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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Georgia", serif;
  min-height: 100vh;
  overflow-x: hidden;
  scroll-behavior: smooth;
}

body.theme-pink {
  background: linear-gradient(135deg, #ff9a9e 0%, #fecfef 50%, #fecfef 100%);
}

body.theme-aqua {
  background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
}

.floating-shapes {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: -1;
  pointer-events: none;
}

.shape {
  position: absolute;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  animation: float 20s infinite linear;
}

.shape:nth-child(1) {
  width: 80px;
  height: 80px;
  top: 10%;
  left: 10%;
  animation-duration: 25s;
}

.shape:nth-child(2) {
  width: 120px;
  height: 120px;
  top: 70%;
  left: 80%;
  animation-duration: 30s;
  animation-delay: -5s;
}

.shape:nth-child(3) {
  width: 50px;
  height: 50px;
  top: 40%;
  left: 60%;
  animation-duration: 15s;
  animation-delay: -2s;
}

.shape:nth-child(4) {
  width: 100px;
  height: 100px;
  top: 80%;
  left: 20%;
  animation-duration: 22s;
  animation-delay: -8s;
}

.shape:nth-child(5) {
  width: 60px;
  height: 60px;
  top: 30%;
  left: 90%;
  animation-duration: 18s;
  animation-delay: -10s;
}

@keyframes float {
  0% {
    transform: translateY(0) rotate(0deg);
    opacity: 0.3;
  }
  50% {
    transform: translateY(-100px) rotate(180deg);
    opacity: 0.6;
  }
  100% {
    transform: translateY(0) rotate(360deg);
    opacity: 0.3;
  }
}

.back-button {
  position: fixed;
  top: 2rem;
  left: 2rem;
  background: linear-gradient(45deg, #ff6b6b, #ffd93d);
  color: white;
  border: none;
  padding: 0.8rem 1.5rem;
  font-size: 1rem;
  font-weight: bold;
  border-radius: 50px;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 10px 30px rgba(255, 107, 107, 0.4);
  z-index: 100;
}

.back-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 40px rgba(255, 107, 107, 0.6);
}

@media (max-width: 768px) {
  .back-button {
    top: 1rem;
    left: 1rem;
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
  }
}