@font-face {
    font-family: "Manrope";
    src: url("fonts/Manrope-Variable.c329d9ac3c7b.ttf") format("truetype");
    font-style: normal;
    font-weight: 200 800;
    font-display: swap;
}

:root {
    --color-bg: #f5f6f7;
    --color-surface: #ffffff;
    --color-surface-soft: #f7f8f9;
    --color-text: #25282c;
    --color-muted: #697077;
    --color-border: #e2e5e8;
    --color-border-strong: #cfd3d7;
    --color-success: #26734d;
    --color-danger: #b42318;
    --color-accent: #34383d;
    --color-accent-hover: #202327;
    --color-focus: #159bd3;
    --shadow-soft: 0 18px 50px rgba(31, 35, 39, 0.08);
    --radius-small: 10px;
    --radius-medium: 18px;
    --page-width: 1180px;
    color-scheme: light;
}

* {
    box-sizing: border-box;
}

html {
    scrollbar-gutter: stable;
    font-family: "Manrope", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.5;
    color: var(--color-text);
    background: var(--color-bg);
}

body {
    display: flex;
    min-width: 0;
    min-height: 100vh;
    margin: 0;
    flex-direction: column;
    background: var(--color-bg);
}

a {
    color: var(--color-accent);
    text-underline-offset: 0.18em;
}

a:hover {
    color: var(--color-accent-hover);
}

:focus-visible {
    outline: 3px solid rgba(21, 155, 211, 0.35);
    outline-offset: 3px;
}

.site-header {
    position: sticky;
    z-index: 20;
    top: 0;
    border-bottom: 1px solid rgba(226, 229, 232, 0.85);
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(12px);
}

.site-header__inner {
    display: flex;
    width: min(calc(100% - 40px), var(--page-width));
    min-height: 72px;
    margin: 0 auto;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
}

.brand {
    display: inline-flex;
    flex: 0 0 auto;
    align-items: center;
    gap: 11px;
    color: var(--color-text);
    font-size: 1.08rem;
    font-weight: 720;
    letter-spacing: -0.02em;
    text-decoration: none;
}

.brand__mark {
    display: grid;
    width: 44px;
    height: 44px;
    padding: 5px;
    place-items: center;
    overflow: hidden;
    border-radius: 12px;
    background: var(--color-accent);
}

.brand__mark img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.main-nav {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 4px;
    font-size: 0.92rem;
}

.mobile-nav {
    display: none;
    position: relative;
}

.mobile-nav > summary {
    display: inline-flex;
    min-height: 42px;
    padding: 0 14px;
    align-items: center;
    border: 1px solid var(--color-border);
    border-radius: 10px;
    font-weight: 700;
    list-style: none;
    cursor: pointer;
}

.mobile-nav > summary::-webkit-details-marker {
    display: none;
}

.mobile-nav__panel {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    display: grid;
    width: min(300px, calc(100vw - 28px));
    max-height: calc(100vh - 96px);
    padding: 9px;
    overflow-y: auto;
    border: 1px solid var(--color-border);
    border-radius: 14px;
    background: var(--color-surface);
    box-shadow: var(--shadow-soft);
}

.mobile-nav__panel a,
.mobile-nav__logout {
    display: flex;
    width: 100%;
    min-height: 43px;
    padding: 9px 12px;
    align-items: center;
    justify-content: space-between;
    border: 0;
    border-radius: 8px;
    color: var(--color-text);
    background: transparent;
    font: inherit;
    font-weight: 650;
    text-decoration: none;
}

.mobile-nav__panel a:hover,
.mobile-nav__logout:hover {
    color: var(--color-text);
    background: #f1f2f3;
}

.mobile-nav__panel form {
    margin-top: 6px;
    padding-top: 6px;
    border-top: 1px solid var(--color-border);
}

.mobile-nav__label {
    padding: 13px 12px 5px;
    color: var(--color-muted);
    font-size: 0.68rem;
    font-weight: 750;
    letter-spacing: 0.09em;
    text-transform: uppercase;
}

.main-nav > a,
.nav-menu > summary {
    display: inline-flex;
    min-height: 42px;
    padding: 0 12px;
    align-items: center;
    gap: 7px;
    border-radius: var(--radius-small);
    color: #4e545a;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
}

.main-nav > a:hover,
.nav-menu > summary:hover,
.nav-menu[open] > summary {
    color: var(--color-text);
    background: #f1f2f3;
}

.main-nav > a.button {
    color: #fff;
    background: var(--color-accent);
}

.main-nav > a.button:hover {
    color: #fff;
    background: var(--color-accent-hover);
}

.nav-badge {
    display: inline-grid;
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    place-items: center;
    border-radius: 999px;
    color: #fff;
    background: var(--color-accent);
    font-size: 0.72rem;
}

.nav-menu {
    position: relative;
}

.nav-menu > summary {
    list-style: none;
}

.nav-menu > summary::-webkit-details-marker {
    display: none;
}

.nav-menu > summary::after {
    content: "";
    width: 6px;
    height: 6px;
    margin-top: -3px;
    transform: rotate(45deg);
    border-right: 1.5px solid currentColor;
    border-bottom: 1.5px solid currentColor;
}

.nav-menu__panel {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    display: grid;
    width: 220px;
    padding: 8px;
    border: 1px solid var(--color-border);
    border-radius: 14px;
    background: var(--color-surface);
    box-shadow: var(--shadow-soft);
}

.nav-menu__panel--right {
    right: 0;
    left: auto;
}

.nav-menu__panel a,
.nav-menu__button {
    display: flex;
    width: 100%;
    min-height: 40px;
    padding: 9px 11px;
    align-items: center;
    border: 0;
    border-radius: 8px;
    color: var(--color-text);
    background: transparent;
    font: inherit;
    font-weight: 550;
    text-align: left;
    text-decoration: none;
    cursor: pointer;
}

.nav-menu__panel a:hover,
.nav-menu__button:hover {
    background: #f1f2f3;
}

.nav-menu__panel form {
    margin: 4px 0 0;
    padding-top: 4px;
    border-top: 1px solid var(--color-border);
}

.page-container,
.flash-messages {
    width: min(calc(100% - 40px), var(--page-width));
    margin-right: auto;
    margin-left: auto;
}

.page-container {
    flex: 1 0 auto;
    padding: 48px 0 72px;
}

.site-footer {
    flex: 0 0 auto;
    border-top: 1px solid var(--color-border);
    background: var(--color-surface);
}

.site-footer__inner {
    display: flex;
    width: min(calc(100% - 40px), var(--page-width));
    min-height: 68px;
    margin: 0 auto;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    color: var(--color-muted);
    font-size: 0.86rem;
}

.date-input-control {
    position: relative;
    display: flex;
    width: min(100%, 620px);
    align-items: stretch;
    gap: 8px;
}

.date-input-control > input[data-russian-date] {
    min-width: 0;
    flex: 1 1 auto;
}

.date-input-control__button {
    flex: 0 0 auto;
    padding: 0 13px;
    border: 1px solid #cfd3d7;
    border-radius: 9px;
    color: var(--color-text);
    background: #f1f2f3;
}

.date-input-control__native {
    position: absolute;
    right: 0;
    bottom: 0;
    width: 1px !important;
    height: 1px;
    padding: 0 !important;
    opacity: 0;
    pointer-events: none;
}

.flash-messages {
    padding-top: 18px;
}

.flash-message {
    margin: 0 0 8px;
    padding: 13px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-small);
    background: var(--color-surface);
}

h1,
h2,
h3 {
    margin-top: 0;
    overflow-wrap: anywhere;
    line-height: 1.15;
    letter-spacing: -0.035em;
}

h1 {
    font-size: clamp(1.85rem, 3.5vw, 2.75rem);
}

h2 {
    font-size: clamp(1.3rem, 2.5vw, 1.65rem);
}

p {
    max-width: 72ch;
    overflow-wrap: anywhere;
}

.muted,
.table-secondary {
    color: var(--color-muted);
}

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

button,
input,
select,
textarea {
    font: inherit;
}

input:not([type="checkbox"]):not([type="radio"]):not([type="submit"]),
select,
textarea {
    width: min(100%, 620px);
    padding: 11px 12px;
    border: 1px solid #cfd3d7;
    border-radius: 9px;
    color: var(--color-text);
    background: var(--color-surface);
}

textarea {
    min-height: 120px;
    resize: vertical;
}

label {
    font-weight: 600;
}

form p {
    display: grid;
    gap: 6px;
}

.user-autocomplete {
    position: relative;
    width: min(100%, 620px);
}

.user-autocomplete__native {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    overflow: hidden;
    opacity: 0;
    pointer-events: none;
}

.user-autocomplete .user-autocomplete__input {
    width: 100%;
}

.user-autocomplete__list {
    position: absolute;
    z-index: 35;
    top: calc(100% + 6px);
    right: 0;
    left: 0;
    max-height: min(320px, 45vh);
    padding: 6px;
    overflow-y: auto;
    border: 1px solid var(--color-border-strong);
    border-radius: 11px;
    background: var(--color-surface);
    box-shadow: 0 16px 36px rgba(31, 35, 39, 0.16);
}

.user-autocomplete__option {
    display: block;
    width: 100%;
    min-height: 0;
    padding: 10px 11px;
    border: 0;
    border-radius: 7px;
    color: var(--color-text);
    background: transparent;
    text-align: left;
}

.user-autocomplete__option:hover,
.user-autocomplete__option.is-active {
    color: var(--color-text);
    background: var(--color-surface-soft);
}

.user-autocomplete__empty {
    display: block;
    padding: 10px 11px;
    color: var(--color-muted);
    font-size: 0.88rem;
}

.helptext {
    color: var(--color-muted);
    font-size: 0.84rem;
}

.errorlist {
    margin: 6px 0;
    padding: 10px 14px;
    border-left: 3px solid #a63d40;
    border-radius: 7px;
    color: #7d292c;
    background: #fff0f0;
    list-style: none;
}

fieldset {
    min-width: 0;
    margin: 18px 0;
    padding: 20px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-small);
    background: var(--color-surface);
}

legend {
    padding: 0 8px;
    font-weight: 700;
}

button,
.button {
    display: inline-flex;
    min-height: 44px;
    padding: 10px 18px;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--color-accent);
    border-radius: var(--radius-small);
    color: #fff;
    background: var(--color-accent);
    font-weight: 650;
    text-decoration: none;
    text-align: center;
    cursor: pointer;
}

button:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

button:hover,
.button:hover {
    color: #fff;
    background: var(--color-accent-hover);
}

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

.button--secondary:hover {
    color: var(--color-text);
    background: #eceeef;
}

.button--quiet {
    color: var(--color-muted);
    border-color: transparent;
    background: transparent;
}

.button--quiet:hover {
    color: var(--color-text);
    border-color: var(--color-border);
    background: #eceeef;
}

.button--small {
    min-height: 38px;
    padding: 7px 13px;
}

table {
    width: 100%;
    border-spacing: 0;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-small);
    background: var(--color-surface);
}

th,
td {
    padding: 12px 14px;
    border-bottom: 1px solid var(--color-border);
    text-align: left;
}

tr:last-child td {
    border-bottom: 0;
}

.table-wrap {
    width: 100%;
    overflow-x: auto;
    border-radius: var(--radius-small);
    box-shadow: 0 8px 24px rgba(31, 35, 39, 0.04);
}

.table-wrap table {
    min-width: 760px;
}

th {
    color: var(--color-muted);
    background: #f7f8f8;
    font-size: 0.76rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

td strong,
.table-primary {
    display: block;
}

.table-primary {
    font-weight: 700;
    text-decoration: none;
}

.table-primary span,
.table-secondary {
    display: block;
    margin-top: 3px;
    font-size: 0.84rem;
    font-weight: 500;
}

.table-actions {
    white-space: nowrap;
}

.table-actions a + a {
    margin-left: 12px;
}

.journal-legend {
    display: flex;
    margin-bottom: 18px;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px 18px;
    font-size: 0.8rem;
}

.journal-legend > span {
    display: inline-flex;
    align-items: center;
    gap: 7px;
}

.journal-dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: #aeb5bb;
}

.journal-dot--present {
    background: #4f8a67;
}

.journal-dot--absent {
    background: #a76a6a;
}

.journal-dot--homework {
    background: #4f7f9c;
}

.course-journal-wrap {
    width: 100%;
    max-height: 72vh;
    overflow: auto;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
    background: var(--color-surface);
    box-shadow: var(--shadow-soft);
}

.course-journal-wrap:focus-visible {
    outline-offset: 4px;
}

.course-journal-table {
    width: 100%;
    min-width: max-content;
    border: 0;
    border-collapse: separate;
    border-spacing: 0;
    border-radius: 0;
}

.course-journal-table th,
.course-journal-table td {
    border-right: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    vertical-align: top;
}

.course-journal-table tr > :last-child {
    border-right: 0;
}

.course-journal-table thead th {
    position: sticky;
    z-index: 3;
    top: 0;
}

.course-journal-table thead tr:nth-child(2) th {
    top: 96px;
}

.journal-sticky-column {
    position: sticky;
    z-index: 2;
    left: 0;
    width: 240px;
    min-width: 240px;
    max-width: 240px;
    background: #f7f8f8;
}

.course-journal-table thead .journal-sticky-column {
    z-index: 5;
}

.journal-student-heading {
    vertical-align: middle !important;
    color: var(--color-text);
    font-size: 0.88rem;
    text-align: center;
}

.journal-lesson-heading {
    height: 96px;
    padding: 10px 14px;
    color: var(--color-text);
    background: #eef0f2;
    text-align: center;
    text-transform: none;
}

.journal-lesson-heading a {
    display: block;
    font-size: 0.88rem;
    font-weight: 750;
}

.journal-lesson-heading small {
    display: block;
    margin-top: 3px;
    color: var(--color-muted);
    font-size: 0.72rem;
    font-weight: 600;
}

.journal-subheading {
    width: 140px;
    min-width: 140px;
    padding: 8px 10px;
    color: var(--color-text);
    font-size: 0.72rem;
    text-align: center;
}

.journal-subheading--attendance {
    background: #f7eaee;
}

.journal-subheading--homework {
    background: #e7f1f8;
}

.journal-student-name {
    padding: 13px 15px;
    color: var(--color-text);
    text-transform: none;
}

.journal-student-name strong,
.journal-student-name small {
    display: block;
}

.journal-student-name strong {
    font-size: 0.82rem;
}

.journal-student-name small {
    margin-top: 4px;
    color: var(--color-muted);
    font-size: 0.68rem;
    font-weight: 500;
}

.journal-cell {
    width: 140px;
    min-width: 140px;
    padding: 13px 11px;
    font-size: 0.76rem;
    text-align: center;
}

.journal-attendance--present {
    color: #276143;
    background: #f1f8f4;
}

.journal-attendance--absent,
.journal-attendance--excused {
    color: #73474a;
    background: #fbf3f3;
}

.journal-attendance--late {
    color: #755d1a;
    background: #fff9e8;
}

.journal-attendance--dismissed {
    color: #355375;
    background: #f0f4f9;
}

.journal-attendance > span,
.journal-attendance > small {
    display: block;
}

.journal-attendance > small {
    margin-top: 4px;
    color: var(--color-muted);
}

.journal-comment-tip {
    width: 20px;
    height: 20px;
    margin: 7px auto 0;
    background-size: 14px 14px;
}

.journal-comment-tip:not([data-tooltip-enhanced="true"]):hover::after,
.journal-comment-tip:not([data-tooltip-enhanced="true"]):focus-visible::after {
    width: min(320px, 78vw);
    white-space: normal;
}

.journal-homework strong,
.journal-homework small {
    display: block;
}

.journal-homework small {
    margin-top: 4px;
    color: var(--color-muted);
}

.journal-homework.is-done {
    color: #315f78;
    background: #f0f7fb;
}

.journal-homework.is-submitted {
    color: #4b5575;
    background: #f2f3fa;
}

.journal-homework.is-assigned {
    color: #755d1a;
    background: #fff9e8;
}

.journal-cell--not-enrolled {
    color: #a5aaae;
    background: #fafafa;
}

.journal-former-student td {
    opacity: 0.68;
    background-image: linear-gradient(rgba(245, 246, 247, 0.35), rgba(245, 246, 247, 0.35));
}

.journal-former-student .journal-student-name {
    color: var(--color-muted);
    background: #eef0f1;
}

.journal-summary-row > * {
    border-top: 2px solid #c9ced2;
}

.journal-summary-title {
    padding: 20px 16px;
    vertical-align: middle !important;
    color: var(--color-text);
    background: #eaf1e7;
    font-size: 0.86rem;
    text-align: center;
    text-transform: none;
}

.journal-summary-cell {
    width: 280px;
    min-width: 280px;
    max-width: 280px;
    padding: 18px;
    color: #4f555b;
    font-size: 0.78rem;
    line-height: 1.55;
    white-space: normal;
}

.journal-summary-cell p {
    margin: 0;
}

.journal-summary-cell p + p {
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid var(--color-border);
}

.course-journal-table .is-cancelled {
    color: #858b90;
    background: #eceeef;
}

.journal-empty {
    padding: 28px;
    color: var(--color-muted);
    text-align: center;
}

.page-heading {
    display: flex;
    margin-bottom: 34px;
    align-items: flex-end;
    justify-content: space-between;
    gap: 28px;
}

.page-heading h1 {
    margin-bottom: 10px;
}

.page-heading > div,
.section-heading > div,
.course-workspace__heading > div,
.lesson-learning-hero > div {
    min-width: 0;
}

.page-heading--stacked {
    align-items: flex-start;
    flex-direction: column;
    gap: 24px;
}

.page-heading > .button {
    flex-shrink: 0;
}

.page-heading .eyebrow {
    margin-bottom: 12px;
}

.page-heading--actions {
    align-items: center;
}

.page-lead {
    margin: 0;
    color: var(--color-muted);
    font-size: 1.04rem;
}

.filter-bar {
    display: flex;
    margin-bottom: 28px;
    padding: 16px;
    align-items: end;
    flex-wrap: wrap;
    gap: 12px;
    border: 1px solid var(--color-border);
    border-radius: 14px;
    background: var(--color-surface);
}

.filter-bar label {
    display: grid;
    min-width: 170px;
    gap: 5px;
    color: var(--color-muted);
    font-size: 0.78rem;
}

.filter-bar__search {
    flex: 1 1 260px;
}

.filter-bar input,
.filter-bar select {
    min-height: 42px;
}

.filter-bar button,
.filter-bar .button {
    min-height: 42px;
}

.filter-bar--compact {
    max-width: 720px;
}

.pagination {
    display: flex;
    margin-top: 28px;
    align-items: center;
    justify-content: center;
    gap: 16px;
    color: var(--color-muted);
    font-size: 0.88rem;
}

.pagination a,
.pagination .is-disabled {
    padding: 8px 12px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    background: var(--color-surface);
    text-decoration: none;
}

.pagination .is-disabled {
    opacity: 0.45;
}

.role-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.chip,
.status {
    display: inline-flex;
    width: fit-content;
    min-height: 28px;
    padding: 4px 10px;
    align-items: center;
    border-radius: 999px;
    color: #4d5359;
    background: #eff1f2;
    font-size: 0.76rem;
    font-weight: 700;
}

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

.status--active,
.status--scheduled {
    color: #276143;
    background: #e7f4ec;
}

.status--draft {
    color: #755d1a;
    background: #fff5d7;
}

.status--completed {
    color: #46515a;
    background: #e9edf0;
}

.status--archived,
.status--cancelled {
    color: #6d5353;
    background: #f3eaea;
}

.lesson-status.status--scheduled {
    color: #755d1a;
    background: #fff5d7;
}

.lesson-status.status--completed {
    color: #276143;
    background: #e7f4ec;
}

.lesson-status.status--cancelled {
    color: #7a3f3f;
    background: #f7e5e5;
}

.empty-state {
    padding: 28px;
    border: 1px dashed #ccd1d5;
    border-radius: 12px;
    color: var(--color-muted);
    background: rgba(255, 255, 255, 0.5);
    text-align: center;
}

.metric-grid {
    display: grid;
    margin-bottom: 30px;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
}

.metric-card {
    display: grid;
    min-height: 132px;
    padding: 22px;
    align-content: space-between;
    border: 1px solid var(--color-border);
    border-radius: 14px;
    color: var(--color-text);
    background: var(--color-surface);
    text-decoration: none;
    transition: border-color 160ms ease, transform 160ms ease;
}

.metric-card:hover,
.course-card:hover,
.list-card:hover {
    transform: translateY(-2px);
    border-color: #c4c9cd;
}

.metric-card__value {
    font-size: 2rem;
    font-weight: 750;
    letter-spacing: -0.04em;
}

.metric-card__label {
    color: var(--color-muted);
    font-size: 0.86rem;
}

.dashboard-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    align-items: start;
    gap: 24px;
}

.dashboard-main,
.dashboard-sidebar {
    display: grid;
    gap: 24px;
}

.content-section,
.sidebar-card {
    padding: clamp(22px, 4vw, 32px);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
    background: var(--color-surface);
}

.section-heading {
    display: flex;
    margin-bottom: 22px;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}

.section-heading h2 {
    margin: 0;
    font-size: 1.3rem;
}

.section-heading--wrap {
    flex-wrap: wrap;
}

.section-kicker {
    margin: 0 0 5px;
    color: var(--color-muted);
    font-size: 0.72rem;
    font-weight: 750;
    letter-spacing: 0.09em;
    text-transform: uppercase;
}

.dashboard-upcoming {
    border-color: #cfd4d8;
    background: linear-gradient(180deg, #ffffff 0%, #fafbfb 100%);
}

.dashboard-upcoming__schedule-link {
    min-height: 40px;
    padding: 9px 14px;
    font-size: 0.84rem;
}

.dashboard-upcoming__note {
    margin: -7px 0 20px;
    padding: 12px 14px;
    border-left: 3px solid var(--color-text);
    border-radius: 0 9px 9px 0;
    color: var(--color-muted);
    background: var(--color-surface-soft);
    font-size: 0.88rem;
    line-height: 1.5;
}

.text-link {
    flex: 0 0 auto;
    font-size: 0.84rem;
    font-weight: 700;
}

.item-list,
.compact-list,
.sidebar-list {
    display: grid;
    gap: 9px;
}

.list-card {
    display: flex;
    min-height: 72px;
    padding: 13px 15px;
    align-items: center;
    gap: 16px;
    border: 1px solid var(--color-border);
    border-radius: 11px;
    color: var(--color-text);
    background: #fff;
    text-decoration: none;
    transition: border-color 160ms ease, transform 160ms ease;
}

.list-card__date {
    display: grid;
    min-width: 76px;
    color: var(--color-muted);
    font-size: 0.78rem;
}

.list-card__date strong {
    color: var(--color-text);
    font-size: 0.94rem;
}

.list-card__body {
    display: grid;
    min-width: 0;
    flex: 1;
    gap: 3px;
}

.list-card__body span {
    overflow: hidden;
    color: var(--color-muted);
    font-size: 0.82rem;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.list-card__arrow {
    color: #a0a6ab;
    font-size: 1.1rem;
}

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

.course-card-grid--wide {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.course-card {
    display: flex;
    min-height: 190px;
    padding: 22px;
    align-items: flex-start;
    flex-direction: column;
    border: 1px solid var(--color-border);
    border-radius: 14px;
    color: var(--color-text);
    background: var(--color-surface);
    text-decoration: none;
    transition: border-color 160ms ease, transform 160ms ease;
}

.course-card h2,
.course-card h3 {
    margin: auto 0 4px;
    font-size: 1.28rem;
}

.course-card p {
    margin: 0 0 14px;
    color: var(--color-muted);
}

.course-card__meta {
    color: var(--color-muted);
    font-size: 0.78rem;
}

.compact-stat-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 10px;
}

.compact-stat-grid a {
    display: grid;
    min-height: 108px;
    padding: 16px;
    align-content: space-between;
    border-radius: 11px;
    color: var(--color-text);
    background: #f5f6f7;
    text-decoration: none;
}

.compact-stat-grid strong {
    font-size: 1.6rem;
}

.compact-stat-grid span {
    color: var(--color-muted);
    font-size: 0.76rem;
}

.quick-actions {
    display: flex;
    margin-top: 18px;
    flex-wrap: wrap;
    gap: 9px;
}

.subsection-title {
    margin: 26px 0 12px;
    font-size: 1rem;
}

.course-members-page h2 {
    margin: 42px 0 16px;
}

.compact-list a,
.sidebar-list a {
    display: flex;
    padding: 11px 0;
    justify-content: space-between;
    gap: 14px;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text);
    text-decoration: none;
}

.compact-list a:last-child,
.sidebar-list a:last-child {
    border-bottom: 0;
}

.sidebar-list a {
    display: grid;
    gap: 3px;
}

.sidebar-list a span {
    color: var(--color-muted);
    font-size: 0.76rem;
}

.sidebar-list a.is-unread strong::before {
    content: "";
    display: inline-block;
    width: 7px;
    height: 7px;
    margin-right: 7px;
    border-radius: 50%;
    background: var(--color-focus);
}

.inline-filter {
    display: flex;
    align-items: center;
    gap: 9px;
}

.inline-filter select {
    width: auto;
    min-width: 190px;
}

.parent-summary {
    display: grid;
    margin-bottom: 18px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
}

.parent-summary div {
    display: grid;
    padding: 14px;
    gap: 6px;
    border-radius: 10px;
    background: #f5f6f7;
}

.parent-summary span {
    color: var(--color-muted);
    font-size: 0.76rem;
}

.parent-summary strong {
    font-size: 1.35rem;
}

.segmented-control {
    display: inline-flex;
    padding: 4px;
    border: 1px solid var(--color-border);
    border-radius: 11px;
    background: var(--color-surface);
}

.segmented-control a {
    padding: 8px 14px;
    border-radius: 8px;
    color: var(--color-muted);
    font-size: 0.84rem;
    font-weight: 700;
    text-decoration: none;
}

.segmented-control a.is-active {
    color: #fff;
    background: var(--color-accent);
}

.chat-category-bar {
    display: flex;
    margin-bottom: 18px;
    align-items: center;
    gap: 9px;
}

.chat-category-tabs {
    max-width: 100%;
    overflow-x: auto;
    scrollbar-width: thin;
}

.chat-category-tabs a {
    flex: 0 0 auto;
    white-space: nowrap;
}

.week-navigation {
    display: flex;
    margin-bottom: 18px;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.week-grid {
    display: grid;
    grid-template-columns: repeat(7, minmax(150px, 1fr));
    gap: 8px;
    overflow-x: auto;
}

.week-day {
    min-height: 280px;
    padding: 12px;
    border: 1px solid var(--color-border);
    border-radius: 11px;
    background: var(--color-surface);
}

.week-day > header {
    display: flex;
    margin-bottom: 12px;
    justify-content: space-between;
    color: var(--color-muted);
    font-size: 0.82rem;
}

.week-lesson {
    display: grid;
    margin-bottom: 8px;
    padding: 10px;
    gap: 2px;
    border-left: 3px solid #9aa1a7;
    border-radius: 7px;
    color: var(--color-text);
    background: #f5f6f7;
    text-decoration: none;
}

.week-lesson span,
.week-lesson small,
.week-day__empty {
    color: var(--color-muted);
    font-size: 0.73rem;
}

.status-border--scheduled {
    border-left-color: #c79a2b;
}

.status-border--completed {
    border-left-color: #4f8a67;
}

.status-border--cancelled {
    border-left-color: #a76a6a;
}

.list-card.status-border--scheduled,
.list-card.status-border--completed,
.list-card.status-border--cancelled {
    border-left-width: 3px;
}

.chat-list {
    display: grid;
    width: 100%;
    gap: 9px;
}

.chat-list__item {
    display: flex;
    min-height: 78px;
    padding: 13px 16px;
    align-items: center;
    gap: 14px;
    border: 1px solid var(--color-border);
    border-radius: 13px;
    color: var(--color-text);
    background: var(--color-surface);
    text-decoration: none;
}

.chat-list__item.is-unread {
    border-color: #b7d8e6;
    background: #f8fdff;
}

.chat-avatar {
    display: grid;
    width: 44px;
    height: 44px;
    flex: 0 0 auto;
    place-items: center;
    border-radius: 13px;
    color: #fff;
    background: var(--color-accent);
    font-weight: 750;
}

.chat-list__body {
    display: grid;
    min-width: 0;
    flex: 1;
    gap: 3px;
}

.chat-list__body span {
    color: var(--color-muted);
    font-size: 0.8rem;
}

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

.notification-card {
    display: flex;
    padding: 20px;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    border: 1px solid var(--color-border);
    border-radius: 13px;
    background: var(--color-surface);
}

.notification-card.is-unread {
    border-left: 4px solid var(--color-focus);
}

.notification-card h2 {
    margin: 7px 0;
    font-size: 1.05rem;
}

.notification-card p {
    margin: 0;
    color: var(--color-muted);
}

.notification-card__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    color: var(--color-muted);
    font-size: 0.72rem;
}

.button--full {
    width: 100%;
}

.button--danger {
    border-color: #b84a50;
    color: #fff;
    background: #b84a50;
}

.button--danger:hover {
    color: #fff;
    background: #96383d;
}

.auth-shell {
    display: grid;
    min-height: calc(100vh - 190px);
    gap: 20px;
    place-items: center;
}

.auth-card,
.form-card {
    width: min(100%, 500px);
    padding: clamp(26px, 5vw, 42px);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
    background: var(--color-surface);
    box-shadow: var(--shadow-soft);
}

.auth-card--wide {
    width: min(100%, 650px);
}

.auth-card h1 {
    margin-bottom: 12px;
    font-size: 2.15rem;
}

.auth-card form {
    margin-top: 28px;
}

.auth-card__footer {
    display: flex;
    margin-top: 22px;
    padding-top: 18px;
    justify-content: space-between;
    gap: 14px;
    border-top: 1px solid var(--color-border);
    color: var(--color-muted);
    font-size: 0.84rem;
}

.form-page {
    width: 100%;
    margin: 0 auto;
}

.form-page--course-settings {
    width: 100%;
}

.homework-submission-status {
    color: var(--color-muted);
    font-size: 0.9rem;
}

.homework-submission-status.is-error {
    color: var(--color-danger, #b42318);
}

.form-card {
    width: 100%;
}

.form-actions {
    display: flex;
    margin-top: 24px;
    flex-wrap: wrap;
    gap: 10px;
}

.profile-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(300px, 0.8fr);
    align-items: start;
    gap: 20px;
}

.profile-courses-section {
    grid-column: 1 / -1;
}


.profile-course-list,
.teacher-course-groups {
    display: grid;
    gap: 10px;
}

.profile-course-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.profile-course-item,
.teacher-course-link {
    display: flex;
    min-width: 0;
    padding: 14px 16px;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    background: var(--color-surface-soft);
}

.profile-course-item__body,
.teacher-course-link > span:first-child {
    display: grid;
    min-width: 0;
    gap: 3px;
}

.profile-course-item__body a,
.profile-course-item__body strong,
.teacher-course-link {
    overflow-wrap: anywhere;
    color: var(--color-text);
    font-weight: 750;
    text-decoration: none;
}

.profile-course-item__body span,
.teacher-course-link small,
.teacher-course-group__identity small {
    color: var(--color-muted);
    font-size: 0.8rem;
    font-weight: 500;
}

.teacher-course-group {
    overflow: hidden;
    border: 1px solid var(--color-border);
    border-radius: 14px;
    background: var(--color-surface);
}

.teacher-course-group > summary {
    display: flex;
    min-height: 76px;
    padding: 14px 18px;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    cursor: pointer;
    list-style: none;
}

.teacher-course-group > summary::-webkit-details-marker {
    display: none;
}

.teacher-course-group > summary:hover {
    background: var(--color-surface-soft);
}

.teacher-course-group__identity {
    display: flex;
    min-width: 0;
    align-items: center;
    gap: 12px;
}

.teacher-course-group__identity > span:last-child {
    display: grid;
    min-width: 0;
    gap: 3px;
}

.teacher-course-group__toggle {
    color: var(--color-muted);
    font-size: 1.65rem;
    transform: rotate(90deg);
    transition: transform 160ms ease;
}

.teacher-course-group[open] .teacher-course-group__toggle {
    transform: rotate(-90deg);
}

.teacher-course-group__courses {
    display: grid;
    padding: 0;
    gap: 8px;
    border-top: 1px solid var(--color-border);
}

.teacher-course-link {
    margin: 10px 14px 0;
}

.teacher-course-link:last-child {
    margin-bottom: 14px;
}

.teacher-course-link:hover {
    border-color: var(--color-accent);
}

.profile-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.profile-actions form {
    margin: 0;
}

.definition-list {
    margin: 24px 0 0;
}

.definition-list--columns {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 24px;
}

.definition-list div {
    display: grid;
    padding: 13px 0;
    grid-template-columns: 140px 1fr;
    gap: 16px;
    border-top: 1px solid var(--color-border);
}

.definition-list dt {
    color: var(--color-muted);
}

.definition-list dd {
    margin: 0;
    font-weight: 650;
}

.role-assignment-list {
    display: grid;
    gap: 9px;
}

.role-assignment-list > div {
    display: flex;
    min-height: 52px;
    padding: 10px 0;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    border-bottom: 1px solid var(--color-border);
}

.section-navigation {
    display: flex;
    margin-bottom: 24px;
    padding: 6px;
    gap: 4px;
    overflow-x: auto;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    background: var(--color-surface);
}

.section-navigation a {
    padding: 9px 13px;
    flex: 0 0 auto;
    border-radius: 8px;
    font-size: 0.84rem;
    font-weight: 700;
    text-decoration: none;
}

.section-navigation a:hover {
    background: #f1f2f3;
}

.section-navigation a.is-active {
    color: #fff;
    background: var(--color-accent);
}

.detail-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 310px;
    align-items: start;
    gap: 22px;
}

.detail-main,
.detail-sidebar {
    display: grid;
    gap: 20px;
}

.detail-sidebar {
    position: sticky;
    top: 96px;
}

.prose {
    color: #4f555b;
    line-height: 1.75;
}

.inline-form p {
    margin-bottom: 10px;
}

.people-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}

.people-list--compact {
    grid-template-columns: 1fr;
}

.people-list > div {
    display: flex;
    padding: 12px;
    align-items: center;
    gap: 11px;
    border-radius: 10px;
    background: #f5f6f7;
}

.people-list > div > span:last-child {
    display: grid;
}

.people-list small {
    color: var(--color-muted);
}

.staff-directory > div {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    position: relative;
}

.staff-directory__profile-link {
    position: absolute;
    z-index: 1;
    inset: 0;
    border-radius: inherit;
}

.staff-directory__profile-link:hover {
    background: rgba(34, 39, 43, 0.04);
}

.staff-directory__profile-link:focus-visible {
    outline: 2px solid var(--color-text);
    outline-offset: 2px;
}

.staff-directory > div > span:nth-child(2) {
    display: grid;
    min-width: 0;
    gap: 3px;
}

.staff-directory form {
    margin: 0;
    position: relative;
    z-index: 2;
}

.staff-directory .empty-state {
    grid-template-columns: 1fr;
}

.person-avatar {
    display: grid;
    width: 38px;
    height: 38px;
    flex: 0 0 auto;
    place-items: center;
    border-radius: 11px;
    color: #fff;
    background: #6b7278;
    font-size: 0.76rem;
    font-weight: 750;
}

.chat-header {
    display: grid;
    margin-bottom: 20px;
    grid-template-columns: 150px 1fr 150px;
    align-items: center;
    gap: 18px;
}

.chat-header h1 {
    margin: 0 0 4px;
    font-size: 1.7rem;
    text-align: center;
}

.chat-header p {
    margin: 0;
    color: var(--color-muted);
    text-align: center;
}

.back-link {
    font-size: 0.84rem;
    font-weight: 700;
}

.notice-panel {
    display: grid;
    margin-bottom: 14px;
    padding: 13px 16px;
    border: 1px solid #ddd7c6;
    border-radius: 10px;
    color: #645a3c;
    background: #fffaf0;
}

.chat-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 300px;
    align-items: start;
    gap: 18px;
}

.chat-layout--single {
    grid-template-columns: minmax(0, 860px);
    justify-content: center;
}

.chat-panel {
    overflow: hidden;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
    background: var(--color-surface);
}

.message-list {
    display: grid;
    height: min(62vh, 680px);
    min-height: 420px;
    padding: 24px;
    align-content: start;
    gap: 12px;
    overflow-y: auto;
    background: #f3f4f5;
}

.message-row {
    display: flex;
    justify-content: flex-start;
}

.message-row--self {
    justify-content: flex-end;
}

.message-bubble {
    width: fit-content;
    max-width: min(76%, 620px);
    padding: 12px 14px;
    border: 1px solid var(--color-border);
    border-radius: 14px 14px 14px 4px;
    background: var(--color-surface);
}

.message-row--self .message-bubble {
    border-color: #c9dce4;
    border-radius: 14px 14px 4px 14px;
    background: #eef8fc;
}

.message-bubble header {
    display: flex;
    margin-bottom: 5px;
    align-items: baseline;
    gap: 10px;
}

.message-bubble header strong {
    font-size: 0.79rem;
}

.message-bubble time,
.message-bubble small {
    color: var(--color-muted);
    font-size: 0.68rem;
}

.message-bubble p {
    margin: 0;
    line-height: 1.55;
}

.message-image-link {
    display: block;
    width: min(320px, 100%);
    margin-bottom: 9px;
    overflow: hidden;
    border-radius: 10px;
    background: #e7e9eb;
}

.message-image {
    display: block;
    width: 100%;
    max-height: 240px;
    object-fit: cover;
}

.message-action {
    display: flex;
    margin-top: 8px;
    align-items: center;
    gap: 7px;
}

.message-action input {
    min-height: 32px;
    padding: 6px 8px;
    font-size: 0.75rem;
}

.link-button {
    min-height: auto;
    padding: 2px;
    border: 0;
    color: var(--color-muted);
    background: transparent;
    font-size: 0.7rem;
    text-decoration: underline;
}

.link-button:hover {
    color: #7d292c;
    background: transparent;
}

.chat-composer {
    display: grid;
    padding: 14px;
    gap: 8px;
    border-top: 1px solid var(--color-border);
}

.chat-composer__controls {
    display: flex;
    align-items: flex-end;
    gap: 10px;
}

.chat-composer textarea {
    flex: 1 1 auto;
    min-height: 48px;
    max-height: 150px;
}

.chat-attach-button {
    display: grid;
    width: 46px;
    height: 46px;
    flex: 0 0 auto;
    border: 1px solid var(--color-border);
    border-radius: 10px;
    background: var(--color-surface-soft);
    cursor: pointer;
    place-items: center;
}

.chat-attach-button:hover {
    background: #e9ecef;
}

.chat-attach-button > svg {
    width: 21px;
    height: 21px;
}

.chat-attach-button input {
    position: absolute;
    width: 1px;
    height: 1px;
    opacity: 0;
    pointer-events: none;
}

.chat-composer__preview {
    display: grid;
    width: min(100%, 360px);
    padding: 8px;
    grid-template-columns: 52px minmax(0, 1fr) auto;
    align-items: center;
    gap: 10px;
    border: 1px solid var(--color-border);
    border-radius: 10px;
    background: var(--color-surface-soft);
}

.chat-composer__preview[hidden] {
    display: none;
}

.chat-composer__preview img {
    width: 52px;
    height: 44px;
    border-radius: 7px;
    object-fit: cover;
}

.chat-composer__preview span {
    overflow: hidden;
    font-size: 0.78rem;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.chat-composer__help {
    margin: 0;
    color: var(--color-muted);
    font-size: 0.72rem;
}

.chat-moderation {
    display: grid;
    gap: 14px;
}

.moderation-history summary {
    font-weight: 700;
    cursor: pointer;
}

.moderation-history ul {
    padding-left: 18px;
}

.moderation-history li {
    margin: 12px 0;
}

.moderation-history li span,
.moderation-history li small,
.moderation-history li time {
    display: block;
    font-size: 0.74rem;
}

.moderation-history li time,
.moderation-history li small {
    color: var(--color-muted);
}

.hero {
    display: grid;
    min-height: calc(100vh - 192px);
    grid-template-columns: minmax(0, 1.05fr) minmax(340px, 0.75fr);
    align-items: center;
    gap: clamp(48px, 8vw, 112px);
}

.hero__content {
    padding: 44px 0;
}

.eyebrow {
    margin: 0 0 18px;
    color: var(--color-muted);
    font-size: 0.78rem;
    font-weight: 750;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.hero h1 {
    max-width: 760px;
    margin-bottom: 24px;
}

.hero__lead {
    margin: 0;
    color: var(--color-muted);
    font-size: clamp(1.05rem, 2vw, 1.24rem);
}

.hero__actions {
    display: flex;
    margin-top: 34px;
    flex-wrap: wrap;
    gap: 12px;
}

.welcome-card {
    padding: clamp(28px, 5vw, 52px);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
    background: var(--color-surface);
    box-shadow: var(--shadow-soft);
}

.welcome-card__label {
    display: inline-block;
    margin-bottom: 30px;
    padding: 7px 11px;
    border-radius: 999px;
    color: var(--color-muted);
    background: #f0f1f2;
    font-size: 0.78rem;
    font-weight: 700;
}

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

.welcome-card__features {
    display: grid;
    margin: 32px 0 0;
    gap: 0;
}

.welcome-card__features div {
    display: grid;
    padding: 14px 0;
    grid-template-columns: 105px 1fr;
    gap: 18px;
    border-top: 1px solid var(--color-border);
}

.welcome-card__features dt {
    font-weight: 700;
}

.welcome-card__features dd {
    margin: 0;
}

@media (max-width: 1000px) {
    .main-nav--desktop {
        display: none;
    }

    .mobile-nav {
        display: block;
    }

    .dashboard-layout {
        grid-template-columns: 1fr;
    }

    .detail-layout,
    .chat-layout {
        grid-template-columns: 1fr;
    }

    .detail-sidebar {
        position: static;
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

    .metric-grid,
    .compact-stat-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .course-card-grid--wide {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .hero {
        min-height: auto;
        grid-template-columns: 1fr;
        gap: 16px;
    }
}

@media (max-width: 640px) {
    .site-header__inner,
    .page-container,
    .flash-messages,
    .site-footer__inner {
        width: min(calc(100% - 28px), var(--page-width));
    }

    .brand__mark {
        width: 40px;
        height: 40px;
    }

    .brand__name {
        font-size: 0.98rem;
    }

    .page-heading,
    .page-heading--actions {
        align-items: flex-start;
        flex-direction: column;
        gap: 16px;
    }

    .page-heading h1 {
        font-size: clamp(1.85rem, 7vw, 2.4rem);
    }

    .page-container {
        padding: 34px 0 52px;
    }

    .hero__content {
        padding: 24px 0;
    }

    .hero h1 {
        font-size: clamp(2.2rem, 12vw, 3.25rem);
    }

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

    .hero__actions .button {
        width: 100%;
    }

    .welcome-card__features div {
        grid-template-columns: 1fr;
        gap: 3px;
    }

    .metric-grid {
        gap: 9px;
    }

    .metric-card {
        min-height: 112px;
        padding: 17px;
    }

    .metric-card__value {
        font-size: 1.65rem;
    }

    .course-card-grid,
    .course-card-grid--wide,
    .dashboard-sidebar,
    .parent-summary {
        grid-template-columns: 1fr;
    }

    .profile-layout,
    .definition-list--columns,
    .people-list,
    .detail-sidebar {
        grid-template-columns: 1fr;
    }

    .definition-list div {
        grid-template-columns: 1fr;
        gap: 4px;
    }

    .staff-directory > div {
        grid-template-columns: auto minmax(0, 1fr);
    }

    .staff-directory form {
        grid-column: 1 / -1;
    }

    .staff-directory form button {
        width: 100%;
    }

    .auth-card__footer {
        flex-direction: column;
    }

    .chat-header {
        grid-template-columns: 1fr auto;
    }

    .chat-header > div {
        grid-column: 1 / -1;
        grid-row: 1;
    }

    .chat-header .back-link {
        grid-column: 1;
        grid-row: 2;
    }

    .chat-header > .button {
        grid-column: 2;
        grid-row: 2;
    }

    .message-list {
        height: 58vh;
        min-height: 360px;
        padding: 14px;
    }

    .message-bubble {
        max-width: 88%;
    }

    .filter-bar {
        display: grid;
        grid-template-columns: 1fr;
    }

    .filter-bar label,
    .filter-bar input,
    .filter-bar select,
    .filter-bar button,
    .filter-bar .button {
        width: 100%;
    }

    .section-heading {
        align-items: flex-start;
        flex-wrap: wrap;
    }

    .inline-filter {
        width: 100%;
        align-items: stretch;
        flex-direction: column;
    }

    .inline-filter select {
        width: 100%;
    }

    .list-card {
        align-items: flex-start;
    }

    .list-card__body span {
        white-space: normal;
    }

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

    .week-navigation {
        align-items: stretch;
        flex-direction: column;
    }

    .week-grid {
        grid-template-columns: 1fr;
        overflow: visible;
    }

    .week-day {
        min-height: auto;
    }

    .notification-card {
        align-items: flex-start;
        flex-direction: column;
    }

    .notification-card form,
    .notification-card button {
        width: 100%;
    }

    .pagination {
        gap: 8px;
        font-size: 0.75rem;
    }

    table {
        display: block;
        overflow-x: auto;
    }
}

.chat-workspace {
    display: grid;
    grid-template-columns: minmax(250px, 300px) minmax(0, 1fr);
    align-items: start;
    gap: 18px;
}

.chat-directory {
    position: sticky;
    top: 92px;
    overflow: hidden;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
    background: var(--color-surface);
}

.chat-directory__header {
    display: flex;
    padding: 18px;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    border-bottom: 1px solid var(--color-border);
}

.chat-directory__header h2,
.chat-directory__header p {
    margin: 0;
}

.chat-directory__list {
    display: grid;
    max-height: calc(100vh - 190px);
    padding: 7px;
    overflow-y: auto;
}

.chat-directory__item {
    display: flex;
    min-width: 0;
    padding: 11px;
    align-items: center;
    gap: 10px;
    border-radius: 11px;
    color: var(--color-text);
    text-decoration: none;
}

.chat-directory__item:hover,
.chat-directory__item.is-selected {
    color: var(--color-text);
    background: #eef0f2;
}

.chat-directory__item.is-selected {
    box-shadow: inset 3px 0 var(--color-accent);
}

.chat-directory__item.is-unread:not(.is-selected) {
    background: #f4fbfe;
}

.chat-directory__item .chat-avatar {
    width: 38px;
    height: 38px;
    border-radius: 11px;
    font-size: 0.78rem;
}

.chat-directory__item .chat-list__body strong {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.chat-conversation {
    min-width: 0;
}

.chat-conversation__body {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    align-items: start;
    gap: 16px;
}

.chat-conversation__main {
    min-width: 0;
}

.chat-conversation .chat-header {
    display: flex;
    margin-bottom: 16px;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}

.chat-conversation .chat-header h1,
.chat-conversation .chat-header p {
    text-align: left;
}

.chat-conversation .chat-header h1 {
    margin: 3px 0;
}

.chat-conversation .back-link {
    display: none;
}

.chat-tools {
    margin-top: 16px;
    overflow: hidden;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
    background: var(--color-surface);
}

.chat-tools > summary {
    padding: 16px 18px;
    color: var(--color-muted);
    font-size: 0.88rem;
    font-weight: 700;
    cursor: pointer;
}

.chat-tools__content {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(260px, 0.75fr);
    gap: 0;
    border-top: 1px solid var(--color-border);
}

.chat-tools__section {
    padding: 20px;
}

.chat-tools__section + .chat-tools__section {
    border-left: 1px solid var(--color-border);
}

.chat-tools__section h2 {
    margin-top: 0;
    font-size: 1rem;
}

.chat-tools__section > p {
    color: var(--color-muted);
    font-size: 0.84rem;
}

.chat-state-control form p {
    margin: 12px 0;
}

@media (max-width: 900px) {
    .chat-workspace {
        grid-template-columns: 230px minmax(0, 1fr);
    }

    .chat-tools__content {
        grid-template-columns: 1fr;
    }

    .chat-tools__section + .chat-tools__section {
        border-top: 1px solid var(--color-border);
        border-left: 0;
    }
}

@media (max-width: 700px) {
    .chat-workspace {
        grid-template-columns: 1fr;
    }

    .chat-directory {
        display: none;
    }

    .chat-conversation .back-link {
        display: inline-block;
    }

    .chat-conversation .chat-header,
    .profile-actions {
        width: 100%;
        align-items: stretch;
        flex-direction: column;
    }

    .profile-actions .button,
    .profile-actions form,
    .profile-actions button {
        width: 100%;
    }

    .course-journal-wrap {
        max-height: 68vh;
    }

    .course-journal-table {
        display: table;
        overflow: visible;
    }

    .journal-sticky-column {
        width: 156px;
        min-width: 156px;
        max-width: 156px;
    }

    .journal-student-name {
        padding: 11px;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
    }
}

/* Понятные формы и вторичные служебные блоки. */
form p:has(input[type="checkbox"]) {
    display: flex;
    align-items: center;
    gap: 10px;
}

form p:has(input[type="checkbox"]) label {
    margin: 0;
    order: 2;
}

form input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin: 0;
    flex: 0 0 auto;
}

.legal-consents {
    display: grid;
    gap: 12px;
    margin: 24px 0;
    padding: 20px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
    background: var(--color-surface-soft);
}

.legal-consents legend {
    padding: 0 8px;
    font-weight: 700;
}

.legal-consents__intro,
.legal-consents__note {
    margin: 0;
    color: var(--color-muted);
    font-size: 0.9rem;
}

.legal-consents__note {
    display: block;
}

.legal-consents__nowrap {
    white-space: nowrap;
}

.legal-consent-row {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin: 0;
    line-height: 1.45;
}

.legal-consent-row input {
    margin-top: 3px;
}

.legal-document {
    max-width: 860px;
    margin-inline: auto;
}

.legal-document__notice {
    padding: 16px 18px;
    border-left: 3px solid var(--color-accent);
    border-radius: var(--radius-small);
    background: var(--color-surface-soft);
}

.legal-document h2 {
    margin-top: 32px;
}

.legal-document li + li {
    margin-top: 8px;
}

.site-footer__links {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 18px;
}

input[type="file"] {
    width: 100%;
    padding: 12px;
    border: 1px dashed var(--color-border-strong);
    border-radius: var(--radius-small);
    background: var(--color-surface-soft);
}

.field-hint {
    max-width: 760px;
    color: var(--color-muted);
    font-size: 0.88rem;
}

.info-tip {
    display: inline-grid;
    position: relative;
    flex: 0 0 22px;
    width: 22px;
    min-width: 22px;
    height: 22px;
    min-height: 22px;
    padding: 0;
    box-sizing: border-box;
    aspect-ratio: 1;
    border: 1px solid var(--color-border-strong);
    border-radius: 50%;
    background: var(--color-surface) url("images/icons8-info.7d7bf9cbaf9a.png") center / 15px 15px no-repeat;
    color: var(--color-muted);
    font-size: 0;
    line-height: 1;
    place-items: center;
    vertical-align: middle;
}

.info-tip:hover,
.info-tip:focus-visible {
    border-color: var(--color-border-strong);
    background: var(--color-surface) url("images/icons8-info.7d7bf9cbaf9a.png") center / 15px 15px no-repeat;
}

.info-tip:not([data-tooltip-enhanced="true"]):hover::after,
.info-tip:not([data-tooltip-enhanced="true"]):focus-visible::after {
    position: absolute;
    z-index: 20;
    bottom: calc(100% + 8px);
    left: 50%;
    width: min(280px, 75vw);
    padding: 10px 12px;
    border-radius: 8px;
    background: #202429;
    color: #fff;
    content: attr(data-tooltip);
    font-size: 0.78rem;
    font-weight: 500;
    line-height: 1.45;
    transform: translateX(-50%);
}

.info-tip-popover {
    position: fixed;
    z-index: 1000;
    width: max-content;
    max-width: min(320px, calc(100vw - 24px));
    padding: 10px 12px;
    border-radius: 8px;
    background: #202429;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.22);
    color: #fff;
    font-size: 0.78rem;
    font-weight: 500;
    line-height: 1.45;
    overflow-wrap: anywhere;
    pointer-events: none;
}

.info-tip-popover[hidden] {
    display: none;
}

.file-preview-dialog {
    width: min(1100px, calc(100vw - 28px));
    max-width: none;
    height: min(860px, calc(100dvh - 28px));
    max-height: none;
    padding: 0;
    overflow: hidden;
    border: 1px solid var(--color-border-strong);
    border-radius: 16px;
    background: var(--color-surface);
    box-shadow: 0 24px 70px rgba(0, 0, 0, 0.28);
}

.file-preview-dialog::backdrop {
    background: rgba(18, 21, 24, 0.68);
    backdrop-filter: blur(3px);
}

.file-preview-dialog__surface {
    display: grid;
    height: 100%;
    grid-template-rows: auto minmax(0, 1fr);
}

.file-preview-dialog__header {
    display: flex;
    min-width: 0;
    padding: 14px 16px;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    border-bottom: 1px solid var(--color-border);
}

.file-preview-dialog__header h2 {
    min-width: 0;
    margin: 0;
    overflow: hidden;
    font-size: 1rem;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-preview-dialog__actions {
    display: flex;
    flex: 0 0 auto;
    flex-wrap: wrap;
    gap: 8px;
}

.file-preview-dialog__body {
    display: grid;
    min-width: 0;
    min-height: 0;
    overflow: auto;
    place-items: center;
    background: #e9ebed;
}

.file-preview-dialog__body--pdf {
    display: block;
    overflow: hidden;
}

.file-preview-dialog__image {
    display: block;
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.pdf-preview {
    width: 100%;
    height: 100%;
    min-height: 0;
}

.pdf-preview__loading {
    margin: 0;
    padding: 24px;
    color: var(--color-muted);
    font-weight: 700;
    text-align: center;
}

.pdf-preview__stage {
    height: 100%;
    min-width: 0;
    min-height: 0;
    overflow: auto;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
}

.pdf-preview__pages {
    display: grid;
    width: 100%;
    padding: 18px;
    justify-items: center;
    gap: 18px;
}

.pdf-preview__page {
    position: relative;
    display: grid;
    width: min(100%, 1000px);
    overflow: hidden;
    place-items: center;
    background: #fff;
    box-shadow: 0 8px 28px rgba(25, 30, 34, 0.22);
}

.pdf-preview__page-label {
    position: absolute;
    z-index: 1;
    top: 8px;
    right: 8px;
    padding: 3px 7px;
    border-radius: 999px;
    background: rgba(31, 36, 40, 0.76);
    color: #fff;
    font-size: 0.75rem;
    line-height: 1.2;
}

.pdf-preview__page-status {
    margin: 0;
    padding: 20px;
    color: #4f565c;
    text-align: center;
}

.pdf-preview__canvas {
    display: block;
    max-width: 100%;
    height: auto !important;
    background: #fff;
}

.pdf-preview__canvas[hidden],
.pdf-preview__page-status[hidden] {
    display: none;
}

.file-preview-dialog__fallback {
    margin: 0;
    color: #4f565c;
}

.file-preview-dialog__fallback {
    display: grid;
    max-width: 520px;
    padding: 24px;
    justify-items: center;
    gap: 16px;
    text-align: center;
}

@media (max-width: 600px) {
    .file-preview-dialog {
        width: 100vw;
        height: 100dvh;
        border: 0;
        border-radius: 0;
    }

    .file-preview-dialog__header {
        align-items: flex-start;
        flex-direction: column;
    }

    .file-preview-dialog__actions {
        width: 100%;
    }

    .file-preview-dialog__actions > * {
        flex: 1 1 0;
    }

    .pdf-preview__pages {
        padding: 8px;
        gap: 10px;
    }
}

.audit-section,
.compact-editor {
    margin: 28px 0;
    padding: 16px 18px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
    background: var(--color-surface-soft);
}

.audit-section > summary,
.compact-editor > summary {
    color: var(--color-muted);
    font-weight: 700;
    cursor: pointer;
}

.audit-section[open] > summary,
.compact-editor[open] > summary {
    margin-bottom: 18px;
}

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

.audit-summary__card {
    display: grid;
    min-height: 96px;
    padding: 17px 19px;
    align-content: space-between;
    border: 1px solid var(--color-border);
    border-top: 3px solid var(--color-border-strong);
    border-radius: 13px;
    background: var(--color-surface);
}

.audit-summary__card span {
    color: var(--color-muted);
    font-size: 0.78rem;
    font-weight: 700;
}

.audit-summary__card strong {
    font-size: 1.65rem;
    line-height: 1;
}

.audit-summary__card--create {
    border-top-color: #4b9b70;
}

.audit-summary__card--update {
    border-top-color: #d1a334;
}

.audit-summary__card--delete {
    border-top-color: #c65b54;
}

.audit-timeline {
    display: grid;
    gap: 14px;
}

.audit-day {
    overflow: hidden;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
    background: var(--color-surface);
}

.audit-day > summary {
    display: flex;
    min-height: 72px;
    padding: 16px 20px;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    cursor: pointer;
    list-style: none;
}

.audit-day > summary::-webkit-details-marker {
    display: none;
}

.audit-day > summary > span:first-child {
    display: grid;
    gap: 2px;
}

.audit-day > summary small {
    color: var(--color-muted);
    font-size: 0.76rem;
}

.audit-day__toggle {
    color: var(--color-muted);
    font-size: 1.7rem;
    line-height: 1;
    transform: rotate(90deg);
    transition: transform 160ms ease;
}

.audit-day[open] .audit-day__toggle {
    transform: rotate(-90deg);
}

.audit-event-list {
    display: grid;
    padding: 0 18px 18px;
    gap: 10px;
}

.audit-event {
    display: grid;
    padding: 15px 17px;
    gap: 13px;
    border: 1px solid var(--color-border);
    border-left: 4px solid var(--color-border-strong);
    border-radius: 12px;
    background: var(--color-surface-soft);
}

.audit-event--create {
    border-left-color: #4b9b70;
}

.audit-event--update {
    border-left-color: #d1a334;
}

.audit-event--delete {
    border-left-color: #c65b54;
}

.audit-event__header,
.audit-event__main,
.audit-event__fields,
.audit-event__fields > div {
    display: flex;
    align-items: center;
}

.audit-event__header {
    flex-wrap: wrap;
    gap: 8px;
    color: var(--color-muted);
    font-size: 0.78rem;
}

.audit-action {
    display: inline-flex;
    min-height: 27px;
    padding: 4px 9px;
    align-items: center;
    border-radius: 999px;
    font-size: 0.73rem;
    font-weight: 800;
}

.audit-action--create {
    color: #276143;
    background: #e7f4ec;
}

.audit-action--update {
    color: #755d1a;
    background: #fff5d7;
}

.audit-action--delete {
    color: #7a3f3f;
    background: #f7e5e5;
}

.audit-event__main {
    align-items: flex-start;
    justify-content: space-between;
    gap: 22px;
}

.audit-event__main > div {
    min-width: 0;
}

.audit-event__type,
.audit-event__actor,
.audit-event__no-fields,
.audit-event h2 {
    margin: 0;
}

.audit-event__type,
.audit-event__actor span,
.audit-event__fields > span,
.audit-event__no-fields {
    color: var(--color-muted);
    font-size: 0.76rem;
}

.audit-event h2 {
    font-size: 1rem;
    overflow-wrap: anywhere;
}

.audit-event__actor {
    display: grid;
    max-width: 42%;
    gap: 2px;
    text-align: right;
    overflow-wrap: anywhere;
}

.audit-event__actor strong {
    font-size: 0.82rem;
}

.audit-event__fields {
    align-items: flex-start;
    gap: 12px;
}

.audit-event__fields > span {
    flex: 0 0 auto;
    padding-top: 5px;
    font-weight: 700;
}

.audit-event__fields > div {
    flex-wrap: wrap;
    gap: 5px;
}

.audit-event__fields .chip {
    min-height: 24px;
    padding: 3px 8px;
    font-size: 0.7rem;
}

.audit-event__technical {
    border-top: 1px solid var(--color-border);
    padding-top: 10px;
}

.audit-event__technical > summary {
    width: fit-content;
    color: var(--color-muted);
    font-size: 0.75rem;
    font-weight: 700;
    cursor: pointer;
}

.audit-event__technical dl {
    display: grid;
    margin: 12px 0 0;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 9px;
}

.audit-event__technical dl > div {
    display: grid;
    min-width: 0;
    gap: 2px;
}

.audit-event__technical dt {
    color: var(--color-muted);
    font-size: 0.7rem;
}

.audit-event__technical dd {
    margin: 0;
    font-size: 0.78rem;
    font-weight: 700;
    overflow-wrap: anywhere;
}

.connection-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr));
    gap: 16px;
}

.notification-preference-table {
    position: relative;
    max-width: 820px;
    margin-bottom: 20px;
    overflow-x: auto;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
}

.notification-preference-row {
    display: grid;
    grid-template-columns: minmax(230px, 1fr) repeat(3, minmax(90px, 120px));
    min-width: 580px;
    align-items: center;
    padding: 13px 16px;
    border-bottom: 1px solid var(--color-border);
}

.notification-preference-row:last-child {
    border-bottom: 0;
}

.notification-preference-row > span:not(:first-child) {
    text-align: center;
}

.notification-preference-row--heading {
    background: var(--color-surface-soft);
    color: var(--color-muted);
    font-size: 0.82rem;
    font-weight: 700;
}

.notification-preference-row input[type='checkbox'] {
    margin: 0;
}

.lesson-recording-block {
    margin: 28px 0;
}

.course-members-page > h2 {
    margin-top: 40px;
    margin-bottom: 14px;
}

.page-actions,
.quick-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 16px 0 24px;
}

.chat-history-navigation {
    display: flex;
    padding: 10px 18px 0;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
}

/* Единое представление рабочих страниц одного курса. */
.course-workspace {
    display: grid;
    width: 100%;
    margin: 0 auto;
    gap: 24px;
}

.course-workspace__header {
    padding: 8px 2px 10px;
}

.course-workspace__header .back-link {
    display: inline-flex;
    margin-bottom: 24px;
    color: var(--color-muted);
    font-size: 0.86rem;
    font-weight: 700;
    text-decoration: none;
}

.course-workspace__header .back-link:hover {
    color: var(--color-text);
}

.course-workspace__heading {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 28px;
}

.course-workspace__heading h1 {
    margin: 0;
    letter-spacing: -0.035em;
}

.course-workspace__heading > div:first-child > p:last-child {
    max-width: 640px;
    margin: 10px 0 0;
    color: var(--color-muted);
}

.course-workspace__actions {
    display: flex;
    flex: 0 0 auto;
    flex-wrap: wrap;
    gap: 9px;
}

.course-workspace__action-form {
    display: flex;
    margin: 0;
}

.workspace-section {
    padding: clamp(22px, 4vw, 34px);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
    background: var(--color-surface);
}

.workspace-section > .section-heading {
    margin-bottom: 22px;
}

.schedule-rule-list,
.material-card-list {
    display: grid;
    gap: 14px;
}

.schedule-rule-card {
    padding: 20px;
    border: 1px solid var(--color-border);
    border-radius: 14px;
    background: #fafbfb;
}

.schedule-rule-card.is-cancelled {
    background: #f7f5f5;
}

.schedule-rule-card__header,
.material-card__header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 18px;
}

.schedule-rule-card__label,
.material-card__type {
    display: block;
    margin-bottom: 4px;
    color: var(--color-muted);
    font-size: 0.72rem;
    font-weight: 750;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.schedule-rule-card h3,
.material-card h3 {
    margin: 0;
    font-size: 1.08rem;
}

.schedule-rule-card__dash {
    margin: 0 3px;
    color: #a3a8ad;
}

.schedule-rule-card__controls,
.material-card__actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 8px;
}

.material-card__actions form {
    margin: 0;
}

.schedule-slot-grid {
    display: grid;
    margin-top: 18px;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 8px;
}

.schedule-slot {
    display: grid;
    padding: 11px 13px;
    gap: 2px;
    border: 1px solid var(--color-border);
    border-radius: 10px;
    background: var(--color-surface);
}

.schedule-slot span {
    color: var(--color-muted);
    font-size: 0.76rem;
}

.schedule-slot strong {
    font-size: 0.94rem;
}

.empty-state--compact {
    padding: 16px;
}

.course-lesson-list,
.lesson-material-list {
    overflow: hidden;
    border: 1px solid var(--color-border);
    border-radius: 14px;
}

.bulk-lesson-form {
    display: grid;
    gap: 12px;
}

.bulk-lesson-toolbar {
    display: flex;
    min-height: 52px;
    padding: 10px 12px;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    background: var(--color-surface-soft);
}

.bulk-select-all,
.bulk-lesson-toolbar__actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.bulk-select-all {
    font-weight: 700;
    cursor: pointer;
}

.bulk-select-all input,
.course-lesson-selector input {
    width: 18px;
    height: 18px;
    margin: 0;
    accent-color: var(--color-accent);
}

.bulk-selection-count {
    color: var(--color-muted);
    font-size: 0.82rem;
}

.course-lesson-entry {
    position: relative;
    border-bottom: 1px solid var(--color-border);
}

.course-lesson-entry:last-child {
    border-bottom: 0;
}

.course-lesson-entry .course-lesson-row {
    border-bottom: 0;
}

.course-lesson-entry--selectable .course-lesson-row {
    padding-left: 54px;
}

.course-lesson-selector {
    position: absolute;
    z-index: 1;
    top: 0;
    bottom: 0;
    left: 16px;
    display: flex;
    align-items: center;
    cursor: pointer;
}

.course-lesson-row,
.lesson-material-row {
    display: grid;
    min-height: 82px;
    padding: 14px 16px;
    align-items: center;
    gap: 16px;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text);
    background: var(--color-surface);
    text-decoration: none;
    transition: background 160ms ease;
}

.course-lesson-row {
    grid-template-columns: 64px 82px minmax(150px, 1fr) auto 20px;
}

.course-lesson-row:last-child,
.lesson-material-row:last-child {
    border-bottom: 0;
}

.course-lesson-row:hover,
.lesson-material-row:hover {
    color: var(--color-text);
    background: #f7f8f9;
}

.course-lesson-row__date,
.course-lesson-row__time,
.course-lesson-row__details,
.lesson-material-row__date,
.lesson-material-row__body {
    display: grid;
    gap: 2px;
}

.course-lesson-row__date {
    padding-right: 14px;
    border-right: 1px solid var(--color-border);
}

.course-lesson-row__date strong {
    font-size: 1.05rem;
}

.course-lesson-row__date span,
.course-lesson-row__time span,
.course-lesson-row__details span,
.lesson-material-row__date span,
.lesson-material-row__body span {
    color: var(--color-muted);
    font-size: 0.76rem;
}

.course-lesson-row__time strong {
    font-size: 0.98rem;
}

.material-card {
    padding: 22px;
    border: 1px solid var(--color-border);
    border-radius: 14px;
    background: #fafbfb;
}

.material-card__description {
    max-width: 720px;
    margin-top: 16px;
    color: #4f555b;
    font-size: 0.92rem;
}

.material-card__muted {
    margin: 16px 0 0;
    color: var(--color-muted);
    font-size: 0.84rem;
}

.material-resource-list {
    display: grid;
    margin-top: 18px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
}

.material-resource {
    display: flex;
    min-width: 0;
    padding: 12px;
    align-items: center;
    gap: 11px;
    border: 1px solid var(--color-border);
    border-radius: 10px;
    color: var(--color-text);
    background: var(--color-surface);
    text-decoration: none;
}

.material-resource:hover {
    color: var(--color-text);
    border-color: #c4c9cd;
}

.material-resource__icon {
    display: grid;
    width: 32px;
    height: 32px;
    flex: 0 0 auto;
    place-items: center;
    border-radius: 8px;
    background: #eef0f2;
    font-weight: 750;
}

.material-resource > span:last-child {
    display: grid;
    min-width: 0;
    gap: 2px;
}

.material-resource strong,
.material-resource small {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.material-resource small {
    color: var(--color-muted);
}

.lesson-material-row {
    grid-template-columns: 94px minmax(0, 1fr) 20px;
}

.lesson-material-row__date {
    padding-right: 14px;
    border-right: 1px solid var(--color-border);
}

.course-member-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.management-card {
    padding: clamp(22px, 4vw, 30px);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
    background: var(--color-surface);
}

.management-card--wide {
    width: 100%;
}

.management-card__heading {
    display: flex;
    margin-bottom: 24px;
    align-items: flex-start;
}

.management-card__heading h2 {
    margin: 0 0 4px;
    font-size: 1.18rem;
}

.management-card__heading p {
    margin: 0;
    color: var(--color-muted);
    font-size: 0.84rem;
}

.management-card form > p:first-of-type {
    margin-top: 0;
}

.management-card form > p:last-of-type {
    margin-bottom: 18px;
}

.management-card form select,
.management-card form input:not([type="checkbox"]):not([type="radio"]):not([type="submit"]) {
    width: 100%;
}

.management-form--enrollment {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(220px, 0.7fr) auto;
    align-items: end;
    gap: 14px;
}

.management-form__field {
    display: grid;
    min-width: 0;
    align-content: end;
    gap: 6px;
}

.management-form__field > label {
    margin: 0;
    line-height: 1.5;
}

.management-form__field select,
.management-form__field .date-input-control,
.management-form--enrollment > button {
    min-height: 46px;
}

.management-form__field .date-input-control {
    width: 100%;
}

.management-form__field .errorlist {
    margin: 0;
}

.course-audit {
    margin-top: 8px;
    padding-top: 12px;
}

.course-audit > .section-heading {
    margin-bottom: 6px;
}

.course-members-page .course-audit .section-heading h2 {
    margin: 0;
}

.course-audit .audit-section {
    margin: 12px 0 0;
}

.audit-list {
    display: grid;
    gap: 8px;
}

.audit-list h3 {
    margin: 18px 0 2px;
    font-size: 0.9rem;
}

.audit-list h3:first-child {
    margin-top: 0;
}

.audit-row {
    display: flex;
    padding: 13px 0;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    border-bottom: 1px solid var(--color-border);
}

.audit-row:last-child {
    border-bottom: 0;
}

.audit-row > div:first-child {
    display: grid;
    min-width: 0;
    gap: 2px;
}

.audit-row span,
.audit-row small {
    color: var(--color-muted);
}

.audit-row span {
    font-size: 0.82rem;
}

.audit-row small {
    font-size: 0.74rem;
}

.audit-row form {
    flex: 0 0 auto;
}

.audit-row--student {
    align-items: flex-start;
}

.finish-enrollment-form {
    display: grid;
    width: min(100%, 520px);
    grid-template-columns: repeat(2, minmax(140px, 1fr)) auto;
    align-items: end;
    gap: 8px;
}

.finish-enrollment-form p {
    margin: 0;
}

.finish-enrollment-form label {
    font-size: 0.76rem;
}

.finish-enrollment-form select,
.finish-enrollment-form input:not([type="checkbox"]):not([type="radio"]):not([type="submit"]) {
    width: 100%;
}

.lesson-fact-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
}

.lesson-fact {
    display: grid;
    min-height: 96px;
    padding: 17px;
    align-content: space-between;
    gap: 10px;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    background: #fafbfb;
}

.lesson-fact--wide {
    grid-column: 1 / -1;
    min-height: auto;
}

.lesson-fact span {
    color: var(--color-muted);
    font-size: 0.76rem;
    font-weight: 700;
}

.lesson-fact strong {
    overflow-wrap: anywhere;
    font-size: 0.96rem;
}

.lesson-notice {
    margin-top: 14px;
    padding: 13px 15px;
    border-radius: 10px;
    color: var(--color-muted);
    background: #f3f4f5;
    font-size: 0.84rem;
}

.lesson-teacher-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}

.lesson-teacher {
    display: flex;
    min-width: 0;
    padding: 14px;
    align-items: center;
    gap: 12px;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    background: #fafbfb;
}

.lesson-teacher > span:last-child {
    display: grid;
    min-width: 0;
    gap: 2px;
}

.lesson-teacher strong {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.lesson-teacher small {
    color: var(--color-muted);
}

.lesson-management-panel {
    display: grid;
    padding: 22px 24px;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 16px 24px;
    border-top: 1px solid var(--color-border);
}

.lesson-management-panel h2 {
    margin: 0 0 4px;
    font-size: 1.05rem;
}

.lesson-management-panel > div:first-child p {
    margin: 0;
    color: var(--color-muted);
    font-size: 0.82rem;
}

.lesson-management-panel__actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 8px;
}

.lesson-management-panel__actions form {
    margin: 0;
}

.lesson-delete-button {
    color: #7c5558;
}

.lesson-delete-button:hover {
    color: #6b4044;
    border-color: #ded0d1;
    background: #f7f1f1;
}

.lesson-management-panel__hint {
    grid-column: 1 / -1;
    margin: 0;
}

@media (max-width: 760px) {
    .course-workspace__heading,
    .schedule-rule-card__header,
    .material-card__header {
        align-items: stretch;
        flex-direction: column;
    }

    .course-workspace__actions,
    .course-workspace__action-form,
    .course-workspace__actions .button {
        width: 100%;
    }

    .course-lesson-row {
        grid-template-columns: 56px 70px minmax(0, 1fr) 20px;
        gap: 12px;
    }

    .course-lesson-row .status {
        grid-column: 2 / 4;
        grid-row: 2;
        width: fit-content;
    }

    .course-lesson-row .list-card__arrow {
        grid-column: 4;
        grid-row: 1 / 3;
    }

    .material-resource-list,
    .course-member-grid,
    .lesson-fact-grid,
    .lesson-teacher-list,
    .profile-course-list {
        grid-template-columns: 1fr;
    }

    .management-form--enrollment,
    .finish-enrollment-form {
        grid-template-columns: 1fr;
    }

    .management-form--enrollment button,
    .finish-enrollment-form button {
        width: 100%;
    }

    .audit-row,
    .audit-row--student {
        align-items: stretch;
        flex-direction: column;
    }

    .lesson-management-panel {
        grid-template-columns: 1fr;
    }

    .lesson-management-panel__actions {
        justify-content: flex-start;
    }
}

/* Назначение ролей. Основные действия расположены выше служебной истории. */
.role-management-page,
.guide-page,
.material-editor-page {
    width: 100%;
    margin-inline: auto;
}

.role-user-summary {
    display: grid;
    margin-bottom: 24px;
    padding: 20px 24px;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
    background: var(--color-surface);
}

.role-user-summary__avatar {
    display: grid;
    width: 48px;
    height: 48px;
    place-items: center;
    border-radius: 14px;
    color: #fff;
    background: var(--color-accent);
    font-weight: 750;
}

.role-user-summary__identity,
.role-management-role > div,
.audit-list > div {
    display: grid;
    gap: 3px;
}

.role-user-summary__identity span,
.role-management-role span,
.audit-list span {
    color: var(--color-muted);
    font-size: 0.86rem;
}

.role-management-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 300px;
    align-items: start;
    gap: 22px;
}

.role-management-main {
    display: grid;
    gap: 22px;
}

.role-management-current,
.audit-list {
    display: grid;
    gap: 10px;
}

.role-management-role {
    display: flex;
    min-height: 64px;
    padding: 13px 15px;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    background: var(--color-surface-soft);
}

.role-management-role .compact-editor {
    margin: 0;
}

.role-assignment-form {
    display: flex;
    align-items: end;
    gap: 12px;
}

.role-assignment-form > div {
    display: grid;
    min-width: 240px;
    flex: 1;
    gap: 6px;
}

.role-management-sidebar {
    position: sticky;
    top: 94px;
}

.role-management-sidebar h2 {
    margin: 0 0 14px;
}

.role-management-audit {
    margin-top: 26px;
}

.role-management-audit .audit-section {
    margin: 12px 0;
}

.audit-list > div {
    padding-bottom: 10px;
    border-bottom: 1px solid var(--color-border);
}

.audit-list > div:last-child {
    padding-bottom: 0;
    border-bottom: 0;
}

/* Гайды: импорт Markdown и просторное чтение. */
.guide-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.guide-card {
    display: grid;
    min-height: 160px;
    padding: 22px;
    align-content: space-between;
    gap: 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
    color: var(--color-text);
    background: var(--color-surface);
    text-decoration: none;
    transition: transform 160ms ease, border-color 160ms ease;
}

.guide-card:hover {
    color: var(--color-text);
    border-color: #c2c7cc;
    transform: translateY(-2px);
}

.guide-card > strong {
    font-size: 1.2rem;
}

.guide-card > span:last-child,
.guide-audiences {
    color: var(--color-muted);
    font-size: 0.84rem;
}

.guide-card__meta,
.guide-audiences {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
}

.guide-content {
    padding: clamp(24px, 6vw, 64px);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
    background: var(--color-surface);
}

.guide-content > :first-child {
    margin-top: 0;
}

.guide-content > :last-child {
    margin-bottom: 0;
}

.guide-content h2 {
    margin: 38px 0 14px;
}

.guide-content h3 {
    margin: 28px 0 10px;
}

.guide-content p {
    max-width: 760px;
    color: #454b51;
    line-height: 1.75;
}

.guide-content ul,
.guide-content ol {
    padding-left: 1.5rem;
    line-height: 1.7;
}

.guide-content pre {
    max-width: 100%;
    padding: 16px;
    overflow-x: auto;
    border-radius: 10px;
    background: #f1f3f4;
}

.guide-content table {
    display: block;
    max-width: 100%;
    overflow-x: auto;
}

.guide-content figure {
    margin: 30px 0;
}

.guide-content img {
    display: block;
    width: auto;
    max-width: 100%;
    max-height: 720px;
    border: 1px solid var(--color-border);
    border-radius: 12px;
}

.guide-content figcaption {
    margin-top: 8px;
    color: var(--color-muted);
    font-size: 0.84rem;
}

.guide-editor {
    display: grid;
    gap: 22px;
}

.guide-editor__settings {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(280px, 0.7fr);
    align-items: start;
    gap: 24px;
}

.guide-editor__settings > div {
    display: grid;
    gap: 6px;
}

.guide-markdown-editor,
.guide-markdown-editor__upload {
    display: grid;
    gap: 8px;
}

.guide-audience-field {
    margin: 0;
}

.guide-audience-field ul {
    display: flex;
    margin: 0;
    padding: 0;
    flex-wrap: wrap;
    gap: 12px;
    list-style: none;
}

.guide-audience-field label {
    display: flex;
    align-items: center;
    gap: 7px;
}

.guide-block-list {
    display: grid;
    gap: 14px;
}

.guide-block-editor {
    padding: 18px;
    border: 1px solid var(--color-border);
    border-radius: 14px;
    background: var(--color-surface-soft);
}

.guide-block-editor__head,
.guide-block-editor__tools,
.guide-editor__actions,
.material-editor-form__actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.guide-block-editor__head {
    margin-bottom: 14px;
    justify-content: space-between;
}

.icon-button,
.selected-file__remove,
.uploaded-file__remove {
    display: inline-grid;
    width: 36px;
    min-height: 36px;
    padding: 0;
    border-color: var(--color-border);
    color: var(--color-text);
    background: var(--color-surface);
    place-items: center;
}

.icon-button:hover,
.selected-file__remove:hover,
.uploaded-file__remove:hover {
    color: #fff;
    border-color: #8f3337;
    background: #a83d42;
}

.guide-block-editor__fields {
    display: grid;
    grid-template-columns: 190px minmax(0, 1fr);
    align-items: start;
    gap: 16px;
}

.guide-block-editor__fields > div {
    display: grid;
    gap: 6px;
}

.guide-block-editor__preview {
    max-width: 260px;
    max-height: 180px;
    border-radius: 10px;
    object-fit: contain;
}

.guide-block-editor__hidden {
    display: none;
}

/* Загрузка и удаление файлов материала. */
.material-editor-form {
    display: grid;
    gap: 22px;
}

.material-editor-form > div:not(.material-editor-form__actions) {
    display: grid;
    gap: 6px;
}

.uploaded-files {
    margin: 0;
}

.uploaded-files__list,
.selected-file-list {
    display: grid;
    gap: 8px;
}

.uploaded-file,
.selected-file {
    display: flex;
    min-height: 56px;
    padding: 9px 10px 9px 14px;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    border: 1px solid var(--color-border);
    border-radius: 10px;
    background: var(--color-surface);
}

.selected-file > span {
    min-width: 0;
    flex: 1;
    overflow-wrap: anywhere;
}

.selected-file--recording {
    align-items: flex-start;
}

.selected-file__details {
    display: grid;
    min-width: 0;
    flex: 1;
    gap: 8px;
}

.selected-file__name {
    color: var(--color-muted);
    font-size: 0.82rem;
    overflow-wrap: anywhere;
}

.selected-file__title-label {
    display: grid;
    gap: 5px;
    color: var(--color-text);
    font-size: 0.8rem;
    font-weight: 700;
}

.selected-file__title-input {
    width: 100%;
    font-weight: 500;
}

.uploaded-file > a,
.uploaded-file > span {
    display: grid;
    min-width: 0;
    flex: 1;
    color: var(--color-text);
    text-decoration: none;
}

.uploaded-file > a strong,
.uploaded-file > span strong {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.uploaded-file > a span,
.uploaded-file > span span {
    color: var(--color-muted);
    font-size: 0.78rem;
}

.uploaded-file__checkbox {
    position: absolute;
    width: 1px !important;
    height: 1px !important;
    overflow: hidden;
    opacity: 0;
}

.uploaded-file:has(.uploaded-file__checkbox:checked) {
    border-color: #e2b6b9;
    background: #fff2f2;
}

.uploaded-file:has(.uploaded-file__checkbox:checked) > a,
.uploaded-file:has(.uploaded-file__checkbox:checked) > span {
    opacity: 0.48;
    text-decoration: line-through;
}

.uploaded-file__remove {
    flex: 0 0 auto;
    border-radius: 9px;
    cursor: pointer;
}

.uploaded-file__checkbox:focus-visible + .uploaded-file__remove {
    outline: 3px solid rgba(21, 155, 211, 0.35);
    outline-offset: 3px;
}

.selected-file-list:not(:empty) {
    margin-top: 10px;
}

.selected-file {
    min-height: 48px;
    background: var(--color-surface-soft);
}

.selected-file__remove {
    width: 32px;
    min-height: 32px;
    padding: 0;
    flex: 0 0 auto;
    border-radius: 8px;
}

@media (max-width: 820px) {
    .role-management-grid,
    .guide-editor__settings {
        grid-template-columns: 1fr;
    }

    .role-management-sidebar {
        position: static;
    }

    .role-user-summary {
        grid-template-columns: auto minmax(0, 1fr);
    }

    .role-user-summary > .status {
        grid-column: 1 / -1;
        justify-self: start;
    }

    .guide-list,
    .guide-block-editor__fields {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 560px) {
    .role-assignment-form,
    .role-management-role,
    .guide-editor__actions,
    .material-editor-form__actions {
        align-items: stretch;
        flex-direction: column;
    }

    .role-assignment-form > div,
    .role-assignment-form button,
    .guide-editor__actions .button,
    .guide-editor__actions button,
    .material-editor-form__actions .button,
    .material-editor-form__actions button {
        width: 100%;
    }

    .profile-course-item,
    .teacher-course-link {
        align-items: flex-start;
        flex-direction: column;
    }

    .teacher-course-link .status {
        align-self: flex-start;
    }
}

@media (max-width: 520px) {
    .workspace-section,
    .management-card {
        padding: 18px;
        border-radius: 14px;
    }

    .schedule-rule-card,
    .material-card {
        padding: 16px;
    }

    .course-lesson-row {
        grid-template-columns: 52px minmax(0, 1fr) 18px;
    }

    .course-lesson-entry--selectable .course-lesson-row {
        padding-left: 50px;
    }

    .course-lesson-selector {
        left: 14px;
    }

    .bulk-lesson-toolbar,
    .bulk-lesson-toolbar__actions {
        align-items: stretch;
        flex-direction: column;
    }

    .bulk-lesson-toolbar__actions .button {
        width: 100%;
    }

    .course-lesson-row__time {
        grid-column: 2;
        grid-row: 2;
    }

    .course-lesson-row__details {
        grid-column: 2;
        grid-row: 1;
    }

    .course-lesson-row .status {
        grid-column: 2;
        grid-row: 3;
    }

    .course-lesson-row .list-card__arrow {
        grid-column: 3;
        grid-row: 1 / 4;
    }

    .lesson-material-row {
        grid-template-columns: 76px minmax(0, 1fr) 18px;
        gap: 10px;
    }

    .lesson-management-panel {
        padding: 20px 2px 0;
    }

    .lesson-management-panel__actions,
    .lesson-management-panel__actions .button,
    .lesson-management-panel__actions form {
        width: 100%;
    }
}

/* Поля форм: обязательность и просмотр пароля. */
.required-marker {
    color: #b23a42;
    font-weight: 800;
}

.password-input-control {
    display: grid;
    position: relative;
    width: min(100%, 620px);
}

.password-input-control input {
    width: 100%;
    padding-right: 48px !important;
}

.password-input-control input::-ms-reveal,
.password-input-control input::-ms-clear {
    display: none;
}

.password-input-control__toggle {
    position: absolute;
    top: 50%;
    right: 8px;
    width: 34px;
    min-height: 34px;
    padding: 7px;
    border: 0;
    border-radius: 7px;
    background: transparent;
    color: var(--color-muted);
    transform: translateY(-50%);
}

.password-input-control__toggle svg {
    display: block;
    width: 20px;
    height: 20px;
}

.password-input-control__toggle .password-eye-slash {
    display: none;
}

.password-input-control__toggle.is-visible .password-eye-slash {
    display: block;
}

.password-input-control__toggle:hover {
    background: var(--color-surface-soft);
    color: var(--color-text);
}

/* Страница занятия и редактор записи. */
.lesson-learning-page {
    display: grid;
    width: 100%;
    margin: 0 auto;
    gap: 22px;
}

.lesson-learning-hero {
    display: flex;
    padding: 8px 2px 14px;
    align-items: flex-end;
    justify-content: space-between;
    gap: 28px;
}

.lesson-learning-hero .back-link {
    display: inline-flex;
    margin-bottom: 24px;
    color: var(--color-muted);
    font-size: 0.86rem;
    font-weight: 700;
    text-decoration: none;
}

.lesson-learning-hero h1 {
    margin: 3px 0 16px;
    letter-spacing: -0.035em;
}

.lesson-learning-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 9px;
}

.lesson-learning-meta > span {
    display: grid;
    min-width: 150px;
    padding: 11px 14px;
    gap: 2px;
    border: 1px solid var(--color-border);
    border-radius: 11px;
    background: var(--color-surface);
}

.lesson-learning-meta small,
.recording-resources small,
.lesson-record-list span,
.submission-card header span {
    color: var(--color-muted);
}

.lesson-learning-section {
    padding: clamp(22px, 4vw, 34px);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
    background: var(--color-surface);
}

.lesson-learning-section > .section-heading {
    margin-bottom: 22px;
}

.recording-resources,
.material-resource-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 230px), 1fr));
    gap: 10px;
}

.lesson-recording-list,
.lesson-recording-editors {
    display: grid;
    gap: 18px;
}

.lesson-recording-item {
    min-width: 0;
    padding: 16px;
    border: 1px solid var(--color-border);
    border-radius: 14px;
    background: var(--color-surface-soft);
}

.lesson-recording-item > h3 {
    margin: 0 0 12px;
}

.lesson-recording-item > .recording-editor,
.lesson-recording-list + .lesson-recording-editors {
    margin-top: 18px;
}

.lesson-recording-item .recording-player,
.lesson-recording-item .recording-processing-state {
    margin-bottom: 0;
}

.recording-player {
    display: grid;
    margin-bottom: 18px;
    overflow: hidden;
    border: 1px solid var(--color-border);
    border-radius: 14px;
    background: #17191c;
}

.recording-processing-state {
    margin-bottom: 18px;
}

.notice-panel--danger {
    border-color: #e5b9bc;
    background: #fff2f2;
    color: #8b252d;
}

.recording-player video {
    display: block;
    width: 100%;
    aspect-ratio: 16 / 9;
    max-height: min(68vh, 720px);
    background: #111315;
}

.recording-player__stage {
    position: relative;
    display: grid;
    place-items: center;
    background: #111315;
}

.recording-player__start {
    position: absolute;
    display: inline-flex;
    width: auto;
    min-width: min(280px, calc(100% - 32px));
    align-items: center;
    justify-content: center;
    gap: 10px;
    border-color: #70767d;
    background: rgba(37, 40, 44, 0.94);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.28);
}

.recording-player__start:hover {
    background: #35393e;
}

.recording-player__meta {
    display: flex;
    padding: 14px 16px;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    color: #fff;
    background: #25282c;
}

.recording-player__meta > div {
    display: grid;
    min-width: 0;
    gap: 2px;
}

.recording-player__meta strong,
.recording-player__meta span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.recording-player__meta span {
    color: #c8ccd0;
    font-size: 0.78rem;
}

.recording-player__meta .button {
    flex: 0 0 auto;
    color: #fff;
    border-color: #5f656b;
    background: #35393e;
}

.recording-editor {
    padding: 0 16px 16px;
    border: 1px solid var(--color-border);
    border-radius: 14px;
    background: var(--color-surface);
}

.recording-upload-progress {
    display: grid;
    gap: 8px;
}

.recording-upload-progress[hidden] {
    display: none;
}

.recording-upload-progress progress {
    width: 100%;
    height: 10px;
    accent-color: var(--color-accent);
}

.recording-upload-progress span {
    color: var(--color-muted);
    font-size: 0.86rem;
}

.recording-editor > summary {
    padding: 18px 0 0;
    color: var(--color-text);
    font-weight: 750;
    cursor: pointer;
}

.recording-editor form {
    display: grid;
    padding-top: 18px;
    gap: 18px;
}

.recording-editor__field {
    display: grid;
    gap: 7px;
}

.recording-editor__field > label,
.recording-current-file legend {
    font-size: 0.86rem;
    font-weight: 750;
}

.recording-current-file {
    min-width: 0;
    margin: 0;
    padding: 0;
    border: 0;
}

.recording-current-file .helptext {
    display: block;
    margin: 2px 0 8px;
}

.recording-editor__actions,
.lesson-journal-actions,
.lesson-section-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 9px;
}

.lesson-journal-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
    gap: 12px;
}

.lesson-journal-student {
    display: grid;
    min-width: 0;
    margin: 0;
    padding: 17px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 13px;
    border: 1px solid var(--color-border);
    border-radius: 13px;
    background: var(--color-surface-soft);
}

.lesson-journal-student.is-former {
    opacity: 0.65;
}

.lesson-journal-student legend {
    padding: 0 5px;
    font-weight: 750;
}

.lesson-journal-student legend small {
    display: block;
    color: var(--color-muted);
    font-size: 0.7rem;
    font-weight: 600;
}

.lesson-journal-student > div {
    display: grid;
    gap: 5px;
}

.lesson-journal-student__comment {
    grid-column: 1 / -1;
}

.lesson-journal-actions {
    margin-top: 16px;
}

.lesson-journal-save-status {
    color: var(--color-success, #26734d);
    font-size: 0.9rem;
    font-weight: 650;
}

.lesson-journal-save-status.is-error {
    color: var(--color-danger, #b42318);
}

.lesson-record-list,
.submission-card-list {
    display: grid;
    gap: 10px;
}

.lesson-record-list article,
.submission-card,
.homework-summary-card {
    padding: 18px;
    border: 1px solid var(--color-border);
    border-radius: 13px;
    background: var(--color-surface-soft);
}

.lesson-record-list article {
    display: grid;
    gap: 4px;
}

.lesson-record-list p,
.homework-summary-card > p,
.submission-card > p {
    margin: 10px 0 0;
}

.homework-deadline,
.submission-result {
    display: flex;
    margin: 16px 0;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 18px;
}

.homework-deadline span,
.submission-result dt {
    color: var(--color-muted);
}

.lesson-section-actions {
    margin-top: 18px;
}

.submissions-section {
    margin-top: 30px;
    padding-top: 26px;
    border-top: 1px solid var(--color-border);
}

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

.submission-card header > div {
    display: grid;
    gap: 2px;
}

.submission-result {
    align-items: stretch;
}

.submission-result > div {
    min-width: 160px;
}

.submission-result dt,
.submission-result dd {
    margin: 0;
}

/* Подтверждение ролей. */
.role-request-page {
    display: grid;
    width: 100%;
    margin: 0 auto;
    gap: 20px;
}

.role-request-list {
    display: grid;
    gap: 11px;
}

.role-request-card {
    display: grid;
    padding: 18px;
    grid-template-columns: minmax(240px, 1fr) minmax(180px, 0.65fr) auto;
    align-items: center;
    gap: 18px;
    border: 1px solid var(--color-border);
    border-radius: 14px;
    background: var(--color-surface);
}

.role-request-card__person {
    display: grid;
    grid-template-columns: 44px minmax(0, 1fr);
    align-items: center;
    gap: 12px;
}

.role-request-card__avatar {
    display: grid;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--color-accent);
    color: #fff;
    font-weight: 750;
    place-items: center;
}

.role-request-card__person > div,
.role-request-card__role {
    display: grid;
    min-width: 0;
    gap: 3px;
}

.role-request-card__person span:not(.role-request-card__avatar) {
    overflow: hidden;
    color: var(--color-muted);
    font-size: 0.82rem;
    text-overflow: ellipsis;
}

.role-request-card__role .status {
    justify-self: start;
}

.role-request-card__actions {
    display: flex;
    margin: 0;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 7px;
}

/* Редактирование участия ученика не конкурирует с основной строкой. */
.enrollment-editor {
    min-width: 190px;
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: 10px;
    background: var(--color-surface-soft);
}

.enrollment-editor > summary {
    font-size: 0.82rem;
    font-weight: 750;
    cursor: pointer;
}

.enrollment-editor .finish-enrollment-form {
    display: grid;
    width: 100%;
    margin-top: 12px;
    grid-template-columns: 1fr;
    gap: 10px;
}

/* Участники чата. */
.chat-participants {
    margin: 16px 0 0;
    padding: 0;
    overflow: hidden;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    background: var(--color-surface-soft);
}

.chat-participants > summary {
    display: grid;
    padding: 15px 17px;
    grid-template-columns: minmax(0, 1fr) auto 10px;
    align-items: center;
    gap: 8px;
    color: var(--color-muted);
    font-size: 0.88rem;
    font-weight: 750;
    cursor: pointer;
    list-style: none;
}

.chat-participants > summary::-webkit-details-marker {
    display: none;
}

.chat-participants > summary::after {
    width: 7px;
    height: 7px;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    content: "";
    transform: rotate(45deg) translate(-2px, -2px);
    transition: transform 150ms ease;
}

.chat-participants[open] > summary::after {
    transform: rotate(225deg) translate(-1px, -1px);
}

.chat-participants__content {
    padding: 0 14px 14px;
    border-top: 1px solid var(--color-border);
}

.chat-participants__content > .helptext {
    margin-bottom: 0;
}

.chat-participant-list {
    display: grid;
    max-height: min(52vh, 460px);
    margin-top: 12px;
    gap: 7px;
    overflow-y: auto;
}

.chat-participant {
    display: grid;
    padding: 8px;
    grid-template-columns: 30px minmax(0, 1fr);
    align-items: center;
    gap: 10px;
    border-radius: 9px;
    background: var(--color-surface);
}

.chat-participant .chat-avatar {
    width: 30px;
    height: 30px;
    border-radius: 9px;
    font-size: 0.62rem;
}

.chat-participant > div {
    display: grid;
    min-width: 0;
    gap: 1px;
}

.chat-participant span {
    color: var(--color-muted);
    font-size: 0.75rem;
}

@media (max-width: 820px) {
    .lesson-learning-hero,
    .submission-card header {
        align-items: stretch;
        flex-direction: column;
    }

    .lesson-learning-hero > .button {
        align-self: flex-start;
    }

    .role-request-card {
        grid-template-columns: 1fr;
    }

    .role-request-card__actions {
        justify-content: flex-start;
    }

    .audit-row--student {
        flex-direction: column;
    }

    .enrollment-editor {
        width: 100%;
    }

}

@media (max-width: 560px) {
    .lesson-learning-section {
        padding: 19px;
    }

    .lesson-learning-meta,
    .lesson-learning-meta > span,
    .lesson-journal-actions > *,
    .recording-editor__actions > *,
    .role-request-card__actions > * {
        width: 100%;
    }

    .lesson-journal-student {
        grid-template-columns: 1fr;
    }

    .lesson-journal-student__comment {
        grid-column: auto;
    }

    .chat-composer__controls {
        align-items: stretch;
        flex-wrap: wrap;
    }

    .chat-composer__controls textarea {
        width: calc(100% - 56px);
    }

    .chat-composer__controls > button {
        width: 100%;
    }
}

/* Общая композиция для служебных страниц, форм и компактных списков. */
.workspace-page {
    display: grid;
    width: 100%;
    margin: 0 auto;
    gap: 24px;
}

/* Вложенные таблицы прокручиваются внутри карточки, не расширяя страницу. */
.workspace-page > *,
.course-workspace > *,
.lesson-learning-page > *,
.dashboard-main > *,
.dashboard-sidebar > * {
    min-width: 0;
}

.workspace-page--narrow {
    width: 100%;
}

.workspace-page > .page-heading,
.workspace-page > .audit-section {
    margin: 0;
}

.stack-form {
    display: grid;
    gap: 11px;
}

.stack-form > p {
    margin: 0;
}

.stack-form .form-actions {
    margin-top: 13px;
}

.notice-panel--neutral {
    border-color: var(--color-border);
    color: var(--color-muted);
    background: var(--color-surface-soft);
}

.count-badge {
    display: inline-grid;
    min-width: 30px;
    min-height: 30px;
    padding: 4px 9px;
    border-radius: 999px;
    color: var(--color-muted);
    background: var(--color-surface-soft);
    font-size: 0.78rem;
    font-weight: 750;
    place-items: center;
}

.family-unlinked-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
}

.family-unlinked-section {
    padding: 0;
    overflow: hidden;
}

.family-unlinked-disclosure > summary {
    display: flex;
    padding: 22px 24px;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    cursor: pointer;
    list-style: none;
}

.family-unlinked-disclosure > summary::-webkit-details-marker {
    display: none;
}

.family-unlinked-disclosure > summary > span:first-child {
    display: grid;
    gap: 4px;
}

.family-unlinked-disclosure > summary strong {
    font-size: 1.12rem;
}

.family-unlinked-disclosure__action {
    flex: 0 0 auto;
    color: var(--color-muted);
    font-size: 0.84rem;
    font-weight: 700;
}

.family-unlinked-disclosure__collapse,
.family-unlinked-disclosure[open] .family-unlinked-disclosure__expand {
    display: none;
}

.family-unlinked-disclosure[open] .family-unlinked-disclosure__collapse {
    display: inline;
}

.family-unlinked-grid {
    padding: 0 24px 24px;
    border-top: 1px solid var(--color-border);
}

.family-unlinked-grid > section {
    min-width: 0;
    padding-top: 22px;
}

.family-unlinked-grid__heading {
    display: flex;
    margin-bottom: 12px;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.family-unlinked-grid h3 {
    margin: 0;
}

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

.entity-card {
    display: flex;
    min-width: 0;
    padding: 16px 18px;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    background: var(--color-surface-soft);
}

.entity-card__main {
    display: grid;
    min-width: 0;
    gap: 7px;
    overflow-wrap: anywhere;
}

.entity-card__main > span,
.entity-card__main > small {
    color: var(--color-muted);
    font-size: 0.83rem;
}

.entity-card__main > strong {
    line-height: 1.35;
}

.entity-card__email {
    display: flex;
    min-width: 0;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 4px 8px;
}

.entity-card__email small {
    color: var(--color-muted);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.entity-card__email a {
    min-width: 0;
    overflow-wrap: anywhere;
    font-size: 0.84rem;
}

.entity-card--compact {
    padding: 13px 14px;
}

.entity-card__actions,
.inline-actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 8px;
}

.entity-card__actions form,
.inline-actions form {
    margin: 0;
}

.relation-pair {
    display: grid;
    min-width: 0;
    flex: 1;
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
    align-items: center;
    gap: 14px;
}

.relation-pair > div {
    display: grid;
    min-width: 0;
    gap: 2px;
}

.relation-pair span:not(.relation-pair__arrow),
.relation-pair small {
    overflow: hidden;
    color: var(--color-muted);
    font-size: 0.8rem;
    text-overflow: ellipsis;
}

.relation-pair__arrow {
    color: var(--color-muted);
    font-size: 1.15rem;
}

.owner-card {
    display: grid;
    padding: 18px;
    grid-template-columns: 48px minmax(0, 1fr);
    align-items: center;
    gap: 14px;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    background: var(--color-surface-soft);
}

.owner-card__avatar {
    display: grid;
    width: 48px;
    height: 48px;
    border-radius: 14px;
    color: #fff;
    background: var(--color-text);
    font-size: 1rem;
    font-weight: 800;
    place-items: center;
}

.owner-card > div {
    display: grid;
    min-width: 0;
    gap: 3px;
}

.owner-card span {
    overflow: hidden;
    color: var(--color-muted);
    font-size: 0.82rem;
    text-overflow: ellipsis;
}

.system-state {
    display: grid;
    justify-items: center;
    gap: 12px;
    text-align: center;
}

.system-state > h1,
.system-state > h2,
.system-state > p {
    margin: 0;
}

.system-state__mark {
    display: grid;
    width: 54px;
    height: 54px;
    border-radius: 17px;
    color: #276143;
    background: #e7f4ec;
    font-size: 1.5rem;
    font-weight: 800;
    place-items: center;
}

.system-state__mark--muted {
    color: var(--color-muted);
    background: var(--color-surface-soft);
}

.system-state-page {
    display: grid;
    min-height: 100vh;
    padding: 28px;
    background: var(--color-bg);
    place-items: center;
}

.system-state-card {
    display: grid;
    width: min(100%, 620px);
    padding: clamp(30px, 6vw, 54px);
    justify-items: center;
    gap: 14px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
    background: var(--color-surface);
    box-shadow: var(--shadow-soft);
    text-align: center;
}

.system-state-card h1,
.system-state-card p {
    margin: 0;
}

.system-state__code {
    margin: 0;
    color: var(--color-muted);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.revision-list {
    display: grid;
    gap: 14px;
}

.revision-card {
    display: grid;
    padding: clamp(20px, 4vw, 28px);
    gap: 18px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
    background: var(--color-surface);
}

.revision-card > header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 18px;
}

.revision-card h2,
.revision-card p {
    margin: 0;
}

.revision-card__description,
.submission-answer {
    padding: 15px 17px;
    border-radius: 11px;
    background: var(--color-surface-soft);
    white-space: pre-wrap;
}

.compact-definition {
    display: grid;
    margin: 0;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.compact-definition > div {
    display: grid;
    gap: 3px;
}

.compact-definition dt {
    color: var(--color-muted);
    font-size: 0.76rem;
}

.compact-definition dd {
    margin: 0;
    font-weight: 700;
}

.file-link-list {
    display: flex;
    margin: 0;
    padding: 0;
    flex-wrap: wrap;
    gap: 8px;
    list-style: none;
}

.file-link {
    display: inline-flex;
    max-width: 100%;
    min-height: 34px;
    padding: 7px 11px;
    align-items: center;
    border: 1px solid var(--color-border);
    border-radius: 9px;
    color: var(--color-text);
    background: var(--color-surface-soft);
    font-size: 0.8rem;
    font-weight: 700;
    text-decoration: none;
    overflow-wrap: anywhere;
}

.file-link:hover {
    border-color: var(--color-border-strong);
    background: var(--color-surface);
}

.danger-disclosure {
    margin: 0;
}

.status--approved {
    color: #276143;
    background: #e7f4ec;
}

.status--pending {
    color: #755d1a;
    background: #fff5d7;
}

.status--warning {
    color: #b05a00;
    background: #fff4e5;
}

.status--rejected,
.status--revoked,
.status--terminated {
    color: #6d5353;
    background: #f3eaea;
}

@media (max-width: 700px) {
    .audit-summary {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .audit-event__main,
    .audit-event__fields {
        align-items: flex-start;
        flex-direction: column;
        gap: 8px;
    }

    .audit-event__actor {
        max-width: none;
        text-align: left;
    }

    .audit-event__technical dl {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .family-unlinked-disclosure > summary {
        padding: 18px;
        align-items: flex-start;
        flex-direction: column;
        gap: 10px;
    }

    .family-unlinked-grid {
        padding: 0 18px 18px;
    }

    .family-unlinked-grid {
        grid-template-columns: 1fr;
    }

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

    .entity-card__actions,
    .inline-actions {
        justify-content: flex-start;
    }

    .relation-pair {
        grid-template-columns: 1fr;
    }

    .relation-pair__arrow {
        transform: rotate(90deg);
        transform-origin: center;
    }

    .revision-card > header {
        flex-direction: column;
    }

    .compact-definition {
        grid-template-columns: 1fr;
    }
}

/* Блоки отложенной публикации и заблокированного контента */
.publication-settings {
    margin: 16px 0;
    padding: 16px 20px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-small);
    background: var(--color-surface-soft);
}

.publication-settings legend {
    padding: 0 8px;
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--color-text);
}

.publication-settings__fields {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    gap: 16px 20px;
    margin-top: 6px;
}

.publication-settings__field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.publication-settings__field > label {
    font-size: 0.86rem;
    font-weight: 700;
    color: var(--color-text);
}

.publication-settings__field--date {
    width: 250px;
    max-width: 100%;
}

.publication-settings__field--date .date-input-control {
    width: 100%;
}

.publication-settings__field--time {
    width: 150px;
    max-width: 100%;
}

.publication-settings__field--time input {
    width: 100%;
}

.publication-settings__hint {
    margin: 12px 0 0;
    font-size: 0.84rem;
    color: var(--color-muted);
    line-height: 1.45;
}

.homework-visibility-card {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    margin: 16px 0;
    padding: 16px 20px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-small);
    background: var(--color-surface-soft);
}

.homework-visibility-card input[type="checkbox"] {
    margin-top: 3px;
    flex-shrink: 0;
}

.homework-visibility-card label {
    display: block;
    font-weight: 700;
    font-size: 0.92rem;
    color: var(--color-text);
    margin-bottom: 4px;
    cursor: pointer;
}

.homework-visibility-card .helptext {
    margin: 0;
    display: block;
    line-height: 1.4;
    color: var(--color-muted);
    font-size: 0.84rem;
}

.locked-stub {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 24px 20px;
    margin-top: 10px;
    border: 1px dashed var(--color-border-strong);
    border-radius: var(--radius-small);
    background: var(--color-surface-soft);
    text-align: center;
    color: var(--color-muted);
}

.locked-stub__icon {
    font-size: 1.5rem;
    margin-bottom: 8px;
    line-height: 1;
}

.locked-stub strong {
    color: var(--color-text);
    font-size: 0.95rem;
}