:root, html[data-theme="dark"] {
  --bg: #101418;
  --bg2: #151c22;
  --card: #1b232b;
  --card2: #22303a;
  --line: #33414d;
  --txt: #f0f2ee;
  --muted: #a7b0b6;
  --accent: #e85d75;
  --accent2: #2fb7a0;
  --accent3: #f0b84f;
  --good: #37c978;
  --bad: #ef6666;
  --code-bg: #263341;
  --code-tx: #d8ecff;
  --shadow: 0 16px 38px rgba(0,0,0,.28);
  --radius: 8px;
}
/* Светлая тема — тёплая «бумага», мягкий контраст, без чисто-белого/чёрного */
html[data-theme="light"] {
  --bg: #f6f4ee;
  --bg2: #ebe7dc;
  --card: #fffefa;
  --card2: #f0ece2;
  --line: #d9d2c4;
  --txt: #24282b;
  --muted: #687077;
  --accent: #cf3f5d;
  --accent2: #168d7f;
  --accent3: #c9851f;
  --good: #208f55;
  --bad: #c94848;
  --code-bg: #e8eef1;
  --code-tx: #245064;
  --shadow: 0 14px 34px rgba(68,59,43,.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", Arial, sans-serif;
  font-size: 16px;
  background:
    radial-gradient(circle at 12% 0%, color-mix(in srgb, var(--accent2) 18%, transparent), transparent 34rem),
    linear-gradient(165deg, var(--bg), var(--bg2));
  background-attachment: fixed;
  color: var(--txt);
  line-height: 1.6;
  letter-spacing: 0;
  min-height: 100vh;
  -webkit-tap-highlight-color: transparent;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  transition: background-color .25s, color .25s;
}
/* комфортное чтение длинных блоков (правила, фразы) */
.acc-body, .lead, .phrase-ru, .word-ru, .breakdown, .gtab { line-height: 1.65; }

/* ---------- шапка ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  border-bottom: 1px solid var(--line);
  padding: 12px 20px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}
.brand { display: flex; align-items: center; justify-content: flex-end; gap: 14px; }
.flag { font-size: 34px; filter: drop-shadow(0 6px 12px rgba(0,0,0,.22)); }
.brand h1 { margin: 0; font-size: 21px; line-height: 1.15; }
.sub { margin: 2px 0 0; color: var(--muted); font-size: 13px; }
.head-actions { margin-left: 0; align-self: center; display: flex; gap: 8px; align-items: center; justify-content: flex-end; flex-wrap: wrap; }
.icon-btn { border: 1px solid var(--line); background: var(--card); color: var(--txt); min-width: 40px; height: 40px; border-radius: 8px; cursor: pointer; font-size: 13px; font-weight: 800; line-height: 1; display: inline-flex; align-items: center; justify-content: center; text-align: center; transition: .15s; padding: 0 10px; }
#theme-btn { width: 40px; padding: 0; font-size: 18px; }
.icon-btn:hover { border-color: var(--accent2); transform: translateY(-1px); }
.menu-btn { font-size: 20px; }
.lang-btn { border: 1px solid var(--line); background: var(--card); color: var(--txt); height: 40px; border-radius: 8px; cursor: pointer; display: inline-flex; align-items: center; gap: 8px; padding: 0 10px; transition: .15s; }
.lang-btn:hover { border-color: var(--accent2); transform: translateY(-1px); }
.logo-mark { width: 28px; height: 28px; border-radius: 8px; display: inline-flex; align-items: center; justify-content: center; background: color-mix(in srgb, var(--accent2) 18%, var(--card)); color: var(--accent2); border: 1px solid color-mix(in srgb, var(--accent2) 45%, var(--line)); font-size: 12px; font-weight: 900; letter-spacing: 0; }
.lang-flag { font-size: 19px; line-height: 1; }
.lang-arrow { position: relative; width: 18px; height: 10px; flex: 0 0 18px; }
.lang-arrow::before { content: ""; position: absolute; left: 1px; right: 3px; top: 5px; height: 2px; border-radius: 2px; background: var(--muted); }
.lang-arrow::after { content: ""; position: absolute; right: 1px; top: 2px; width: 6px; height: 6px; border-top: 2px solid var(--muted); border-right: 2px solid var(--muted); transform: rotate(45deg); }
.level-select { height: 40px; max-width: 150px; padding-top: 0; padding-bottom: 0; font-weight: 700; }

/* выдвижное меню (гамбургер) */
.drawer { position: fixed; top: 0; left: 0; bottom: 0; width: 264px; max-width: 82vw; z-index: 200;
  background: var(--bg2); border-right: 1px solid var(--line);
  transform: translateX(-102%); transition: transform .25s ease;
  padding: 16px 12px calc(16px + env(safe-area-inset-bottom)); padding-top: calc(16px + env(safe-area-inset-top));
  display: flex; flex-direction: column; gap: 4px; overflow-y: auto; }
body.drawer-open .drawer { transform: none; box-shadow: 6px 0 30px rgba(0,0,0,.4); }
.drawer-overlay { position: fixed; inset: 0; z-index: 190; background: rgba(0,0,0,.5);
  opacity: 0; pointer-events: none; transition: opacity .25s; }
body.drawer-open .drawer-overlay { opacity: 1; pointer-events: auto; }
.drawer-head { font-weight: 800; font-size: 16px; padding: 4px 10px 12px; border-bottom: 1px solid var(--line); margin-bottom: 6px; }
.drawer-btn { display: flex; align-items: center; gap: 10px; padding: 13px 12px; border: none; background: transparent; color: var(--txt); border-radius: 8px; cursor: pointer; font-size: 15px; text-align: left; }
.drawer-btn:hover { background: var(--card); }
.drawer-btn.active { background: color-mix(in srgb, var(--accent) 18%, transparent); color: var(--txt); font-weight: 700; }
.drawer-sep { height: 1px; background: var(--line); margin: 10px 6px; }
.drawer .install-btn { width: 100%; padding: 13px; margin-top: 2px; }
.install-btn { font-size: 13px; font-weight: 700; color: #fff; cursor: pointer; border: none; padding: 9px 14px; border-radius: 8px; background: linear-gradient(120deg, var(--accent), var(--accent2)); }
.install-btn[hidden] { display: none; }

/* единый стиль выпадающих списков */
select { appearance: none; -webkit-appearance: none; background-color: var(--card); color: var(--txt); border: 1.5px solid var(--line); border-radius: 10px; padding: 9px 32px 9px 12px; font-size: 15px; cursor: pointer;
  background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="%23888" stroke-width="3" stroke-linecap="round"><path d="M6 9l6 6 6-6"/></svg>');
  background-repeat: no-repeat; background-position: right 10px center; transition: .15s; }
select:hover { border-color: var(--accent2); }
select:focus { outline: none; border-color: var(--accent); }
.nav { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.nav-btn {
  display: inline-flex; align-items: center; gap: 6px;
  border: 1px solid var(--line); background: var(--card);
  color: var(--txt); padding: 8px 14px; border-radius: 8px;
  cursor: pointer; font-size: 14px; transition: .15s;
}
.nav-btn .ni { font-size: 16px; }
.nav-btn:hover { border-color: var(--accent2); }
.nav-btn.active {
  background: linear-gradient(120deg, var(--accent), var(--accent2));
  border-color: transparent; font-weight: 600;
  box-shadow: 0 8px 20px color-mix(in srgb, var(--accent) 22%, transparent);
}

/* ---------- макет ---------- */
main { max-width: 1040px; margin: 0 auto; padding: 28px 18px 64px; }
.view { display: none; animation: fade .25s ease; }
.view.active { display: block; }
@keyframes fade { from { opacity: 0; transform: translateY(6px);} to {opacity:1;transform:none;} }
h2 { font-size: 26px; margin: 0 0 6px; }
.lead { color: var(--muted); margin: 0 0 18px; }
.muted { color: var(--muted); }

/* ---------- грамматика ---------- */
.accordion { background: color-mix(in srgb, var(--card) 96%, var(--accent2) 4%); border: 1px solid var(--line); border-radius: var(--radius); margin-bottom: 12px; overflow: hidden; box-shadow: var(--shadow); }
.acc-head {
  padding: 14px 18px; cursor: pointer; font-weight: 600; font-size: 16px;
  display: flex; justify-content: space-between; align-items: center;
  width: 100%; border: 0; background: transparent; color: inherit; text-align: left; font-family: inherit;
}
.acc-head:hover { background: var(--card2); }
.acc-ico { transition: .2s; color: var(--accent2); }
.accordion.open .acc-ico { transform: rotate(180deg); }
.acc-body { display: none; padding: 0 18px 16px; border-top: 1px solid var(--line); max-width: 680px; }
:focus-visible { outline: 2px solid var(--accent2); outline-offset: 2px; border-radius: 6px; }
.accordion.open .acc-body { display: block; }
.acc-body ul { padding-left: 20px; }
.acc-body li { margin: 6px 0; }
.ex { background: var(--code-bg); color: var(--code-tx); padding: 1px 7px; border-radius: 6px; font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; }
.note { background: rgba(108,140,255,.12); border-left: 3px solid var(--accent2); padding: 8px 12px; border-radius: 8px; font-size: 14px; }
.gtab { width: 100%; border-collapse: collapse; margin: 8px 0; font-size: 14px; }
.gtab th, .gtab td { border: 1px solid var(--line); padding: 7px 10px; text-align: left; }
.gtab th { background: var(--card2); }

/* ---------- сворачиваемая панель (описание + настройки) ---------- */
.panel { background: color-mix(in srgb, var(--card) 96%, var(--accent3) 4%); border: 1px solid var(--line); border-radius: 8px; margin-bottom: 14px; box-shadow: var(--shadow); }
.panel > summary { padding: 11px 14px; cursor: pointer; font-weight: 600; font-size: 14px; color: var(--muted); list-style: none; display: flex; align-items: center; gap: 8px; }
.panel > summary::-webkit-details-marker { display: none; }
.panel > summary::before { content: "▸"; color: var(--accent2); transition: .15s; }
.panel[open] > summary::before { transform: rotate(90deg); }
.panel-body { padding: 2px 14px 14px; }
.panel-body .lead { margin: 0 0 12px; }
.panel-body .cards-controls, .panel-body .cbs, .panel-body .tr-diff { margin-bottom: 0; }

/* ---------- чипы / поиск ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.chip { border: 1px solid var(--line); background: var(--card); color: var(--txt); min-height: 36px; padding: 7px 13px; border-radius: 8px; cursor: pointer; font-size: 13px; }
.chip:hover { border-color: var(--accent); }
.chip.active { background: var(--accent); border-color: transparent; font-weight: 600; }
.search { width: 100%; padding: 11px 14px; border-radius: 8px; border: 1px solid var(--line); background: var(--card); color: var(--txt); font-size: 15px; margin-bottom: 16px; }
.search:focus { outline: none; border-color: var(--accent2); }

/* ---------- словарь ---------- */
.grp { margin: 22px 0 10px; font-size: 18px; }
.count { color: var(--muted); font-size: 13px; }
.words { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 10px; }
.word { display: flex; gap: 12px; align-items: center; background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; box-shadow: 0 10px 24px rgba(0,0,0,.08); }
.word:hover { transform: translateY(-1px); border-color: color-mix(in srgb, var(--accent2) 70%, var(--line)); transition: .15s; }
.word-emoji { font-size: 28px; }
.word-text { display: flex; flex-direction: column; }
.word-id { font-weight: 600; }
.word-ru { color: var(--muted); font-size: 13px; }
.freq { display: inline-flex; gap: 2px; margin-top: 3px; }
.freq i { width: 6px; height: 6px; border-radius: 50%; background: var(--line); }
.freq i.on { background: var(--accent); }

.spk { background: none; border: none; cursor: pointer; padding: 3px; color: var(--muted); vertical-align: middle; line-height: 0; border-radius: 7px; transition: .12s; }
.spk:hover { color: var(--accent); background: var(--card2); }
.spk svg { display: block; }

/* ---------- фразы ---------- */
.phrase { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 12px 14px; margin-bottom: 10px; position: relative; box-shadow: 0 10px 24px rgba(0,0,0,.08); }
.phrase-main { font-size: 16px; }
.phrase-ru { color: var(--muted); margin-top: 2px; }
.tag { position: absolute; top: 10px; right: 12px; font-size: 11px; color: var(--accent2); background: rgba(108,140,255,.12); padding: 2px 8px; border-radius: 999px; }

/* ---------- тренажёр ---------- */
.settings { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 10px 14px; margin-bottom: 12px; }
.settings summary { cursor: pointer; font-weight: 600; }
.cbs { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
/* чекбокс-чип (мультивыбор тем/категорий, тумблеры) */
.cb { position: relative; display: inline-flex; align-items: center; gap: 7px; min-height: 40px; padding: 8px 14px; border: 1.5px solid var(--line); border-radius: 8px; background: var(--card); cursor: pointer; font-size: 14px; user-select: none; transition: .15s; }
.cb input { position: absolute; opacity: 0; width: 0; height: 0; }
.cb:hover { border-color: var(--accent2); }
.cb:has(input:focus-visible), .radios label:has(input:focus-visible) { outline: 2px solid var(--accent2); outline-offset: 2px; }
.cb:has(input:checked) { background: color-mix(in srgb, var(--accent) 15%, var(--card)); border-color: var(--accent); font-weight: 600; }
.cb:has(input:checked)::before { content: "✓"; color: var(--accent); font-weight: 800; margin-right: -1px; }
.stats { color: var(--muted); font-size: 14px; margin-bottom: 12px; }
.link { background: none; border: none; color: var(--accent2); cursor: pointer; text-decoration: underline; font-size: 13px; }

.tr-task { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; margin-bottom: 12px; }
.tr-theme { color: var(--muted); font-size: 13px; }
.tr-schema { margin: 6px 0 12px; }
.tr-cards { display: flex; flex-wrap: wrap; gap: 12px; }
.tr-card { background: var(--card2); border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; min-width: 120px; display: flex; flex-direction: column; gap: 2px; flex: 1; }
.tr-label { font-size: 11px; text-transform: uppercase; letter-spacing: .5px; color: var(--accent2); }
.tr-emoji { font-size: 30px; }
.tr-id { font-weight: 700; font-size: 17px; }
.tr-ru { color: var(--muted); font-size: 13px; }
.hint { color: var(--muted); font-size: 14px; margin: 6px 0 0; }

.tr-input { width: 100%; padding: 13px 15px; font-size: 16px; border-radius: 12px; border: 1px solid var(--line); background: var(--card); color: var(--txt); margin-bottom: 10px; }
.tr-input:focus { outline: none; border-color: var(--accent); }
select:focus-visible, .search:focus-visible, .tr-input:focus-visible { outline: 2px solid var(--accent2); outline-offset: 2px; border-color: var(--accent2); }
.tr-buttons { display: flex; flex-wrap: wrap; gap: 10px; }
.btn { border: 1px solid var(--line); background: var(--card); color: var(--txt); padding: 11px 18px; border-radius: 8px; cursor: pointer; font-size: 15px; }
.btn:hover { border-color: var(--accent2); }
.btn.primary { background: linear-gradient(120deg, var(--accent), var(--accent2)); border-color: transparent; font-weight: 600; }

.tr-result { margin-top: 16px; }
.verdict { padding: 10px 14px; border-radius: 10px; font-weight: 600; margin-bottom: 12px; }
.verdict.good { background: rgba(46,204,113,.15); color: var(--good); border: 1px solid rgba(46,204,113,.4); }
.verdict.bad { background: rgba(255,90,90,.13); color: var(--bad); border: 1px solid rgba(255,90,90,.4); }
.answer-box { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px; }
.answer-line { font-size: 20px; margin-bottom: 10px; }
.breakdown { width: 100%; border-collapse: collapse; font-size: 14px; }
.breakdown th, .breakdown td { border: 1px solid var(--line); padding: 6px 10px; text-align: left; }
.breakdown th { background: var(--card2); color: var(--muted); }

/* ---------- квиз ---------- */
.quiz-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; text-align: center; margin-bottom: 14px; box-shadow: var(--shadow); }
.quiz-emoji { font-size: 72px; }
.quiz-word { font-size: 26px; font-weight: 700; margin: 8px 0; }
.quiz-word.ru { color: var(--accent); }
.quiz-mini-card { width: min(100%, 420px); min-height: 150px; margin: 0 auto 12px; padding: 22px 18px; border: 2px solid var(--accent2); border-radius: 8px; background: linear-gradient(155deg, color-mix(in srgb, var(--card2) 88%, var(--accent2) 12%), var(--card)); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; }
.quiz-card-label { color: var(--muted); font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; }
.quiz-mini-card .quiz-word { margin: 0; overflow-wrap: anywhere; }
.audio-icon { margin-bottom: 6px; }
.quiz-opts { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 14px; }
.quiz-opt { padding: 13px; border-radius: 12px; border: 1px solid var(--line); background: var(--card2); color: var(--txt); cursor: pointer; font-size: 15px; }
.quiz-opt:hover:not(:disabled) { border-color: var(--accent2); }
.quiz-opt.good { background: rgba(46,204,113,.2); border-color: var(--good); }
.quiz-opt.bad { background: rgba(255,90,90,.18); border-color: var(--bad); }
#quiz-fb { margin-top: 14px; }

/* ---------- генерируемые иллюстрации (градиент + эмодзи) ---------- */
.genpic { display: inline-flex; align-items: center; justify-content: center; border-radius: 8px; overflow: hidden; flex: 0 0 auto; box-shadow: inset 0 0 0 1px rgba(255,255,255,.08); }
.genpic .gp-e { line-height: 1; filter: drop-shadow(0 2px 3px rgba(0,0,0,.28)); }
.svgpic { background: none !important; box-shadow: none; }
.svgpic svg { width: 100%; height: 100%; display: block; }
.word-emoji.genpic { width: 50px; height: 50px; border-radius: 8px; }
.word-emoji.genpic .gp-e { font-size: 27px; }
.tr-emoji.genpic { width: 68px; height: 68px; }
.tr-emoji.genpic .gp-e { font-size: 38px; }
.quiz-emoji.genpic { width: 120px; height: 120px; margin: 0 auto 6px; border-radius: 18px; }
.quiz-emoji.genpic .gp-e { font-size: 74px; }
.flash-emoji.genpic { width: 165px; height: 165px; border-radius: 20px; }
.flash-emoji.genpic .gp-e { font-size: 98px; }

/* ---------- тренажёр фраз ---------- */
.tr-diff { font-size: 14px; color: var(--muted); margin-bottom: 10px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.tr-diff select { padding-top: 7px; padding-bottom: 7px; font-size: 14px; }
.tr-ru-big { font-size: 22px; font-weight: 700; margin-top: 6px; }
.tr-build { min-height: 52px; display: flex; flex-wrap: wrap; gap: 8px; align-items: center; padding: 10px 12px; border: 2px solid var(--accent); border-radius: 12px; background: rgba(255,77,125,.06); margin-bottom: 12px; }
.tr-build.empty::before { content: attr(data-empty); color: var(--muted); font-size: 14px; }
.built-chip { border: none; background: linear-gradient(120deg, var(--accent), var(--accent2)); color: #fff; padding: 8px 14px; border-radius: 10px; cursor: pointer; font-size: 16px; font-family: monospace; font-weight: 600; }
.built-chip:hover { opacity: .85; }
.built-chip::after { content: " ✕"; font-size: 11px; opacity: .7; }
.tr-bank { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 14px; }
.bank-chip { border: 1px dashed var(--accent2); background: var(--card2); color: var(--txt); padding: 8px 14px; border-radius: 10px; cursor: pointer; font-size: 16px; font-family: monospace; }
.bank-chip:hover { background: var(--code-bg); border-style: solid; }

/* ---------- тест ---------- */
.test-setup { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
.field { margin-bottom: 16px; }
.field > label { display: block; font-weight: 600; margin-bottom: 8px; }
/* радио — выбираемые карточки-строки с индикатором */
.radios { display: flex; flex-direction: column; gap: 8px; }
.radios label { position: relative; display: flex; align-items: center; gap: 11px; padding: 12px 14px; border: 1.5px solid var(--line); border-radius: 12px; background: var(--card); cursor: pointer; font-size: 15px; transition: .15s; }
.radios label input { position: absolute; opacity: 0; width: 0; height: 0; }
.radios label::before { content: ""; flex: 0 0 auto; width: 20px; height: 20px; border-radius: 50%; border: 2px solid var(--line); transition: .15s; }
.radios label:hover { border-color: var(--accent2); }
.radios label:has(input:checked) { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 9%, var(--card)); }
.radios label:has(input:checked)::before { border-color: var(--accent); background: radial-gradient(circle, var(--accent) 0 38%, transparent 42%); }
.hidden { display: none; }
.test-bar { height: 8px; background: var(--card2); border-radius: 999px; overflow: hidden; margin-bottom: 10px; }
.test-bar-fill { height: 100%; width: 0; background: linear-gradient(90deg, var(--accent), var(--accent2)); transition: width .3s; }
.test-meta { color: var(--muted); font-size: 14px; margin-bottom: 12px; }
.result-big { font-size: 64px; font-weight: 800; text-align: center; background: linear-gradient(120deg, var(--accent), var(--accent2)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.result-grade { text-align: center; font-size: 22px; margin-bottom: 8px; }
.level-advice { max-width: 620px; margin: 0 auto 16px; padding: 12px 14px; border: 1px solid var(--line); border-radius: 8px; background: var(--card); color: var(--txt); text-align: center; }

/* ---------- карточки слов ---------- */
.cards-controls { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 12px; }
.cards-controls select { max-width: 100%; }
.flashcard { position: relative; height: 320px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px;
  background: linear-gradient(155deg, color-mix(in srgb, var(--card2) 88%, var(--accent2) 12%), var(--card)); border: 2px solid var(--accent2); border-radius: 8px; cursor: pointer; padding: 24px; user-select: none; transition: transform .12s; box-shadow: var(--shadow); }
.flashcard:active { transform: scale(.99); }
.flash-face { display: flex; flex-direction: column; align-items: center; gap: 12px; text-align: center; }
.flash-emoji { font-size: 88px; line-height: 1; }
.flash-emoji .ph { width: 160px; height: 160px; border-radius: 16px; }
.flash-word { font-size: 38px; font-weight: 800; }
.flash-word.ru { color: var(--accent); }
.wemoji { font-size: .82em; vertical-align: -2px; }
.flash-hint { position: absolute; bottom: 10px; right: 14px; font-size: 11px; color: var(--muted); }
.flash-example { min-height: 24px; margin: 12px 0 4px; padding: 10px 14px; background: var(--card); border: 1px solid var(--line); border-radius: 8px; font-size: 15px; }
.flash-example .ex-label { color: var(--accent2); font-weight: 600; margin-right: 6px; }
.flash-example .ex-ru { color: var(--muted); }

/* ---------- словарь корней ---------- */
.roots-controls { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.roots-controls .search { flex: 1; min-width: 240px; margin-bottom: 0; }
#roots-list { margin-top: 16px; display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 12px; align-items: start; }
.root-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 14px; box-shadow: 0 10px 24px rgba(0,0,0,.08); }
.root-card.prod { border-color: rgba(46,204,113,.45); }
.root-head { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; border-bottom: 1px solid var(--line); padding-bottom: 8px; margin-bottom: 8px; }
.root-word { font-size: 20px; font-weight: 800; color: var(--good); }
.root-ru { color: var(--txt); }
.root-head .count { margin-left: auto; font-size: 12px; color: var(--muted); white-space: nowrap; }
.root-words { display: flex; flex-direction: column; gap: 6px; }
.rw { display: flex; align-items: center; gap: 8px; font-size: 14px; }
.rw-id { font-weight: 600; }
.rw-ru { color: var(--muted); }
.aff-tag { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 11px; background: var(--code-bg); color: var(--code-tx); padding: 2px 7px; border-radius: 6px; min-width: 78px; text-align: center; white-space: nowrap; }
.aff-tag.root { background: color-mix(in srgb, var(--good) 18%, transparent); color: var(--good); }

/* ---------- модальное окно ---------- */
.modal-overlay { position: fixed; inset: 0; z-index: 300; background: rgba(0,0,0,.55); display: flex; align-items: center; justify-content: center; padding: 20px; opacity: 0; pointer-events: none; transition: opacity .2s; }
.modal-overlay.show { opacity: 1; pointer-events: auto; }
.modal-box { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 22px; max-width: 340px; width: 100%; text-align: center; box-shadow: var(--shadow); }
.modal-title { font-size: 18px; font-weight: 800; margin-bottom: 8px; }
.modal-msg { color: var(--muted); font-size: 14px; margin-bottom: 16px; line-height: 1.6; }
.modal-box .btn { width: 100%; }
.lang-box { text-align: left; max-width: 380px; }
.lang-box .modal-title { text-align: center; margin-bottom: 14px; }
.lang-field { display: flex; flex-direction: column; gap: 6px; font-weight: 700; margin-bottom: 12px; color: var(--txt); }
.lang-field select { width: 100%; }
.lang-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 16px; }
.lang-actions .btn { width: 100%; }
.lang-actions .btn:only-child { grid-column: 1 / -1; }

/* ---------- футер ---------- */
.footer { text-align: center; color: var(--muted); font-size: 13px; padding: 24px; border-top: 1px solid var(--line); }

/* ======================= МОБИЛЬНЫЙ ИНТЕРФЕЙС ======================= */
@media (max-width: 680px) {
  /* --- компактная шапка ---
     ВАЖНО: убираем backdrop-filter, иначе он создаёт containing block
     и position:fixed у .nav цепляется к шапке, а не к экрану. */
  .topbar { padding: 10px 14px; padding-top: calc(10px + env(safe-area-inset-top));
    backdrop-filter: none; -webkit-backdrop-filter: none; background: var(--bg); }
  .brand { gap: 10px; }
  .flag { font-size: 30px; }
  .brand h1 { font-size: 17px; line-height: 1.1; }
  .sub { display: none; }
  .head-actions { gap: 6px; width: 100%; }
  .icon-btn { height: 36px; min-width: 36px; padding: 0 9px; font-size: 12px; }
  #theme-btn { width: 36px; min-width: 36px; font-size: 17px; }
  .lang-btn { height: 36px; padding: 0 8px; gap: 6px; }
  .logo-mark { width: 24px; height: 24px; font-size: 11px; }
  .lang-flag { font-size: 17px; }
  .lang-arrow { width: 15px; flex-basis: 15px; }
  .level-select { height: 36px; max-width: 132px; padding-left: 10px; padding-right: 28px; font-size: 14px; }
  .install-btn { font-size: 12px; padding: 7px 11px; }

  /* --- навигация: нижний таб-бар под большой палец --- */
  .nav {
    position: fixed; left: 0; right: 0; bottom: 0; margin: 0;
    display: flex; flex-wrap: nowrap; gap: 2px;
    background: var(--bg);
    border-top: 1px solid var(--line);
    box-shadow: 0 -4px 16px rgba(0,0,0,.16);
    padding: 6px 4px calc(6px + env(safe-area-inset-bottom));
    overflow-x: auto; -webkit-overflow-scrolling: touch; z-index: 100;
    scrollbar-width: none;
  }
  .nav::-webkit-scrollbar { display: none; }
  .nav-btn {
    flex: 1 0 auto; flex-direction: column; gap: 3px;
    border: none; background: transparent; color: var(--muted);
    padding: 7px 8px; min-width: 58px; border-radius: 14px; font-weight: 500;
  }
  .nav-btn .ni { font-size: 22px; }
  .nav-btn .nl { font-size: 10px; line-height: 1; }
  .nav-btn.active {
    color: #fff; font-weight: 700;
    background: linear-gradient(120deg, rgba(255,77,125,.20), rgba(108,140,255,.20));
  }
  .nav-btn.active .ni { filter: drop-shadow(0 0 7px var(--accent)); }

  /* --- контент над таб-баром --- */
  main { padding: 16px 14px calc(90px + env(safe-area-inset-bottom)); }
  h2 { font-size: 22px; }
  .lead { font-size: 14px; }

  /* --- крупные тач-цели, шрифт ≥16px чтобы не было авто-зума --- */
  .btn { min-height: 46px; font-size: 15px; }
  .tr-buttons { gap: 8px; }
  .tr-buttons .btn { flex: 1 1 40%; }
  input, select, textarea { font-size: 16px; }
  .search { padding: 13px 14px; }
  .chip, .cb { min-height: 44px; }
  .chip { padding: 9px 14px; font-size: 14px; }
  .bank-chip, .built-chip { font-size: 17px; padding: 10px 15px; }

  /* --- одноколоночные сетки --- */
  .words, #roots-list { grid-template-columns: 1fr; }
  .quiz-opts { grid-template-columns: 1fr; }
  .quiz-opt { min-height: 50px; }

  /* --- карточки слов --- */
  .cards-controls { gap: 8px; }
  .cards-controls select { flex: 1 1 auto; }
  .flashcard { height: 270px; }
  .flash-word { font-size: 30px; }
  .flash-emoji.genpic { width: 135px; height: 135px; }
  .flash-emoji.genpic .gp-e { font-size: 80px; }
  .quiz-emoji.genpic { width: 108px; height: 108px; }
  .quiz-emoji.genpic .gp-e { font-size: 66px; }

  /* --- тренажёр/тест --- */
  .tr-ru-big { font-size: 20px; }
  .result-big { font-size: 56px; }
  .answer-line { font-size: 18px; }
}

@media (max-width: 380px) {
  .nav-btn { min-width: 52px; }
  .nav-btn .nl { font-size: 9px; }
  .brand h1 { font-size: 15px; }
}