/* ===== Корневые переменные (Цветовая палитра и шрифты) ===== */
:root {
   /*  --paper: #f6f2e9; */
    --paper-2: #fbf8f1;
	--paper: #ffffff;
    --card: #ffffff;
    --ink: #1f1d18;
    --ink-soft: #5b554a;
    --ink-faint: #8b8475;
    --line: #e3dccd;
    --line-strong: #d2c8b2;
    --accent: #3a4ea8;
    --accent-soft: #eaedf8;
    --accent-ink: #27357a;
    --gold: #9c7611;
    --gold-soft: #f7eccd;
    --green: #2f7d4f;
    --green-soft: #e6f2ea;
    --red: #b23b3b;
    --shadow: 0 1px 2px rgba(40, 34, 20, .06), 0 8px 24px rgba(40, 34, 20, .06);
    --radius: 14px;
    --mono: "SFMono-Regular", ui-monospace, Menlo, Consolas, monospace;
    --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;
    --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

    /* Цвета для блоков теории (пригодятся для разборов заданий) */
    --def: #3a4ea8;
    --def-bg: #f2f4fc;
    --def-ink: #27357a;
    --thm: #b91c4e;
    --thm-bg: #fdf2f7;
    --thm-ink: #8f1040;
    --cor: #2f7d4f;
    --cor-bg: #edf6f0;
    --cor-ink: #246b41;
    --rem: #9c7611;
    --rem-bg: #fbf4e1;
    --rem-ink: #83610f;
    --note: #b15f38;
    --note-bg: #fbf0ea;
    --note-ink: #934a28;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--sans);
    color: var(--ink);
    background: radial-gradient(1200px 500px at 15% -10%, #fffdf8 0%, transparent 60%), var(--paper);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
}

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

/* ---------- Шапка (Topbar) ---------- */
.topbar {
    position: sticky;
    top: 0;
    z-index: 30;
    display: grid;
    grid-template-columns: 320px 1fr;
    align-items: center;
    padding: 14px 0;
    background: rgba(251, 248, 241, .86);
    backdrop-filter: saturate(1.2) blur(8px);
    border-bottom: 1px solid var(--line);
}

.brand {
    display: flex;
    flex-direction: column;
    line-height: 1.15;
    padding: 0 18px 0 26px;
}

.brand b {
    font-family: var(--serif);
    font-size: 19px;
    letter-spacing: .2px;
    white-space: nowrap;
}

.brand span {
    font-size: 12px;
    color: var(--ink-faint);
}

.topbar-right {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    width: 100%;
    max-width: none;
    padding: 0 clamp(18px, 4vw, 54px);
}

.topbar-inner {
    display: flex;
    align-items: center;
    gap: 18px;
    flex-wrap: wrap;
    justify-content: flex-end;
    width: auto;
    max-width: none;
    margin-left: auto;
}

@media(max-width:920px) {
    .topbar {
        display: flex;
        flex-wrap: wrap;
        gap: 12px;
        padding: 12px 18px;
    }

    .brand {
        padding: 0;
        margin-right: auto;
    }

    .topbar-right {
        padding: 0;
        max-width: none;
    }

    .topbar-inner {
        max-width: none;
        width: auto;
    }
}

/* ---------- Кнопки ---------- */
.btn {
    font-family: var(--sans);
    font-size: 13.5px;
    font-weight: 600;
    color: var(--ink);
    background: var(--card);
    border: 1px solid var(--line-strong);
    border-radius: 10px;
    padding: 8px 14px;
    cursor: pointer;
    transition: .15s;
    white-space: nowrap;
    box-shadow: 0 1px 0 rgba(40, 34, 20, .03);
}

.btn:hover {
    border-color: var(--accent);
    color: var(--accent-ink);
    transform: translateY(-1px);
}

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

.btn.primary:hover {
    background: var(--accent-ink);
}

.btn.ghost {
    background: transparent;
    border-color: transparent;
    box-shadow: none;
}

.btn.ghost:hover {
    background: var(--accent-soft);
    border-color: var(--accent-soft);
}

/* ---------- Сетка (Layout) ---------- */
.layout {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 0;
    min-height: calc(100vh - 60px);
}

@media(max-width:920px) {
    .layout {
        grid-template-columns: 1fr;
    }

    .sidebar {
        display: none;
    }

    .sidebar.open {
        display: block;
    }
}

/* ---------- Боковое меню (Sidebar) ---------- */
.sidebar {
    border-right: 1px solid var(--line);
    padding: 18px 14px 60px;
    background: linear-gradient(180deg, #fbf8f1, #f6f2e9);
    overflow-y: auto;
    max-height: calc(100vh - 60px);
    position: sticky;
    top: 60px;
}

.side-title {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: .14em;
    color: var(--ink-faint);
    margin: 6px 8px 12px;
}

.side-sem {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: .12em;
    color: var(--ink-faint);
    margin: 14px 8px 6px;
    font-weight: 700;
}

.oral-link {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    text-align: left;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px 10px;
    border-radius: 9px;
    font-size: 13px;
    color: var(--ink-soft);
    font-family: var(--sans);
}

.oral-link:hover {
    background: var(--accent-soft);
    color: var(--accent-ink);
}

.oral-link.current {
    background: var(--accent);
    color: #fff;
    font-weight: 600;
}

.oral-link .oln {
    flex: none;
    width: 24px;
    height: 24px;
    border-radius: 7px;
    display: grid;
    place-items: center;
    font-family: var(--mono);
    font-size: 11.5px;
    font-weight: 700;
    background: var(--accent-soft);
    color: var(--accent-ink);
}

.oral-link.current .oln {
    background: rgba(255, 255, 255, .26);
    color: #fff;
}

.oral-link .olt {
    flex: 1;
    line-height: 1.28;
}

/* ---------- Основной контент (Main) ---------- */
.main {
    padding: 26px clamp(18px, 4vw, 54px) 90px;
    max-width: 1060px;
}

.oral-doc {
    max-width: 900px;
}

.oral-doc .od-title {
    font-family: var(--serif);
    font-size: 24px;
    line-height: 1.26;
    margin: 10px 0 3px;
}

/* Карточки для заданий */
.tk-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
    gap: 11px;
}

.tk-card {
    display: flex;
    gap: 13px;
    align-items: flex-start;
    text-align: left;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 14px 15px;
    cursor: pointer;
    box-shadow: var(--shadow);
    transition: .15s;
    font-family: var(--sans);
    width: 100%;
}

.tk-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
}

.tk-card .tk-no {
    flex: none;
    min-width: 58px;
    width: auto;
    height: 36px;
    padding: 0 8px;
    border-radius: 9px;
    display: grid;
    place-items: center;
    font-weight: 700;
    font-size: 14px;
    background: var(--accent-soft);
    color: var(--accent-ink);
    font-family: var(--mono);
    white-space: nowrap;
}

.tk-card b {
    display: block;
    font-size: 14px;
    line-height: 1.34;
    color: var(--ink);
}

/* ---------- Блоки теории и разборов ---------- */
.tblk {
    position: relative;
    border: 1px solid var(--line);
    border-left: 4px solid var(--line-strong);
    border-radius: 0 12px 12px 0;
    background: var(--card);
    padding: 13px 17px 14px;
    margin: 13px 0;
    box-shadow: 0 1px 2px rgba(40, 34, 20, .04);
}

.tblk .tk-head {
    display: flex;
    align-items: baseline;
    gap: 9px;
    flex-wrap: wrap;
    margin-bottom: 2px;
}

.tblk .tk-kind {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .06em;
    white-space: nowrap;
}

.tblk .tk-name {
    font-family: var(--serif);
    font-weight: 650;
    font-size: 15.5px;
    color: var(--ink);
}

.tblk .tk-body {
    font-size: 15px;
    color: var(--ink);
    margin-top: 6px;
}

/* Специфичные цвета блоков */
.tblk.def {
    border-left-color: var(--def);
    background: var(--def-bg);
}

.tblk.def .tk-kind {
    color: var(--def-ink);
}

.tblk.thm {
    border-left-color: var(--thm);
    background: var(--thm-bg);
}

.tblk.thm .tk-kind {
    color: var(--thm-ink);
}

.tblk.note {
    border-left-color: var(--note);
    background: var(--note-bg);
}

.tblk.note .tk-kind {
    color: var(--note-ink);
}

/* ---------- Окно авторизации (Новое) ---------- */
.overlay {
    position: fixed;
    top: 60px;
    left: 0;
    width: 100%;
    height: calc(100% - 60px);
    background: radial-gradient(1200px 500px at 15% -10%, #fffdf8 0%, transparent 60%), var(--paper);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
}

.login-card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: var(--shadow);
    width: 100%;
    max-width: 320px;
}

.login-card h2 {
    font-family: var(--serif);
    color: var(--ink);
    margin: 0 0 20px 0;
    text-align: center;
}

.login-card input {
    width: 100%;
    padding: 10px 12px;
    margin-bottom: 16px;
    border: 1px solid var(--line-strong);
    border-radius: 8px;
    font-family: var(--sans);
    font-size: 14px;
    box-sizing: border-box;
    background: var(--paper-2);
    transition: 0.2s;
}

.login-card input:focus {
    outline: none;
    border-color: var(--accent);
    background: var(--card);
}

.error-msg {
    color: var(--thm);
    /* Красный цвет для ошибок */
    font-size: 12.5px;
    text-align: center;
    margin: 12px 0 0 0;
    min-height: 15px;
}

/* Файловый инпут для загрузки решений */
.file-upload-wrap {
    margin-top: 15px;
    padding: 10px;
    border: 1px dashed var(--line-strong);
    border-radius: 8px;
    background: var(--paper-2);
}

.file-upload-wrap input[type="file"] {
    font-family: var(--sans);
    font-size: 12px;
}
/* ==========================================
   ГРУППЫ ЗАДАНИЙ В SIDEBAR
   ========================================== */

.side-group {
    margin-bottom: 8px;
}

.side-group summary {
    list-style: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 10px 14px;
    color: var(--accent-ink);
    font-weight: 700;
    font-size: 13px;
    border-radius: 8px;
    user-select: none;
}

.side-group summary::-webkit-details-marker {
    display: none;
}

.side-group summary::after {
    content: "▾";
    font-size: 12px;
    color: var(--ink-faint);
    transition: transform 0.2s ease;
}

.side-group:not([open]) summary::after {
    transform: rotate(-90deg);
}

.side-group summary:hover {
    background: var(--paper-2);
}

.side-group-count {
    margin-left: auto;
    color: var(--ink-faint);
    font-size: 11px;
    font-weight: 600;
}

.side-group-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 2px 0 8px;
}

.task-menu-row {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
}

.task-menu-number {
    flex: 0 0 auto;
    min-width: 24px;
    color: var(--ink-faint);
    font-size: 12px;
}

.task-menu-title {
    flex: 1;
    text-align: left;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.task-type-badge {
    flex: 0 0 auto;
    padding: 2px 7px;
    border-radius: 10px;
    font-size: 10px;
    font-weight: 700;
    line-height: 1.3;
    white-space: nowrap;
}

.task-type-theory {
    background: #eef2ff;
    color: #4f46e5;
}

.task-type-homework {
    background: #fff7ed;
    color: #c2410c;
}

/* ==========================================
   ДОПОЛНЕНИЯ: ТИПЫ ЗАДАНИЙ И АДМИН-ПАНЕЛЬ
   ========================================== */

.task-type-variant {
    background: #eef8f2;
    color: #28704a;
}

.page-loading {
    text-align: center;
    padding: 40px;
    color: var(--ink-faint);
}

.page-subtitle {
    color: var(--ink-faint);
    margin: 4px 0 20px;
    font-size: 13px;
}

.page-heading-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 18px;
}

.page-heading-row h2 {
    margin: 0;
    font-family: var(--serif);
}

.side-placeholder,
.side-empty {
    padding: 8px 14px;
    color: var(--ink-faint);
    font-size: 12px;
}

.admin-task-group,
.assignment-group {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--card);
    margin-bottom: 14px;
    overflow: hidden;
}

.admin-task-group > summary,
.assignment-group > summary {
    list-style: none;
    cursor: pointer;
    user-select: none;
}

.admin-task-group > summary::-webkit-details-marker,
.assignment-group > summary::-webkit-details-marker {
    display: none;
}

.admin-task-group > summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 16px 18px;
    background: var(--paper-2);
}

.admin-task-group > summary > div {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.admin-task-group > summary strong {
    font-size: 15px;
    color: var(--accent-ink);
}

.admin-task-group > summary span:not(.admin-group-count) {
    color: var(--ink-faint);
    font-size: 12px;
}

.admin-group-count {
    min-width: 30px;
    text-align: center;
    padding: 3px 8px;
    border-radius: 999px;
    background: var(--accent-soft);
    color: var(--accent-ink);
    font-size: 11px;
    font-weight: 700;
}

.admin-task-group-body {
    padding: 16px;
}

.admin-empty-box,
.assignment-empty {
    color: var(--ink-faint);
    font-size: 12px;
    padding: 10px 12px;
}

.admin-task-card-body {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    min-width: 0;
}

.admin-task-card-body b {
    line-height: 1.3;
}

.admin-preview-area {
    margin-top: 28px;
    scroll-margin-top: 90px;
}

.preview-heading,
.task-page-heading {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 15px;
}

.preview-heading h3,
.task-page-heading h2 {
    margin: 0;
    font-family: var(--serif);
}

.pdf-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 10px;
    box-shadow: var(--shadow);
}

.work-pdf-card {
    margin-bottom: 24px;
}

.pdf-frame {
    width: 100%;
    height: 750px;
    border: none;
    border-radius: 8px;
    display: block;
}

.error-box {
    padding: 15px;
    background: #fff2f2;
    border: 1px solid #ffcccc;
    border-radius: 8px;
}

/* ---------- Ученики в админ-панели ---------- */

.student-admin-list,
.submission-admin-list {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.student-admin-card,
.admin-submission-card,
.submission-container {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
}

.student-admin-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
}

.student-admin-head strong {
    color: var(--accent-ink);
    font-size: 16px;
}

.student-admin-head span {
    color: var(--ink-faint);
    font-size: 12px;
    margin-left: 7px;
}

.assignment-group {
    margin: 9px 0 0;
    border-radius: 10px;
    box-shadow: none;
}

.assignment-group > summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    color: var(--ink-soft);
    font-size: 13px;
    font-weight: 700;
    background: var(--paper-2);
}

.assignment-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 12px;
}

.assign-toggle-btn {
    font-size: 12px;
    padding: 6px 10px;
    max-width: 100%;
    white-space: normal;
    text-align: left;
}

.assign-toggle-btn.assigned {
    background: var(--green-soft);
    color: var(--green);
    border-color: var(--green);
}

.assign-toggle-btn.assigned:hover {
    background: #fbeaea;
    color: var(--red);
    border-color: var(--red);
}

/* ---------- Форма ответов ученика ---------- */

.submission-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 16px;
}

.submission-head h3 {
    margin: 0;
    font-family: var(--serif);
}

.submission-status-badge {
    flex: 0 1 auto;
    font-size: 12px;
    font-weight: 600;
    padding: 6px 10px;
    border-radius: 999px;
    text-align: center;
}

.status-draft {
    background: var(--accent-soft);
    color: var(--accent-ink);
}

.status-pending {
    background: var(--gold-soft);
    color: var(--gold);
}

.status-checked {
    background: var(--green-soft);
    color: var(--green);
}

.task-item-box {
    background: var(--paper-2);
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 15px;
    margin-bottom: 15px;
}

.task-item-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
}

.task-item-head strong {
    color: var(--accent-ink);
}

.answer-two-columns {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 10px;
}

.task-item-box label {
    display: block;
    margin-bottom: 4px;
    color: var(--ink-faint);
    font-size: 11px;
}

.task-item-box input[type="text"],
.task-item-box textarea {
    width: 100%;
    padding: 8px;
    border: 1px solid var(--line-strong);
    border-radius: 6px;
    background: #fff;
    color: var(--ink);
}

.task-item-box textarea {
    min-height: 72px;
    resize: vertical;
    font-family: var(--mono);
    font-size: 12px;
}

.task-item-box input[type="file"] {
    width: 100%;
    font-size: 12px;
    padding: 4px 0;
}

.saved-file-link,
.admin-file-link {
    font-size: 11px;
    font-weight: 600;
    margin-left: 6px;
}

.save-item-row {
    display: flex;
    justify-content: flex-end;
    margin-top: 10px;
}

.grade-badge {
    color: #fff;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
}

.grade-correct {
    background: var(--green);
}

.grade-wrong {
    background: var(--thm);
}

.grade-waiting {
    color: var(--ink-faint);
    font-size: 11px;
}

.submission-footer {
    border-top: 1px solid var(--line);
    padding-top: 18px;
    margin-top: 20px;
}

.submit-all-btn {
    width: 100%;
    padding: 12px;
    font-size: 15px;
}

.submission-note {
    padding: 10px 12px;
    border-radius: 8px;
    text-align: center;
    font-size: 12px;
}

.pending-note {
    background: var(--gold-soft);
    color: var(--gold);
}

.locked-note {
    background: var(--green-soft);
    color: var(--green);
}

#submission-status {
    text-align: center;
    font-size: 13px;
    margin: 10px 0 0;
}

/* ---------- Проверка работ ---------- */

.admin-submission-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 12px;
}

.admin-submission-head strong {
    font-size: 16px;
}

.admin-submission-meta {
    color: var(--ink-faint);
    font-size: 12px;
    margin-top: 3px;
}

.admin-submission-badges {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 7px;
}

.admin-status-badge {
    color: #fff;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 600;
}

.admin-status-pending {
    background: var(--gold);
}

.admin-status-checked {
    background: var(--green);
}

.admin-answer-list {
    background: var(--paper-2);
    border-radius: 9px;
    padding: 12px;
}

.admin-answer-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    padding: 10px 0;
    border-bottom: 1px solid var(--line);
}

.admin-answer-row:last-child {
    border-bottom: none;
}

.admin-answer-content {
    min-width: 0;
    flex: 1;
}

.admin-answer-content > div:first-child {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 8px;
}

.admin-code-block {
    margin: 8px 0 0;
    padding: 9px;
    border-radius: 6px;
    background: #272822;
    color: #f8f8f2;
    font-family: var(--mono);
    font-size: 11px;
    overflow-x: auto;
    white-space: pre-wrap;
}

.grade-actions {
    display: flex;
    gap: 6px;
    flex: 0 0 auto;
}

.grade-actions .btn {
    padding: 5px 9px;
    font-size: 11px;
}

.grade-selected-correct {
    background: var(--green) !important;
    color: #fff !important;
    border-color: var(--green) !important;
}

.grade-selected-wrong {
    background: var(--thm) !important;
    color: #fff !important;
    border-color: var(--thm) !important;
}

.admin-submission-actions {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    margin-top: 12px;
}

.checked-finish-note {
    color: var(--green);
    font-size: 12px;
    font-weight: 600;
}

@media (max-width: 760px) {
    .pdf-frame {
        height: 620px;
    }

    .submission-head,
    .admin-submission-head,
    .admin-answer-row {
        flex-direction: column;
        align-items: stretch;
    }

    .answer-two-columns {
        grid-template-columns: 1fr;
    }

    .grade-actions,
    .admin-submission-badges {
        justify-content: flex-start;
    }
}


/* ============================================================
   СОВМЕСТНЫЙ РЕЖИМ: ТЕОРИЯ + ДЗ / ВАРИАНТ
   ============================================================ */

.main.study-split-active {
    max-width: none;
    width: 100%;
}

.theory-companion-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
    padding: 12px 14px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: var(--paper-2);
}

.theory-companion-copy {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.theory-companion-copy strong {
    color: var(--accent-ink);
    font-size: 13px;
}

.theory-companion-copy span {
    color: var(--ink-faint);
    font-size: 12px;
}

.theory-companion-actions {
    flex: 0 1 360px;
}

.theory-companion-select {
    width: 100%;
    min-width: 220px;
    padding: 8px 10px;
    border: 1px solid var(--line-strong);
    border-radius: 9px;
    background: var(--card);
    color: var(--ink);
    font-family: var(--sans);
    font-size: 13px;
    cursor: pointer;
}

.theory-companion-select:focus {
    outline: none;
    border-color: var(--accent);
}

.student-workspace {
    min-width: 0;
}

.student-workspace.split-view {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 16px;
    align-items: start;
}

.study-pane {
    min-width: 0;
}

.student-workspace.split-view .study-pane {
    max-height: calc(100vh - 165px);
    overflow-y: auto;
    scrollbar-gutter: stable;
    padding-right: 3px;
}

.companion-theory-pane[hidden] {
    display: none !important;
}

.study-pane-header {
    position: sticky;
    top: 0;
    z-index: 4;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
    padding: 10px 12px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: rgba(255, 255, 255, .96);
    backdrop-filter: blur(6px);
}

.study-pane-header > div {
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.study-pane-header strong {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.study-pane-kicker {
    color: var(--ink-faint);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
}

.compact-btn {
    flex: 0 0 auto;
    padding: 6px 9px;
    font-size: 12px;
}

.companion-theory-loading {
    margin-bottom: 10px;
    padding: 10px 12px;
    border-radius: 9px;
    background: var(--paper-2);
    color: var(--ink-faint);
    font-size: 12px;
}

.companion-pdf-card {
    margin-bottom: 0;
}

.student-workspace.split-view .pdf-frame {
    height: calc(100vh - 235px);
    min-height: 560px;
}

.student-workspace.split-view .work-pdf-card {
    margin-bottom: 16px;
}

.student-workspace.split-view .submission-container {
    padding: 16px;
}

.student-workspace.split-view .submission-head {
    flex-direction: column;
    align-items: stretch;
}

.student-workspace.split-view .answer-two-columns {
    grid-template-columns: 1fr;
}

@media (max-width: 1250px) {
    .student-workspace.split-view {
        grid-template-columns: 1fr;
    }

    .student-workspace.split-view .study-pane {
        max-height: none;
        overflow: visible;
        padding-right: 0;
    }

    .student-workspace.split-view .pdf-frame {
        height: 680px;
        min-height: 0;
    }
}

@media (max-width: 760px) {
    .theory-companion-toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .theory-companion-actions {
        flex-basis: auto;
    }

    .theory-companion-select {
        min-width: 0;
    }

    .student-workspace.split-view .pdf-frame {
        height: 560px;
    }
}

/* ==========================================
   АДМИНИСТРИРОВАНИЕ
   ========================================== */

.btn.danger {
    border-color: #d8a3a3;
    color: var(--red);
    background: #fffafa;
}

.btn.danger:hover {
    border-color: var(--red);
    color: #8f2525;
    background: #fff2f2;
}

.admin-tools-section {
    margin-top: 22px;
    padding: 22px;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.admin-tools-section + .admin-tools-section {
    margin-top: 26px;
}

.admin-tools-section-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 16px;
}

.admin-tools-section-head h3 {
    margin: 0 0 4px;
    font-family: var(--serif);
    font-size: 20px;
}

.admin-tools-section-head p {
    margin: 0;
    color: var(--ink-faint);
    font-size: 13px;
}

.admin-form-card {
    margin-bottom: 18px;
    padding: 16px;
    background: var(--paper-2);
    border: 1px solid var(--line);
    border-radius: 12px;
}

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

.student-create-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.task-upload-grid {
    grid-template-columns: 150px 180px minmax(220px, 1fr) minmax(250px, 1.1fr);
}

.admin-form-grid label {
    display: flex;
    flex-direction: column;
    gap: 5px;
    min-width: 0;
}

.admin-form-grid label > span {
    font-size: 11px;
    font-weight: 700;
    color: var(--ink-faint);
}

.admin-form-grid input,
.admin-form-grid select {
    width: 100%;
    min-width: 0;
    padding: 9px 10px;
    border: 1px solid var(--line-strong);
    border-radius: 8px;
    background: #fff;
    color: var(--ink);
    font: inherit;
    font-size: 13px;
}

.admin-form-grid input:focus,
.admin-form-grid select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(58, 78, 168, .08);
}

.admin-file-field input[type="file"] {
    padding: 7px;
}

.admin-form-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 14px;
}

.admin-form-hint {
    color: var(--ink-faint);
    font-size: 12px;
}

.admin-upload-note {
    margin-top: 12px;
    padding: 10px 12px;
    border-radius: 8px;
    background: #fff;
    border: 1px dashed var(--line-strong);
    color: var(--ink-soft);
    font-size: 12px;
    line-height: 1.45;
}

.admin-action-result {
    margin-top: 12px;
    padding: 11px 12px;
    border-radius: 8px;
    font-size: 12.5px;
}

.admin-action-result:empty {
    display: none;
}

.admin-action-result.success {
    background: var(--green-soft);
    color: var(--green);
    border: 1px solid rgba(47, 125, 79, .25);
}

.admin-action-result.error {
    background: #fff1f1;
    color: var(--red);
    border: 1px solid rgba(178, 59, 59, .22);
}

.admin-action-result.progress {
    background: var(--accent-soft);
    color: var(--accent-ink);
    border: 1px solid rgba(58, 78, 168, .18);
}

.credentials-box {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin: 8px 0;
}

.credentials-box code,
.admin-action-result code,
.admin-upload-note code {
    font-family: var(--mono);
    background: rgba(255, 255, 255, .7);
    padding: 2px 5px;
    border-radius: 5px;
}

.admin-entity-list,
.admin-task-manage-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.admin-entity-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 13px 14px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: #fff;
}

.admin-entity-main {
    display: flex;
    flex-direction: column;
    gap: 3px;
    min-width: 0;
}

.admin-entity-main > span {
    color: var(--ink-faint);
    font-size: 12px;
}

.admin-entity-main small {
    color: var(--ink-faint);
    font-size: 11.5px;
    overflow-wrap: anywhere;
}

.admin-entity-actions {
    display: flex;
    gap: 8px;
    flex: 0 0 auto;
}

.admin-task-manage-title {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

@media (max-width: 1050px) {
    .student-create-grid,
    .task-upload-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 680px) {
    .admin-tools-section {
        padding: 16px;
    }

    .student-create-grid,
    .task-upload-grid {
        grid-template-columns: 1fr;
    }

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

    .admin-entity-actions {
        flex-wrap: wrap;
    }
}


/* ============================================================
   ОБЯЗАТЕЛЬНАЯ СМЕНА ВРЕМЕННОГО ПАРОЛЯ
   ============================================================ */

.password-change-overlay {
    z-index: 140;
}

.password-change-card {
    max-width: 390px;
}

.password-change-icon {
    font-size: 34px;
    text-align: center;
    margin-bottom: 8px;
}

.password-change-intro {
    margin: -8px 0 22px;
    color: var(--ink-soft);
    font-size: 13px;
    text-align: center;
    line-height: 1.5;
}

.password-change-field {
    display: block;
    margin-bottom: 14px;
}

.password-change-field > span {
    display: block;
    margin-bottom: 6px;
    color: var(--ink-soft);
    font-size: 12px;
    font-weight: 700;
}

.password-change-field input {
    margin-bottom: 0;
}

.password-change-submit {
    width: 100%;
    margin-top: 4px;
    padding: 10px 14px;
}

.admin-student-name-line {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}

.password-status-badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 7px;
    border-radius: 999px;
    font-size: 10px;
    font-weight: 700;
    line-height: 1.4;
}

.password-status-badge.pending {
    background: var(--gold-soft);
    color: var(--gold);
}

.password-status-badge.ready {
    background: var(--green-soft);
    color: var(--green);
}

/* ============================================================
   КОММЕНТАРИИ, ДОРАБОТКА, АРХИВ, УВЕДОМЛЕНИЯ, BACKUP
   ============================================================ */

.status-revision {
    background: var(--gold-soft);
    color: var(--gold);
}

.admin-status-revision {
    background: #fff3cd;
    color: #8a6500;
}

.teacher-general-comment,
.teacher-item-comment {
    border: 1px solid #d8dff8;
    background: #f5f7ff;
    border-radius: 10px;
    padding: 12px 14px;
    margin: 12px 0;
    color: var(--ink);
    font-size: 13px;
}

.teacher-general-comment strong,
.teacher-item-comment strong {
    display: block;
    color: var(--accent-ink);
    margin-bottom: 5px;
}

.admin-general-comment-label,
.admin-item-comment-label {
    display: block;
    margin-top: 12px;
}

.admin-general-comment-label > span,
.admin-item-comment-label > span {
    display: block;
    font-size: 11.5px;
    font-weight: 700;
    color: var(--ink-soft);
    margin-bottom: 5px;
}

.admin-general-comment,
.admin-item-comment {
    width: 100%;
    min-height: 72px;
    resize: vertical;
    padding: 9px 10px;
    border: 1px solid var(--line-strong);
    border-radius: 8px;
    font-family: var(--sans);
    font-size: 13px;
    background: white;
}

.admin-general-comment:focus,
.admin-item-comment:focus {
    outline: none;
    border-color: var(--accent);
}

.admin-general-comment-label {
    margin: 14px 0;
    padding: 12px;
    background: var(--paper-2);
    border-radius: 10px;
}

.revision-wait-note {
    font-size: 13px;
    font-weight: 700;
    color: var(--gold);
}

.assignment-task-control {
    display: inline-flex;
    align-items: stretch;
    gap: 3px;
}

.assignment-task-control.archived .assign-toggle-btn {
    opacity: .72;
}

.archive-toggle-btn {
    padding: 6px 9px;
    min-width: 34px;
}

.archive-side-group summary {
    color: var(--ink-soft);
}

.archived-task-btn {
    opacity: .85;
}

.notification-wrap {
    position: relative;
}

.notification-bell {
    position: relative;
    padding: 7px 10px;
    font-size: 17px;
}

.notification-count {
    position: absolute;
    top: -3px;
    right: -4px;
    min-width: 18px;
    height: 18px;
    padding: 0 4px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    background: var(--red);
    color: white;
    font-size: 10px;
    font-weight: 800;
    border: 2px solid var(--card);
}

.notification-panel {
    position: absolute;
    right: 0;
    top: calc(100% + 8px);
    z-index: 100;
    width: min(380px, 90vw);
    max-height: 480px;
    overflow: hidden;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.notification-panel-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    padding: 12px 14px;
    border-bottom: 1px solid var(--line);
}

.notification-list {
    max-height: 410px;
    overflow-y: auto;
}

.notification-item {
    padding: 11px 14px;
    border-bottom: 1px solid var(--line);
    background: white;
}

.notification-item.unread {
    background: var(--accent-soft);
}

.notification-message {
    font-size: 13px;
    line-height: 1.4;
}

.notification-date {
    margin-top: 4px;
    color: var(--ink-faint);
    font-size: 10.5px;
}

.notification-empty {
    padding: 20px 14px;
    text-align: center;
    color: var(--ink-faint);
    font-size: 12px;
}

.backup-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 14px;
}

.backup-row small {
    display: block;
    margin-top: 3px;
    color: var(--ink-faint);
}

@media (max-width: 680px) {
    .notification-panel {
        position: fixed;
        top: 68px;
        right: 10px;
        left: 10px;
        width: auto;
    }

    .assignment-task-control {
        width: 100%;
    }

    .assignment-task-control .assign-toggle-btn {
        flex: 1;
    }
}

/* ============================================================
   СВОРАЧИВАЕМОЕ БОКОВОЕ МЕНЮ
   ============================================================ */

.layout {
    transition: grid-template-columns .2s ease;
}

.sidebar {
    min-width: 0;
    transition:
        opacity .16s ease,
        padding .2s ease,
        border-color .2s ease;
}

.main {
    min-width: 0;
}

.layout.sidebar-collapsed {
    grid-template-columns: 0 minmax(0, 1fr);
}

.layout.sidebar-collapsed .sidebar {
    width: 0;
    min-width: 0;
    padding-left: 0;
    padding-right: 0;
    border-right-color: transparent;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    overflow: hidden;
}

.layout.sidebar-collapsed .main {
    width: 100%;
    max-width: none;
}

.sidebar-toggle-btn {
    width: 36px;
    height: 36px;
    padding: 0;
    display: inline-grid;
    place-items: center;
    flex: 0 0 auto;
    font-size: 16px;
    line-height: 1;
}

@media (max-width: 920px) {
    .layout.sidebar-collapsed {
        grid-template-columns: 1fr;
    }

    .layout.sidebar-collapsed .sidebar {
        width: auto;
        padding: 18px 14px 60px;
        border-right: none;
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        overflow-y: auto;
    }

    .sidebar.open {
        display: block;
        position: relative;
        top: 0;
        max-height: none;
        border-right: none;
        border-bottom: 1px solid var(--line);
    }
}

/* ============================================================
   БОКОВАЯ ЗАКЛАДКА ДЛЯ СВОРАЧИВАНИЯ SIDEBAR
   ============================================================ */

.sidebar-toggle-btn {
    position: fixed;
    z-index: 45;
    top: 92px;
    left: 320px;
    width: 25px;
    height: 54px;
    padding: 0;
    border: 1px solid var(--line-strong);
    border-left: 0;
    border-radius: 0 10px 10px 0;
    background: rgba(251, 248, 241, .96);
    color: var(--ink-soft);
    box-shadow: 3px 1px 10px rgba(40, 34, 20, .08);
    display: grid;
    place-items: center;
    font-family: var(--sans);
    font-size: 23px;
    line-height: 1;
    cursor: pointer;
    transition:
        left .2s ease,
        background .15s ease,
        color .15s ease,
        border-color .15s ease;
}

.sidebar-toggle-btn:hover {
    background: var(--accent-soft);
    color: var(--accent-ink);
    border-color: var(--accent);
}

.sidebar-toggle-btn.sidebar-is-collapsed {
    left: 0;
}

@media (max-width: 920px) {
    .sidebar-toggle-btn {
        top: 76px;
        left: 0;
        width: 27px;
        height: 48px;
        font-size: 17px;
    }

    .sidebar-toggle-btn.sidebar-is-open {
        left: 0;
    }
}

/* ============================================================
   ПЛАВНОЕ РАСКРЫТИЕ SIDEBAR И ПОЛНАЯ ШИРИНА КОНТЕНТА
   ============================================================ */

/* Основная область всегда использует всю доступную ширину.
   Раньше max-width: 1060px оставлял большое пустое место справа. */
.main {
    width: 100%;
    max-width: none;
    min-width: 0;
}

/* Анимируем именно перераспределение ширины двух колонок. */
.layout {
    grid-template-columns: 320px minmax(0, 1fr);
    transition: grid-template-columns .34s cubic-bezier(.22, .61, .36, 1);
}

.layout.sidebar-collapsed {
    grid-template-columns: 0 minmax(0, 1fr);
}

/* Меню мягко исчезает одновременно со сжатием своей колонки. */
.sidebar {
    min-width: 0;
    overflow-x: hidden;
    transition:
        opacity .22s ease,
        padding-left .34s cubic-bezier(.22, .61, .36, 1),
        padding-right .34s cubic-bezier(.22, .61, .36, 1),
        border-color .22s ease;
}

.layout.sidebar-collapsed .sidebar {
    opacity: 0;
    padding-left: 0;
    padding-right: 0;
    border-right-color: transparent;
    pointer-events: none;
}

/* Закладка едет вместе с краем меню. */
.sidebar-toggle-btn {
    transition:
        left .34s cubic-bezier(.22, .61, .36, 1),
        background .15s ease,
        color .15s ease,
        border-color .15s ease,
        box-shadow .15s ease;
}

/* На узких экранах оставляем мобильную механику без горизонтальной анимации сетки. */
@media (max-width: 920px) {
    .layout,
    .layout.sidebar-collapsed {
        grid-template-columns: 1fr;
        transition: none;
    }
}

/* ============================================================
   СВЕТЛАЯ / ТЁМНАЯ ТЕМА
   ============================================================ */

html {
    background: var(--paper);
}

html[data-theme="dark"] {
    color-scheme: dark;

    --paper: #0f1218;
    --paper-2: #151a22;
    --card: #1a202a;
    --ink: #edf1f7;
    --ink-soft: #b7c0cc;
    --ink-faint: #818c9b;
    --line: #2a3240;
    --line-strong: #3a4658;

    --accent: #8394ff;
    --accent-soft: #252d4b;
    --accent-ink: #c8d0ff;

    --gold: #d9b45d;
    --gold-soft: #382f1d;
    --green: #72ce99;
    --green-soft: #183428;
    --red: #ed8585;

    --shadow: 0 1px 2px rgba(0, 0, 0, .28), 0 10px 30px rgba(0, 0, 0, .24);

    --def: #8c9cff;
    --def-bg: #212944;
    --def-ink: #cbd2ff;
    --thm: #e879a4;
    --thm-bg: #3b2030;
    --thm-ink: #ffb6d0;
    --cor: #72ce99;
    --cor-bg: #183428;
    --cor-ink: #a5e8bf;
    --rem: #d9b45d;
    --rem-bg: #382f1d;
    --rem-ink: #edd28b;
    --note: #e49a72;
    --note-bg: #3b2921;
    --note-ink: #ffc2a2;
}

body,
.topbar,
.btn,
.login-card,
.student-admin-card,
.admin-submission-card,
.submission-container,
.task-item-box,
.admin-tools-section,
.admin-form-card,
.admin-entity-row,
.notification-panel,
.notification-item,
.pdf-card {
    transition-property: background-color, color, border-color, box-shadow;
    transition-duration: .22s;
    transition-timing-function: ease;
}

html[data-theme="dark"] body {
    background:
        radial-gradient(1100px 480px at 15% -10%, rgba(92, 107, 178, .13) 0%, transparent 62%),
        var(--paper);
}

html[data-theme="dark"] .topbar {
    background: rgba(18, 22, 30, .9);
}

html[data-theme="dark"] .sidebar {
    background: linear-gradient(180deg, #151a22, #11151c);
}

html[data-theme="dark"] .sidebar-toggle-btn {
    background: rgba(24, 30, 40, .97);
    box-shadow: 3px 1px 12px rgba(0, 0, 0, .28);
}

html[data-theme="dark"] .sidebar-toggle-btn:hover {
    background: var(--accent-soft);
}

.theme-toggle-btn {
    width: 36px;
    height: 36px;
    padding: 0;
    display: inline-grid;
    place-items: center;
    flex: 0 0 auto;
    font-size: 17px;
    line-height: 1;
    border-radius: 10px;
}

.theme-toggle-btn:hover {
    transform: translateY(-1px) rotate(8deg);
}

html[data-theme="dark"] .pdf-card,
html[data-theme="dark"] .task-item-box input[type="text"],
html[data-theme="dark"] .task-item-box textarea,
html[data-theme="dark"] .admin-form-grid input,
html[data-theme="dark"] .admin-form-grid select,
html[data-theme="dark"] .admin-upload-note,
html[data-theme="dark"] .admin-entity-row,
html[data-theme="dark"] .admin-general-comment,
html[data-theme="dark"] .admin-item-comment,
html[data-theme="dark"] .notification-item {
    background: var(--card);
    color: var(--ink);
}

/* Сам PDF не перекрашиваем: учебный документ должен оставаться оригинальным. */
html[data-theme="dark"] .pdf-frame {
    background: #fff;
}

html[data-theme="dark"] .task-type-theory {
    background: #252d50;
    color: #bdc7ff;
}

html[data-theme="dark"] .task-type-homework {
    background: #3b2a1e;
    color: #f0b889;
}

html[data-theme="dark"] .task-type-variant {
    background: #193628;
    color: #9ce0b8;
}

html[data-theme="dark"] .assign-toggle-btn.assigned:hover,
html[data-theme="dark"] .btn.danger:hover,
html[data-theme="dark"] .admin-action-result.error {
    background: #3a2225;
}

html[data-theme="dark"] .btn.danger {
    background: #21191b;
    border-color: #74474d;
}

html[data-theme="dark"] .error-box {
    background: #352023;
    border-color: #6c3d43;
}

html[data-theme="dark"] .credentials-box code,
html[data-theme="dark"] .admin-action-result code,
html[data-theme="dark"] .admin-upload-note code {
    background: rgba(255, 255, 255, .08);
}

html[data-theme="dark"] .admin-status-revision {
    background: #3a301d;
    color: #e4c275;
}

html[data-theme="dark"] .teacher-general-comment,
html[data-theme="dark"] .teacher-item-comment {
    background: #20283d;
    border-color: #39486e;
}

html[data-theme="dark"] .notification-item.unread {
    background: var(--accent-soft);
}

html[data-theme="dark"] input,
html[data-theme="dark"] textarea,
html[data-theme="dark"] select {
    caret-color: var(--ink);
}

html[data-theme="dark"] input::placeholder,
html[data-theme="dark"] textarea::placeholder {
    color: #6f7a8a;
}

html[data-theme="dark"] ::selection {
    background: rgba(131, 148, 255, .35);
}

@media (max-width: 920px) {
    .theme-toggle-btn {
        width: 34px;
        height: 34px;
    }
}

/* ============================================================
   ПРОВЕРКА РАБОТ — АККОРДЕОН + АРХИВ ПРОВЕРЕННЫХ
   ============================================================ */

.admin-workflow-section {
    margin-top: 20px;
}

.admin-workflow-title-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.admin-workflow-title-row h3 {
    margin: 0;
    font-family: var(--serif);
    font-size: 19px;
}

.admin-workflow-count {
    display: inline-grid;
    place-items: center;
    min-width: 25px;
    height: 22px;
    padding: 0 7px;
    border-radius: 999px;
    background: var(--accent-soft);
    color: var(--accent-ink);
    font-size: 11px;
    font-weight: 800;
}

.admin-workflow-empty {
    padding: 18px 20px;
    border: 1px dashed var(--line-strong);
    border-radius: var(--radius);
    color: var(--ink-faint);
    background: var(--paper-2);
    font-size: 13px;
}

.admin-submission-card.admin-submission-accordion {
    padding: 0;
    overflow: hidden;
    transition: border-color .18s ease, box-shadow .18s ease, background-color .22s ease;
}

.admin-submission-card.admin-submission-accordion[open] {
    border-color: var(--line-strong);
    box-shadow: var(--shadow);
}

.admin-submission-summary {
    list-style: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 18px;
    user-select: none;
    transition: background-color .16s ease;
}

.admin-submission-summary::-webkit-details-marker {
    display: none;
}

.admin-submission-summary:hover {
    background: var(--paper-2);
}

.admin-submission-accordion[open] > .admin-submission-summary {
    border-bottom: 1px solid var(--line);
    background: var(--paper-2);
}

.admin-submission-summary-main {
    min-width: 0;
    flex: 1;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}

.admin-submission-person {
    min-width: 0;
}

.admin-submission-person strong {
    display: block;
    font-size: 15px;
    color: var(--ink);
}

.admin-submission-open-hint,
.admin-archive-hint {
    flex: 0 0 auto;
    color: var(--ink-faint);
    font-size: 11px;
    font-weight: 700;
}

.admin-submission-open-hint::after {
    content: "⌄";
    display: inline-block;
    margin-left: 7px;
    font-size: 14px;
    transition: transform .2s ease;
}

.admin-submission-accordion[open] .admin-submission-open-hint::after {
    transform: rotate(180deg);
}

.admin-submission-body {
    padding: 18px 20px 20px;
}

.admin-checked-archive {
    margin-top: 30px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--card);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.admin-checked-archive > summary {
    list-style: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 15px 18px;
    font-size: 14px;
    font-weight: 800;
    color: var(--ink-soft);
    user-select: none;
    transition: background-color .16s ease;
}

.admin-checked-archive > summary::-webkit-details-marker {
    display: none;
}

.admin-checked-archive > summary:hover,
.admin-checked-archive[open] > summary {
    background: var(--paper-2);
}

.admin-checked-archive[open] > summary {
    border-bottom: 1px solid var(--line);
}

.admin-archive-summary-main {
    display: flex;
    align-items: center;
    gap: 9px;
}

.admin-archive-hint::after {
    content: "⌄";
    display: inline-block;
    margin-left: 7px;
    font-size: 14px;
    transition: transform .2s ease;
}

.admin-checked-archive[open] .admin-archive-hint::after {
    transform: rotate(180deg);
}

.admin-checked-archive-body {
    padding: 16px;
}

.archived-submission {
    box-shadow: none !important;
}

@media (max-width: 760px) {
    .admin-submission-summary-main {
        align-items: flex-start;
        flex-direction: column;
        gap: 8px;
    }

    .admin-submission-summary {
        align-items: flex-start;
    }

    .admin-submission-open-hint {
        margin-top: 1px;
    }

    .admin-submission-body {
        padding: 14px;
    }
}