body {
  margin: 0;
  padding: 0;
  overflow-x: hidden;
  background: linear-gradient(135deg, #87ceeb 0%, #ffb6c1 50%, #ffa07a 100%);
  min-height: 100vh;
  position: relative;
}

.fuji-background {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 100vh;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 600"><polygon points="600,100 200,500 1000,500" fill="%23DCDCDC" stroke="%23B0B0B0" stroke-width="2"/><polygon points="600,100 400,350 800,350" fill="%23F0F0F0"/><polygon points="580,120 620,120 640,180 560,180" fill="white"/></svg>')
    no-repeat center bottom;
  background-size: cover;
  z-index: -2;
}

.cherry-blossom {
  position: absolute;
  width: 20px;
  height: 20px;
  background: radial-gradient(circle, #ffb6c1 30%, #ff69b4 70%);
  border-radius: 50% 0 50% 50%;
  transform: rotate(45deg);
  animation: fall linear infinite;
  opacity: 0.8;
}

.cherry-blossom::before {
  content: '';
  position: absolute;
  top: -5px;
  left: -5px;
  width: 15px;
  height: 15px;
  background: radial-gradient(circle, #ffc0cb 30%, #ff1493 70%);
  border-radius: 50% 50% 50% 0;
  transform: rotate(-45deg);
}

@keyframes fall {
  0% {
    transform: translateY(-100vh) rotate(0deg);
    opacity: 1;
  }
  100% {
    transform: translateY(100vh) rotate(360deg);
    opacity: 0;
  }
}

.content-container {
  position: relative;
  z-index: 10;
  min-height: 100vh;
}

.valentine-card {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border: none;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}