/* navchu.online — єШкола · MVP v1 (2026-07-10)
   Токени: паперово-теплий фон, бренд-червоний акцент, «діагностична нитка» як сигнатура */
:root{
  --ink:#1a1512;
  --ink-soft:#4a423b;
  --muted:#6b635b;
  --paper:#ffffff;
  --warm:#f7f4f0;
  --line:#e8e2da;
  --red:#d50100;
  --red-deep:#aa0000;
  --red-tint:#fdf0ef;
  --ok:#1e7d43;
  --r:14px;
  --shadow:0 1px 2px rgba(26,21,18,.05),0 8px 24px -12px rgba(26,21,18,.12);
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{
  font-family:'Inter',system-ui,-apple-system,sans-serif;
  color:var(--ink);background:var(--paper);
  font-size:16px;line-height:1.55;
}
.display{font-family:'Unbounded',sans-serif;font-weight:600;line-height:1.18;letter-spacing:-.01em}
img{max-width:100%}
a{color:inherit}
button{font:inherit;cursor:pointer;border:0;background:none}

.wrap{max-width:680px;margin:0 auto;padding:0 20px}

/* ---------- header ---------- */
.hdr{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.hdr .wrap{display:flex;align-items:center;justify-content:space-between;height:56px}
.logo{font-family:'Unbounded',sans-serif;font-weight:700;font-size:19px;text-decoration:none}
.logo b{color:var(--red)}
.hdr-phone{font-size:13px;font-weight:600;text-decoration:none;color:var(--ink-soft)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--red);color:#fff;font-weight:700;font-size:16px;
  padding:15px 24px;border-radius:12px;text-decoration:none;width:100%;
  transition:background .15s, transform .1s}
.btn:hover{background:var(--red-deep)}
.btn:active{transform:scale(.985)}
.btn:focus-visible{outline:3px solid var(--red);outline-offset:2px}
.btn.ghost{background:transparent;color:var(--ink);border:1.5px solid var(--ink);font-weight:600}
.btn.ghost:hover{background:var(--warm)}
.btn.on-dark{background:#fff;color:var(--ink)}
.btn.on-dark:hover{background:var(--warm)}
@media(min-width:560px){.btn{width:auto}}

/* ---------- hero ---------- */
.hero{padding:44px 0 28px}
.hero h1{font-size:clamp(25px,6.2vw,38px);margin-bottom:14px}
.hero h1 .accent{color:var(--red)}
.hero .sub{color:var(--ink-soft);font-size:17px;max-width:56ch}
.hero .org{margin-top:14px;font-size:13.5px;color:var(--muted)}

/* ---------- gates (двоє воріт) ---------- */
.gates{display:grid;gap:14px;margin:26px 0 10px}
@media(min-width:640px){.gates{grid-template-columns:1fr 1fr}}
.gate{display:block;border-radius:var(--r);padding:22px 20px;text-decoration:none;box-shadow:var(--shadow);
  transition:transform .12s, box-shadow .12s;position:relative;overflow:hidden}
.gate:hover{transform:translateY(-2px)}
.gate:focus-visible{outline:3px solid var(--red);outline-offset:2px}
.gate .tag{font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;opacity:.65}
.gate h2{font-size:20px;margin:8px 0 6px;font-family:'Unbounded',sans-serif;font-weight:600;line-height:1.25}
.gate p{font-size:14.5px;opacity:.85}
.gate .go{display:inline-block;margin-top:14px;font-weight:700;font-size:15px}
.gate .go::after{content:" →"}
.gate-parent{background:var(--red-tint);border:1.5px solid #f3d4d2;color:var(--ink)}
.gate-parent .go{color:var(--red)}
.gate-tutor{background:var(--ink);color:#fff}
.gate-tutor .go{color:#ffb3b0}
.trustline{margin:16px 0 8px;font-size:13px;color:var(--muted);line-height:1.6}

/* ---------- sections ---------- */
section{padding:38px 0}
section.alt{background:var(--warm)}
.sec-h{font-size:clamp(21px,5vw,27px);margin-bottom:22px}
.sec-note{color:var(--muted);font-size:14px;margin-top:16px;font-style:italic}

/* «діагностична нитка» — сигнатура: кроки, зʼєднані червоною лінією */
.thread{list-style:none;position:relative}
.thread li{position:relative;padding:0 0 26px 46px}
.thread li:last-child{padding-bottom:0}
.thread li::before{ /* лінія */
  content:"";position:absolute;left:14px;top:26px;bottom:-4px;width:2px;background:var(--red);opacity:.35}
.thread li:last-child::before{display:none}
.thread .dot{position:absolute;left:0;top:0;width:30px;height:30px;border-radius:50%;
  background:var(--paper);border:2px solid var(--red);color:var(--red);
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:14px}
.thread h3{font-size:17px;margin-bottom:4px}
.thread p{color:var(--ink-soft);font-size:15px}

/* not-catalog callout */
.callout{border-left:4px solid var(--red);background:var(--paper);border-radius:0 var(--r) var(--r) 0;
  padding:20px 20px;box-shadow:var(--shadow)}
.callout p{margin-bottom:10px;font-size:15.5px}
.callout p:last-child{margin-bottom:0}
.callout .lead{font-weight:700}

/* ---------- calculator ---------- */
.calc{background:var(--paper);border:1.5px solid var(--line);border-radius:var(--r);padding:22px 20px;box-shadow:var(--shadow)}
.seg{display:grid;grid-template-columns:1fr 1fr;background:var(--warm);border-radius:11px;padding:4px;gap:4px;margin-bottom:18px}
.seg button{padding:10px 8px;border-radius:8px;font-size:13.5px;font-weight:600;color:var(--muted);line-height:1.3;transition:all .15s}
.seg button[aria-pressed="true"]{background:var(--ink);color:#fff}
.slider-row{margin:6px 0 4px}
.slider-row label{display:flex;justify-content:space-between;font-size:14px;font-weight:600;margin-bottom:10px}
.slider-row output{color:var(--red);font-weight:800}
input[type=range]{width:100%;accent-color:var(--red);height:32px}
.calc-out{margin-top:14px;text-align:center}
.calc-out .sum{font-family:'Unbounded',sans-serif;font-weight:700;font-size:clamp(30px,8vw,40px);color:var(--ink)}
.calc-out .sum small{font-size:.45em;font-weight:600;color:var(--muted)}
.calc-fine{margin-top:10px;font-size:13px;color:var(--muted);text-align:center;line-height:1.5}
.calc .btn{margin-top:18px}

/* ---------- stories ---------- */
.story{background:var(--paper);border:1.5px solid var(--line);border-radius:var(--r);padding:18px;margin-bottom:12px}
.story p{font-size:15px;color:var(--ink-soft)}
.story .who{margin-top:10px;font-size:13px;font-weight:700;color:var(--ink)}

/* ---------- trust ---------- */
.trust-grid{display:grid;gap:12px}
@media(min-width:560px){.trust-grid{grid-template-columns:1fr 1fr}}
.trust-card{background:var(--paper);border:1.5px solid var(--line);border-radius:var(--r);padding:16px}
.trust-card h3{font-size:15.5px;margin-bottom:4px}
.trust-card p{font-size:14px;color:var(--muted)}

/* ---------- faq ---------- */
details{border-bottom:1px solid var(--line)}
details summary{padding:16px 28px 16px 0;font-weight:600;font-size:15.5px;cursor:pointer;list-style:none;position:relative}
details summary::-webkit-details-marker{display:none}
details summary::after{content:"+";position:absolute;right:4px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--red);transition:transform .2s}
details[open] summary::after{transform:translateY(-50%) rotate(45deg)}
details .a{padding:0 0 16px;color:var(--ink-soft);font-size:15px}

/* ---------- footer ---------- */
footer{background:var(--ink);color:#cfc8c2;padding:34px 0;font-size:14px}
footer a{color:#fff;text-decoration:none}
footer .cols{display:grid;gap:18px}
@media(min-width:560px){footer .cols{grid-template-columns:1fr 1fr}}
footer .brand{font-family:'Unbounded',sans-serif;color:#fff;font-size:17px;margin-bottom:8px}
footer ul{list-style:none}
footer li{margin-bottom:8px}
.legal{margin-top:22px;font-size:12px;color:#8d857e}

/* ============ QUIZ ============ */
.quiz-shell{max-width:560px;margin:0 auto;padding:18px 20px 56px;min-height:calc(100vh - 56px);display:flex;flex-direction:column}
.qbar{height:6px;background:var(--warm);border-radius:99px;margin:10px 0 26px;overflow:hidden}
.qbar i{display:block;height:100%;background:var(--red);border-radius:99px;transition:width .35s ease;width:0}
.qstep{animation:qin .3s ease}
@keyframes qin{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
@media(prefers-reduced-motion:reduce){.qstep{animation:none}.qbar i{transition:none}}
.qstep h2{font-size:clamp(20px,5.6vw,26px);margin-bottom:8px;font-family:'Unbounded',sans-serif;font-weight:600;line-height:1.3}
.qstep .qsub{color:var(--ink-soft);font-size:15px;margin-bottom:20px}
.cards{display:grid;gap:10px}
.qcard{display:flex;align-items:flex-start;gap:12px;text-align:left;background:var(--paper);
  border:1.5px solid var(--line);border-radius:12px;padding:15px 16px;font-size:15.5px;font-weight:500;
  transition:border-color .12s, background .12s}
.qcard:hover{border-color:var(--red)}
.qcard:focus-visible{outline:3px solid var(--red);outline-offset:2px}
.qcard.sel{border-color:var(--red);background:var(--red-tint)}
.qcard .em{font-size:20px;line-height:1.2}
.qgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(92px,1fr));gap:10px}
.qgrid .qcard{justify-content:center;text-align:center;font-weight:600}
.qnext{margin-top:22px}
.qback{margin-top:14px;font-size:14px;color:var(--muted);text-decoration:underline;align-self:flex-start}
.micro{margin-top:18px;background:var(--warm);border-radius:12px;padding:14px 16px;font-size:14.5px;color:var(--ink-soft);animation:qin .3s ease}

/* processing */
.proc{text-align:center;padding:60px 0}
.proc .ring{width:52px;height:52px;border-radius:50%;border:4px solid var(--line);border-top-color:var(--red);
  margin:0 auto 24px;animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
@media(prefers-reduced-motion:reduce){.proc .ring{animation-duration:2.5s}}
.proc p{font-size:15.5px;color:var(--ink-soft);min-height:48px}

/* insight */
.insight{background:var(--red-tint);border:1.5px solid #f3d4d2;border-radius:var(--r);padding:22px 20px;margin-bottom:18px}
.insight .kicker{font-size:12px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--red);margin-bottom:10px}
.insight p{font-size:16px;line-height:1.6}
.insight .plan{margin-top:14px;padding-top:14px;border-top:1px dashed #e5b8b5;font-size:15px;color:var(--ink-soft)}
.insight .plan b{color:var(--ink)}

/* form */
.f-field{margin-bottom:14px}
.f-field label{display:block;font-size:13.5px;font-weight:600;margin-bottom:6px}
.f-field input,.f-field select,.f-field textarea{width:100%;padding:13px 14px;font:inherit;font-size:16px;
  border:1.5px solid var(--line);border-radius:11px;background:var(--paper)}
.f-field input:focus,.f-field select:focus,.f-field textarea:focus{outline:none;border-color:var(--red)}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{border:1.5px solid var(--line);border-radius:99px;padding:9px 15px;font-size:14px;font-weight:500;transition:all .12s}
.chip.sel{background:var(--ink);color:#fff;border-color:var(--ink)}
.sla{margin:12px 0;font-size:13.5px;color:var(--ok);font-weight:600}
.f-err{color:var(--red);font-size:14px;margin-top:10px;display:none}

/* status tracker — та сама нитка */
.status-hero{text-align:center;padding:26px 0 8px}
.status-hero .big{font-size:44px}
.status-hero h2{font-family:'Unbounded',sans-serif;font-size:22px;margin:10px 0 6px}
.status-hero p{color:var(--ink-soft);font-size:15px}
.tracker{margin:26px 0}
.tracker .thread .dot.done{background:var(--red);color:#fff}
.tracker .thread .dot.wait{border-style:dashed;opacity:.55}
.share-row{margin-top:20px}

/* ============ TUTOR page ============ */
.dark-hero{background:var(--ink);color:#fff;padding:44px 0 34px}
.dark-hero h1{font-size:clamp(24px,6vw,34px);margin-bottom:12px}
.dark-hero .sub{color:#d8d1cb;font-size:16.5px;max-width:58ch}
.benefit{display:flex;gap:12px;padding:13px 0;border-bottom:1px solid var(--line);font-size:15px}
.benefit:last-child{border-bottom:0}
.benefit .ic{color:var(--red);font-weight:800;flex-shrink:0}
.notice{font-size:13px;color:var(--muted);margin-top:14px}