body {
  margin: 0;
  min-height: 100vh;
  height: 100%;
  background-image: url("../images/citynight.jpg");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  cursor: default;
  overflow: hidden;
}
.logo-container {
  position: absolute;
  top: 20px;
  left: 20px;
  display: flex;
  align-items: center;
  font-family: 'Arial Black', Arial, sans-serif;
  font-size: 2.5rem;
  color: #fff;
  user-select: none;
  z-index: 10;
  pointer-events: none;
  text-shadow: 0 2px 8px #000;
}
.eye {
  position: relative;
  width: 40px;
  height: 40px;
  margin-right: 1px;
  margin-left: 2px;
  background: #fff;
  border: 3px solid #222;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(0,0,0,0.18);
  overflow: hidden;
}
.pupil {
  position: absolute;
  width: 16px;
  height: 19px;
  background: #222;
  border-radius: 50%;
  left: 12px;
  top: 12px;
  transition: left 0.1s, top 0.1s;
  z-index: 2;
}
.eyelid {
  position: absolute;
  left: 0;
  top: 0;
  width: 40px;
  height: 40px;
  background: #ffe7e7;
  border-radius: 50%;
  z-index: 3;
  pointer-events: none;
  transform: translateY(-100%);
  opacity: 0.9;
  transition: transform 0.15s cubic-bezier(.5,2,.5,1), opacity 0.15s;
}
.eye.blink .eyelid {
  transform: translateY(0%);
  opacity: 1;
  transition: transform 0.15s cubic-bezier(.5,2,.5,1), opacity 0.15s;
}
.text {
  display: flex;
  align-items: center;
}
/* Firework particle styling */
.firework {
  position: fixed;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  pointer-events: none;
  z-index: 1;
  animation: explode 1s cubic-bezier(.5,1.5,.5,1) forwards;
  will-change: transform, opacity;
}
@keyframes explode {
  0% {
    opacity: 1;
    transform: translate(0, 0) scale(1);
  }
  80% {
    opacity: 1;
    transform: translate(var(--tx), var(--ty)) scale(1.2);
  }
  100% {
    opacity: 0;
    transform: translate(var(--tx), var(--ty)) scale(0.5);
  }
}
/* Optional: subtle twinkling stars */
.star {
  position: fixed;
  background: #fff;
  border-radius: 50%;
  opacity: 0.7;
  z-index: 0;
  animation: twinkle 3s infinite alternate;
}
@keyframes twinkle {
  from { opacity: 0.5; }
  to   { opacity: 1; }
}