/**
 * Accessibility and Anti-pattern Fixes
 * Add these styles to your main style.css file
 */

/* ============================================
   SKIP LINK (Accessibility)
   ============================================ */

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  padding: 0.75rem 1.5rem;
  text-decoration: none;
  font-weight: 600;
  z-index: 10000;
  border-radius: 0 0 0.5rem 0;
}

.skip-link:focus {
  top: 0;
  outline: 3px solid var(--color-primary-dark);
  outline-offset: 2px;
}

/* ============================================
   NAVIGATION LIST (Semantic HTML)
   ============================================ */

nav .nav-list {
  list-style: none;
  display: flex;
  gap: 2.5rem; /* Match original var(--space-10) */
  margin: 0;
  padding: 0;
  justify-content: center;
  flex-wrap: wrap;
  width: 100%;
}

nav .nav-list li {
  display: inline-block;
  margin: 0;
  padding: 0;
}

/* Ensure nav links maintain original styling */
nav .nav-list a {
  /* Styles inherited from nav a in main CSS */
}

/* Fix nth-child selectors to work with new li structure */
nav .nav-list li:nth-child(1) a:hover { text-decoration-color: var(--color-mint); }
nav .nav-list li:nth-child(2) a:hover { text-decoration-color: var(--color-lilac); }
nav .nav-list li:nth-child(3) a:hover { text-decoration-color: var(--color-sea); }
nav .nav-list li:nth-child(4) a:hover { text-decoration-color: var(--color-peach); }

/* ============================================
   UTILITY CLASSES (Replace Inline Styles)
   ============================================ */

/* Hidden elements (replaces display: none) */
.hidden {
  display: none !important;
  visibility: hidden;
}

/* Fade-in animation (replaces inline animations) */
.fade-in {
  animation: fadeInSlide 0.4s ease forwards;
}

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

/* Fade-in element for intersection observer */
.fade-in-element {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-element.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Rotated state for tree toggle icons */
.tree-toggle {
  transition: transform 0.2s ease;
  transform: rotate(0deg);
}

.tree-toggle.rotated {
  transform: rotate(90deg);
}

/* ============================================
   FOCUS STYLES (Accessibility)
   ============================================ */

/* Enhanced focus indicators for keyboard navigation */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 2px;
}

/* Remove default focus outline for mouse users */
a:focus:not(:focus-visible),
button:focus:not(:focus-visible) {
  outline: none;
}

/* ============================================
   ARIA ENHANCEMENTS
   ============================================ */

/* Visually hidden but accessible to screen readers */
.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;
}

/* ============================================
   ARTICLE CARD HORIZONTAL LAYOUT FIX
   ============================================ */

/* Make archive items horizontal when they have images */
.archive-item:has(.tutorial-hero-link) {
  display: flex;
  gap: 2.5rem; /* var(--space-10) */
  align-items: flex-start;
}

/* Fallback for browsers that don't support :has() */
.archive-item .tutorial-hero-link ~ .tutorial-content-wrapper {
  display: block;
}

.archive-item {
  display: flex;
  gap: 2.5rem;
  align-items: flex-start;
}

/* ============================================
   IMAGE IMPROVEMENTS
   ============================================ */

/* Prevent layout shift from lazy-loaded images */
img[loading="lazy"] {
  min-height: 200px;
  background: var(--color-bg-tertiary);
}

/* Figure element improvements */
figure {
  margin: 0;
}

/* ============================================
   SUBTLE TAG COLORS (Matches Hero Gradients)
   ============================================ */

/* Soft, subtle tag design matching hero sections */
.tag {
  background: linear-gradient(135deg, rgba(111, 220, 191, 0.15) 0%, rgba(114, 202, 218, 0.15) 100%) !important;
  color: #3d5a5a !important;
  font-weight: 500 !important;
  padding: 0.35rem 0.75rem !important;
  border-radius: 6px !important;
  font-size: 0.8rem !important;
  border: 1px solid rgba(111, 220, 191, 0.25) !important;
  backdrop-filter: blur(8px) !important;
  transition: all 0.3s ease !important;
}

.tag:hover {
  background: linear-gradient(135deg, rgba(111, 220, 191, 0.25) 0%, rgba(114, 202, 218, 0.25) 100%) !important;
  border-color: rgba(111, 220, 191, 0.5) !important;
  transform: translateY(-1px) !important;
  box-shadow: 0 3px 8px rgba(111, 220, 191, 0.2) !important;
}

/* Specific tag color variations - soft and harmonious */
.tag-mint {
  background: linear-gradient(135deg, rgba(111, 220, 191, 0.12) 0%, rgba(111, 220, 191, 0.08) 100%) !important;
  color: #2d7a67 !important;
  border-color: rgba(111, 220, 191, 0.3) !important;
}

.tag-mint:hover {
  background: linear-gradient(135deg, rgba(111, 220, 191, 0.22) 0%, rgba(111, 220, 191, 0.15) 100%) !important;
}

.tag-lilac {
  background: linear-gradient(135deg, rgba(174, 143, 219, 0.12) 0%, rgba(174, 143, 219, 0.08) 100%) !important;
  color: #5e3d8f !important;
  border-color: rgba(174, 143, 219, 0.3) !important;
}

.tag-lilac:hover {
  background: linear-gradient(135deg, rgba(174, 143, 219, 0.22) 0%, rgba(174, 143, 219, 0.15) 100%) !important;
}

.tag-sea {
  background: linear-gradient(135deg, rgba(114, 202, 218, 0.12) 0%, rgba(114, 202, 218, 0.08) 100%) !important;
  color: #2d6c7a !important;
  border-color: rgba(114, 202, 218, 0.3) !important;
}

.tag-sea:hover {
  background: linear-gradient(135deg, rgba(114, 202, 218, 0.22) 0%, rgba(114, 202, 218, 0.15) 100%) !important;
}

.tag-peach {
  background: linear-gradient(135deg, rgba(242, 195, 192, 0.12) 0%, rgba(242, 195, 192, 0.08) 100%) !important;
  color: #a05855 !important;
  border-color: rgba(242, 195, 192, 0.3) !important;
}

.tag-peach:hover {
  background: linear-gradient(135deg, rgba(242, 195, 192, 0.22) 0%, rgba(242, 195, 192, 0.15) 100%) !important;
}

.tag-rose {
  background: linear-gradient(135deg, rgba(220, 132, 155, 0.12) 0%, rgba(220, 132, 155, 0.08) 100%) !important;
  color: #8f3d52 !important;
  border-color: rgba(220, 132, 155, 0.3) !important;
}

.tag-rose:hover {
  background: linear-gradient(135deg, rgba(220, 132, 155, 0.22) 0%, rgba(220, 132, 155, 0.15) 100%) !important;
}

.tag-pink {
  background: linear-gradient(135deg, rgba(235, 72, 136, 0.12) 0%, rgba(235, 72, 136, 0.08) 100%) !important;
  color: #a02d5c !important;
  border-color: rgba(235, 72, 136, 0.3) !important;
}

.tag-pink:hover {
  background: linear-gradient(135deg, rgba(235, 72, 136, 0.22) 0%, rgba(235, 72, 136, 0.15) 100%) !important;
}

.tag-green {
  background: linear-gradient(135deg, rgba(36, 208, 90, 0.12) 0%, rgba(36, 208, 90, 0.08) 100%) !important;
  color: #1a7a3e !important;
  border-color: rgba(36, 208, 90, 0.3) !important;
}

.tag-green:hover {
  background: linear-gradient(135deg, rgba(36, 208, 90, 0.22) 0%, rgba(36, 208, 90, 0.15) 100%) !important;
}

.tag-blue {
  background: linear-gradient(135deg, rgba(16, 162, 245, 0.12) 0%, rgba(16, 162, 245, 0.08) 100%) !important;
  color: #0d5e9e !important;
  border-color: rgba(16, 162, 245, 0.3) !important;
}

.tag-blue:hover {
  background: linear-gradient(135deg, rgba(16, 162, 245, 0.22) 0%, rgba(16, 162, 245, 0.15) 100%) !important;
}

.tag-yellow {
  background: linear-gradient(135deg, rgba(233, 188, 63, 0.12) 0%, rgba(233, 188, 63, 0.08) 100%) !important;
  color: #8f6d1f !important;
  border-color: rgba(233, 188, 63, 0.3) !important;
}

.tag-yellow:hover {
  background: linear-gradient(135deg, rgba(233, 188, 63, 0.22) 0%, rgba(233, 188, 63, 0.15) 100%) !important;
}

/* Small tags in tutorials */
.tag--small, .tag.tag--small {
  font-size: 0.7rem !important;
  padding: 0.25rem 0.6rem !important;
  font-weight: 400 !important;
}

/* ============================================
   SUBTLE SIDEBAR COLORS (Matches Hero)
   ============================================ */

/* Sidebar header - soft gradient like hero */
.sidebar-header {
  background: linear-gradient(135deg, rgba(111, 220, 191, 0.08) 0%, rgba(114, 202, 218, 0.08) 100%) !important;
  border-bottom: 1px solid rgba(111, 220, 191, 0.2) !important;
  padding: 1.5rem 2rem !important;
}

.sidebar-header h2, .sidebar-header h3 {
  color: #3d5a5a !important;
  font-weight: 600 !important;
  margin: 0 !important;
  font-size: 1.1rem !important;
}

/* Tree items - default state (subtle) */
.tree-item {
  background: transparent !important;
  color: #555 !important;
  font-weight: 400 !important;
  border-left: 2px solid transparent !important;
  transition: all 0.3s ease !important;
}

.tree-item:hover {
  background: linear-gradient(90deg, rgba(111, 220, 191, 0.08) 0%, transparent 100%) !important;
  color: #2d7a67 !important;
  border-left-color: rgba(111, 220, 191, 0.4) !important;
}

/* Tree items - active state (subtle gradient) */
.tree-item.active,
.tree-item[aria-pressed="true"] {
  background: linear-gradient(90deg, rgba(111, 220, 191, 0.15) 0%, rgba(114, 202, 218, 0.05) 100%) !important;
  color: #2d7a67 !important;
  font-weight: 500 !important;
  border-left-color: rgba(111, 220, 191, 0.6) !important;
  border-left-width: 3px !important;
}

/* Tree item count badges - soft and minimal */
.tree-item-count {
  background: rgba(111, 220, 191, 0.15) !important;
  color: #2d7a67 !important;
  font-weight: 500 !important;
  padding: 0.15rem 0.5rem !important;
  border-radius: 12px !important;
  font-size: 0.7rem !important;
  min-width: 22px !important;
  text-align: center !important;
  border: 1px solid rgba(111, 220, 191, 0.25) !important;
}

.tree-item.active .tree-item-count,
.tree-item[aria-pressed="true"] .tree-item-count {
  background: rgba(111, 220, 191, 0.25) !important;
  color: #1a5a4a !important;
  font-weight: 600 !important;
  border-color: rgba(111, 220, 191, 0.4) !important;
}

/* Tree toggle icon - subtle color */
.tree-toggle {
  color: rgba(111, 220, 191, 0.6) !important;
  transition: all 0.3s ease !important;
}

.tree-item:hover .tree-toggle {
  color: rgba(111, 220, 191, 0.8) !important;
}

.tree-item.active .tree-toggle,
.tree-item[aria-pressed="true"] .tree-toggle {
  color: #2d7a67 !important;
}

/* "All Tutorials" button - hero-inspired gradient */
.tree-item-all {
  background: linear-gradient(135deg, rgba(111, 220, 191, 0.15) 0%, rgba(114, 202, 218, 0.15) 100%) !important;
  color: #2d7a67 !important;
  font-weight: 500 !important;
  border: 1px solid rgba(111, 220, 191, 0.25) !important;
  box-shadow: none !important;
  margin-bottom: 0.5rem !important;
}

.tree-item-all:hover {
  background: linear-gradient(135deg, rgba(111, 220, 191, 0.25) 0%, rgba(114, 202, 218, 0.25) 100%) !important;
  border-color: rgba(111, 220, 191, 0.4) !important;
  transform: translateY(-1px) !important;
  box-shadow: 0 2px 6px rgba(111, 220, 191, 0.15) !important;
}

.tree-item-all.active,
.tree-item-all[aria-pressed="true"] {
  background: linear-gradient(135deg, rgba(111, 220, 191, 0.3) 0%, rgba(114, 202, 218, 0.3) 100%) !important;
  color: #1a5a4a !important;
  font-weight: 600 !important;
  border-color: rgba(111, 220, 191, 0.5) !important;
}

/* Blog filter tags - subtle like hero */
.filter-tag {
  background: rgba(245, 245, 245, 0.6) !important;
  color: #555 !important;
  border: 1px solid rgba(0, 0, 0, 0.08) !important;
  font-weight: 400 !important;
  padding: 0.5rem 1rem !important;
  border-radius: 8px !important;
  transition: all 0.3s ease !important;
  backdrop-filter: blur(4px) !important;
}

.filter-tag:hover {
  background: linear-gradient(135deg, rgba(111, 220, 191, 0.12) 0%, rgba(114, 202, 218, 0.12) 100%) !important;
  color: #2d7a67 !important;
  border-color: rgba(111, 220, 191, 0.3) !important;
  transform: translateY(-1px) !important;
  box-shadow: 0 2px 6px rgba(111, 220, 191, 0.15) !important;
}

.filter-tag.active,
.filter-tag[aria-selected="true"] {
  background: linear-gradient(135deg, rgba(111, 220, 191, 0.2) 0%, rgba(114, 202, 218, 0.2) 100%) !important;
  color: #1a5a4a !important;
  border-color: rgba(111, 220, 191, 0.4) !important;
  font-weight: 500 !important;
  box-shadow: 0 2px 8px rgba(111, 220, 191, 0.2) !important;
}

/* ============================================
   RESPONSIVE IMPROVEMENTS
   ============================================ */

@media (prefers-reduced-motion: reduce) {
  .fade-in,
  .fade-in-element,
  .tree-toggle,
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
  .skip-link,
  nav,
  .blog-filter,
  .tutorial-sidebar,
  .sidebar-toggle,
  .social-links {
    display: none;
  }

  .article-content {
    max-width: 100%;
  }
}