body {
  margin: 0; padding: 0;
  font-family: system-ui, sans-serif;
  background: #FAFAFA;
  color: #333;
}
.app-container {
  max-width: 600px;
  margin: auto;
  padding: 16px;
}
h1 {
  font-size: 20px;
  margin-bottom: 16px;
}
.keyword-entry {
  margin-bottom: 12px;
}
.keyword-entry input[type="text"] {
  width: 60%;
  padding: 8px;
  margin-right: 8px;
  border: 1px solid #ccc;
  border-radius: 4px;
}
.keyword-entry textarea {
  width: 100%;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 8px;
  resize: none;
  margin-top: 4px;
}
.links-display {
  font-size: 14px;
  color: #555;
  margin-top: 4px;
}
button {
  display: inline-block;
  padding: 12px;
  margin: 4px 0;
  background: #0088FF;
  color: #fff;
  border: none;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  min-width: 44px;
  min-height: 44px;
  cursor: pointer;
  font-size: 16px;
}
button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}
#voice-select {
  width: 100%;
  padding: 8px;
  border: 1px solid #ccc;
  border-radius: 4px;
  margin-bottom: 16px;
}
.loading-popup {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}
.loading-content {
  background: #fff;
  padding: 16px 24px;
  border-radius: 8px;
  font-size: 18px;
  color: #333;
}
.content-display {
  resize: vertical;
}
footer {
  text-align: center;
  margin-top: 24px;
}
footer a {
  color: #0088FF;
  text-decoration: none;
}