/* Main Styles */
@import url('variables.css');
@import url('components.css');

/* Full Mobile Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
  text-size-adjust: 100%;
  touch-action: manipulation;
  overflow-x: hidden !important;
  max-width: 100%;
  width: 100%;
  position: relative;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-md);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  transition: background-color var(--transition-normal), color var(--transition-normal);
  min-height: 100vh;
  min-height: -webkit-fill-available;
  text-rendering: optimizeLegibility;
  -webkit-tap-highlight-color: transparent;
  overscroll-behavior: none;
  overflow-x: hidden !important;
  max-width: 100%;
  width: 100%;
  position: relative;
}

/* Prevent iOS input zoom */
@media screen and (max-width: 768px) {
  input[type="text"],
  input[type="search"],
  input[type="email"],
  input[type="tel"],
  input[type="url"],
  input[type="password"],
  textarea,
  select {
    font-size: 16px !important;
  }
}

/* Ensure images are responsive */
img, video, svg {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Button reset for mobile */
button {
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

/* Layout */
.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  max-width: 100%;
  overflow-x: hidden;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background-color: var(--color-bg-primary);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-md) var(--space-lg);
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
  max-width: 100%;
  overflow-x: hidden;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-content-width);
  margin: 0 auto;
  gap: var(--space-lg);
}

/* Header Actions - groups sidebar toggle and theme toggle */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  text-decoration: none;
}

.logo-icon {
  font-size: var(--font-size-2xl);
}

/* Search */
.search-container {
  flex: 1;
  max-width: 500px;
  position: relative;
}

.search-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: var(--space-md);
  color: var(--color-text-muted);
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: var(--space-sm) var(--space-lg);
  padding-left: 2.75rem;
  font-size: var(--font-size-md);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-full);
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-normal);
}

.search-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-light);
}

.search-input::placeholder {
  color: var(--color-text-muted);
}

.search-clear {
  position: absolute;
  right: var(--space-sm);
  padding: var(--space-xs);
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  border-radius: var(--radius-full);
  display: none;
  transition: color var(--transition-fast);
}

.search-clear.visible {
  display: flex;
}

.search-clear:hover {
  color: var(--color-text-primary);
}

/* Theme Toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.theme-toggle:hover {
  background-color: var(--color-bg-tertiary);
}

.theme-toggle-icon {
  font-size: var(--font-size-lg);
  transition: transform var(--transition-normal);
}

.theme-toggle:hover .theme-toggle-icon {
  transform: rotate(15deg);
}

/* Categories Navigation */
.categories-nav {
  background-color: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-sm) var(--space-lg);
  overflow: visible;
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
  max-width: 100%;
}

.categories-nav::-webkit-scrollbar {
  height: 6px;
}

.categories-nav::-webkit-scrollbar-track {
  background: var(--color-bg-tertiary);
}

.categories-nav::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: var(--radius-full);
}

.categories-list {
  display: flex;
  gap: var(--space-sm);
  max-width: var(--max-content-width);
  margin: 0 auto;
  list-style: none;
  position: relative;
  flex-wrap: nowrap;
  align-items: center;
}

.categories-list > li {
  flex-shrink: 0;
}

.categories-list > li.category-overflow-hidden {
  display: none;
}

.category-btn {
  padding: var(--space-sm) var(--space-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  background: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  white-space: nowrap;
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.category-btn:hover {
  color: var(--color-text-primary);
  background-color: var(--color-bg-hover);
}

.category-btn.active {
  color: var(--color-accent);
  background-color: var(--color-accent-light);
}

/* Category More Dropdown */
.category-more-container {
  position: relative;
  flex-shrink: 0;
  margin-left: auto;
}

.category-more-container.hidden {
  display: none;
}

.category-more-btn {
  padding: var(--space-sm) var(--space-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  white-space: nowrap;
  transition: color var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.category-more-btn:hover {
  color: var(--color-text-primary);
  background-color: var(--color-bg-hover);
  border-color: var(--color-text-muted);
}

.category-more-btn.has-active {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.category-more-btn .more-arrow {
  font-size: var(--font-size-xs);
  transition: transform var(--transition-fast);
}

.category-more-btn.open .more-arrow {
  transform: rotate(180deg);
}

.category-more-dropdown {
  position: absolute;
  top: calc(100% + var(--space-xs));
  right: 0;
  min-width: 200px;
  max-height: 400px;
  overflow-y: auto;
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-dropdown);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity var(--transition-fast), visibility var(--transition-fast), transform var(--transition-fast);
}

.category-more-dropdown.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.category-more-dropdown ul {
  list-style: none;
  padding: var(--space-xs);
  margin: 0;
}

.category-more-dropdown li {
  margin: 0;
}

.category-more-dropdown .category-btn {
  width: 100%;
  text-align: left;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
}

.category-more-dropdown .category-btn:hover {
  background-color: var(--color-bg-secondary);
}

.category-more-dropdown .category-btn.active {
  background-color: var(--color-accent-light);
}

/* Scrollbar for dropdown */
.category-more-dropdown::-webkit-scrollbar {
  width: 6px;
}

.category-more-dropdown::-webkit-scrollbar-track {
  background: var(--color-bg-secondary);
  border-radius: var(--radius-md);
}

.category-more-dropdown::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: var(--radius-full);
}

/* Main Content */
.main-content {
  flex: 1;
  display: flex;
  max-width: var(--max-content-width);
  margin: 0 auto;
  width: 100%;
  padding: var(--space-lg);
  gap: var(--space-lg);
  overflow-x: hidden;
}

.characters-panel {
  flex: 1;
  min-width: 0;
  max-width: 100%;
  overflow-x: hidden;
}

/* Section Headers */
.section-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--color-border-light);
}

.section-icon {
  font-size: var(--font-size-lg);
}

.section-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.section-count {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-left: auto;
}

/* Character Grid */
.char-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(var(--char-cell-size), 1fr));
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
  max-width: 100%;
  overflow-x: hidden;
}

.char-cell {
  position: relative;
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-2xl);
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast),
              background-color var(--transition-fast), border-color var(--transition-fast);
  user-select: none;
}

.char-cell:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
  background-color: var(--color-bg-primary);
}

.char-cell:active {
  transform: translateY(0);
}

.char-cell.selected {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px var(--color-accent-light);
}

.char-cell.copied {
  animation: pulse 0.3s ease;
}

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.1); background-color: var(--color-accent-light); }
  100% { transform: scale(1); }
}

.char-favorite-btn {
  position: absolute;
  top: 2px;
  right: 2px;
  padding: 2px;
  font-size: var(--font-size-xs);
  background: none;
  border: none;
  cursor: pointer;
  opacity: 0;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
  color: var(--color-text-muted);
}

.char-cell:hover .char-favorite-btn,
.char-favorite-btn.is-favorite {
  opacity: 1;
}

.char-favorite-btn.is-favorite {
  color: var(--color-favorite);
}

.char-favorite-btn:hover {
  transform: scale(1.2);
}

/* Section "More" Button */
.section-more-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  margin-top: var(--space-sm);
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-accent);
  text-decoration: none;
  background: none;
  border: none;
  cursor: pointer;
  transition: color var(--transition-fast), gap var(--transition-fast);
}

.section-more-btn:hover {
  color: var(--color-accent-hover);
  gap: var(--space-sm);
}

.section-more-btn .more-arrow {
  transition: transform var(--transition-fast);
}

.section-more-btn:hover .more-arrow {
  transform: translateX(3px);
}

/* Details Sidebar */
.details-sidebar {
  position: fixed;
  top: 0;
  right: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background-color: var(--color-bg-primary);
  border-left: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-modal);
  transform: translateX(100%);
  transition: transform var(--transition-normal), background-color var(--transition-normal);
  display: flex;
  flex-direction: column;
}

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

.details-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.details-title {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
}

.details-close {
  padding: var(--space-xs);
  background: none;
  border: none;
  font-size: var(--font-size-lg);
  cursor: pointer;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.details-close:hover {
  color: var(--color-text-primary);
  background-color: var(--color-bg-secondary);
}

.details-content {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-lg);
}

.details-preview {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  padding: var(--space-xl);
  margin-bottom: var(--space-lg);
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
}

.details-name {
  text-align: center;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--space-lg);
  color: var(--color-text-primary);
}

.details-info-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.details-info-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-md);
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-md);
}

.details-info-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.details-info-value {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
}

.details-copy-btn {
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--font-size-xs);
  background-color: var(--color-bg-tertiary);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.details-copy-btn:hover {
  background-color: var(--color-bg-hover);
}

.details-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.details-action-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md);
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-medium);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.details-action-btn:hover {
  transform: translateY(-1px);
}

.details-action-btn.primary {
  background-color: var(--color-accent);
  color: white;
}

.details-action-btn.primary:hover {
  background-color: var(--color-accent-hover);
}

.details-action-btn.secondary {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
}

.details-action-btn.secondary:hover {
  background-color: var(--color-bg-tertiary);
}

.details-action-btn.favorite.is-favorite {
  background-color: var(--color-favorite);
  color: white;
}

/* Sidebar Overlay */
.sidebar-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: calc(var(--z-modal) - 1);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
}

.sidebar-overlay.visible {
  opacity: 1;
  visibility: visible;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  pointer-events: none;
  max-width: calc(100% - 2rem);
  width: auto;
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  background-color: var(--color-text-primary);
  color: var(--color-bg-primary);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-toast);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  animation: toastIn 0.3s ease, toastOut 0.3s ease 2s forwards;
  pointer-events: auto;
}

.toast-char {
  font-size: var(--font-size-lg);
}

@keyframes toastIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes toastOut {
  from {
    opacity: 1;
    transform: translateY(0);
  }
  to {
    opacity: 0;
    transform: translateY(-10px);
  }
}

/* Empty States */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-2xl);
  text-align: center;
  color: var(--color-text-muted);
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: var(--space-md);
}

.empty-state-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--space-sm);
  color: var(--color-text-secondary);
}

.empty-state-description {
  font-size: var(--font-size-sm);
}

/* Search Results Highlight */
.char-cell.search-match {
  border-color: var(--color-accent);
  background-color: var(--color-accent-light);
}

/* Favorites Section */
.favorites-section,
.recent-section {
  margin-bottom: var(--space-xl);
}

.favorites-section:empty,
.recent-section:empty {
  display: none;
}

/* Hidden utility class */
.hidden {
  display: none !important;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .details-sidebar {
    width: 100%;
    max-width: 400px;
  }
}

@media (max-width: 768px) {
  /* App container takes full viewport */
  .app-container {
    min-height: 100vh;
    min-height: -webkit-fill-available;
  }

  /* More compact header */
  .header {
    padding: var(--space-sm) var(--space-md);
  }

  .header-content {
    flex-wrap: wrap;
    gap: var(--space-sm);
  }

  .logo {
    order: 1;
    font-size: var(--font-size-lg);
  }

  .logo-icon {
    font-size: var(--font-size-xl);
  }

  /* Header actions group - positioned after logo on mobile */
  .header-actions {
    order: 2;
  }

  /* Compact theme toggle - icon only */
  .theme-toggle {
    padding: var(--space-sm);
    min-width: 44px;
    min-height: 44px;
    justify-content: center;
  }

  .theme-toggle-label {
    display: none;
  }

  /* Properly sized search bar for mobile */
  .search-container {
    order: 3;
    flex-basis: 100%;
    max-width: 100%;
    width: 100%;
  }

  .header-content {
    padding: 0;
    width: 100%;
  }

  .search-input {
    padding: var(--space-sm) var(--space-md);
    padding-left: 2.5rem;
    font-size: var(--font-size-sm);
    min-height: 44px;
  }

  .main-content {
    padding: var(--space-sm);
    width: 100%;
    max-width: 100%;
    overflow-x: hidden;
  }

  /* Character Grid - Tablet/Small screens */
  .char-grid {
    grid-template-columns: repeat(auto-fill, minmax(var(--char-cell-size-mobile), 1fr));
    gap: var(--grid-gap-mobile);
  }

  .char-cell {
    font-size: var(--char-font-size-mobile);
    min-height: 44px;
  }

  /* Section Headers - More compact */
  .section-header {
    margin-bottom: var(--space-sm);
    padding-bottom: var(--space-xs);
  }

  .section-icon {
    font-size: var(--font-size-md);
  }

  .section-title {
    font-size: var(--font-size-md);
  }

  .section-count {
    font-size: var(--font-size-xs);
  }

  /* Mobile Sidebar - Full Screen Modal */
  .details-sidebar {
    width: 100%;
    max-width: none;
    top: var(--header-height);
    height: calc(100vh - var(--header-height));
    border-left: none;
    border-top: 1px solid var(--color-border);
    z-index: calc(var(--z-modal) + 10);
    transform: translateY(100%);
    transition: transform var(--transition-normal) ease-out, background-color var(--transition-normal);
  }

  .details-sidebar.open {
    transform: translateY(0);
  }

  /* Enhanced close button for mobile - larger tap target */
  .details-close {
    padding: var(--space-sm) var(--space-md);
    min-width: 44px;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
  }

  .details-close:hover,
  .details-close:active {
    background-color: var(--color-bg-tertiary);
    color: var(--color-text-primary);
  }

  /* Smaller character preview on mobile */
  .details-preview {
    font-size: 3rem;
    padding: var(--space-lg);
    margin-bottom: var(--space-md);
  }

  /* Mobile overlay - positioned below header */
  .sidebar-overlay {
    top: var(--header-height);
    height: calc(100vh - var(--header-height));
  }

  /* Hide keyboard shortcuts on mobile */
  .keyboard-shortcuts {
    display: none;
  }

  /* Aggressive horizontal scroll prevention */
  html, body, .app-container {
    overflow-x: hidden !important;
    max-width: 100% !important;
    width: 100% !important;
  }

  * {
    max-width: 100vw;
  }

  /* Constrain fixed/absolute elements */
  .toast-container {
    left: var(--space-sm);
    right: var(--space-sm);
    transform: none;
    max-width: 100%;
  }

  .skip-link {
    max-width: 100%;
    overflow: hidden;
  }
}

@media (max-width: 480px) {
  .header {
    padding: var(--space-xs) var(--space-sm);
  }

  .logo span {
    display: none;
  }

  /* Horizontally scrollable categories with touch-friendly scrolling */
  .categories-nav {
    width: 100%;
    max-width: 100%;
    margin-left: 0;
    padding: var(--space-xs) var(--space-sm);
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none; /* IE/Edge */
  }

  .categories-nav::-webkit-scrollbar {
    display: none; /* Chrome/Safari/Opera */
  }

  .categories-list {
    display: flex;
    flex-wrap: nowrap;
    gap: var(--space-xs);
    padding: 0;
    scroll-snap-type: x mandatory;
    scroll-padding: 0 var(--space-sm);
    width: auto;
    min-width: 100%;
  }

  /* Ensure char-grid takes full width */
  .char-grid {
    width: 100%;
  }

  /* Show all categories in scrollable row, hide the "More" dropdown */
  .categories-list > li {
    flex-shrink: 0;
    scroll-snap-align: start;
  }

  .categories-list > li.category-overflow-hidden {
    display: block !important; /* Show all hidden categories */
  }

  .category-more-container {
    display: none !important; /* Hide the "More" dropdown button */
  }

  /* Touch-friendly category buttons with minimum tap target size */
  .category-btn {
    padding: var(--space-sm) var(--space-md);
    font-size: var(--font-size-sm);
    min-height: 44px;
    min-width: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  /* Add padding at end for better scroll experience */
  .categories-list::after {
    content: '';
    flex-shrink: 0;
    width: var(--space-sm);
  }

  /* Main content - tighter padding on small screens */
  .main-content {
    padding: var(--space-sm);
  }

  /* Character Grid - Small mobile screens (6-7 per row) */
  .char-grid {
    grid-template-columns: repeat(auto-fill, minmax(var(--char-cell-size-mobile-sm), 1fr));
    gap: var(--grid-gap-mobile-sm);
    margin-bottom: var(--space-lg);
  }

  /* Character cells - smaller and touch-optimized */
  .char-cell {
    font-size: var(--char-font-size-mobile-sm);
    min-height: 40px;
    border-radius: var(--radius-sm);
  }

  /* Remove hover transform effects on touch devices */
  .char-cell:hover {
    transform: none;
    box-shadow: none;
  }

  /* Add active state for touch feedback */
  .char-cell:active {
    background-color: var(--color-accent-light);
    border-color: var(--color-accent);
    transform: scale(0.95);
  }

  /* Always show favorite button on mobile (no hover) */
  .char-favorite-btn {
    opacity: 0.6;
    top: 1px;
    right: 1px;
    padding: 4px;
    font-size: 0.65rem;
    min-width: 20px;
    min-height: 20px;
  }

  .char-favorite-btn.is-favorite {
    opacity: 1;
  }

  /* Remove hover scale effect on touch */
  .char-favorite-btn:hover {
    transform: none;
  }

  /* Touch feedback for favorite button */
  .char-favorite-btn:active {
    transform: scale(1.1);
    opacity: 1;
  }

  /* Section Headers - Very compact for small screens */
  .section-header {
    margin-bottom: var(--space-xs);
    padding-bottom: var(--space-xs);
    gap: var(--space-xs);
  }

  .section-icon {
    font-size: var(--font-size-sm);
  }

  .section-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
  }

  .section-count {
    font-size: 0.65rem;
  }

  /* Section More button - touch friendly */
  .section-more-btn {
    min-height: 44px;
    padding: var(--space-sm) var(--space-md);
  }

  /* Extra small screen sidebar adjustments */
  .details-sidebar {
    top: var(--header-height);
    height: calc(100vh - var(--header-height));
  }

  .details-header {
    padding: var(--space-sm) var(--space-md);
  }

  .details-title {
    font-size: var(--font-size-sm);
  }

  .details-content {
    padding: var(--space-md);
  }

  /* Even smaller preview on very small screens */
  .details-preview {
    font-size: 2.5rem;
    padding: var(--space-md);
    margin-bottom: var(--space-sm);
  }

  .details-name {
    font-size: var(--font-size-md);
    margin-bottom: var(--space-md);
  }

  .details-info-list {
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
  }

  .details-info-item {
    padding: var(--space-xs) var(--space-sm);
    flex-wrap: wrap;
    gap: var(--space-xs);
  }

  .details-info-label {
    font-size: var(--font-size-xs);
  }

  .details-info-value {
    font-size: var(--font-size-xs);
  }

  /* Full-width buttons for easier tapping */
  .details-actions {
    gap: var(--space-xs);
  }

  .details-action-btn {
    width: 100%;
    padding: var(--space-md);
    min-height: 48px;
    font-size: var(--font-size-sm);
  }

  .details-copy-btn {
    min-width: 44px;
    min-height: 32px;
    padding: var(--space-xs) var(--space-sm);
  }

  /* Toast notifications - properly positioned on mobile */
  .toast-container {
    left: var(--space-sm);
    right: var(--space-sm);
    transform: none;
    width: auto;
    max-width: 100%;
  }

  .toast {
    width: 100%;
    justify-content: center;
    max-width: 100%;
  }

  /* Extra aggressive horizontal scroll prevention for small screens */
  html, body, .app-container {
    overflow-x: hidden !important;
    max-width: 100% !important;
    width: 100% !important;
  }

  *, *::before, *::after {
    max-width: 100vw;
  }

  /* Ensure categories container doesn't overflow */
  .categories-nav {
    overflow-x: auto;
    overflow-y: hidden;
    max-width: 100%;
  }

  .categories-list {
    width: auto;
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus Styles */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

button:focus:not(:focus-visible) {
  outline: none;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  padding: var(--space-sm) var(--space-md);
  background-color: var(--color-accent);
  color: white;
  z-index: 1000;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 0;
}