body {
  font-family: Arial, sans-serif;
  background: #0f172a;
  color: #f8fafc;
  margin: 0;
  padding: 24px;
}
.app {
  max-width: 860px;
  margin: 0 auto;
  background: #111827;
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.25);
}
.controls {
  display: flex;
  gap: 16px;
  margin-bottom: 16px;
}
label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-weight: 600;
}
select, textarea, button {
  border-radius: 10px;
  border: 1px solid #334155;
  padding: 10px 12px;
  font-size: 1rem;
}
textarea {
  width: 100%;
  min-height: 140px;
  resize: vertical;
  margin-bottom: 12px;
}
.buttons {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
button {
  cursor: pointer;
  background: #2563eb;
  color: white;
}
button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}
.swap-btn,
#copyBtn {
  align-self: flex-end;
  padding: 10px 16px;
  background: #0ea5e9;
  border-color: transparent;
  color: #fff;
}
#copyBtn {
  font-size: 0.95rem;
}
button {
  cursor: pointer;
  background: #2563eb;
  color: white;
  border: 1px solid transparent;
  transition: background 0.2s ease, transform 0.2s ease;
}
button:hover:not(:disabled) {
  background: #1d4ed8;
  transform: translateY(-1px);
}

#voiceBtn.active {
  background: linear-gradient(180deg,#34d399,#10b981);
  border-color: transparent;
  box-shadow: 0 10px 30px rgba(16,185,129,0.35);
  color: #071025;
}

#voiceBtn.active:hover:not(:disabled) {
  background: linear-gradient(180deg,#6ee7b7,#34d399);
}

#voiceBtn.listening {
  background: linear-gradient(180deg,#f59e0b,#d97706);
}

.panel {
  background: #1f2937;
  border-radius: 12px;
  padding: 16px;
  margin-top: 16px;
}
.panel-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  font-size: 0.95rem;
  color: #cbd5e1;
  margin-top: 6px;
}
.microphone-hint {
  margin-top: 10px;
  color: #cbd5e1;
  font-size: 0.9rem;
  font-style: italic;
}
.tts-notice {
  margin-top: 6px;
  color: #f8fafc;
  font-size: 0.95rem;
  padding: 10px 12px;
  background: #0f172a;
  border: 1px solid #334155;
  border-radius: 10px;
}
.voice-status {
  color: #a5b4fc;
}
.output-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.copy-feedback {
  margin-top: 10px;
  color: #4ade80;
  min-height: 1.2rem;
}
.output #translatedText {
  min-height: 80px;
  padding: 12px;
  background: #111827;
  border-radius: 10px;
}
.status {
  margin-top: 10px;
  font-size: 0.95rem;
  color: #93c5fd;
}

.dev-log {
  margin-top: 12px;
  background: #0b1220;
  border: 1px solid #273449;
  border-radius: 8px;
  color: #cbd5e1;
  font-size: 0.85rem;
  max-height: 160px;
  overflow: hidden;
}
.dev-log-header {
  display: flex;
  justify-content: space-between;
  padding: 8px 10px;
  border-bottom: 1px solid #172033;
  background: #071025;
}
.dev-log-body {
  padding: 8px 10px;
  overflow-y: auto;
  max-height: 120px;
}
.dev-log-entry {
  padding: 4px 0;
  border-bottom: 1px dashed rgba(255,255,255,0.03);
}
.clear-log {
  background: transparent;
  border: 1px solid #334155;
  color: #cbd5e1;
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 0.8rem;
}