:root{
  --accent-1:#34d399;
  --accent-2:#facc15;
  --accent-3:#38bdf8;
  --danger:#f43f5e;
  --bg:#050a08;
  --card:rgba(255,255,255,.045);
  --card-strong:rgba(255,255,255,.08);
  --stroke:rgba(255,255,255,.1);
  --stroke-strong:rgba(255,255,255,.18);
  --text:#f0f4f1;
  --muted:#9aa8a0;
  --font-body:"Inter",system-ui,-apple-system,sans-serif;
  --font-display:"Unbounded","Inter",sans-serif;
  --radius:20px;
  --ease:cubic-bezier(.22,1,.36,1);
}

*,*::before,*::after{box-sizing:border-box}

html{scroll-behavior:smooth}

body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.6;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3{margin:0;font-family:var(--font-display);line-height:1.1;letter-spacing:-.02em}
p{margin:0}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
a{text-decoration:none;color:inherit}
ul{margin:0;padding:0;list-style:none}

/* ---------- Фон с летящими символами ---------- */
.bg-symbols{
  position:fixed;
  inset:0;
  width:100%;
  height:100%;
  z-index:0;
  pointer-events:none;
  opacity:.55;
}

/* ---------- Контейнер ---------- */
.container{
  width:100%;
  max-width:680px;
  margin:0 auto;
  padding:0 20px;
}
.container--game{max-width:560px}

/* ---------- Шапка ---------- */
.header{
  position:relative;
  z-index:2;
  padding:16px 0;
}
.header__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.logo{
  display:flex;
  align-items:center;
  gap:10px;
}
.logo__mark{
  display:grid;
  place-items:center;
  width:36px;height:36px;
  border-radius:11px;
  background:linear-gradient(135deg,var(--accent-1),var(--accent-2));
  color:#060a08;
  box-shadow:0 6px 24px -6px rgba(52,211,153,.6);
}
.logo__mark svg{width:22px;height:22px}
.logo__text{
  font-family:var(--font-display);
  font-weight:800;
  font-size:1.05rem;
  letter-spacing:.05em;
}
.header__best{
  display:flex;
  align-items:center;
  gap:12px;
  line-height:1.2;
}
.header__best-label{
  font-size:.66rem;
  color:var(--muted);
  text-transform:uppercase;
  letter-spacing:.14em;
}
.header__best-value{
  font-family:var(--font-display);
  font-weight:700;
  font-size:1.1rem;
  color:var(--accent-2);
}
.sound-btn{
  display:grid;
  place-items:center;
  width:36px;height:36px;
  border-radius:11px;
  background:var(--card);
  border:1px solid var(--stroke);
  color:var(--muted);
  transition:all .25s var(--ease);
}
.sound-btn svg{width:18px;height:18px}
.sound-btn:hover{
  color:var(--text);
  border-color:var(--stroke-strong);
  transform:translateY(-2px);
}
.sound-btn .icon-off{display:none}
.sound-btn.is-muted .icon-on{display:none}
.sound-btn.is-muted .icon-off{display:block}

/* ---------- Main / экраны ---------- */
.main{
  position:relative;
  z-index:1;
  padding:24px 0 60px;
  min-height:calc(100vh - 120px);
  display:flex;
  align-items:flex-start;
}
.screen{
  display:none;
  width:100%;
  animation:screenIn .5s var(--ease);
}
.screen.is-active{display:block}
@keyframes screenIn{
  from{opacity:0;transform:translateY(18px) scale(.985)}
  to{opacity:1;transform:none}
}

/* ---------- Общие карточки ---------- */
.start-card,
.over-card{
  border-radius:24px;
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid var(--stroke-strong);
  padding:34px 28px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:0 30px 80px -40px rgba(0,0,0,.9),inset 0 1px 0 rgba(255,255,255,.08);
}
.eyebrow{
  display:inline-block;
  font-size:.72rem;
  color:var(--accent-1);
  text-transform:uppercase;
  letter-spacing:.18em;
  font-weight:700;
  margin-bottom:14px;
}
.title{
  font-size:clamp(1.9rem,6vw,2.9rem);
  font-weight:800;
  margin-bottom:14px;
}
.gradient-text{
  background:linear-gradient(100deg,var(--accent-1),var(--accent-2) 60%,var(--accent-3));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.subtitle{
  color:var(--muted);
  font-size:.96rem;
  margin-bottom:26px;
}

/* ---------- Селекторы ---------- */
.selector{margin-bottom:22px}
.selector__label{
  display:block;
  font-size:.7rem;
  color:var(--muted);
  text-transform:uppercase;
  letter-spacing:.14em;
  margin-bottom:10px;
}
.selector__row{
  display:flex;
  flex-wrap:wrap;
  gap:9px;
}
.pill{
  padding:9px 16px;
  border-radius:99px;
  background:var(--card);
  border:1px solid var(--stroke);
  color:var(--muted);
  font-size:.85rem;
  font-weight:600;
  transition:all .25s var(--ease);
}
.pill:hover{
  color:var(--text);
  border-color:var(--stroke-strong);
  transform:translateY(-2px);
}
.pill.is-active{
  color:#060a08;
  border-color:transparent;
  background:linear-gradient(120deg,var(--accent-1),var(--accent-2));
  box-shadow:0 8px 26px -10px rgba(52,211,153,.8);
}

/* ---------- Кнопки ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  border-radius:14px;
  font-weight:700;
  font-size:.98rem;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .3s var(--ease);
}
.btn--lg{padding:15px 26px;font-size:1.04rem}
.btn--block{width:100%}
.btn--primary{
  color:#060a08;
  background:linear-gradient(120deg,var(--accent-1),var(--accent-2));
  box-shadow:0 14px 40px -14px rgba(52,211,153,.9);
}
.btn--primary:hover{
  transform:translateY(-3px);
  box-shadow:0 20px 50px -14px rgba(52,211,153,1);
}
.btn--primary:active{transform:translateY(-1px) scale(.985)}
.btn--ghost{
  color:var(--text);
  background:var(--card);
  border:1px solid var(--stroke);
}
.btn--ghost:hover{
  transform:translateY(-3px);
  border-color:var(--stroke-strong);
  background:var(--card-strong);
}

/* ---------- Подсказки ---------- */
.tips{
  margin-top:22px;
  padding-top:20px;
  border-top:1px solid var(--stroke);
  display:flex;
  flex-direction:column;
  gap:8px;
}
.tips li{
  color:var(--muted);
  font-size:.86rem;
  padding-left:20px;
  position:relative;
}
.tips li::before{
  content:"▸";
  position:absolute;
  left:0;
  color:var(--accent-1);
}
.tips b{color:var(--text);font-weight:700}

/* ---------- HUD ---------- */
.hud{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:10px;
  margin-bottom:18px;
}
.hud__cell{
  border-radius:14px;
  background:var(--card);
  border:1px solid var(--stroke);
  padding:11px 8px;
  text-align:center;
  line-height:1.25;
}
.hud__label{
  display:block;
  font-size:.62rem;
  color:var(--muted);
  text-transform:uppercase;
  letter-spacing:.1em;
}
.hud__value{
  display:block;
  font-family:var(--font-display);
  font-weight:700;
  font-size:1.12rem;
  color:var(--accent-1);
  transition:transform .3s var(--ease),color .3s var(--ease);
}
.hud__value.bump{transform:scale(1.3)}
.hud__lives{
  display:block;
  font-family:var(--font-display);
  font-size:1.05rem;
  letter-spacing:.18em;
  color:var(--danger);
}
.hud__lives .lost{color:rgba(255,255,255,.14)}

/* ---------- Таймер ---------- */
.timer{
  height:8px;
  border-radius:99px;
  background:rgba(255,255,255,.07);
  overflow:hidden;
  border:1px solid var(--stroke);
}
.timer__fill{
  height:100%;
  width:100%;
  border-radius:99px;
  background:linear-gradient(90deg,var(--accent-1),var(--accent-2));
  transition:width .1s linear,background .4s var(--ease);
  will-change:width;
}
.timer.is-low .timer__fill{background:linear-gradient(90deg,var(--danger),#fb923c)}
.timer__text{
  text-align:center;
  font-size:.74rem;
  color:var(--muted);
  margin-top:7px;
  font-variant-numeric:tabular-nums;
}
.timer.is-low .timer__text{color:var(--danger);font-weight:700}

/* ---------- Вопрос и варианты ---------- */
.question{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(2.2rem,9vw,3.4rem);
  text-align:center;
  letter-spacing:.01em;
  margin:22px 0 26px;
  min-height:1.2em;
  transition:transform .3s var(--ease),opacity .25s var(--ease);
}
.question.swap{opacity:0;transform:translateY(10px) scale(.97)}
.question .q-mark{color:var(--accent-2)}

.options{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:11px;
}
.option{
  position:relative;
  padding:19px 12px;
  border-radius:16px;
  background:var(--card-strong);
  border:1px solid var(--stroke);
  font-family:var(--font-display);
  font-weight:700;
  font-size:1.35rem;
  color:var(--text);
  transition:transform .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease),opacity .3s var(--ease);
  overflow:hidden;
}
.option::before{
  content:attr(data-key);
  position:absolute;
  top:8px;
  left:11px;
  font-family:var(--font-body);
  font-size:.62rem;
  font-weight:700;
  color:var(--muted);
  letter-spacing:.06em;
}
.option:hover:not(:disabled){
  transform:translateY(-3px);
  border-color:var(--accent-1);
  background:rgba(52,211,153,.1);
}
.option:disabled{cursor:default}
.option.is-correct{
  border-color:var(--accent-1);
  background:rgba(52,211,153,.18);
  color:var(--accent-1);
  animation:pop .45s var(--ease);
}
.option.is-wrong{
  border-color:var(--danger);
  background:rgba(244,63,94,.16);
  color:var(--danger);
  animation:shake .4s ease;
}
@keyframes pop{
  0%{transform:scale(1)}
  45%{transform:scale(1.09)}
  100%{transform:scale(1)}
}
@keyframes shake{
  0%,100%{transform:translateX(0)}
  20%{transform:translateX(-8px)}
  40%{transform:translateX(7px)}
  60%{transform:translateX(-5px)}
  80%{transform:translateX(3px)}
}
.options.locked .option{opacity:.5}
.options.locked .option.is-correct,
.options.locked .option.is-wrong{opacity:1}

/* ---------- Фидбек ---------- */
.feedback{
  text-align:center;
  font-weight:600;
  font-size:.95rem;
  min-height:1.5em;
  margin-top:18px;
  color:var(--muted);
  transition:color .25s var(--ease);
}
.feedback.ok{color:var(--accent-1)}
.feedback.bad{color:var(--danger)}

/* ---------- Финальный экран ---------- */
.final-score{
  text-align:center;
  margin:8px 0 24px;
}
.final-score__label{
  display:block;
  font-size:.7rem;
  color:var(--muted);
  text-transform:uppercase;
  letter-spacing:.16em;
  margin-bottom:6px;
}
.final-score__value{
  display:block;
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(2.6rem,11vw,4rem);
  line-height:1;
  background:linear-gradient(100deg,var(--accent-1),var(--accent-2) 60%,var(--accent-3));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.final-score__record{
  display:block;
  margin-top:10px;
  font-size:.86rem;
  color:var(--accent-2);
  font-weight:600;
  min-height:1.3em;
}
.stats{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:10px;
  margin-bottom:24px;
}
.stat{
  border-radius:14px;
  background:var(--card);
  border:1px solid var(--stroke);
  padding:13px 10px;
  text-align:center;
}
.stat__label{
  display:block;
  font-size:.65rem;
  color:var(--muted);
  text-transform:uppercase;
  letter-spacing:.1em;
}
.stat__value{
  display:block;
  font-family:var(--font-display);
  font-weight:700;
  font-size:1.25rem;
  color:var(--text);
}
.over-actions{
  display:flex;
  gap:11px;
  flex-wrap:wrap;
}
.over-actions .btn{flex:1;min-width:140px}

/* ---------- Футер ---------- */
.footer{
  position:relative;
  z-index:1;
  border-top:1px solid var(--stroke);
  padding:20px 0;
}
.footer__copy{
  display:block;
  text-align:center;
  color:var(--muted);
  font-size:.8rem;
}

/* ---------- Всплывающие очки ---------- */
.float-points{
  position:fixed;
  z-index:50;
  font-family:var(--font-display);
  font-weight:800;
  font-size:1.5rem;
  color:var(--accent-1);
  pointer-events:none;
  animation:floatUp 1s var(--ease) forwards;
  text-shadow:0 4px 18px rgba(52,211,153,.6);
}
@keyframes floatUp{
  from{opacity:1;transform:translateY(0) scale(.8)}
  20%{transform:translateY(-14px) scale(1.1)}
  to{opacity:0;transform:translateY(-64px) scale(1)}
}
.float-points.bad{color:var(--danger);text-shadow:0 4px 18px rgba(244,63,94,.6)}

/* ---------- Баннер уровня ---------- */
.level-banner{
  position:fixed;
  z-index:60;
  top:38%;
  left:50%;
  transform:translate(-50%,-50%);
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(1.6rem,7vw,2.6rem);
  letter-spacing:.05em;
  color:var(--accent-2);
  pointer-events:none;
  animation:bannerIn 1.3s var(--ease) forwards;
  text-shadow:0 6px 30px rgba(250,204,21,.55);
}
@keyframes bannerIn{
  0%{opacity:0;transform:translate(-50%,-50%) scale(.6)}
  25%{opacity:1;transform:translate(-50%,-50%) scale(1.08)}
  70%{opacity:1;transform:translate(-50%,-50%) scale(1)}
  100%{opacity:0;transform:translate(-50%,-50%) scale(1.15)}
}

/* ---------- Адаптив ---------- */
@media (max-width:560px){
  .start-card,.over-card{padding:26px 18px}
  .hud{grid-template-columns:repeat(2,1fr)}
  .options{grid-template-columns:1fr 1fr;gap:9px}
  .option{padding:16px 8px;font-size:1.15rem}
  .over-actions .btn{min-width:0;width:100%}
  .header__best-label{display:none}
  .question{margin:16px 0 20px}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
}