[hidden] {
  display: none !important;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f2f4f7;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: #1d2330;
}

.card {
  background: #fff;
  width: min(640px, 92vw);
  padding: 28px 32px;
  border-radius: 12px;
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.08);
}

h1 {
  font-size: 1.25rem;
  margin: 0 0 6px;
}

.meta {
  font-size: 0.8rem;
  color: #6b7280;
  margin: 0 0 16px;
}

.progress {
  font-size: 0.85rem;
  color: #6b7280;
  margin: 0 0 8px;
}

.question {
  font-size: 1.05rem;
  line-height: 1.5;
  margin: 0 0 18px;
  white-space: pre-line;
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.text-input {
  flex: 1 1 100%;
  padding: 10px 12px;
  font-size: 1rem;
  border: 1px solid #cfd4dc;
  border-radius: 8px;
}

.controls audio {
  width: 100%;
}

.hint {
  flex: 1 1 100%;
  font-size: 0.9rem;
  color: #4b5563;
  margin: 0;
}

.btn {
  padding: 10px 18px;
  font-size: 0.95rem;
  border-radius: 8px;
  border: 1px solid #cfd4dc;
  background: #fff;
  cursor: pointer;
}

.btn:hover:not(:disabled) {
  background: #eef2f7;
}

.btn:disabled {
  opacity: 0.5;
  cursor: default;
}

.btn.primary {
  background: #2563eb;
  border-color: #2563eb;
  color: #fff;
}

.btn.primary:hover:not(:disabled) {
  background: #1d4ed8;
}

.btn.scale {
  min-width: 52px;
}

.btn.ghost {
  border: none;
  background: transparent;
  color: #6b7280;
  padding: 6px 0;
}

footer {
  margin-top: 24px;
  text-align: right;
}

.status {
  min-height: 1.2em;
  margin: 14px 0 0;
  font-size: 0.9rem;
  color: #374151;
}

.status.error {
  color: #b91c1c;
}