:root {
  --black: #020409;
  --navy: #050d1a;
  --panel: rgba(5, 13, 26, 0.82);
  --glass: rgba(255, 255, 255, 0.045);
  --border: rgba(255, 255, 255, 0.09);
  --border-blue: rgba(59, 130, 246, 0.28);
  --blue: #2563eb;
  --blue-bright: #3b82f6;
  --blue-glow: #60a5fa;
  --text: #f8fafc;
  --muted: #94a3b8;
  --dim: #64748b;
  --mono: "JetBrains Mono", monospace;
  --display: "Space Grotesk", sans-serif;
  --body: Inter, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(ellipse 70% 45% at 50% -12%, rgba(37, 99, 235, 0.2), transparent 72%),
    linear-gradient(rgba(59, 130, 246, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 130, 246, 0.035) 1px, transparent 1px),
    var(--black);
  background-size: auto, 64px 64px, 64px 64px, auto;
  color: var(--text);
  font-family: var(--body);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0 clamp(1rem, 4vw, 4rem);
  border-bottom: 1px solid var(--border);
  background: rgba(2, 4, 9, 0.88);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  width: 190px;
  height: 46px;
  overflow: hidden;
  text-decoration: none;
}

.brand img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: left center;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.site-nav a {
  padding: 0.58rem 0.9rem;
  border-radius: 8px;
  color: var(--muted);
  font-size: 0.88rem;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--text);
  background: var(--glass);
}

.blog-shell {
  width: min(100%, 1180px);
  margin: 0 auto;
  padding: clamp(2rem, 5vw, 5rem) clamp(1rem, 4vw, 2rem);
}

.hero {
  display: grid;
  gap: 1.1rem;
  max-width: 760px;
  margin-bottom: 3rem;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  width: fit-content;
  color: var(--blue-glow);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: var(--blue-bright);
  box-shadow: 0 0 16px rgba(96, 165, 250, 0.9);
}

h1 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(2.5rem, 6vw, 5rem);
  line-height: 1.02;
  letter-spacing: 0;
}

.lead {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.8;
}

.posts-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.post-card {
  min-height: 310px;
  display: grid;
  align-content: start;
  gap: 1rem;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--panel);
  text-decoration: none;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.24);
  transition: transform 0.22s ease, border-color 0.22s ease;
}

.post-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-blue);
}

.post-cover {
  aspect-ratio: 16 / 9;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--border-blue);
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.18), rgba(5, 13, 26, 0.88));
  color: var(--blue-glow);
  font-family: var(--mono);
  font-weight: 700;
}

.post-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.post-meta {
  color: var(--blue-glow);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.post-card h2,
.article h1 {
  margin: 0;
  font-family: var(--display);
  letter-spacing: 0;
}

.post-card h2 {
  font-size: 1.35rem;
  line-height: 1.2;
}

.post-card p,
.article p {
  color: var(--muted);
  line-height: 1.75;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.tag {
  padding: 0.28rem 0.55rem;
  border: 1px solid rgba(96, 165, 250, 0.24);
  border-radius: 999px;
  color: var(--blue-glow);
  font-family: var(--mono);
  font-size: 0.65rem;
  text-transform: uppercase;
}

.article {
  width: min(100%, 820px);
  margin: 0 auto;
}

.article-cover {
  width: 100%;
  margin: 2rem 0;
  overflow: hidden;
  border: 1px solid var(--border-blue);
  border-radius: 12px;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.18), rgba(5, 13, 26, 0.88));
}

.article-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.article-body {
  padding: 1.5rem 0 3rem;
  color: var(--text);
  font-size: 1.05rem;
}

.article-body p {
  margin: 0 0 1.25rem;
}

.back-link {
  display: inline-flex;
  margin-bottom: 1.5rem;
  color: var(--blue-glow);
  text-decoration: none;
  font-weight: 700;
}

.empty-state {
  padding: 1.5rem;
  border: 1px dashed var(--border-blue);
  border-radius: 12px;
  color: var(--muted);
  background: rgba(37, 99, 235, 0.05);
}

@media (max-width: 900px) {
  .posts-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .site-header {
    height: auto;
    align-items: flex-start;
    flex-direction: column;
    padding-block: 0.9rem;
  }

  .brand { width: 168px; }
  .site-nav { width: 100%; flex-wrap: wrap; }
  .site-nav a { flex: 1; text-align: center; }
}