/* ===== Токены ===== */
:root {
  --bg: #f4f5fb;
  --surface: #ffffff;
  --surface-2: #f8f9fd;
  --text: #1a1d2e;
  --text-muted: #5f6680;
  --border: #e3e6f0;
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-soft: #eef0ff;
  --focus: rgba(79, 70, 229, 0.35);

  --right: #15803d;
  --right-bg: #ecfdf3;
  --right-border: #86efac;
  --warn: #b45309;
  --warn-bg: #fffbeb;
  --warn-border: #fcd34d;
  --wrong: #c62828;
  --wrong-bg: #fef2f2;
  --wrong-border: #fca5a5;

  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 1px 2px rgba(20, 24, 60, 0.04), 0 8px 24px rgba(20, 24, 60, 0.06);
  --font: "Inter", "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* Тёмная тема: по настройке системы или явно через data-theme="dark" */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #0f1221;
    --surface: #181c30;
    --surface-2: #1e233b;
    --text: #e8eaf6;
    --text-muted: #9aa1c0;
    --border: #2b3150;
    --primary: #7c83ff;
    --primary-hover: #939aff;
    --primary-soft: #252b52;
    --focus: rgba(124, 131, 255, 0.45);

    --right: #4ade80;
    --right-bg: #11291d;
    --right-border: #1f6b41;
    --warn: #fbbf24;
    --warn-bg: #2b2310;
    --warn-border: #7a5a12;
    --wrong: #f87171;
    --wrong-bg: #2e1618;
    --wrong-border: #7f2a2f;

    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.25);
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0f1221;
  --surface: #181c30;
  --surface-2: #1e233b;
  --text: #e8eaf6;
  --text-muted: #9aa1c0;
  --border: #2b3150;
  --primary: #7c83ff;
  --primary-hover: #939aff;
  --primary-soft: #252b52;
  --focus: rgba(124, 131, 255, 0.45);

  --right: #4ade80;
  --right-bg: #11291d;
  --right-border: #1f6b41;
  --warn: #fbbf24;
  --warn-bg: #2b2310;
  --warn-border: #7a5a12;
  --wrong: #f87171;
  --wrong-bg: #2e1618;
  --wrong-border: #7f2a2f;

  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.25);
}

/* ===== База ===== */
*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.55;
}

h1, h2, h3 { line-height: 1.25; margin: 0; }
p { margin: 0; }
button, input { font: inherit; color: inherit; }
[hidden] { display: none !important; }

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

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

.container {
  flex: 1;
  width: 100%;
  max-width: 760px;
  margin: 0 auto;
  padding: 24px 16px 48px;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
}
.panel + .panel { margin-top: 16px; }

/* ===== Шапка ===== */
.topbar {
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 10;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  backdrop-filter: saturate(160%) blur(10px);
  -webkit-backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--border);
}
.topbar__inner {
  max-width: 760px;
  margin: 0 auto;
  padding: 10px 16px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 4px;
  margin: -4px;
  background: none;
  border: 0;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-align: left;
}
.brand__logo {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 11px;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: #fff;
  font-weight: 800;
  font-size: 15px;
  letter-spacing: 0.02em;
}
.brand__text { display: flex; flex-direction: column; }
.brand__title { font-weight: 700; font-size: 16px; }
.brand__subtitle { font-size: 13px; color: var(--text-muted); }

.footer {
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
  padding: 16px;
}

/* ===== Кнопки ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 20px;
  border-radius: 12px;
  border: 1px solid transparent;
  font-weight: 600;
  cursor: pointer;
  transition: background-color .15s, transform .1s, box-shadow .15s, opacity .15s;
  user-select: none;
}
.btn:active:not(:disabled) { transform: translateY(1px); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn--lg { min-height: 52px; padding: 12px 26px; font-size: 17px; }
.btn--block { width: 100%; }
.btn--primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 6px 16px -6px var(--primary);
}
.btn--primary:hover:not(:disabled) { background: var(--primary-hover); }
.btn--ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}
.btn--ghost:hover { background: var(--surface-2); }
.btn--sm { min-height: 36px; padding: 6px 14px; font-size: 14px; }

/* ===== Стартовый экран ===== */
.hero { margin: 8px 0 20px; }
.hero h1 { font-size: clamp(24px, 5vw, 32px); font-weight: 800; letter-spacing: -0.01em; }
.hero__lead { margin-top: 10px; color: var(--text-muted); font-size: 17px; }

.field { border: 0; padding: 0; margin: 0 0 22px; min-width: 0; }
.field__label {
  padding: 0;
  margin-bottom: 10px;
  font-weight: 700;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--text-muted);
}

.topic-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px;
}
.topic-option { position: relative; display: block; cursor: pointer; }
.topic-option input { position: absolute; opacity: 0; pointer-events: none; }
.topic-option__body {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas: "dot title" "dot count";
  column-gap: 10px;
  align-items: center;
  height: 100%;
  padding: 12px 14px;
  border: 2px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  transition: border-color .15s, background-color .15s;
}
.topic-option__dot {
  grid-area: dot;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--topic-color, conic-gradient(#6366f1, #0ea5e9, #10b981, #f59e0b, #ef4444, #6366f1));
}
.topic-option__title { grid-area: title; font-weight: 600; line-height: 1.3; }
.topic-option__count { grid-area: count; font-size: 13px; color: var(--text-muted); }
.topic-option:hover .topic-option__body { border-color: color-mix(in srgb, var(--primary) 40%, var(--border)); }
.topic-option input:checked + .topic-option__body {
  border-color: var(--primary);
  background: var(--primary-soft);
}
.topic-option input:focus-visible + .topic-option__body { outline: 3px solid var(--focus); outline-offset: 2px; }
.topic-option input:disabled + .topic-option__body { opacity: .5; cursor: not-allowed; }
.topic-grid--compact { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 8px; }
.topic-grid--compact .topic-option__body { padding: 10px 12px; }

.segmented {
  display: inline-flex;
  padding: 4px;
  gap: 4px;
  border-radius: 12px;
  background: var(--surface-2);
  border: 1px solid var(--border);
}
.segmented__item { position: relative; cursor: pointer; }
.segmented__item input { position: absolute; opacity: 0; pointer-events: none; }
.segmented__item span {
  display: block;
  min-width: 64px;
  padding: 8px 16px;
  text-align: center;
  border-radius: 9px;
  font-weight: 600;
  color: var(--text-muted);
  transition: background-color .15s, color .15s;
}
.segmented__item input:checked + span {
  background: var(--surface);
  color: var(--primary);
  box-shadow: 0 1px 4px rgba(20, 24, 60, .12);
}
.segmented__item input:focus-visible + span { outline: 3px solid var(--focus); }

.rules summary { cursor: pointer; font-weight: 600; }
.rules ul { margin: 12px 0; padding-left: 20px; }
.rules li { margin: 4px 0; }
.rules p { font-size: 14px; }

/* ===== Прогресс ===== */
.progress { margin-bottom: 16px; }
.progress__row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}
.progress__label { font-weight: 700; }
.score-pill {
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 700;
  font-size: 14px;
  white-space: nowrap;
}
.progress__track {
  height: 8px;
  border-radius: 999px;
  background: var(--border);
  overflow: hidden;
}
/* Навигация по заданиям */
.task-nav { margin-top: 12px; }
.task-nav__list {
  position: relative;
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 4px 2px 6px;
  list-style: none;
  overflow-x: auto;
  scroll-behavior: smooth;
  scrollbar-width: thin;
}
.task-nav__item {
  display: grid;
  place-items: center;
  min-width: 36px;
  height: 36px;
  padding: 0 6px;
  border-radius: 10px;
  border: 2px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  transition: background-color .15s, border-color .15s, box-shadow .15s;
}
.task-nav__item.is-done.points--full { color: var(--right); background: var(--right-bg); border-color: var(--right-border); }
.task-nav__item.is-done.points--partial { color: var(--warn); background: var(--warn-bg); border-color: var(--warn-border); }
.task-nav__item.is-done.points--none { color: var(--wrong); background: var(--wrong-bg); border-color: var(--wrong-border); }
.task-nav__item.is-current { color: var(--primary); border-color: var(--primary); background: var(--primary-soft); }
.task-nav__item.is-locked { border-style: dashed; background: transparent; opacity: .6; cursor: not-allowed; }
.task-nav__item.is-viewed { box-shadow: 0 0 0 2px var(--surface), 0 0 0 4px var(--text); }
.task-nav__item.is-current.is-viewed { background: var(--primary); border-color: var(--primary); color: #fff; box-shadow: none; }
.task-nav__item:not(:disabled):hover { border-color: var(--primary); }

.progress__fill {
  height: 100%;
  width: 0;
  border-radius: inherit;
  background: linear-gradient(90deg, #6366f1, #8b5cf6);
  transition: width .35s ease;
}

/* ===== Задание ===== */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  color: var(--topic-color, var(--primary));
  background: color-mix(in srgb, var(--topic-color, var(--primary)) 13%, transparent);
}
.chip::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
}
.chip--sm { font-size: 12px; padding: 2px 8px; }

.task__meta { margin-bottom: 12px; }
.task__question { font-size: clamp(19px, 3.6vw, 22px); font-weight: 700; }
.task__hint { margin-top: 6px; color: var(--text-muted); font-size: 15px; }

.statements {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.statement {
  border: 2px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
  transition: border-color .15s, background-color .15s;
  overflow: hidden;
}
.statement__btn {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: start;
  gap: 12px;
  width: 100%;
  padding: 14px;
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  line-height: 1.5;
}
.statement__btn:disabled { cursor: default; }
.statement__btn:focus-visible { outline-offset: -3px; border-radius: 12px; }
.statement__num {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 9px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  font-weight: 700;
  font-size: 15px;
}
.statement__text { padding-top: 3px; }
.statement__check {
  position: relative;
  width: 24px;
  height: 24px;
  margin-top: 3px;
  border-radius: 7px;
  border: 2px solid var(--border);
  background: var(--surface);
  transition: background-color .15s, border-color .15s;
}
.statement__check::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 2px;
  width: 6px;
  height: 12px;
  border: solid #fff;
  border-width: 0 3px 3px 0;
  transform: rotate(45deg) scale(0);
  transition: transform .15s;
}

.statements:not(.is-answered) .statement:hover { border-color: color-mix(in srgb, var(--primary) 40%, var(--border)); }
.statement.is-selected { border-color: var(--primary); background: var(--primary-soft); }
.statement.is-selected .statement__num { background: var(--primary); border-color: var(--primary); color: #fff; }
.statement.is-selected .statement__check { background: var(--primary); border-color: var(--primary); }
.statement.is-selected .statement__check::after { transform: rotate(45deg) scale(1); }

/* После ответа */
.statement__details { padding: 0 14px 14px 56px; }
.statement__tag {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
}
.statement__explanation { margin-top: 6px; font-size: 15px; color: var(--text-muted); }
.statement__mistake {
  margin-top: 6px;
  padding: 6px 10px;
  border-left: 3px solid var(--warn-border);
  border-radius: 0 8px 8px 0;
  background: var(--warn-bg);
  font-size: 14px;
}
.statement__mistake strong { color: var(--warn); }

/* Пояснения к заданию после ответа: общий признак ряда и источник */
.task-notes { margin-top: 16px; display: grid; gap: 8px; }
.task-notes__feature {
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-2);
}
.task-notes__feature .statement__tag { color: var(--primary); background: var(--primary-soft); }
.task-notes__text { margin-top: 6px; }
.task-notes__source { font-size: 13px; color: var(--text-muted); overflow-wrap: anywhere; }

/*
 * Иерархия разбора: ошибка заметнее всего (сплошная яркая рамка, заливка, белый ярлык),
 * пропуск — пунктирная янтарная рамка, верно выбранное — спокойная карточка с зелёной
 * полосой слева, невыбранное неверное — приглушено. Статус дублируется текстом и значком.
 */
.statement__icon {
  display: inline-grid;
  place-items: center;
  width: 18px;
  height: 18px;
  margin-right: 6px;
  border: 1.5px solid currentColor;
  border-radius: 50%;
  font-size: 11px;
  line-height: 1;
  vertical-align: -3px;
}

.is-answered .statement__explanation { color: var(--text); opacity: .88; }

.statement.status-hit {
  border-color: color-mix(in srgb, var(--right) 30%, var(--border));
  box-shadow: inset 4px 0 0 var(--right);
}
.statement.status-hit .statement__tag { color: var(--right); background: color-mix(in srgb, var(--right) 10%, transparent); }
.statement.status-hit .statement__num { color: var(--right); border-color: color-mix(in srgb, var(--right) 50%, var(--border)); }
.statement.status-hit .statement__check { background: var(--right); border-color: var(--right); }
.statement.status-hit .statement__check::after { transform: rotate(45deg) scale(1); }

.statement.status-missed { border-color: var(--warn); border-style: dashed; background: var(--warn-bg); }
.statement.status-missed .statement__tag { color: var(--warn); background: color-mix(in srgb, var(--warn) 16%, transparent); }
.statement.status-missed .statement__num { background: var(--warn); border-color: var(--warn); color: var(--warn-bg); }
.statement.status-missed .statement__check { border-color: var(--warn); border-style: dashed; }

.statement.status-wrong {
  border-color: var(--wrong);
  background: var(--wrong-bg);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--wrong) 18%, transparent);
}
.statement.status-wrong .statement__tag { color: var(--wrong-bg); background: var(--wrong); }
.statement.status-wrong .statement__text { font-weight: 600; }
.statement.status-wrong .statement__num,
.statement.status-wrong .statement__check { background: var(--wrong); border-color: var(--wrong); color: #fff; }
/* крестик вместо галочки */
.statement.status-wrong .statement__check::before,
.statement.status-wrong .statement__check::after {
  content: "";
  position: absolute;
  left: 8px; top: 3px; width: 3px; height: 14px;
  border: 0;
  border-radius: 2px;
  background: #fff;
  transform: rotate(45deg);
}
.statement.status-wrong .statement__check::before { transform: rotate(-45deg); }

.statement.status-skip .statement__tag { color: var(--text-muted); background: var(--surface-2); }
.statement.status-skip .statement__text { color: var(--text-muted); }

/* ===== Задание на соответствие ===== */
.task__instruction { margin-top: 16px; font-weight: 600; }
.matching { margin-top: 20px; }
.matching__col-title {
  margin: 0 0 8px;
  font-weight: 700;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--text-muted);
}
.matching__legend {
  margin-bottom: 18px;
  padding: 12px 14px;
  border-radius: 14px;
  background: var(--surface-2);
  border: 1px solid var(--border);
}
.matching__options { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.matching__option { display: grid; grid-template-columns: auto 1fr; gap: 10px; align-items: start; }
.matching__option-num {
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border-radius: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  font-weight: 700;
  font-size: 14px;
}
.matching__option-text { padding-top: 1px; }
.matching__rows { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.match-row {
  padding: 12px 14px;
  border: 2px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
  transition: border-color .15s, background-color .15s;
}
.match-row.is-filled { border-color: color-mix(in srgb, var(--primary) 45%, var(--border)); }
.match-row.is-active { border-color: var(--primary); box-shadow: 0 0 0 3px var(--focus); }
.match-row__head { display: grid; grid-template-columns: auto 1fr; gap: 12px; align-items: start; }
.match-row__letter {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 9px;
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 800;
}
.match-row__text { padding-top: 3px; font-weight: 600; }
.match-row__choices { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0 0 42px; }
.match-choice {
  display: grid;
  place-items: center;
  min-width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 2px solid var(--border);
  background: var(--surface);
  font-weight: 700;
  font-size: 16px;
  cursor: pointer;
  transition: background-color .15s, border-color .15s, color .15s;
}
.match-choice:hover { border-color: var(--primary); }
.match-choice.is-selected { background: var(--primary); border-color: var(--primary); color: #fff; }
.match-choice.is-taken { border-style: dashed; color: var(--text-muted); background: var(--surface-2); }
.match-row__picked { margin: 6px 0 0 42px; font-size: 14px; color: var(--text-muted); }
.match-row.is-filled .match-row__picked { color: var(--primary); font-weight: 600; }
.match-row__result { margin: 8px 0 0 42px; }
.match-row__line { font-size: 15px; }
.match-row__result .statement__tag { margin: 0 0 6px; }
.matching.is-answered .statement__explanation { color: var(--text); opacity: .88; }
.match-row.status-right {
  border-color: color-mix(in srgb, var(--right) 30%, var(--border));
  box-shadow: inset 4px 0 0 var(--right);
}
.match-row.status-right .match-row__letter { color: var(--right); background: color-mix(in srgb, var(--right) 12%, transparent); }
.match-row.status-right .statement__tag { color: var(--right); background: color-mix(in srgb, var(--right) 10%, transparent); }
.match-row.status-wrong {
  border-color: var(--wrong);
  background: var(--wrong-bg);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--wrong) 18%, transparent);
}
.match-row.status-wrong .match-row__letter { background: var(--wrong); color: #fff; }
.match-row.status-wrong .statement__tag { color: var(--wrong-bg); background: var(--wrong); }
.matching__key { margin-top: 12px; font-size: 15px; }
.review-item__body .matching { margin-top: 4px; }
.review-item__body .matching__legend { background: var(--surface); }

/* Итог по заданию */
.feedback {
  margin-top: 20px;
  padding: 16px;
  border-radius: 14px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  animation: rise .25s ease;
}
.feedback__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 24px;
}
.feedback__answers { display: flex; flex-direction: column; gap: 2px; }

.points { display: flex; flex-direction: column; }
.points__value { font-size: 26px; font-weight: 800; line-height: 1.1; }
.points__caption { font-size: 14px; color: var(--text-muted); }
.points--full .points__value, .mistake__points.points--full { color: var(--right); }
.points--partial .points__value, .mistake__points.points--partial { color: var(--warn); }
.points--none .points__value, .mistake__points.points--none { color: var(--wrong); }

.task__actions { margin-top: 20px; display: flex; flex-wrap: wrap; gap: 10px; justify-content: flex-end; }
.task__actions-spacer { flex: 1 1 auto; }
.task.is-review .task__hint { color: var(--primary); font-weight: 600; }

.kbd-hint { margin-top: 14px; font-size: 13px; color: var(--text-muted); text-align: right; }
kbd {
  display: inline-block;
  padding: 0 6px;
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 6px;
  background: var(--surface-2);
  font: 600 12px/1.6 var(--font);
}

/* ===== Результаты ===== */
.result { text-align: center; }
.result__ring {
  --pct: 0;
  --ring-color: var(--primary);
  width: 148px;
  height: 148px;
  margin: 4px auto 16px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background:
    radial-gradient(closest-side, var(--surface) 78%, transparent 79%),
    conic-gradient(var(--ring-color) calc(var(--pct) * 1%), var(--border) 0);
}
.result__ring span { font-size: 34px; font-weight: 800; }
.result__ring.is-high { --ring-color: var(--right); }
.result__ring.is-mid { --ring-color: var(--warn); }
.result__ring.is-low { --ring-color: var(--wrong); }
.result__title { font-size: 24px; font-weight: 800; }
.result__score { margin-top: 6px; font-size: 20px; font-weight: 700; color: var(--primary); }
.result__message { margin-top: 8px; color: var(--text-muted); }
.result__actions {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

.section-title { font-size: 18px; font-weight: 700; margin-bottom: 12px; }
.mistakes { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.mistake {
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-2);
}
.mistake__head { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.mistake__num { font-weight: 700; }
.mistake__points { margin-left: auto; font-weight: 700; font-size: 14px; }
.mistake__question { margin-top: 6px; }
.mistake__answers { margin-top: 4px; font-size: 15px; color: var(--text-muted); }
/* Разбор попытки */
.review__head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 12px; margin-bottom: 12px; }
.review__head .section-title { margin-bottom: 0; }
.review__filter { margin-bottom: 16px; }
.review-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.review-list__empty { color: var(--right); font-weight: 600; }
.review-item__details {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-2);
}
.review-item__summary {
  display: block;
  padding: 14px;
  cursor: pointer;
  list-style: none;
  border-radius: 12px;
}
.review-item__summary::-webkit-details-marker { display: none; }
.review-item__summary:hover { background: color-mix(in srgb, var(--primary) 5%, transparent); }
.review-item__toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}
.review-item__toggle::after {
  content: "";
  width: 7px;
  height: 7px;
  border: solid currentColor;
  border-width: 0 2px 2px 0;
  transform: translateY(-2px) rotate(45deg);
  transition: transform .15s;
}
.review-item__details[open] .review-item__toggle { font-size: 0; }
.review-item__details[open] .review-item__toggle::before { content: "Скрыть разбор"; font-size: 14px; }
.review-item__details[open] .review-item__toggle::after { transform: translateY(2px) rotate(-135deg); }
.review-item__body { padding: 0 14px 14px; }
.review-item__body .statements { margin-top: 4px; }
.feedback--static { animation: none; background: var(--surface); }
.text-right { color: var(--right); }
.text-wrong { color: var(--wrong); }

@keyframes rise {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

/* ===== Смартфоны ===== */
@media (max-width: 560px) {
  .container { padding: 16px 12px 32px; }
  .panel { padding: 18px 16px; }
  .topic-grid { grid-template-columns: 1fr; }
  .segmented { display: flex; }
  .segmented__item { flex: 1; }
  .segmented__item span { min-width: 0; }
  .statement__btn { gap: 10px; padding: 12px; }
  .statement__details { padding: 0 12px 12px 12px; }
  .task__actions .btn, .result__actions .btn { width: 100%; }
  .task__actions-spacer { display: none; }
  .task__actions { flex-direction: column-reverse; }
  .review__filter { width: 100%; }
  .review-item__summary { padding: 12px; }
  .review-item__body { padding: 0 10px 12px; }
  .task-nav__item { min-width: 34px; height: 34px; }
  .kbd-hint { display: none; }
  .match-row { padding: 12px; }
  .match-row__choices, .match-row__picked, .match-row__result { margin-left: 0; }
  .match-row__choices { display: grid; grid-template-columns: repeat(auto-fit, minmax(40px, 1fr)); gap: 6px; }
  .match-choice { min-width: 0; }
  .brand__subtitle { display: none; }
}

/* ===== Подтверждение выхода ===== */
.exit-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  margin-bottom: 16px;
  padding: 14px 16px;
  border: 1px solid var(--warn-border);
  border-radius: 14px;
  background: var(--warn-bg);
  animation: rise .2s ease;
}
.exit-bar__text { flex: 1 1 220px; font-weight: 600; }
.exit-bar__actions { display: flex; gap: 8px; flex-wrap: wrap; }
.exit-bar .btn { min-height: 40px; padding: 8px 16px; }