.signal-box {
  background: var(--bg-card);
  border: 1px solid var(--bg-card-border);
  padding: 35px;
  border-radius: 10px;
  width: 100%;
  max-width: 620px;
  text-align: center;
  box-shadow: 0 0 30px rgba(0, 0, 0, 0.5);
}

.status-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-cyan);
  margin-bottom: 20px;
}

.blink-dot {
  width: 8px;
  height: 8px;
  background: var(--accent-cyan);
  border-radius: 50%;
  animation: blink 1s infinite alternate;
}

@keyframes blink { 0% { opacity: 0.2; } 100% { opacity: 1; } }

.wave-visualizer {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 6px;
  margin-bottom: 25px;
  overflow: hidden;
}

.decoded-message-box {
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 25px;
}

#signal-text {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-main);
}