/* ============================================================
   Тесты по русскому языку · 5–11 классы
   Учительская · Арина Галицкая
   ============================================================ */

:root {
  --bg: #faf6f0;
  --bg-2: #f2ebdf;
  --surface: #fffdf9;
  --surface-2: #fff9ef;
  --text: #172d44;
  --text-strong: #0f2135;
  --muted: #5c6f84;
  --faint: #8fa0b2;
  --line: rgba(23, 45, 68, 0.14);
  --line-strong: rgba(23, 45, 68, 0.26);

  --accent: #d8543a;          /* фирменный коралловый */
  --accent-strong: #c04630;
  --accent-soft: rgba(216, 84, 58, 0.12);
  --navy: #172d44;

  --good: #1e9e6a;
  --good-bg: rgba(30, 158, 106, 0.12);
  --bad: #d64545;
  --bad-bg: rgba(214, 69, 69, 0.1);

  --radius: 20px;
  --radius-sm: 13px;
  --shadow: 0 24px 54px -28px rgba(23, 45, 68, 0.35);
  --shadow-sm: 0 12px 28px -18px rgba(23, 45, 68, 0.3);

  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-display: "Lora", Georgia, "Times New Roman", serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101b28;
    --bg-2: #0c1520;
    --surface: #182839;
    --surface-2: #1d3044;
    --text: #ece5d8;
    --text-strong: #faf6f0;
    --muted: #a5b2c2;
    --faint: #74849a;
    --line: rgba(236, 229, 216, 0.14);
    --line-strong: rgba(236, 229, 216, 0.28);

    --accent: #e86a4e;
    --accent-strong: #f07d62;
    --accent-soft: rgba(232, 106, 78, 0.16);

    --good: #34c98d;
    --good-bg: rgba(52, 201, 141, 0.14);
    --bad: #f0716b;
    --bad-bg: rgba(240, 113, 107, 0.13);

    --shadow: 0 26px 60px -30px rgba(0, 0, 0, 0.8);
    --shadow-sm: 0 14px 30px -20px rgba(0, 0, 0, 0.65);
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  color: var(--text);
  background: linear-gradient(175deg, var(--bg) 0%, var(--bg-2) 100%) fixed;
  min-height: 100vh;
}

/* --- фоновые «орбы» --- */
.bg-orn { position: fixed; inset: 0; overflow: hidden; pointer-events: none; z-index: 0; }
.orb { position: absolute; border-radius: 50%; filter: blur(90px); opacity: 0.35; }
.o1 { width: 46vw; height: 46vw; top: -14vw; right: -10vw; background: radial-gradient(circle, rgba(216, 84, 58, 0.5), transparent 65%); }
.o2 { width: 40vw; height: 40vw; bottom: -16vw; left: -12vw; background: radial-gradient(circle, rgba(58, 110, 165, 0.45), transparent 65%); }

.page {
  position: relative;
  z-index: 1;
  max-width: 760px;
  margin: 0 auto;
  padding: 18px 18px 56px;
}

.hidden { display: none !important; }

/* ============ CTA-баннер ============ */
.cta-banner {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--navy);
  color: #faf6f0;
  text-decoration: none;
  border-radius: var(--radius-sm);
  padding: 11px 16px;
  margin-bottom: 26px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
@media (prefers-color-scheme: dark) {
  .cta-banner { background: var(--surface-2); border: 1px solid var(--line); }
}
.cta-banner:hover { transform: translateY(-1px); box-shadow: var(--shadow); }
.cta-ico {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
}
.cta-content { display: flex; flex-direction: column; line-height: 1.3; }
.cta-content strong { font-size: 15px; font-weight: 700; }
.cta-sub { font-size: 12.5px; opacity: 0.75; }
.cta-arrow { margin-left: auto; font-size: 20px; opacity: 0.7; }

/* ============ Главная ============ */
.hero { text-align: center; margin: 6px 0 30px; }

.eyebrow {
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 10px;
}

.title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(30px, 6.4vw, 44px);
  line-height: 1.14;
  color: var(--text-strong);
  margin: 0 0 14px;
}
.title-accent { color: var(--accent); }

.subtitle {
  max-width: 560px;
  margin: 0 auto;
  color: var(--muted);
  font-size: 16px;
}

.grade-grid { display: grid; grid-template-columns: 1fr; gap: 14px; }
@media (min-width: 620px) { .grade-grid { grid-template-columns: 1fr 1fr; } }

.grade-card {
  --h: 20;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  text-align: left;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 18px 16px 22px;
  cursor: pointer;
  font: inherit;
  color: inherit;
  box-shadow: var(--shadow-sm);
  transition: transform 0.16s ease, box-shadow 0.16s ease, border-color 0.16s ease;
  overflow: hidden;
}
.grade-card::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 6px;
  background: hsl(var(--h) 62% 52%);
}
.grade-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  border-color: var(--line-strong);
}
.grade-card:focus-visible { outline: 3px solid hsl(var(--h) 62% 52%); outline-offset: 2px; }

.gc-top { display: flex; align-items: baseline; gap: 10px; }
.gc-grade {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 24px;
  color: var(--text-strong);
}
.gc-chip {
  margin-left: auto;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: hsl(var(--h) 58% 38%);
  background: hsl(var(--h) 60% 52% / 0.14);
  border-radius: 99px;
  padding: 4px 10px;
  white-space: nowrap;
}
@media (prefers-color-scheme: dark) {
  .gc-chip { color: hsl(var(--h) 70% 72%); }
}
.gc-topic { font-weight: 650; font-size: 15.5px; color: var(--text-strong); line-height: 1.35; }
.gc-desc { font-size: 13.5px; color: var(--muted); margin: 0; }
.gc-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 4px;
  font-size: 12.5px;
  color: var(--faint);
}
.gc-best { color: var(--good); font-weight: 650; }
.gc-go { margin-left: auto; color: var(--accent); font-weight: 700; font-size: 13px; }

/* ============ Закрытый класс (демо-версия) ============ */
.grade-card.locked {
  background: var(--surface-2);
  border-style: dashed;
  box-shadow: none;
}
.grade-card.locked .gc-grade,
.grade-card.locked .gc-topic { opacity: 0.6; }
.grade-card.locked .gc-desc { opacity: 0.5; }
.grade-card.locked .gc-best { color: var(--faint); font-weight: 600; }
.grade-card.locked .gc-go { color: var(--accent); }
.grade-card.locked:hover { transform: none; border-color: var(--accent); }
.gc-lock {
  color: #fff !important;
  background: var(--navy);
  padding: 2px 9px;
  border-radius: 999px;
  letter-spacing: 0.04em;
}

/* Плашка «это демо» над сеткой классов */
.demo-note {
  display: flex;
  align-items: center;
  gap: 13px;
  max-width: 640px;
  margin: 0 auto 22px;
  padding: 13px 17px;
  background: var(--accent-soft);
  border: 1px solid var(--line);
  border-radius: 15px;
  font-size: 14px;
  line-height: 1.5;
}
.demo-note p { margin: 0; }
.demo-note strong { color: var(--accent); font-weight: 700; }
.demo-note .info-ico { background: var(--navy); }

.foot { text-align: center; margin-top: 40px; color: var(--muted); font-size: 14px; }
.foot p { margin: 4px 0; }
.foot-sub { font-size: 12.5px; color: var(--faint); }
.foot-cta-line { font-size: 13.5px; color: var(--text); font-weight: 600; margin-top: 16px; }
.foot-sub-btn {
  display: inline-block;
  margin-top: 10px;
  padding: 8px 22px;
  background: var(--accent);
  color: #fff;
  border-radius: 999px;
  font-size: 13.5px;
  font-weight: 700;
  text-decoration: none;
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}
.foot-sub-btn:hover { transform: translateY(-1px); background: var(--accent-strong); box-shadow: var(--shadow); }

/* ============ Тест ============ */
.quiz-head { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.quiz-meta { display: flex; flex-direction: column; min-width: 0; }
.quiz-grade { font-weight: 750; font-size: 14px; color: var(--accent); }
.quiz-topic {
  font-size: 12.5px;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.progress {
  height: 8px;
  border-radius: 99px;
  background: var(--accent-soft);
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  width: 0%;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--accent), var(--accent-strong));
  transition: width 0.3s ease;
}
.counter { font-size: 13px; color: var(--faint); margin: 10px 2px 14px; }

.q-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 22px 20px 20px;
}
.q-text {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(19px, 3.6vw, 23px);
  line-height: 1.35;
  color: var(--text-strong);
  margin: 0 0 18px;
}

.opts { display: grid; gap: 10px; }
.opt {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  text-align: left;
  font: inherit;
  font-size: 15.5px;
  color: var(--text);
  background: var(--surface-2);
  border: 1.5px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 13px 14px;
  cursor: pointer;
  transition: border-color 0.14s ease, background 0.14s ease, transform 0.14s ease;
}
.opt:hover:not(:disabled) { border-color: var(--accent); transform: translateX(2px); }
.opt:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.opt:disabled { cursor: default; }
.opt-letter {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 28px; height: 28px;
  border-radius: 50%;
  font-size: 13px;
  font-weight: 750;
  color: var(--muted);
  background: var(--bg);
  border: 1px solid var(--line);
}
.opt.good {
  border-color: var(--good);
  background: var(--good-bg);
}
.opt.good .opt-letter { background: var(--good); border-color: var(--good); color: #fff; }
.opt.bad {
  border-color: var(--bad);
  background: var(--bad-bg);
}
.opt.bad .opt-letter { background: var(--bad); border-color: var(--bad); color: #fff; }
.opt.dim { opacity: 0.55; }

.explain {
  margin-top: 16px;
  border-left: 4px solid var(--accent);
  background: var(--accent-soft);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 12px 14px;
}
.explain.correct { border-left-color: var(--good); background: var(--good-bg); }
.explain-verdict { margin: 0 0 4px; font-weight: 750; font-size: 14.5px; }
.explain.correct .explain-verdict { color: var(--good); }
.explain:not(.correct) .explain-verdict { color: var(--bad); }
.explain-text { margin: 0; font-size: 14.5px; color: var(--text); }

.q-actions { display: flex; justify-content: flex-end; margin-top: 16px; min-height: 44px; }

/* ============ Кнопки ============ */
.btn {
  font: inherit;
  font-weight: 700;
  font-size: 15px;
  border-radius: var(--radius-sm);
  padding: 11px 20px;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: transform 0.14s ease, box-shadow 0.14s ease, background 0.14s ease;
}
.btn:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.btn.primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 10px 22px -12px rgba(216, 84, 58, 0.7);
}
.btn.primary:hover { background: var(--accent-strong); transform: translateY(-1px); }
.btn.ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--line-strong);
}
.btn.ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn.small { font-size: 13.5px; padding: 8px 13px; }

/* ============ Результат ============ */
.result-card {
  text-align: center;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 34px 22px 28px;
  margin-top: 8px;
}

.score-ring {
  --p: 0;
  width: 168px;
  height: 168px;
  margin: 18px auto 20px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: conic-gradient(var(--ring, var(--accent)) calc(var(--p) * 1%), var(--accent-soft) 0);
}
.score-inner {
  width: 132px;
  height: 132px;
  border-radius: 50%;
  background: var(--surface);
  display: grid;
  place-content: center;
  gap: 2px;
}
.score-num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 46px;
  line-height: 1;
  color: var(--text-strong);
}
.score-total { font-size: 14px; color: var(--faint); }

.verdict {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(22px, 4.6vw, 30px);
  margin: 0 0 8px;
  color: var(--text-strong);
}
.verdict-sub { color: var(--muted); margin: 0 0 22px; font-size: 15px; }

.result-actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.result-cta {
  display: inline-block;
  margin-top: 20px;
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
  font-size: 14.5px;
}
.result-cta:hover { text-decoration: underline; }

/* ============ Множественный выбор ============ */
.q-hint {
  margin: -2px 0 12px;
  padding: 8px 12px;
  background: var(--accent-soft);
  border-radius: 10px;
  font-size: 13.5px;
  color: var(--text);
  line-height: 1.45;
}
.q-hint strong { color: var(--accent); font-weight: 700; }

/* выбранный (но ещё не проверенный) вариант */
.opt.opt-multi.sel {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.opt.opt-multi.sel .opt-letter {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* ============ Инфо-заметки (главная) ============ */
.info-note {
  display: flex;
  align-items: center;
  gap: 13px;
  max-width: 640px;
  margin: 0 auto 14px;
  padding: 13px 17px;
  background: var(--accent-soft);
  border: 1px solid var(--line);
  border-radius: 15px;
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
}
.info-note:last-of-type { margin-bottom: 30px; }
.info-note p { margin: 0; }
.info-note strong { color: var(--accent); font-weight: 700; }
.info-ico {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 40px; height: 40px;
  border-radius: 12px;
  background: var(--accent);
  color: #fff;
  font-size: 22px;
}
.info-note--gramota .info-ico { background: var(--navy); }

/* ============ Грамота (экран результата) ============ */
.cert-block {
  margin-top: 22px;
  padding: 18px 16px;
  border: 1.5px dashed var(--line-strong);
  border-radius: 16px;
  background: var(--surface-2);
  text-align: left;
}
.cert-head { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 13px; }
.cert-ico { font-size: 26px; line-height: 1.1; flex: 0 0 auto; }
.cert-title { margin: 0; font-weight: 800; font-size: 16px; color: var(--text-strong); }
.cert-hint { margin: 3px 0 0; font-size: 13px; color: var(--muted); line-height: 1.45; }
.cert-name {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--line-strong);
  border-radius: 12px;
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-size: 15px;
  margin-bottom: 12px;
}
.cert-name::placeholder { color: var(--faint); }
.cert-name:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.cert-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.cert-actions .btn {
  flex: 1 1 160px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  text-decoration: none;
}

/* ============ Тост ============ */
.toast {
  position: fixed;
  left: 50%; bottom: 24px;
  transform: translateX(-50%) translateY(14px);
  background: var(--navy);
  color: #faf6f0;
  padding: 12px 20px;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 600;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.28s ease, transform 0.28s ease;
  z-index: 60;
  max-width: 92vw;
  text-align: center;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ============ Адаптив и прочее ============ */
@media (max-width: 480px) {
  .page { padding: 12px 12px 44px; }
  .q-card { padding: 18px 14px 16px; }
  .cta-banner { padding: 10px 12px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}