/* Dark Theme Background */
body.dark-theme {
  background: linear-gradient(135deg, #050510 0%, #0e0824 50%, #1a0a2f 100%);
  color: #f0f0f0;
}

/* ================== THEME TOGGLE ================== */
.theme-toggle-wrapper {
  position: fixed;
  top: 15px;
  right: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: bold;
  color: white;
  z-index: 2000;
}

.mode-label {
  font-size: 14px;
  color: white;
}

/* Toggle bar only */
.theme-toggle {
  width: 60px;
  height: 30px;
  background: #ccc;
  border-radius: 30px;
  cursor: pointer;
  position: relative;
  transition: background 0.3s ease;
  box-shadow: 0 2px 6px rgba(0,0,0,0.2);
}

.toggle-circle {
  width: 24px;
  height: 24px;
  background: white;
  border-radius: 50%;
  position: absolute;
  top: 3px;
  left: 3px;
  transition: transform 0.3s ease, background 0.3s ease;
}

/* Study mode bar */
body.dark-theme .theme-toggle {
  background: darkgreen;
}

body.dark-theme .toggle-circle {
  transform: translateX(30px);
  background: #222;
}