/* ============================================
   AVESTRIL BLOG - Shared Styles
   ============================================ */
:root {
  --primary: #1a56db; --primary-dark: #1341b3;
  --primary-light: #dbeafe; --accent: #0ea5e9;
  --gold: #f59e0b; --green: #10b981;
  --dark: #0f172a; --gray: #64748b; --light: #f8fafc; --white: #ffffff;
  --shadow: 0 4px 24px rgba(26,86,219,0.13);
  --radius: 16px; --radius-sm: 10px;
  --transition: all 0.3s cubic-bezier(.4,0,.2,1);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body { font-family: 'Open Sans', sans-serif; color: var(--dark); background: var(--white); line-height: 1.75; }
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
h1,h2,h3,h4 { font-family: 'Montserrat', sans-serif; font-weight: 700; line-height: 1.3; }
.container { max-width: 900px; margin: 0 auto; padding: 0 20px; }
.wide-container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* NAV */
.navbar { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,0.97); backdrop-filter: blur(12px); border-bottom: 2px solid var(--primary-light); box-shadow: 0 2px 20px rgba(26,86,219,0.1); }
.nav-container { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; padding: 14px 20px; gap: 16px; }
.nav-logo { display: flex; align-items: center; gap: 10px; font-family: 'Montserrat', sans-serif; font-weight: 900; font-size: 22px; color: var(--primary); }
.nav-logo img { width: 38px; height: 38px; object-fit: contain; border-radius: 8px; }
.blog-nav-links { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.blog-nav-links a { font-family: 'Montserrat', sans-serif; font-weight: 600; font-size: 14px; color: var(--dark); padding: 8px 14px; border-radius: var(--radius-sm); transition: var(--transition); white-space: nowrap; }
.blog-nav-links a:hover { color: var(--primary); background: var(--primary-light); }
.btn-nav { background: linear-gradient(135deg, var(--primary), var(--accent)); color: var(--white) !important; padding: 10px 22px; border-radius: 50px; font-size: 14px; }
.btn-nav:hover { transform: scale(1.05); }

/* HERO BANNER */
.blog-hero { background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 100%); padding: 48px 0; text-align: center; }
.blog-hero h1 { color: var(--white); font-size: clamp(24px,4vw,42px); margin-bottom: 12px; }
.blog-hero p { color: rgba(255,255,255,0.7); font-size: 16px; }
.breadcrumb { color: rgba(255,255,255,0.5); font-size: 13px; margin-bottom: 14px; }
.breadcrumb a { color: var(--accent); }

/* ARTICLE */
.blog-layout { display: grid; grid-template-columns: 1fr 300px; gap: 40px; padding: 48px 0; align-items: start; }
@media (max-width: 768px) { .blog-layout { grid-template-columns: 1fr; } }
.article-body h2 { font-size: clamp(20px,3vw,28px); margin: 36px 0 14px; color: var(--primary); border-left: 4px solid var(--accent); padding-left: 16px; }
.article-body h3 { font-size: clamp(17px,2.5vw,22px); margin: 28px 0 10px; color: var(--dark); }
.article-body p { margin-bottom: 18px; font-size: 16px; color: #374151; line-height: 1.8; }
.article-body strong { color: var(--dark); }
.article-body ul { margin: 0 0 18px 24px; }
.article-body li { margin-bottom: 8px; color: #374151; font-size: 16px; }
.article-meta { color: var(--gray); font-size: 14px; margin-bottom: 24px; display: flex; gap: 16px; flex-wrap: wrap; }
.article-tag { background: var(--primary-light); color: var(--primary); padding: 3px 12px; border-radius: 50px; font-size: 12px; font-family: 'Montserrat', sans-serif; font-weight: 700; }
.cta-box { background: linear-gradient(135deg, var(--primary), var(--accent)); color: var(--white); border-radius: var(--radius); padding: 32px; text-align: center; margin: 36px 0; }
.cta-box h3 { color: var(--white); margin-bottom: 10px; font-size: 22px; }
.cta-box p { color: rgba(255,255,255,0.85); margin-bottom: 20px; }
.btn-cta-box { display: inline-block; background: var(--gold); color: var(--white); padding: 14px 32px; border-radius: 50px; font-family: 'Montserrat', sans-serif; font-weight: 700; font-size: 16px; transition: var(--transition); min-height: 50px; }
.btn-cta-box:hover { transform: scale(1.05); box-shadow: 0 8px 24px rgba(245,158,11,0.4); }

/* SIDEBAR */
.sidebar { position: sticky; top: 90px; }
.sidebar-widget { background: var(--light); border-radius: var(--radius); padding: 24px; margin-bottom: 24px; border: 2px solid var(--primary-light); }
.sidebar-widget h4 { font-size: 16px; margin-bottom: 16px; color: var(--primary); font-family: 'Montserrat', sans-serif; }
.sidebar-widget ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.sidebar-widget li a { font-size: 14px; color: var(--gray); transition: var(--transition); display: block; padding: 4px 0; border-bottom: 1px solid rgba(0,0,0,0.05); }
.sidebar-widget li a:hover { color: var(--primary); padding-left: 6px; }
.sidebar-cta { background: linear-gradient(135deg, #0f172a, #1e3a5f); color: var(--white); border: none; }
.sidebar-cta h4 { color: var(--white); }
.sidebar-cta p { color: rgba(255,255,255,0.75); font-size: 14px; margin-bottom: 16px; }
.btn-sidebar { display: block; background: var(--gold); color: var(--white); text-align: center; padding: 12px; border-radius: var(--radius-sm); font-family: 'Montserrat', sans-serif; font-weight: 700; font-size: 14px; transition: var(--transition); min-height: 46px; }
.btn-sidebar:hover { transform: scale(1.03); }
.related-posts { display: grid; grid-template-columns: 1fr; gap: 12px; margin-top: 40px; padding-top: 32px; border-top: 2px solid var(--primary-light); }
.related-posts h3 { grid-column: 1/-1; font-size: 20px; color: var(--dark); }
.related-card { background: var(--light); border-radius: var(--radius-sm); padding: 16px; border-left: 3px solid var(--primary); transition: var(--transition); }
.related-card:hover { transform: translateX(6px); background: var(--primary-light); }
.related-card a { font-family: 'Montserrat', sans-serif; font-weight: 700; font-size: 14px; color: var(--primary); display: block; }
.related-card span { font-size: 12px; color: var(--gray); }

/* BLOG INDEX GRID */
.blog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; padding: 48px 0; }
@media (max-width: 991px) { .blog-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 575px) { .blog-grid { grid-template-columns: 1fr; } }
.blog-card { background: var(--white); border-radius: var(--radius); box-shadow: var(--shadow); border: 2px solid var(--primary-light); overflow: hidden; transition: var(--transition); }
.blog-card:hover { transform: translateY(-6px); box-shadow: 0 12px 40px rgba(26,86,219,0.18); }
.blog-card-img { width: 100%; height: 180px; object-fit: cover; background: linear-gradient(135deg, var(--primary-light), #e0f2fe); display: flex; align-items: center; justify-content: center; font-size: 48px; }
.blog-card-body { padding: 20px; }
.blog-card-body .article-tag { margin-bottom: 10px; display: inline-block; }
.blog-card-body h3 { font-size: 17px; margin-bottom: 10px; }
.blog-card-body h3 a { color: var(--dark); transition: var(--transition); }
.blog-card-body h3 a:hover { color: var(--primary); }
.blog-card-body p { font-size: 14px; color: var(--gray); margin-bottom: 14px; line-height: 1.6; }
.read-more { color: var(--primary); font-family: 'Montserrat', sans-serif; font-weight: 700; font-size: 14px; }

/* FOOTER */
.footer { background: #0a0e1a; color: rgba(255,255,255,0.65); padding: 40px 0 20px; text-align: center; }
.footer a { color: var(--accent); }
.footer-links { display: flex; justify-content: center; flex-wrap: wrap; gap: 16px; margin-bottom: 16px; }
.footer-links a { font-size: 13px; color: rgba(255,255,255,0.55); }
.footer-links a:hover { color: var(--accent); }
.footer p { font-size: 12px; color: rgba(255,255,255,0.35); line-height: 1.6; max-width: 600px; margin: 12px auto 0; }

@media (max-width: 767px) {
  .blog-nav-links { display: none; }
}