/* Custom colorful styles */
body {
  background: linear-gradient(to bottom right, #1e1b4b, #3b0764, #4c1d95);
  color: #e0e7ff;
}
.section-title {
  background: linear-gradient(to right, #c084fc, #db2777);
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  display: inline-block;
  font-size: 40px;
  font-weight: bold;
}
.card {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all 0.3s ease;
}
.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(192, 132, 252, 0.2);
  border-color: #c084fc;
}
.ai-card {
  background: linear-gradient(
    to bottom right,
    rgba(167, 139, 250, 0.1),
    rgba(124, 58, 237, 0.1)
  );
}
.coding-card {
  background: linear-gradient(
    to bottom right,
    rgba(34, 211, 238, 0.1),
    rgba(6, 182, 212, 0.1)
  );
}
.webdev-card {
  background: linear-gradient(
    to bottom right,
    rgba(59, 130, 246, 0.1),
    rgba(29, 78, 216, 0.1)
  );
}
.java-card {
  background: linear-gradient(
    to bottom right,
    rgba(251, 146, 60, 0.1),
    rgba(234, 88, 12, 0.1)
  );
}
.japanese-card {
  background: linear-gradient(
    to bottom right,
    rgba(236, 72, 153, 0.1),
    rgba(219, 39, 119, 0.1)
  );
}
.general-card {
  background: linear-gradient(
    to bottom right,
    rgba(192, 132, 252, 0.1),
    rgba(134, 25, 143, 0.1)
  );
}
.navbar {
  background: rgba(17, 24, 39, 0.8);
  backdrop-filter: blur(10px);
}
.hero-bg {
  background: linear-gradient(to bottom, rgba(76, 29, 149, 0.8), transparent);
}
#backToTop {
  display: none;
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 99;
  background: #c084fc;
  color: white;
  cursor: pointer;
  padding: 10px 15px;
  border-radius: 50%;
  font-size: 18px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
  transition: opacity 0.3s;
}
#backToTop:hover {
  background: #db2777;
}