:root {
  color-scheme: light dark;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --bg: #f4f4f2;
  --card: #ffffff;
  --text: #111111;
  --muted: #666666;
  --line: #ddddda;
  --primary: #111111;
  --primary-text: #ffffff;
  --danger: #8d1d1d;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f0f0f;
    --card: #191919;
    --text: #f4f4f4;
    --muted: #aaaaaa;
    --line: #333333;
    --primary: #f2f2f2;
    --primary-text: #111111;
    --danger: #c24b4b;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}
.app-shell {
  width: min(720px, 100%);
  margin: 0 auto;
  min-height: 100vh;
  padding: calc(env(safe-area-inset-top) + 18px) 18px calc(env(safe-area-inset-bottom) + 24px);
}
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}
.eyebrow {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--muted);
}
h1 {
  margin: 2px 0 0;
  font-size: 34px;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 20px;
  box-shadow: 0 10px 30px rgba(0,0,0,.05);
}
.status-row {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
}
.dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #8a8a8a;
}
.dot.ok { background: #2e7d32; }
.dot.busy { background: #c98512; }
.dot.error { background: #b3261e; }

h2 { margin: 22px 0 8px; font-size: 20px; }
#speechText {
  margin: 0;
  font-size: 21px;
  line-height: 1.4;
}
.product-panel {
  margin-top: 22px;
  border-top: 1px solid var(--line);
  padding-top: 18px;
}
.product-name {
  font-weight: 700;
  font-size: 19px;
}
.stock-value {
  margin-top: 4px;
  font-size: 34px;
  font-weight: 700;
}
.actions {
  display: grid;
  gap: 10px;
  margin-top: 24px;
}
button {
  appearance: none;
  border: 0;
  border-radius: 14px;
  padding: 15px 16px;
  font-size: 17px;
  font-weight: 650;
}
.primary {
  background: var(--primary);
  color: var(--primary-text);
}
.secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line);
}
.danger {
  background: var(--danger);
  color: #fff;
}
.ghost {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--line);
}
.transcript {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 4px;
}
.label {
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .08em;
}
.debug {
  margin-top: 14px;
  font-size: 12px;
  overflow: auto;
}