
}

.sticky-head {
    background: #ffffff;
    border-bottom: 1px solid var(--line);
    margin: -28px -28px 20px;
    padding: 18px 28px;
    position: sticky;
    top: 58px;
    z-index: 5;
}

.timer,
.result-badge {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 8px;
    font-weight: 700;
    padding: 10px 14px;
}

.result-badge span {
    color: var(--muted);
    display: block;
    font-size: 13px;
    font-weight: 400;
}

.result-details h2 {
    margin: 0 0 12px;
}

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

.result-summary-item {
    background: #ffffff;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 14px;
}

.result-summary-item span {
    color: var(--muted);
    display: block;
    font-size: 13px;
    margin-bottom: 4px;
}

.result-summary-item strong {
    display: block;
    font-size: 20px;
}

.answer-detail-grid {
    display: grid;
    gap: 12px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin: 14px 0;
    max-width: 900px;
}

.answer-detail-grid div {
    background: #ffffff;
    border: 1px solid var(--line);
    border-radius: 8px;
    min-width: 0;
    padding: 12px;
}

.answer-detail-grid dt {
    color: var(--muted);
    font-size: 13px;
    margin-bottom: 4px;
}

.answer-detail-grid dd {
    margin: 0;
    overflow-wrap: anywhere;
}

.teacher-feedback {
    background: #ffffff;
    border: 1px solid var(--line);
    border-radius: 8px;
    margin: 12px 0;
    max-width: 760px;
    padding: 12px;
}

.teacher-feedback p {
    margin: 4px 0 0;
}

.status {
    border-radius: 999px;
    font-size: 13px;
    padding: 4px 9px;
}

.status.ok {
    background: #ffffff;
    color: var(--ok);
}

.status.bad {
    background: #ffffff;
    color: var(--bad);
}

.status.pending {
    background: #ffffff;
    color: var(--warn);
}

.manual-review-form {
    border-top: 1px solid var(--line);
    margin-top: 14px;
    max-width: 520px;
    padding-top: 14px;
}

.self-review-form {
    display: grid;
    gap: 16px;
}

.self-review-task {
    border-top: 1px solid var(--line);
    padding-top: 14px;
}

.notification-list {
    display: grid;
    gap: 10px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.notification-item {
    align-items: center;
    border: 1px solid var(--line);
    border-radius: 8px;
    display: flex;
    gap: 14px;
    justify-content: space-between;
    padding: 12px;
}

.notification-item.unread {
    border-left: 4px solid var(--accent);
}

.notification-item p {
    margin: 4px 0;
}

.notification-actions {
    align-items: center;
    display: flex;
    flex: 0 0 auto;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: flex-end;
}

.material-page-head {
    display: grid;
    gap: 12px;
}

.material-breadcrumbs {
    align-items: center;
    color: var(--muted);
    display: flex;
    flex-wrap: wrap;
    font-size: 14px;
    gap: 6px;
}

.material-breadcrumbs a {
    color: var(--accent-dark);
}

.material-breadcrumb-separator {
    color: var(--line);
}

.material-title-row {
    --material-row-control-size: 24px;
    align-items: flex-start;
    display: flex;
    gap: 16px;
    justify-content: space-between;
    width: 100%;
}

.material-page-head .material-title-row {
    --material-row-control-size: 36px;
}

.material-title-row h1 {
    flex: 1 1 auto;
    margin: 0;
}

.material-head-actions,
.material-row-actions {
    align-items: center;
    display: inline-flex;
    flex-wrap: wrap;
    gap: 6px;
}

.material-folder-controls {
    align-items: center;
    display: inline-flex;
    flex: 0 0 auto;
    gap: 6px;
    margin-left: auto;
}

.material-title-row .material-head-actions {
    align-items: center;
    flex: 0 0 auto;
    line-height: 1.1;
    margin-left: auto;
    margin-top: 8px;
}

.material-title-row .material-head-actions .material-icon-button,
.material-title-row .material-head-actions .icon-button {
    --material-icon-size: var(--material-row-control-size);
}

.material-row-actions {
    flex: 0 0 auto;
    margin-left: auto;
}

.material-row-actions .inline-form,
.material-folder-controls .inline-form {
    --material-icon-size: var(--material-row-control-size);
    align-items: center;
    display: inline-flex;
    flex: 0 0 auto;
    height: var(--material-icon-size);
    line-height: 1;
}

.material-row-actions .inline-form .material-icon-button,
.material-folder-controls .inline-form .material-icon-button {
    vertical-align: middle;
}

.materials-tree {
    display: grid;
    gap: 8px;
    margin: 0 auto;
    max-width: 940px;
}

.material-folder {
    border-bottom: 1px solid var(--line);
    padding: 6px 0;
}

.material-folder-row,
.material-article-row {
    align-items: flex-start;
    display: flex;
    gap: 12px;
    min-height: 42px;
    width: 100%;
}

.material-folder-row {
    --material-row-control-size: 22px;
    font-size: 20px;
    justify-content: flex-start;
    line-height: 1.35;
}

.material-article-row {
    --material-row-control-size: 22px;
    font-size: 18px;
    justify-content: space-between;
    line-height: 1.35;
}

.material-folder-row .material-folder-controls,
.material-article-row .material-row-actions {
    margin-top: 1px;
}

.material-folder-title,
.material-article-row > a {
    color: var(--text);
    flex: 1 1 auto;
    font-size: 1em;
    font-weight: 700;
    min-width: 0;
}

.material-article-row > a {
    font-weight: 400;
}

.material-folder-content {
    display: grid;
    gap: 4px;
    padding: 6px 0 6px 22px;
}

.material-folder-content[hidden] {
    display: none;
}

.material-icon-button,
.icon-button {
    --material-icon-size: var(--material-row-control-size, 30px);
    align-items: center;
    aspect-ratio: 1 / 1;
    background: transparent;
    border: 0;
    border-radius: 4px;
    box-sizing: border-box;
    box-shadow: 0 2px 0 rgba(31, 42, 35, 0.18);
    cursor: pointer;
    display: inline-flex;
    flex: 0 0 auto;
    font-size: inherit;
    height: var(--material-icon-size);
    justify-content: center;
    line-height: 1;
    max-height: var(--material-icon-size);
    max-width: var(--material-icon-size);
    min-height: var(--material-icon-size);
    min-width: var(--material-icon-size);
    overflow: hidden;
    padding: 0;
    text-decoration: none;
    transition: box-shadow 0.12s ease, transform 0.12s ease;
    vertical-align: text-top;
    width: var(--material-icon-size);
}

.material-icon-button:hover,
.icon-button:hover {
    transform: translateY(-1px);
}

.material-icon-button:active,
.icon-button:active,
.material-action-menu.is-open > .material-icon-button,
.icon-button.is-copied {
    box-shadow: inset 0 2px 4px rgba(31, 42, 35, 0.22);
    transform: translateY(1px);
}

.material-icon-button img,
.icon-button img {
    display: block;
    height: 100%;
    max-height: 100%;
    max-width: 100%;
    object-fit: contain;
    pointer-events: none;
    width: 100%;
}

.public-head-icon-button {
    --material-icon-size: 36px;
}

.material-folder-toggle .material-toggle-collapse {
    display: none;
}

.material-folder.is-open > .material-folder-row .material-toggle-expand {
    display: none;
}

.material-folder.is-open > .material-folder-row .material-toggle-collapse {
    display: block;
}

.material-action-menu {
    display: inline-flex;
    position: relative;
}

.material-action-menu-panel.is-hidden {
    display: none !important;
}

.material-action-menu-panel {
    background: #ffffff;
    border: 1px solid var(--line);
    border-radius: 6px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
    display: grid;
    gap: 4px;
    min-width: 130px;
    padding: 8px;
    position: absolute;
    right: 0;
    top: calc(100% + 6px);
    z-index: 12;
}

.material-action-menu-panel a {
    color: var(--text);
    padding: 6px 8px;
}

.danger-link {
    color: var(--bad);
}

pre {
    background: #ffffff;
    border: 1px solid var(--line);
    border-radius: 6px;
    overflow-x: auto;
    padding: 10px;
}

code {
    background: #ffffff;
    border-radius: 4px;
    padding: 2px 4px;
}

@media (max-width: 760px) {
    :root {
        --markdown-image-height: 180px;
    }

    .topbar,
    .page-head,
    .section-head,
    .page-actions,
    .notification-item {
        align-items: flex-start;
        flex-direction: column;
    }

    .topbar {
        align-items: flex-start;
        gap: 0;
        min-height: 52px;
        padding: 7px 12px;
    }

    .site-header-brand {
        display: none;
    }

    .mobile-menu-toggle {
        align-items: center;
        display: inline-flex;
        height: 42px;
        justify-content: center;
        min-height: 42px;
        padding: 0;
        position: relative;
        width: 46px;
        z-index: 2;
    }

    .topbar.is-mobile-menu-open .mobile-menu-icon span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .topbar.is-mobile-menu-open .mobile-menu-icon span:nth-child(2) {
        opacity: 0;
    }

    .topbar.is-mobile-menu-open .mobile-menu-icon span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .page {
        padding: 18px;
    }

    .brand {
        font-size: 16px;
    }

    .topbar-nav {
        align-items: flex-start;
        flex-direction: column;
        display: none;
        gap: 14px;
        margin: 8px 0 10px;
        padding: 10px 4px 4px;
        margin-left: 0;
        width: 100%;
    }

    .topbar.is-mobile-menu-open {
        box-shadow: 0 8px 20px rgba(31, 42, 35, .14);
    }

    .topbar.is-mobile-menu-open .topbar-nav {
        display: flex;
    }

    .topbar-nav a {
        line-height: 1.15;
    }

    .random-task-form,
    .category-form {
        grid-template-columns: 1fr;
    }

    .site-footer {
        align-items: flex-start;
        flex-direction: column;
        gap: 8px;
        padding: 0 18px 18px;
    }

    .task-basket {
        bottom: 8px;
        left: 8px;
        right: 8px;
        width: auto;
    }

    .test-form {
        display: grid;
        gap: 14px;
    }

    .question-card {
        border: 1px solid var(--line);
        border-radius: 8px;
        padding: 16px;
    }

    .question-result {
        border: 1px solid var(--line);
        border-radius: 8px;
        margin-bottom: 14px;
        padding: 16px;
    }

    .question-card:first-child {
        padding-top: 16px;
    }

    .question-result:first-child {
        padding-top: 16px;
    }

    .question-card header,
    .question-result header {
        align-items: flex-start;
        gap: 8px;
    }

    .question-card h2,
    .question-result h2,
    .question-result h3 {
        font-size: 19px;
        line-height: 1.25;
    }

    .question-card .markdown,
    .question-result .markdown,
    .choice-list,
    .field-grid,
    .file-picker {
        max-width: 100%;
    }

    .result-summary-grid,
    .answer-detail-grid {
        grid-template-columns: 1fr;
    }

    .markdown img,
    .zoomable-image {
        height: auto;
        max-height: 220px;
        min-height: 140px;
    }

    .math-lightbox-content {
        padding: 18px;
    }

    .math-lightbox-content .katex-display {
        font-size: 1.35rem;
    }

    .choice-option {
        align-items: center;
        min-height: 56px;
        padding: 14px;
    }

    .test-step-controls {
        grid-template-columns: 1fr;
    }

    .test-step-counter {
        order: -1;
    }

    .teacher-tests-table-wrap {
        overflow-x: visible;
    }

    .teacher-tests-table,
    .teacher-tests-table thead,
    .teacher-tests-table tbody,
    .teacher-tests-table tr,
    .teacher-tests-table th,
    .teacher-tests-table td {
        display: block;
    }

    .teacher-tests-table thead {
        display: none;
    }

    .teacher-tests-table tbody {
        display: grid;
        gap: 10px;
    }

    .teacher-tests-table tr {
        border: 1px solid var(--line);
        border-radius: 8px;
        display: grid;
        gap: 10px;
        padding: 12px;
    }

    .teacher-tests-table th,
    .teacher-tests-table td {
        border: 0;
        padding: 0;
        text-align: left;
    }

    .teacher-tests-table th:last-child,
    .teacher-tests-table td:last-child {
        text-align: left;
    }

    .teacher-tests-table .test-title-cell {
        min-width: 0;
        overflow-wrap: anywhere;
        width: auto;
    }

    .teacher-tests-table .teacher-test-actions {
        gap: 6px;
        justify-content: flex-start;
        min-width: 0;
    }

    .category-row {
        align-items: stretch;
        grid-template-columns: 1fr;
    }

    .category-actions {
        justify-content: flex-start;
    }

    .category-actions .auto-submit-form label {
        align-items: flex-start;
        flex-direction: column;
    }

    .category-actions select {
        max-width: 100%;
        width: 100%;
    }

    .field-grid {
        grid-template-columns: 1fr;
    }

    .field-grid label {
        width: 100%;
    }

    .file-picker {
        align-items: stretch;
        flex-direction: column;
    }

    .file-picker-button {
        align-items: center;
        justify-content: center;
        width: 100%;
    }

    .submit-row {
        background: #ffffff;
        border-top: 1px solid var(--line);
        bottom: 0;
        justify-content: stretch;
        margin: 4px -18px -18px;
        padding: 12px 18px;
        position: sticky;
        z-index: 4;
    }

    .submit-row .primary {
        min-height: 52px;
        width: 100%;
    }

    .stats-grid,
    .student-card-grid,
    .workflow,
    .category-form,
    .random-task-form,
    .two-columns,
    .wide-left {
        grid-template-columns: 1fr;
    }

    .category-row {
        align-items: stretch;
        flex-direction: column;
    }

    .random-task-form button {
        justify-self: stretch;
    }

    .student-card-head,
    .student-attempt-card,
    .attempt-result {
        align-items: stretch;
        flex-direction: column;
        text-align: left;
    }

    .student-card-meta {
        grid-template-columns: 1fr;
    }

    .student-card-actions,
    .student-card-actions .button,
    .attempt-result .button {
        width: 100%;
    }

    .student-card-actions .button,
    .attempt-result .button {
        text-align: center;
    }

    .sticky-head {
        margin: -18px -18px 4px;
        padding: 14px 18px;
        position: static;
    }

    .public-page-head h1,
    .news-detail-head h1 {
        font-size: 36px;
    }

    .public-page-head,
    .news-feed {
        max-width: 100%;
        width: 100%;
    }

    .news-card,
    .news-card-head,
    .news-preview,
    .news-card-actions {
        max-width: 100%;
        min-width: 0;
        width: 100%;
    }

    .news-preview.markdown,
    .news-body.markdown {
        overflow-x: hidden;
    }

    .news-card-head {
        grid-template-columns: 1fr;
    }

    .news-card-head time {
        border-left: 0;
        border-top: 1px solid var(--line);
    }

    .news-card-actions {
        align-items: center;
        flex-direction: row;
        justify-content: flex-end;
    }

    .news-card-actions .news-expand-link {
        margin-right: auto;
    }

    .news-card-actions .icon-button {
        width: var(--material-icon-size);
    }

    .material-title-row {
        --material-row-control-size: 26px;
        align-items: flex-start;
        flex-direction: row;
    }

    .material-head-actions {
        justify-content: flex-end;
    }

    .material-title-row .material-head-actions {
        align-items: center;
        margin-top: 5px;
    }

    .material-action-menu-panel {
        left: auto;
        right: 0;
    }

    .material-folder-content {
        padding-left: 12px;
    }

    .contacts-layout {
        align-items: stretch;
        gap: 12px;
        grid-template-columns: minmax(96px, 38%) minmax(0, 1fr);
    }

    .contact-photo-card {
        max-width: none;
        padding: 5px;
        width: 100%;
    }

    .contact-info-card {
        gap: 10px;
        min-width: 0;
        padding: 2px 0;
    }

    .contact-link {
        font-size: clamp(13px, 3.7vw, 16px);
        gap: 8px;
        max-width: 100%;
    }

    .contact-link span:not(.contact-icon) {
        overflow-wrap: anywhere;
    }

    .contact-icon {
        height: 26px;
        width: 26px;
    }

    .contact-profi-widget {
        --profi-widget-scale: 0.56;
    }

    .test-landing-card {
        padding: 22px;
    }

    .placeholder-page img {
        max-width: 260px;
    }
}
/* Task bank V2 progress */
.progress-filter-grid,
.progress-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    gap: 1rem;
}

.progress-filter-grid label,
.progress-filter-grid select {
    display: grid;
    width: 100%;
    gap: .35rem;
}

.progress-card {
    border: 1px solid var(--border, #d8dee8);
    border-radius: 12px;
    padding: 1rem;
    background: var(--surface, #fff);
}

.progress-card header,
.progress-error-card header {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: baseline;
}

.progress-percent {
    margin-top: .7rem;
    font-size: 2rem;
    font-weight: 700;
}

.classification-chips {
    display: flex;
    flex-wrap: wrap;
    gap: .4rem;
    margin: .7rem 0;
}

.classification-chips span {
    border-radius: 999px;
    padding: .25rem .65rem;
    background: #eef3fb;
    font-size: .85rem;
}

.progress-chart {
    display: block;
    margin: 1rem 0;
}

.progress-chart svg {
    display: block;
    width: 100%;
    max-height: 220px;
    color: #3568b8;
    background: #f8fafc;
    border-radius: 10px;
}

.solution-fragment {
    margin-top: 1rem;
    border-top: 1px solid #d8dee8;
    padding-top: 1rem;
}

.compact-results-grid {
    display: grid;
    gap: 14px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.compact-result-card {
    background: #ffffff;
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 16px;
}

.compact-result-card p {
    margin: 7px 0 0;
}

.compact-result-subject {
    color: var(--muted);
    font-size: 14px;
}

.compact-result-value {
    font-size: 22px;
    font-weight: 700;
}

.results-subject > h2 {
    margin: 28px 0 12px;
}

.progress-block h3 {
    font-size: 22px;
    margin-top: 0;
}

.errors-page-head form {
    flex: 0 0 auto;
}

.solution-disclosure {
    border-top: 1px solid var(--line);
    margin-top: 16px;
    padding-top: 12px;
}

.solution-disclosure summary {
    color: var(--accent-dark);
    cursor: pointer;
    font-weight: 700;
}

.solution-attachment-image {
    display: block;
    margin: 12px 0;
    max-height: 520px;
    max-width: 100%;
    object-fit: contain;
}

@media (max-width: 720px) {
    .progress-graphs { display: none; }
    .progress-filter-grid { grid-template-columns: 1fr; }
    .progress-error-card header { align-items: flex-start; }
    .compact-results-grid { grid-template-columns: 1fr; }
    .compact-results-panel .section-head,
    .errors-page-head { align-items: stretch; flex-direction: column; }
    .compact-results-panel .section-head .button,
    .errors-page-head button { text-align: center; width: 100%; }
}
.minimal-file-dropzone {
    align-items: center;
    background: linear-gradient(145deg, #fff 0%, #f7faf9 100%);
    border: 3px dashed #7f9f91;
    border-radius: 1rem;
    color: #6d9484;
    cursor: pointer;
    display: flex;
    justify-content: center;
    min-height: clamp(150px, 24vw, 230px);
    overflow: hidden;
    padding: 1.25rem;
    position: relative;
    text-align: center;
    transition: border-color .15s ease, background .15s ease, transform .15s ease;
}

.minimal-file-dropzone:hover,
.minimal-file-dropzone:focus-within {
    background: #f1f7f4;
    border-color: #557d6e;
}

.minimal-file-dropzone.is-dragover {
    background: #e2f0e9;
    border-color: #3f6c5b;
    transform: scale(1.005);
}

.minimal-file-prompt {
    font-size: clamp(1.2rem, 3.2vw, 2rem);
    font-weight: 700;
    line-height: 1.3;
    max-width: 90%;
    overflow-wrap: anywhere;
    pointer-events: none;
}

.minimal-file-dropzone input[type="file"] {
    cursor: pointer;
    height: 100%;
    inset: 0;
    opacity: 0;
    position: absolute;
    width: 100%;
}

/* One visual language for compact destructive actions. Navigation close buttons are separate. */
.compact-delete-control,
.material-icon-button-danger,
.icon-button-danger,
.question-row-delete,
.catalog-basket-remove,
.task-basket-remove,
.news-pending-remove,
.relation-upload-remove {
    --destructive-control-size: var(--material-row-control-size, 30px);
    align-items: center !important;
    aspect-ratio: 1 / 1;
    background: var(--bad, #d77d70) !important;
    border: 1px solid var(--bad, #d77d70) !important;
    border-radius: 4px !important;
    box-sizing: border-box;
    color: #fff !important;
    display: inline-flex !important;
    flex: 0 0 var(--destructive-control-size) !important;
    font-size: 0 !important;
    font-weight: 700;
    height: var(--destructive-control-size) !important;
    justify-content: center !important;
    line-height: 1 !important;
    max-height: var(--destructive-control-size) !important;
    max-width: var(--destructive-control-size) !important;
    min-height: var(--destructive-control-size) !important;
    min-width: var(--destructive-control-size) !important;
    padding: 0 !important;
    text-align: center;
    text-decoration: none;
    position: relative;
    width: var(--destructive-control-size) !important;
}

.compact-delete-control span,
.material-icon-button-danger span,
.icon-button-danger span {
    color: inherit;
    display: block;
    font-size: 0;
    line-height: 1;
}

.material-icon-button-danger > img,
.icon-button-danger > img {
    display: none;
}

.compact-delete-control::before,
.compact-delete-control::after,
.material-icon-button-danger::before,
.material-icon-button-danger::after,
.icon-button-danger::before,
.icon-button-danger::after,
.question-row-delete::before,
.question-row-delete::after,
.catalog-basket-remove::before,
.catalog-basket-remove::after,
.task-basket-remove::before,
.task-basket-remove::after,
.news-pending-remove::before,
.news-pending-remove::after,
.relation-upload-remove::before,
.relation-upload-remove::after {
    background: #fff;
    border-radius: 2px;
    content: "";
    height: max(2px, calc(var(--destructive-control-size) * 0.085));
    left: 50%;
    position: absolute;
    top: 50%;
    transform-origin: center;
    width: calc(var(--destructive-control-size) * 0.46);
}

.compact-delete-control::before,
.material-icon-button-danger::before,
.icon-button-danger::before,
.question-row-delete::before,
.catalog-basket-remove::before,
.task-basket-remove::before,
.news-pending-remove::before,
.relation-upload-remove::before {
    transform: translate(-50%, -50%) rotate(45deg);
}

.compact-delete-control::after,
.material-icon-button-danger::after,
.icon-button-danger::after,
.question-row-delete::after,
.catalog-basket-remove::after,
.task-basket-remove::after,
.news-pending-remove::after,
.relation-upload-remove::after {
    transform: translate(-50%, -50%) rotate(-45deg);
}

.compact-delete-control:hover,
.material-icon-button-danger:hover,
.icon-button-danger:hover,
.question-row-delete:hover,
.catalog-basket-remove:hover,
.task-basket-remove:hover,
.news-pending-remove:hover,
.relation-upload-remove:hover {
    background: #c9675d !important;
    border-color: #c9675d !important;
    transform: translateY(-1px);
}

.compact-delete-control:focus-visible,
.material-icon-button-danger:focus-visible,
.icon-button-danger:focus-visible,
.question-row-delete:focus-visible,
.catalog-basket-remove:focus-visible,
.task-basket-remove:focus-visible,
.news-pending-remove:focus-visible,
.relation-upload-remove:focus-visible {
    outline: 3px solid rgba(215, 125, 112, .35);
    outline-offset: 2px;
}

.compact-delete-control:disabled,
.material-icon-button-danger:disabled,
.icon-button-danger:disabled,
.question-row-delete:disabled,
.catalog-basket-remove:disabled,
.task-basket-remove:disabled,
.news-pending-remove:disabled,
.relation-upload-remove:disabled {
    cursor: default;
    opacity: .55;
    transform: none;
}