/* Enhanced Responsive and Accessibility Improvements */

/* Screen Reader Only Content */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Focus Visible for Better Keyboard Navigation */
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

button:focus-visible,
a:focus-visible,
input:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* Mobile Responsiveness Improvements */
@media (max-width: 768px) {
  :root {
    --spacing-sm: 6px;
    --spacing-md: 12px;
    --spacing-lg: 18px;
    --lyrics-font-size: 1rem;
  }

  .header {
    padding: 12px var(--spacing-md);
    font-size: 1.1rem;
  }

  body {
    font-size: 14px;
  }

  /* Touch-friendly button sizes */
  button {
    min-height: 44px;
    min-width: 44px;
    padding: 10px 16px !important;
  }

  /* Ensure management tables are scrollable on mobile and don't collapse */
  .song-table, 
  table {
    display: block;
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border-collapse: separate; /* Changed to separate to allow better clipping control */
    white-space: nowrap;
    min-width: 300px;
  }

  /* Ensure action columns are always touch-friendly and visible */
  .song-table td:last-child, 
  table td:last-child {
    padding-right: 24px !important;
    min-width: 100px;
  }

  input,
  select,
  textarea {
    min-height: 44px;
    font-size: 16px; /* Prevents zoom on iOS */
  }

  /* Improve spacing for touch targets */
  .song,
  .category-card,
  .composer-chip {
    padding: 12px !important;
    margin-bottom: 8px !important;
  }

  /* Stack navigation on small screens */
  .main-nav {
    flex-wrap: wrap;
    gap: 8px;
  }

  /* Better form layout on mobile */
  .admin-form input,
  .admin-form textarea,
  .admin-form select {
    width: 100%;
    margin-bottom: 12px;
  }

  /* Reduce padding in modals/cards on mobile */
  .admin-form {
    padding: 16px;
  }

  /* Better spacing for song list on mobile */
  #list {
    margin: 0 -8px;
  }

  /* Ensure action columns in tables are visible and padded */
  th:last-child, 
  td:last-child {
    padding-right: 20px !important;
  }

  .category-grid {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)) !important;
    gap: 8px !important;
  }

  /* Mobile menu groups */
  .menu-group-label {
    cursor: pointer;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    margin-bottom: 8px;
  }

  .menu-group-content {
    display: none;
    padding-left: 1rem;
  }

  .menu-group.expanded .menu-group-content {
    display: block;
  }

  /* Mobile form improvements */
  input[type="text"],
  input[type="email"],
  input[type="password"],
  textarea,
  select {
    font-size: 16px !important; /* Prevents zoom on iOS */
    min-height: 44px !important; /* Touch-friendly */
  }

  button,
  .btn-primary,
  .btn-secondary {
    min-height: 44px !important;
    min-width: 44px !important;
    padding: 12px 16px !important;
  }

  .browse-filter-clear {
    min-height: 34px !important;
    min-width: 34px !important;
    padding: 0 !important;
  }

  .playlist-detail-shell + #list .song-position-btn {
    min-height: 32px !important;
    min-width: 32px !important;
    padding: 4px 8px !important;
  }

  .playlist-detail-shell + #list .song-manage-btn {
    min-height: 38px !important;
    padding: 8px 10px !important;
  }

  .playlist-detail-shell .feature-inline-btn,
  .playlist-detail-shell .btn-download-playlist {
    white-space: normal !important;
  }
}

@media (max-width: 480px) {
  :root {
    --radius: 12px;
  }

  .header {
    padding: 10px 8px;
  }

  #header-title {
    font-size: 1rem;
  }

  .search-input-container {
    min-height: 40px;
  }

  .search {
    font-size: 16px; /* Prevent iOS zoom */
    padding: 10px 12px;
  }

  /* Stack buttons vertically on very small screens */
  .action-bar {
    flex-direction: column;
    gap: 8px;
  }

  .btn-action {
    width: 100%;
  }

  /* Better table layout on mobile */
  table {
    font-size: 12px;
  }

  th, td {
    padding: 8px 4px !important;
  }

  /* Hidden columns on very small screens */
  @media (max-width: 380px) {
    .date-column,
    .views-column {
      display: none;
    }
  }
}

/* Improved button states for accessibility */
button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

button:disabled:hover {
  background-color: inherit;
  transform: none;
}

/* Better form input focus states */
input:focus,
textarea:focus,
select:focus {
  background-color: var(--card-hover);
  border-color: var(--primary);
}

/* Loading states */
.loading {
  opacity: 0.6;
  pointer-events: none;
}

.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Improved contrast for better readability */
.alert {
  border-left: 4px solid;
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 16px;
}

/* Default / Dark Mode Alerts */
.alert.error {
  border-color: #ef4444;
  background: rgba(239, 68, 68, 0.1);
  color: #fca5a5;
}

.alert.success {
  border-color: #10b981;
  background: rgba(16, 185, 129, 0.1);
  color: #86efac;
}

.alert.warning {
  border-color: #f59e0b;
  background: rgba(245, 158, 11, 0.1);
  color: #fcd34d;
}

.alert.info {
  border-color: var(--primary);
  background: rgba(251, 140, 0, 0.1);
  color: #fed7aa;
}

/* Light Mode Overrides for Alerts */
body.light-mode .alert.error { color: #721c24; background: #f8d7da; border-color: #f5c6cb; }
body.light-mode .alert.success { color: #155724; background: #d4edda; border-color: #c3e6cb; }
body.light-mode .alert.warning { color: #856404; background: #fff3cd; border-color: #ffeeba; }
body.light-mode .alert.info { color: #0c5460; background: #d1ecf1; border-color: #bee5eb; }

/* Modal and Popup Visibility */
body:not(.light-mode) .modal-content, 
body:not(.light-mode) .modal,
body:not(.light-mode) dialog {
  background-color: #1a202c !important;
  color: #e2e8f0 !important;
  border-color: #4a5568;
}

body:not(.light-mode) .modal-content p,
body:not(.light-mode) .modal-content span,
body:not(.light-mode) .modal-content h1,
body:not(.light-mode) .modal-content h2,
body:not(.light-mode) .modal-content h3,
body:not(.light-mode) .modal-content h4 {
  color: #e2e8f0 !important;
}

/* Toast Notification Styling */
.toast-notification {
  background: #334155;
  color: #f8fafc;
  padding: 12px 20px;
  border-radius: 8px;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255,255,255,0.1);
  z-index: 9999;
  display: flex;
  align-items: center;
  gap: 12px;
}

body.light-mode .toast-notification {
  background: #ffffff;
  color: #1e293b;
  border-color: #e2e8f0;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

/* Dark mode improvements for eye comfort */
@media (prefers-color-scheme: dark) {
  body {
    background-color: #0a0e1a;
  }
}

/* Reduce motion for users with vestibular disorders */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* High contrast mode support */
@media (prefers-contrast: more) {
  button {
    border: 2px solid currentColor;
  }

  .alert {
    border-width: 2px;
  }

  input,
  textarea,
  select {
    border-width: 2px;
  }
}

/* Print styles */
@media print {
  .header,
  .main-nav,
  .search-wrapper,
  .action-bar,
  .theme-btn,
  .lang-btn,
  .login-btn,
  .user-menu,
  .font-slider-container,
  .btn-back-full,
  .pagination-nav,
  .reading-exit,
  .detail-lang-switch,
  button,
  .footer,
  .cookie-banner,
  .exit-reading-btn,
  .player {
    display: none !important;
  }

  body {
    background: white !important;
    color: black !important;
  }

  .detail-title {
    page-break-after: avoid;
    color: #ff9800 !important;
    font-size: 24px !important;
    text-align: center !important;
    margin: 20px 0 !important;
  }

  .song-info {
    display: flex !important;
    justify-content: space-around !important;
    flex-wrap: wrap !important;
    margin: 20px 0 !important;
    font-size: 14px !important;
  }

  .lyrics-content {
    page-break-inside: avoid;
    orphans: 3;
    widows: 3;
    font-size: 16px !important;
    line-height: 1.9 !important;
    width: 100% !important;
    max-width: 100% !important;
    padding: 0 !important;
    margin: 0 !important;
  }

  .lyrics-section .section-content {
    line-height: 1.9 !important;
    margin-bottom: 0.75em !important;
  }

  .lyrics-section .section-content p {
    margin: 0 0 0.75em 0 !important;
  }

  .lyrics-container {
    margin: 30px 0 !important;
  }

  .category-header {
    background: #f5f5f5 !important;
    padding: 10px !important;
    margin: 20px 0 !important;
    border-radius: 8px !important;
  }
}

/* Smooth scrolling when not reduced-motion */
@supports (scroll-behavior: smooth) {
  @media (prefers-reduced-motion: no-preference) {
    html {
      scroll-behavior: smooth;
    }
  }
}

/* Better support for orientation changes */
@media (orientation: landscape) and (max-height: 600px) {
  .header {
    padding: 8px 12px;
  }

  .main-nav button {
    padding: 6px 12px;
    font-size: 0.9rem;
  }
}

/* Improved input placeholder visibility */
::placeholder {
  color: var(--text-dim);
  opacity: 0.7;
}

input::placeholder,
textarea::placeholder {
  color: var(--text-dim);
}

/* Better link visibility */
a {
  color: var(--primary);
  text-decoration: underline;
  text-decoration-skip-ink: auto;
}

a:visited {
  color: #d97706;
}

a:hover {
  opacity: 0.8;
}

/* Improved table accessibility */
table {
  border-collapse: collapse;
  width: 100%;
}

th {
  background-color: var(--card-bg);
  text-align: left;
  padding: 12px;
  border: 1px solid var(--border);
  font-weight: 600;
}

td {
  padding: 12px;
  border: 1px solid var(--border);
}

tbody tr:hover {
  background-color: var(--card-hover);
}

/* Better form group styling */
.form-group {
  display: flex;
  flex-direction: column;
  margin-bottom: 16px;
}

.form-group label {
  margin-bottom: 6px;
  font-weight: 500;
  color: var(--text-main);
}

.form-group input,
.form-group textarea,
.form-group select {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background-color: var(--card-bg);
  color: var(--text-main);
  font-size: 1rem;
}

/* Badge styling */
.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
  white-space: nowrap;
}

.badge.primary {
  background-color: var(--primary);
  color: white;
}

.badge.secondary {
  background-color: var(--card-bg);
  color: var(--text-main);
  border: 1px solid var(--border);
}

/* Improved modal/dialog styling */
dialog {
  background-color: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  box-shadow: var(--shadow);
}

dialog::backdrop {
  background-color: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
}

/* Status message animations */
.message-enter {
  animation: messageSlideIn 0.3s ease-out forwards;
}

.message-exit {
  animation: messageSlideOut 0.3s ease-out forwards;
}

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

@keyframes messageSlideOut {
  to {
    opacity: 0;
    transform: translateY(-20px);
  }
}

/* Better link underline style */
a:not(.button):not(.btn-action) {
  border-bottom: 1px solid currentColor;
  text-decoration: none;
}

a:not(.button):not(.btn-action):hover {
  background-color: rgba(251, 140, 0, 0.1);
}