:root {
  --bg: #111;
  --fg: #f4f1ea;
  --muted: #a39e93;
  --line: #2a2a2a;
  --accent: #c45c26;
  --ok: #3d8b5f;
  --bad: #c44b3c;
  --btn: #1c1c1c;
  --pad: 16px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.4 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

#app {
  max-width: 480px;
  margin: 0 auto;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  padding: env(safe-area-inset-top) var(--pad) calc(72px + env(safe-area-inset-bottom));
}

h1 { font-size: 1.35rem; margin: 12px 0 4px; }
h2 { font-size: 1.1rem; margin: 16px 0 8px; }
p { margin: 0 0 10px; }
.muted { color: var(--muted); font-size: 0.92rem; }

button, .btn {
  display: block;
  width: 100%;
  text-align: center;
  background: var(--btn);
  color: var(--fg);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px 12px;
  font: inherit;
  margin: 8px 0;
}

button.primary { background: var(--accent); border-color: var(--accent); }
button.ghost { background: transparent; }
button:disabled { opacity: 0.45; }

.row {
  display: flex;
  gap: 8px;
}
.row > * { flex: 1; }

.progress {
  color: var(--muted);
  font-size: 0.85rem;
  margin: 8px 0 16px;
}

.prompt {
  font-size: 1.2rem;
  margin: 12px 0 18px;
}

.tokens {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0 18px;
}
.token {
  width: auto;
  padding: 10px 12px;
  margin: 0;
}
.token.picked { outline: 2px solid var(--accent); }
.token.wrong { outline: 2px solid var(--bad); }

.match-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin: 12px 0;
}
.match-grid button { margin: 0; }
.match-grid button.done { opacity: 0.4; }
.match-grid button.picked { outline: 2px solid var(--accent); }

input, textarea {
  width: 100%;
  background: var(--btn);
  color: var(--fg);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px 12px;
  font: inherit;
  margin: 8px 0 12px;
}

textarea { min-height: 88px; }

.feedback {
  border-radius: 12px;
  padding: 12px;
  margin: 12px 0;
}
.feedback.ok { background: #1d3326; }
.feedback.bad { background: #3a1f1c; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  margin: 8px 0 12px;
}
th, td {
  border-bottom: 1px solid var(--line);
  text-align: left;
  padding: 8px 4px;
  vertical-align: top;
}
th { color: var(--muted); font-weight: 600; }

.note { color: var(--muted); font-size: 0.92rem; }

.nav {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  max-width: 480px;
  margin: 0 auto;
  background: #0c0c0c;
  border-top: 1px solid var(--line);
  padding: 8px var(--pad) calc(8px + env(safe-area-inset-bottom));
}
.nav button {
  margin: 0;
  border: 0;
  background: transparent;
  padding: 10px 4px;
  font-size: 0.85rem;
}
.nav button.active { color: var(--accent); }

.list button { text-align: left; }
.badge {
  float: right;
  color: var(--muted);
  font-size: 0.85rem;
}

.check {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin: 8px 0;
}
.check input { width: auto; margin: 4px 0 0; }

.vocab { font-size: 0.95rem; }
.vocab div { margin: 4px 0; }

.phrase { margin: 12px 0; padding-bottom: 12px; border-bottom: 1px solid var(--line); }

.keypad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin: 12px 0;
}
.keypad button { margin: 0; font-size: 1.25rem; }
.digits-display {
  font-size: 2rem;
  letter-spacing: 0.08em;
  text-align: center;
  min-height: 48px;
  margin: 8px 0 4px;
}
.timer {
  float: right;
  color: var(--muted);
}