:root {
  --bg: #faf7f2;
  --card: #ffffff;
  --text: #1f1d1a;
  --muted: #6d675f;
  --line: #e7e1d8;
  --accent: #c8102e;
  --accent-ink: #ffffff;
  --gold: #f1bf00;
  --ok: #1e8e4e;
  --ok-bg: #e3f4ea;
  --bad: #c62828;
  --bad-bg: #fbe5e5;
  --radius: 14px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #171513;
    --card: #23201d;
    --text: #f2eee8;
    --muted: #a39b90;
    --line: #36312c;
    --accent: #e0344f;
    --ok: #4cc27f;
    --ok-bg: #173826;
    --bad: #ef6b6b;
    --bad-bg: #3d1d1d;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); }
body { font: 17px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; -webkit-tap-highlight-color: transparent; }
#app { max-width: 560px; margin: 0 auto; min-height: 100dvh; display: flex; flex-direction: column; }
main { flex: 1; }
.pad { padding: 16px; }
.center { text-align: center; }
.muted { color: var(--muted); }
.small { font-size: 14px; }
.warn { color: var(--bad); }
h1 { font-size: 22px; margin: 0; }
h2 { font-size: 20px; margin: 8px 0 12px; }
h3 { font-size: 16px; margin: 4px 0 10px; }

.top { display: flex; align-items: center; gap: 12px; padding: 12px 16px; border-bottom: 1px solid var(--line);
  position: sticky; top: 0; background: var(--bg); z-index: 2; }
.top h1 { flex: 1; }
.sub { padding: 6px 16px; font-size: 14px; color: var(--muted); }

button { font: inherit; color: inherit; background: var(--card); border: 1px solid var(--line); border-radius: 12px;
  padding: 12px 16px; min-height: 48px; cursor: pointer; }
button:disabled { opacity: .45; cursor: default; }
button.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 600; }
button.ghost { background: transparent; }
button.wide { width: 100%; margin: 6px 0; }
button.link { background: none; border: 0; color: var(--muted); text-decoration: underline; width: 100%; }
button.icon { min-height: 40px; padding: 6px 12px; border: 0; background: none; font-size: 20px; }
button.say { min-height: 36px; padding: 2px 10px; border-radius: 18px; font-size: 16px; vertical-align: middle; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; margin: 12px 0; }
.today { display: flex; align-items: center; gap: 16px; }
.ring { width: 72px; height: 72px; flex: none; }
.ring-bg { fill: none; stroke: var(--line); stroke-width: 8; }
.ring-fg { fill: none; stroke: var(--accent); stroke-width: 8; stroke-linecap: round; transition: stroke-dashoffset .4s; }
.ring text { font-size: 18px; font-weight: 700; fill: var(--text); }
.next h2 { margin-bottom: 14px; }
.next button { width: 100%; }
.board { list-style: none; padding: 0; margin: 0; }
.board li { display: flex; justify-content: space-between; padding: 8px 0; border-top: 1px solid var(--line); }
.board li:first-child { border-top: 0; }

.profiles { display: grid; gap: 12px; margin: 16px 0; }
.profile { font-size: 20px; padding: 20px; border-radius: var(--radius); border-left: 6px solid var(--gold); text-align: left; }

.lessons { list-style: none; padding: 0; margin: 0 0 16px; }
.lessons button { width: 100%; text-align: left; margin: 4px 0; }
.lessons .done { color: var(--ok); }

.steps { flex: 1; display: flex; gap: 4px; font-size: 12px; }
.steps span { flex: 1; text-align: center; padding: 4px 2px; border-radius: 8px; background: var(--line); color: var(--muted); }
.steps .past { background: var(--ok-bg); color: var(--ok); }
.steps .now { background: var(--accent); color: var(--accent-ink); }
.bar { flex: 1; height: 8px; background: var(--line); border-radius: 4px; overflow: hidden; }
.bar i { display: block; height: 100%; background: var(--accent); }

.big { font-size: 28px; font-weight: 600; margin: 18px 0 8px; }
.big.ru { font-size: 21px; font-weight: 500; color: var(--muted); }
.es { color: var(--text); }
.note { display: inline-block; background: #fff6d6; color: #5a4600; border-radius: 10px; padding: 6px 12px; margin: 8px 0; font-size: 15px; }
@media (prefers-color-scheme: dark) { .note { background: #3a3214; color: #f3dc8a; } }
.ex { margin: 14px auto; padding: 12px; border-radius: 12px; background: var(--card); border: 1px solid var(--line); max-width: 460px; }
.q { font-size: 21px; margin: 18px 0 10px; }
.gap { color: var(--accent); font-weight: 700; }

.options { display: grid; gap: 10px; margin: 18px 0; }
.options button { text-align: left; }
button.ok, .chip.ok { background: var(--ok-bg); border-color: var(--ok); color: var(--ok); }
button.bad { background: var(--bad-bg); border-color: var(--bad); color: var(--bad); }

input.type, input:not([type="range"]), select { font: inherit; color: var(--text); background: var(--card); border: 1px solid var(--line);
  border-radius: 12px; padding: 12px; width: 100%; }
input.type { font-size: 21px; text-align: center; margin: 14px 0; }
input[type="range"] { width: 100%; }
.row { display: grid; gap: 6px; margin: 10px 0; font-size: 15px; color: var(--muted); }

.feedback { margin: 14px 0; padding: 0; min-height: 24px; }
.feedback.ok, .feedback.bad { padding: 12px; border-radius: 12px; }
.feedback.ok { background: var(--ok-bg); color: var(--ok); }
.feedback.bad { background: var(--bad-bg); color: var(--bad); }
.answer { font-size: 20px; margin-top: 12px; }
.answer.ok { color: var(--ok); }
.answer.bad { color: var(--bad); }

.chips { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin: 14px 0; }
.chip { padding: 8px 14px; min-height: 44px; border-radius: 22px; }
.chip:disabled { opacity: .25; }
.built { min-height: 56px; border-bottom: 2px dashed var(--line); padding: 8px; display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; cursor: pointer; }
.chip.on { display: inline-block; background: var(--card); border: 1px solid var(--accent); border-radius: 22px; padding: 8px 14px; }

.explain { line-height: 1.55; }
.explain table { border-collapse: collapse; margin: 10px 0; width: 100%; }
.explain td { border-bottom: 1px solid var(--line); padding: 6px 8px; }
.explain i.tap { color: var(--accent); cursor: pointer; text-decoration: underline dotted; }

.dialogue { margin-top: 14px; }
.line { padding: 10px 12px; border-radius: 12px; margin: 6px 0; background: var(--card); border: 1px solid var(--line); }
.line.playing { border-color: var(--accent); }
.mic { font-size: 34px; width: 88px; height: 88px; border-radius: 50%; margin: 20px auto 6px; display: block; }
.mic.listening { background: var(--accent); color: var(--accent-ink); animation: pulse 1s infinite; }
@keyframes pulse { 50% { transform: scale(1.07); } }

.actions { display: flex; gap: 8px; padding: 12px 16px calc(12px + env(safe-area-inset-bottom)); border-top: 1px solid var(--line);
  position: sticky; bottom: 0; background: var(--bg); }
.actions button { flex: 1; }
.grade { display: flex; flex-direction: column; align-items: center; padding: 8px 4px; font-size: 15px; }
.grade small { color: var(--muted); font-size: 12px; }
.g1 { border-color: var(--bad); }
.g4 { border-color: var(--ok); }
a { color: var(--accent); }