* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html, body {
  height: 100%;
  font-family: 'Poppins', sans-serif;
  background: linear-gradient(135deg, #74ebd5, #ACB6E5);
  display: flex;
  align-items: center;
  justify-content: center;
}

.card {
  background: white;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.1);
  max-width: 480px;
  width: 90%;
  text-align: center;
}

.card h1 {
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: #333;
}

.semaphore {
  position: relative;
  width: 200px;
  height: 200px;
  margin: 0 auto 1.5rem;
  background: #e0f7fa;
  border-radius: 50%;
  box-shadow: inset 0 0 8px rgba(0,0,0,0.1);
}

.arm {
  position: absolute;
  bottom: 50%;
  left: 50%;
  width: 6px;
  height: 80px;
  background: #00796b;
  transform-origin: bottom center;
  animation: signal 9s steps(9) infinite;
}
.arm-left  { transform: rotate(var(--l)); }
.arm-right { transform: rotate(var(--r)); }

@keyframes signal {
  0%    { --l: 135deg; --r: 270deg; }
  11.11%{ --l: 45deg; --r: 180deg; }
  22.22%{ --l: 225deg; --r: 90deg; }
  33.33%{ --l:   225deg; --r: 180deg; }
  44.44%{ --l:  270deg; --r: 0deg; }
  55.56%{ --l:  225deg; --r: 270deg; }
  66.67%{ --l: 270deg; --r: 315deg; }
  77.78%{ --l:   90deg; --r: 270deg; }
  88.89%{ --l: 45deg; --r: 180deg; } 
  100%  { --l: 135deg; --r: 270deg; } 
}

.question {
  font-size: 0.95rem;
  color: #555;
}


.semaphore {
  position: relative;
}

.semaphore::after {
  content: "";
  position: absolute;
  top: -8px;
  left: -8px;
  right: -8px;
  bottom: -8px;
  border: 4px solid #ff5722;
  border-radius: 50%;
  opacity: 0;
  pointer-events: none;
  animation: cycle-indicator 9s linear infinite;
}

@keyframes cycle-indicator {
  0%, 100% { opacity: 1; }
  5%, 95% { opacity: 0; }
}