:root {
  --bg: #f3f5f8;
  --surface: #ffffff;
  --ink: #141a24;
  --ink-2: #4a5464;
  --ink-3: #727c8c;
  --line: #dde2ea;
  --accent: #2747d4;      /* твоя група */
  --accent-ink: #ffffff;
  --accent-soft: #e8ecfb;
  --ukraine: #c98200;     /* усі учні України */
  --oecd: #6b7480;        /* середнє ОЕСР */
  --track: #e7ebf1;
  --right: #0f7b3e; --right-bg: #e3f4ea;
  --warn: #a35a00; --warn-bg: #fdf0dc;
  --wrong: #b3261e; --wrong-bg: #fbe7e5;
  --display: "Unbounded", "Arial Black", system-ui, sans-serif;
  --body: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #10141b; --surface: #181e28; --ink: #eef1f6; --ink-2: #b8c0cc; --ink-3: #8b95a5;
    --line: #2a3240; --accent: #7b93ff; --accent-ink: #0b1020; --accent-soft: #1f2846; --ukraine: #f0b030; --oecd: #9aa3b0;
    --track: #252d3a; --warn: #f5b25a; --warn-bg: #3a2a14; --right: #6fd49a; --right-bg: #173426; --wrong: #ff8a80; --wrong-bg: #3a1c1a;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.55 var(--body); }
.page { max-width: 680px; margin: 0 auto; padding: 32px 16px 56px; display: flex; flex-direction: column; gap: 20px; }
[hidden] { display: none !important; }

h1, h2 { font-family: var(--display); font-weight: 700; margin: 0; text-wrap: balance; line-height: 1.15; }
h1 { font-size: clamp(28px, 7vw, 42px); }
h2 { font-size: 18px; font-weight: 500; }
h3 { font-size: 16px; margin: 0; }
p { margin: 0; }
a { color: var(--accent); }
.eyebrow { font-size: 13px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--ink-3); }
.lede { font-size: 18px; color: var(--ink-2); max-width: 60ch; }
.hero { display: flex; flex-direction: column; gap: 14px; padding-block: 8px 4px; }
.note { font-size: 15px; color: var(--ink-2); background: var(--accent-soft); border-radius: 10px; padding: 10px 14px; }
.hint { font-size: 14px; color: var(--ink-3); }

.card { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 22px 20px; }
.btn {
  font: 600 16px/1.2 var(--body); min-height: 48px; padding: 14px 22px; border-radius: 12px; border: 1.5px solid var(--line);
  background: var(--surface); color: var(--ink); cursor: pointer;
}
.btn.primary { background: var(--ink); color: var(--surface); border-color: var(--ink); align-self: flex-start; }
.btn:disabled { opacity: .35; cursor: not-allowed; }
.btn:focus-visible, .link-btn:focus-visible, .q-opt:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.link-btn { background: none; border: 0; padding: 4px 0; font: 500 15px var(--body); color: var(--ink-3); text-decoration: underline; cursor: pointer; align-self: flex-start; }

/* ---------- Частина 2: тест ---------- */
.quiz { display: flex; flex-direction: column; gap: 12px; }
.q-card { display: flex; flex-direction: column; gap: 14px; }
.q-stim { display: flex; flex-direction: column; gap: 8px; color: var(--ink-2); }
.q-img { max-width: 100%; height: auto; border-radius: 8px; border: 1px solid var(--line); }
.q-todo { font-size: 14px; color: var(--ink-3); border: 1.5px dashed var(--line); border-radius: 10px; padding: 10px 12px; }
.q-question { font-weight: 600; }
.q-opts { display: flex; flex-direction: column; gap: 8px; }
.q-opt {
  display: flex; gap: 12px; align-items: flex-start; text-align: left; width: 100%;
  font: 16px/1.45 var(--body); color: var(--ink); background: var(--surface);
  border: 1.5px solid var(--line); border-radius: 12px; padding: 12px 14px; cursor: pointer;
}
.q-opt b { flex: none; width: 22px; color: var(--ink-3); }
.q-opt:hover:not(:disabled) { border-color: var(--accent); }
.q-opt:disabled { cursor: default; }
.q-opt.right { border-color: var(--right); background: var(--right-bg); }
.q-opt.right b { color: var(--right); }
.q-opt.wrong { border-color: var(--wrong); background: var(--wrong-bg); }
.q-opt.wrong b { color: var(--wrong); }
.q-num { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.q-num input {
  font: 500 17px/1.3 var(--body); color: var(--ink); background: var(--surface);
  width: 10em; max-width: 100%; min-height: 48px; padding: 10px 14px; border: 1.5px solid var(--line); border-radius: 12px;
}
.q-num input:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.q-num input.right { border-color: var(--right); background: var(--right-bg); }
.q-num input.wrong { border-color: var(--wrong); background: var(--wrong-bg); }
.q-unit { font-weight: 600; color: var(--ink-2); }
.q-num .btn.primary { align-self: auto; }
.q-num-hint { flex-basis: 100%; color: var(--wrong); }
.q-feedback { display: flex; flex-direction: column; gap: 10px; }
.q-feedback:empty { display: none; }
.q-stat { font-weight: 500; }
.q-src { font-size: 13px; color: var(--ink-3); }
.q-list { margin: 0; padding-left: 20px; }

/* ---------- Частина 1: форма ---------- */
.form { display: flex; flex-direction: column; gap: 22px; }
fieldset { border: 0; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
legend { font-weight: 600; margin-bottom: 10px; padding: 0; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips label { position: relative; }
.chips input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.chips span {
  display: inline-flex; align-items: center; min-height: 44px; padding: 8px 18px; border: 1.5px solid var(--line); border-radius: 999px;
  font-weight: 500; color: var(--ink-2); background: var(--surface); cursor: pointer; transition: all .15s ease;
}
.chips input:checked + span { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.chips input:focus-visible + span { outline: 3px solid var(--accent); outline-offset: 2px; }
.chips label:hover span { border-color: var(--ink-3); }

details.explain { font-size: 15px; color: var(--ink-2); }
details.explain summary { cursor: pointer; font-weight: 600; color: var(--accent); min-height: 44px; display: flex; align-items: center; list-style-position: inside; }
details.explain summary:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 6px; }
details.explain p { padding: 4px 0 2px; max-width: 60ch; }

/* Помічник «Визнач свій рівень» */
.escs-helper { border: 1px solid var(--line); border-radius: 12px; padding: 4px 14px 14px; }
.escs-helper[open] { background: var(--bg); }
.escs-helper > .hint { margin-bottom: 12px; }
.escs-questions { display: flex; flex-direction: column; gap: 16px; }
.escs-q { display: flex; flex-direction: column; gap: 8px; }
.escs-q-label { font-weight: 600; color: var(--ink); font-size: 15px; }
.chips-sm { gap: 6px; }
.chips-sm span { padding: 6px 13px; font-size: 15px; }
.escs-q select {
  font: 500 15px/1.3 var(--body); color: var(--ink); background: var(--surface); width: 100%;
  min-height: 44px; padding: 10px 12px; border: 1.5px solid var(--line); border-radius: 12px;
}
.escs-q select:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.escs-estimate { margin-top: 16px; display: flex; flex-direction: column; gap: 6px; }
.escs-result { padding: 12px 14px; border-radius: 10px; background: var(--accent-soft); color: var(--ink); }
.escs-result b { font-weight: 600; }

/* ---------- Результат ---------- */
.result { display: flex; flex-direction: column; gap: 16px; }
.main-result { display: flex; flex-direction: column; gap: 14px; }
.big { font-family: var(--display); font-size: clamp(56px, 18vw, 88px); font-weight: 700; line-height: 1; color: var(--accent); display: flex; align-items: baseline; flex-wrap: wrap; gap: 4px 14px; }
.big .range { font-family: var(--body); font-size: 18px; font-weight: 500; color: var(--ink-3); }
.sentence { font-size: 18px; }
.diff { font-weight: 500; color: var(--ink-2); }
.quiz-link { font-size: 15px; color: var(--ink-2); border-top: 1px solid var(--line); padding-top: 12px; }

.scale { margin: 6px 0 0; display: flex; flex-direction: column; gap: 6px; }
.scale-plot { position: relative; }
.lanes { position: relative; }
.lanes-top { margin-bottom: 8px; }
.lanes-bottom { margin-top: 8px; }
.lbl { position: absolute; white-space: nowrap; font-size: 14px; line-height: 22px; color: var(--ink-2); display: inline-flex; align-items: center; gap: 6px; }
.lbl b { color: var(--ink); font-variant-numeric: tabular-nums; }
.lbl i { width: 10px; height: 10px; flex: none; }
.track { position: relative; height: 12px; background: var(--track); border-radius: 999px; }
.band { position: absolute; top: 0; bottom: 0; background: var(--accent); opacity: .28; border-radius: 999px; }
.ticks { display: flex; justify-content: space-between; font-size: 12px; color: var(--ink-3); margin-top: 6px; }
.marker { position: absolute; top: 50%; width: 18px; height: 18px; transform: translate(-50%, -50%); border: 2.5px solid var(--surface); box-shadow: 0 0 0 1px var(--ink-3); }
/* Форми позначок: інформація не тримається лише на кольорі */
.s-circle { background: var(--accent); border-radius: 50%; }
.marker.s-circle { z-index: 2; width: 20px; height: 20px; }
.s-diamond { background: var(--ukraine); }
.marker.s-diamond { transform: translate(-50%, -50%) rotate(45deg); width: 15px; height: 15px; }
.lbl i.s-diamond { transform: rotate(45deg); width: 9px; height: 9px; }
.s-square { background: var(--oecd); }
.data-note { font-size: 13px; color: var(--ink-3); }
.big .no-data, #res-pct.no-data { font-size: clamp(32px, 9vw, 44px); color: var(--ink-2); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

.block { display: flex; flex-direction: column; gap: 12px; }
.years { display: flex; flex-direction: column; gap: 14px; }
.gap { display: flex; flex-direction: column; gap: 4px; }
/* ---------- Частина 3: «Що це означає» ---------- */
.meaning { display: flex; flex-direction: column; gap: 16px; }
.icon-badge { flex: none; width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; background: var(--accent-soft); color: var(--accent); }
.mini { font-size: 13px; font-weight: 600; letter-spacing: .04em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 2px; }
.mean-def { display: flex; gap: 14px; align-items: flex-start; }
.mean-group { display: grid; grid-template-columns: auto 1fr; gap: 18px; align-items: center; padding: 16px; border-radius: 12px; background: var(--bg); }
.dots { display: grid; grid-template-columns: repeat(10, 12px); gap: 4px; }
.dots i { width: 12px; height: 12px; border-radius: 50%; background: var(--track); box-shadow: inset 0 0 0 1px var(--line); }
.dots i.on { background: var(--accent); box-shadow: none; }
.mean-side { display: flex; flex-direction: column; gap: 8px; align-items: flex-start; }
.dots-cap { font-size: 15px; color: var(--ink-2); }
.dots-cap b { font-family: var(--display); font-size: 30px; color: var(--accent); margin-right: 4px; }
.status { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 600; padding: 5px 12px; border-radius: 999px; }
.status::before { font-weight: 700; }
.st-above { background: var(--accent-soft); color: var(--accent); }
.st-above::before { content: "↑"; }
.st-about { background: var(--track); color: var(--ink-2); }
.st-about::before { content: "≈"; }
.st-below { background: var(--warn-bg); color: var(--warn); }
.st-below::before { content: "↓"; }
.caution { display: flex; gap: 10px; align-items: flex-start; font-size: 15px; color: var(--ink-2); padding: 12px 14px; border-radius: 10px; border: 1px dashed var(--line); }
.caution svg { flex: none; width: 20px; height: 20px; color: var(--ink-3); margin-top: 1px; }
@media (max-width: 480px) {
  .mean-group { grid-template-columns: 1fr; justify-items: start; }
}

/* ---------- Частина 4: «Що з цим робити» ---------- */
.solutions { display: flex; flex-direction: column; gap: 12px; }
.solution { display: flex; flex-direction: column; gap: 10px; padding: 16px; border-radius: 12px; background: var(--bg); }
.sol-head { display: flex; gap: 12px; align-items: center; }
.sol-head h3 { font-size: 17px; }
.sol-why { font-size: 13px; font-weight: 600; color: var(--accent); }
.aud { list-style: none; margin: 4px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.aud li { font-size: 13px; font-weight: 500; padding: 3px 10px; border-radius: 999px; border: 1px solid var(--line); background: var(--surface); color: var(--ink-2); }
.aud li::before { content: ""; display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 6px; vertical-align: 1px; }
.aud-student::before { background: var(--accent); }
.aud-parents::before { background: var(--ukraine); }
.aud-school::before { background: var(--oecd); }
.aud-state::before { background: var(--warn); }
.solution .src { font-size: 13px; }
.solution .todo { color: var(--wrong); font-family: ui-monospace, Menlo, monospace; }
.limits ul { margin: 0; padding-left: 20px; color: var(--ink-2); display: flex; flex-direction: column; gap: 4px; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.share .actions .btn { flex: 1 1 200px; }
.share-status { min-height: 1.4em; font-size: 15px; color: var(--ink-2); }
.share-status[data-error="true"] { color: var(--wrong); }
.footer { font-size: 13px; color: var(--ink-3); padding-top: 12px; border-top: 1px solid var(--line); display: flex; flex-direction: column; gap: 8px; }

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