:root {
  --bg: #050816;
  --bg-elevated: #0f172a;
  --accent: #38bdf8;
  --accent-soft: rgba(56, 189, 248, 0.08);
  --text: #e5e7eb;
  --muted: #9ca3af;
  --border-subtle: rgba(148, 163, 184, 0.35);
  --radius-lg: 1.25rem;
  --radius-full: 999px;
  --shadow-soft: 0 22px 45px rgba(15, 23, 42, 0.75);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text",
    "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #0f172a 0, #020617 55%, #000 100%);
  color: var(--text);
  line-height: 1.6;
}

/* Layout */

.container {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(16px);
  background: linear-gradient(
    to bottom,
    rgba(15, 23, 42, 0.96),
    rgba(15, 23, 42, 0.85),
    transparent
  );
  border-bottom: 1px solid rgba(148, 163, 184, 0.35);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 0;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.logo {
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--text);
  font-size: 0.95rem;
}

.tagline {
  margin: 0;
  font-size: 0.75rem;
  color: var(--muted);
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.nav-link {
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--muted);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  transition: all 0.15s ease-out;
}

.nav-link:hover {
  color: var(--text);
  border-color: rgba(148, 163, 184, 0.6);
  background: rgba(15, 23, 42, 0.85);
}

.nav-link.active {
  color: var(--accent);
  border-color: rgba(56, 189, 248, 0.5);
  background: var(--accent-soft);
}

/* Hero */

.hero {
  padding: 3.5rem 0 1.25rem;
}

.hero-inner h1 {
  font-size: clamp(2rem, 4vw, 2.6rem);
  margin: 0 0 0.75rem;
}

.hero-inner p {
  margin: 0;
  max-width: 34rem;
  color: var(--muted);
}

/* Posts */

.posts {
  display: grid;
  gap: 1rem;
  padding-bottom: 3rem;
}

.post-card {
  background: radial-gradient(circle at top left, #1e293b 0, #020617 70%);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.4rem;
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-soft);
  position: relative;
  overflow: hidden;
}

.post-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at top right,
    rgba(56, 189, 248, 0.06),
    transparent 55%
  );
  opacity: 0;
  transition: opacity 0.16s ease-out;
  pointer-events: none;
}

.post-card:hover::before {
  opacity: 1;
}

.post-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
}

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

.post-meta {
  margin: 0.25rem 0 0.5rem;
  font-size: 0.8rem;
  color: var(--muted);
}

.post-excerpt {
  margin: 0 0 0.9rem;
  font-size: 0.9rem;
  color: var(--text);
}

.post-readmore {
  display: inline-flex;
  align-items: center;
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--accent);
  padding: 0.35rem 0.7rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(56, 189, 248, 0.5);
  background: var(--accent-soft);
  backdrop-filter: blur(12px);
  transition: all 0.16s ease-out;
}

.post-readmore:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 25px rgba(15, 23, 42, 0.85);
}

/* About */

.about {
  border-top: 1px dashed rgba(75, 85, 99, 0.7);
  padding: 2.5rem 0 3rem;
  background: radial-gradient(circle at bottom, #020617 0, #000 50%);
}

.about h2 {
  margin-top: 0;
  margin-bottom: 0.5rem;
}

.about p {
  margin: 0;
  max-width: 36rem;
  color: var(--muted);
}

/* Footer */

.site-footer {
  border-top: 1px solid rgba(15, 23, 42, 0.95);
  background: #020617;
  padding: 1.25rem 0 1.75rem;
}

.footer-inner {
  text-align: center;
  font-size: 0.8rem;
  color: var(--muted);
}

/* Content */

.content img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-lg);
  margin-bottom: 2rem;
}

/* Responsive */

@media (max-width: 640px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
    padding-bottom: 0.6rem;
  }

  .nav {
    width: 100%;
    justify-content: flex-start;
    overflow-x: auto;
  }

  .post-card {
    padding: 1.05rem 1.1rem;
  }

  p a {
    color: white;
    font-weight: bold;
  }

  p a:hover {
      color: #f0f0f0;
      font-weight: bold;
      text-decoration: underline;
  }
}