:root {
    --ui-font: "Be Vietnam Pro", "Segoe UI", sans-serif;
    --ui-display-font: "Segoe UI", Arial, sans-serif;
    --ui-code-font: ui-monospace, Menlo, "Cascadia Mono", Consolas, monospace;
    --ui-navy-950: #061427;
    --ui-navy-900: #0a2344;
    --ui-blue-700: #1d4ed8;
    --ui-blue-600: #2563eb;
    --ui-blue-50: #eff6ff;
    --ui-orange-500: #f97316;
    --ui-green-600: #16a34a;
    --ui-amber-600: #d97706;
    --ui-red-600: #dc2626;
    --ui-slate-900: #0f172a;
    --ui-slate-700: #334155;
    --ui-slate-500: #64748b;
    --ui-slate-200: #e2e8f0;
    --ui-slate-100: #f1f5f9;
    --ui-surface: #fff;
    --ui-radius-sm: 10px;
    --ui-radius: 14px;
    --ui-radius-lg: 18px;
    --ui-shadow: 0 18px 45px rgba(6, 20, 39, .14);
    --ui-sidebar-width: 256px;
    --ui-sidebar-profile-height: 72px;
    --ui-sidebar-nav-padding: 16px;
}

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

body,
button,
input,
select,
textarea {
    font-family: var(--ui-font);
}

:where(a, button, input, select, textarea, summary):focus-visible {
    outline: 3px solid rgba(56, 189, 248, .72);
    outline-offset: 2px;
}

.ui-global-header,
.ui-global-header a,
.ui-global-header button,
.ui-global-header summary {
    font-family: var(--ui-font) !important;
}

.ui-global-header .brand {
    font-family: var(--ui-display-font) !important;
}

.ui-global-header .account-dropdown strong {
    padding: 8px 10px 2px;
    color: var(--ui-slate-900);
    font-size: 14px;
}

.ui-account-role {
    padding: 0 10px 8px;
    color: var(--ui-slate-500);
    font-size: 12px;
    border-bottom: 1px solid var(--ui-slate-100);
    margin-bottom: 4px;
}

.ui-global-header .ui-danger-link {
    color: var(--ui-red-600);
}

.ui-password-warning-icon {
    position: absolute;
    top: -4px;
    right: -4px;
    z-index: 2;
    display: grid;
    width: 19px;
    height: 19px;
    place-items: center;
    border: 2px solid #fff;
    border-radius: 999px;
    background: #f59e0b;
    color: #fff;
    font-size: 12px;
    font-weight: 900;
    line-height: 1;
    pointer-events: none;
}

.ui-global-header .account-dropdown .ui-password-warning-link {
    color: #b45309;
    background: #fffbeb;
}

.ui-page-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 24px;
}

.ui-sidebar-link {
    min-height: 46px;
    display: flex;
    align-items: center;
    gap: 11px;
    padding: 10px 12px;
    border-radius: 12px;
    color: #dbeafe;
    font: 750 14px/1.25 var(--ui-font);
    text-decoration: none;
    transition: background-color .16s ease, color .16s ease, transform .16s ease;
}

.ui-sidebar-link svg {
    width: 19px;
    height: 19px;
    flex: 0 0 19px;
    fill: currentColor;
}

.ui-sidebar-link:hover {
    color: #fff;
    background: rgba(255, 255, 255, .1);
    transform: translateX(2px);
}

.ui-sidebar-link.active {
    color: #fff;
    background: var(--ui-blue-600);
    box-shadow: 0 10px 24px rgba(37, 99, 235, .22);
}

.ui-sidebar-group {
    display: block;
}

.ui-sidebar-group-toggle {
    cursor: pointer;
    list-style: none;
    user-select: none;
}

.ui-sidebar-group-toggle::-webkit-details-marker {
    display: none;
}

.ui-sidebar-group-toggle > span {
    flex: 1 1 auto;
    min-width: 0;
}

.ui-sidebar-group-toggle .ui-sidebar-group-caret {
    width: 18px;
    height: 18px;
    flex: 0 0 18px;
    opacity: .7;
    transition: transform .18s ease;
}

.ui-sidebar-group[open] > .ui-sidebar-group-toggle .ui-sidebar-group-caret {
    transform: rotate(180deg);
}

.ui-sidebar-group.is-current > .ui-sidebar-group-toggle {
    color: #fff;
}

.ui-sidebar-group-items {
    display: flex;
    flex-direction: column;
    gap: 2px;
    margin: 2px 0 6px 21px;
    padding-left: 10px;
    border-left: 1px solid rgba(255, 255, 255, .14);
}

.ui-sidebar-link.ui-sidebar-sublink {
    min-height: 38px;
    padding: 8px 12px;
    font-size: 13.5px;
}

.ui-page-header h1 {
    margin: 0;
    color: inherit;
    font-size: clamp(1.7rem, 3vw, 2.25rem);
    line-height: 1.08;
}

.ui-page-header p {
    margin: 7px 0 0;
    color: inherit;
    opacity: .78;
}

.site-standard-background .ui-page-header h1,
.site-standard-background .ui-page-header p {
    color: #fff !important;
    text-shadow: 0 2px 14px rgba(0, 0, 0, .28);
}

.ui-page-actions,
.ui-row-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
}

.ui-btn {
    min-height: 42px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 9px 14px;
    border: 1px solid transparent;
    border-radius: var(--ui-radius-sm);
    font: 700 14px/1.2 var(--ui-font);
    text-decoration: none;
    cursor: pointer;
    transition: transform .16s ease, box-shadow .16s ease, background-color .16s ease;
}

.ui-btn:hover {
    transform: translateY(-1px);
}

.ui-btn-primary {
    color: #fff;
    background: var(--ui-blue-600);
    box-shadow: 0 10px 24px rgba(37, 99, 235, .22);
}

.ui-btn-secondary {
    color: var(--ui-blue-700);
    background: var(--ui-blue-50);
    border-color: #bfdbfe;
}

.ui-btn-neutral {
    color: var(--ui-slate-700);
    background: #fff;
    border-color: var(--ui-slate-200);
}

.ui-btn-danger {
    color: var(--ui-red-600);
    background: #fff1f2;
    border-color: #fecdd3;
}

.ui-action-menu {
    position: relative;
}

.ui-action-menu > summary {
    width: 42px;
    height: 42px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--ui-slate-200);
    border-radius: var(--ui-radius-sm);
    background: #fff;
    color: var(--ui-slate-700);
    cursor: pointer;
    list-style: none;
    font-size: 20px;
    font-weight: 800;
}

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

.ui-action-popover {
    position: absolute;
    right: 0;
    top: calc(100% + 7px);
    z-index: 80;
    min-width: 190px;
    display: grid;
    gap: 3px;
    padding: 7px;
    border: 1px solid var(--ui-slate-200);
    border-radius: var(--ui-radius-sm);
    background: #fff;
    box-shadow: var(--ui-shadow);
}

.ui-action-menu.ui-action-menu-up .ui-action-popover {
    top: auto;
    bottom: calc(100% + 7px);
}

.ui-action-popover > :is(a, button),
.ui-action-popover > form > button {
    width: 100%;
    min-height: 40px;
    display: flex;
    align-items: center;
    padding: 9px 11px;
    border: 0;
    border-radius: 8px;
    background: transparent;
    color: var(--ui-slate-700);
    font: 650 13px/1.25 var(--ui-font);
    text-align: left;
    text-decoration: none;
    cursor: pointer;
}

.ui-action-popover > form {
    margin: 0;
}

.ui-action-popover > :is(a, button):hover,
.ui-action-popover > form > button:hover {
    background: var(--ui-slate-100);
}

.ui-action-popover .is-danger {
    color: var(--ui-red-600);
    border-top: 1px solid var(--ui-slate-100);
}

.ui-responsive-table-wrap {
    overflow: visible;
}

[data-ui-action-card] {
    overflow: visible !important;
}

[data-ui-action-reserve] {
    transition: padding-bottom 160ms ease;
}

.ui-responsive-table {
    width: 100%;
}

.ui-responsive-table td[data-label]::before {
    display: none;
}

.ui-status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    min-height: 28px;
    padding: 5px 9px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 800;
}

.ui-status::before {
    content: "";
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: currentColor;
}

.ui-status-success { color: #15803d; background: #dcfce7; }
.ui-status-warning { color: #b45309; background: #fef3c7; }
.ui-status-muted { color: #475569; background: #e2e8f0; }

.ui-game-exit {
    position: fixed;
    top: 14px;
    left: 14px;
    z-index: 10000;
    min-height: 42px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 13px;
    border: 1px solid rgba(255, 255, 255, .34);
    border-radius: 999px;
    color: #fff;
    background: rgba(6, 20, 39, .78);
    box-shadow: 0 10px 30px rgba(0, 0, 0, .2);
    backdrop-filter: blur(12px);
    text-decoration: none;
    font: 750 13px/1 var(--ui-font);
}

.python-layout,
.python-layout button,
.python-layout input,
.python-layout select,
.python-layout textarea {
    font-family: var(--ui-font);
}

.python-layout .hero > .eyebrow,
.python-layout .hero h1,
.python-layout .section-head h1,
.python-layout .section-head h2,
.python-layout .side-panel h2,
.python-layout .side-panel h3 {
    font-family: var(--ui-display-font);
}

.python-layout .hero > .eyebrow {
    margin: 0;
}

.python-layout .side-panel h2 {
    display: flex;
    align-items: center;
    gap: 9px;
    margin: 0;
    font-family: var(--ui-font);
    font-size: 18px;
    line-height: 1.3;
}

.python-admin-layout {
    grid-template-columns: var(--ui-sidebar-width) minmax(0, 1fr);
}

.python-admin-layout .python-content {
    min-width: 0;
}

.python-layout .python-sidebar a.active {
    color: #fff !important;
    background: var(--ui-blue-600) !important;
    box-shadow: 0 10px 24px rgba(37, 99, 235, .22);
}

.python-admin-layout > .python-content > .section-head > div > h1,
.python-admin-layout > .python-content > .section-head > div > p {
    color: #fff;
    text-shadow: 0 2px 14px rgba(0, 0, 0, .28);
}

.code-input,
.python-layout pre,
.python-layout code {
    font-family: var(--ui-code-font) !important;
}

@media (max-width: 767px) {
    .site-standard-background .ui-page-header h1,
    .site-standard-background .ui-page-header p {
        color: #fff !important;
        text-shadow: 0 2px 14px rgba(0, 0, 0, .28);
    }

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

    .python-admin-layout .python-sidebar {
        width: 100%;
        display: grid;
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 4px;
    }

    .python-admin-layout .python-sidebar a {
        min-width: 0;
        justify-content: center;
        padding-inline: 8px;
    }

    .python-admin-layout .python-content {
        width: 100%;
    }

    .ui-page-header {
        align-items: stretch;
        flex-direction: column;
        gap: 14px;
    }

    .ui-page-actions,
    .ui-page-actions .ui-btn {
        width: 100%;
    }

    .ui-page-actions {
        flex-direction: column;
    }

    .ui-responsive-table-wrap {
        overflow: visible !important;
    }

    .ui-responsive-table,
    .ui-responsive-table tbody,
    .ui-responsive-table tr,
    .ui-responsive-table td {
        display: block;
        width: 100%;
    }

    .ui-responsive-table thead {
        display: none;
    }

    .ui-responsive-table tbody {
        display: grid;
        gap: 14px;
    }

    .ui-responsive-table tr {
        overflow: visible;
        padding: 14px;
        border: 1px solid var(--ui-slate-200);
        border-radius: var(--ui-radius);
        background: #fff;
        box-shadow: 0 10px 28px rgba(15, 23, 42, .08);
    }

    .ui-responsive-table td {
        display: grid;
        grid-template-columns: minmax(92px, 36%) 1fr;
        gap: 10px;
        align-items: center;
        padding: 9px 0 !important;
        border: 0 !important;
        text-align: left !important;
        white-space: normal !important;
    }

    .ui-responsive-table td[data-label]::before {
        content: attr(data-label);
        display: block;
        color: var(--ui-slate-500);
        font-size: 11px;
        font-weight: 800;
        letter-spacing: .04em;
        text-transform: uppercase;
    }

    .ui-responsive-table td.ui-table-primary {
        display: block;
        padding-top: 0 !important;
        padding-bottom: 12px !important;
        border-bottom: 1px solid var(--ui-slate-100) !important;
    }

    .ui-responsive-table td.ui-table-primary::before,
    .ui-responsive-table td.ui-table-actions::before {
        display: none;
    }

    .ui-responsive-table td.ui-table-actions {
        display: block;
        padding-bottom: 0 !important;
    }

    .ui-responsive-table .ui-row-actions {
        justify-content: stretch;
    }

    .ui-responsive-table .ui-row-actions > .ui-btn {
        flex: 1;
    }

    .ui-action-popover {
        position: fixed;
        left: 12px;
        right: 12px;
        top: auto;
        bottom: 12px;
        min-width: 0;
        padding: 10px;
        border-radius: var(--ui-radius-lg);
    }

    .ui-action-popover > :is(a, button),
    .ui-action-popover > form > button {
        min-height: 48px;
        font-size: 15px;
    }

    .ui-game-exit {
        top: 10px;
        left: 10px;
    }
}

@media (max-width: 430px) {
    .ui-global-header .nav > a,
    .ui-global-header .nav > button,
    .ui-global-header .nav-dropdown > button {
        color: #dbeafe !important;
        justify-content: flex-start;
        font-family: var(--ui-font) !important;
    }

    .ui-global-header .nav > a:hover,
    .ui-global-header .nav > a:focus-visible,
    .ui-global-header .nav > a.active,
    .ui-global-header .nav-dropdown > button:hover,
    .ui-global-header .nav-dropdown > button:focus-visible {
        color: #fff !important;
        background: rgba(116, 231, 255, .1) !important;
        text-shadow: 0 0 18px rgba(99, 230, 255, .28);
        transform: none;
    }

    .ui-global-header .nav > a::after,
    .ui-global-header .nav-dropdown > button::before {
        display: none;
    }
}

#sidebar > div:first-child:has(+ div) {
    display: none !important;
}

.ui-sidebar-toggle {
    display: none;
}

@media (min-width: 768px) {
    #sidebar {
        width: var(--ui-sidebar-width) !important;
        min-width: var(--ui-sidebar-width) !important;
        max-width: var(--ui-sidebar-width) !important;
        flex: 0 0 var(--ui-sidebar-width) !important;
        opacity: 1;
        transform: translateX(0) !important;
        transition: width .24s ease, min-width .24s ease, max-width .24s ease, flex-basis .24s ease, opacity .16s ease, transform .24s ease;
    }

    #sidebar > div:has(+ nav) {
        box-sizing: border-box;
        display: flex !important;
        align-items: center !important;
        justify-content: space-between !important;
        gap: 12px !important;
        height: var(--ui-sidebar-profile-height) !important;
        min-height: var(--ui-sidebar-profile-height) !important;
        padding: 16px 62px 16px 24px !important;
        flex: 0 0 var(--ui-sidebar-profile-height) !important;
        border-bottom: 1px solid rgba(116, 231, 255, .2) !important;
        color: #fff !important;
    }

    #sidebar > div:has(+ nav) > div:first-child:has(> div) {
        display: flex !important;
        min-width: 0;
        align-items: center !important;
        gap: 12px !important;
    }

    #sidebar > div:has(+ nav) > div:first-child:has(> div) > :not([hidden]) ~ :not([hidden]) {
        margin-right: 0 !important;
        margin-left: 0 !important;
    }

    #sidebar > div:has(+ nav) > div:first-child:has(> div) > div:first-child {
        display: grid !important;
        width: 40px !important;
        height: 40px !important;
        min-width: 40px !important;
        flex: 0 0 40px !important;
        place-items: center !important;
        border-radius: 50% !important;
        color: #fff !important;
        background: var(--ui-blue-600) !important;
        font: 800 15px/1 var(--ui-font) !important;
    }

    #sidebar > div:has(+ nav) > div:first-child:has(> div) > div:nth-child(2) {
        min-width: 0;
    }

    #sidebar > div:has(+ nav) > div:first-child:has(> div) > div:nth-child(2) > :first-child,
    #sidebar > div:has(+ nav) > div:first-child:has(> div) > div:nth-child(2) > :nth-child(2) {
        display: block;
        max-width: 150px;
        margin: 0 !important;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        font-family: var(--ui-font) !important;
        line-height: 1.2 !important;
    }

    #sidebar > div:has(+ nav) > div:first-child:has(> div) > div:nth-child(2) > :first-child {
        color: #fff !important;
        font-size: 14px !important;
        font-weight: 800 !important;
    }

    #sidebar > div:has(+ nav) > div:first-child:has(> div) > div:nth-child(2) > :nth-child(2) {
        margin-top: 3px !important;
        color: #93c5fd !important;
        font-size: 12px !important;
        font-weight: 500 !important;
    }

    #sidebar > nav {
        box-sizing: border-box;
        padding: var(--ui-sidebar-nav-padding) !important;
    }

    html.ui-sidebar-collapsed #sidebar {
        width: 0 !important;
        min-width: 0 !important;
        max-width: 0 !important;
        flex-basis: 0 !important;
        overflow: hidden !important;
        border-width: 0 !important;
        opacity: 0;
        pointer-events: none;
        transform: translateX(-100%) !important;
    }

    html.ui-has-sidebar .ui-sidebar-toggle {
        position: fixed;
        top: 86px;
        left: calc(var(--ui-sidebar-width) - 50px);
        z-index: 9985;
        display: inline-flex;
        width: 38px;
        height: 38px;
        align-items: center;
        justify-content: center;
        flex-direction: column;
        gap: 4px;
        border: 1px solid rgba(147, 197, 253, .3);
        border-radius: 11px;
        padding: 0;
        color: #dbeafe;
        cursor: pointer;
        background: rgba(255, 255, 255, .07);
        box-shadow: 0 8px 22px rgba(2, 12, 27, .15);
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
        transition: left .24s ease, color .16s ease, background-color .16s ease, box-shadow .16s ease, transform .16s ease;
    }

    .ui-sidebar-toggle > span:not(.sr-only) {
        display: block;
        width: 17px;
        height: 2px;
        border-radius: 99px;
        background: currentColor;
        transition: width .16s ease, transform .16s ease;
    }

    .ui-sidebar-toggle:hover,
    .ui-sidebar-toggle:focus-visible {
        color: #fff;
        background: rgba(37, 99, 235, .92);
        box-shadow: 0 10px 26px rgba(37, 99, 235, .26);
        transform: translateY(-1px);
    }

    html.ui-sidebar-collapsed .ui-sidebar-toggle {
        left: 12px;
        color: #fff;
        border-color: rgba(147, 197, 253, .48);
        background: var(--ui-blue-600);
        box-shadow: 0 12px 30px rgba(2, 12, 27, .28);
    }
}

@media (min-width: 851px) {
    .python-layout,
    .python-subpage-layout,
    .python-admin-layout {
        grid-template-columns: var(--ui-sidebar-width) minmax(0, 1fr) !important;
        transition: grid-template-columns .24s ease;
    }

    .python-layout:not(.python-subpage-layout) {
        grid-template-columns: var(--ui-sidebar-width) minmax(0, 1fr) 320px !important;
    }

    .python-sidebar {
        box-sizing: border-box;
        top: 69px !important;
        width: var(--ui-sidebar-width) !important;
        min-width: var(--ui-sidebar-width) !important;
        max-width: var(--ui-sidebar-width) !important;
        min-height: calc(100vh - 69px) !important;
        height: calc(100vh - 69px) !important;
        padding: 0 16px 16px !important;
        gap: 8px !important;
        opacity: 1;
        transform: translateX(0) !important;
        transition: width .24s ease, min-width .24s ease, max-width .24s ease, opacity .16s ease, transform .24s ease;
    }

    .python-exam-management {
        width: calc(100% - var(--ui-sidebar-width) - 48px) !important;
        margin: 30px 24px 60px calc(var(--ui-sidebar-width) + 24px) !important;
    }

    .python-sidebar-profile {
        display: flex;
        align-items: center;
        gap: 12px;
        height: var(--ui-sidebar-profile-height);
        min-height: var(--ui-sidebar-profile-height);
        margin: 0 -16px 8px;
        padding: 16px 62px 16px 24px;
        border-bottom: 1px solid rgba(116, 231, 255, .2);
        color: #fff;
    }

    .python-sidebar-profile-avatar {
        display: grid;
        width: 40px;
        height: 40px;
        flex: 0 0 40px;
        place-items: center;
        border-radius: 50%;
        color: #fff;
        font: 800 15px/1 var(--ui-font);
        background: var(--ui-blue-600);
    }

    .python-sidebar-profile strong,
    .python-sidebar-profile small {
        display: block;
        max-width: 150px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        font-family: var(--ui-font);
        line-height: 1.2;
    }

    .python-sidebar-profile > span:last-child {
        min-width: 0;
    }

    .python-sidebar-profile strong {
        font-size: 14px;
        font-weight: 800;
    }

    .python-sidebar-profile small {
        margin-top: 3px;
        color: #93c5fd;
        font-size: 12px;
        font-weight: 500;
    }

    html.ui-sidebar-collapsed .python-layout,
    html.ui-sidebar-collapsed .python-subpage-layout,
    html.ui-sidebar-collapsed .python-admin-layout {
        grid-template-columns: 0 minmax(0, 1fr) !important;
    }

    html.ui-sidebar-collapsed .python-layout:not(.python-subpage-layout) {
        grid-template-columns: 0 minmax(0, 1fr) 320px !important;
    }

    html.ui-sidebar-collapsed .python-sidebar {
        width: 0 !important;
        min-width: 0 !important;
        max-width: 0 !important;
        overflow: hidden !important;
        border-width: 0 !important;
        opacity: 0;
        pointer-events: none;
        transform: translateX(-100%) !important;
        transition: width .24s ease, min-width .24s ease, max-width .24s ease, opacity .16s ease, transform .24s ease;
    }

    html.ui-sidebar-collapsed .python-exam-management {
        width: calc(100% - 48px) !important;
        margin-left: 24px !important;
    }
}

@media (min-width: 768px) and (max-width: 850px) {
    html.ui-has-python-sidebar .ui-sidebar-toggle {
        display: none;
    }
}

@media (max-width: 850px) {
    .python-sidebar-profile {
        display: none;
    }
}

@media (min-width: 851px) {
    .python-layout.python-admin-layout:not(.python-subpage-layout) {
        grid-template-columns: var(--ui-sidebar-width) minmax(0, 1fr) !important;
    }

    html.ui-sidebar-collapsed .python-layout.python-admin-layout:not(.python-subpage-layout) {
        grid-template-columns: 0 minmax(0, 1fr) !important;
    }
}