:root {
  --nav-menu-size: 56px;
}

comic-nav-menu {
  display: contents;
}

comic-nav-menu .nav-buttons {
  position: fixed;
  bottom: calc(var(--spacing-2) + env(safe-area-inset-bottom, 0px));
  right: var(--spacing-2);
  display: flex;
  align-items: flex-end;
  gap: var(--spacing-1);
  z-index: var(--z-index-nav-menu);
}

/* Prevent transitions on the menu during page transitions */
comic-nav-menu .nav-buttons {
  view-transition-name: no-transition;
}

/* Base styles for all circular nav buttons */
comic-nav-menu .nav-button-base {
  width: var(--nav-menu-size);
  height: var(--nav-menu-size);
  border-radius: 50%;
  background: var(--color-surface-overlay);
  border: none;
  box-shadow: 0 2px 8px var(--color-shadow);
  cursor: pointer;
  font-size: var(--font-xl);
  transition: background 0.2s, transform 0.2s;
}

comic-nav-menu .nav-button-base:hover,
comic-nav-menu .nav-page-select-wrapper:hover .nav-button-base {
  background: var(--color-surface-base);
  transform: scale(1.05);
}

comic-nav-menu .nav-button-base:active,
comic-nav-menu .nav-page-select-wrapper:active .nav-button-base {
  transform: scale(0.95);
}

/* Regular navigation button */
comic-nav-menu .nav-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-body);
}

comic-nav-menu .nav-btn.disabled {
  color: var(--color-text-disabled);
  pointer-events: none;
  opacity: 0.5;
  background: var(--color-surface-overlay);
  transform: none;
}

comic-nav-menu .nav-btn-icon {
  display: block;
  line-height: 1;
}

/* Expanded navigation menu */
comic-nav-menu .expanded-nav-menu {
  position: absolute;
  bottom: 64px;
  right: 64px;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-1);
  opacity: 0;
  pointer-events: none;
  transform: translateY(20px);
  transition: opacity 0.3s, transform 0.3s;
}

comic-nav-menu .expanded-nav-menu.active {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

/* Navigation menu item with label */
comic-nav-menu .nav-menu-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-1);
  justify-content: flex-end;
}

comic-nav-menu .nav-menu-label {
  background: transparent;
  padding: var(--spacing-0-5) var(--spacing-2);
  border-radius: var(--radius);
  color: var(--color-text-body);
  font-size: var(--font-sm);
  white-space: nowrap;
  font-weight: 500;
  text-align: right;
}

/* Page select dropdown wrapper */
comic-nav-menu .nav-page-select-wrapper {
  position: relative;
  width: var(--nav-menu-size);
  height: var(--nav-menu-size);
}

/* Page select dropdown. This is transparent but will
   handle user clicking the component.
*/
comic-nav-menu .nav-page-select {
  color: transparent;
  text-align: center;
  appearance: none;
  padding: 0;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

/* Label that shows # symbol. This is rendered on top
   of a invisible select because we don't want to show
   the normal select GUI when it is closed.
*/
comic-nav-menu .nav-page-select-label {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--color-text-body);
  font-size: var(--font-xl);
  pointer-events: none;
}