#floatThemeToggle {
  position: fixed;
  top: 100px;
  right: 20px;
  width: 48px;
  height: 48px;
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 50%;
  cursor: pointer;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #f1f5f9;
  font-size: 1.2rem;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  transition: all 0.3s;
}
#floatThemeToggle:hover {
  background: #4361ee;
  color: #fff;
  border-color: #4361ee;
}
#app-content[data-theme="light"] #floatThemeToggle {
  background: #ffffff;
  border-color: #e2e8f0;
  color: #1e293b;
  box-shadow: 0 4px 24px rgba(67, 97, 238, 0.08);
}
#app-content[data-theme="light"] #floatThemeToggle:hover {
  background: #4361ee;
  color: #fff;
  border-color: #4361ee;
}

#backToTop {
  position: fixed;
  bottom: 30px;
  right: 20px;
  width: 48px;
  height: 48px;
  background: #4361ee;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.2rem;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
  transition: all 0.3s;
}
#backToTop.show {
  display: flex;
}
#backToTop:hover {
  background: #3a0ca3;
  transform: translateY(-3px);
}