/* ============================================
   Skepsi — Minimalist Blog Stylesheet
   Colors: Black & White only
   ============================================ */

/* --- Animations --- */
@keyframes fade-in {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes reveal-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in {
  animation: fade-in 0.8s ease-out both;
}

.animate-fade-in-delay {
  animation: fade-in 0.8s ease-out 0.15s both;
}

.article-item {
  animation: fade-in-up 0.5s ease-out both;
}

.article-item:nth-child(1) { animation-delay: 0.05s; }
.article-item:nth-child(2) { animation-delay: 0.10s; }
.article-item:nth-child(3) { animation-delay: 0.15s; }
.article-item:nth-child(4) { animation-delay: 0.20s; }
.article-item:nth-child(5) { animation-delay: 0.25s; }
.article-item:nth-child(6) { animation-delay: 0.30s; }
.article-item:nth-child(7) { animation-delay: 0.35s; }
.article-item:nth-child(8) { animation-delay: 0.40s; }
.article-item:nth-child(9) { animation-delay: 0.45s; }
.article-item:nth-child(10) { animation-delay: 0.50s; }

/* --- Article List Item Hover / Touch --- */
.article-link {
  position: relative;
  display: block;
  padding: 1.25rem 0;
  transition: padding-left 0.3s ease;
  -webkit-tap-highlight-color: transparent;
}

@media (min-width: 640px) {
  .article-link {
    padding: 1.5rem 0;
  }
}

.article-link:hover {
  padding-left: 1rem;
}

.article-link:active {
  opacity: 0.6;
}

.article-link::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 0;
  height: 1px;
  background: currentColor;
  opacity: 0.3;
  transition: width 0.3s ease;
}

.article-link:hover::before {
  width: 0.5rem;
}

/* --- Prose / Markdown Content Styling --- */
.prose-custom {
  line-height: 1.75;
  overflow-wrap: break-word;
  word-break: break-word;
}

@media (min-width: 640px) {
  .prose-custom {
    line-height: 1.8;
  }
}

.prose-custom h1 {
  font-size: 1.5rem;
  font-weight: 300;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
}

.prose-custom h2 {
  font-size: 1.25rem;
  font-weight: 400;
  margin-top: 2rem;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}

.prose-custom h3 {
  font-size: 1.125rem;
  font-weight: 500;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

@media (min-width: 640px) {
  .prose-custom h1 {
    font-size: 2rem;
    margin-top: 3rem;
    margin-bottom: 1rem;
  }
  .prose-custom h2 {
    font-size: 1.5rem;
    margin-top: 2.5rem;
    margin-bottom: 0.75rem;
  }
  .prose-custom h3 {
    font-size: 1.25rem;
    margin-top: 2rem;
  }
}

/* Scroll offset for anchor navigation (clears the fixed navbar) */
.prose-custom h1,
.prose-custom h2,
.prose-custom h3 {
  scroll-margin-top: 5rem;
}

.prose-custom p {
  margin-bottom: 1.5rem;
}

.prose-custom a {
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  opacity: 0.8;
  transition: opacity 0.2s ease;
}

.prose-custom a:hover {
  opacity: 1;
}

.prose-custom blockquote {
  border-left: 2px solid currentColor;
  padding-left: 1rem;
  margin: 1.5rem 0;
  opacity: 0.7;
  font-style: italic;
}

@media (min-width: 640px) {
  .prose-custom blockquote {
    padding-left: 1.5rem;
    margin: 2rem 0;
  }
}

.prose-custom code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8em;
  padding: 0.15em 0.4em;
  border-radius: 3px;
  background: rgba(0, 0, 0, 0.06);
}

@media (min-width: 640px) {
  .prose-custom code {
    font-size: 0.875em;
  }
}

.dark .prose-custom code {
  background: rgba(255, 255, 255, 0.1);
}

.prose-custom pre {
  margin: 1.5rem -1rem;
  padding: 1rem;
  border-radius: 6px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid rgba(0, 0, 0, 0.1);
  background: rgba(0, 0, 0, 0.03);
}

@media (min-width: 640px) {
  .prose-custom pre {
    margin: 2rem 0;
    padding: 1.5rem;
  }
}

.dark .prose-custom pre {
  border-color: rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.05);
}

.prose-custom pre code {
  padding: 0;
  background: transparent;
  font-size: 0.8em;
  line-height: 1.6;
}

@media (min-width: 640px) {
  .prose-custom pre code {
    font-size: 0.85em;
  }
}

.prose-custom ul {
  list-style: none;
  padding-left: 1.5rem;
  margin: 1.5rem 0;
}

.prose-custom ul li {
  position: relative;
  margin-bottom: 0.5rem;
}

.prose-custom ul li::before {
  content: '—';
  position: absolute;
  left: -1.5rem;
  opacity: 0.3;
}

.prose-custom ol {
  padding-left: 1.5rem;
  margin: 1.5rem 0;
}

.prose-custom ol li {
  margin-bottom: 0.5rem;
}

.prose-custom img {
  max-width: 100%;
  margin: 2rem 0;
  border-radius: 4px;
}

.prose-custom hr {
  border: none;
  border-top: 1px solid currentColor;
  opacity: 0.15;
  margin: 3rem 0;
}

.prose-custom .table-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 1.5rem -1rem;
  padding: 0 1rem;
}

@media (min-width: 640px) {
  .prose-custom .table-wrapper {
    margin: 2rem 0;
    padding: 0;
  }
}

.prose-custom table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.85em;
  min-width: 400px;
}

@media (min-width: 640px) {
  .prose-custom table {
    margin: 2rem 0;
    font-size: 0.9em;
    min-width: unset;
  }
}

.prose-custom th,
.prose-custom td {
  padding: 0.5rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
  white-space: nowrap;
}

@media (min-width: 640px) {
  .prose-custom th,
  .prose-custom td {
    padding: 0.75rem 1rem;
    white-space: normal;
  }
}

.dark .prose-custom th,
.dark .prose-custom td {
  border-bottom-color: rgba(255, 255, 255, 0.1);
}

.prose-custom th {
  font-weight: 500;
  font-family: 'Inter', sans-serif;
  font-size: 0.8em;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  opacity: 0.6;
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(0, 0, 0, 0.15);
  border-radius: 3px;
}

.dark ::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
}

/* --- Selection --- */
::selection {
  background: rgba(0, 0, 0, 0.15);
  color: inherit;
}

.dark ::selection {
  background: rgba(255, 255, 255, 0.2);
  color: inherit;
}

/* --- Smooth page transitions --- */
.page-enter {
  animation: fade-in-up 0.4s ease-out both;
}

/* --- Share Button --- */
@keyframes share-bounce {
  0% { transform: scale(1); }
  20% { transform: scale(1.3) rotate(12deg); }
  40% { transform: scale(0.9) rotate(-6deg); }
  60% { transform: scale(1.1) rotate(3deg); }
  80% { transform: scale(0.95); }
  100% { transform: scale(1) rotate(0deg); }
}

.share-animate {
  animation: share-bounce 0.5s ease both;
}

#share-button.copied {
  border-color: rgba(0, 0, 0, 0.4);
  color: rgba(0, 0, 0, 0.7);
}

.dark #share-button.copied {
  border-color: rgba(255, 255, 255, 0.4);
  color: rgba(255, 255, 255, 0.7);
}

/* --- Scroll Reveal --- */
.reveal {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* --- Reading Progress Bar --- */
#progress-bar {
  transition: width 0.05s linear, background-color 0.5s;
}

/* --- Table of Contents --- */
.toc-link {
  display: block;
  padding: 0.5rem 0 0.5rem 1.3rem;
  font-family: 'Inter', sans-serif;
  font-size: 1.2rem;
  line-height: 1.5;
  color: rgba(0, 0, 0, 0.35);
  text-decoration: none;
  border-left: 2px solid transparent;
  margin-left: -2px;
  transition: color 0.3s ease, border-color 0.3s ease;
  -webkit-tap-highlight-color: transparent;
}

.dark .toc-link {
  color: rgba(255, 255, 255, 0.3);
}

.toc-link:hover {
  color: rgba(0, 0, 0, 0.6);
}

.dark .toc-link:hover {
  color: rgba(255, 255, 255, 0.6);
}

.toc-link.active {
  color: rgba(0, 0, 0, 0.8);
  border-left-color: rgba(0, 0, 0, 0.8);
}

.dark .toc-link.active {
  color: rgba(255, 255, 255, 0.8);
  border-left-color: rgba(255, 255, 255, 0.8);
}

.toc-link-h3 {
  padding-left: 2.6rem;
  font-size: 1.05rem;
}

/* Mobile TOC links */
.toc-link-mobile {
  display: block;
  font-family: 'Inter', sans-serif;
  font-size: 0.8rem;
  line-height: 1.4;
  color: rgba(0, 0, 0, 0.45);
  text-decoration: none;
  padding: 0.25rem 0;
  transition: color 0.2s ease;
  -webkit-tap-highlight-color: transparent;
}

.dark .toc-link-mobile {
  color: rgba(255, 255, 255, 0.4);
}

.toc-link-mobile:active {
  color: rgba(0, 0, 0, 0.8);
}

.dark .toc-link-mobile:active {
  color: rgba(255, 255, 255, 0.8);
}

.toc-link-mobile-h3 {
  padding-left: 1rem;
  font-size: 0.75rem;
}

/* --- Mobile-specific --- */

/* Safe area insets for notched devices */
@supports (padding: env(safe-area-inset-bottom)) {
  body {
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
  }
  footer {
    padding-bottom: env(safe-area-inset-bottom);
  }
}

/* Disable hover effects on touch devices */
@media (hover: none) {
  .article-link:hover {
    padding-left: 0;
  }
  .article-link:hover::before {
    width: 0;
  }
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
}