:root {
  --bg: #1a1a1aff;
  --text: rgba(255, 255, 255, 0.95);
  --muted: rgba(255, 255, 255, 0.6);
  --yellow: #f7c948;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  margin: 0;
}

body {
  display: grid;
  place-items: center;
  font-family: "JetBrains Mono", monospace;
  background: var(--bg);
  color: var(--text);
  overflow: hidden;
}

/* center container */
.center {
  text-align: center;
}

/* LOGO */
.logo-svg {
  width: min(360px, 60vw);
  height: auto;
  display: block;
  margin: 0 auto;
  animation: logoFloat 4s ease-in-out infinite;
  filter: drop-shadow(0 12px 20px rgba(0,0,0,0.5));
}

@keyframes logoFloat {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

/* SUBTITLE */
.subtitle {
  margin-top: 20px;
  font-size: 20px;
  letter-spacing: 0.25em;
  color: var(--muted);
}

/* construction stripe */
.stripe {
  position: fixed;
  left: 0;
  right: 0;
  height: 14px;
  background: repeating-linear-gradient(
    45deg,
    var(--yellow) 0 14px,
    #000 14px 28px
  );
  background-size: 160px 160px;
  animation: stripeMove 5s linear infinite;
}

.stripe.top {
  top: 0
}

.stripe.bottom {
  bottom: 0
}

@keyframes stripeMove {
  from {
    background-position: 0 0;
  }
  to {
    background-position: 160px 0;
  }
}