:root {
  --bg: #0d0f14;
  --surface: #13161d;
  --surface2: #1a1e28;
  --border: #232736;
  --border2: #2e3347;
  --text: #e8eaf0;
  --text2: #8b90a0;
  --text3: #555a6e;
  --accent: #4f7cff;
  --accent-glow: rgba(79, 124, 255, 0.15);
  --green: #3ecf8e;
  --amber: #f0a500;
  --purple: #a78bfa;
  --red: #ff5c5c;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  font-size: 15px;
  min-height: 100vh;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(79, 124, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(79, 124, 255, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

/* NAV */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 15, 20, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  gap: 24px;
}

.nav-logo {
  font-family: 'DM Mono', monospace;
  font-size: 16px;
  font-weight: 500;
  color: var(--text);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 5px;
}

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

.nav-links { display: flex; gap: 24px; list-style: none; }
.nav-links a { color: var(--text2); text-decoration: none; font-size: 14px; transition: color .15s; }
.nav-links a:hover, .nav-links a.active { color: var(--text); }

.nav-right { display: flex; gap: 12px; align-items: center; }

.btn-sm {
  background: var(--accent);
  color: #fff;
  padding: 7px 16px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  transition: background .15s;
}

.btn-sm:hover { background: #6690ff; }

/* CONTAINER */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* TAG */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 20px;
  background: var(--accent-glow);
  border: 1px solid rgba(79, 124, 255, 0.2);
  color: var(--accent);
  font-size: 12px;
  font-family: 'DM Mono', monospace;
}

/* BLOG INDEX */
.blog-hero {
  padding: 80px 0 64px;
  text-align: center;
  border-bottom: 1px solid var(--border);
}

.blog-hero h1 {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 700;
  margin: 16px 0 14px;
  letter-spacing: -0.5px;
}

.blog-hero p { color: var(--text2); font-size: 17px; max-width: 500px; margin: 0 auto; }

/* SEARCH + FILTER */
.blog-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 32px 0 28px;
  flex-wrap: wrap;
}

.search-box {
  flex: 1;
  min-width: 200px;
  position: relative;
}

.search-box input {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border2);
  color: var(--text);
  padding: 10px 12px 10px 38px;
  border-radius: 8px;
  font-family: 'DM Sans', sans-serif;
  font-size: 14px;
  outline: none;
  transition: border-color .2s;
}

.search-box input:focus { border-color: var(--accent); }
.search-box input::placeholder { color: var(--text3); }

.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text3);
  font-size: 14px;
  pointer-events: none;
}

.cat-filters { display: flex; gap: 8px; flex-wrap: wrap; }

.cat-btn {
  padding: 7px 14px;
  border-radius: 20px;
  border: 1px solid var(--border2);
  background: transparent;
  color: var(--text2);
  font-size: 12px;
  font-family: 'DM Mono', monospace;
  cursor: pointer;
  transition: all .15s;
  white-space: nowrap;
}

.cat-btn:hover { border-color: var(--accent); color: var(--accent); }
.cat-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }

/* FEATURED */
.featured-post {
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: 16px;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  margin-bottom: 48px;
  text-decoration: none;
  color: inherit;
  transition: border-color .2s, transform .2s;
}

.featured-post:hover { border-color: var(--accent); transform: translateY(-2px); }

.featured-thumb {
  height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 72px;
  background: linear-gradient(135deg, var(--surface2), var(--bg));
  border-right: 1px solid var(--border);
}

.featured-body {
  padding: 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 12px;
}

.featured-label {
  font-size: 11px;
  font-family: 'DM Mono', monospace;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: .5px;
}

.featured-title {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
}

.featured-excerpt { color: var(--text2); font-size: 14px; line-height: 1.7; }

.featured-meta {
  display: flex;
  gap: 16px;
  font-size: 12px;
  color: var(--text3);
  font-family: 'DM Mono', monospace;
  margin-top: 8px;
}

/* BLOG GRID */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  padding-bottom: 100px;
}

.blog-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  transition: border-color .2s, transform .2s;
}

.blog-card:hover { border-color: var(--accent); transform: translateY(-3px); }

.blog-thumb {
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 52px;
  background: linear-gradient(135deg, var(--surface2), var(--bg));
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.blog-body { padding: 22px; flex: 1; display: flex; flex-direction: column; }

.blog-cat {
  font-size: 11px;
  font-family: 'DM Mono', monospace;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-bottom: 8px;
}

.blog-title {
  font-weight: 600;
  font-size: 16px;
  line-height: 1.4;
  margin-bottom: 10px;
  color: var(--text);
  flex: 1;
}

.blog-excerpt { color: var(--text2); font-size: 13px; line-height: 1.65; margin-bottom: 16px; }

.blog-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  font-size: 11px;
  color: var(--text3);
  font-family: 'DM Mono', monospace;
}

.no-results {
  grid-column: 1 / -1;
  text-align: center;
  padding: 80px 0;
  color: var(--text3);
}

.no-results p { font-size: 15px; margin-top: 8px; }

/* ARTICLE PAGE */
.article-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 48px;
  padding: 60px 0 100px;
  align-items: start;
}

.article-main { min-width: 0; }

.article-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  text-decoration: none;
  font-size: 13px;
  margin-bottom: 36px;
  transition: gap .15s;
}

.article-back:hover { gap: 10px; }

.article-header { margin-bottom: 40px; }

.article-cats { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }

.article-cat {
  padding: 3px 10px;
  border-radius: 20px;
  background: var(--accent-glow);
  border: 1px solid rgba(79, 124, 255, 0.2);
  color: var(--accent);
  font-size: 11px;
  font-family: 'DM Mono', monospace;
}

.article-title {
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: -0.3px;
}

.article-meta-row {
  display: flex;
  align-items: center;
  gap: 20px;
  color: var(--text3);
  font-size: 12px;
  font-family: 'DM Mono', monospace;
}

.article-divider {
  height: 1px;
  background: var(--border);
  margin: 32px 0;
}

/* ARTICLE CONTENT */
.article-content h2 { font-size: 22px; font-weight: 700; margin: 40px 0 14px; color: var(--text); }
.article-content h3 { font-size: 18px; font-weight: 600; margin: 28px 0 10px; color: var(--text); }
.article-content p { color: var(--text2); line-height: 1.85; margin-bottom: 18px; font-size: 15px; }
.article-content strong { color: var(--text); font-weight: 600; }
.article-content em { color: var(--text2); }
.article-content ul, .article-content ol { color: var(--text2); line-height: 1.85; margin: 0 0 18px 22px; font-size: 15px; }
.article-content li { margin-bottom: 6px; }

.article-content blockquote {
  border-left: 3px solid var(--accent);
  padding: 16px 20px;
  background: var(--surface);
  border-radius: 0 8px 8px 0;
  margin: 28px 0;
  color: var(--text);
  font-style: italic;
}

.article-content code {
  background: var(--surface2);
  border: 1px solid var(--border2);
  padding: 2px 7px;
  border-radius: 4px;
  font-family: 'DM Mono', monospace;
  font-size: 13px;
  color: var(--accent);
}

.article-content pre {
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: 8px;
  padding: 20px;
  margin: 24px 0;
  overflow-x: auto;
}

.article-content pre code { background: none; border: none; padding: 0; color: var(--text2); }
.article-content hr { border: none; border-top: 1px solid var(--border); margin: 36px 0; }
.article-content a { color: var(--accent); text-decoration: none; }
.article-content a:hover { text-decoration: underline; }

/* SIDEBAR */
.article-sidebar { position: sticky; top: 80px; }

.sidebar-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 20px;
}

.sidebar-card h4 {
  font-size: 12px;
  font-family: 'DM Mono', monospace;
  color: var(--text3);
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-bottom: 16px;
}

.toc-list { list-style: none; display: flex; flex-direction: column; gap: 8px; }

.toc-list a {
  color: var(--text2);
  text-decoration: none;
  font-size: 13px;
  line-height: 1.4;
  transition: color .15s;
  display: block;
  padding-left: 12px;
  border-left: 2px solid transparent;
}

.toc-list a:hover, .toc-list a.active { color: var(--accent); border-left-color: var(--accent); }

.related-list { display: flex; flex-direction: column; gap: 12px; }

.related-item {
  display: flex;
  gap: 10px;
  text-decoration: none;
  color: inherit;
  padding: 10px;
  border-radius: 8px;
  transition: background .15s;
}

.related-item:hover { background: var(--surface2); }
.related-item .emoji { font-size: 22px; flex-shrink: 0; }

.related-item-body .related-title {
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  line-height: 1.3;
  margin-bottom: 3px;
}

.related-item-body .related-cat { font-size: 11px; color: var(--text3); font-family: 'DM Mono', monospace; }

/* CTA */
.article-cta {
  background: linear-gradient(135deg, var(--surface), var(--surface2));
  border: 1px solid var(--border2);
  border-radius: 14px;
  padding: 40px;
  text-align: center;
  margin-top: 60px;
}

.article-cta h3 { font-size: 22px; font-weight: 700; margin-bottom: 10px; }
.article-cta p { color: var(--text2); font-size: 14px; margin-bottom: 24px; max-width: 400px; margin-left: auto; margin-right: auto; }

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: var(--accent);
  color: #fff;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  transition: all .15s;
}

.btn-primary:hover { background: #6690ff; transform: translateY(-1px); }

/* LOADING */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 100px 0;
  gap: 12px;
  color: var(--text3);
  font-family: 'DM Mono', monospace;
  font-size: 13px;
}

.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid var(--border2);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* FOOTER */
footer {
  border-top: 1px solid var(--border);
  padding: 40px 24px;
  text-align: center;
}

.footer-copy { color: var(--text3); font-size: 12px; font-family: 'DM Mono', monospace; }

/* RESPONSIVE */
@media (max-width: 900px) {
  .featured-post { grid-template-columns: 1fr; }
  .featured-thumb { height: 160px; border-right: none; border-bottom: 1px solid var(--border); }
  .featured-body { padding: 24px; }
  .blog-grid { grid-template-columns: 1fr 1fr; }
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { display: none; }
}

@media (max-width: 600px) {
  .blog-grid { grid-template-columns: 1fr; }
}

/* NEWSLETTER SECTION */
.nl-section { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); margin: 60px 0 0; padding: 60px 24px; }
.nl-section-inner { max-width: 560px; margin: 0 auto; text-align: center; }
.nl-section-icon { font-size: 36px; margin-bottom: 16px; }
.nl-section-inner h2 { font-size: 24px; font-weight: 700; margin-bottom: 12px; }
.nl-section-inner > p { color: var(--text2); font-size: 15px; line-height: 1.7; margin-bottom: 28px; }
.nl-section-row { display: flex; gap: 8px; }
.nl-input { flex: 1; padding: 11px 16px; background: var(--surface2); border: 1px solid var(--border2); border-radius: 8px; color: var(--text); font-size: 14px; outline: none; font-family: inherit; }
.nl-input:focus { border-color: var(--accent); }
.nl-btn { background: var(--accent); color: #fff; border: none; padding: 11px 20px; border-radius: 8px; font-size: 14px; font-weight: 500; cursor: pointer; white-space: nowrap; font-family: inherit; }
.nl-btn:hover { background: #6690ff; }
.nl-btn:disabled { opacity: 0.6; cursor: not-allowed; }
.nl-msg { color: #e05252; font-size: 13px; margin-top: 8px; display: none; }
.nl-fine { color: var(--text3); font-size: 12px; margin-top: 12px; margin-bottom: 0; }
.nl-success { color: var(--green); font-size: 15px; font-weight: 500; padding: 12px 0; }

@media (max-width: 500px) {
  .nl-section-row { flex-direction: column; }
}