/* CSS Design System for Debian-News.net */
:root {
  /* Color Palette - Premium Technical Editorial Theme */
  --bg-base: hsl(220, 20%, 6%);
  --bg-surface: hsl(220, 18%, 10%);
  --bg-card: hsl(220, 15%, 13%);
  --border-color: hsl(220, 12%, 18%);
  --border-focus: hsl(347, 85%, 44%);
  
  --text-primary: hsl(220, 10%, 88%);
  --text-secondary: hsl(220, 8%, 68%);
  --text-muted: hsl(220, 6%, 50%);
  --text-highlight: hsl(0, 0%, 100%);
  
  /* Debian Crimson Brand Palette */
  --color-brand: hsl(347, 85%, 44%);
  --color-brand-hover: hsl(347, 95%, 52%);
  --color-brand-bg: hsl(347, 85%, 10%);
  
  /* Functional Status Colors */
  --color-success: hsl(150, 75%, 40%);
  --color-success-bg: hsl(150, 75%, 8%);
  --color-info: hsl(195, 80%, 42%);
  --color-info-bg: hsl(195, 80%, 8%);
  --color-warning: hsl(38, 90%, 48%);
  --color-warning-bg: hsl(38, 90%, 8%);
  
  /* Typography Stacks (No remote downloads) */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  
  /* Layout Constants */
  --max-width: 1160px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 10px;
  --transition-smooth: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--bg-base);
  color: var(--text-primary);
}

body {
  font-family: var(--font-sans);
  line-height: 1.625;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: 2.5rem 1.5rem;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at top, hsl(220, 20%, 11%) 0%, var(--bg-base) 70%);
}

/* Accessibility: Skip Link & Focus States */
.skip-link {
  position: absolute;
  top: -100px;
  left: 20px;
  background-color: var(--color-brand);
  color: var(--text-highlight);
  font-family: var(--font-sans);
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  z-index: 999;
  text-decoration: none;
  transition: top var(--transition-smooth);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
  border: 1px solid var(--border-focus);
}

.skip-link:focus {
  top: 20px;
  outline: none;
}

a:focus-visible, 
button:focus-visible,
[tabindex="-1"]:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 4px;
}

/* Main Container Box */
.bulletin-container {
  width: 100%;
  max-width: var(--max-width);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.45);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* Header Masthead */
.bulletin-header {
  background-color: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  padding: 1.75rem 2.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.debian-logo {
  flex-shrink: 0;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
  transition: transform 0.4s ease;
}

.header-brand:hover .debian-logo {
  transform: rotate(360deg);
}

.header-titles {
  display: flex;
  flex-direction: column;
}

.site-title {
  font-size: 1.85rem;
  font-weight: 850;
  letter-spacing: -0.03em;
  line-height: 1.1;
  text-transform: tracking-tight;
}

.site-title a {
  color: var(--text-highlight);
  text-decoration: none;
  background: linear-gradient(135deg, var(--text-highlight) 60%, var(--color-brand) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.site-tagline {
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-weight: 500;
  letter-spacing: 0.02em;
  margin-top: 0.25rem;
}

.header-status {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--color-success-bg);
  border: 1px solid var(--color-success);
  color: var(--color-success);
  padding: 0.25rem 0.65rem;
  border-radius: 50px;
  font-weight: 600;
}

.status-dot {
  width: 7px;
  height: 7px;
  background-color: var(--color-success);
  border-radius: 50%;
  box-shadow: 0 0 6px var(--color-success);
  animation: pulse-active 2s infinite ease-in-out;
}

@keyframes pulse-active {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

.header-date {
  color: var(--text-muted);
  font-weight: 500;
}

/* Navigation System */
.bulletin-nav-bar {
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  padding: 0.5rem 2.25rem;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 2.25rem;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.75rem 0;
  display: inline-block;
  position: relative;
  transition: color var(--transition-smooth);
}

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

.nav-links a:hover {
  color: var(--text-highlight);
}

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

.nav-links a.active {
  color: var(--text-highlight);
}

.nav-links a.active::after {
  transform: scaleX(1);
}

/* Page Layout & Grid */
.bulletin-body {
  padding: 2.5rem 2.25rem;
  flex: 1;
}

.homepage-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 2.5rem;
  align-items: start;
}

/* Content Column */
.editorial-newsroom {
  grid-column: span 8;
  display: flex;
  flex-direction: column;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  margin-bottom: 1.5rem;
}

.tag-editorial {
  background-color: var(--color-brand-bg);
  color: var(--color-brand-hover);
  border: 1px solid var(--color-brand);
  padding: 0.2rem 0.65rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  letter-spacing: 0.05em;
}

.meta-date {
  color: var(--text-muted);
}

/* Typography styles inside body */
.article-body h1 {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 850;
  line-height: 1.15;
  color: var(--text-highlight);
  margin-bottom: 1.75rem;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 1rem;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.article-body p, 
.page-content p {
  font-size: 1.0625rem;
  line-height: 1.68;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  text-wrap: pretty;
}

.article-body h3, 
.page-content h3 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-highlight);
  margin-top: 2.25rem;
  margin-bottom: 1rem;
  border-left: 3px solid var(--color-brand);
  padding-left: 0.75rem;
  letter-spacing: -0.01em;
}

.article-body ul, 
.page-content ul {
  margin-left: 1.25rem;
  margin-bottom: 1.75rem;
  list-style-type: none;
}

.article-body li, 
.page-content li {
  margin-bottom: 0.75rem;
  font-size: 1.025rem;
  position: relative;
  padding-left: 1.25rem;
  text-wrap: pretty;
}

.article-body li::before, 
.page-content li::before {
  content: "■";
  position: absolute;
  left: 0;
  color: var(--color-brand);
  font-size: 0.75rem;
  top: 0.2rem;
}

/* Sidebar Styling */
.briefing-sidebar {
  grid-column: span 4;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.briefing-box, 
.advisories-box {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

.box-header {
  background-color: hsl(220, 15%, 15%);
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-highlight);
  border-left: 3px solid var(--color-brand);
}

.box-body {
  padding: 1.25rem;
}

.stat-line {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.6rem 0;
  border-bottom: 1px dashed var(--border-color);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.stat-line:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.stat-label {
  color: var(--text-secondary);
}

.stat-val {
  color: var(--text-primary);
  font-weight: 600;
}

.val-highlight {
  color: var(--text-highlight);
}

.val-crimson {
  color: var(--color-brand-hover);
}

.val-cyan {
  color: var(--color-info);
}

.val-green {
  color: var(--color-success);
}

/* Security Advisories List Widget */
.advisory-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.advisory-list li {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.75rem;
}

.advisory-list li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.advisory-id {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-brand-hover);
  background-color: var(--color-brand-bg);
  border: 1px solid var(--color-brand);
  padding: 0.1rem 0.5rem;
  border-radius: var(--radius-sm);
  align-self: flex-start;
}

.advisory-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* Single Page Structure (About, Contact) */
.single-page {
  max-width: 800px;
  margin: 0 auto;
}

.page-header {
  margin-bottom: 2.25rem;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 1.25rem;
}

.tag-system {
  background-color: var(--color-brand-bg);
  color: var(--color-brand-hover);
  border: 1px solid var(--color-brand);
  padding: 0.2rem 0.65rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  display: inline-block;
  margin-bottom: 0.75rem;
}

.page-title {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 850;
  color: var(--text-highlight);
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.page-content p a {
  color: var(--color-brand-hover);
  text-decoration: none;
  border-bottom: 1px dashed var(--color-brand);
  transition: all var(--transition-smooth);
}

.page-content p a:hover {
  color: var(--text-highlight);
  border-bottom-style: solid;
}

/* JSON Data Card in Contact */
.contact-card-bulletin {
  margin-top: 3rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.contact-card-bulletin .card-bar {
  background-color: hsl(220, 15%, 15%);
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
  border-left: 3px solid var(--color-brand);
}

.card-filename {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 600;
}

.contact-card-bulletin .card-body {
  padding: 1.5rem;
  overflow-x: auto;
  background-color: hsl(220, 20%, 8%);
}

.contact-card-bulletin pre {
  margin: 0;
}

.contact-card-bulletin code {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.55;
}

.json-key {
  color: var(--color-info);
}

.json-val {
  color: var(--color-warning);
}

/* Fallback List View */
.list-page {
  max-width: 800px;
  margin: 0 auto;
}

.bulletin-list {
  list-style: none;
  margin-top: 1.5rem;
  margin-left: 0;
}

.bulletin-list li {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1rem 0;
  border-bottom: 1px dashed var(--border-color);
  position: relative;
  padding-left: 1.5rem;
}

.bulletin-list li::before {
  content: "■";
  position: absolute;
  left: 0;
  color: var(--color-brand);
  font-size: 0.75rem;
}

.bulletin-date {
  font-family: var(--font-mono);
  color: var(--text-muted);
  font-size: 0.9rem;
}

.bulletin-list li a {
  font-size: 1.1rem;
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition-smooth);
}

.bulletin-list li a:hover {
  color: var(--color-brand-hover);
}

/* Footer Styling */
.bulletin-footer {
  background-color: var(--bg-card);
  border-top: 1px solid var(--border-color);
  padding: 2rem 2.25rem;
  font-size: 0.825rem;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.footer-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.footer-accent-line {
  width: 15px;
  height: 3px;
  background-color: var(--color-brand);
  display: inline-block;
}

.footer-status-info {
  font-family: var(--font-mono);
  color: var(--text-highlight);
  font-weight: 600;
}

.copyright {
  color: var(--text-muted);
  line-height: 1.5;
}

/* Custom Styled Scrollbar */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-base);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-card);
  border: 2px solid var(--bg-base);
  border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--border-color);
}

/* Responsive Media Queries */
@media (max-width: 900px) {
  .homepage-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .editorial-newsroom {
    grid-column: span 12;
  }
  
  .briefing-sidebar {
    grid-column: span 12;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }
}

@media (max-width: 600px) {
  body {
    padding: 1rem 0.5rem;
  }
  
  .bulletin-container {
    border-radius: var(--radius-md);
  }
  
  .bulletin-header {
    padding: 1.25rem 1.5rem;
    flex-direction: column;
    align-items: flex-start;
  }
  
  .header-status {
    align-items: flex-start;
  }
  
  .bulletin-nav-bar {
    padding: 0.25rem 1.5rem;
  }
  
  .nav-links {
    gap: 1.25rem;
    flex-wrap: wrap;
  }
  
  .nav-links a {
    padding: 0.5rem 0;
  }
  
  .bulletin-body {
    padding: 1.75rem 1.5rem;
  }
  
  .briefing-sidebar {
    grid-template-columns: 1fr;
  }
  
  .article-body h1, 
  .page-title {
    font-size: 1.85rem;
  }
  
  .bulletin-list li {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
  }
  
  .bulletin-footer {
    padding: 1.5rem;
  }
}