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

html, body {
  width: 100%;
  height: 100%;
  background: #000;
  color: #fff;
  font-family: 'Courier New', Courier, monospace;
  overflow: hidden;
}

main {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  gap: 3rem;
}

.statement {
  font-size: clamp(1rem, 3vw, 1.5rem);
  letter-spacing: 0.15em;
  color: rgba(255, 255, 255, 0.85);
  animation: flicker 3.5s infinite;
  user-select: none;
}

.input-form input[type="text"] {
  background: transparent;
  border: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  color: rgba(255, 255, 255, 0.5);
  font-family: inherit;
  font-size: 0.875rem;
  letter-spacing: 0.1em;
  width: 240px;
  padding: 0.5rem 0;
  outline: none;
  text-align: center;
  caret-color: rgba(255, 255, 255, 0.3);
}

.input-form input[type="text"]::placeholder {
  color: transparent;
}

@keyframes flicker {
  0%   { opacity: 0.85; }
  5%   { opacity: 0.55; }
  7%   { opacity: 0.85; }
  40%  { opacity: 0.85; }
  42%  { opacity: 0.4; }
  44%  { opacity: 0.85; }
  70%  { opacity: 0.85; }
  72%  { opacity: 0.6; }
  73%  { opacity: 0.85; }
  95%  { opacity: 0.85; }
  97%  { opacity: 0.35; }
  100% { opacity: 0.85; }
}