/* === Mobile Bottom Tab Bar (FN-1108) ===
   Fixed bottom navigation for mobile viewports (≤768px).
   Sits at the very bottom; ExecutorStatusBar appears above when visible.
   Uses safe-area-inset-bottom for notched devices. */

/* Mobile nav height token - used by nav bar, executor status bar, and content padding */
:root {
  --mobile-nav-height: 44px;
}

.mobile-nav-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 45;
  display: none;
  align-items: stretch;
  background: var(--surface);
  border-top: 1px solid var(--border);
  min-height: var(--mobile-nav-height);
  padding-bottom: env(safe-area-inset-bottom, 0px);
  box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.15);
}

@media (max-width: 768px) {
  .mobile-nav-bar {
    display: flex;
  }

  .mobile-nav-bar--with-footer {
    bottom: 0;
  }

  /* Content padding: mobile nav only (no footer) */
  .project-content--with-mobile-nav:not(.project-content--with-footer) {
    padding-bottom: calc(var(--mobile-nav-height) + env(safe-area-inset-bottom, 0px) + var(--standalone-bottom-gap));
  }

  /* Content padding: both mobile nav AND footer */
  .project-content--with-footer.project-content--with-mobile-nav {
    padding-bottom: calc(var(--executor-footer-height) + var(--mobile-nav-height) + env(safe-area-inset-bottom, 0px) + var(--standalone-bottom-gap));
  }
}

/* Individual tab button */
.mobile-nav-tab {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  min-width: 36px;
  min-height: 36px;
  padding: 6px 0;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 10px;
  line-height: 1.2;
  cursor: pointer;
  transition: color 0.15s ease;
  position: relative;
  -webkit-tap-highlight-color: transparent;
}

.mobile-nav-tab:active {
  color: var(--text-primary);
}

.mobile-nav-tab--active {
  color: var(--accent);
}

.mobile-nav-tab svg {
  width: 22px;
  height: 22px;
}

.mobile-nav-tab-label {
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  font-size: 10px;
  line-height: 1.2;
  white-space: nowrap;
}

.mobile-nav-tab-badge {
  position: absolute;
  top: calc(var(--space-xs) / 2);
  right: calc(50% - var(--space-md));
  min-width: var(--space-lg);
  height: var(--space-lg);
  padding: 0 var(--space-xs);
  font-size: 9px;
  font-weight: 600;
  line-height: var(--space-lg);
  text-align: center;
  background: var(--color-error);
  color: var(--fab-text);
  border-radius: var(--radius-md);
}

/* === Mobile More Sheet (Bottom Drawer) === */

.mobile-more-sheet-backdrop {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: rgba(0, 0, 0, 0.5);
  animation: mobile-more-backdrop-in 0.2s ease;
}

.mobile-more-sheet {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 91;
  background: var(--surface);
  border-top-left-radius: var(--radius-lg, 12px);
  border-top-right-radius: var(--radius-lg, 12px);
  padding: 16px 0;
  /* Additive safe-area: base padding + device safe-area inset ensures last item
     (Settings) is reachable on real mobile viewports including iOS home indicator. */
  padding-bottom: calc(16px + env(safe-area-inset-bottom, 0px));
  max-height: 85vh;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  animation: mobile-more-sheet-in 0.25s ease;
}

@keyframes mobile-more-backdrop-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes mobile-more-sheet-in {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}

.mobile-more-sheet-handle {
  width: 36px;
  height: 4px;
  border-radius: 2px;
  background: var(--border);
  margin: 0 auto 12px;
}

.mobile-more-sheet-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  padding: 0 16px 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.mobile-more-item {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 12px 16px;
  min-height: 36px;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 15px;
  cursor: pointer;
  transition: background 0.15s ease;
  -webkit-tap-highlight-color: transparent;
  position: relative;
}

.mobile-more-item:active {
  background: var(--surface-hover);
}

.mobile-more-item svg {
  width: 20px;
  height: 20px;
  color: var(--text-muted);
}

.mobile-more-item-badge {
  margin-left: auto;
  min-width: 20px;
  height: 20px;
  border-radius: 10px;
  background: var(--accent);
  color: var(--surface);
  font-size: 11px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 6px;
}

.mobile-more-item-badge--unread {
  background: var(--color-error);
  color: var(--fab-text);
}

.mobile-more-separator {
  height: 1px;
  background: var(--border);
  margin: 8px 16px;
}

.mobile-more-split-row {
  display: flex;
  flex-direction: row;
  align-items: stretch;
}

.mobile-more-split-primary {
  flex: 1;
  min-width: 0;
}

.mobile-more-split-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px;
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.mobile-more-split-toggle:hover {
  background: var(--card);
}

.mobile-more-chevron {
  color: var(--text-muted);
  transition: transform var(--transition-fast);
}

.mobile-more-chevron--open {
  transform: rotate(90deg);
}

.mobile-more-submenu {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-left: var(--space-md);
}

.mobile-more-subitem {
  padding-left: 28px;
}

.mobile-more-submenu-loading {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 8px 12px 8px 28px;
  color: var(--text-muted);
  font-size: 12px;
}

.mobile-more-subitem--manage {
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  margin-top: 2px;
  padding-top: 8px;
}

/* FN-1137: Quick scripts dropdown mobile viewport handling */
@media (max-width: 768px) {
  .quick-scripts-dropdown__menu {
    max-height: min(60vh, 400px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }
}

/* FN-1137: mobile dep dropdown overflow handling */
@media (max-width: 768px) {
  .dep-dropdown {
    max-height: min(50vh, 240px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }
}

/* FN-1137: file browser long-press and mobile context menu touch targets */
.file-node {
  touch-action: manipulation;
}

.file-node--long-pressing {
  background: var(--card-hover);
}

@media (max-width: 768px) {
  .file-browser-context-menu__item {
    min-height: 36px;
  }
}

/* FN-1137: iOS momentum scrolling conventions */
.dep-dropdown,
.model-combobox-list,
.quick-scripts-dropdown__list,
.file-browser-list {
  -webkit-overflow-scrolling: touch;
}

@media (max-width: 768px) {
  /* iOS momentum scrolling for all modal content areas */
  .modal-content,
  .modal-body,
  .modal-scroll,
  .task-detail-content,
  .agent-log-content,
  .file-browser-list,
  .settings-content,
  .activity-log-content {
    -webkit-overflow-scrolling: touch;
  }
}