/* ============================================
   Debian MicroNews - Design System
   Inspirado en GitHub Dark, Catppuccin Mocha
   ============================================ */

/* --- Variables --- */
:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --bg-hover: #1c2128;
  --text-primary: #f0f6fc;
  --text-secondary: #8b949e;
  --text-tertiary: #6e7681;
  --accent: #58a6ff;
  --accent-hover: #79c0ff;
  --accent-muted: rgba(88, 166, 255, 0.12);
  --success: #3fb950;
  --warning: #d29922;
  --error: #f85149;
  --border: #30363d;
  --border-light: #21262d;
  --radius-sm: 6px;
  --radius: 12px;
  --radius-lg: 16px;
  --font-sans: 'Inter', 'Noto Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  --font-code: 'Fira Code', 'JetBrains Mono', monospace;
  --max-w: 760px;
  --max-w-wide: 960px;
  --header-h: 60px;
  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
  font-size: 16px;
}

/* --- Focus --- */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* --- Links --- */
a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}

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

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

/* --- Container --- */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 20px;
  width: 100%;
}

/* ============================================
   HEADER
   ============================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 17, 23, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  height: var(--header-h);
  display: flex;
  align-items: center;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.logo {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.logo:hover {
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 24px;
  align-items: center;
}

.nav-links a {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 4px 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--transition);
  border-radius: 2px;
}

.nav-links a:hover::after,
.nav-links a[aria-current="page"]::after {
  width: 100%;
}

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

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 5px;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ============================================
   HERO
   ============================================ */

.hero {
  text-align: center;
  padding: 64px 0 40px;
}

.hero h1 {
  font-size: clamp(1.6rem, 4.5vw, 2.4rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.hero .subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto;
}

.categories-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-top: 24px;
}

.category-pill {
  display: inline-block;
  padding: 5px 14px;
  border-radius: 20px;
  background: var(--accent-muted);
  color: var(--accent);
  border: 1px solid rgba(88, 166, 255, 0.15);
  font-size: 0.8rem;
  font-weight: 500;
  transition: all var(--transition);
}

.category-pill:hover {
  background: rgba(88, 166, 255, 0.2);
  color: var(--accent-hover);
}

.category-hero {
  padding: 40px 0 32px;
}

.category-hero h1 {
  text-transform: capitalize;
}

/* ============================================
   CATEGORY BADGE
   ============================================ */

.category-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 4px;
  background: var(--accent-muted);
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 8px;
}

/* ============================================
   POST CARDS (Index)
   ============================================ */

.post-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-bottom: 48px;
}

.post-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--transition);
}

.post-card:hover {
  border-color: var(--text-tertiary);
  transform: translateY(-1px);
}

.card-cover {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-bottom: 1px solid var(--border);
}

.card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.card-body time {
  font-size: 0.78rem;
  color: var(--text-tertiary);
  font-family: var(--font-mono);
}

.card-body h2 {
  font-size: 1.15rem;
  font-weight: 600;
  line-height: 1.4;
}

.card-body h2 a {
  color: var(--text-primary);
}

.card-body h2 a:hover {
  color: var(--accent);
}

.card-summary {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.card-footer {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 0.8rem;
  color: var(--text-tertiary);
}

.card-author {
  color: var(--text-secondary);
}

.card-reading {
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.read-more {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent);
  margin-top: 4px;
}

.read-more:hover {
  gap: 8px;
}

/* ============================================
   POST FULL PAGE
   ============================================ */

.post-page {
  padding: 40px 0 48px;
}

.post-cover {
  width: 100%;
  max-height: 420px;
  object-fit: cover;
  border-radius: var(--radius);
  margin-bottom: 32px;
  border: 1px solid var(--border);
}

.post-header {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.post-header h1 {
  font-size: clamp(1.4rem, 3.5vw, 2rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin: 8px 0 16px;
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.post-meta time {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-tertiary);
}

.meta-author {
  font-weight: 500;
}

.meta-reading {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-tertiary);
}

/* --- Post Content --- */
.post-content {
  font-size: 1rem;
  line-height: 1.85;
}

.post-content h2 {
  font-size: 1.35rem;
  font-weight: 600;
  margin: 36px 0 14px;
  letter-spacing: -0.015em;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-light);
}

.post-content h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 28px 0 10px;
}

.post-content p {
  margin-bottom: 18px;
}

.post-content p:last-child {
  margin-bottom: 0;
}

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

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

.post-content strong {
  font-weight: 600;
  color: #f0f6fc;
}

.post-content ul,
.post-content ol {
  margin: 0 0 18px 22px;
}

.post-content li {
  margin-bottom: 6px;
}

.post-content li:last-child {
  margin-bottom: 0;
}

.post-content blockquote {
  margin: 22px 0;
  padding: 16px 22px;
  border-left: 3px solid var(--accent);
  background: rgba(88, 166, 255, 0.05);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-secondary);
  font-style: italic;
}

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

.post-content hr {
  border: none;
  height: 1px;
  background: var(--border);
  margin: 32px 0;
}

/* --- Code --- */
.post-content pre {
  margin: 22px 0;
  padding: 18px 22px;
  background: #0d1117;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  overflow-x: auto;
  font-size: 0.84rem;
  line-height: 1.65;
  font-family: var(--font-code);
}

.post-content code {
  font-family: var(--font-code);
  font-size: 0.87em;
}

.post-content :not(pre) > code {
  background: rgba(88, 166, 255, 0.1);
  color: var(--accent);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.84em;
  border: 1px solid rgba(88, 166, 255, 0.1);
}

/* --- Tables --- */
.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 22px 0;
  font-size: 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.post-content thead {
  background: var(--bg-tertiary);
}

.post-content th,
.post-content td {
  padding: 10px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.post-content th {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.post-content tr:last-child td {
  border-bottom: none;
}

.post-content tr:hover {
  background: var(--bg-hover);
}

/* --- Images & Video --- */
.post-content img {
  margin: 22px 0;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.post-content video {
  max-width: 100%;
  border-radius: var(--radius-sm);
  margin: 22px 0;
}

/* --- Checklists --- */
.post-content input[type="checkbox"] {
  margin-right: 8px;
  accent-color: var(--accent);
}

/* --- Details --- */
.post-content details {
  margin: 22px 0;
  padding: 16px 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.post-content summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--accent);
}

/* --- Footnotes --- */
.post-content .footnotes {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
}

.post-content .footnotes ol {
  margin-left: 16px;
}

/* --- Tags --- */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: 20px;
  background: rgba(139, 148, 158, 0.08);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.tag:hover {
  background: var(--accent-muted);
  color: var(--accent);
  border-color: rgba(88, 166, 255, 0.2);
}

/* ============================================
   POST SHARE
   ============================================ */

.post-footer {
  margin-top: 48px;
}

.post-share {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 16px 0;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.share-btn {
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 500;
  transition: all var(--transition);
}

.share-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.copy-link {
  font-size: 0.9rem;
}

/* ============================================
   RELATED POSTS
   ============================================ */

.related-posts {
  margin: 32px 0;
}

.related-posts h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}

.related-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.related-card:hover {
  border-color: var(--text-tertiary);
}

.related-card img {
  width: 100%;
  height: 120px;
  object-fit: cover;
  border-radius: 4px;
}

.related-card h4 {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.4;
}

/* ============================================
   POST NAV
   ============================================ */

.post-nav {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 24px 0;
  border-top: 1px solid var(--border);
  margin-top: 32px;
}

.post-nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  transition: all var(--transition);
  max-width: 45%;
}

.post-nav a:hover {
  color: var(--accent);
  border-color: rgba(88, 166, 255, 0.3);
}

/* ============================================
   SEARCH PAGE
   ============================================ */

.search-page {
  padding: 40px 0 48px;
}

.search-page h1 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 24px;
}

.search-box {
  position: relative;
  margin-bottom: 32px;
}

.search-box input {
  width: 100%;
  padding: 12px 16px 12px 44px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: var(--font-sans);
  transition: border-color var(--transition);
}

.search-box input:focus {
  border-color: var(--accent);
  outline: none;
}

.search-box input::placeholder {
  color: var(--text-tertiary);
}

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-tertiary);
  font-size: 1.1rem;
}

.search-hint {
  color: var(--text-tertiary);
  text-align: center;
  padding: 32px 0;
}

.search-result {
  padding: 16px 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
  transition: all var(--transition);
}

.search-result:hover {
  border-color: var(--text-tertiary);
}

.search-result a {
  color: var(--text-primary);
  font-weight: 500;
  font-size: 1rem;
}

.search-result a:hover {
  color: var(--accent);
}

.search-result .result-meta {
  font-size: 0.78rem;
  color: var(--text-tertiary);
  margin-top: 4px;
}

.search-result .result-excerpt {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 6px;
}

.search-result mark {
  background: rgba(210, 153, 34, 0.2);
  color: var(--warning);
  border-radius: 2px;
  padding: 0 2px;
}

/* ============================================
   PWA UPDATE BANNER
   ============================================ */

.update-banner {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 24px;
  background: var(--bg-secondary);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
  from { transform: translateX(-50%) translateY(20px); opacity: 0; }
  to { transform: translateX(-50%) translateY(0); opacity: 1; }
}

.update-banner p {
  font-size: 0.9rem;
  color: var(--text-primary);
}

.update-btn {
  padding: 8px 18px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition);
}

.update-btn:hover {
  background: var(--accent-hover);
}

.update-close {
  background: none;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  font-size: 1.2rem;
  padding: 4px;
}

/* ============================================
   404 / ERROR
   ============================================ */

.error-page {
  text-align: center;
  padding: 120px 20px;
}

.error-page h1 {
  font-size: 4rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 8px;
}

.error-page p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.btn-primary {
  display: inline-block;
  padding: 10px 24px;
  background: var(--accent);
  color: white;
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 0.9rem;
  border: none;
  cursor: pointer;
  transition: background var(--transition);
}

.btn-primary:hover {
  background: var(--accent-hover);
  color: white;
}

/* ============================================
   FOOTER
   ============================================ */

.site-footer {
  padding: 24px 0;
  border-top: 1px solid var(--border);
  text-align: center;
  background: var(--bg-primary);
}

.site-footer p {
  font-size: 0.8rem;
  color: var(--text-tertiary);
}

/* ============================================
   SCROLLBAR
   ============================================ */

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-tertiary);
}

/* ============================================
   SELECTION
   ============================================ */

::selection {
  background: rgba(88, 166, 255, 0.25);
  color: white;
}

/* ============================================
   HIGHLIGHT.JS - GitHub Dark theme
   ============================================ */

.hljs { color: #e6edf3; background: transparent; }
.hljs-keyword { color: #ff7b72; }
.hljs-string { color: #a5d6ff; }
.hljs-number { color: #79c0ff; }
.hljs-comment { color: #8b949e; font-style: italic; }
.hljs-function { color: #d2a8ff; }
.hljs-built_in { color: #ffa657; }
.hljs-type { color: #ffa657; }
.hljs-literal { color: #79c0ff; }
.hljs-attr { color: #79c0ff; }
.hljs-title { color: #d2a8ff; }
.hljs-property { color: #79c0ff; }
.hljs-params { color: #e6edf3; }
.hljs-regexp { color: #a5d6ff; }
.hljs-symbol { color: #ffa657; }
.hljs-variable { color: #ffa657; }
.hljs-template-variable { color: #ffa657; }
.hljs-addition { color: #3fb950; }
.hljs-deletion { color: #f85149; }
.hljs-emphasis { font-style: italic; }
.hljs-strong { font-weight: bold; }

/* ============================================
   ANIMATION
   ============================================ */

.fade-in {
  animation: fadeIn 0.4s ease-out;
}

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

/* ============================================
   RESPONSIVE
   ============================================ */

/* Tablet */
@media (min-width: 600px) {
  .container {
    padding: 0 28px;
  }

  .post-card {
    flex-direction: row;
  }

  .card-cover {
    width: 240px;
    height: auto;
    min-height: 180px;
    border-bottom: none;
    border-right: 1px solid var(--border);
  }

  .card-body {
    flex: 1;
  }

  .hero {
    padding: 80px 0 48px;
  }
}

/* Desktop */
@media (min-width: 1024px) {
  .container {
    max-width: var(--max-w-wide);
  }

  .post-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .post-card {
    flex-direction: column;
  }

  .card-cover {
    width: 100%;
    height: 200px;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
}

/* Large Desktop */
@media (min-width: 1400px) {
  .post-list {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Mobile */
@media (max-width: 480px) {
  .container {
    padding: 0 14px;
  }

  .nav-links {
    gap: 14px;
  }

  .nav-links a {
    font-size: 0.8rem;
  }

  .hero {
    padding: 40px 0 28px;
  }

  .hero h1 {
    font-size: 1.3rem;
  }

  .card-body {
    padding: 16px;
  }

  .card-body h2 {
    font-size: 1rem;
  }

  .post-header h1 {
    font-size: 1.2rem;
  }

  .post-content {
    font-size: 0.95rem;
  }

  .post-content pre {
    padding: 14px 16px;
    font-size: 0.78rem;
  }

  .post-nav {
    flex-direction: column;
  }

  .post-nav a {
    max-width: 100%;
  }

  .post-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .related-grid {
    grid-template-columns: 1fr;
  }

  .update-banner {
    width: calc(100% - 28px);
    flex-wrap: wrap;
    justify-content: center;
    text-align: center;
  }
}

/* Smart TV / Ultrawide */
@media (min-width: 2000px) {
  .post-list {
    grid-template-columns: repeat(4, 1fr);
  }

  .hero h1 {
    font-size: 3rem;
  }
}