@tailwind base;
@tailwind components;
@tailwind utilities;

/* Accessibility utilities */
@layer utilities {
  .visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }

  .skip-link {
    @apply absolute -top-full left-0 z-50 bg-primary-600 text-white px-4 py-2;
  }

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

/* Reduce motion for accessibility */
@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;
  }
}

/* Dark mode body background */
@layer base {
  body {
    @apply bg-white dark:bg-surface-950 text-surface-900 dark:text-surface-100;
  }
}

/* Layout styles */
@layer components {
  /* Site header */
  .site-header {
    @apply bg-white dark:bg-surface-900 border-b border-surface-200 dark:border-surface-700 py-4 sticky top-0 z-50;
  }

  .header-container {
    @apply flex items-center justify-between;
  }

  .site-title {
    @apply text-xl font-bold text-surface-900 dark:text-white no-underline hover:text-primary-600 dark:hover:text-primary-400 transition-colors;
  }

  /* Header actions (nav + theme toggle) */
  .header-actions {
    @apply hidden md:flex items-center gap-4;
  }

  .site-nav {
    @apply flex items-center gap-4;
  }

  .site-nav > a,
  .site-nav .nav-dropdown-trigger {
    @apply text-surface-600 dark:text-surface-400 hover:text-primary-600 dark:hover:text-primary-400 no-underline transition-colors py-2;
  }

  /* Navigation dropdown */
  .nav-dropdown {
    @apply relative;
  }

  .nav-dropdown-trigger {
    @apply flex items-center gap-1 cursor-pointer bg-transparent border-none text-base;
  }

  .nav-dropdown-menu {
    @apply absolute top-full left-0 mt-1 py-2 bg-white dark:bg-surface-800 border border-surface-200 dark:border-surface-700 rounded-lg shadow-lg min-w-[160px] z-50 overflow-y-auto;
    max-height: calc(100vh - 5rem);
    max-height: calc(100dvh - 5rem);
  }

  .nav-dropdown-menu a {
    @apply block px-4 py-2 text-sm text-surface-600 dark:text-surface-400 hover:bg-surface-100 dark:hover:bg-surface-700 hover:text-primary-600 dark:hover:text-primary-400 no-underline;
  }

  .nav-dropdown-divider {
    @apply my-2 border-t border-surface-200 dark:border-surface-700;
  }

  /* Mobile menu toggle button */
  .menu-toggle {
    @apply md:hidden p-2 rounded-lg text-surface-600 dark:text-surface-400 hover:bg-surface-100 dark:hover:bg-surface-800 transition-colors;
  }

  /* Mobile navigation dropdown */
  .mobile-nav {
    @apply md:hidden border-t border-surface-200 dark:border-surface-700 bg-white dark:bg-surface-900 overflow-y-auto;
    max-height: calc(100vh - 4rem);
    max-height: calc(100dvh - 4rem);
  }

  .mobile-nav a {
    @apply block px-4 py-3 text-surface-600 dark:text-surface-400 hover:bg-surface-100 dark:hover:bg-surface-800 hover:text-primary-600 dark:hover:text-primary-400 no-underline transition-colors border-b border-surface-100 dark:border-surface-800 last:border-b-0;
  }

  /* Mobile nav collapsible sections */
  .mobile-nav-section {
    @apply border-b border-surface-100 dark:border-surface-800;
  }

  .mobile-nav-toggle {
    @apply flex items-center justify-between w-full px-4 py-3 text-surface-600 dark:text-surface-400 hover:bg-surface-100 dark:hover:bg-surface-800 hover:text-primary-600 dark:hover:text-primary-400 transition-colors bg-transparent border-none text-base text-left cursor-pointer;
  }

  .mobile-nav-submenu {
    @apply bg-surface-50 dark:bg-surface-800;
  }

  .mobile-nav-submenu a {
    @apply pl-8 py-2 text-sm border-b-0;
  }

  .mobile-nav-divider {
    @apply my-2 mx-4 border-t border-surface-200 dark:border-surface-700;
  }

  /* Theme toggle button */
  .theme-toggle {
    @apply p-2 rounded-lg text-surface-600 dark:text-surface-400 hover:bg-surface-100 dark:hover:bg-surface-800 transition-colors;
  }

  .theme-toggle .sun-icon {
    @apply hidden;
  }

  .theme-toggle .moon-icon {
    @apply block;
  }

  .dark .theme-toggle .sun-icon {
    @apply block;
  }

  .dark .theme-toggle .moon-icon {
    @apply hidden;
  }

  /* Mobile theme toggle */
  .mobile-theme-toggle {
    @apply flex items-center justify-between w-full px-4 py-3 text-surface-600 dark:text-surface-400 hover:bg-surface-100 dark:hover:bg-surface-800 hover:text-primary-600 dark:hover:text-primary-400 transition-colors bg-transparent border-none text-base text-left cursor-pointer border-t border-surface-200 dark:border-surface-700;
  }

  .mobile-theme-toggle .theme-label {
    @apply font-normal;
  }

  .mobile-theme-toggle .theme-icons {
    @apply flex items-center;
  }

  .mobile-theme-toggle .sun-icon {
    @apply hidden;
  }

  .mobile-theme-toggle .moon-icon {
    @apply block;
  }

  .dark .mobile-theme-toggle .sun-icon {
    @apply block;
  }

  .dark .mobile-theme-toggle .moon-icon {
    @apply hidden;
  }

  /* Container */
  .container {
    @apply max-w-5xl mx-auto px-4;
  }

  /* Site footer */
  .site-footer {
    @apply mt-12 py-8 border-t border-surface-200 dark:border-surface-700 text-center text-sm text-surface-500;
  }

  .site-footer a {
    @apply text-primary-600 dark:text-primary-400 hover:underline;
  }

  /* Layout with sidebar - mobile-first with responsive grid */
  .layout-with-sidebar {
    @apply grid grid-cols-1 gap-6 md:gap-8 lg:grid-cols-3;
  }

  .main-content {
    @apply lg:col-span-2 min-w-0 overflow-x-hidden; /* min-w-0 + overflow-x-hidden prevents layout breaking */
  }

  .sidebar {
    @apply space-y-6 lg:sticky lg:top-24 lg:self-start overflow-hidden;
  }

  /* Main content area - adjust padding for mobile */
  main.container {
    @apply py-6 md:py-8;
  }
}

/* Custom component styles */
@layer components {
  /* Post list */
  .post-list {
    @apply list-none p-0 m-0 space-y-6;
  }

  .post-list li {
    @apply pb-6 border-b border-b-surface-200 dark:border-b-surface-700 last:border-0;
  }

  /* Post meta */
  .post-meta {
    @apply text-sm text-surface-600 dark:text-surface-400 flex flex-wrap gap-2 items-center;
  }

  /* Category tags */
  .p-category {
    @apply inline-block px-2 py-0.5 text-xs bg-primary-100 dark:bg-primary-900 text-primary-800 dark:text-primary-200 rounded;
  }

  /* Webmention facepile - overlapping avatar display */
  .facepile {
    @apply flex flex-wrap items-center;
  }

  .facepile-avatar {
    @apply inline-block -ml-2 first:ml-0 transition-transform hover:z-10 hover:scale-110;
  }

  .facepile-avatar img {
    @apply w-8 h-8 rounded-full;
  }

  /* GitHub components */
  .repo-card {
    @apply p-4 border border-surface-200 dark:border-surface-700 rounded-lg;
  }

  .repo-meta {
    @apply flex gap-4 text-sm text-surface-600 dark:text-surface-400 mt-2;
  }

  /* Timeline for CV */
  .timeline {
    @apply relative pl-6 border-l-2 border-primary-500;
  }

  .timeline-item {
    @apply relative pb-6 last:pb-0;
  }

  .timeline-item::before {
    content: '';
    @apply absolute -left-[calc(1.5rem+5px)] top-1.5 w-3 h-3 bg-primary-500 rounded-full;
  }

  /* Skills badges */
  .skill-badge {
    @apply inline-block px-3 py-1 text-sm bg-surface-100 dark:bg-surface-800 rounded-full;
  }

  /* Ensure is-land custom elements don't break block layout flow */
  is-land {
    @apply block;
  }

  /* Widget cards */
  .widget {
    @apply p-4 mb-4 bg-white dark:bg-surface-800 rounded-lg border border-surface-200 dark:border-surface-700 shadow-sm overflow-hidden;
  }

  .widget-title {
    @apply font-bold text-lg mb-4;
  }

  /* Collapsible widget wrapper */
  .widget-header {
    @apply flex items-center justify-between cursor-pointer;
  }

  .widget-header .widget-title {
    @apply mb-0;
  }

  .widget-chevron {
    @apply w-4 h-4 text-surface-400 transition-transform duration-200 shrink-0;
  }

  /* Hide inner widget titles when the collapsible wrapper provides one */
  .widget-collapsible .widget .widget-title {
    @apply hidden;
  }

  /* Hide FeedLand's custom title in collapsible wrapper */
  .widget-collapsible .widget .fl-title {
    @apply hidden;
  }

  /* Neutralize inner widget card styling when inside collapsible wrapper */
  .widget-collapsible .widget {
    @apply border-0 shadow-none rounded-none mb-0 bg-transparent;
  }

  /* Post cards */
  .post-card {
    @apply p-5 bg-white dark:bg-surface-800 rounded-lg border border-surface-200 dark:border-surface-700 shadow-sm overflow-hidden;
  }

  .post-header {
    @apply flex flex-wrap items-center gap-2;
  }

  .post-footer {
    @apply pt-3 border-t border-surface-100 dark:border-surface-700;
  }

  /* Photo gallery on listing pages */
  .photo-list li {
    @apply pb-8;
  }

  .photo-gallery {
    @apply my-4 grid gap-2;
  }

  .photo-gallery img {
    @apply w-full max-h-[500px] object-cover rounded-lg;
  }

  .photo-link {
    @apply block;
  }

  .photo-caption {
    @apply mt-3 text-surface-600 dark:text-surface-400;
  }

  /* Multi-photo grid */
  .photo-gallery:has(img:nth-child(2)) {
    @apply grid-cols-2;
  }

  .photo-gallery:has(img:nth-child(3)) {
    @apply grid-cols-2;
  }

  .photo-gallery:has(img:nth-child(4)) {
    @apply grid-cols-2;
  }

  /* Pagination */
  .pagination {
    @apply mt-12 pt-8 border-t border-surface-200 dark:border-surface-700 flex flex-col sm:flex-row items-center justify-between gap-4;
  }

  .pagination-info {
    @apply text-sm text-surface-600 dark:text-surface-400;
  }

  .pagination-links {
    @apply flex items-center gap-2;
  }

  .pagination-link {
    @apply inline-flex items-center gap-1 px-4 py-2 text-sm font-medium bg-surface-100 dark:bg-surface-800 rounded-lg hover:bg-surface-200 dark:hover:bg-surface-700 transition-colors;
  }

  .pagination-link.disabled {
    @apply opacity-50 cursor-not-allowed hover:bg-surface-100 dark:hover:bg-surface-800;
  }
}

/* Focus states */
@layer base {
  a:focus-visible,
  button:focus-visible,
  input:focus-visible,
  textarea:focus-visible,
  select:focus-visible {
    @apply outline-2 outline-offset-2 outline-primary-500;
  }
}

/* Video embeds */
@layer components {
  .video-embed {
    @apply relative w-full aspect-video my-4;
  }

  .video-embed iframe {
    @apply absolute inset-0 w-full h-full rounded-lg;
  }
}

/* Admin UI - FAB and dashboard link */
@layer components {
  .fab-container {
    @apply fixed bottom-6 right-6 z-50 flex flex-col items-end;
  }

  .fab-backdrop {
    @apply fixed inset-0 bg-black/20 dark:bg-black/40 z-40;
  }

  .fab-button {
    @apply relative z-50 w-14 h-14 rounded-full bg-primary-600 hover:bg-primary-700 dark:bg-primary-500 dark:hover:bg-primary-600 text-white shadow-lg hover:shadow-xl transition-all duration-200 flex items-center justify-center;
  }

  .fab-button:focus-visible {
    @apply outline-2 outline-offset-2 outline-primary-500;
  }

  .fab-menu {
    @apply relative z-50 mb-3 flex flex-col gap-2 items-end;
  }

  .fab-menu-item {
    @apply flex items-center gap-3 px-4 py-3 rounded-xl bg-white dark:bg-surface-800 shadow-md hover:shadow-lg border border-surface-200 dark:border-surface-700 text-surface-700 dark:text-surface-200 hover:text-primary-600 dark:hover:text-primary-400 no-underline transition-all duration-150 text-sm font-medium;
  }

  .fab-menu-divider {
    @apply border-t border-surface-200 dark:border-surface-700 my-1 w-full;
  }

  .admin-nav-link {
    @apply text-primary-600 dark:text-primary-400 hover:text-primary-700 dark:hover:text-primary-300 no-underline transition-colors py-2 inline-flex items-center gap-1;
  }
}

/* Performance: content-visibility for off-screen rendering optimization */
@layer utilities {
  .content-auto {
    content-visibility: auto;
    contain-intrinsic-size: auto 500px;
  }
}

/* Apply content-visibility to images and post items for performance */
@layer base {
  /* Responsive typography */
  html {
    @apply text-base md:text-lg;
  }

  /* Prevent horizontal overflow */
  body {
    @apply overflow-x-hidden;
  }

  /* Images - prevent overflow and add content-visibility */
  img {
    @apply max-w-full h-auto;
    content-visibility: auto;
  }

  /* Pre/code blocks - prevent overflow on mobile */
  pre {
    @apply overflow-x-auto max-w-full;
    -webkit-overflow-scrolling: touch;
  }

  code {
    @apply break-words;
  }

  pre code {
    word-break: normal;
    overflow-wrap: normal;
  }

  /* Links in content - break long URLs */
  .e-content a,
  .prose a {
    @apply break-words;
    word-break: break-word;
  }

  /* Content containers - clip horizontal overflow but allow pre blocks to scroll */
  .e-content,
  .prose {
    overflow-x: clip;
    max-width: 100%;
  }

  article {
    scroll-margin-top: 80px; /* Prevent header overlap when scrolling to anchors */
  }

  /* Heading anchors — generated by markdown-it-anchor */
  .prose h2[id],
  .prose h3[id],
  .prose h4[id] {
    scroll-margin-top: 80px;
  }
  .prose :is(h2, h3, h4) > a.header-anchor {
    color: inherit;
    text-decoration: none;
  }
  .prose :is(h2, h3, h4) > a.header-anchor:hover {
    text-decoration: underline;
    text-decoration-color: var(--tw-prose-links, currentColor);
    text-underline-offset: 4px;
  }
  .prose :is(h2, h3, h4) > a.header-anchor::after {
    content: " #";
    opacity: 0;
    font-weight: normal;
    transition: opacity 0.15s;
  }
  .prose :is(h2, h3, h4):hover > a.header-anchor::after {
    opacity: 0.4;
  }

  .post-list li {
    content-visibility: auto;
    contain-intrinsic-size: auto 200px;
  }

  /* Tables - responsive handling */
  table {
    @apply w-full;
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  /* Ensure truncate works properly in flex containers */
  .truncate {
    @apply overflow-hidden text-ellipsis whitespace-nowrap;
  }

  /* Video embeds - maintain aspect ratio */
  lite-youtube,
  iframe[src*="youtube"],
  iframe[src*="vimeo"] {
    @apply max-w-full;
  }
}

/* Pagefind UI theme overrides — outside @layer for higher specificity over Pagefind's :root defaults */
#search .pagefind-ui {
  --pagefind-ui-scale: 1;
  --pagefind-ui-primary: #2563eb;
  --pagefind-ui-text: #18181b;
  --pagefind-ui-background: #ffffff;
  --pagefind-ui-border: #e4e4e7;
  --pagefind-ui-tag: #f4f4f5;
  --pagefind-ui-border-width: 1px;
  --pagefind-ui-border-radius: 8px;
  --pagefind-ui-image-border-radius: 8px;
  --pagefind-ui-font: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.dark #search .pagefind-ui {
  --pagefind-ui-primary: #60a5fa;
  --pagefind-ui-text: #f4f4f5;
  --pagefind-ui-background: #09090b;
  --pagefind-ui-border: #3f3f46;
  --pagefind-ui-tag: #27272a;
}

/* Search input */
#search .pagefind-ui__search-input {
  background-color: #ffffff;
  color: #18181b;
  border-color: #e4e4e7;
  font-weight: 400;
}

.dark #search .pagefind-ui__search-input {
  background-color: #18181b;
  color: #f4f4f5;
  border-color: #3f3f46;
}

#search .pagefind-ui__search-input:focus {
  outline: 2px solid #3b82f6;
  outline-offset: 2px;
  border-color: #3b82f6;
}

.dark #search .pagefind-ui__search-input:focus {
  outline-color: #60a5fa;
  border-color: #60a5fa;
}

/* Search clear button */
#search .pagefind-ui__search-clear {
  color: #52525b;
  background-color: #ffffff;
}

.dark #search .pagefind-ui__search-clear {
  color: #a1a1aa;
  background-color: #18181b;
}

#search .pagefind-ui__search-clear:hover {
  color: #18181b;
}

.dark #search .pagefind-ui__search-clear:hover {
  color: #f4f4f5;
}

/* Result links */
#search .pagefind-ui__result-link {
  color: #2563eb;
}

#search .pagefind-ui__result-link:hover {
  text-decoration: underline;
}

.dark #search .pagefind-ui__result-link {
  color: #60a5fa;
}

/* Result excerpts */
#search .pagefind-ui__result-excerpt {
  color: #52525b;
}

.dark #search .pagefind-ui__result-excerpt {
  color: #a1a1aa;
}

/* Highlighted search terms in results */
#search .pagefind-ui__result-excerpt mark,
#search mark {
  background-color: #dbeafe;
  color: #1e40af;
  padding: 0.1em 0.2em;
  border-radius: 2px;
}

.dark #search .pagefind-ui__result-excerpt mark,
.dark #search mark {
  background-color: #1e3a8a;
  color: #bfdbfe;
}

/* Message (result count) */
#search .pagefind-ui__message {
  color: #52525b;
}

.dark #search .pagefind-ui__message {
  color: #a1a1aa;
}

/* "Load more" button */
#search .pagefind-ui__button {
  color: #2563eb;
  background-color: #ffffff;
  border-color: #e4e4e7;
  cursor: pointer;
}

#search .pagefind-ui__button:hover {
  background-color: #eff6ff;
  border-color: #2563eb;
}

.dark #search .pagefind-ui__button {
  color: #60a5fa;
  background-color: #09090b;
  border-color: #3f3f46;
}

.dark #search .pagefind-ui__button:hover {
  background-color: #18181b;
  border-color: #60a5fa;
}

/* Filter panel labels */
#search .pagefind-ui__filter-name,
#search .pagefind-ui__filter-label {
  color: #18181b;
}

.dark #search .pagefind-ui__filter-name,
.dark #search .pagefind-ui__filter-label {
  color: #f4f4f5;
}

/* Result tags */
#search .pagefind-ui__result-tag {
  background-color: #f4f4f5;
  color: #52525b;
}

.dark #search .pagefind-ui__result-tag {
  background-color: #27272a;
  color: #a1a1aa;
}

/* Sub-result nested links */
#search .pagefind-ui__result-nested .pagefind-ui__result-link {
  color: #2563eb;
  font-weight: 400;
}

.dark #search .pagefind-ui__result-nested .pagefind-ui__result-link {
  color: #60a5fa;
}

/* Mobile-specific improvements */
@layer utilities {
  /* Ensure proper touch scrolling on overflow containers */
  .overflow-x-auto {
    -webkit-overflow-scrolling: touch;
  }

  /* Hide scrollbar but allow scrolling */
  .scrollbar-hide {
    -ms-overflow-style: none;
    scrollbar-width: none;
  }

  .scrollbar-hide::-webkit-scrollbar {
    display: none;
  }
}

/* Save for Later buttons — hidden until auth confirmed */
.save-later-btn {
  display: none;
}

body[data-indiekit-auth="true"] .save-later-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  background: none;
  border: 1px solid transparent;
  border-radius: 6px;
  padding: 2px 8px;
  font-size: 0.75rem;
  color: #6b7280;
  transition: all 0.2s ease;
}

body[data-indiekit-auth="true"] .save-later-btn:hover {
  border-color: #d1d5db;
  color: #4a9eff;
}

.save-later--saved {
  color: #4a9eff !important;
  opacity: 0.6;
  pointer-events: none;
}