/* ===== НейроМиша · /vs · страница-вызов ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
/* hidden обязан скрывать даже элементы с display-override (.btn/.badge/.options/.numeric) */
[hidden]{display:none!important}
:root{
  --brand:#DF995B;
  --brand-ink:#B36E30;
  --brand-deep:#8C5422;
  --brand-soft:#F6D9B8;
  --sec:#496F82;
  --bg:#FCEDD0;
  --bg-warm:#F9E4BE;
  --surface:#FFFDF8;
  --ink:#1F2937;
  --ink-2:#4B5563;
  --ink-3:#6B7280;
  --good:#10B981;
  --good-ink:#0F7A5B;
  --bad:#DA5A3B;
  --bad-ink:#B23F26;
  --gold:#F59E0B;
  --radius-card:22px;
  --radius-btn:16px;
  --shadow:0 4px 24px rgba(120,80,40,.10);
  --shadow-hover:0 10px 34px rgba(120,80,40,.18);
  --shadow-lg:0 18px 50px rgba(120,80,40,.20);
  --font-head:'Unbounded',sans-serif;
  --font-body:'Manrope',system-ui,sans-serif;
  --ease:cubic-bezier(.16,1,.3,1);
}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-body);
  background:var(--bg);
  color:var(--ink);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  min-height:100vh;
  min-height:100dvh;
  display:flex;
  flex-direction:column;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
button{font-family:inherit}

/* animated background blob */
body::before{
  content:'';position:fixed;
  width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,var(--brand) 0%,transparent 70%);
  opacity:.14;top:-160px;right:-160px;
  pointer-events:none;z-index:0;
  animation:drift 20s ease-in-out infinite alternate;
}
@keyframes drift{0%{transform:translate(0,0) scale(1)}100%{transform:translate(-30px,24px) scale(1.08)}}

/* ===== NAV ===== */
.nav{
  position:sticky;top:0;z-index:100;
  display:flex;align-items:center;gap:12px;
  padding:12px 20px;
  background:rgba(252,237,208,.86);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(223,153,91,.14);
}
.brand{display:flex;align-items:center;gap:9px;font-family:var(--font-head);font-weight:700;font-size:1.05rem}
.brand-mark{width:34px;height:34px;border-radius:10px;overflow:hidden;flex-shrink:0}
.brand-mark img{width:100%;height:100%;object-fit:cover}
.nav-spacer{flex:1}
.nav-link{font-size:.9rem;font-weight:600;color:var(--ink-2);padding:7px 14px;border-radius:var(--radius-btn);transition:background .2s,color .2s}
.nav-link:hover{background:rgba(223,153,91,.14);color:var(--ink)}

/* ===== LAYOUT ===== */
.wrap{position:relative;z-index:1;width:100%;max-width:600px;margin:0 auto;padding:0 20px;flex:1}
.screen{padding:28px 0 44px;animation:screenIn .45s var(--ease) both}
@keyframes screenIn{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}

/* ===== BUTTONS ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 24px;border-radius:var(--radius-btn);
  font-family:var(--font-body);font-size:1rem;font-weight:700;
  border:2px solid transparent;cursor:pointer;width:100%;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s,background .18s;
}
.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.btn:active{transform:translateY(0)}
.btn:focus-visible{outline:3px solid rgba(73,111,130,.5);outline-offset:2px}
.btn-lg{padding:16px 26px;font-size:1.06rem;font-weight:800}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-ink)}
.btn-ghost{background:transparent;color:var(--ink);border-color:rgba(223,153,91,.35)}
.btn-ghost:hover{border-color:var(--brand);background:rgba(223,153,91,.06)}
.btn-gold{background:linear-gradient(135deg,var(--gold),var(--brand));color:#fff}
.cta-row,.cta-stack{margin-top:22px}
.cta-stack{display:grid;gap:12px}

/* ===== HERO ===== */
.hero{text-align:center;padding-top:20px}
.hero-glow{
  position:absolute;left:50%;top:60px;transform:translateX(-50%);
  width:min(420px,86vw);height:280px;border-radius:50%;
  background:radial-gradient(ellipse at center,rgba(223,153,91,.30),transparent 70%);
  filter:blur(8px);pointer-events:none;z-index:-1;
}
.mascot{
  width:200px;height:200px;object-fit:contain;margin:0 auto 6px;
  filter:drop-shadow(0 10px 22px rgba(140,84,34,.22));
  animation:float 4.5s ease-in-out infinite;
}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
.badge{
  display:inline-block;font-family:var(--font-head);
  font-size:11px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;
  padding:7px 16px;border-radius:100px;margin-bottom:14px;
}
.badge-invite{
  background:rgba(16,185,129,.12);color:var(--good-ink);
  border:1px solid rgba(16,185,129,.3);
}
.eyebrow{
  font-family:var(--font-head);font-weight:700;font-size:.78rem;
  letter-spacing:.08em;text-transform:uppercase;color:var(--brand-ink);
  margin-bottom:10px;
}
.hero-title{
  font-family:var(--font-head);font-weight:800;
  font-size:clamp(1.6rem,6.4vw,2.4rem);line-height:1.18;letter-spacing:-.02em;
  color:var(--brand-deep);margin-bottom:14px;text-wrap:balance;
}
.hero-title .hl{
  background:linear-gradient(135deg,var(--brand),var(--gold));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.hero-sub{font-size:1.06rem;color:var(--ink-2);max-width:440px;margin:0 auto}
.hero-foot-note{margin-top:16px;font-size:.86rem;color:var(--ink-3)}

/* subject picker */
.picker{margin-top:24px}
.picker-label{font-weight:700;font-size:.92rem;color:var(--ink-2);margin-bottom:12px}
.chips{display:flex;flex-wrap:wrap;gap:9px;justify-content:center}
.chip{
  padding:10px 16px;border-radius:100px;
  background:var(--surface);border:2px solid rgba(223,153,91,.28);
  font-weight:700;font-size:.9rem;color:var(--ink-2);cursor:pointer;
  transition:transform .15s var(--ease),border-color .18s,background .18s,color .18s;
}
.chip:hover{transform:translateY(-2px);border-color:var(--brand)}
.chip[aria-pressed="true"]{background:var(--brand);border-color:var(--brand);color:#fff}
.chip:focus-visible{outline:3px solid rgba(73,111,130,.5);outline-offset:2px}

/* ===== QUIZ ===== */
.q-head{margin-bottom:18px}
.q-progress{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.q-count{font-family:var(--font-head);font-weight:700;font-size:.9rem;color:var(--brand-deep)}
.q-diff{
  font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;
  padding:3px 10px;border-radius:100px;background:rgba(73,111,130,.12);color:var(--sec);
}
.q-dots{display:flex;gap:7px}
.q-dot{flex:1;height:6px;border-radius:100px;background:rgba(140,84,34,.14);transition:background .35s var(--ease)}
.q-dot.done{background:var(--brand)}
.q-dot.current{background:var(--brand-soft)}

.q-card{
  background:var(--surface);border-radius:var(--radius-card);
  box-shadow:var(--shadow);padding:26px 22px;
  border:1px solid rgba(223,153,91,.1);
}
.q-text{font-family:var(--font-head);font-weight:600;font-size:1.18rem;line-height:1.4;color:var(--ink);margin-bottom:20px;text-wrap:pretty}

/* options */
.options{display:grid;gap:10px}
.opt{
  display:flex;align-items:center;gap:13px;width:100%;text-align:left;
  padding:14px 16px;border-radius:14px;
  background:var(--bg);border:2px solid rgba(223,153,91,.2);
  font-size:1rem;font-weight:600;color:var(--ink);cursor:pointer;
  transition:transform .14s var(--ease),border-color .16s,background .16s;
}
.opt:hover:not([disabled]){transform:translateY(-1px);border-color:var(--brand)}
.opt:focus-visible{outline:3px solid rgba(73,111,130,.5);outline-offset:2px}
.opt[disabled]{cursor:default}
.opt-letter{
  flex-shrink:0;width:30px;height:30px;display:grid;place-items:center;
  border-radius:9px;background:rgba(223,153,91,.16);color:var(--brand-deep);
  font-family:var(--font-head);font-weight:700;font-size:.9rem;
}
.opt-text{flex:1}
.opt.correct{border-color:var(--good);background:rgba(16,185,129,.1)}
.opt.correct .opt-letter{background:var(--good);color:#fff}
.opt.incorrect{border-color:var(--bad);background:rgba(218,90,59,.09)}
.opt.incorrect .opt-letter{background:var(--bad);color:#fff}
.opt.muted{opacity:.55}

/* numeric */
.numeric{display:grid;gap:12px}
.numeric-label{font-weight:700;font-size:.9rem;color:var(--ink-2)}
.numeric-input{
  width:100%;padding:15px 18px;border-radius:14px;
  border:2px solid rgba(223,153,91,.28);background:var(--bg);
  font-family:var(--font-head);font-weight:700;font-size:1.3rem;color:var(--ink);
  text-align:center;transition:border-color .16s,background .16s;
}
.numeric-input:focus{outline:none;border-color:var(--brand);background:var(--surface)}
.numeric-input.correct{border-color:var(--good);background:rgba(16,185,129,.1)}
.numeric-input.incorrect{border-color:var(--bad);background:rgba(218,90,59,.09)}

/* feedback */
.feedback{margin-top:18px;padding-top:16px;border-top:1px dashed rgba(140,84,34,.18);animation:fadeUp .3s var(--ease) both}
@keyframes fadeUp{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.feedback-verdict{font-family:var(--font-head);font-weight:700;font-size:1.02rem;margin-bottom:6px}
.feedback-verdict.ok{color:var(--good-ink)}
.feedback-verdict.no{color:var(--bad-ink)}
.feedback-expl{font-size:.94rem;color:var(--ink-2);line-height:1.55}

/* ===== RESULT ===== */
.result{text-align:center}
.mascot-sm{width:150px;height:150px;margin-bottom:2px}
.score-ring{
  width:150px;height:150px;margin:6px auto 20px;border-radius:50%;
  display:grid;place-items:center;position:relative;
  background:
    radial-gradient(closest-side,var(--surface) 79%,transparent 80% 100%),
    conic-gradient(var(--brand) var(--ring,0%),rgba(223,153,91,.16) 0);
  box-shadow:var(--shadow);
}
.score-big{font-family:var(--font-head);font-weight:800;font-size:3.2rem;line-height:1;color:var(--brand-deep)}
.score-of{font-weight:700;font-size:.9rem;color:var(--ink-3);margin-top:2px}
.result-frame-title{font-family:var(--font-head);font-weight:800;font-size:clamp(1.4rem,5.4vw,1.9rem);line-height:1.2;color:var(--brand-deep);margin-bottom:10px;text-wrap:balance}
.result-frame-text{font-size:1.04rem;color:var(--ink-2);max-width:440px;margin:0 auto}

/* compare */
.compare{
  margin:24px auto 0;max-width:380px;
  background:var(--surface);border-radius:18px;box-shadow:var(--shadow);
  border:1px solid rgba(223,153,91,.1);overflow:hidden;
}
.compare-row{display:flex;justify-content:space-between;align-items:center;padding:14px 20px}
.compare-row+.compare-row{border-top:1px solid rgba(140,84,34,.1)}
.compare-you{background:rgba(223,153,91,.09)}
.compare-name{font-weight:700;color:var(--ink-2)}
.compare-you .compare-name{color:var(--brand-deep)}
.compare-val{font-family:var(--font-head);font-weight:800;font-size:1.15rem;color:var(--ink)}
.compare-you .compare-val{color:var(--brand-deep)}
.friend-note{margin:18px auto 0;max-width:420px;font-size:.95rem;color:var(--ink-2);background:rgba(73,111,130,.08);border-radius:14px;padding:14px 18px}

.share-opt{display:inline-flex;align-items:center;gap:8px;margin-top:16px;font-size:.9rem;color:var(--ink-2);cursor:pointer;user-select:none}
.share-opt input{width:18px;height:18px;accent-color:var(--brand)}
.retry-link{
  display:block;margin:22px auto 0;background:none;border:none;cursor:pointer;
  color:var(--sec);font-weight:700;font-size:.94rem;
  border-bottom:1px solid rgba(73,111,130,.35);padding-bottom:1px;
}
.retry-link:hover{color:var(--brand-deep)}

/* prereg */
.prereg{margin-top:34px}
.prereg-inner{
  background:linear-gradient(160deg,var(--bg-warm),var(--surface));
  border:1px solid rgba(245,158,11,.28);
  border-radius:var(--radius-card);box-shadow:var(--shadow);
  padding:26px 22px;text-align:center;
}
.prereg-title{font-family:var(--font-head);font-weight:800;font-size:1.2rem;color:var(--brand-deep);margin-bottom:8px}
.prereg-text{font-size:.98rem;color:var(--ink-2);max-width:400px;margin:0 auto 16px}
.prereg-consent{margin-top:14px;font-size:.78rem;color:var(--ink-3);line-height:1.5}
.prereg-consent a{color:var(--brand-ink);font-weight:600;text-decoration:underline}

/* ===== ERROR ===== */
.error{text-align:center}

/* ===== TOAST ===== */
.vs-toast{
  position:fixed;left:50%;bottom:24px;transform:translate(-50%,20px);
  z-index:99995;max-width:88vw;
  background:#241E17;color:#F5EDE0;
  font-weight:700;font-size:.9rem;
  padding:12px 20px;border-radius:100px;
  box-shadow:var(--shadow-lg);
  opacity:0;pointer-events:none;
  transition:opacity .25s var(--ease),transform .25s var(--ease);
}
.vs-toast.on{opacity:1;transform:translate(-50%,0)}

@media(max-width:600px){
  .nav{padding:11px 16px}
  .wrap{padding:0 16px}
  .hero .mascot{width:168px;height:168px}
  .q-card{padding:22px 18px}
}

@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  .mascot{animation:none}
}