* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  overflow: hidden;
  font-family: 'Inter', 'Avenir', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  background: #000;
  color: #f7f7f7;
}

#viewer {
  position: fixed;
  inset: 0;
  z-index: 0;
}

.overlay {
  position: fixed;
  inset: 0;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  pointer-events: none;
}

.content {
  display: grid;
  gap: 0.35rem;
  justify-items: start;
  text-align: left;
  pointer-events: auto;
  background: transparent;
  border: none;
  border-radius: 0;
  backdrop-filter: none;
  padding: 0;
  max-width: min(38rem, 100%);
}

.spacer {
  height: 1rem;
}

.content h1,
.content p {
  margin: 0;
  font-size: clamp(0.95rem, 2.6vw, 1.2rem);
  line-height: 1.4;
  letter-spacing: 0.02em;
  color: #000;
  font-weight: 700;
}

.content h1 + p {
  margin-top: 1rem;
}

@media (max-width: 720px) {
  .overlay {
    padding: 1rem;
  }

  .content {
    border-radius: 20px;
    padding: 1.5rem;
  }
}

.gyro-prompt {
  position: fixed;
  inset: 0;
  z-index: 2;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 1.5rem;
  pointer-events: auto;
}

.gyro-prompt.hidden {
  display: none;
}

.gyro-prompt > div {
  width: min(100%, 420px);
  background: rgba(4, 7, 15, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 22px;
  padding: 1rem 1.2rem;
  display: grid;
  gap: 0.85rem;
}

.gyro-prompt p {
  margin: 0;
  color: #f7f7f7;
  line-height: 1.6;
  font-size: 1rem;
}

.gyro-prompt button {
  appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border-radius: 999px;
  padding: 0.95rem 1.25rem;
  font-size: 0.98rem;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
}

.gyro-prompt button:hover {
  background: rgba(255, 255, 255, 0.14);
  transform: translateY(-1px);
}

@media (max-width: 520px) {
  .gyro-prompt {
    padding: 1rem;
  }

  .gyro-prompt > div {
    padding: 0.9rem 1rem;
  }
}