.mt-ambient-btn {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 99999;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
  background: rgba(12, 10, 18, 0.82);
  color: #f4efe6;
  font: 600 13px/1.2 system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  letter-spacing: 0.02em;
  cursor: pointer;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.28);
  transition: background 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
}
.mt-ambient-btn:hover {
  background: rgba(24, 18, 32, 0.92);
  transform: translateY(-1px);
}
.mt-ambient-btn:focus-visible {
  outline: 2px solid #d4af37;
  outline-offset: 3px;
}
.mt-ambient-btn[data-state="on"] {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.28), 0 0 0 1px rgba(212, 175, 55, 0.45);
}
.mt-ambient-btn[data-state="resume"] {
  animation: mt-ambient-pulse 1.6s ease-in-out infinite;
}
.mt-ambient-icon {
  width: 14px;
  height: 14px;
  display: block;
}
@keyframes mt-ambient-pulse {
  0%, 100% { box-shadow: 0 8px 24px rgba(0, 0, 0, 0.28); }
  50% { box-shadow: 0 8px 28px rgba(212, 175, 55, 0.35), 0 0 0 1px rgba(212, 175, 55, 0.55); }
}
@media (max-width: 600px) {
  .mt-ambient-btn {
    right: 12px;
    bottom: 12px;
    padding: 9px 12px;
    font-size: 12px;
  }
}