/*
Theme Name: Linuxero
Theme URI: https://linuxeros.cl
Author: Comunidad Linuxeros
Author URI: https://linuxeros.cl
Description: Tema oscuro estilo terminal para blog técnico comunitario sobre Linux, IA, sistemas y plataformas.
Version: 1.0.0
License: GPL v2 or later
Text Domain: linuxero
*/

/* ── CSS Custom Properties ── */
:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-card: #1c2128;
  --bg-code: rgba(110, 118, 129, 0.1);
  --text-primary: #c9d1d9;
  --text-secondary: #8b949e;
  --text-muted: #6e7681;
  --accent: #00ff41;
  --accent-dim: rgba(0, 255, 65, 0.15);
  --accent-glow: rgba(0, 255, 65, 0.4);
  --link: #58a6ff;
  --link-hover: #79c0ff;
  --border: #30363d;
  --border-light: #21262d;
  --radius: 8px;
  --radius-lg: 12px;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --max-width: 1100px;
  --transition: 0.2s ease;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a {
  color: var(--link);
  text-decoration: none;
  transition: color var(--transition);
}

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

ul, ol {
  padding-left: 1.5rem;
}

/* ── Typography ── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-mono);
  color: var(--text-primary);
  line-height: 1.3;
  margin-bottom: 1rem;
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.35rem; }
h4 { font-size: 1.1rem; }

p { margin-bottom: 1rem; }

code {
  font-family: var(--font-mono);
  background: var(--bg-code);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  font-size: 0.9em;
  color: var(--accent);
}

pre {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  overflow-x: auto;
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
  line-height: 1.6;
}

pre code {
  background: none;
  padding: 0;
  color: var(--text-primary);
}

blockquote {
  border-left: 3px solid var(--accent);
  padding: 0.75rem 1.25rem;
  margin: 1.5rem 0;
  background: var(--bg-secondary);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--text-secondary);
}

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

/* ── Utility ── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* ── Header ── */
.site-header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  background: rgba(22, 27, 34, 0.92);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.site-branding {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  white-space: nowrap;
}

.site-branding .prompt {
  color: var(--accent);
  margin-right: 0.25rem;
}

.site-branding a {
  color: var(--text-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

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

.site-logo {
  height: 32px;
  width: auto;
}

/* ── Navigation ── */
.main-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.main-nav a {
  color: var(--text-secondary);
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition);
  white-space: nowrap;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--accent);
  background: var(--accent-dim);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-size: 1.5rem;
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius);
  cursor: pointer;
  line-height: 1;
}

.search-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  width: 36px;
  height: 36px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
  margin-left: 0.25rem;
  padding: 0;
}

.search-toggle:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-dim);
}

/* ── Header Search ── */
.header-search {
  display: flex;
  align-items: center;
}

.header-search-form {
  display: flex;
  align-items: center;
}

.search-activator {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.25s ease;
  padding: 0;
}

.search-activator:hover {
  color: var(--text-primary);
  border-color: var(--accent);
  background: var(--accent-dim);
}

.search-form-inline {
  display: flex;
  align-items: center;
  gap: 0;
  height: 38px;
  width: 0;
  opacity: 0;
  overflow: hidden;
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.25s ease;
  position: relative;
  pointer-events: none;
}

.search-form-inline.is-active {
  width: 260px;
  opacity: 1;
  pointer-events: auto;
}

.search-form-inline .search-form-icon {
  position: absolute;
  left: 12px;
  color: var(--text-muted);
  flex-shrink: 0;
  pointer-events: none;
}

.search-field-inline {
  flex: 1;
  height: 100%;
  background: var(--bg-card);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  padding: 0 36px 0 36px;
  outline: none;
  box-shadow: 0 0 0 3px var(--accent-dim);
  transition: all 0.25s ease;
}

.search-field-inline::placeholder {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.search-close {
  position: absolute;
  right: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: 4px;
  padding: 0;
  transition: color 0.2s;
}

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

/* ── Hero Terminal ── */
.hero-terminal {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  margin: 3rem auto 2.5rem;
  max-width: var(--max-width);
  position: relative;
  overflow: hidden;
}

.hero-terminal::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.6;
}

.hero-terminal .terminal-header {
  display: flex;
  gap: 8px;
  margin-bottom: 1.5rem;
}

.hero-terminal .terminal-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.hero-terminal .terminal-dot.red { background: #ff5f56; }
.hero-terminal .terminal-dot.yellow { background: #ffbd2e; }
.hero-terminal .terminal-dot.green { background: #27c93f; }

.hero-terminal .terminal-line {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
  display: flex;
  flex-wrap: wrap;
}

.hero-terminal .terminal-line .prompt {
  color: var(--accent);
  margin-right: 0.75rem;
  white-space: nowrap;
}

.hero-terminal .terminal-line .command {
  color: var(--text-primary);
}

.hero-terminal .terminal-line .output {
  color: var(--text-secondary);
  margin-left: 0;
  width: 100%;
}

.hero-terminal .terminal-cursor {
  display: inline-block;
  width: 10px;
  height: 1.2em;
  background: var(--accent);
  animation: blink 1s step-end infinite;
  vertical-align: text-bottom;
  margin-left: 2px;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.hero-terminal .typing-text {
  overflow: hidden;
  white-space: nowrap;
  border-right: 3px solid var(--accent);
  animation: typing 3.5s steps(40, end), blink-caret 0.75s step-end infinite;
  display: inline-block;
  max-width: 100%;
}

@keyframes typing {
  from { width: 0; }
  to { width: 100%; }
}

@keyframes blink-caret {
  from, to { border-color: transparent; }
  50% { border-color: var(--accent); }
}

/* ── Blog Index (Card Grid) ── */
.page-title {
  font-family: var(--font-mono);
  font-size: 2rem;
  margin: 2.5rem 0 2rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--border);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.page-title .prompt {
  color: var(--accent);
}

.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

/* ── Post Card ── */
.post-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.post-card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 20px var(--accent-dim);
  transform: translateY(-2px);
}

.post-card .card-image {
  aspect-ratio: 16/9;
  background: var(--bg-secondary);
  overflow: hidden;
  position: relative;
}

.post-card .card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.post-card:hover .card-image img {
  transform: scale(1.05);
}

.post-card .card-image .no-image {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  font-family: var(--font-mono);
  font-size: 2.5rem;
  color: var(--accent);
  opacity: 0.3;
}

.post-card .card-body {
  padding: 1.25rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.post-card .card-category {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.post-card .card-title {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.post-card .card-title a {
  color: var(--text-primary);
  text-decoration: none;
}

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

.post-card .card-excerpt {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1rem;
  flex: 1;
}

.post-card .card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-light);
}

.post-card .card-date {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.post-card .card-reading-time {
  font-family: var(--font-mono);
}

/* ── Single Post ── */
.article-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

.article-header {
  margin-bottom: 2.5rem;
}

.article-category {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  margin-bottom: 0.75rem;
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border: 1px solid var(--accent);
  border-radius: 4px;
}

.article-title {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.article-meta {
  display: flex;
  gap: 1.5rem;
  color: var(--text-muted);
  font-size: 0.9rem;
  align-items: center;
  flex-wrap: wrap;
}

.article-meta .meta-item {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

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

.article-tags a {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  background: var(--bg-secondary);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.article-tags a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.article-featured-image {
  margin-bottom: 2.5rem;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
}

.article-featured-image img {
  width: 100%;
}

.article-content {
  font-size: 1.05rem;
}

.article-content h2 {
  margin-top: 2.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-light);
}

.article-content h3 {
  margin-top: 2rem;
}

.article-content ul, .article-content ol {
  margin-bottom: 1.5rem;
}

.article-content li {
  margin-bottom: 0.35rem;
}

.article-content img {
  border-radius: var(--radius);
  margin: 1.5rem 0;
  border: 1px solid var(--border);
}

/* ── Pagination ── */
.pagination {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin: 2rem 0 3rem;
}

.pagination .page-numbers {
  font-family: var(--font-mono);
  padding: 0.5rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-secondary);
  transition: all var(--transition);
  text-decoration: none;
}

.pagination .page-numbers:hover,
.pagination .page-numbers.current {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-dim);
}

/* ── Category Page ── */
.category-header {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin: 2rem auto;
  max-width: var(--max-width);
}

.category-header h1 {
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.category-description {
  color: var(--text-secondary);
  font-size: 1.05rem;
}

/* ── Footer ── */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 2.5rem 0 2rem;
  margin-top: auto;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-brand {
  font-family: var(--font-mono);
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.footer-brand .prompt {
  color: var(--accent);
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.85rem;
  transition: color var(--transition);
}

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

.footer-rss {
  color: var(--accent) !important;
  font-family: var(--font-mono);
}

/* ── 404 ── */
.not-found {
  text-align: center;
  padding: 5rem 1.5rem;
  max-width: 600px;
  margin: 0 auto;
}

.not-found .error-code {
  font-family: var(--font-mono);
  font-size: 6rem;
  color: var(--accent);
  opacity: 0.3;
  line-height: 1;
  margin-bottom: 1rem;
}

.not-found h1 {
  font-size: 1.75rem;
  margin-bottom: 1rem;
}

.not-found p {
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.not-found .btn-home {
  display: inline-block;
  font-family: var(--font-mono);
  color: var(--bg-primary);
  background: var(--accent);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  font-weight: 600;
  transition: all var(--transition);
}

.not-found .btn-home:hover {
  background: #00cc34;
  box-shadow: 0 0 20px var(--accent-glow);
  color: var(--bg-primary);
}

/* ── Responsive ── */
@media (max-width: 768px) {
  html { font-size: 15px; }

  .header-inner {
    height: 56px;
    flex-wrap: wrap;
  }

  .header-search {
    order: 2;
    width: 100%;
    padding: 0.5rem 0 0.65rem;
  }

  .header-search-form {
    width: 100%;
  }

  .search-activator {
    display: none;
  }

  .search-form-inline {
    width: 100% !important;
    opacity: 1 !important;
    pointer-events: auto !important;
    margin-left: 0 !important;
  }

  .main-nav {
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 1rem;
    gap: 0.25rem;
    display: none;
    backdrop-filter: blur(12px);
    background: rgba(22, 27, 34, 0.96);
  }

  .main-nav.is-open { display: flex; }

  .main-nav a {
    display: block;
    width: 100%;
    padding: 0.75rem 1rem;
    text-align: center;
  }

  .nav-toggle { display: block; }

  .hero-terminal {
    padding: 1.5rem 1.25rem;
    margin: 2rem auto 1.5rem;
  }

  .hero-terminal .terminal-line {
    font-size: 0.95rem;
  }

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

  .article-title { font-size: 1.75rem; }

  .article-meta { gap: 1rem; flex-direction: column; align-items: flex-start; }

  .footer-inner { flex-direction: column; text-align: center; }
  .footer-links { justify-content: center; }
}

@media (max-width: 480px) {
  .hero-terminal .typing-text {
    white-space: normal;
    border-right: none;
    animation: none;
  }
}