html, body {
  margin: 0;
  padding: 0;
  overflow: hidden;
  background: #09090f;
}

#canvas {
  display: block;
  width: 100vw;
  height: 100vh;
}

/* =============================================
   MIC BUTTON
   ============================================= */
.mic-btn {
  position: fixed;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.65rem 1.5rem;
  background: rgba(68,255,170,0.1);
  border: 1px solid rgba(68,255,170,0.3);
  border-radius: 999px;
  color: #44ffaa;
  font-family: 'SF Pro Display','Inter','Segoe UI',system-ui,sans-serif;
  font-size: 0.88rem;
  cursor: pointer;
  backdrop-filter: blur(10px);
  transition: background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.mic-btn:hover {
  background: rgba(68,255,170,0.18);
  border-color: rgba(68,255,170,0.5);
}

/* Active / listening state */
.mic-btn.active {
  background: rgba(68,255,170,0.2);
  border-color: rgba(68,255,170,0.7);
  box-shadow: 0 0 24px rgba(68,255,170,0.3);
  animation: micPulse 2s ease-in-out infinite;
}

.mic-btn:focus-visible {
  outline: 2px solid rgba(68,255,170,0.6);
  outline-offset: 4px;
}

@keyframes micPulse {
  0%, 100% { box-shadow: 0 0 24px rgba(68,255,170,0.3); }
  50%       { box-shadow: 0 0 40px rgba(68,255,170,0.55); }
}

.mic-icon { font-size: 1.1rem; }

/* =============================================
   STATUS MESSAGE
   ============================================= */
.mic-status {
  position: fixed;
  bottom: 6.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 20;
  color: rgba(255,100,80,0.85);
  font-family: 'SF Pro Display','Inter','Segoe UI',system-ui,sans-serif;
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  text-align: center;
  pointer-events: none;
}

/* =============================================
   HINT
   ============================================= */
.hint {
  position: fixed;
  top: 3.5rem;
  left: 50%;
  transform: translateX(-50%);
  pointer-events: none;
  z-index: 10;
}

.hint-text {
  display: inline-block;
  padding: 0.4rem 1.1rem;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 999px;
  color: rgba(255,255,255,0.35);
  font-size: 0.76rem;
  font-family: 'SF Pro Display','Inter','Segoe UI',system-ui,sans-serif;
  letter-spacing: 0.04em;
  backdrop-filter: blur(8px);
  animation: hintFade 5s ease 2s forwards;
  opacity: 1;
}

@keyframes hintFade {
  0%   { opacity: 1; }
  70%  { opacity: 1; }
  100% { opacity: 0; }
}