:root {
  --bg: #fff8ee;
  --text: #18354f;
  --muted: #4f6f8e;
  --line: rgba(62, 132, 200, 0.33);
  --blue: #2f8df6;
  --blue-2: #36c6ff;
  --mint: #d2ffe8;
  --peach: #ffd7b7;
  --sun: #ffe36b;
  --coral: #ff8da0;
  --green: #7ed957;
  --orange: #ff9f32;
  --shadow: 0 18px 45px rgba(37, 91, 143, 0.2);
  --radius: 28px;
  --page-width: 1180px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  min-height: 100vh;
  padding-top: 96px;
  font-family: "Onest", "Segoe UI", sans-serif;
  color: var(--text);
  line-height: 1.45;
  background: radial-gradient(circle at 18% 14%, rgba(255, 227, 107, 0.35), transparent 24%),
  radial-gradient(circle at 85% 22%, rgba(54, 198, 255, 0.28), transparent 28%),
  radial-gradient(circle at 78% 78%, rgba(255, 141, 160, 0.22), transparent 26%),
  linear-gradient(180deg, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0.23)),
  url("images/backgr.png");
  background-position: center;
  position: relative;
}

body.nav-open { overflow: hidden; }

.page-bg {
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    radial-gradient(circle at 18% 14%, rgba(255, 227, 107, 0.35), transparent 24%),
    radial-gradient(circle at 85% 22%, rgba(54, 198, 255, 0.28), transparent 28%),
    radial-gradient(circle at 78% 78%, rgba(255, 141, 160, 0.22), transparent 26%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0.23)),
    url("images/backgr.png");
  background-size: cover;
  background-position: center;
}

.top-nav {
  position: fixed;
  top: 12px;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  justify-content: center;
  padding: 0 16px;
  pointer-events: none;
}

.top-nav__inner {
  position: relative;
  width: min(1060px, 100%);
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 10px 18px;
  border: 1px solid rgba(62, 132, 200, 0.28);
  border-radius: 20px;
  background: linear-gradient(100deg, rgba(255,255,255,.94), rgba(225,248,255,.92), rgba(255,239,215,.92));
  backdrop-filter: blur(8px);
  box-shadow: 0 12px 28px rgba(51, 78, 108, 0.16);
  pointer-events: auto;
}

.top-nav__brand {
  color: #1f71d1;
  font-family: "Comfortaa", "Onest", sans-serif;
  font-size: clamp(16px, 2.3vw, 24px);
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}

.top-nav__menu { display: flex; align-items: center; gap: 6px; }

.top-nav__link {
  padding: 10px 12px;
  border-radius: 12px;
  color: #21517f;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: background .2s ease, color .2s ease, transform .2s ease;
}

.top-nav__link:hover,
.top-nav__link.is-active {
  color: #114c92;
  background: linear-gradient(120deg, rgba(54,198,255,.24), rgba(255,227,107,.28));
  transform: translateY(-1px);
}

.top-nav__burger {
  width: 44px;
  height: 44px;
  border: 1px solid rgba(47,141,246,.4);
  border-radius: 12px;
  background: rgba(255,255,255,.72);
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  cursor: pointer;
}

.top-nav__burger span {
  width: 18px;
  height: 2px;
  border-radius: 20px;
  background: #1e5e9f;
  transition: transform .22s ease, opacity .22s ease;
}

.top-nav.is-open .top-nav__burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.top-nav.is-open .top-nav__burger span:nth-child(2) { opacity: 0; }
.top-nav.is-open .top-nav__burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.erudit-page,
.footer {
  width: min(var(--page-width), calc(100% - 32px));
  margin-right: auto;
  margin-left: auto;
}

.erudit-page {
  display: grid;
  gap: 18px;
  margin-bottom: 34px;
}

.erudit-hero,
.erudit-catalog {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(circle at 88% 16%, rgba(255,227,107,.42), transparent 38%),
    radial-gradient(circle at 10% 88%, rgba(54,198,255,.26), transparent 42%),
    linear-gradient(145deg, rgba(255,255,255,.94), rgba(246,253,255,.9));
  box-shadow: var(--shadow);
}

.erudit-hero::before,
.erudit-catalog::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 6px;
  background: linear-gradient(90deg, var(--blue), var(--blue-2), var(--green), var(--sun), var(--coral));
  opacity: .9;
}

.erudit-hero {
  padding: clamp(28px, 5vw, 58px);
  text-align: center;
}

.erudit-hero__badge,
.erudit-catalog__label,
.erudit-card__type {
  display: inline-block;
  width: fit-content;
  margin: 0 0 12px;
  padding: 8px 16px;
  border-radius: 999px;
  color: #5f5867;
  background: linear-gradient(90deg, var(--peach), #fff2d5);
  font-size: 15px;
  font-weight: 800;
}

.erudit-hero h1,
.erudit-catalog__head h2,
.erudit-card h3 {
  margin: 0;
  font-family: "Comfortaa", "Onest", sans-serif;
  color: #2b6ab8;
  line-height: 1.08;
}

.erudit-hero h1 { font-size: clamp(42px, 6.4vw, 78px); }

.erudit-hero > p:not(.erudit-hero__badge) {
  max-width: 820px;
  margin: 16px auto 0;
  color: #365877;
  font-size: clamp(18px, 2vw, 23px);
}

.erudit-catalog { padding: clamp(18px, 3vw, 32px); }

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

.erudit-catalog__head h2 { font-size: clamp(30px, 3.5vw, 46px); }

.erudit-catalog__head > p {
  max-width: 430px;
  margin: 0;
  color: #3f6488;
  font-size: 17px;
  font-weight: 600;
}

.erudit-list { display: grid; gap: 16px; }

.erudit-card {
  position: relative;
  overflow: hidden;
  min-height: 190px;
  display: grid;
  grid-template-columns: 112px minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(18px, 3vw, 34px);
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid rgba(47,141,246,.26);
  border-radius: 26px;
  background:
    radial-gradient(circle at 86% 18%, rgba(255,227,107,.2), transparent 34%),
    linear-gradient(135deg, rgba(255,255,255,.94), rgba(235,249,255,.88));
  box-shadow: inset 0 1px 0 rgba(255,255,255,.72), 0 12px 25px rgba(37,91,143,.12);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}

.erudit-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 7px;
  background: linear-gradient(180deg, var(--blue), var(--blue-2));
}

.erudit-card--logic::before { background: linear-gradient(180deg, var(--green), var(--sun)); }
.erudit-card--literature::before { background: linear-gradient(180deg, var(--coral), var(--orange)); }

.erudit-card:hover {
  transform: translateY(-3px);
  border-color: rgba(47,141,246,.38);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.75), 0 18px 34px rgba(37,91,143,.18);
}

.erudit-card__icon {
  width: 104px;
  aspect-ratio: 1 / 1;
  display: grid;
  place-items: center;
  border: 4px solid rgba(255,255,255,.92);
  border-radius: 28px;
  background: radial-gradient(circle at 30% 24%, rgba(255,255,255,.9), transparent 28%), linear-gradient(145deg, #d8f5ff, #79cfff);
  color: #1f71d1;
  font-family: "Comfortaa", "Onest", sans-serif;
  font-size: 48px;
  font-weight: 700;
  box-shadow: 0 12px 24px rgba(37,91,143,.18);
}

.erudit-card--logic .erudit-card__icon {
  color: #4b7b2a;
  background: radial-gradient(circle at 30% 24%, rgba(255,255,255,.9), transparent 28%), linear-gradient(145deg, #e4ffd2, #ffe68a);
}

.erudit-card--literature .erudit-card__icon {
  color: #9b4f55;
  background: radial-gradient(circle at 30% 24%, rgba(255,255,255,.9), transparent 28%), linear-gradient(145deg, #ffe2e7, #ffd39a);
}

.erudit-card__content { min-width: 0; }
.erudit-card__type { margin-bottom: 10px; padding: 6px 12px; font-size: 13px; }
.erudit-card h3 { font-size: clamp(26px, 3vw, 40px); }

.erudit-card__content > p:last-child {
  max-width: 720px;
  margin: 10px 0 0;
  color: #365877;
  font-size: clamp(16px, 1.7vw, 20px);
}

.erudit-card__button {
  min-width: 180px;
  min-height: 62px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 15px 26px;
  border: 1px solid rgba(47,141,246,.24);
  border-radius: 18px;
  color: #fff;
  background: linear-gradient(130deg, var(--blue), var(--blue-2), #58e4b5);
  box-shadow: 0 11px 24px rgba(47,141,246,.34);
  font-size: 18px;
  font-weight: 800;
  text-decoration: none;
  transition: transform .2s ease, box-shadow .2s ease, filter .2s ease;
}

.erudit-card__button:hover {
  transform: translateY(-2px);
  filter: brightness(1.04);
  box-shadow: 0 15px 28px rgba(47,141,246,.42);
}

.erudit-card__button:focus-visible {
  outline: 4px solid rgba(255,227,107,.92);
  outline-offset: 4px;
}

.footer {
  margin-bottom: 30px;
  color: #446789;
  font-size: 14px;
  text-align: center;
}

@media (max-width: 900px) {
  .erudit-catalog__head { display: grid; align-items: start; }
  .erudit-catalog__head > p { max-width: none; }
  .erudit-card { grid-template-columns: 92px minmax(0, 1fr); }
  .erudit-card__icon { width: 88px; border-radius: 24px; font-size: 40px; }
  .erudit-card__button { grid-column: 1 / -1; width: 100%; }
}

@media (max-width: 700px) {
  body { padding-top: 82px; }
  .top-nav { top: 8px; padding: 0 8px; }
  .top-nav__inner { min-height: 60px; padding: 8px 10px 8px 14px; border-radius: 16px; }
  .top-nav__brand { font-size: 15px; }
  .top-nav__burger { display: flex; }

  .top-nav__menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: min(320px, calc(100vw - 16px));
    display: grid;
    gap: 4px;
    padding: 10px;
    border: 1px solid rgba(47,141,246,.26);
    border-radius: 16px;
    background: linear-gradient(145deg, rgba(255,255,255,.97), rgba(229,248,255,.95));
    box-shadow: 0 14px 26px rgba(50,80,113,.2);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity .22s ease, transform .22s ease, visibility .22s ease;
  }

  .top-nav.is-open .top-nav__menu {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
  }

  .top-nav__link { padding: 11px 12px; border-radius: 10px; }
  .erudit-page, .footer { width: calc(100% - 16px); }
  .erudit-hero, .erudit-catalog { border-radius: 22px; }
  .erudit-hero { padding: 26px 18px; }
  .erudit-catalog { padding: 16px 10px 10px; }

  .erudit-card {
    min-height: 0;
    grid-template-columns: 1fr;
    justify-items: center;
    gap: 15px;
    padding: 22px 16px;
    text-align: center;
    border-radius: 22px;
  }

  .erudit-card::before { inset: 0 0 auto; width: auto; height: 6px; }
  .erudit-card__icon { width: 92px; }
  .erudit-card__type { margin-right: auto; margin-left: auto; }
  .erudit-card__button { grid-column: auto; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}


.trainer-shell {
  position: relative;
  overflow: hidden;
  min-height: min(820px, calc(100vh - 64px));
  border: 1px solid rgba(62, 132, 200, .28);
  border-radius: 32px;
  background: #fff;
  box-shadow: var(--shadow);
}

.trainer-topline {
  height: 7px;
  background: linear-gradient(90deg, var(--blue), var(--cyan), var(--green), var(--yellow), #ff9aad);
}

.trainer-screen {
  display: none;
  padding: clamp(22px, 4vw, 48px);
}

.trainer-screen.is-active { display: block; }

.trainer-header {
  max-width: 820px;
  margin: 0 auto 30px;
  text-align: center;
}

.trainer-kicker {
  display: inline-flex;
  margin: 0 0 12px;
  padding: 9px 17px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--peach), #fff2d5);
  color: #375678;
  font-weight: 800;
}

.trainer-header h1 {
  margin: 0;
  font-family: "Comfortaa", "Onest", sans-serif;
  font-size: clamp(34px, 4.8vw, 64px);
  line-height: 1.08;
  color: #2b6ab8;
}

.trainer-header > p:last-child {
  margin: 16px auto 0;
  color: var(--muted);
  font-size: clamp(17px, 2vw, 22px);
}

.settings-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.setting-card {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: linear-gradient(145deg, #fff, #f7fcff);
  box-shadow: 0 10px 26px rgba(37, 91, 143, .09);
}

.setting-card--wide { grid-column: 1 / -1; }

.setting-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.setting-card__head > div {
  display: flex;
  align-items: center;
  gap: 12px;
}

.setting-card h2 {
  margin: 0;
  font-family: "Comfortaa", "Onest", sans-serif;
  color: var(--blue-dark);
  font-size: clamp(20px, 2.3vw, 28px);
}

.setting-number {
  display: grid;
  place-items: center;
  flex: 0 0 38px;
  width: 38px;
  height: 38px;
  border-radius: 13px;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  color: #fff;
  font-weight: 800;
  box-shadow: 0 8px 16px rgba(47, 141, 246, .25);
}

.text-button {
  border: 0;
  padding: 8px 10px;
  color: var(--blue-dark);
  background: transparent;
  font-weight: 800;
  cursor: pointer;
}

.table-picker {
  display: grid;
  grid-template-columns: repeat(8, minmax(72px, 1fr));
  gap: 12px;
}

.choice-card,
.table-card,
.mode-card,
.preset-card {
  border: 1px solid rgba(47, 141, 246, .22);
  border-radius: 18px;
  background: #fff;
  color: var(--blue-dark);
  box-shadow: 0 8px 18px rgba(37, 91, 143, .1);
  cursor: pointer;
  transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease, background .18s ease;
}

.choice-card:hover,
.table-card:hover,
.mode-card:hover,
.preset-card:hover {
  transform: translateY(-2px);
  border-color: rgba(47, 141, 246, .48);
  box-shadow: 0 12px 24px rgba(37, 91, 143, .14);
}

.table-card {
  min-height: 78px;
  font-family: "Comfortaa", sans-serif;
  font-size: 27px;
  font-weight: 700;
}

.choice-card.is-selected,
.table-card.is-selected,
.mode-card.is-selected,
.preset-card.is-selected {
  border-color: rgba(255, 184, 77, .85);
  background: linear-gradient(145deg, #fff9d9, #fff2c5);
  box-shadow: 0 10px 24px rgba(255, 184, 77, .22);
}

.table-card.is-selected::after { content: " ✓"; color: var(--green-dark); }

.preset-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.preset-card { padding: 11px 16px; font-weight: 800; }

.choice-grid { display: grid; gap: 12px; }
.choice-grid--count { grid-template-columns: repeat(5, 1fr); }
.choice-grid--order { grid-template-columns: repeat(2, 1fr); }
.choice-card { min-height: 62px; padding: 12px; font-weight: 800; }

.mode-picker { display: grid; gap: 12px; }
.mode-card {
  min-height: 64px;
  padding: 14px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  text-align: left;
  font-weight: 800;
}
.mode-card span:first-child { font-size: 24px; }

.settings-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: 24px;
  padding: 18px 20px;
  border-radius: 22px;
  background: linear-gradient(135deg, rgba(220,247,255,.72), rgba(255,246,215,.72));
}

.selection-summary { margin: 0; font-weight: 800; color: #365877; }

.trainer-btn {
  min-height: 52px;
  border: 0;
  border-radius: 16px;
  padding: 13px 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  cursor: pointer;
  transition: transform .18s ease, box-shadow .18s ease, opacity .18s ease;
}
.trainer-btn:hover:not(:disabled) { transform: translateY(-2px); }
.trainer-btn:disabled { opacity: .45; cursor: not-allowed; }
.trainer-btn--primary { background: linear-gradient(130deg, var(--blue), var(--cyan), var(--green)); box-shadow: 0 10px 22px rgba(47,141,246,.3); }
.trainer-btn--ghost { color: var(--blue-dark); background: linear-gradient(135deg, #fff, #e9f9ff); border: 1px solid rgba(47,141,246,.28); box-shadow: 0 8px 18px rgba(37,91,143,.1); }
.trainer-btn--large { min-width: 235px; min-height: 60px; font-size: 18px; }
.trainer-btn--compact { min-height: 46px; padding: 10px 16px; }

.training-hud {
  display: grid;
  grid-template-columns: repeat(3, 1fr) auto;
  gap: 12px;
  align-items: stretch;
}

.hud-stat {
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fbfeff;
  box-shadow: 0 8px 18px rgba(37,91,143,.08);
}
.hud-stat span { display: block; color: var(--muted); font-size: 13px; font-weight: 800; text-transform: uppercase; letter-spacing: .04em; }
.hud-stat strong { display: block; margin-top: 3px; font-family: "Comfortaa", sans-serif; color: var(--blue-dark); font-size: 24px; }

.emoji-progress {
  min-height: 44px;
  margin: 20px 0;
  padding: 10px 14px;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 7px;
  border-radius: 18px;
  background: #f5fbff;
  border: 1px solid rgba(47,141,246,.14);
  font-size: 22px;
}

.exercise-card {
  max-width: 900px;
  min-height: 520px;
  margin: 0 auto;
  padding: clamp(24px, 5vw, 54px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: linear-gradient(145deg, #fff, #f8fcff);
  box-shadow: 0 14px 34px rgba(37,91,143,.12);
  text-align: center;
}

.exercise-label { margin: 0 0 14px; color: var(--muted); font-weight: 800; text-transform: uppercase; letter-spacing: .06em; }
.exercise-expression { font-family: "Comfortaa", sans-serif; font-size: clamp(54px, 9vw, 104px); font-weight: 700; line-height: 1; color: #245f9c; }
.feedback { min-height: 34px; margin-top: 18px; font-size: 20px; font-weight: 800; }
.feedback.is-good { color: var(--green-dark); }
.feedback.is-bad { color: #b54658; }

.hint-panel {
  width: min(720px, 100%);
  margin: 12px 0 0;
  padding: 14px 18px;
  border-radius: 18px;
  background: #fff8d9;
  border: 1px solid rgba(255,184,77,.35);
  color: #6a5433;
  font-weight: 700;
  line-height: 1.55;
}

.answer-area { width: min(720px, 100%); margin-top: 24px; }
.answer-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.answer-card {
  min-height: 92px;
  border: 1px solid rgba(47,141,246,.22);
  border-radius: 22px;
  background: #fff;
  color: var(--blue-dark);
  box-shadow: 0 10px 22px rgba(37,91,143,.1);
  font-family: "Comfortaa", sans-serif;
  font-size: 34px;
  font-weight: 700;
  cursor: pointer;
  transition: transform .16s ease, box-shadow .16s ease, background .16s ease, border-color .16s ease;
}
.answer-card:hover:not(:disabled) { transform: translateY(-3px); box-shadow: 0 14px 26px rgba(37,91,143,.15); }
.answer-card.is-correct { background: #e2faed; border-color: #71d5a5; color: #1d7855; }
.answer-card.is-wrong { background: #fff0f2; border-color: #f1a4af; color: #ad4051; animation: shake .34s ease; }

.input-answer { display: grid; grid-template-columns: 1fr auto; gap: 12px; }
.input-answer input {
  min-width: 0;
  height: 72px;
  border: 2px solid rgba(47,141,246,.24);
  border-radius: 19px;
  padding: 0 18px;
  color: var(--blue-dark);
  background: #fff;
  font-family: "Comfortaa", sans-serif;
  font-size: 34px;
  font-weight: 700;
  text-align: center;
  outline: none;
}
.input-answer input:focus { border-color: var(--blue); box-shadow: 0 0 0 5px rgba(47,141,246,.1); }

.trainer-header--result { margin-top: 18px; }
.result-emoji { font-size: 72px; line-height: 1; margin-bottom: 10px; }
.result-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; max-width: 900px; margin: 0 auto; }
.result-card { padding: 22px; border: 1px solid var(--line); border-radius: 22px; background: #fbfeff; box-shadow: 0 10px 24px rgba(37,91,143,.09); text-align: center; }
.result-card span { display: block; color: var(--muted); font-weight: 800; }
.result-card strong { display: block; margin-top: 8px; font-family: "Comfortaa", sans-serif; color: var(--blue-dark); font-size: clamp(28px, 4vw, 42px); }

.review-card { max-width: 900px; margin: 18px auto 0; padding: 22px; border-radius: 22px; border: 1px solid rgba(255,184,77,.28); background: linear-gradient(145deg, #fffdf2, #fff8d9); }
.review-card h2 { margin: 0 0 14px; font-family: "Comfortaa", sans-serif; color: #715837; }
.review-list { display: flex; flex-wrap: wrap; gap: 10px; }
.review-chip { padding: 9px 14px; border-radius: 999px; background: #fff; border: 1px solid rgba(255,184,77,.42); color: #684e2d; font-weight: 800; }
.review-empty { margin: 0; color: var(--green-dark); font-weight: 800; }
.result-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; margin-top: 24px; }

@keyframes shake { 0%,100%{transform:translateX(0)} 30%{transform:translateX(-8px)} 60%{transform:translateX(8px)} }

@media (max-width: 900px) {
  .table-picker { grid-template-columns: repeat(4, 1fr); }
  .settings-grid { grid-template-columns: 1fr; }
  .setting-card--wide { grid-column: auto; }
  .training-hud { grid-template-columns: repeat(3, 1fr); }
  .training-hud .trainer-btn { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  .erudit-page { width: calc(100% - 16px); padding: 8px 0 24px; }
  .trainer-shell { border-radius: 22px; min-height: calc(100vh - 16px); }
  .trainer-screen { padding: 18px; }
  .setting-card { padding: 16px; }
  .setting-card__head { align-items: flex-start; }
  .setting-card__head > div { align-items: flex-start; }
  .table-picker { grid-template-columns: repeat(4, 1fr); gap: 8px; }
  .table-card { min-height: 60px; font-size: 22px; }
  .choice-grid--count { grid-template-columns: repeat(3, 1fr); }
  .choice-grid--order { grid-template-columns: 1fr; }
  .settings-footer { align-items: stretch; flex-direction: column; }
  .trainer-btn--large { width: 100%; }
  .training-hud { grid-template-columns: 1fr 1fr; }
  .hud-stat:nth-child(3) { grid-column: 1 / -1; }
  .answer-grid { grid-template-columns: 1fr; }
  .answer-card { min-height: 70px; }
  .input-answer { grid-template-columns: 1fr; }
  .result-grid { grid-template-columns: 1fr; }
  .exercise-card { min-height: 460px; padding: 24px 16px; }
}


/* =========================================================
   ДОБРЫНЯ-ЭРУДИТ: ТРЕНАЖЁР ТАБЛИЦЫ УМНОЖЕНИЯ
   Добавлено поверх базового erudit.css проекта
   ========================================================= */

button,
input { font: inherit; }

button { -webkit-tap-highlight-color: transparent; }

.trainer-page {
  width: min(var(--page-width), calc(100% - 32px));
  margin: 14px auto 34px;
}

.trainer-shell {
  position: relative;
  overflow: hidden;
  min-height: 720px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(circle at 90% 8%, rgba(255, 227, 107, .34), transparent 28%),
    radial-gradient(circle at 7% 90%, rgba(54, 198, 255, .22), transparent 32%),
    linear-gradient(145deg, rgba(255,255,255,.96), rgba(246,253,255,.92));
  box-shadow: var(--shadow);
}

.trainer-topline {
  height: 6px;
  background: linear-gradient(90deg, var(--blue), var(--blue-2), var(--green), var(--sun), var(--coral));
}

.trainer-screen {
  display: none;
  padding: clamp(20px, 3.4vw, 38px);
}

.trainer-screen.is-active { display: block; }

.trainer-header {
  max-width: 850px;
  margin: 0 auto 26px;
  text-align: center;
}

.trainer-kicker {
  display: inline-block;
  width: fit-content;
  margin: 0 0 12px;
  padding: 8px 16px;
  border-radius: 999px;
  color: #5f5867;
  background: linear-gradient(90deg, var(--peach), #fff2d5);
  font-size: 15px;
  font-weight: 800;
}

.trainer-header h1 {
  margin: 0;
  color: #2b6ab8;
  font-family: "Comfortaa", "Onest", sans-serif;
  font-size: clamp(38px, 5.2vw, 68px);
  line-height: 1.08;
}

.trainer-header > p:last-child {
  max-width: 760px;
  margin: 14px auto 0;
  color: #365877;
  font-size: clamp(17px, 1.8vw, 21px);
}

.settings-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.setting-card {
  position: relative;
  overflow: hidden;
  padding: clamp(18px, 2.6vw, 26px);
  border: 1px solid rgba(47,141,246,.26);
  border-radius: 26px;
  background:
    radial-gradient(circle at 88% 16%, rgba(255,227,107,.2), transparent 34%),
    linear-gradient(135deg, rgba(255,255,255,.95), rgba(235,249,255,.88));
  box-shadow: inset 0 1px 0 rgba(255,255,255,.75), 0 12px 25px rgba(37,91,143,.12);
}

.setting-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 7px;
  background: linear-gradient(180deg, var(--blue), var(--blue-2));
}

.setting-card--count::before { background: linear-gradient(180deg, var(--green), var(--sun)); }
.setting-card--mode::before { background: linear-gradient(180deg, var(--coral), var(--orange)); }
.setting-card--order::before { background: linear-gradient(180deg, var(--blue-2), var(--green)); }
.setting-card--wide { grid-column: 1 / -1; }

.setting-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.setting-card__head > div {
  display: flex;
  align-items: center;
  gap: 12px;
}

.setting-card h2 {
  margin: 0;
  color: #1f5b96;
  font-family: "Comfortaa", "Onest", sans-serif;
  font-size: clamp(21px, 2.2vw, 29px);
  line-height: 1.18;
}

.setting-number {
  display: grid;
  place-items: center;
  flex: 0 0 42px;
  width: 42px;
  height: 42px;
  border: 4px solid rgba(255,255,255,.9);
  border-radius: 15px;
  color: #1f71d1;
  background: radial-gradient(circle at 30% 24%, rgba(255,255,255,.9), transparent 28%), linear-gradient(145deg, #d8f5ff, #79cfff);
  box-shadow: 0 9px 18px rgba(37,91,143,.17);
  font-family: "Comfortaa", sans-serif;
  font-size: 18px;
  font-weight: 700;
}

.text-button {
  border: 1px solid rgba(47,141,246,.26);
  border-radius: 14px;
  padding: 9px 13px;
  color: #21517f;
  background: rgba(255,255,255,.78);
  box-shadow: 0 6px 14px rgba(37,91,143,.08);
  font-weight: 800;
  cursor: pointer;
}

.table-picker {
  display: grid;
  grid-template-columns: repeat(8, minmax(68px, 1fr));
  gap: 10px;
}

.choice-card,
.table-card,
.mode-card,
.preset-card,
.answer-card {
  border: 1px solid rgba(47,141,246,.3);
  color: #1f5b96;
  background:
    radial-gradient(circle at 84% 16%, rgba(255,227,107,.18), transparent 38%),
    linear-gradient(145deg, rgba(255,255,255,.96), rgba(225,245,255,.9));
  box-shadow: 0 8px 18px rgba(37,91,143,.11);
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease, background .2s ease;
}

.choice-card:hover,
.table-card:hover,
.mode-card:hover,
.preset-card:hover,
.answer-card:hover:not(:disabled) {
  transform: translateY(-2px);
  border-color: rgba(47,141,246,.5);
  box-shadow: 0 12px 23px rgba(37,91,143,.17);
}

.table-card {
  min-height: 76px;
  border-radius: 20px;
  font-family: "Comfortaa", sans-serif;
  font-size: 27px;
  font-weight: 700;
}

.choice-card.is-selected,
.table-card.is-selected,
.mode-card.is-selected,
.preset-card.is-selected {
  border-color: rgba(47,141,246,.08);
  color: #fff;
  background: linear-gradient(130deg, var(--blue), var(--blue-2), #58e4b5);
  box-shadow: 0 12px 25px rgba(47,141,246,.34);
}

.table-card.is-selected::after {
  content: " ✓";
  color: #fff;
}

.preset-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.preset-card {
  padding: 11px 16px;
  border-radius: 15px;
  font-weight: 800;
}

.choice-grid { display: grid; gap: 12px; }
.choice-grid--count { grid-template-columns: repeat(5, 1fr); }
.choice-grid--order { grid-template-columns: repeat(2, 1fr); }
.choice-card { min-height: 62px; padding: 12px; border-radius: 18px; font-weight: 800; }

.mode-picker { display: grid; gap: 12px; }
.mode-card {
  min-height: 65px;
  padding: 14px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-radius: 18px;
  text-align: left;
  font-weight: 800;
}
.mode-card span:first-child { font-size: 25px; }

.settings-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: 18px;
  padding: 18px 20px;
  border: 1px solid rgba(47,141,246,.24);
  border-radius: 22px;
  background:
    radial-gradient(circle at 90% 20%, rgba(255,227,107,.26), transparent 36%),
    linear-gradient(150deg, rgba(255,255,255,.94), rgba(225,248,255,.9));
  box-shadow: 0 10px 22px rgba(37,91,143,.1);
}

.selection-summary { margin: 0; color: #365877; font-weight: 800; }

.trainer-btn {
  min-height: 52px;
  border: 1px solid rgba(47,141,246,.24);
  border-radius: 18px;
  padding: 13px 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, filter .2s ease, opacity .2s ease;
}
.trainer-btn:hover:not(:disabled) { transform: translateY(-2px); filter: brightness(1.03); }
.trainer-btn:disabled { opacity: .45; cursor: not-allowed; }
.trainer-btn--primary { color: #fff; background: linear-gradient(130deg, var(--blue), var(--blue-2), #58e4b5); box-shadow: 0 11px 24px rgba(47,141,246,.34); }
.trainer-btn--ghost { color: #21517f; background: linear-gradient(145deg, rgba(255,255,255,.96), rgba(225,245,255,.9)); box-shadow: 0 8px 18px rgba(37,91,143,.1); }
.trainer-btn--large { min-width: 235px; min-height: 60px; font-size: 18px; }
.trainer-btn--compact { min-height: 46px; padding: 10px 16px; }

.training-hud {
  display: grid;
  grid-template-columns: repeat(3, 1fr) auto;
  gap: 12px;
  align-items: stretch;
}

.hud-stat {
  padding: 12px 16px;
  border: 1px solid rgba(47,141,246,.26);
  border-radius: 20px;
  background: linear-gradient(145deg, rgba(255,255,255,.95), rgba(235,249,255,.88));
  box-shadow: 0 9px 20px rgba(37,91,143,.1);
}
.hud-stat span { display: block; color: #4f6f8e; font-size: 13px; font-weight: 800; text-transform: uppercase; letter-spacing: .04em; }
.hud-stat strong { display: block; margin-top: 3px; color: #1f5b96; font-family: "Comfortaa", sans-serif; font-size: 24px; }

.emoji-progress {
  min-height: 48px;
  margin: 18px 0;
  padding: 10px 14px;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 7px;
  border: 1px solid rgba(47,141,246,.2);
  border-radius: 20px;
  background: rgba(255,255,255,.76);
  box-shadow: 0 8px 18px rgba(37,91,143,.08);
  font-size: 22px;
}

.exercise-card {
  position: relative;
  overflow: hidden;
  max-width: 900px;
  min-height: 500px;
  margin: 0 auto;
  padding: clamp(24px, 5vw, 54px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(47,141,246,.28);
  border-radius: 28px;
  background:
    radial-gradient(circle at 88% 16%, rgba(255,227,107,.25), transparent 35%),
    radial-gradient(circle at 10% 90%, rgba(54,198,255,.18), transparent 38%),
    linear-gradient(145deg, rgba(255,255,255,.97), rgba(240,251,255,.92));
  box-shadow: 0 15px 32px rgba(37,91,143,.15);
  text-align: center;
}

.exercise-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 6px;
  background: linear-gradient(90deg, var(--blue), var(--sun), var(--coral));
  opacity: .85;
}

.exercise-label {
  margin: 0 0 14px;
  padding: 7px 14px;
  border-radius: 999px;
  color: #5f5867;
  background: linear-gradient(90deg, var(--peach), #fff2d5);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .05em;
}

.exercise-expression {
  color: #2b6ab8;
  font-family: "Comfortaa", sans-serif;
  font-size: clamp(54px, 9vw, 104px);
  font-weight: 700;
  line-height: 1;
}

.feedback { min-height: 34px; margin-top: 18px; font-size: 20px; font-weight: 800; }
.feedback.is-good { color: #358a55; }
.feedback.is-bad { color: #b54658; }

.hint-panel {
  width: min(720px, 100%);
  margin: 12px 0 0;
  padding: 14px 18px;
  border: 1px solid rgba(255,184,77,.38);
  border-radius: 18px;
  color: #6a5433;
  background: linear-gradient(145deg, #fffdf2, #fff4c8);
  box-shadow: 0 8px 18px rgba(255,184,77,.13);
  font-weight: 700;
  line-height: 1.55;
}

.answer-area { width: min(720px, 100%); margin-top: 24px; }
.answer-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.answer-card {
  min-height: 92px;
  border-radius: 22px;
  font-family: "Comfortaa", sans-serif;
  font-size: 34px;
  font-weight: 700;
}
.answer-card.is-correct { color: #24734e; border-color: #71d5a5; background: linear-gradient(145deg, #effff5, #d2ffe8); }
.answer-card.is-wrong { color: #ad4051; border-color: #f1a4af; background: linear-gradient(145deg, #fff7f8, #ffe2e7); animation: trainer-shake .34s ease; }

.input-answer { display: grid; grid-template-columns: 1fr auto; gap: 12px; }
.input-answer input {
  min-width: 0;
  height: 72px;
  border: 2px solid rgba(47,141,246,.28);
  border-radius: 20px;
  padding: 0 18px;
  color: #1f5b96;
  background: rgba(255,255,255,.95);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.7), 0 8px 18px rgba(37,91,143,.1);
  font-family: "Comfortaa", sans-serif;
  font-size: 34px;
  font-weight: 700;
  text-align: center;
  outline: none;
}
.input-answer input:focus { border-color: var(--blue); box-shadow: 0 0 0 5px rgba(47,141,246,.11), 0 8px 18px rgba(37,91,143,.1); }

.trainer-header--result { margin-top: 10px; }
.result-emoji { margin-bottom: 10px; font-size: 72px; line-height: 1; }
.result-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; max-width: 900px; margin: 0 auto; }
.result-card {
  position: relative;
  overflow: hidden;
  padding: 22px;
  border: 1px solid rgba(47,141,246,.26);
  border-radius: 24px;
  background: linear-gradient(145deg, rgba(255,255,255,.96), rgba(235,249,255,.9));
  box-shadow: 0 10px 24px rgba(37,91,143,.11);
  text-align: center;
}
.result-card::before { content: ""; position: absolute; inset: 0 0 auto; height: 5px; background: linear-gradient(90deg, var(--blue), var(--blue-2), var(--green)); }
.result-card span { display: block; color: #4f6f8e; font-weight: 800; }
.result-card strong { display: block; margin-top: 8px; color: #1f5b96; font-family: "Comfortaa", sans-serif; font-size: clamp(28px, 4vw, 42px); }

.review-card {
  max-width: 900px;
  margin: 18px auto 0;
  padding: 22px;
  border: 1px solid rgba(255,184,77,.3);
  border-radius: 24px;
  background: linear-gradient(145deg, rgba(255,255,255,.96), #fff8d9);
  box-shadow: 0 10px 24px rgba(255,184,77,.11);
}
.review-card h2 { margin: 0 0 14px; color: #715837; font-family: "Comfortaa", sans-serif; }
.review-list { display: flex; flex-wrap: wrap; gap: 10px; }
.review-chip { padding: 9px 14px; border: 1px solid rgba(255,184,77,.42); border-radius: 999px; color: #684e2d; background: rgba(255,255,255,.9); font-weight: 800; }
.review-empty { margin: 0; color: #358a55; font-weight: 800; }
.result-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; margin-top: 24px; }

@keyframes trainer-shake {
  0%, 100% { transform: translateX(0); }
  30% { transform: translateX(-8px); }
  60% { transform: translateX(8px); }
}

@media (max-width: 900px) {
  .table-picker { grid-template-columns: repeat(4, 1fr); }
  .settings-grid { grid-template-columns: 1fr; }
  .setting-card--wide { grid-column: auto; }
  .training-hud { grid-template-columns: repeat(3, 1fr); }
  .training-hud .trainer-btn { grid-column: 1 / -1; }
}

@media (max-width: 700px) {
  .trainer-page { width: calc(100% - 16px); margin-top: 8px; }
  .trainer-shell { border-radius: 22px; }
  .trainer-screen { padding: 18px 12px; }
  .setting-card { padding: 18px 14px; border-radius: 22px; }
  .setting-card__head { align-items: flex-start; }
  .setting-card__head > div { align-items: flex-start; }
  .setting-number { flex-basis: 38px; width: 38px; height: 38px; }
  .table-picker { grid-template-columns: repeat(4, 1fr); gap: 8px; }
  .table-card { min-height: 60px; font-size: 22px; }
  .choice-grid--count { grid-template-columns: repeat(3, 1fr); }
  .choice-grid--order { grid-template-columns: 1fr; }
  .settings-footer { align-items: stretch; flex-direction: column; }
  .trainer-btn--large { width: 100%; }
  .training-hud { grid-template-columns: 1fr 1fr; }
  .hud-stat:nth-child(3) { grid-column: 1 / -1; }
  .answer-grid { grid-template-columns: 1fr; }
  .answer-card { min-height: 70px; }
  .input-answer { grid-template-columns: 1fr; }
  .result-grid { grid-template-columns: 1fr; }
  .exercise-card { min-height: 450px; padding: 24px 16px; border-radius: 22px; }
}