:root {
  --bg: #f5f6fb;
  --card: #ffffff;
  --ink: #1e2235;
  --ink-2: #5a6072;
  --ink-3: #9aa0b4;
  --accent: #6c5ce7;
  --accent-dark: #5747d1;
  --accent-soft: #eeebff;
  --teal: #00a98f;
  --teal-soft: #e2f7f2;
  --amber: #f0a020;
  --amber-soft: #fdf3e0;
  --rose: #e55c7a;
  --rose-soft: #fdeaef;
  --line: #e7e9f2;
  --radius: 18px;
  --shadow: 0 4px 20px rgba(30, 34, 53, 0.06);
  --sidebar-w: 250px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 6px; }

html { -webkit-text-size-adjust: 100%; }

body {
  font-family: "Manrope", -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
}

.app { min-height: 100vh; }

/* ---------- Sidebar (desktop) ---------- */
.sidebar {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: var(--sidebar-w);
  background: var(--card);
  border-right: 1px solid var(--line);
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  z-index: 20;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  padding: 4px 10px 20px;
}
.brand-logo {
  width: 40px; height: 40px; border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--teal));
  display: grid; place-items: center;
  font-size: 20px; color: #fff;
  flex: none;
}
.brand-name { font-weight: 800; font-size: 16px; line-height: 1.2; }
.brand-name small { display: block; font-weight: 600; font-size: 11px; color: var(--ink-3); }

.nav-item {
  display: flex; align-items: center; gap: 12px;
  padding: 11px 12px;
  border-radius: 12px;
  color: var(--ink-2);
  text-decoration: none;
  font-weight: 600; font-size: 14.5px;
  transition: background .15s, color .15s;
}
.nav-item:hover { background: var(--bg); color: var(--ink); }
.nav-item.active { background: var(--accent-soft); color: var(--accent-dark); }
.nav-item .ico { font-size: 18px; width: 24px; text-align: center; }

.sidebar-foot { margin-top: auto; padding: 12px 10px; font-size: 12px; color: var(--ink-3); }

/* ---------- Main ---------- */
.main {
  margin-left: var(--sidebar-w);
  padding: 32px 40px 80px;
  max-width: 980px;
}

h1.page-title { font-size: 28px; font-weight: 800; margin-bottom: 6px; letter-spacing: -0.5px; }
.page-sub { color: var(--ink-2); margin-bottom: 28px; font-size: 15px; max-width: 640px; }

.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
  margin-bottom: 18px;
}

/* ---------- Dashboard ---------- */
.hero {
  display: flex; gap: 24px; align-items: center;
  background: linear-gradient(120deg, #6c5ce7 0%, #7d6ff0 55%, #00a98f 130%);
  color: #fff;
  border-radius: var(--radius);
  padding: 28px;
  margin-bottom: 22px;
}
.hero h2 { font-size: 22px; font-weight: 800; margin-bottom: 6px; }
.hero p { opacity: .92; font-size: 14.5px; max-width: 540px; margin-bottom: 10px; }
.hero p:last-of-type { margin-bottom: 0; }
.hero .btn { margin-top: 16px; }

.stat-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-bottom: 22px; }
.stat {
  background: var(--card); border-radius: 16px; box-shadow: var(--shadow);
  padding: 16px 18px;
}
.stat .num { font-size: 24px; font-weight: 800; }
.stat .lbl { font-size: 12.5px; color: var(--ink-2); font-weight: 600; }

.progress-outer {
  height: 10px; background: var(--line); border-radius: 99px; overflow: hidden;
  margin-top: 8px;
}
.progress-inner { height: 100%; background: linear-gradient(90deg, var(--accent), var(--teal)); border-radius: 99px; transition: width .4s; }

/* ---------- Modules & lessons ---------- */
.module-card { padding: 0; overflow: hidden; }
.module-head {
  display: flex; align-items: center; gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  user-select: none;
}
.module-icon {
  width: 48px; height: 48px; border-radius: 14px; flex: none;
  background: var(--accent-soft);
  display: grid; place-items: center; font-size: 24px;
}
.module-head h3 { font-size: 16.5px; font-weight: 800; }
.module-head .msub { font-size: 13px; color: var(--ink-2); margin-top: 2px; }
.module-meta { margin-left: auto; text-align: right; flex: none; }
.module-meta .mprog { font-size: 12.5px; font-weight: 700; color: var(--ink-2); }
.chev { color: var(--ink-3); font-size: 13px; margin-left: 10px; transition: transform .2s; }
.module-card.open .chev { transform: rotate(90deg); }

.lesson-list { border-top: 1px solid var(--line); display: none; }
.module-card.open .lesson-list { display: block; }
.lesson-row {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 24px;
  text-decoration: none; color: var(--ink);
  border-bottom: 1px solid var(--line);
  transition: background .15s;
}
.lesson-row:last-child { border-bottom: none; }
.lesson-row:hover { background: var(--bg); }
.lstatus {
  width: 30px; height: 30px; border-radius: 50%; flex: none;
  display: grid; place-items: center; font-size: 13px; font-weight: 800;
  background: var(--bg); color: var(--ink-3);
  border: 2px solid var(--line);
}
.lstatus.done { background: var(--teal-soft); color: var(--teal); border-color: var(--teal); }
.lstatus.next { background: var(--accent-soft); color: var(--accent-dark); border-color: var(--accent); }
.lesson-row .ltitle { font-weight: 700; font-size: 14.5px; }
.lesson-row .lmeta { font-size: 12px; color: var(--ink-3); }
.lesson-row .go { margin-left: auto; font-weight: 700; color: var(--accent); font-size: 13px; flex: none; }

/* ---------- Lesson player ---------- */
.player-top { display: flex; align-items: center; gap: 14px; margin-bottom: 18px; flex-wrap: wrap; }
.backlink {
  text-decoration: none; color: var(--ink-2); font-weight: 700; font-size: 13.5px;
  background: var(--card); border-radius: 10px; padding: 8px 14px; box-shadow: var(--shadow);
}
.player-title { font-weight: 800; font-size: 16px; }
.stepbar { display: flex; gap: 5px; margin-bottom: 22px; }
.stepbar span { height: 6px; flex: 1; border-radius: 99px; background: var(--line); }
.stepbar span.done { background: var(--teal); }
.stepbar span.cur { background: var(--accent); }

.step-card { max-width: 720px; }
.step-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 14px; }
.step-top .step-kind { margin-bottom: 0; }
.listen-btn {
  border: 1px solid var(--line); background: var(--bg); color: var(--ink-2);
  font: inherit; font-size: 12.5px; font-weight: 700;
  border-radius: 99px; padding: 6px 14px; cursor: pointer; flex: none;
  transition: background .15s, color .15s;
}
.listen-btn:hover { background: var(--accent-soft); color: var(--accent-dark); }
.step-kind {
  display: inline-block; font-size: 11.5px; font-weight: 800; letter-spacing: .8px;
  text-transform: uppercase; color: var(--accent-dark);
  background: var(--accent-soft); border-radius: 8px; padding: 4px 10px; margin-bottom: 14px;
}
.step-kind.k-practice { color: var(--teal); background: var(--teal-soft); }
.step-kind.k-quiz { color: var(--amber); background: var(--amber-soft); }
.step-card h3 { font-size: 20px; font-weight: 800; margin-bottom: 12px; letter-spacing: -0.3px; }
.step-body { font-size: 15px; color: #333849; }
.step-body p { margin-bottom: 12px; }
.step-body ul, .step-body ol { margin: 0 0 12px 22px; }
.step-body li { margin-bottom: 6px; }
.step-body h4 { margin: 18px 0 8px; font-size: 15.5px; }
.step-body blockquote {
  border-left: 3px solid var(--accent); background: var(--accent-soft);
  padding: 12px 16px; border-radius: 0 12px 12px 0; margin-bottom: 12px; font-style: italic;
}
.tip, .warn, .example {
  border-radius: 12px; padding: 14px 16px; margin: 14px 0; font-size: 14px;
}
.tip { background: var(--teal-soft); }
.tip::before { content: "💡 Совет"; display: block; font-weight: 800; margin-bottom: 4px; color: var(--teal); font-size: 12.5px; }
.warn { background: var(--amber-soft); }
.warn::before { content: "⚠️ Важно"; display: block; font-weight: 800; margin-bottom: 4px; color: var(--amber); font-size: 12.5px; }
.example { background: var(--bg); border: 1px dashed var(--line); }
.example::before { content: "🎬 Пример"; display: block; font-weight: 800; margin-bottom: 4px; color: var(--ink-2); font-size: 12.5px; }

/* Quiz */
.q-option {
  display: block; width: 100%; text-align: left;
  background: var(--bg); border: 2px solid var(--line); border-radius: 14px;
  padding: 14px 16px; margin-bottom: 10px;
  font: inherit; font-weight: 600; font-size: 14.5px; color: var(--ink);
  cursor: pointer; transition: border-color .15s, background .15s;
}
.q-option:hover:not(:disabled) { border-color: var(--accent); background: var(--accent-soft); }
.q-option:disabled { cursor: default; opacity: .75; }
.q-option.correct { border-color: var(--teal); background: var(--teal-soft); opacity: 1; }
.q-option.wrong { border-color: var(--rose); background: var(--rose-soft); opacity: 1; }
.q-option.best { border-color: var(--teal); background: var(--teal-soft); opacity: 1; }
.q-feedback {
  border-radius: 12px; padding: 14px 16px; margin-top: 6px; font-size: 14px;
  background: var(--bg); border: 1px solid var(--line);
  animation: fadeup .25s ease;
}
.q-feedback.good { background: var(--teal-soft); border-color: transparent; }
.q-feedback.bad { background: var(--rose-soft); border-color: transparent; }
@keyframes fadeup { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* Practice step */
.checklist { list-style: none; margin: 12px 0 0 !important; }
.checklist li {
  display: flex; gap: 10px; align-items: flex-start;
  padding: 8px 0; font-size: 14.5px;
}
.checklist li::before { content: "☐"; color: var(--accent); font-weight: 800; }

/* Keypoints */
.keypoints { list-style: none; margin: 0 !important; }
.keypoints li {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 10px 0; font-size: 15px; font-weight: 600;
}
.keypoints li::before { content: "✓"; color: var(--teal); font-weight: 800; flex: none; }

.player-actions { display: flex; gap: 12px; margin-top: 22px; align-items: center; }

.btn {
  display: inline-block; border: none; cursor: pointer;
  background: var(--accent); color: #fff;
  font: inherit; font-weight: 800; font-size: 14.5px;
  padding: 13px 26px; border-radius: 14px;
  text-decoration: none; text-align: center;
  transition: background .15s, transform .1s;
}
.btn:hover { background: var(--accent-dark); }
.btn:active { transform: scale(.98); }
.btn:disabled { background: var(--line); color: var(--ink-3); cursor: not-allowed; }
.btn.ghost { background: var(--card); color: var(--accent-dark); box-shadow: var(--shadow); }
.btn.ghost:hover { background: var(--accent-soft); }
.btn.teal { background: var(--teal); }

/* Lesson done screen */
.done-screen { text-align: center; padding: 44px 24px; }
.done-screen .big { font-size: 52px; margin-bottom: 10px; }
.done-screen h2 { font-size: 24px; font-weight: 800; margin-bottom: 8px; }
.done-screen p { color: var(--ink-2); margin-bottom: 20px; }
.sources-box { text-align: left; margin: 22px auto 0; max-width: 560px; font-size: 12.5px; color: var(--ink-2); }
.sources-box h4 { font-size: 12px; text-transform: uppercase; letter-spacing: .8px; color: var(--ink-3); margin-bottom: 8px; }
.sources-box li { margin-bottom: 5px; }
.sources-box a { color: var(--accent); }

/* ---------- Practice page ---------- */
.practice-item { display: flex; flex-direction: column; gap: 10px; }
.practice-item .phead { display: flex; align-items: flex-start; gap: 12px; }
.practice-item .phead input[type=checkbox] { width: 22px; height: 22px; accent-color: var(--teal); margin-top: 2px; flex: none; }
.practice-item.done-p .ptitle { text-decoration: line-through; color: var(--ink-3); }
.ptitle { font-weight: 800; font-size: 15px; }
.pfrom { font-size: 12px; color: var(--ink-3); }
.ptask { font-size: 14px; color: #333849; }
.pnote {
  width: 100%; min-height: 60px; border: 1px solid var(--line); border-radius: 12px;
  padding: 10px 12px; font: inherit; font-size: 13.5px; resize: vertical; background: var(--bg);
}

/* ---------- Glossary ---------- */
.search-input {
  width: 100%; max-width: 420px;
  border: 1px solid var(--line); border-radius: 14px;
  padding: 13px 16px; font: inherit; font-size: 14.5px;
  margin-bottom: 20px; background: var(--card); box-shadow: var(--shadow);
}
.gloss-term { font-weight: 800; font-size: 15px; margin-bottom: 4px; }
.gloss-def { font-size: 14px; color: #333849; }
.gloss-card { padding: 18px 22px; margin-bottom: 12px; }

/* ---------- Principles ---------- */
.principle { display: flex; gap: 16px; align-items: flex-start; }
.principle .pico { font-size: 26px; flex: none; margin-top: 2px; }
.principle h3 { font-size: 16px; font-weight: 800; margin-bottom: 6px; }
.principle p { font-size: 14px; color: #333849; }

.badge {
  display: inline-block; font-size: 11px; font-weight: 800; letter-spacing: .5px;
  padding: 3px 9px; border-radius: 99px; text-transform: uppercase;
}
.badge.evidence { background: var(--teal-soft); color: var(--teal); }
.badge.caution { background: var(--amber-soft); color: var(--amber); }

/* ---------- Выбор специалиста ---------- */
.flag-row {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 11px 0; border-bottom: 1px dashed var(--line);
  cursor: pointer;
}
.flag-row:last-child { border-bottom: none; }
.flag-row input[type=checkbox] { width: 20px; height: 20px; accent-color: var(--accent); margin-top: 2px; flex: none; }
.ftitle { display: block; font-weight: 800; font-size: 14.5px; }
.ftitle.fgreen { color: var(--teal); }
.ftitle.fred { color: var(--rose); }
.fdesc { display: block; font-size: 13px; color: var(--ink-2); margin-top: 2px; }

.verdict { font-size: 14.5px; font-weight: 600; border: 2px solid var(--line); }
.verdict.v-good { background: var(--teal-soft); border-color: var(--teal); }
.verdict.v-mid { background: var(--amber-soft); border-color: var(--amber); }
.verdict.v-bad { background: var(--rose-soft); border-color: var(--rose); }

.q-details { border-bottom: 1px dashed var(--line); padding: 4px 0; }
.q-details:last-child { border-bottom: none; }
.q-details summary {
  cursor: pointer; font-weight: 700; font-size: 14.5px;
  padding: 9px 4px; list-style-position: outside;
}
.q-details summary:hover { color: var(--accent-dark); }
.q-details p { font-size: 13.5px; color: var(--ink-2); padding: 2px 4px 10px 20px; }

/* ---------- Bottom nav (mobile) ---------- */
.bottomnav { display: none; }

@media (max-width: 860px) {
  .sidebar { display: none; }
  .main { margin-left: 0; padding: 20px 16px 96px; }
  .hero { flex-direction: column; align-items: flex-start; padding: 22px; }
  .stat-row { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .stat { padding: 12px; }
  .stat .num { font-size: 19px; }
  .stat .lbl { font-size: 11px; }
  h1.page-title { font-size: 22px; }
  .module-head { padding: 16px; gap: 12px; }
  .lesson-row { padding: 13px 16px; }
  .module-meta .mprog { display: none; }
  .bottomnav {
    display: flex; position: fixed; bottom: 0; left: 0; right: 0;
    background: var(--card); border-top: 1px solid var(--line);
    padding: 8px 4px calc(8px + env(safe-area-inset-bottom));
    z-index: 30;
  }
  .bottomnav a {
    flex: 1; text-align: center; text-decoration: none;
    color: var(--ink-3); font-size: 10.5px; font-weight: 700;
  }
  .bottomnav a .ico { display: block; font-size: 20px; margin-bottom: 2px; }
  .bottomnav a.active { color: var(--accent-dark); }
  .card { padding: 18px; }
  .player-actions { position: sticky; bottom: 84px; }
}