*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --primary: #1A7AE6; --primary-dark: #0D5BB5; --primary-light: #3D9AFF;
  --dark: #1A1A2E; --dark-alt: #16213E;
  --grey-700: #3A3A4A; --grey-600: #555566; --grey-500: #6B6B7B;
  --grey-400: #8E8E9E; --grey-300: #B0B0BE; --grey-200: #D0D0DA;
  --grey-100: #EAEAF0; --grey-50: #F5F5F8; --white: #FFFFFF;
  --accent: #FF6B35; --success: #22C55E;
  --font-display: 'Barlow Condensed', sans-serif;
  --font-body: 'Barlow', sans-serif;
}
html { scroll-behavior: smooth; }
body { font-family: var(--font-body); color: var(--grey-700); background: var(--white); line-height: 1.8; }
.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }

/* Navbar (Premium Glassmorphism) */
.navbar {
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  position: sticky;
  top: 0;
  z-index: 99;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.04);
  border-bottom: 1px solid rgba(255, 255, 255, 0.4);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}
.nav-inner { max-width: 1280px; margin: 0 auto; padding: 0 24px; display: flex; justify-content: space-between; align-items: center; height: 72px; }
.nav-links { display: flex; gap: 0; align-items: center; list-style: none; }
.nav-links > li { position: relative; }
.nav-links a { padding: 24px 18px; font-weight: 600; font-size: 0.9rem; color: var(--grey-700); text-decoration: none; transition: color 0.2s ease; }
.nav-links a:hover { color: var(--primary); }
.nav-links .arrow { font-size: 0.6rem; transition: transform 0.2s; }
/* Dropdown */
.dropdown {
  position: absolute;
  top: 100%; left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: var(--white);
  min-width: 220px;
  border-radius: 8px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.08);
  padding: 12px 0;
  opacity: 0; visibility: hidden;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  border: 1px solid var(--grey-100);
  z-index: 100;
}
.nav-links > li:hover .dropdown {
  opacity: 1; visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.dropdown a {
  display: block !important;
  padding: 10px 24px !important;
  color: var(--grey-600);
  font-size: 0.88rem;
  font-weight: 500;
}
.dropdown a:hover {
  background: var(--grey-50);
  color: var(--primary);
  padding-left: 28px !important;
}
.nav-cta {
  background: var(--primary);
  color: var(--white) !important;
  padding: 10px 24px !important;
  border-radius: 6px;
  margin-left: 12px;
  font-weight: 700;
  transition: all 0.3s ease;
}
.nav-cta:hover {
  background: var(--primary-dark);
  box-shadow: 0 4px 12px rgba(26,122,230,0.3);
  transform: translateY(-1px);
}

/* Blog index */
.blog-hero { background: linear-gradient(135deg, var(--dark), var(--dark-alt)); padding: 80px 0 60px; }
.blog-hero h1 { font-family: var(--font-display); font-weight: 800; font-size: 2.8rem; color: var(--white); }
.blog-hero p { color: var(--grey-400); font-size: 1.05rem; margin-top: 12px; }
.blog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; padding: 60px 0 100px; }
.blog-card { border-radius: 12px; overflow: hidden; border: 1px solid var(--grey-100); transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1); background: var(--white); }
.blog-card:hover { transform: translateY(-8px) scale(1.015); box-shadow: 0 20px 48px rgba(26, 122, 230, 0.12); border-color: rgba(26, 122, 230, 0.2); }
.blog-card img { width: 100%; height: 220px; object-fit: cover; transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1); }
.blog-card:hover img { transform: scale(1.03); }
.blog-card-body { padding: 28px; }
.blog-card-tag { display: inline-block; background: rgba(26,122,230,0.08); color: var(--primary); font-size: 0.72rem; font-weight: 700; padding: 4px 12px; border-radius: 4px; text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 12px; }
.blog-card h2 { font-family: var(--font-display); font-weight: 700; font-size: 1.3rem; color: var(--dark); line-height: 1.3; margin-bottom: 10px; }
.blog-card p { font-size: 0.88rem; color: var(--grey-500); line-height: 1.7; }
.blog-card-link { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; font-size: 0.88rem; color: var(--primary); margin-top: 16px; transition: gap 0.3s ease; }
.blog-card:hover .blog-card-link { gap: 10px; }

/* Article page */
.article-header { background: linear-gradient(135deg, var(--dark), var(--dark-alt)); padding: 80px 0 60px; }
.article-header .breadcrumb { font-size: 0.82rem; color: var(--grey-400); margin-bottom: 20px; }
.article-header .breadcrumb a { color: var(--primary-light); }
.article-header h1 { font-family: var(--font-display); font-weight: 800; font-size: clamp(2rem, 4vw, 2.8rem); color: var(--white); line-height: 1.2; max-width: 800px; }
.article-header .meta { color: var(--grey-400); font-size: 0.85rem; margin-top: 16px; }
.article-body { max-width: 780px; margin: 0 auto; padding: 60px 24px 80px; }
.article-body h2 { font-family: var(--font-display); font-weight: 700; font-size: 1.6rem; color: var(--dark); margin: 40px 0 16px; }
.article-body h3 { font-family: var(--font-display); font-weight: 700; font-size: 1.2rem; color: var(--dark); margin: 32px 0 12px; }
.article-body p { font-size: 1rem; color: var(--grey-600); line-height: 1.9; margin-bottom: 20px; }
.article-body ul, .article-body ol { margin: 0 0 20px 24px; color: var(--grey-600); }
.article-body li { margin-bottom: 8px; line-height: 1.7; }
.article-body img { width: 100%; border-radius: 12px; margin: 28px 0; }
.article-body blockquote { border-left: 4px solid var(--primary); padding: 20px 28px; background: var(--grey-50); border-radius: 0 8px 8px 0; margin: 28px 0; font-style: italic; color: var(--grey-600); }
.cta-box { background: linear-gradient(135deg, var(--dark), var(--dark-alt)); border-radius: 16px; padding: 48px; text-align: center; margin: 48px 0; }
.cta-box h3 { font-family: var(--font-display); font-weight: 700; font-size: 1.5rem; color: var(--white); margin-bottom: 12px; }
.cta-box p { color: var(--grey-400); margin-bottom: 24px; font-size: 0.95rem; }
.cta-box .btn { display: inline-flex; align-items: center; gap: 8px; padding: 14px 32px; font-weight: 700; border-radius: 6px; text-decoration: none; }
.cta-box .btn-primary { background: var(--primary); color: var(--white); }
.cta-box .btn-wa { background: #25D366; color: var(--white); margin-left: 12px; }

/* Footer */
.blog-footer { background: #0D0D1A; padding: 40px 0; }
.blog-footer .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px; font-size: 0.82rem; color: var(--grey-500); }
.blog-footer a { color: var(--grey-400); text-decoration: none; }

@media (max-width: 768px) {
  .blog-grid { grid-template-columns: 1fr; }
  .nav-links { display: none; }
}