@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

:root {
  --background: 222 47% 11%;
  --foreground: 210 40% 98%;
  --card: 222 47% 14%;
  --primary: 270 91% 65%;
  --primary-foreground: 210 40% 98%;
  --secondary: 217 33% 17%;
  --muted-foreground: 215 20% 65%;
  --accent: 263 70% 50%;
  --border: 217 33% 25%;
  --glass-bg: 217 33% 17%;
  --glass-border: 217 33% 30%;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: hsl(var(--background));
  color: hsl(var(--foreground));
  font-family: 'Inter', sans-serif;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

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

.wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Nav */
nav.top {
  position: sticky;
  top: 0;
  z-index: 50;
  background: hsl(var(--background) / 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid hsl(var(--border) / 0.5);
}

nav.top .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.wordmark {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 20px;
  font-weight: 800;
  color: hsl(var(--foreground));
}

.wordmark svg {
  width: 28px;
  height: 28px;
  color: hsl(var(--primary));
}

.wordmark .accent {
  color: hsl(var(--primary));
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: hsl(var(--muted-foreground));
  transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: hsl(var(--foreground));
}

@media (max-width: 720px) {
  .nav-links {
    display: none;
  }
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 14px;
  padding: 10px 20px;
  transition: all 0.2s;
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: hsl(var(--foreground));
  color: hsl(var(--background));
}

.btn-primary:hover {
  background: hsl(var(--foreground) / 0.9);
}

/* Hero / header band */
.blog-hero {
  padding: 64px 0 48px;
  text-align: center;
  background: radial-gradient(ellipse 80% 50% at 50% -20%, hsl(263 70% 30% / 0.5) 0%, transparent 80%),
              linear-gradient(180deg, hsl(222 47% 11%) 0%, hsl(217 33% 12%) 100%);
}

.blog-hero .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 999px;
  background: hsl(var(--primary) / 0.1);
  border: 1px solid hsl(var(--primary) / 0.2);
  color: hsl(var(--primary));
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
}

.blog-hero h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 800;
  margin: 0 0 16px;
  letter-spacing: -0.02em;
}

.blog-hero p {
  color: hsl(var(--muted-foreground));
  font-size: 18px;
  max-width: 620px;
  margin: 0 auto;
}

.gradient-text {
  background: linear-gradient(to right, hsl(var(--primary)), hsl(var(--accent)));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Blog index grid */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  padding: 24px 0 96px;
}

@media (max-width: 900px) {
  .blog-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 620px) {
  .blog-grid {
    grid-template-columns: 1fr;
  }
}

.post-card {
  background: linear-gradient(135deg, hsl(217 33% 17% / 0.6) 0%, hsl(217 33% 14% / 0.4) 100%);
  border: 1px solid hsl(var(--glass-border) / 0.3);
  border-radius: 14px;
  overflow: hidden;
  transition: all 0.25s;
  display: flex;
  flex-direction: column;
}

.post-card:hover {
  border-color: hsl(var(--primary) / 0.4);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px hsl(0 0% 0% / 0.3);
}

.post-card img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.post-card .post-body {
  padding: 20px 22px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.post-card .category {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: hsl(var(--primary));
  margin-bottom: 10px;
}

.post-card h2 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.35;
  margin: 0 0 10px;
}

.post-card p {
  color: hsl(var(--muted-foreground));
  font-size: 14px;
  line-height: 1.6;
  margin: 0;
}

/* Article page */
.article-wrap {
  max-width: 760px;
  padding-top: 56px;
  padding-bottom: 96px;
}

.article .eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: hsl(var(--primary));
  margin-bottom: 14px;
}

.article h1 {
  font-size: clamp(1.9rem, 4vw, 2.75rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 14px;
}

.article-meta {
  color: hsl(var(--muted-foreground));
  font-size: 14px;
  margin: 0 0 28px;
}

.article-hero-img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 16px;
  margin-bottom: 40px;
  border: 1px solid hsl(var(--glass-border) / 0.3);
}

.article-body h2 {
  font-size: 26px;
  font-weight: 700;
  margin: 40px 0 16px;
  letter-spacing: -0.01em;
}

.article-body h3 {
  font-size: 20px;
  font-weight: 700;
  margin: 32px 0 12px;
}

.article-body p {
  color: hsl(var(--muted-foreground));
  font-size: 17px;
  line-height: 1.75;
  margin: 0 0 20px;
}

.article-body strong {
  color: hsl(var(--foreground));
}

.article-body ul,
.article-body ol {
  color: hsl(var(--muted-foreground));
  font-size: 17px;
  line-height: 1.75;
  margin: 0 0 20px;
  padding-left: 24px;
}

.article-body li {
  margin-bottom: 10px;
}

.article-body li strong {
  color: hsl(var(--foreground));
}

.article-cta {
  margin-top: 56px;
  padding: 36px;
  border-radius: 16px;
  text-align: center;
  background: linear-gradient(135deg, hsl(217 33% 17% / 0.6) 0%, hsl(217 33% 14% / 0.4) 100%);
  border: 1px solid hsl(var(--glass-border) / 0.3);
}

.article-cta h3 {
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 10px;
}

.article-cta p {
  color: hsl(var(--muted-foreground));
  margin: 0 0 22px;
  font-size: 15px;
}

.article-related {
  max-width: 760px;
  margin: 0 auto;
  padding-bottom: 96px;
}

.article-related h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
}

.article-related ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.article-related a {
  display: block;
  padding: 16px 20px;
  border-radius: 10px;
  background: hsl(var(--secondary) / 0.4);
  border: 1px solid hsl(var(--border) / 0.4);
  font-size: 15px;
  font-weight: 500;
  transition: all 0.2s;
}

.article-related a:hover {
  border-color: hsl(var(--primary) / 0.4);
  color: hsl(var(--primary));
}

/* Footer */
footer {
  background: hsl(var(--secondary) / 0.3);
  border-top: 1px solid hsl(var(--border) / 0.5);
}

.foot-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 32px;
  padding: 48px 0;
}

@media (max-width: 720px) {
  .foot-top {
    grid-template-columns: 1fr;
  }
}

.foot-brand .wordmark {
  margin-bottom: 16px;
}

.foot-brand p {
  color: hsl(var(--muted-foreground));
  max-width: 380px;
  line-height: 1.6;
  font-size: 15px;
}

.foot-col h4 {
  font-size: 15px;
  font-weight: 600;
  margin: 0 0 16px;
}

.foot-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.foot-col a,
.foot-col p {
  color: hsl(var(--muted-foreground));
  font-size: 14px;
  transition: color 0.2s;
}

.foot-col a:hover {
  color: hsl(var(--primary));
}

.foot-bottom {
  border-top: 1px solid hsl(var(--border) / 0.5);
  padding: 28px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  color: hsl(var(--muted-foreground));
  font-size: 14px;
}

.foot-bottom .links {
  display: flex;
  gap: 24px;
}

.foot-bottom a:hover {
  color: hsl(var(--primary));
}