:root {
  /* Fonts */
  --font-heading: "Newsreader", serif;
  --font-body: "Instrument Sans", sans-serif;
  --font-mono: "IBM Plex Mono", monospace;

  /* Light Theme (Default) */
  --color-bg: #faf7f2;
  --color-text: #141b2d;
  --color-accent: #2563eb;
  --color-border: #e2e8f0;
  --color-nav-bg: transparent;
  --color-code-bg: #1e1e20;
  --color-code-text: #e1e1e3;
  --color-shadow: rgba(0, 0, 0, 0.05);

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;

  --content-width: 47rem;
  --nav-height: 4rem;

  /* TOC Dimensions & Breakpoints */
  --toc-width: 14rem;
  --toc-gap-standard: 2.5rem;
  --toc-gap-wide: 4rem;
  --toc-sticky-top: 20px;

  /* Offsets are (Gap + Width) */
  --toc-offset-standard: 16.5rem;
  --toc-offset-wide: 18rem;

  --breakpoint-toc: 1270px;
  --breakpoint-wide: 1400px;
}

[data-theme="dark"] {
  /* Neutralized Dark Theme */
  --color-bg: #1e1e20;
  --color-text: #e3e0d7;
  --color-accent: #60a5fa;
  --color-border: #333335;
  --color-nav-bg: transparent;
  --color-code-bg: #2a2a2d;
  --color-shadow: rgba(0, 0, 0, 0.2);
}

/* Reset & Base */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 100%;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

main {
  flex: 1;
  width: 100%;
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 0.75rem;
}

article.post {
  position: relative;
}

/* Smooth transitions only for specific properties after load */
body.theme-transition,
body.theme-transition #nav-bar,
body.theme-transition .toc-container,
body.theme-transition footer,
body.theme-transition blockquote,
body.theme-transition summary,
body.theme-transition .tag,
body.theme-transition pre {
  transition:
    background-color 0.3s ease,
    color 0.3s ease,
    border-color 0.3s ease;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}

h1 {
  font-size: 3rem;
}
h2 {
  font-size: 2.25rem;
}
h3 {
  font-size: 1.75rem;
}
h4 {
  font-size: 1.5rem;
}
h5 {
  font-size: 1.25rem;
}
h6 {
  font-size: 1rem;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: opacity 0.2s;
}

a:hover {
  opacity: 0.8;
}

code,
pre,
.mono {
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

pre {
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: 4px;
  background-color: var(--color-code-bg) !important;
  color: var(--color-code-text);
  overflow-x: auto;
  white-space: pre-wrap;
  white-space: -moz-pre-wrap;
  white-space: -pre-wrap;
  white-space: -o-pre-wrap;
  word-wrap: break-word;
  margin: var(--spacing-sm) 0;
}

/* Navigation */
#nav-bar {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  padding: 0 0.75rem;
  width: 100%;
  max-width: var(--content-width);
  margin: 0 auto;
  background-color: var(--color-bg);
  font-family: var(--font-mono);
}

#nav-bar a {
  color: var(--color-text);
  text-transform: lowercase;
}

.nav-logo {
  font-weight: 700;
  font-size: 1.1rem;
}

.nav-links {
  margin-left: auto;
  margin-right: var(--spacing-sm);
}

.nav-links a {
  margin-left: var(--spacing-sm);
}

#nav-bar a.active {
  color: var(--color-accent);
  font-weight: 600;
}

.theme-toggle {
  cursor: pointer;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
}

.theme-toggle .icon {
  width: 100%;
  height: 100%;
  fill: currentColor;
}

/* Hero Section / Header */
.post-header {
  margin-bottom: var(--spacing-md);
  text-align: center;
  position: relative;
}

.post-header h1 {
  font-size: 4.2rem;
  margin-bottom: var(--spacing-xs);
}

time,
address {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--color-text);
  opacity: 0.8;
  display: inline-block;
  margin: 0 0.5rem;
}

.accent-data {
  color: var(--color-accent);
}

.post-header .accent-data {
  color: var(
    --color-text
  ); /* Remove blue from standard header to avoid "link" look */
}

/* Hero Banner Styles */
.hero-wrapper {
  position: relative;
  width: 100vw;
  left: 50%;
  right: 50%;
  margin-left: -50vw;
  margin-right: -50vw;
  margin-bottom: var(--spacing-md);
  overflow: hidden;
}

.hero-banner {
  width: 100%;
  height: 60vh;
  min-height: 400px;
  object-fit: cover;
  display: block;
}

.hero-overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: white;
  z-index: 10;
  width: 90%;
  max-width: var(--content-width);

  /* Enhanced Contrast Glassmorphism */
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  padding: var(--spacing-md);
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-overlay h1 {
  color: white;
  text-shadow: 0 4px 12px rgba(0, 0, 0, 0.8);
  margin-top: 0;
  font-size: clamp(2.5rem, 8vw, 4.2rem);
}

.hero-overlay time,
.hero-overlay address {
  color: rgba(255, 255, 255, 0.9);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.8);
}

.hero-overlay .accent-data {
  color: #faf8f5;
}

/* TOC */
.toc-container {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  padding: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  border-radius: 4px;
  font-family: var(--font-mono);
}

.toc-container h2 {
  font-family: var(--font-mono);
  font-size: 1rem;
  text-transform: uppercase;
  margin-top: 0;
  margin-bottom: var(--spacing-xs);
}

.toc-container ul {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

.toc-container ul ul {
  padding-left: var(--spacing-sm);
}

.toc-container a {
  display: block;
  padding: 0.2rem 0;
  color: var(--color-text);
  font-size: 0.9rem;
  border-left: 2px solid transparent;
  padding-left: 0.5rem;
}

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

/* Post Content Styling */
.post-content {
  font-size: 1.125rem;
}

.post-content img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
  cursor: zoom-in;
}

.post-content p {
  margin-bottom: var(--spacing-sm);
}

/* Accordions */
details {
  margin-bottom: var(--spacing-sm);
}

summary {
  cursor: pointer;
  font-family: var(--font-mono);
  text-transform: uppercase;
  padding: var(--spacing-sm);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  list-style: none;
  font-weight: 500;
}

summary::-webkit-details-marker {
  display: none;
}

details[open] summary {
  border-bottom: 1px solid var(--color-border);
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
  background-color: rgba(0, 0, 0, 0.02);
}

.accordion-content {
  padding: var(--spacing-sm) 0;
}

/* Blockquotes */
blockquote {
  margin: var(--spacing-md) 0;
  border-left: 4px solid var(--color-accent);
  background: rgba(127, 127, 127, 0.05);
  padding: var(--spacing-xs) var(--spacing-sm) var(--spacing-xs)
    var(--spacing-md);
  font-style: italic;
}

blockquote p:first-child {
  margin-top: 0;
}

blockquote p:last-child {
  margin-bottom: 0;
}

/* Tags */
.post-tags {
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-sm);
  border-top: 1px solid var(--color-border);
  opacity: 1;
}

.tag {
  display: inline-block;
  font-family: var(--font-mono);
  margin-right: var(--spacing-xs);
  font-size: 0.9rem;
}

/* Footer */
footer {
  text-align: center;
  padding: var(--spacing-md) 0;
  font-size: 0.9rem;
  opacity: 0.7;
  border-top: 1px solid var(--color-border);
  max-width: var(--content-width);
  width: 100%;
  margin: 0 auto;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 0.75rem;
  font-family: var(--font-mono);
}

.footer-content a {
  color: var(--color-text);
}

.footer-content a:hover {
  color: var(--color-accent);
}

/* Post Lists */
.posts,
.content-list {
  list-style: none;
  padding: 0;
  margin: var(--spacing-md) 0;
}

.posts li,
.title-list {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--color-border);
}

.posts li:last-child,
.title-list:last-child {
  border-bottom: none;
}

.posts a,
.content-link {
  font-size: 1.25rem;
  font-weight: 500;
  font-family: var(--font-heading);
  color: var(--color-text);
}

.posts a:hover,
.content-link:hover {
  color: var(--color-accent);
}

.date,
.content-meta {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--color-text);
  opacity: 0.6;
  flex-shrink: 0;
  margin-left: var(--spacing-sm);
}

/* Pagination */
.pagination {
  margin-top: var(--spacing-lg);
  display: flex;
  justify-content: center;
}

.pagination-inner {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.page-item {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.page-item:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.page-current {
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.icon {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

/* Lightbox */
.lightbox-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  cursor: zoom-out;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.lightbox-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.lightbox-image {
  max-width: 90%;
  max-height: 90%;
  object-fit: contain;
  transform: scale(0.9);
  transition: transform 0.3s ease;
  border-radius: 4px;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
}

.lightbox-overlay.active .lightbox-image {
  transform: scale(1);
}

/* Responsive */
@media (min-width: 1270px) {
  /* TOC sidebar */
  .toc-container {
    position: absolute;
    top: 0;
    left: calc(var(--toc-offset-standard) * -1);
    width: var(--toc-width);
    border: none;
    background: transparent;
    padding: 0;
    margin-bottom: 0;
    text-align: left;
  }

  .toc-container.sticky {
    position: fixed;
    top: var(--toc-sticky-top);
  }

  .toc-container h2 {
    font-size: 0.9rem;
    opacity: 0.8;
  }
}

@media (min-width: 1400px) {
  .toc-container {
    left: calc(var(--toc-offset-wide) * -1);
  }
}

@media (max-width: 1269px) {
  .toc-container {
    display: block;
    position: static;
    width: 100%;
  }
}

@media (max-width: 768px) {
  h1 {
    font-size: 2.5rem;
  }
  .post-header h1 {
    font-size: 3rem;
  }

  .hero-banner {
    height: 40vh;
  }

  .hero-overlay {
    width: 95%;
    padding: var(--spacing-sm);
  }
}