:root {
  --bg-color: #333;
  --eye-size: 100px;
  --pupil-size: 50px;
  --mouth-width: 150px;
  --mouth-height: 60px;
}

body {
  background-color: var(--bg-color);
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
  flex-direction: column;
}

.face {
  display: flex;
  flex-direction: column;
  align-items: center;
  animation: breathe 8s ease-in-out infinite;
}

.eyes {
  display: flex;
}

.eye {
  width: var(--eye-size);
  height: var(--eye-size);
  margin: 0 10px;
  background-color: #fff;
  border-radius: 50%;
  position: relative;
  transition: background-color 0.3s;
}

.eyelid {
  width: 100%;
  height: 0%;
  background-color: var(--bg-color);
  position: absolute;
  top: 0;
  left: 0;
  border-radius: 50%;
  z-index: 2;
}

.pupil {
  width: var(--pupil-size);
  height: var(--pupil-size);
  background-color: #000;
  border-radius: 50%;
  position: absolute;
  top: 25px;
  left: 25px;
  transition: all 0.5s ease-out;
}

.mouth {
  width: var(--mouth-width);
  height: var(--mouth-height);
  margin-top: 20px;
  border: 8px solid #fff;
  border-radius: 0 0 150px 150px;
  border-top: 0;
  transform: scaleX(1.1);
  transition: all 0.3s;
}

.mouth:hover {
  height: 80px;
  border-radius: 0 0 180px 180px;
}

@keyframes breathe {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.02); }
}

.matrix-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}

.tech-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at center, transparent 0%, rgba(51, 51, 51, 0.95) 70%);
  z-index: -1;
}