/**
 * Funky.MobileCore Styles
 *
 * Fixed bottom navigation bar for mobile/tablet devices.
 * Provides touch-accessible access to keyboard-only features.
 * Theme-aware using --pro-* CSS custom properties.
 */

/* ==========================================================================
   CSS Custom Properties
   ========================================================================== */

:root {
  /* Layout */
  --mobile-core-height: 56px;
  --mobile-core-z-index: 1050;

  /* Colors - uses theme surface/text colors */
  --mobile-core-bg: var(--pro-bg-elevated);
  --mobile-core-border: var(--pro-border-color);
  --mobile-core-shadow: var(--pro-shadow-lg);

  /* Action buttons */
  --mobile-core-action-color: var(--pro-text-secondary);
  --mobile-core-action-color-active: var(--pro-accent-primary);
  --mobile-core-action-min-width: 64px;
  --mobile-core-action-max-width: 96px;

  /* Icon and label */
  --mobile-core-icon-size: 20px;
  --mobile-core-label-size: 10px;

  /* Badge */
  --mobile-core-badge-bg: var(--pro-danger);
  --mobile-core-badge-color: var(--pro-text-on-accent);
  --mobile-core-badge-size: 16px;

  /* Overflow panel */
  --mobile-core-overflow-bg: var(--pro-bg-elevated);
  --mobile-core-overflow-shadow: var(--pro-shadow-xl);
  --mobile-core-overflow-radius: 16px;
  --mobile-core-backdrop-bg: var(--pro-bg-overlay);

  /* Animation */
  --mobile-core-transition: 0.3s ease;
}

/* ==========================================================================
   Base Container
   ========================================================================== */

.mobile-core {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: var(--mobile-core-z-index);
  background: var(--mobile-core-bg);
  border-top: 1px solid var(--mobile-core-border);
  box-shadow: var(--mobile-core-shadow);
  display: none;
  transform: translateY(0);
  transition: transform var(--mobile-core-transition);
  /* iOS safe area */
  padding-bottom: env(safe-area-inset-bottom, 0);
}

/* Active state - shown on mobile breakpoint */
.mobile-core--active {
  display: block;
}

/* Hidden state - scrolled out of view */
.mobile-core--hidden {
  transform: translateY(100%);
}

/* ==========================================================================
   Actions Container
   ========================================================================== */

.mobile-core__actions {
  display: flex;
  justify-content: space-around;
  align-items: center;
  height: var(--mobile-core-height);
  padding: 0 8px;
}

/* ==========================================================================
   Action Button
   ========================================================================== */

.mobile-core__action {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: var(--mobile-core-action-min-width);
  max-width: var(--mobile-core-action-max-width);
  height: 100%;
  padding: 4px 8px;
  background: transparent;
  border: none;
  color: var(--mobile-core-action-color);
  cursor: pointer;
  transition: color 0.2s ease;
  -webkit-tap-highlight-color: transparent;
  /* Minimum touch target */
  min-height: 48px;
}

.mobile-core__action:hover {
  color: var(--mobile-core-action-color-active);
}

.mobile-core__action:active,
.mobile-core__action--active {
  color: var(--mobile-core-action-color-active);
}

/* Focus visible for keyboard navigation */
.mobile-core__action:focus-visible {
  outline: 2px solid var(--pro-focus-ring);
  outline-offset: -2px;
  border-radius: 4px;
}

/* Disabled state */
.mobile-core__action[disabled],
.mobile-core__action--disabled {
  opacity: 0.5;
  pointer-events: none;
}

/* ==========================================================================
   Action Icon
   ========================================================================== */

.mobile-core__action-icon {
  font-size: var(--mobile-core-icon-size);
  line-height: 1;
  margin-bottom: 2px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ==========================================================================
   Action Label
   ========================================================================== */

.mobile-core__action-label {
  font-size: var(--mobile-core-label-size);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
  line-height: 1.2;
}

/* ==========================================================================
   Badge
   ========================================================================== */

.mobile-core__action-badge {
  position: absolute;
  top: -6px;
  right: -8px;
  min-width: var(--mobile-core-badge-size);
  height: var(--mobile-core-badge-size);
  padding: 0 4px;
  font-size: 10px;
  font-weight: 600;
  line-height: var(--mobile-core-badge-size);
  text-align: center;
  color: var(--mobile-core-badge-color);
  background: var(--mobile-core-badge-bg);
  border-radius: calc(var(--mobile-core-badge-size) / 2);
}

/* ==========================================================================
   Overflow Menu
   ========================================================================== */

.mobile-core__overflow {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  top: 0;
  z-index: calc(var(--mobile-core-z-index) + 1);
  display: none;
  pointer-events: none;
}

/* Open state */
.mobile-core--overflow-open .mobile-core__overflow {
  display: block;
  pointer-events: auto;
}

/* Backdrop */
.mobile-core__overflow-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--mobile-core-backdrop-bg);
  opacity: 0;
  transition: opacity var(--mobile-core-transition);
}

.mobile-core--overflow-open .mobile-core__overflow-backdrop {
  opacity: 1;
}

/* Panel */
.mobile-core__overflow-panel {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--mobile-core-overflow-bg);
  border-radius: var(--mobile-core-overflow-radius) var(--mobile-core-overflow-radius) 0 0;
  box-shadow: var(--mobile-core-overflow-shadow);
  padding: 16px;
  padding-bottom: calc(16px + env(safe-area-inset-bottom, 0));
  transform: translateY(100%);
  transition: transform var(--mobile-core-transition);
  max-height: 60vh;
  overflow-y: auto;
}

.mobile-core--overflow-open .mobile-core__overflow-panel {
  transform: translateY(0);
}

/* Panel handle indicator */
.mobile-core__overflow-panel::before {
  content: '';
  display: block;
  width: 40px;
  height: 4px;
  background: var(--pro-border-color);
  border-radius: 2px;
  margin: 0 auto 16px;
}

/* Overflow item */
.mobile-core__overflow-item {
  display: flex;
  align-items: center;
  width: 100%;
  padding: 12px 16px;
  background: transparent;
  border: none;
  border-radius: 8px;
  color: var(--pro-text-primary);
  cursor: pointer;
  transition: background-color 0.2s ease;
  text-align: left;
  gap: 12px;
  min-height: 48px;
}

.mobile-core__overflow-item:hover {
  background: var(--pro-bg-tertiary);
}

.mobile-core__overflow-item:active {
  background: var(--pro-bg-secondary);
}

.mobile-core__overflow-item:focus-visible {
  outline: 2px solid var(--pro-focus-ring);
  outline-offset: -2px;
}

/* Overflow item icon - horizontal layout */
.mobile-core__overflow-item .mobile-core__action-icon {
  font-size: 18px;
  margin-bottom: 0;
  flex-shrink: 0;
}

/* Overflow item label - horizontal layout */
.mobile-core__overflow-item .mobile-core__action-label {
  font-size: 14px;
  font-weight: 400;
  text-transform: none;
  letter-spacing: normal;
}

/* ==========================================================================
   Reduced Motion
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  .mobile-core,
  .mobile-core__action,
  .mobile-core__overflow-backdrop,
  .mobile-core__overflow-panel {
    transition: none;
  }
}

/* ==========================================================================
   Print - Hide on Print
   ========================================================================== */

@media print {
  .mobile-core {
    display: none !important;
  }
}

/* ==========================================================================
   Hide duplicate controls when MobileCore is active
   These controls are now accessible via the mobile nav bar
   ========================================================================== */

/* Hide TOC toggle button when mobile nav is visible (it's in the nav bar) */
.mobile-core--active ~ .main-wrapper .funky-markdown__toc-toggle,
.mobile-core--active ~ * .funky-markdown__toc-toggle,
body:has(.mobile-core--active) .funky-markdown__toc-toggle {
  display: none !important;
}