.theme-toggle {
  position: absolute;
  top: 25px;
  right: 25px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 100;
  outline: none;
  transform: translateZ(30px);
}
.toggle-track {
  width: 76px;
  height: 38px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 38px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 8px;
  box-shadow: 0 4px 10px var(--glass-shadow);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: all 0.5s ease-in-out;
}
.icon-sun, .icon-moon {
  font-size: 16px;
  z-index: 1;
  transition: opacity 0.5s ease-in-out, transform 0.5s ease-in-out;
}
.icon-sun { opacity: 1; transform: scale(1); }
.icon-moon { opacity: 0.3; transform: scale(0.8); }
[data-theme="dark"] .icon-sun { opacity: 0.3; transform: scale(0.8); }
[data-theme="dark"] .icon-moon { opacity: 1; transform: scale(1); }
.toggle-thumb {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 30px;
  height: 30px;
  background: var(--primary-red);
  border-radius: 50%;
  z-index: 2;
  transition: transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1), background 0.8s ease-in-out;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}
[data-theme="dark"] .toggle-thumb { transform: translateX(38px); }
.theme-toggle:hover .toggle-track {
  box-shadow: 0 6px 15px var(--glass-shadow);
  transform: scale(1.05);
}