/* ================================================
   Responsive Overrides
   ================================================ */

/* Tablet: 769–1024px */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }

  .editor-ai-panel {
    width: 280px;
    min-width: 280px;
  }

  .editor-sidebar {
    width: 200px;
    min-width: 180px;
  }

  .page-content {
    padding: var(--space-4);
  }
}

/* Mobile: ≤ 768px */
@media (max-width: 768px) {
  :root {
    --sidebar-width: 280px;
  }

  /* Sidebar becomes off-canvas */
  .sidebar {
    transform: translateX(-100%);
    z-index: calc(var(--z-overlay) + 1);
    box-shadow: var(--shadow-xl);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .sidebar-overlay.active {
    display: block;
  }

  .sidebar-toggle {
    display: none;
  }

  .app-main {
    margin-left: 0 !important;
  }

  .mobile-menu-btn {
    display: flex;
  }

  /* Topbar */
  .topbar {
    padding: 0 var(--space-4);
  }

  .topbar-center {
    display: none;
  }

  /* Page content */
  .page-content {
    padding: var(--space-4);
  }

  .page-header h1 {
    font-size: var(--text-2xl);
  }

  /* Grid */
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }

  .grid-auto {
    grid-template-columns: repeat(auto-fill, minmax(100%, 1fr));
  }

  .grid-auto-sm {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  }

  /* Editor - stack vertically */
  .editor-layout {
    flex-direction: column;
    height: auto;
    min-height: calc(100vh - var(--topbar-height));
  }

  .editor-sidebar {
    width: 100%;
    min-width: 100%;
    max-height: 200px;
    border-right: none;
    border-bottom: 1px solid var(--border);
    display: none;
  }

  .editor-sidebar.mobile-open {
    display: flex;
  }

  .editor-content {
    min-height: 60vh;
  }

  .editor-ai-panel {
    width: 100%;
    min-width: 100%;
    border-left: none;
    border-top: 1px solid var(--border);
    max-height: 50vh;
  }

  .editor-ai-panel.collapsed {
    transform: translateY(100%);
    max-height: 0;
  }

  .editor-paper {
    padding: var(--space-4) var(--space-5);
    border-radius: 0;
    border: none;
    box-shadow: none;
  }

  .editor-writing-area {
    padding: var(--space-4) 0;
  }

  .editor-toolbar {
    overflow-x: auto;
    flex-wrap: nowrap;
    padding: var(--space-2) var(--space-3);
  }

  /* Tabs */
  .tabs {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .tab {
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-sm);
  }

  /* Modal */
  .modal {
    max-width: 100%;
    max-height: 90vh;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    margin-top: auto;
  }

  .modal-overlay {
    align-items: flex-end;
    padding: 0;
  }

  /* Cards */
  .project-card-cover {
    height: 100px;
  }

  .character-card {
    flex-direction: row;
    text-align: left;
    gap: var(--space-4);
    padding: var(--space-4);
  }

  .character-card .char-avatar {
    width: 48px;
    height: 48px;
    font-size: 1.3rem;
    margin-bottom: 0;
  }

  .character-card .char-tags {
    justify-content: flex-start;
  }

  /* Stats grid */
  .stat-card {
    flex-direction: row;
    align-items: center;
    gap: var(--space-4);
  }

  .stat-card .stat-value {
    font-size: var(--text-2xl);
  }

  /* Scene cards (kanban) */
  .kanban-board {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  /* Toast */
  .toast-container {
    left: var(--space-4);
    right: var(--space-4);
    top: auto;
    bottom: calc(var(--mobile-bottom-bar) + var(--space-4));
  }

  .toast {
    min-width: 100%;
  }

  /* Hide on mobile */
  .hide-mobile { display: none !important; }
}

/* Show on mobile only */
@media (min-width: 769px) {
  .show-mobile-only { display: none !important; }
}

/* Desktop Wide: > 1440px */
@media (min-width: 1441px) {
  .page-content {
    padding: var(--space-8);
  }

  .editor-paper {
    max-width: 800px;
  }
}

/* Mobile Bottom Navigation */
.mobile-bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--mobile-bottom-bar);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-top: 1px solid var(--border);
  z-index: var(--z-sticky);
  padding: 0 var(--space-2);
}

@media (max-width: 768px) {
  .mobile-bottom-nav {
    display: flex;
    align-items: center;
    justify-content: space-around;
  }

  body {
    padding-bottom: var(--mobile-bottom-bar);
  }
}

.bottom-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: var(--space-2);
  color: var(--text-muted);
  font-size: var(--text-xs);
  text-decoration: none;
  transition: color var(--transition-fast);
  flex: 1;
  cursor: pointer;
}

.bottom-nav-item:hover,
.bottom-nav-item.active {
  color: var(--accent-primary);
}

.bottom-nav-item .nav-icon {
  font-size: 1.3rem;
}

/* Print */
@media print {
  .sidebar, .topbar, .editor-toolbar, .editor-statusbar,
  .editor-ai-panel, .mobile-bottom-nav {
    display: none !important;
  }

  .app-main {
    margin-left: 0 !important;
  }

  .editor-paper {
    max-width: 100%;
    border: none;
    box-shadow: none;
    padding: 0;
  }

  body {
    background: #fff;
    color: #000;
  }
}