* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background: #000;
  color: #fff;
  font-family: 'Courier New', Courier, monospace;
  overflow: hidden;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

.stars {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  background: transparent;
}

.shooting-stars {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
}

/* Tiny static stars */
.stars::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: 
    radial-gradient(white, rgba(255,255,255,.8) 2px, transparent 40px),
    radial-gradient(white, rgba(255,255,255,.7) 1px, transparent 30px),
    radial-gradient(white, rgba(255,255,255,.9) 2px, transparent 50px);
  background-size: 550px 550px, 350px 350px, 450px 450px;
  background-position: 0 0, 40px 60px, 130px 270px;
  opacity: 0.7;
  animation: twinkle 8s infinite alternate;
}

@keyframes twinkle {
  0%,100% { opacity: 0.5; }
  50%     { opacity: 0.9; }
}

/* Shooting stars (inspired by common pure CSS techniques) */
.shooting-star {
  position: absolute;
  width: 3px;
  height: 80px;
  background: linear-gradient(to bottom, rgba(255,255,255,0), white 30%, white 70%, transparent);
  border-radius: 50%;
  box-shadow: 0 0 15px 5px rgba(255,255,220,0.9);
  transform: rotate(35deg);
  opacity: 0;
  animation: fall linear infinite;
}

@keyframes fall {
  0% {
    transform: translate(-150vw, -150vh) rotate(35deg);
    opacity: 0;
  }
  5%  { opacity: 1; }
  50% { opacity: 1; }
  100% {
    transform: translate(150vw, 150vh) rotate(35deg);
    opacity: 0;
  }
}

/* Center content */
.container {
  text-align: center;
  z-index: 10;
}

h1 {
  font-size: 3.2rem;
  margin-bottom: 2rem;
  letter-spacing: 6px;
  color: #e0e0e0;
  text-shadow: 0 0 10px #444;
}

input {
  width: 380px;
  max-width: 90%;
  padding: 16px 24px;
  font-size: 1.4rem;
  font-family: inherit;
  background: rgba(20,20,30,0.7);
  border: 2px solid #444;
  border-radius: 999px;
  color: #0f0;
  outline: none;
  transition: all 0.3s;
  box-shadow: 0 0 15px rgba(0,255,0,0.15);
}

input:focus {
  border-color: #0f0;
  box-shadow: 0 0 25px rgba(0,255,0,0.4);
  background: rgba(20,30,20,0.9);
}

.submit-btn {
  margin-top: 1.8rem;
  padding: 14px 60px;
  font-size: 1.5rem;
  font-weight: bold;
  color: white;
  background: #c00;
  border: none;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.25s;
  box-shadow: 0 0 20px rgba(200,0,0,0.5);
}

.submit-btn:hover {
  background: #f00;
  box-shadow: 0 0 35px rgba(255,0,0,0.7);
  transform: scale(1.08);
}