/* ============================================
   THEME TOGGLE — Pill button, frosted glass
   ============================================ */
.theme-toggle {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border-subtle);
  border-radius: 20px;
  background: var(--surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--text-secondary);
  cursor: pointer;
  transition: border-color 0.3s ease, color 0.3s ease, background 0.3s ease, transform 0.15s ease;
  padding: 0;
  outline: none;
}

.theme-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: scale(1.06);
}

.theme-toggle:active {
  transform: scale(0.95);
}

.theme-toggle svg {
  display: block;
}