/**
 * Theme Toggle Component
 * Based on XelaSphere Design Specifications
 */

/* ==================== */
/* THEME TOGGLE BUTTON */
/* ==================== */

.theme-toggle {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-fixed);
}

.theme-toggle__button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-in-out);
  position: relative;
  overflow: hidden;
}

.theme-toggle__button:hover {
  background: var(--bg-tertiary);
  border-color: var(--border-focus);
  box-shadow: var(--shadow-xl);
  transform: scale(1.05);
}

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

.theme-toggle__button:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
}

/* ==================== */
/* ICON CONTAINER */
/* ==================== */

.theme-toggle__icon-container {
  position: relative;
  width: 24px;
  height: 24px;
}

.theme-toggle__icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: var(--icon-md);
  color: var(--text-primary);
  transition: all var(--duration-normal) var(--ease-in-out);
}

/* Hide/show icons based on theme */
.theme-toggle__icon--sun {
  opacity: 0;
  transform: translate(-50%, -50%) rotate(90deg) scale(0);
}

.theme-toggle__icon--moon {
  opacity: 1;
  transform: translate(-50%, -50%) rotate(0deg) scale(1);
}

[data-theme="light"] .theme-toggle__icon--sun {
  opacity: 1;
  transform: translate(-50%, -50%) rotate(0deg) scale(1);
}

[data-theme="light"] .theme-toggle__icon--moon {
  opacity: 0;
  transform: translate(-50%, -50%) rotate(-90deg) scale(0);
}

/* ==================== */
/* TOOLTIP */
/* ==================== */

.theme-toggle__tooltip {
  position: absolute;
  bottom: calc(100% + var(--space-2));
  right: 0;
  padding: var(--space-2) var(--space-3);
  background: var(--tooltip-bg-color, #0a0908);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  color: var(--tooltip-text-color, #e8e8f0);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-fast) var(--ease-in-out);
}

.theme-toggle__button:hover .theme-toggle__tooltip {
  opacity: 1;
}

/* Arrow */
.theme-toggle__tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  right: var(--space-3);
  width: 0;
  height: 0;
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-top: 6px solid var(--tooltip-bg-color, #0a0908);
}

/* ==================== */
/* THEME TRANSITION OVERLAY */
/* ==================== */

.theme-transition-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-primary);
  opacity: 0;
  pointer-events: none;
  z-index: var(--z-modal);
  transition: opacity var(--duration-normal) var(--ease-in-out);
}

.theme-transition-overlay.is-active {
  opacity: 0.5;
}

/* ==================== */
/* MOBILE POSITIONING */
/* ==================== */

@media (max-width: 768px) {
  .theme-toggle {
    bottom: var(--space-4);
    right: var(--space-4);
  }

  .theme-toggle__button {
    width: 44px;
    height: 44px;
  }

  .theme-toggle__tooltip {
    right: auto;
    left: 50%;
    transform: translateX(-50%);
  }

  .theme-toggle__tooltip::after {
    right: auto;
    left: 50%;
    transform: translateX(-50%);
  }
}

/* Adjust when artifact panel is open */
body.artifact-panel-open .theme-toggle {
  right: calc(var(--artifact-panel-width, var(--panel-width-default, 480px)) + var(--space-6));
  transition: right var(--duration-normal) var(--ease-smooth);
}

body.artifact-panel-resizing .theme-toggle {
  transition: none;
}

@media (max-width: 768px) {
  body.artifact-panel-open .theme-toggle {
    right: var(--space-4);
  }
}

/* ==================== */
/* ACCESSIBILITY */
/* ==================== */

@media (prefers-reduced-motion: reduce) {
  .theme-toggle__button,
  .theme-toggle__icon,
  .theme-transition-overlay {
    transition: none;
  }

  body.artifact-panel-open .theme-toggle {
    transition: none;
  }
}

/* High contrast mode */
@media (prefers-contrast: high) {
  .theme-toggle__button {
    border-width: 2px;
  }
}