:root {
  --bg: #f3f4f6;
  --surface: #ffffff;
  --surface-2: #f8f9fb;
  --text: #1c2430;
  --muted: #5f6b7a;
  --border: #dde2e8;
  --primary: #1d5fa6;
  --primary-hover: #174f8c;
  --primary-soft: #e6eff9;
  --on-primary: #ffffff;
  --ok: #1f8a4c;
  --ok-soft: #e3f4ea;
  --bad: #c0392b;
  --bad-soft: #fbe9e7;
  --warn: #a86a00;
  --warn-soft: #fdf2dc;
  --focus: #f0a020;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(20, 30, 45, .06), 0 4px 16px rgba(20, 30, 45, .06);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12161c;
    --surface: #1b2129;
    --surface-2: #222a33;
    --text: #e6eaef;
    --muted: #9aa6b4;
    --border: #2f3843;
    --primary: #5b9be0;
    --primary-hover: #74abe6;
    --primary-soft: #1f3247;
    --on-primary: #0d1620;
    --ok: #4cc07c;
    --ok-soft: #173326;
    --bad: #f07063;
    --bad-soft: #3a1f1c;
    --warn: #e7a93a;
    --warn-soft: #3a2e17;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 4px 16px rgba(0, 0, 0, .25);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

html, body { margin: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

[hidden] { display: none !important; }

h1, h2, h3 { line-height: 1.25; margin: 0 0 .5em; }
h1 { font-size: 1.6rem; }
h2 { font-size: 1.3rem; }
h3 { font-size: 1.05rem; }
p { margin: 0 0 .8em; }
a { color: var(--primary); }

:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }

.muted { color: var(--muted); }
.small { font-size: .875rem; }
.nowrap { white-space: nowrap; }
.num { font-variant-numeric: tabular-nums; }

/* ── шапка ── */

.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.topbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.topbar-inner.compact { max-width: 760px; flex-wrap: nowrap; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 600; min-width: 0; }
.brand-mark {
  width: 32px; height: 32px; border-radius: 8px;
  background: var(--primary); color: var(--on-primary);
  display: grid; place-items: center; font-weight: 700; font-size: .9rem;
}
.brand small { display: block; font-weight: 400; color: var(--muted); font-size: .8rem; }
.topbar .spacer { flex: 1; }

.page { max-width: 760px; margin: 0 auto; padding: 24px 16px 48px; }
.page-wide { max-width: 1200px; }

/* ── карточки и формы ── */

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
}
.card + .card { margin-top: 16px; }

.field { display: block; margin-bottom: 16px; }
.field span { display: block; font-weight: 600; margin-bottom: 6px; font-size: .95rem; }
.field small { display: block; color: var(--muted); margin-top: 4px; }
input[type=text], input[type=password], input[type=search], input[type=email], select {
  width: 100%;
  font: inherit;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
}
input:focus, select:focus { border-color: var(--primary); outline: none; box-shadow: 0 0 0 3px var(--primary-soft); }

.btn {
  font: inherit;
  font-weight: 600;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 10px 18px;
  cursor: pointer;
  background: var(--surface-2);
  color: var(--text);
  border-color: var(--border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-decoration: none;
  white-space: nowrap;
}
.btn:hover { background: var(--border); }
.btn:disabled { opacity: .55; cursor: default; }
.btn-primary { background: var(--primary); color: var(--on-primary); border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-hover); }
.btn-danger { color: var(--bad); }
.btn-danger:hover { background: var(--bad-soft); }
.btn-link { background: none; border: none; color: var(--primary); padding: 6px 4px; }
.btn-link:hover { background: none; text-decoration: underline; }
.btn-sm { padding: 6px 12px; font-size: .875rem; }
.btn-block { width: 100%; }

.actions { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; margin-top: 8px; }

.alert {
  border-radius: 8px;
  padding: 10px 14px;
  margin-bottom: 16px;
  background: var(--bad-soft);
  color: var(--bad);
  border: 1px solid color-mix(in srgb, var(--bad) 30%, transparent);
}
.alert-warn { background: var(--warn-soft); color: var(--warn); border-color: color-mix(in srgb, var(--warn) 30%, transparent); }
.alert-info { background: var(--primary-soft); color: var(--text); border-color: color-mix(in srgb, var(--primary) 25%, transparent); }

.badge {
  display: inline-block;
  font-size: .8rem;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary);
}
.badge-ok { background: var(--ok-soft); color: var(--ok); }
.badge-warn { background: var(--warn-soft); color: var(--warn); }
.badge-muted { background: var(--surface-2); color: var(--muted); border: 1px solid var(--border); }

.rules { padding-left: 1.2em; margin: 0 0 1em; }
.rules li { margin-bottom: 6px; }
.steps { padding-left: 1.4em; margin: 0 0 1em; }
.steps li { margin-bottom: 6px; }

/* ── вход и регистрация ── */

.auth-card { max-width: 460px; margin: 16px auto 0; }
.auth-links { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-top: 16px; font-size: .95rem; }
.field span .muted { display: inline; font-weight: 400; margin: 0; }
.consent { margin: 4px 0 18px; }
.consent span { font-size: .95rem; }
/* поле-ловушка для ботов: не видно ни глазами, ни экранным чтецом */
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }

/* ── обучение ── */

.sound-note {
  display: flex; gap: 12px; align-items: flex-start;
  background: var(--primary-soft); border: 1px solid color-mix(in srgb, var(--primary) 25%, transparent);
  border-radius: 8px; padding: 12px 14px; margin: 4px 0 8px;
}
.sound-note svg { width: 28px; height: 28px; flex: none; color: var(--primary); }
.lesson-progress { display: flex; align-items: center; gap: 12px; margin: 16px 0 4px; }
.lesson-progress .progress { flex: 1; margin: 0; height: 8px; }
.lessons-list { margin-top: 18px; }
.lessons-list summary { cursor: pointer; font-weight: 600; color: var(--primary); margin-bottom: 10px; }
.lessons-list td:first-child { width: 60%; }

/* ── тест ── */

.test-head { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 12px; }
.test-head .counter { font-weight: 600; }
.test-head .spacer { flex: 1; }

.progress { height: 6px; background: var(--border); border-radius: 999px; overflow: hidden; margin-bottom: 16px; }
.progress > div { height: 100%; background: var(--primary); width: 0; transition: width .25s; }

.question-text { font-size: 1.3rem; font-weight: 600; margin: 8px 0 20px; }

.options { display: grid; gap: 10px; }
.option {
  font: inherit;
  text-align: left;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  width: 100%;
  padding: 14px 16px;
  border-radius: 10px;
  border: 2px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  transition: border-color .12s, background .12s;
}
.option:hover { border-color: color-mix(in srgb, var(--primary) 50%, var(--border)); }
.option .key {
  flex: none;
  width: 28px; height: 28px;
  border-radius: 50%;
  border: 2px solid var(--border);
  display: grid; place-items: center;
  font-weight: 700; font-size: .85rem;
  color: var(--muted);
}
.option.selected { border-color: var(--primary); background: var(--primary-soft); }
.option.selected .key { background: var(--primary); border-color: var(--primary); color: var(--on-primary); }
.option-unknown { border-style: dashed; color: var(--muted); }
.option-unknown.selected { border-style: solid; border-color: var(--muted); background: var(--surface-2); color: var(--text); }
.option-unknown.selected .key { background: var(--muted); border-color: var(--muted); }
.options .divider { height: 4px; }

.test-nav { display: flex; gap: 12px; margin-top: 20px; align-items: center; }
.test-nav .spacer { flex: 1; }
.save-state { font-size: .85rem; color: var(--muted); min-height: 1.3em; margin-top: 12px; }
.save-state.bad { color: var(--warn); }

.kbd-hint { margin-top: 10px; font-size: .8rem; color: var(--muted); }
@media (hover: none) { .kbd-hint { display: none; } }

.grid-map { display: grid; grid-template-columns: repeat(auto-fill, minmax(44px, 1fr)); gap: 8px; margin: 16px 0; }
.grid-map button {
  font: inherit; font-weight: 600;
  aspect-ratio: 1;
  border-radius: 8px;
  border: 2px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  cursor: pointer;
}
.grid-map button.answered { background: var(--primary-soft); border-color: var(--primary); color: var(--primary); }
.grid-map button.unknown { background: var(--surface-2); border-style: dashed; border-color: var(--muted); color: var(--text); }
.grid-map button.current { outline: 3px solid var(--focus); outline-offset: 1px; }

.legend { display: flex; gap: 16px; flex-wrap: wrap; font-size: .85rem; color: var(--muted); }
.legend i { display: inline-block; width: 14px; height: 14px; border-radius: 4px; border: 2px solid var(--border); vertical-align: -2px; margin-right: 6px; }
.legend .l-answered { background: var(--primary-soft); border-color: var(--primary); }
.legend .l-unknown { background: var(--surface-2); border-style: dashed; border-color: var(--muted); }

.tally { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 12px 0 4px; }
.tally div { background: var(--surface-2); border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; }
.tally b { display: block; font-size: 1.4rem; }
.tally span { font-size: .85rem; color: var(--muted); }

/* ── анкета ── */

.survey-section { border: none; padding: 0; margin: 20px 0 0; min-width: 0; }
.survey-section legend { font-size: 1.15rem; font-weight: 700; padding: 0; margin-bottom: 4px; }
.survey-item { padding: 14px 0; border-bottom: 1px solid var(--border); scroll-margin: 80px; }
.survey-section .survey-item:last-child { border-bottom: none; }
.survey-q { font-weight: 600; margin: 0 0 10px; }
.survey-num { color: var(--muted); margin-right: 6px; font-variant-numeric: tabular-nums; }
.survey-item.missing .survey-q { color: var(--bad); }
.survey-item.missing .survey-q::after { content: " — нужен ответ"; font-weight: 400; font-size: .85rem; }

.scale { display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px; }
.scale.choice { grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); }
.scale button {
  font: inherit;
  font-size: .85rem;
  line-height: 1.25;
  padding: 10px 8px;
  border-radius: 8px;
  border: 2px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  text-align: center;
}
.scale button:hover { border-color: color-mix(in srgb, var(--primary) 50%, var(--border)); }
.scale button.selected { border-color: var(--primary); background: var(--primary-soft); font-weight: 600; }
.survey-item.missing .scale button:not(.selected) { border-color: color-mix(in srgb, var(--bad) 40%, var(--border)); }

.checks { columns: 2 280px; column-gap: 16px; }
.check { display: flex; gap: 10px; align-items: flex-start; cursor: pointer; padding: 5px 0; font-size: .95rem; break-inside: avoid; }
.check input { width: 18px; height: 18px; margin: 2px 0 0; accent-color: var(--primary); flex: none; }

.number-field { display: flex; align-items: center; gap: 8px; }
.number-field input { width: 110px; }
input[type=number], textarea {
  font: inherit;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
}
textarea { width: 100%; resize: vertical; min-height: 76px; }
input[type=number]:focus, textarea:focus { border-color: var(--primary); outline: none; box-shadow: 0 0 0 3px var(--primary-soft); }

.survey-submit {
  position: sticky;
  bottom: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 14px 0 4px;
  margin-top: 8px;
  background: var(--surface);
  border-top: 1px solid var(--border);
}

@media (max-width: 600px) {
  .scale { grid-template-columns: 1fr; }
  .scale button { text-align: left; padding: 10px 12px; }
}

/* ── результат ── */

.result-icon {
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--ok-soft); color: var(--ok);
  display: grid; place-items: center;
  margin-bottom: 12px;
}
.result-icon svg { width: 30px; height: 30px; }
.scores { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; margin: 16px 0; }
.score-box { border: 1px solid var(--border); border-radius: 10px; padding: 14px 16px; background: var(--surface-2); }
.score-box .label { font-size: .85rem; color: var(--muted); }
.score-box .value { font-size: 1.8rem; font-weight: 700; line-height: 1.2; }
.score-box .value small { font-size: 1rem; font-weight: 500; color: var(--muted); }
.score-box.highlight { border-color: var(--ok); background: var(--ok-soft); }
.delta-up { color: var(--ok); font-weight: 700; }
.delta-down { color: var(--bad); font-weight: 700; }

/* ── панель инструктора ── */

.nav-tabs { display: flex; gap: 4px; flex-wrap: wrap; }
.nav-tabs a {
  text-decoration: none;
  color: var(--muted);
  font-weight: 600;
  padding: 8px 12px;
  border-radius: 8px;
}
.nav-tabs a:hover { background: var(--surface-2); color: var(--text); }
.nav-tabs a.active { background: var(--primary-soft); color: var(--primary); }

.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin-bottom: 16px; }
.tile { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; }
.tile .label { font-size: .85rem; color: var(--muted); }
.tile .value { font-size: 1.6rem; font-weight: 700; }

.toolbar { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin-bottom: 12px; }
.toolbar input[type=search] { max-width: 320px; }
.toolbar select { width: auto; }
.toolbar .spacer { flex: 1; }

.table-wrap { overflow-x: auto; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 10px 12px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--border); }
th { font-size: .8rem; text-transform: uppercase; letter-spacing: .03em; color: var(--muted); background: var(--surface-2); font-weight: 600; white-space: nowrap; }
tbody tr:last-child td { border-bottom: none; }
tr.clickable { cursor: pointer; }
tr.clickable:hover td { background: var(--surface-2); }
td .sub { display: block; font-size: .8rem; color: var(--muted); }
.empty { padding: 32px; text-align: center; color: var(--muted); }

.mark { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; }
.mark-ok { color: var(--ok); }
.mark-bad { color: var(--bad); }
.mark-none { color: var(--muted); font-weight: 400; }
.answer-text { display: block; font-size: .82rem; color: var(--muted); font-weight: 400; max-width: 280px; }
.correct-text { display: block; font-size: .82rem; color: var(--ok); margin-top: 2px; }

.bar { position: relative; height: 8px; background: var(--border); border-radius: 999px; overflow: hidden; min-width: 90px; margin-top: 4px; }
.bar > div { position: absolute; inset: 0 auto 0 0; background: var(--muted); border-radius: 999px; }
.bar.post > div { background: var(--primary); }
.bar.ok > div { background: var(--ok); }

.attempts { margin-top: 8px; font-size: .9rem; }
.attempts summary { cursor: pointer; color: var(--primary); }
.attempts ul { margin: 6px 0 0; padding-left: 1.1em; }
.results-log summary { cursor: pointer; font-weight: 600; font-size: 1.05rem; color: var(--primary); margin-bottom: 10px; }
.inline-form { display: flex; gap: 10px; max-width: 460px; }
code.pw { font-size: 1.05rem; background: var(--surface); padding: 2px 8px; border-radius: 6px; border: 1px solid var(--border); user-select: all; }

/* шкалы анкеты: расходящаяся (согласие) и порядковая (опыт) */
:root {
  --lk1: #b8302f; --lk2: #ec8a86; --lk3: #dcdbd6; --lk4: #74aaf0; --lk5: #1f63b8;
  --sq1: #cde2fb; --sq2: #9ec5f4; --sq3: #6da7ec; --sq4: #2a78d6; --sq5: #184f95;
}
@media (prefers-color-scheme: dark) {
  :root {
    --lk1: #f08a88; --lk2: #9a3532; --lk3: #8a8a83; --lk4: #2a62ad; --lk5: #8ab9f3;
    --sq1: #1f3b5f; --sq2: #24528a; --sq3: #2f6fc0; --sq4: #5598e7; --sq5: #9ec5f4;
  }
}
.lk1 { background: var(--lk1); } .lk2 { background: var(--lk2); } .lk3 { background: var(--lk3); }
.lk4 { background: var(--lk4); } .lk5 { background: var(--lk5); }
.sq1 { background: var(--sq1); } .sq2 { background: var(--sq2); } .sq3 { background: var(--sq3); }
.sq4 { background: var(--sq4); } .sq5 { background: var(--sq5); }

.likert { position: relative; height: 18px; margin: 3px 0; min-width: 240px; }
.likert .lk { position: absolute; top: 0; bottom: 0; box-shadow: inset -2px 0 0 var(--surface); }
.likert .lk.first { border-top-left-radius: 4px; border-bottom-left-radius: 4px; }
.likert .lk.last { border-top-right-radius: 4px; border-bottom-right-radius: 4px; box-shadow: none; }
.likert-mid { position: absolute; left: 50%; top: -3px; bottom: -3px; width: 1px; background: var(--muted); opacity: .6; }
.likert-legend, .stack-legend { display: flex; flex-wrap: wrap; gap: 4px 14px; font-size: .82rem; color: var(--muted); }
.likert-legend { margin: -4px 0 10px; }
.likert-legend i, .stack-legend i { display: inline-block; width: 12px; height: 12px; border-radius: 3px; vertical-align: -1px; margin-right: 6px; }

.stack { display: flex; height: 16px; border-radius: 4px; overflow: hidden; gap: 2px; margin: 3px 0 8px; }
.stack div { min-width: 2px; }

tr.group-row th { background: var(--surface); color: var(--text); font-size: .95rem; text-transform: none; letter-spacing: 0; padding-top: 16px; white-space: normal; }

.lesson-counts { display: grid; gap: 6px; }
.lesson-counts > div { display: grid; grid-template-columns: minmax(0, 1fr) minmax(80px, 30%) 32px; gap: 12px; align-items: center; font-size: .9rem; }
.lesson-counts .bar { margin: 0; }
.lesson-counts b { text-align: right; }

.free-text { white-space: pre-wrap; }
.opinions h3 { margin-bottom: 12px; }
.opinions blockquote { margin: 0; padding: 10px 0 10px 14px; border-left: 3px solid var(--border); }
.opinions blockquote + blockquote { margin-top: 8px; }
.opinions blockquote p { margin: 0 0 4px; }

.detail-head { display: flex; gap: 16px; flex-wrap: wrap; align-items: flex-start; margin-bottom: 16px; }
.detail-head .spacer { flex: 1; }
.section-title { margin: 28px 0 12px; }

.stage-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 12px; }

.switch { display: flex; gap: 12px; align-items: flex-start; cursor: pointer; }
.switch input { width: 20px; height: 20px; margin-top: 2px; flex: none; accent-color: var(--primary); }

dialog {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  padding: 24px;
  width: min(460px, calc(100vw - 32px));
  box-shadow: var(--shadow);
}
dialog::backdrop { background: rgba(10, 15, 25, .45); }

@media (max-width: 600px) {
  .card { padding: 18px; }
  h1 { font-size: 1.35rem; }
  .question-text { font-size: 1.15rem; }
  .tally b { font-size: 1.2rem; }
  .hide-sm { display: none; }
}

@media print {
  body { background: #fff; color: #000; }
  .topbar, .no-print, .toolbar, .actions { display: none !important; }
  .card, .table-wrap, .tile { box-shadow: none; border-color: #bbb; }
  .page { padding: 0; max-width: none; }
}