@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600;700&family=IBM+Plex+Sans:wght@400;500;600&display=swap');

:root {
  --mono-bg: #1a1a1a;
  --mono-surface: #222222;
  --mono-border: #333333;
  --mono-text: #e8e8e8;
  --mono-text-muted: #888888;
  --mono-accent: #6b8aab;
}

body {
  background: var(--mono-bg);
  color: var(--mono-text);
  font-family: 'IBM Plex Sans', -apple-system, sans-serif;
  margin: 0;
  min-height: 100vh;
}

/* Header / Nav */
header {
  background: var(--mono-bg) !important;
  border-bottom: 1px solid var(--mono-border) !important;
  position: sticky;
  top: 0;
  z-index: 100;
}
header .container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1.5rem;
}
.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 64px;
  padding: 0.5rem 0;
}
.logo-link {
  font-family: 'IBM Plex Mono', monospace !important;
  font-weight: 700 !important;
  font-size: 1.3rem !important;
  text-decoration: none;
  color: var(--mono-text) !important;
  letter-spacing: -0.02em;
}
.logo-link:hover {
  color: var(--mono-accent) !important;
}
.main-nav {
  display: flex;
  align-items: center;
}
.nav-links {
  display: flex;
  list-style: none;
  gap: 0;
  margin: 0;
  padding: 0;
}
.nav-links li {
  margin: 0;
}
.nav-links a {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--mono-text-muted) !important;
  font-family: 'IBM Plex Mono', monospace !important;
  font-weight: 500;
  font-size: 0.82rem;
  padding: 0.5rem 0.9rem;
  text-decoration: none;
  transition: color 0.2s;
  letter-spacing: -0.01em;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--mono-accent) !important;
}
.nav-links a i {
  font-size: 0.78rem;
  color: var(--mono-text-muted);
}
.menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--mono-border);
  cursor: pointer;
  padding: 0.5rem 0.6rem;
  border-radius: 4px;
}
.bar {
  display: block;
  width: 20px;
  height: 2px;
  margin: 4px 0;
  background: var(--mono-text);
  transition: all 0.3s;
}
@media (max-width: 900px) {
  .menu-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--mono-bg);
    border-bottom: 1px solid var(--mono-border);
    padding: 0.5rem 1.5rem;
    z-index: 99;
  }
  .nav-links.active { display: flex; }
  .nav-links a { width: 100%; padding: 0.7rem 0; }
  .menu-toggle.active .bar:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .menu-toggle.active .bar:nth-child(2) { opacity: 0; }
  .menu-toggle.active .bar:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
}

/* Footer */
footer {
  background: var(--mono-bg) !important;
  border-top: 1px solid var(--mono-border) !important;
  color: var(--mono-text-muted);
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 0.85rem;
  margin-top: 4rem;
}
footer .container {
  max-width: 960px;
  margin: 0 auto;
}
footer a {
  color: var(--mono-accent) !important;
  text-decoration: none;
}
footer a:hover {
  text-decoration: underline;
}
.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 2rem;
  padding: 2.5rem 1.5rem;
}
.footer-logo .logo-link {
  font-size: 1.1rem !important;
}
.footer-logo p {
  color: var(--mono-text-muted);
  margin: 0.5rem 0 0;
  font-size: 0.85rem;
  line-height: 1.5;
}
.footer-links h3,
.footer-social h3 {
  color: var(--mono-text);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0 0 0.8rem;
}
.footer-links ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-links li {
  margin-bottom: 0.4rem;
}
.footer-links a {
  font-size: 0.85rem;
}
.social-icons {
  display: flex;
  gap: 1rem;
}
.social-icons a {
  color: var(--mono-text-muted) !important;
  font-size: 1.1rem;
  transition: color 0.2s;
}
.social-icons a:hover {
  color: var(--mono-accent) !important;
}
.footer-bottom {
  border-top: 1px solid var(--mono-border);
  padding: 1.2rem 1.5rem;
  text-align: center;
  font-size: 0.8rem;
}
.footer-bottom p {
  margin: 0.2rem 0;
}

/* Mono Container */
.mono-container {
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

/* Hero */
.mono-hero-section {
  text-align: center;
  padding: 3rem 0 2rem;
  border-bottom: 1px solid var(--mono-border);
  margin-bottom: 3rem;
}
.mono-site-title {
  font-family: 'IBM Plex Mono', monospace;
  font-weight: 700;
  font-size: clamp(2rem, 5vw, 3.5rem);
  letter-spacing: -0.03em;
  margin: 0 0 0.5rem;
  color: var(--mono-text);
}
.mono-site-desc {
  color: var(--mono-text-muted);
  font-size: 1rem;
  margin: 0;
}

/* Featured */
.mono-featured {
  display: block;
  text-decoration: none;
  color: inherit;
  border: 1px solid var(--mono-border);
  margin-bottom: 3rem;
  transition: border-color 0.3s;
}
.mono-featured:hover {
  border-color: var(--mono-accent);
}
.mono-featured-img img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  display: block;
}
.mono-featured-body {
  padding: 1.5rem;
}
.mono-featured-title {
  font-family: 'IBM Plex Mono', monospace;
  font-weight: 600;
  font-size: clamp(1.4rem, 3vw, 2rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0.6rem 0 0.8rem;
  color: var(--mono-text);
}

/* Chips */
.mono-chip {
  display: inline-block;
  padding: 0.2rem 0.7rem;
  border: 1px solid var(--mono-border);
  color: var(--mono-text-muted);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.mono-meta {
  font-size: 0.82rem;
  color: var(--mono-text-muted);
  font-family: 'IBM Plex Mono', monospace;
}

/* Section title */
.mono-section-title {
  font-family: 'IBM Plex Mono', monospace;
  font-weight: 600;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--mono-text-muted);
  margin: 0 0 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--mono-border);
}

/* Grid */
.mono-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-bottom: 3rem;
}
.mono-card {
  display: block;
  text-decoration: none;
  color: inherit;
  border: 1px solid var(--mono-border);
  transition: border-color 0.3s;
}
.mono-card:hover {
  border-color: var(--mono-accent);
}
.mono-card-img {
  overflow: hidden;
}
.mono-card-img img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
  filter: grayscale(30%);
  transition: filter 0.3s;
}
.mono-card:hover .mono-card-img img {
  filter: grayscale(0%);
}
.mono-card-body {
  padding: 1rem 1.2rem 1.2rem;
}
.mono-card-title {
  font-family: 'IBM Plex Mono', monospace;
  font-weight: 600;
  font-size: 1rem;
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin: 0.5rem 0 0.5rem;
  color: var(--mono-text);
}

/* Categories */
.mono-categories {
  margin-top: 2rem;
}
.mono-cat-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.mono-cat-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border: 1px solid var(--mono-border);
  text-decoration: none;
  color: var(--mono-text-muted);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.82rem;
  font-weight: 500;
  transition: all 0.2s;
}
.mono-cat-link:hover {
  border-color: var(--mono-accent);
  color: var(--mono-accent);
}
.mono-cat-link i {
  font-size: 0.8rem;
}

/* Breadcrumb */
.mono-breadcrumb {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2rem;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.82rem;
  color: var(--mono-text-muted);
}
.mono-breadcrumb a {
  color: var(--mono-accent);
  text-decoration: none;
}
.mono-breadcrumb a:hover {
  text-decoration: underline;
}

/* Post page */
.mono-post-wrap {
  max-width: 680px;
}
.mono-article {
  margin-bottom: 3rem;
}
.mono-post-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--mono-border);
}
.mono-post-title {
  font-family: 'IBM Plex Mono', monospace;
  font-weight: 700;
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin: 0.8rem 0 1rem;
  color: var(--mono-text);
}
.mono-post-img {
  margin-bottom: 2rem;
}
.mono-post-img img {
  width: 100%;
  display: block;
}
.mono-post-body {
  font-size: 1.05rem;
  line-height: 1.8;
  color: #cccccc;
}
.mono-post-body p {
  margin-bottom: 1.2rem;
}
.mono-post-body h2 {
  font-family: 'IBM Plex Mono', monospace;
  font-weight: 600;
  font-size: 1.3rem;
  color: var(--mono-text);
  margin: 2.5rem 0 1rem;
  letter-spacing: -0.01em;
}
.mono-post-body h3 {
  font-family: 'IBM Plex Mono', monospace;
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--mono-text);
  margin: 2rem 0 0.8rem;
}
.mono-post-body a {
  color: var(--mono-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.mono-post-body blockquote {
  border-left: 2px solid var(--mono-border);
  padding: 0.8rem 1.2rem;
  margin: 1.5rem 0;
  color: var(--mono-text-muted);
  font-style: italic;
}
.mono-post-body strong {
  font-weight: 600;
  color: var(--mono-text);
}

/* Category page */
.mono-cat-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--mono-border);
}
.mono-cat-title {
  font-family: 'IBM Plex Mono', monospace;
  font-weight: 700;
  font-size: 2rem;
  letter-spacing: -0.03em;
  margin: 0 0 0.5rem;
  color: var(--mono-text);
}

/* Related */
.mono-related {
  border-top: 1px solid var(--mono-border);
  padding-top: 2rem;
}

/* Empty */
.mono-empty {
  text-align: center;
  padding: 3rem;
  color: var(--mono-text-muted);
  font-family: 'IBM Plex Mono', monospace;
}

/* Responsive */
@media (max-width: 700px) {
  .mono-grid {
    grid-template-columns: 1fr;
  }
  .mono-featured-img img {
    height: 250px;
  }
  .mono-container {
    padding: 1.5rem 1rem 3rem;
  }
}