:root {
  font-family: system-ui, sans-serif;
  line-height: 1.45;
  color: #111;
  background: #f6f7fb;
}

header {
  max-width: 800px;
  margin: 1.5rem auto;
  padding: 0 1rem;
}

.sub {
  color: #444;
  font-size: 0.95rem;
}

main {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 1rem 2rem;
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

button {
  padding: 0.5rem 1rem;
  border-radius: 8px;
  border: 1px solid #ccc;
  background: #fff;
  cursor: pointer;
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

#btnSpeak:active:not(:disabled) {
  background: #dbeafe;
}

.status {
  font-size: 0.9rem;
  color: #333;
}

.api-status {
  font-size: 0.85rem;
  margin-top: 0.5rem;
}

.api-ok {
  color: #166534;
}

.api-warn {
  color: #9a3412;
}

.hint {
  font-size: 0.9rem;
  color: #444;
  margin: 0.75rem 0;
  max-width: 640px;
}

.log pre {
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 1rem;
  min-height: 200px;
  white-space: pre-wrap;
  word-break: break-word;
}