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

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

:root {
  --bg: hsl(230, 25%, 7%);
  --fg: hsl(0, 0%, 95%);
  --card: hsl(230, 20%, 12%);
  --primary: hsl(220, 80%, 55%);
  --primary-fg: hsl(0, 0%, 100%);
  --secondary: hsl(230, 20%, 16%);
  --muted: hsl(230, 10%, 55%);
  --border: hsl(230, 15%, 18%);
  --radius: 0.75rem;
  --gradient-cta: linear-gradient(135deg, hsl(220, 80%, 55%) 0%, hsl(250, 70%, 50%) 100%);
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  -webkit-font-smoothing: antialiased;
  line-height: 1.7;
  font-size: 16px;
}

a { color: var(--primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: hsl(220, 80%, 65%); }

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

/* NAVBAR */
.blog-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  background: hsla(230, 25%, 7%, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  height: 64px;
}
.blog-nav .nav-inner {
  max-width: 1280px; margin: 0 auto; padding: 0 24px;
  height: 100%; display: flex; align-items: center; justify-content: space-between;
}
.blog-nav .nav-logo img { height: 40px; }
.blog-nav .nav-links { display: flex; align-items: center; gap: 24px; }
.blog-nav .nav-links a {
  color: var(--muted); font-size: 14px; font-weight: 500;
  transition: color 0.2s;
}
.blog-nav .nav-links a:hover { color: var(--fg); }
.blog-nav .nav-cta {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 24px; border-radius: 12px; font-weight: 600; font-size: 14px;
  background: var(--gradient-cta); color: var(--primary-fg);
  box-shadow: 0 4px 20px -4px hsla(220, 80%, 55%, 0.4);
  transition: all 0.3s;
}
.blog-nav .nav-cta:hover { transform: translateY(-2px); color: var(--primary-fg); }
.blog-nav .nav-mobile-toggle {
  display: none; background: none; border: none; color: var(--fg);
  font-size: 24px; cursor: pointer; width: 40px; height: 40px;
  align-items: center; justify-content: center; border-radius: 8px;
}
@media (max-width: 1023px) {
  .blog-nav .nav-links, .blog-nav .nav-cta { display: none; }
  .blog-nav .nav-mobile-toggle { display: flex; }
}

/* BREADCRUMB */
.breadcrumb {
  padding: 100px 24px 0;
  max-width: 800px; margin: 0 auto;
  font-size: 13px; color: var(--muted);
}
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--fg); }
.breadcrumb span { margin: 0 8px; }

/* ARTICLE */
.article-container {
  max-width: 800px; margin: 0 auto; padding: 32px 24px 80px;
}
.article-container .article-meta {
  display: flex; align-items: center; gap: 16px; margin-bottom: 24px;
  font-size: 13px; color: var(--muted);
}
.article-container .article-category {
  display: inline-block; padding: 4px 14px; border-radius: 50px;
  background: hsla(220, 80%, 55%, 0.1); color: var(--primary);
  font-size: 12px; font-weight: 600;
}
.article-container h1 {
  font-size: clamp(28px, 5vw, 42px); font-weight: 800;
  line-height: 1.2; margin-bottom: 24px; color: var(--fg);
}
.article-container h2 {
  font-size: clamp(22px, 3.5vw, 28px); font-weight: 700;
  margin: 48px 0 16px; color: var(--fg); line-height: 1.3;
}
.article-container h3 {
  font-size: clamp(18px, 3vw, 22px); font-weight: 600;
  margin: 32px 0 12px; color: var(--fg); line-height: 1.4;
}
.article-container p {
  margin-bottom: 16px; color: hsl(230, 10%, 72%); line-height: 1.8;
}
.article-container ul, .article-container ol {
  margin: 16px 0; padding-left: 24px; color: hsl(230, 10%, 72%);
}
.article-container li { margin-bottom: 8px; line-height: 1.7; }
.article-container strong { color: var(--fg); font-weight: 600; }
.article-container .article-image {
  width: 100%; border-radius: var(--radius); margin: 32px 0;
  border: 1px solid var(--border);
}
.article-container blockquote {
  border-left: 3px solid var(--primary); padding: 16px 24px;
  margin: 24px 0; background: var(--card); border-radius: 0 var(--radius) var(--radius) 0;
  color: hsl(230, 10%, 72%); font-style: italic;
}
.article-container .cta-box {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 32px; text-align: center;
  margin: 40px 0;
}
.article-container .cta-box h3 { margin-top: 0; }
.article-container .cta-box .btn-cta {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; border-radius: 12px; font-weight: 600; font-size: 15px;
  background: var(--gradient-cta); color: var(--primary-fg);
  box-shadow: 0 4px 20px -4px hsla(220, 80%, 55%, 0.4);
  transition: all 0.3s; margin-top: 16px;
}
.article-container .cta-box .btn-cta:hover {
  transform: translateY(-2px); color: var(--primary-fg);
}
.article-container .info-box {
  background: hsla(220, 80%, 55%, 0.08); border: 1px solid hsla(220, 80%, 55%, 0.2);
  border-radius: var(--radius); padding: 20px 24px; margin: 24px 0;
}
.article-container .info-box p { margin-bottom: 0; }
.article-container table {
  width: 100%; border-collapse: collapse; margin: 24px 0;
}
.article-container th, .article-container td {
  padding: 12px 16px; text-align: left; border: 1px solid var(--border);
  font-size: 14px;
}
.article-container th {
  background: var(--card); color: var(--fg); font-weight: 600;
}
.article-container td { color: hsl(230, 10%, 72%); }

/* FOOTER */
.blog-footer {
  border-top: 1px solid var(--border);
}
.blog-footer .footer-cta {
  padding: 80px 24px; text-align: center; position: relative;
  background: linear-gradient(180deg, transparent, hsla(220, 80%, 55%, 0.05), hsla(220, 80%, 55%, 0.1));
}
.blog-footer .footer-cta h2 {
  font-size: clamp(24px, 4vw, 36px); font-weight: 700;
  margin-bottom: 16px;
}
.blog-footer .footer-cta p {
  color: var(--muted); max-width: 640px; margin: 0 auto 32px;
}
.blog-footer .footer-cta .btn-cta {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; border-radius: 12px; font-weight: 600;
  background: var(--gradient-cta); color: var(--primary-fg);
  box-shadow: 0 4px 20px -4px hsla(220, 80%, 55%, 0.4);
  transition: all 0.3s;
}
.blog-footer .footer-cta .btn-cta:hover { transform: translateY(-2px); color: var(--primary-fg); }
.blog-footer .footer-cta .btn-wa {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; border-radius: 12px; font-weight: 600;
  border: 1px solid hsla(142, 71%, 45%, 0.3); background: hsla(142, 71%, 45%, 0.1);
  color: hsl(142, 71%, 55%); transition: all 0.3s; margin-left: 12px;
}
.blog-footer .footer-cta .btn-wa:hover { background: hsla(142, 71%, 45%, 0.2); color: hsl(142, 71%, 55%); }
.blog-footer .footer-bottom {
  max-width: 1280px; margin: 0 auto; padding: 40px 24px;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px;
}
.blog-footer .footer-bottom .footer-brand p {
  font-size: 13px; color: var(--muted); margin-top: 16px; line-height: 1.6;
}
.blog-footer .footer-bottom h4 {
  font-size: 13px; font-weight: 600; color: var(--fg); margin-bottom: 16px;
}
.blog-footer .footer-bottom ul { list-style: none; padding: 0; }
.blog-footer .footer-bottom li { margin-bottom: 10px; }
.blog-footer .footer-bottom li a { color: var(--muted); font-size: 13px; }
.blog-footer .footer-bottom li a:hover { color: var(--fg); }
.blog-footer .footer-copy {
  max-width: 1280px; margin: 0 auto; padding: 24px;
  border-top: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 16px;
}
.blog-footer .footer-copy p { font-size: 11px; color: var(--muted); }
.blog-footer .footer-copy a { color: var(--muted); font-size: 11px; margin-left: 24px; }
.blog-footer .footer-copy a:hover { color: var(--fg); }

@media (max-width: 768px) {
  .blog-footer .footer-bottom { grid-template-columns: repeat(2, 1fr); }
  .blog-footer .footer-cta .btn-cta,
  .blog-footer .footer-cta .btn-wa { display: block; width: 100%; max-width: 360px; margin: 8px auto; text-align: center; }
  .blog-footer .footer-cta .btn-wa { margin-left: auto; }
}
@media (max-width: 480px) {
  .blog-footer .footer-bottom { grid-template-columns: 1fr; }
}