* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: #1a1a2e;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  color: #fff;
}

.container {
  text-align: center;
}

#duck-wrapper {
  position: relative;
  display: inline-block;
}

#duck-indicator {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 160px;
  height: 160px;
  transition: filter 0.3s ease;
}

.duck-icon {
  width: 120px;
  height: 120px;
  position: relative;
  z-index: 2;
}

#glow-ring {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  transition: all 0.3s ease;
  z-index: 1;
  pointer-events: none;
}

#duck-indicator.silent #glow-ring {
  background: radial-gradient(circle, rgba(255, 50, 50, 0.3) 0%, transparent 70%);
  box-shadow: 0 0 40px 10px rgba(255, 50, 50, 0.2), inset 0 0 40px 10px rgba(255, 50, 50, 0.05);
}

#duck-indicator.speaking #glow-ring {
  background: radial-gradient(circle, rgba(50, 255, 50, 0.4) 0%, transparent 70%);
  box-shadow: 0 0 60px 20px rgba(50, 255, 50, 0.3), inset 0 0 60px 20px rgba(50, 255, 50, 0.1);
  animation: pulse 1.2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.08); opacity: 0.85; }
}

#status-text {
  margin-top: 20px;
  font-size: 1.2rem;
  opacity: 0.8;
}

.btn {
  margin-top: 16px;
  padding: 10px 28px;
  font-size: 1rem;
  border: none;
  border-radius: 8px;
  background: #16213e;
  color: #fff;
  cursor: pointer;
  transition: background 0.2s;
}

.btn:hover {
  background: #0f3460;
}

.hint {
  margin-top: 24px;
  font-size: 0.85rem;
  opacity: 0.5;
}

.error {
  margin-top: 12px;
  color: #ff6b6b;
  font-size: 0.9rem;
}

.hidden {
  display: none;
}