/* Act Online - Bespoke Editorial & Technical Publication Stylesheet */

:root {
  /* Font Families - Using native system stacks only (no remote loads) */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-serif: "Charter", "Bitstream Charter", "Sitka Text", "Cambria", "Georgia", serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  /* Color System - Warm Editorial Light Theme */
  --bg-color: #faf9f6;          /* Tactile warm paper */
  --bg-card: #ffffff;
  --text-primary: #121417;      /* Rich typewriter ink */
  --text-secondary: #474b52;
  --text-muted: #6e7480;
  
  --primary: hsl(12, 75%, 44%);        /* Deep Terracotta/Rust */
  --primary-hover: hsl(12, 75%, 34%);
  --primary-light: hsl(12, 60%, 94%);
  
  --secondary: hsl(175, 55%, 26%);     /* Pine Teal */
  --secondary-hover: hsl(175, 55%, 18%);
  --secondary-light: hsl(175, 50%, 93%);

  --border-color: #121417;             /* Crisp technical lines */
  --border-muted: #e0ded9;
  
  --shadow-flat: 4px 4px 0px 0px var(--text-primary);
  --shadow-flat-hover: 7px 7px 0px 0px var(--text-primary);
  
  --container-width: 1160px;
  --container-width-narrow: 68ch;      /* Optimal readable line width */
  --transition: 0.22s cubic-bezier(0.2, 0.8, 0.2, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    /* Color System - Slate Technical Dark Theme */
    --bg-color: #0d1013;
    --bg-card: #15181c;
    --text-primary: #f3f5f8;
    --text-secondary: #a3a9b5;
    --text-muted: #626975;
    
    --primary: hsl(12, 85%, 54%);
    --primary-hover: hsl(12, 85%, 64%);
    --primary-light: hsl(12, 35%, 15%);
    
    --secondary: hsl(175, 50%, 45%);
    --secondary-hover: hsl(175, 50%, 55%);
    --secondary-light: hsl(175, 30%, 14%);
    
    --border-color: #f3f5f8;
    --border-muted: #242930;
    
    --shadow-flat: 4px 4px 0px 0px var(--text-primary);
    --shadow-flat-hover: 7px 7px 0px 0px var(--text-primary);
  }
}

/* Base Styles & Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Accessibility Skip Link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background-color: var(--primary);
  color: #ffffff;
  padding: 0.75rem 1.5rem;
  font-weight: 700;
  font-family: var(--font-sans);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  z-index: 1000;
  border: 2px solid var(--border-color);
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 1rem;
  outline: none;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-color);
  border-left: 1px solid var(--border-muted);
}
::-webkit-scrollbar-thumb {
  background: var(--text-muted);
  border: 2px solid var(--bg-color);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* Typography Base */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 850;
  line-height: 1.15;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition), border-color var(--transition);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Base Layout Containers */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container-narrow {
  width: 100%;
  max-width: var(--container-width-narrow);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Reading Progress Bar (Scroll-driven animation) */
.reading-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(to right, var(--primary), var(--secondary));
  transform-origin: 0% 50%;
  transform: scaleX(0);
  z-index: 1001;
}

@supports (animation-timeline: scroll()) {
  .reading-progress-bar {
    animation: grow-progress auto linear;
    animation-timeline: scroll(viewport);
  }
}

@keyframes grow-progress {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

/* Header & Navigation */
.site-header {
  background-color: var(--bg-color);
  border-bottom: 2px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 1.25rem 0;
  transition: padding 0.3s ease;
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-logo {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 1.8rem;
  letter-spacing: -0.04em;
  display: flex;
  align-items: center;
  gap: 0.15rem;
  text-transform: uppercase;
}

.logo-dot {
  width: 8px;
  height: 8px;
  background-color: var(--primary);
  border-radius: 50%;
  display: inline-block;
  animation: pulse-dot 2.5s infinite ease-in-out;
}

@keyframes pulse-dot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.4); opacity: 0.6; }
}

.site-nav ul {
  display: flex;
  list-style: none;
  gap: 2.5rem;
  align-items: center;
}

.site-nav a {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  padding: 0.25rem 0;
  position: relative;
}

.site-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--primary);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition);
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--primary);
}

.site-nav a:hover::after,
.site-nav a.active::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* Responsive Mobile Navigation */
@media (max-width: 680px) {
  .header-container {
    flex-direction: column;
    gap: 1rem;
  }
  .site-logo {
    font-size: 1.6rem;
  }
  .site-nav {
    width: 100%;
    border-top: 1px solid var(--border-muted);
    padding-top: 0.75rem;
  }
  .site-nav ul {
    gap: 1.25rem;
    justify-content: center;
    overflow-x: auto;
    width: 100%;
    scrollbar-width: none;
  }
  .site-nav ul::-webkit-scrollbar {
    display: none;
  }
  .site-nav li {
    flex-shrink: 0;
  }
}

/* Homepage Hero Section */
.hero {
  padding: 4.5rem 0;
  border-bottom: 2px solid var(--border-color);
  background:
    radial-gradient(circle at 10% 20%, var(--primary-light) 0%, transparent 72%),
    linear-gradient(180deg, var(--bg-color) 0%, var(--bg-color) 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 4.5rem;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-tag {
  display: inline-block;
  font-family: var(--font-sans);
  text-transform: uppercase;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: var(--secondary);
  background-color: var(--secondary-light);
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--text-primary);
  margin-bottom: 1.75rem;
  box-shadow: 2px 2px 0 var(--text-primary);
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 3.25rem;
  line-height: 1.1;
  font-weight: 850;
  margin-bottom: 1.5rem;
}

.hero-description {
  font-family: var(--font-sans);
  font-size: 1.15rem;
  line-height: 1.65;
  color: var(--text-secondary);
  margin-bottom: 2.25rem;
  max-width: 58ch;
}

.hero-cta-btn {
  display: inline-block;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--bg-color);
  background-color: var(--text-primary);
  padding: 1rem 2.25rem;
  border: 2px solid var(--text-primary);
  box-shadow: var(--shadow-flat);
  transition: transform var(--transition), box-shadow var(--transition), background-color var(--transition), color var(--transition);
}

.hero-cta-btn:hover {
  transform: translate(-3px, -3px);
  box-shadow: var(--shadow-flat-hover);
  background-color: var(--primary);
  color: #ffffff;
}

/* Homepage Featured Post Card */
.featured-card {
  background: var(--bg-card);
  border: 2px solid var(--text-primary);
  box-shadow: var(--shadow-flat);
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
}

.featured-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: var(--shadow-flat-hover);
}

.featured-card-crest {
  min-height: 170px;
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: 
    repeating-linear-gradient(-45deg, transparent, transparent 15px, rgba(255, 255, 255, 0.06) 15px, rgba(255, 255, 255, 0.06) 30px),
    linear-gradient(135deg, var(--secondary), var(--primary));
  color: #ffffff;
  border-bottom: 2px solid var(--text-primary);
}

.featured-card-crest-label {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  opacity: 0.9;
}

.featured-card-crest-title {
  font-family: var(--font-serif);
  font-size: 1.95rem;
  font-weight: 850;
  line-height: 1.15;
  text-transform: none;
}

.featured-card-body {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.featured-card-meta {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary);
}

.featured-card-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 800;
  line-height: 1.25;
}

.featured-card-title a:hover {
  color: var(--primary);
}

.featured-card-date {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.featured-card-summary {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

@media (max-width: 768px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3.5rem;
  }
  .hero-title {
    font-size: 2.5rem;
  }
}

/* Coverage Overview Block */
.section-header {
  margin-top: 5.5rem;
  margin-bottom: 3rem;
  border-bottom: 2px solid var(--text-primary);
  padding-bottom: 0.75rem;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
}

.section-title {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 2rem;
  position: relative;
}

.section-link {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary);
}

.section-link:hover {
  color: var(--primary-hover);
}

.coverage-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2.5rem;
  margin-bottom: 2rem;
}

.coverage-card {
  background: var(--bg-card);
  border: 2px solid var(--text-primary);
  box-shadow: var(--shadow-flat);
  padding: 2.25rem 2rem;
  transition: transform var(--transition), box-shadow var(--transition);
}

.coverage-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: var(--shadow-flat-hover);
}

.coverage-icon {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 0.85rem;
  color: var(--primary);
  background: var(--primary-light);
  display: inline-block;
  padding: 0.25rem 0.5rem;
  border: 1px solid var(--text-primary);
  margin-bottom: 1.25rem;
}

.linux-ops .coverage-icon {
  color: var(--secondary);
  background: var(--secondary-light);
}

.publishing-ops .coverage-icon {
  color: var(--text-primary);
  background: var(--border-muted);
}

.coverage-card-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 0.75rem;
}

.coverage-card-description {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* Guides Grid & Cards */
.guides-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 3rem;
  margin-bottom: 4rem;
}

.guide-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 2px solid var(--text-primary);
  box-shadow: var(--shadow-flat);
  transition: transform var(--transition), box-shadow var(--transition);
  position: relative;
}

.guide-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: var(--shadow-flat-hover);
}

.guide-card-accent {
  min-height: 120px;
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: 
    repeating-linear-gradient(45deg, transparent, transparent 10px, rgba(18, 20, 23, 0.02) 10px, rgba(18, 20, 23, 0.02) 20px),
    linear-gradient(135deg, var(--secondary-light), var(--primary-light));
  border-bottom: 2px solid var(--text-primary);
  position: relative;
  overflow: hidden;
}

@media (prefers-color-scheme: dark) {
  .guide-card-accent {
    background: 
      repeating-linear-gradient(45deg, transparent, transparent 10px, rgba(255, 255, 255, 0.02) 10px, rgba(255, 255, 255, 0.02) 20px),
      linear-gradient(135deg, var(--secondary-light), var(--primary-light));
  }
}

.guide-card-accent-label {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--secondary);
}

.guide-card-accent-mark {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  align-self: flex-end;
  background: var(--primary);
  border: 2px solid var(--text-primary);
  box-shadow: 2px 2px 0 var(--text-primary);
  position: relative;
}

.guide-card-accent-mark::after {
  content: '>';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 900;
  color: var(--bg-card);
}

.guide-card-content {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.guide-card-meta {
  font-family: var(--font-sans);
  text-transform: uppercase;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.guide-card-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 0.75rem;
}

.guide-card-title a:hover {
  color: var(--primary);
}

.guide-card-summary {
  font-family: var(--font-sans);
  font-size: 0.925rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 1.75rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
}

.guide-card-link {
  margin-top: auto;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  width: fit-content;
}

.guide-card:hover .guide-card-link {
  color: var(--primary-hover);
}

/* Page Intro Header (List and generic pages) */
.page-intro {
  padding: 4.5rem 0 3.5rem;
  border-bottom: 2px solid var(--text-primary);
  margin-bottom: 4.5rem;
  max-width: var(--container-width);
}

.page-intro h1 {
  font-family: var(--font-serif);
  font-size: 3.5rem;
  line-height: 1.05;
  font-weight: 900;
  margin-bottom: 1.25rem;
}

.page-intro p {
  font-family: var(--font-sans);
  font-size: 1.25rem;
  line-height: 1.6;
  color: var(--text-secondary);
  max-width: 60ch;
}

@media (max-width: 680px) {
  .page-intro {
    padding: 3rem 0 2rem;
  }
  .page-intro h1 {
    font-size: 2.5rem;
  }
}

.list-container {
  padding-top: 1rem;
}

/* Single Reading Pages Typography & Elements */
.single-article {
  padding-top: 2rem;
}

.article-header {
  padding: 4rem 0 3rem;
  border-bottom: 2px solid var(--text-primary);
  margin-bottom: 4rem;
  text-align: center;
}

.article-category {
  font-family: var(--font-sans);
  text-transform: uppercase;
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.15em;
  color: var(--primary);
  margin-bottom: 1.25rem;
}

.article-title {
  font-family: var(--font-serif);
  font-size: 3.25rem;
  font-weight: 900;
  line-height: 1.1;
  max-width: 850px;
  margin: 0 auto 1.75rem;
}

@media (max-width: 680px) {
  .article-title {
    font-size: 2.25rem;
  }
}

.article-meta {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-muted);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.75rem;
}

.meta-dot {
  color: var(--primary);
  font-weight: 900;
}

.article-featured-image {
  margin-bottom: 4.5rem;
  border: 2px solid var(--text-primary);
  box-shadow: var(--shadow-flat);
  aspect-ratio: 21 / 9;
  overflow: hidden;
  background-color: var(--border-muted);
}

@media (max-width: 768px) {
  .article-featured-image {
    aspect-ratio: 16 / 9;
  }
}

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

/* Structured Article Reading Body */
.content {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  line-height: 1.75;
  color: var(--text-primary);
}

.content p {
  margin-bottom: 2rem;
  max-width: var(--container-width-narrow);
}

/* Drop Caps for guide single pages only (first paragraph, first letter) */
.type-guides.is-single .content > p:first-of-type::first-letter {
  font-family: var(--font-serif);
  font-size: 4.5rem;
  font-weight: 900;
  float: left;
  line-height: 0.8;
  margin-right: 0.75rem;
  margin-top: 0.2rem;
  color: var(--primary);
}

.content h2, .content h3, .content h4 {
  color: var(--text-primary);
  margin-top: 3.75rem;
  margin-bottom: 1.5rem;
  max-width: var(--container-width-narrow);
}

.content h2 {
  font-size: 2rem;
  border-bottom: 2px solid var(--text-primary);
  padding-bottom: 0.5rem;
  position: relative;
}

.content h2::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 80px;
  height: 4px;
  background-color: var(--primary);
}

.content h3 {
  font-size: 1.5rem;
  margin-top: 2.75rem;
  border-left: 3px solid var(--secondary);
  padding-left: 0.75rem;
}

.content ul, .content ol {
  margin-bottom: 2rem;
  padding-left: 2rem;
  max-width: var(--container-width-narrow);
}

.content li {
  margin-bottom: 0.75rem;
}

/* Modern Accessible Markers */
.content ul li::marker {
  color: var(--primary);
  font-size: 0.9em;
}

.content ol li::marker {
  color: var(--secondary);
  font-weight: 800;
}

.content blockquote {
  border-left: 4px solid var(--primary);
  padding: 1.25rem 2rem;
  margin: 2.75rem 0;
  background-color: var(--primary-light);
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-style: italic;
  max-width: var(--container-width-narrow);
  border-right: 1px solid var(--border-muted);
  box-shadow: inset 2px 0 5px rgba(0,0,0,0.02);
}

.content blockquote p {
  margin-bottom: 0;
}

/* Tech/Terminal Preformatted Code Blocks */
.content pre {
  background-color: #0f1216;      /* Rich dark terminal background */
  color: #e3e8f0;
  padding: 1.5rem 1.75rem;
  overflow-x: auto;
  border: 2px solid var(--text-primary);
  box-shadow: var(--shadow-flat);
  margin: 2.5rem 0;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  position: relative;
}

.content pre::before {
  content: 'Terminal / Configuration Shell';
  display: block;
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  border-bottom: 1px solid #242930;
  padding-bottom: 0.75rem;
  margin-bottom: 1.25rem;
}

.content code {
  font-family: var(--font-mono);
  background-color: rgba(18, 20, 23, 0.05);
  color: var(--primary);
  padding: 0.15rem 0.4rem;
  font-size: 0.9em;
  border: 1px solid rgba(18, 20, 23, 0.08);
}

@media (prefers-color-scheme: dark) {
  .content code {
    background-color: rgba(255, 255, 255, 0.06);
    color: hsl(12, 90%, 65%);
    border: 1px solid rgba(255, 255, 255, 0.1);
  }
}

.content pre code {
  background-color: transparent;
  padding: 0;
  border: none;
  color: inherit;
  font-size: inherit;
}

.content hr {
  border: 0;
  border-top: 2px solid var(--text-primary);
  border-bottom: 1px solid var(--border-muted);
  margin: 4rem 0;
  max-width: var(--container-width-narrow);
}

.content a {
  color: var(--secondary);
  border-bottom: 2px solid var(--secondary);
  font-weight: 700;
  transition: all var(--transition);
}

.content a:hover {
  color: var(--primary);
  border-color: var(--primary);
  background-color: var(--primary-light);
}

/* Reading Navigation (Previous/Next Guide) */
.article-navigation {
  display: flex;
  justify-content: space-between;
  border-top: 2px solid var(--text-primary);
  padding-top: 2.5rem;
  margin-top: 6rem;
  gap: 2rem;
}

.nav-prev, .nav-next {
  flex: 1;
}

.nav-next {
  text-align: right;
}

.article-navigation a {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.25rem;
  border: 2px solid var(--border-muted);
  background: var(--bg-card);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.article-navigation a:hover {
  border-color: var(--text-primary);
  transform: translateY(-2px);
  box-shadow: 3px 3px 0 var(--text-primary);
}

.nav-label {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  font-weight: 800;
}

.nav-title {
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: 1.1rem;
  line-height: 1.3;
  color: var(--text-primary);
}

@media (max-width: 640px) {
  .article-navigation {
    flex-direction: column;
    gap: 1.5rem;
  }
}

/* Contact Grid Layout */
.contact-grid {
  margin-top: 4.5rem;
  margin-bottom: 3rem;
  max-width: var(--container-width-narrow);
}

.contact-details {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
}

.contact-card {
  background: var(--bg-card);
  border: 2px solid var(--text-primary);
  box-shadow: var(--shadow-flat);
  padding: 2.25rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: transform var(--transition), box-shadow var(--transition);
}

.contact-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-flat-hover);
}

.contact-card h3 {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--primary);
}

.contact-card p {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.contact-card a {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-primary);
  border-bottom: 2px solid var(--primary);
  width: fit-content;
  padding-bottom: 0.1rem;
}

.contact-card a:hover {
  color: var(--primary);
  background-color: var(--primary-light);
}

.contact-card span {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* Site Footer */
.site-footer {
  margin-top: 9rem;
  border-top: 4px solid var(--text-primary);
  background-color: var(--bg-color);
  padding-top: 5rem;
  padding-bottom: 4rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.6fr;
  gap: 4.5rem;
  margin-bottom: 4.5rem;
}

.footer-brand h2 {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 1.8rem;
  margin-bottom: 1.25rem;
  text-transform: uppercase;
  letter-spacing: -0.04em;
}

.footer-brand p {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-secondary);
  max-width: 52ch;
}

.footer-nav h3 {
  font-family: var(--font-sans);
  text-transform: uppercase;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.footer-nav ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-nav a {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.footer-nav a:hover {
  color: var(--primary);
}

.footer-bottom {
  border-top: 1px solid var(--border-muted);
  padding-top: 2.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

@media (max-width: 680px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}