/**
 * DarkModeToggle Component
 * Floating button with sun/moon icon, fixed bottom-right
 */

.dark-mode-toggle {
  display: none !important;
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border-color, #e5e7eb);
  background: var(--bg-primary, #ffffff);
  color: var(--text-secondary, #6b7280);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  z-index: 999;
  padding: 0;
}

.dark-mode-toggle:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  color: var(--text-primary, #1d1d1b);
}

.dark-mode-toggle:focus-visible {
  outline: 2px solid #3b82f6;
  outline-offset: 2px;
}

html.dark-mode .dark-mode-toggle:focus-visible {
  outline-color: #60a5fa;
}

.dark-mode-toggle svg {
  width: 20px;
  height: 20px;
  transition: transform 0.3s ease;
}

.dark-mode-toggle:hover svg {
  transform: rotate(15deg);
}

.dark-mode-toggle__sun,
.dark-mode-toggle__moon {
  display: none;
}

/* Light mode: show sun icon (click to go dark) */
.dark-mode-toggle__moon {
  display: block;
}
.dark-mode-toggle__sun {
  display: none;
}

/* Dark mode: show moon icon (already dark, show sun to go light) */
html.dark-mode .dark-mode-toggle__sun {
  display: block;
}
html.dark-mode .dark-mode-toggle__moon {
  display: none;
}

html.dark-mode .dark-mode-toggle {
  border-color: #2d3640;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

html.dark-mode .dark-mode-toggle:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

/* Mobile: slightly smaller and closer to edge */
@media (max-width: 640px) {
  .dark-mode-toggle {
    bottom: 1rem;
    right: 1rem;
    width: 40px;
    height: 40px;
  }

  .dark-mode-toggle svg {
    width: 18px;
    height: 18px;
  }
}

/* Print: hide toggle */
@media print {
  .dark-mode-toggle {
    display: none;
  }
}