@import url('accessibility.css');

:root {
  color-scheme: light;
  --background: #f9fafb;
  --surface: #ffffff;
  --surface-alt: #f3f4f6;
  --text: #111827;
  --muted: #6b7280;
  --accent: #0f766e;
  --accent-hover: #115e59;
  --accent-light: rgba(15, 118, 110, 0.1);
  --muted-bg: #f3f4f6;
  --muted-border: #e5e7eb;
  --muted-text: #4b5563;
  --border: #e5e7eb;
  --shadow: rgba(17, 24, 39, 0.08);
  --shadow-hover: rgba(17, 24, 39, 0.12);
  --step--1: 0.9rem;
  --step-0: 1rem;
  --step-1: 1.15rem;
  --step-2: 1.5rem;
  --step-3: 2rem;

  /* Accessibility Variables */
  --font-scale: 1;
}

.bw-mode::after {
  content: "";
  position: fixed;
  inset: 0;
  backdrop-filter: grayscale(100%);
  pointer-events: none;
  z-index: 9999;
}

.bw-mode {
  --accent: #000000;
  --accent-hover: #333333;
  --accent-light: rgba(0, 0, 0, 0.1);
}

.dark-mode.bw-mode {
  --accent: #ffffff;
  --accent-hover: #cccccc;
  --accent-light: rgba(255, 255, 255, 0.1);
}

.eye-comfort-mode::after {
  content: "";
  position: fixed;
  inset: 0;
  background: rgba(255, 165, 0, 0.08); /* Warm amber tint */
  backdrop-filter: sepia(40%) brightness(95%);
  pointer-events: none;
  z-index: 9998;
}

.eye-comfort-mode {
  --accent: #b58900;
}

.dark-mode.eye-comfort-mode::after {
  background: rgba(255, 140, 0, 0.05);
  backdrop-filter: sepia(30%) brightness(90%);
}

.dark-mode {
  color-scheme: dark;
  --background: #111827;
  --surface: #1f2937;
  --surface-alt: #374151;
  --text: #f9fafb;
  --muted: #9ca3af;
  --accent: #2dd4bf;
  --accent-hover: #5eead4;
  --accent-light: rgba(45, 212, 191, 0.15);
  --muted-bg: #374151;
  --muted-border: #4b5563;
  --muted-text: #d1d5db;
  --border: #374151;
  --shadow: rgba(0, 0, 0, 0.3);
  --shadow-hover: rgba(0, 0, 0, 0.5);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: calc(16px * var(--font-scale));
}

body {
  margin: 0;
  min-height: 100%;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: var(--step-0);
  line-height: 1.6;
  color: var(--text);
  background: var(--background);
  transition: background-color 0.4s ease, color 0.4s ease, font-size 0.4s ease;
  animation: pageFadeIn 0.5s ease-out forwards;
}

@keyframes pageFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

body.focus-mode {
  background-color: var(--surface);
}

body.focus-mode .topbar,
body.focus-mode .site-foot {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(-10px);
}

body.focus-mode .app-shell {
  padding-top: 1.5rem;
}

/* Screen Reader Only - Accessibility */
.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;
}

button,
a {
  font: inherit;
}

a {
  color: var(--text);
  text-decoration: none;
  transition: color 200ms ease;
}

.article-body a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

.article-body a:hover,
.article-body a:focus-visible {
  color: var(--accent-hover);
  text-decoration-thickness: 2px;
}

a:hover,
a:focus {
  color: var(--accent-hover);
  text-decoration: underline;
}

#progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
  width: 0%;
  z-index: 100;
  transition: width 100ms ease;
}

.app-shell {
  width: 100%;
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 2rem 3.5rem; /* Removed top padding */
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 3.5rem;
  position: sticky;
  top: 0;
  padding: 1.25rem 2rem;
  margin-left: -2rem;
  margin-right: -2rem;
  background: var(--background);
  z-index: 1000;
  border-bottom: 1px solid var(--border);
  transition: all 0.4s ease;
}

.dark-mode .topbar {
  background: var(--background);
}

.brand a {
  color: var(--accent);
  font-size: clamp(1.95rem, 1.8rem + 0.45vw, 2.2rem);
  font-weight: 600;
  letter-spacing: -0.03em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.35rem;
  font-size: 1.16rem;
  flex-wrap: wrap;
}

.site-nav a,
.site-nav button {
  color: var(--muted);
  border: none;
  background: transparent;
  cursor: pointer;
  padding: 0.35rem 0.55rem;
  font-weight: 500;
  transition: color 180ms ease;
}

.site-nav a:hover,
.site-nav button:hover,
.site-nav a:focus-visible,
.site-nav button:focus-visible {
  color: var(--accent);
  outline: 2px solid currentColor;
  outline-offset: 3px;
}

/* Distinguish Utility Buttons */
#theme-toggle,
#focus-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 1rem;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 600;
  transition: all 0.2s ease;
}

#theme-toggle:hover,
#focus-toggle:hover {
  background: var(--accent-light);
  border-color: var(--accent);
  color: var(--accent);
}

.dark-mode #theme-toggle,
.dark-mode #focus-toggle {
  background: rgba(255, 255, 255, 0.05);
}

.focus-exit {
  display: none;
  position: fixed;
  bottom: 2rem;
  left: 2rem;
  z-index: 5001;
  background: var(--surface);
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 999px;
  padding: 0.6rem 1.25rem;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  box-shadow: 0 4px 12px var(--shadow);
  transition: all 0.2s ease;
  align-items: center;
  gap: 0.6rem;
}

.focus-exit::after {
  content: "";
  position: absolute;
  inset: -1px;
  border: 2px solid var(--accent);
  border-radius: inherit;
  pointer-events: none;
  opacity: 0;
  z-index: -1;
}

.focus-exit:hover {
  background: var(--accent);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 6px 15px var(--accent-light);
}

body.focus-mode .focus-exit {
  display: inline-flex;
}

body.focus-mode .focus-exit::after {
  animation: attention-ring 1.2s cubic-bezier(0.16, 1, 0.3, 1) 3;
}

@keyframes attention-ring {
  0% { 
    transform: scale(1); 
    opacity: 0.8;
  }
  100% { 
    transform: scale(1.6); 
    opacity: 0;
  }
}

.content {
  min-width: 0;
  max-width: 100%;
  min-height: 24rem;
}

.featured {
  max-width: 100%;
  display: flex;
  flex-direction: column;
  padding: 3rem 2.5rem;
  margin-bottom: 3.5rem;
  border: 1px solid var(--border);
  border-radius: 1.25rem;
  background: var(--accent-light);
  box-shadow: 0 24px 60px var(--shadow);
}

.featured-label {
  display: inline-block;
  margin-bottom: 1rem;
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.featured-title {
  margin: 0 0 1rem;
  font-size: var(--step-3);
  line-height: 1.16;
  letter-spacing: -0.025em;
  max-width: 100%;
}

.featured-summary {
  margin: 0 0 1rem;
  font-size: var(--step-1);
  line-height: 1.68;
  color: var(--muted);
  max-width: 68ch;
}

.featured-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  color: var(--muted);
  font-size: var(--step--1);
  line-height: 1.48;
}

.featured-meta span {
  white-space: nowrap;
}

.featured-meta span + span::before {
  content: "•";
  margin: 0 0.7rem;
  color: var(--border);
}

.cover-image {
  position: relative;
  width: 100%;
  min-height: 12rem;
  aspect-ratio: 16 / 9;
  border-radius: 1rem;
  overflow: hidden;
  padding: 0.85rem;
  background: linear-gradient(135deg, var(--accent-light), var(--accent-light));
  margin-bottom: 1.75rem;
  box-shadow: inset 0 0 0 1px var(--border);
}

.cover-image::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: var(--cover-image-url);
  background-size: cover;
  background-position: center;
  filter: blur(20px) saturate(1.1) brightness(0.45);
  transform: scale(1.08);
  pointer-events: none;
  z-index: 0;
}

.cover-image > * {
  position: relative;
  z-index: 1;
}

.cover-image img {
  display: block;
  width: auto;
  max-width: calc(100% - 1.8rem);
  max-height: calc(100% - 1.8rem);
  margin: 0.9rem auto;
  object-fit: contain;
  object-position: center;
  cursor: pointer;
  transition: transform 0.2s ease;
}

.cover-image img:hover {
  transform: scale(1.02);
}

.article-page > .cover-image {
  max-height: 16rem;
  min-height: 10rem;
  aspect-ratio: 16 / 9;
  margin-bottom: 2rem;
}

.article-page > .cover-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.featured .cover-image {
  max-height: 32rem;
}

.post-item .cover-image {
  min-height: 10rem;
  max-height: 16rem;
}

.cover-placeholder {
  display: grid;
  place-items: center;
  color: var(--border);
  font-weight: 600;
  font-size: 0.98rem;
  background: linear-gradient(135deg, var(--accent-light), var(--accent-light));
}

.featured-link,
.post-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.8rem 1.5rem;
  border: 1px solid var(--accent);
  border-radius: 0.5rem;
  background: var(--accent);
  color: white;
  font-size: 0.95rem;
  font-weight: 600;
  transition: all 0.2s ease;
}

.post-link:hover,
.post-link:focus-visible {
  transform: translateY(-2px);
  background: var(--text);
  border-color: var(--text);
  color: var(--background);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.posts-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

.search-hero {
  max-width: 75ch;
  margin-bottom: 2.5rem;
}

.search-controls {
  display: grid;
  gap: 1rem;
  margin-bottom: 1.75rem;
}

.search-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.search-field {
  flex: 1 1 minmax(220px, 30rem);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.search-field input,
.search-field select {
  padding: 0.9rem 1rem;
  border: 1px solid var(--border);
  border-radius: 0.95rem;
  background: var(--surface);
  color: var(--text);
}

.filter-panel {
  display: grid;
  gap: 0.75rem;
}

.filter-heading {
  font-size: 0.95rem;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.tag-filter-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.tag-filter {
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--muted);
  padding: 0.55rem 0.9rem;
  cursor: pointer;
  transition: background-color 180ms ease, color 180ms ease, border-color 180ms ease;
}

.tag-filter.active {
  background: var(--accent);
  color: var(--surface);
  border-color: var(--accent);
}

.search-summary {
  margin-bottom: 1.5rem;
  color: var(--muted);
  font-size: 0.98rem;
}

.search-results {
  display: grid;
  gap: 1.5rem;
  width: 100%;
}

.search-empty {
  padding: 2rem;
  border: 1px solid var(--border);
  border-radius: 1rem;
  background: var(--surface);
  color: var(--muted);
}

.post-item.search-result-item {
  width: 100%;
  margin: 0;
  flex: none;
}



.result-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.result-tag {
  display: inline-flex;
  padding: 0.45rem 0.75rem;
  border-radius: 999px;
  background: var(--accent-light);
  color: var(--muted);
  font-size: 0.9rem;
}

.post-item {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 2.2rem;
  border: 1px solid var(--border);
  border-radius: 1rem;
  background: var(--surface);
  box-shadow: 0 14px 32px var(--accent-light);
  transition: box-shadow 200ms ease, transform 200ms ease;
}

.posts-list > .post-item:last-child:nth-child(odd) {
  grid-column: 1 / -1;
  max-width: calc(50% - 0.75rem);
  width: 100%;
  justify-self: center;
}

.post-chip {
  display: inline-flex;
  align-self: flex-start;
  margin: 0 0 1rem;
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--accent-light);
  border-radius: 999px;
  background: var(--accent-light);
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.post-item:hover {
  box-shadow: 0 18px 40px var(--accent-light);
  transform: translateY(-2px);
}

.post-item:first-of-type {
  margin-top: 0;
}

.post-item h2 {
  margin: 0 0 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--accent-light);
  font-size: clamp(1.56rem, 1.38rem + 0.56vw, 1.9rem);
  line-height: 1.14;
  letter-spacing: -0.025em;
}

.post-item h1 {
  margin: 0 0 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--accent-light);
  font-size: clamp(1.56rem, 1.38rem + 0.56vw, 1.9rem);
  line-height: 1.14;
  letter-spacing: -0.025em;
}

.post-meta {
  margin: 0 0 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--accent-light);
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  color: var(--muted);
  font-size: var(--step--1);
  line-height: 1.45;
}

.meta-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--accent-light);
  border-radius: 999px;
  background: var(--accent-light);
  color: var(--muted);
  font-size: 0.92em;
  line-height: 1.2;
  white-space: nowrap;
}

.meta-chip-date {
  border-color: var(--accent-light);
  border-radius: 0.7rem;
  background: var(--accent-light);
  color: var(--accent);
}

.meta-chip-time {
  border-color: var(--muted-border);
  border-radius: 999px;
  background: var(--muted-bg);
  color: var(--muted-text);
}

.meta-chip-tag {
  border-color: var(--muted-border);
  border-radius: 999px;
  background: var(--muted-bg);
  color: var(--muted-text);
  white-space: normal;
}

.post-summary {
  margin: 0 0 1.5rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--accent-light);
  color: var(--muted);
  max-width: 100%;
  font-size: var(--step-0);
  line-height: 1.68;
}



.article-page {
  width: 100%;
  padding: 0 1.5rem;
}

.article-header {
  margin-bottom: 3rem;
}

.article-meta {
  margin: 0 0 1.2rem;
  color: var(--muted);
  font-size: var(--step--1);
  letter-spacing: 0.02em;
  line-height: 1.5;
}

.article-title {
  margin: 0 0 1.4rem;
  font-size: clamp(1.82rem, 1.7rem + 0.62vw, 2.3rem);
  line-height: 1.14;
  letter-spacing: -0.03em;
}

.article-intro {
  margin: 0 0 1.5rem;
  color: var(--muted);
  font-size: var(--step-1);
  line-height: 1.68;
  max-width: 68ch;
}

.article-header-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr 22rem;
  gap: 2.5rem;
  align-items: start;
}

.article-body {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--text);
  max-width: 88ch;
}

.article-body h2,
.article-body h3,
.article-body h4 {
  margin: 2.8rem 0 1rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  scroll-margin-top: 5.5rem;
}

.article-body h2 {
  font-size: 1.6rem;
}

.article-body p {
  margin: 0 0 1.7rem;
}

.article-body ul,
.article-body ol {
  margin: 0 0 1.7rem 1.6rem;
}

.article-body li {
  margin: 0.55rem 0;
}

.article-body blockquote {
  margin: 0 0 1.7rem;
  padding-left: 1rem;
  border-left: 2px solid var(--border);
  color: var(--muted);
}

.article-body pre {
  max-width: 100%;
  margin: 0 0 1.7rem;
  padding: 1rem 1.1rem;
  overflow-x: auto;
  overflow-y: hidden;
  border: 1px solid var(--border);
  border-radius: 0.9rem;
  background: var(--surface-alt);
  -webkit-overflow-scrolling: touch;
}

.article-body pre code {
  display: block;
  white-space: pre;
  word-break: normal;
  overflow-wrap: normal;
}

.article-body code {
  font-family: Consolas, Monaco, "Courier New", monospace;
  font-size: 0.94em;
}

.article-body img {
  display: block;
  width: auto;
  max-width: min(100%, 44rem);
  max-height: 28rem;
  height: auto;
  margin: 2rem auto;
  border-radius: 0.9rem;
  object-fit: contain;
  box-shadow: 0 14px 32px var(--accent-light);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.article-body img:hover {
  transform: scale(1.02);
  box-shadow: 0 18px 40px var(--accent-light);
}

.article-body a {
  color: var(--accent-hover);
  text-decoration: underline;
}

.article-toc {
  position: sticky;
  top: 6rem;
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.5rem 1.4rem;
  max-width: 22rem;
  max-height: calc(100vh - 8rem);
  overflow-y: auto;
  background: var(--surface);
}

.article-toc h2 {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 0.95rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.article-toc ul {
  list-style: none;
  margin: 0 0 0 0.5rem;
  padding: 0;
  border-left: 2px solid var(--border);
}

.article-toc li {
  margin: 0;
  position: relative;
}

.article-toc .toc-level-2 {
  padding-left: 1rem;
  margin-top: 0.5rem;
}

.article-toc .toc-level-2 > a {
  font-weight: 600;
  color: var(--text);
}

.article-toc .toc-level-3 {
  padding-left: 1.5rem;
  font-size: 0.95em;
}

.article-toc .toc-level-3::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 0.8rem;
  height: 2px;
  background-color: var(--border);
}

.article-toc .toc-level-4 {
  padding-left: 2.2rem;
  font-size: 0.9em;
}

.article-toc .toc-level-4::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 1.5rem;
  height: 2px;
  background-color: var(--border);
}

.article-toc a {
  display: block;
  padding: 0.35rem 0;
  color: var(--muted-text);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 150ms ease, font-weight 150ms ease;
}

.article-toc a:hover,
.article-toc a:focus-visible {
  text-decoration: underline;
}

.article-toc a.active {
  color: var(--accent);
  font-weight: 600;
}

.article-tags {
  margin: 1.8rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.article-tags a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.94rem;
}

.article-tags a:hover,
.article-tags a:focus-visible {
  color: var(--accent-hover);
  text-decoration: underline;
}

.site-foot {
  margin-top: 4rem;
  border-top: 1px solid var(--border);
  padding-top: 2.3rem;
  color: var(--muted);
  font-size: 0.95rem;
  transition: all 0.4s ease;
}

.site-note {
  margin: 0;
}

.skeleton-card,
.skeleton-article {
  pointer-events: none;
}

.skeleton-block,
.skeleton-line,
.skeleton-chip,
.skeleton-button {
  position: relative;
  overflow: hidden;
  background: var(--accent-light);
}

.skeleton-block::after,
.skeleton-line::after,
.skeleton-chip::after,
.skeleton-button::after {
  content: "";
  position: absolute;
  inset: 0;
  transform: translateX(-100%);
  background: linear-gradient(90deg, transparent, var(--border), transparent);
  animation: skeleton-shimmer 1.5s ease-in-out infinite;
}

.skeleton-line {
  border-radius: 0.75rem;
}

.skeleton-title {
  height: 1.6rem;
  width: 82%;
  margin: 0 0 1rem;
}

.skeleton-text {
  height: 1rem;
  width: 100%;
  margin: 0 0 0.85rem;
}

.skeleton-text-short {
  width: 68%;
}

.skeleton-meta {
  height: 1rem;
  width: 10rem;
  margin: 0 0 1rem;
}

.skeleton-article-title {
  height: 2.4rem;
  width: 78%;
  margin: 0 0 1rem;
}

.skeleton-article-title-short {
  width: 54%;
}

.skeleton-paragraph {
  height: 1rem;
  width: 100%;
  margin: 0 0 1rem;
}

.skeleton-chip {
  min-width: 5.5rem;
  min-height: 2rem;
  border-radius: 999px;
  border: none;
}

.skeleton-chip-wide {
  min-width: 10rem;
}

.skeleton-button {
  align-self: flex-end;
  width: 8.5rem;
  height: 3rem;
  border-radius: 999px;
  margin-top: auto;
}

.skeleton-posts .cover-image,
.skeleton-card .cover-image {
  margin-bottom: 1rem;
}

.skeleton-posts .post-meta,
.skeleton-card .post-meta {
  border-bottom: 1px solid var(--accent-light);
}

@keyframes skeleton-shimmer {
  100% {
    transform: translateX(100%);
  }
}

.image-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.image-modal.show {
  opacity: 1;
  visibility: visible;
}

.image-modal img {
  max-width: 90%;
  max-height: 90%;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.image-modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  background: var(--border);
  border: none;
  color: white;
  font-size: 24px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.2s ease;
}

.image-modal-close:hover {
  background: var(--border);
}

@media (max-width: 1024px) {
  body {
    font-size: 1rem;
  }

  .app-shell {
    max-width: 60rem;
    padding: 2.5rem 1.5rem 3rem;
  }

  .article-layout {
    grid-template-columns: 1fr;
  }

  .article-toc {
    display: none;
  }

  .posts-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  body {
    font-size: 0.98rem;
    line-height: 1.68;
  }

  .app-shell {
    padding: 1.75rem 1rem 2rem;
  }

  .topbar {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
  }

  .site-nav {
    display: none; /* Fallback for when JS is not active, but toggle should handle it */
  }

  .site-nav.is-active {
    display: flex;
  }

  .featured-title {
    max-width: 100%;
  }

  .posts-list {
    grid-template-columns: 1fr;
  }

  .posts-list > .post-item:last-child:nth-child(odd) {
    grid-column: auto;
    max-width: none;
  }

  .post-item {
    padding: 1.6rem;
  }

  .article-title {
    font-size: clamp(2rem, 7vw, 3.1rem);
  }

  .featured-link,
  .post-link,
  .site-nav a,
  .site-nav button,
  .focus-exit {
    min-height: 2.4rem;
  }
}

.share-button {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.6rem 1rem;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 2px 4px var(--shadow);
}

.share-button:hover {
  background: var(--accent-light);
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
  box-shadow: 0 4px 8px var(--shadow);
}

.share-button.copied {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.share-button svg {
  opacity: 0.8;
}

.share-button:hover svg {
  opacity: 1;
}

@media (max-width: 768px) {
  .article-header-actions {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
}

.post-stats {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
  margin-bottom: 1rem;
}

.post-stats-header {
  margin-bottom: 1rem;
  opacity: 0.8;
}

.stat-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.stat-item svg {
  opacity: 0.6;
}

.footer-left {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.post-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 1.25rem;
  border-top: 1px solid var(--accent-light);
}

.stat-item {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--muted);
  opacity: 0.8;
  margin-left: -0.1rem;
}

.footer-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.post-stats-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 1rem;
  opacity: 0.8;
}

.share-button-lite {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  cursor: pointer;
  padding: 0.8rem 1.2rem;
  border-radius: 0.5rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.2s ease;
}

.share-button-lite:hover {
  background: var(--accent-light);
  border-color: var(--accent);
  color: var(--accent);
}

.share-button-lite svg {
  width: 16px;
  height: 16px;
}

/* Stat Increment Animation */
.stat-increment-badge {
  position: absolute;
  color: var(--accent);
  font-weight: 700;
  font-size: 0.85rem;
  pointer-events: none;
  animation: floatUpAndFade 0.8s ease-out forwards;
  z-index: 10;
}

@keyframes floatUpAndFade {
  0% {
    opacity: 0;
    transform: translateY(0);
  }
  20% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: translateY(-20px);
  }
}

.stat-pop {
  animation: statPop 0.3s ease-out;
}

@keyframes statPop {
  0% { transform: scale(1); }
  50% { transform: scale(1.4); color: var(--accent); }
  100% { transform: scale(1); }
}


.share-button-lite.copied {
  color: var(--accent);
  background: var(--accent-light);
}

/* --- Mobile Responsiveness --- */

/* Nav Toggle Button */
.nav-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--text);
  cursor: pointer;
  padding: 0.5rem;
  z-index: 1100;
  border-radius: 0.5rem;
  transition: background-color 0.2s ease;
}

.nav-close {
  display: none;
}

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  body.nav-active .topbar {
    z-index: 2200;
  }

  .nav-toggle {
    z-index: 2201;
  }

  .site-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    margin: auto;
    width: calc(100% - 3rem);
    max-width: 24rem;
    height: fit-content;
    background: var(--surface);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 1.25rem;
    padding: 3.5rem 2rem 2.5rem;
    z-index: 3000;
    border-radius: 1.5rem;
    box-shadow: 0 32px 120px rgba(0, 0, 0, 0.6);
    opacity: 0;
    visibility: hidden;
    transform: scale(0.95);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease, visibility 0.3s ease;
  }

  /* Backdrop for the modal */
  body.nav-active::after {
    content: "";
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 2001;
    animation: fadeIn 0.3s ease;
  }

  .site-nav.is-active {
    transform: scale(1);
    opacity: 1;
    visibility: visible;
  }

  body.nav-active .nav-toggle {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
  }

  .nav-close {
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    top: 1.25rem;
    right: 1.25rem;
    width: 2.5rem;
    height: 2.5rem;
    font-size: 1.5rem;
    background: var(--surface-alt);
    border: none;
    color: var(--text);
    cursor: pointer;
    border-radius: 50%;
    line-height: 1;
    transition: all 0.2s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  }

  .nav-close:hover {
    background: var(--accent);
    color: white;
    transform: rotate(90deg);
  }

  .site-nav a,
  .site-nav button:not(.nav-close) {
    font-size: 1.25rem;
    width: 100%;
    text-align: center;
    padding: 0.75rem;
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
  }

  .app-shell {
    padding: 4.5rem 1rem 3rem; /* Added top padding for fixed navbar */
    max-width: 100%;
    overflow-x: hidden;
  }

  .topbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    height: auto;
    padding: 1rem 1.25rem;
    margin: 0;
    margin-bottom: 0;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px var(--shadow);
    transition: height 0s, background-color 0.3s ease;
  }

  body.nav-active .topbar {
    height: 100dvh;
    background: transparent !important;
    border: none;
    box-shadow: none;
    pointer-events: none;
    z-index: 2200;
  }

  body.nav-active .topbar > * {
    pointer-events: auto;
  }

  .nav-toggle {
    margin-right: 0.25rem;
  }

  .brand a {
    font-size: 1.6rem;
  }

  .posts-list {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    width: 100%;
  }

  .post-item {
    padding: 1.25rem;
    width: 100%;
  }

  .post-footer {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem;
  }

  .footer-left {
    width: 100%;
    margin-bottom: 0.5rem;
  }

  .footer-right {
    width: 100%;
    display: flex;
    gap: 0.75rem;
  }

  .post-link, .share-button-lite, .share-button {
    flex: 1;
    padding: 0.75rem 0.5rem;
    font-size: 0.85rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
    transition: all 0.2s ease;
  }

  .share-button-lite:hover, .share-button:hover {
    background: var(--accent-light);
    border-color: var(--accent);
  }

  .article-title {
    font-size: 1.6rem;
  }
}

/* Tablet / Medium Screens */
@media (min-width: 769px) and (max-width: 1024px) {
  .posts-list {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .app-shell {
    padding: 2rem 1.5rem 3.5rem;
  }
}

/* Code Blocks */
pre {
  position: relative;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 1.25rem;
  margin: 1.5rem 0;
  overflow-x: auto;
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.9rem;
  line-height: 1.5;
}

code {
  font-family: inherit;
  color: var(--text);
}

.code-container {
  position: relative;
  margin: 1.5rem 0;
}

.code-container pre {
  margin: 0;
}

.copy-code-btn {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.75rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  opacity: 0;
  transition: all 0.2s ease;
  z-index: 10;
}

.code-container:hover .copy-code-btn {
  opacity: 1;
}

.copy-code-btn:hover {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.copy-code-btn.copied {
  background: #10b981;
  color: white;
  border-color: #10b981;
}

.dark-mode pre {
  background: #1e293b;
}

.dark-mode .copy-code-btn {
  background: #334155;
}
/* Content Protection */
body {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

/* Allow selection in code blocks */
.code-container,
pre,
code,
input,
textarea {
  -webkit-user-select: text;
  -moz-user-select: text;
  -ms-user-select: text;
  user-select: text;
}

/* Prevent image dragging */
img {
  -webkit-user-drag: none;
}