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

:root {
    --color-bg: #f5f6f7;
    --color-surface: #ffffff;
    --color-text: #25282c;
    --color-muted: #697077;
    --color-border: #e2e5e8;
    --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 {
    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: 320px;
    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;
    line-height: 1.15;
    letter-spacing: -0.035em;
}

h1 {
    font-size: clamp(2rem, 5vw, 3.8rem);
}

h2 {
    font-size: clamp(1.45rem, 3vw, 2.15rem);
}

p {
    max-width: 72ch;
}

.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;
}

.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 {
    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;
    cursor: pointer;
}

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);
    scrollbar-gutter: stable;
}

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

.course-journal-table {
    width: max-content;
    min-width: 100%;
    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: 64px;
}

.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: 64px;
    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-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-not-done {
    color: #73474a;
}

.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 .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;
}

.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;
}

.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);
}

.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: #4f8a67;
}

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

.chat-list {
    display: grid;
    max-width: 860px;
    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;
    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);
    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: min(100%, 720px);
    margin: 0 auto;
}

.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-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;
}

.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-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: flex;
    padding: 14px;
    align-items: flex-end;
    gap: 10px;
    border-top: 1px solid var(--color-border);
}

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

.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 {
        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(2rem, 10vw, 2.8rem);
    }

    .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%;
    }

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

    .chat-composer textarea,
    .chat-composer button {
        width: 100%;
    }

    .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;
    }

    .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 .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-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;
    width: 22px;
    height: 22px;
    padding: 0;
    border: 1px solid var(--color-border-strong);
    border-radius: 50%;
    background: var(--color-surface);
    color: var(--color-muted);
    font-size: 0.78rem;
    line-height: 1;
    place-items: center;
    vertical-align: middle;
}

.info-tip:hover::after,
.info-tip: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%);
}

.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;
}

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

.notification-preference-table {
    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: min(100%, 960px);
    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;
}

.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 {
        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;
    }
}

@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-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%;
    }
}