html, body {
  margin: 0;
  height: 100%;
  font-family: 'Helvetica Neue', Arial, sans-serif;
}

.hero {
  position: relative;
  height: 100vh;
  background: url('cb-desk.jpg') center/cover no-repeat;
  display: flex;
  align-items: flex-end;
}

.overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    rgba(0,0,0,0.2),
    rgba(0,0,0,0.7)
  );
}

.content {
  position: relative;
  padding: 3rem;
  color: #f2f2f2;
}

h1 {
  font-size: clamp(2rem, 4vw, 3.5rem);
  margin: 0;
  letter-spacing: 1px;
}

p {
  opacity: 0.85;
  margin-top: 0.5rem;
}

#audioToggle {
  position: absolute;
  bottom: 20px;
  right: 20px;
  background: none;
  border: none;
  font-size: 1.4rem;
  color: #fff;
  cursor: pointer;
}
#audioPrompt {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.promptBox {
  background: rgba(15,15,15,0.9);
  color: #f5f5f5;
  padding: 1.5rem 2.5rem;
  border-radius: 10px;
  font-size: 1.2rem;
  text-align: center;
  cursor: pointer;
  box-shadow: 0 0 20px rgba(0,0,0,0.6);
  animation: pulse 2s infinite;
}

.promptBox span {
  display: block;
  font-size: 0.9rem;
  opacity: 0.8;
  margin-top: 0.25rem;
}

@keyframes pulse {
  0%   { transform: scale(1); }
  50%  { transform: scale(1.03); }
  100% { transform: scale(1); }
}