* { box-sizing: border-box; }
:root { color-scheme: light; --ink: #211941; --muted: #5e5674; --purple: #5640b2; --border: #dcd6ee; }
body { margin: 0; background: #f8f7fc; color: var(--ink); font: 16px/1.5 system-ui, sans-serif; }
a { color: inherit; text-decoration: none; }
.top { display: flex; align-items: center; gap: 24px; padding: 13px clamp(16px, 3vw, 42px); background: linear-gradient(110deg,#50428d,#3f365f); color: white; }
.brand { font-size: clamp(18px, 2vw, 25px); white-space: nowrap; }
.top > span { border-left: 1px solid #a99ed0; padding-left: 24px; }
.role { margin-left: auto; background: #ffffff24; padding: 7px 14px; border-radius: 30px; text-align: center; }
.shell { display: grid; grid-template-columns: 220px minmax(0,1fr); min-height: calc(100vh - 65px); }
.side { padding: 20px 12px; background: #f0eef9; }
.side a { display: block; padding: 10px; margin-bottom: 6px; border-radius: 10px; }
.side a:hover, .side .active { background: #e4ddfa; color: #482e9d; }
main { padding: clamp(14px, 2vw, 28px); }
.hero { display: flex; align-items: center; gap: clamp(16px, 4vw, 54px); border-radius: 17px; padding: clamp(18px, 3vw, 34px); background: radial-gradient(ellipse at 100% 100%,#c9bff5,transparent 60%),linear-gradient(120deg,#f1edff,#e2dbfa); }
.hero-icon { flex-shrink: 0; display: grid; place-items: center; width: clamp(70px, 10vw, 132px); aspect-ratio: 1.15; border: 6px solid #7461ba; border-radius: 16px; background: #f9f7ff; color: var(--purple); font-size: clamp(34px, 6vw, 74px); box-shadow: 0 8px #a897db; transform: rotate(-6deg); }
.eyebrow { color: #503594; font-size: .76rem; font-weight: 750; letter-spacing: .12em; }
h1,h2,h3,p { margin: 0 0 8px; }
h1 { font-size: clamp(23px, 2.8vw, 39px); line-height: 1.15; color: #33206e; }
h2 { font-size: 1.35rem; }
h3 { font-size: 1rem; }
.catalog,.workspace { display: grid; gap: 16px; margin-top: 18px; align-items: start; }
.catalog { grid-template-columns: minmax(0, 1fr) minmax(200px, .35fr); }
.workspace { grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); }
.filters { display: flex; gap: 10px; flex-wrap: wrap; margin: 10px 0; }
.filters label { display: flex; align-items: center; gap: 8px; }
select,input,textarea { font: inherit; color: inherit; background: white; padding: 7px 10px; border: 1px solid #aaa0bf; border-radius: 7px; }
.cards { display: grid; grid-template-columns: repeat(auto-fit,minmax(min(100%, 170px),1fr)); gap: 10px; }
.card,.panel { padding: 16px; background: #ffffffaa; border: 1px solid var(--border); border-radius: 13px; }
.tile { display: grid; place-items: center; width: 42px; height: 42px; margin-bottom: 8px; border-radius: 10px; background: #eae3fb; color: var(--purple); font-size: 24px; }
button { cursor: pointer; font: inherit; font-weight: 650; padding: 7px 13px; border: 0; border-radius: 8px; color: white; background: var(--purple); }
button:hover { background: #49349a; }
button:disabled { cursor: default; opacity: .65; }
.help { background: #f1edfb; }
.help ol,.teacher-list { padding-left: 22px; margin: 0; }
li + li { margin-top: 8px; }
.result { background: #e1f5e9; color: #195b34; border-radius: 9px; padding: 14px; margin: 12px 0; }
.hint,.card p { color: var(--muted); font-size: .9rem; }
fieldset { min-width: 0; border: 1px solid var(--border); border-radius: 9px; margin: 8px 0 12px; }
fieldset label { display: block; margin: 6px 0; }
textarea { width: 100%; min-height: 74px; resize: vertical; }
.teacher { max-width: 1080px; margin: auto; }
.teacher input { display: block; width: 100%; }
.teacher-wide { max-width: 1200px; }
.login-panel { max-width: 460px; margin: 20px auto; }
.stack { display: grid; gap: 12px; }
.stack > button, .stack > .toolbar { justify-self: start; }
.stack select { display: block; width: 100%; }
.teacher input[type="checkbox"] { display: inline; width: auto; accent-color: var(--purple); }
.class-choices { display: flex; flex-wrap: wrap; gap: 0 14px; }
.toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-top: 14px; }
.toolbar > form { margin-left: auto; }
.toolbar a { color: var(--purple); text-decoration: underline; }
.toolbar h2 { margin: 0; overflow-wrap: anywhere; }
.alert { padding: 11px 14px; margin: 14px 0; border-radius: 8px; }
.alert.error { background: #fbe8e8; color: #8b2634; }
.alert.success { background: #e1f5e9; color: #195b34; }
.badge { display: inline-block; padding: 3px 9px; border-radius: 20px; background: #eae3fb; color: #48338e; font-size: .8rem; white-space: nowrap; }
.test-row { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 8px; padding: 11px; border-radius: 8px; border: 1px solid var(--border); margin-top: 8px; overflow-wrap: anywhere; }
.test-row:hover, .secondary { background: #eee9fa; color: var(--purple); }
.secondary:hover { background: #dfd6f6; }
.question-preview { padding: 12px; border: 1px solid var(--border); border-radius: 8px; margin-top: 8px; overflow-wrap: anywhere; }
.question-preview .toolbar > form { margin-left: 0; }
.correct-answer { color: #246c3e; font-weight: 650; }
.question-editor { margin-top: 16px; }
.import-template { color: var(--purple); text-decoration: underline; }
.quiz-link { display: inline-block; background: var(--purple); color: white; padding: 7px 13px; border-radius: 8px; font-weight: 650; }
.quiz-link:hover { background: #49349a; }
.telegram-tests { max-width: 720px; margin: auto; }
.telegram-tests .catalog, .telegram-tests .workspace { grid-template-columns: minmax(0, 1fr); }
.telegram-tests .catalog { margin-top: 0; }
.telegram-tests .cards { grid-template-columns: minmax(0, 1fr); }
.telegram-tests .cards:empty { display: none; }
.telegram-tests .card { overflow-wrap: anywhere; }
.telegram-catalog-nav { margin: 8px 0 14px; }
.subject-choices { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0; }
.subject-choices .quiz-link { background: #eee9fa; color: var(--purple); }
.subject-choices .selected-subject { background: var(--purple); color: white; }
.results-scroll { overflow-x: auto; }
.results-table { width: 100%; border-collapse: collapse; font-size: .88rem; }
.results-table th, .results-table td { text-align: left; padding: 8px; border-bottom: 1px solid var(--border); }
.results-table td { white-space: nowrap; }
.results-table thead { background: #eee9fa; }
.results-table a { color: var(--purple); text-decoration: underline; }
.attempt-actions { display: flex; flex-wrap: wrap; gap: 6px; }
.actions-column .attempt-actions { justify-content: flex-end; }
.results-table .actions-column { text-align: right; }
.attempt-actions .attempt-button {
    display: inline-flex;
    align-items: center;
    min-height: 36px;
    padding: 5px 9px;
    border: 1px solid var(--border);
    border-radius: 7px;
    background: #eee9fa;
    color: #48338e;
    font-size: .82rem;
    font-weight: 650;
    text-decoration: none;
    white-space: nowrap;
}
.attempt-actions .attempt-button:hover { background: #dfd6f6; }
.attempt-actions .attempt-button-delete { background: #fbe8e8; border-color: #f0c7cd; color: #8b2634; }
.attempt-actions .attempt-button-delete:hover { background: #f6d5da; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr)); gap: 10px; }
.option-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 8px; margin-bottom: 8px; }
.teacher hr { border: 0; border-top: 1px solid var(--border); margin: 16px 0; }
:focus-visible { outline: 3px solid #8170d3; outline-offset: 3px; }
@media (max-width: 1050px) { .shell { grid-template-columns: 175px minmax(0,1fr); } .catalog { grid-template-columns: 1fr; } }
@media (max-width: 700px) {
    .top { gap: 8px 12px; flex-wrap: wrap; padding: 8px 12px; }
    .top > span, .hero-icon { display: none; }
    .brand { font-size: 17px; }
    .role { display: inline-flex; align-items: center; min-height: 44px; padding: 6px 10px; font-size: .85rem; }
    .shell, .catalog, .workspace, .stack { grid-template-columns: minmax(0, 1fr); }
    .side { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 4px; padding: 8px 12px; }
    .side a { display: flex; align-items: center; min-height: 44px; margin: 0; padding: 6px 8px; font-size: .875rem; }
    main { padding: 12px; }
    .hero, .card, .panel { min-width: 0; padding: 14px; overflow-wrap: anywhere; }
    .hero h1 { font-size: clamp(21px, 5.7vw, 30px); line-height: 1.2; }
    .hero p:last-child { margin-bottom: 0; }
    .filters { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
    .filters label { display: grid; gap: 4px; min-width: 0; }
    .filters button { grid-column: 1 / -1; }
    select, input, textarea { max-width: 100%; font-size: 16px; }
    select, input:not([type="checkbox"], [type="radio"], [type="hidden"]), button, .quiz-link { min-height: 44px; }
    .quiz-link { display: flex; align-items: center; justify-content: center; width: 100%; }
    .stack > button { justify-self: stretch; }
    #quiz fieldset { margin: 0; padding: 8px; }
    #quiz legend { max-width: 100%; padding: 0 4px; }
    #live-quiz fieldset label {
        display: grid;
        grid-template-columns: auto minmax(0, 1fr);
        align-items: center;
        gap: 8px;
        min-height: 44px;
        margin: 4px 0;
        padding: 6px 8px;
        border: 1px solid var(--border);
        border-radius: 7px;
    }
    #live-quiz fieldset label:has(:checked) { background: #eee9fa; border-color: var(--purple); }
    #live-quiz input[type="checkbox"], #live-quiz input[type="radio"] { width: 18px; height: 18px; margin: 0; accent-color: var(--purple); }
    .results-scroll { max-width: 100%; }
    .results-table { min-width: 850px; }
    .attempt-actions .attempt-button { min-height: 44px; }
}