/* ═══════════════════════════════════════════════════════
   blog.css — Infinity Data Center / Webservio Blog
   Bootstrap 5.3 + Bootstrap Icons required
═══════════════════════════════════════════════════════ */
:root {
  --ws-navy:   #0d1f3c;
  --ws-blue:   #1457a8;
  --ws-sky:    #2a8dd4;
  --ws-accent: #00b4d8;
  --ws-light:  #f4f7fb;
  --ws-border: #dce4ef;
  --ws-text:   #1a2535;
  --ws-muted:  #6b7a93;
  --ws-white:  #ffffff;
  --serif:  'Fraunces', Georgia, serif;
  --sans:   'IBM Plex Sans', sans-serif;
  --mono:   'IBM Plex Mono', monospace;
  --radius: 6px;
  --shadow-md: 0 6px 24px rgba(13,31,60,0.11);
}
*,*::before,*::after{box-sizing:border-box}
body{font-family:var(--sans);color:var(--ws-text);background:var(--ws-white);font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:var(--ws-sky)}a:hover{color:var(--ws-blue)}
img{max-width:100%;height:auto}

/* Navbar */
.site-navbar{background:var(--ws-white);border-bottom:1px solid var(--ws-border);padding:.45rem 0}
.navbar-brand-link{display:flex;flex-direction:column;line-height:1;text-decoration:none}
.brand-sub{font-family:var(--mono);font-size:.62rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ws-muted);margin-top:3px}
.site-navbar .nav-link{font-size:.82rem;font-weight:500;color:var(--ws-text)!important;padding:.4rem .8rem!important;transition:color .2s}
.site-navbar .nav-link:hover,.site-navbar .nav-link.active{color:var(--ws-sky)!important}
.dropdown-menu{border:1px solid var(--ws-border);border-radius:var(--radius);font-size:.82rem}
.dropdown-item:hover{background:var(--ws-light);color:var(--ws-sky)}
.dropdown-header{font-family:var(--mono);font-size:.62rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ws-muted);padding:.4rem 1rem .2rem}
.btn-nav-cta{display:inline-block;font-family:var(--mono);font-size:.75rem;font-weight:600;letter-spacing:.06em;background:var(--ws-sky);color:#fff!important;text-decoration:none;padding:7px 16px;border-radius:var(--radius);transition:background .2s}
.btn-nav-cta:hover{background:var(--ws-blue);color:#fff!important}

/* Featured Hero */
.featured-hero{background:var(--ws-light);border-bottom:1px solid var(--ws-border);overflow:hidden}
.featured-hero-inner{display:grid;grid-template-columns:1fr 1fr;min-height:400px}
@media(max-width:768px){.featured-hero-inner{grid-template-columns:1fr}.featured-hero-img{min-height:200px;order:-1}}
.featured-hero-body{padding:2.8rem 3rem;display:flex;flex-direction:column;justify-content:center}
.featured-hero-body h2{font-family:var(--serif);font-weight:600;font-size:clamp(1.4rem,3vw,2rem);color:var(--ws-navy);line-height:1.25;margin-bottom:.9rem}
.excerpt{color:var(--ws-muted);font-size:.93rem;line-height:1.75;margin-bottom:1.3rem}
.featured-meta{font-family:var(--mono);font-size:.74rem;color:var(--ws-muted);display:flex;align-items:center;gap:.8rem;margin-bottom:1.3rem}
.featured-meta .dot{width:30px;height:30px;border-radius:50%;background:var(--ws-navy);color:#fff;font-size:.58rem;font-weight:700;display:flex;align-items:center;justify-content:center}
.btn-read-more{display:inline-flex;align-items:center;gap:6px;font-family:var(--mono);font-size:.8rem;font-weight:500;color:var(--ws-sky);text-decoration:none;border-bottom:1px solid var(--ws-sky);padding-bottom:1px;align-self:flex-start;transition:.2s}
.btn-read-more:hover{color:var(--ws-blue);border-color:var(--ws-blue)}
.featured-hero-img{background:linear-gradient(135deg,var(--ws-navy) 0%,var(--ws-blue) 60%,var(--ws-sky) 100%);display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}
.featured-hero-img .bg-icon{font-size:10rem;color:rgba(255,255,255,.1)}
.featured-hero-img .img-label{position:absolute;bottom:1.2rem;left:1.2rem;font-family:var(--mono);font-size:.62rem;letter-spacing:.1em;color:rgba(255,255,255,.7);background:rgba(0,0,0,.35);padding:4px 10px;border-radius:3px}

/* Page hero */
.page-hero{background:var(--ws-light);border-bottom:1px solid var(--ws-border);padding:2.8rem 0 2.2rem}
.page-hero h1{font-family:var(--serif);font-weight:600;font-size:clamp(1.6rem,4vw,2.3rem);color:var(--ws-navy);line-height:1.22;margin-bottom:1rem}
.page-hero-tag{display:inline-block;font-family:var(--mono);font-size:.68rem;font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:var(--ws-sky);background:rgba(42,141,212,.1);padding:4px 12px;border-radius:3px;margin-bottom:.9rem}
.page-hero-desc{font-size:1rem;color:var(--ws-muted);line-height:1.75;max-width:680px;margin-bottom:1.4rem}

/* Category strip */
.category-strip{border-bottom:1px solid var(--ws-border);overflow-x:auto;background:var(--ws-white)}
.cat-nav{display:flex;list-style:none;margin:0;padding:0;white-space:nowrap}
.cat-nav li a{display:inline-block;font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ws-muted);text-decoration:none;padding:13px 18px;border-bottom:2px solid transparent;transition:.2s}
.cat-nav li a:hover,.cat-nav li a.active{color:var(--ws-sky);border-bottom-color:var(--ws-sky)}

/* Main content */
.main-content{padding:3rem 0 4rem}

/* Section label */
.section-label{font-family:var(--mono);font-size:.68rem;font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:var(--ws-muted);margin-bottom:1.4rem;display:flex;align-items:center;gap:1rem}
.section-label::after{content:'';flex:1;height:1px;background:var(--ws-border)}

/* Teaser cards */
.teaser-card{border:1px solid var(--ws-border);border-radius:var(--radius);background:var(--ws-white);display:flex;flex-direction:column;height:100%;overflow:hidden;transition:box-shadow .22s,border-color .22s,transform .22s}
.teaser-card:hover{box-shadow:var(--shadow-md);border-color:#b8cde6;transform:translateY(-2px)}
.teaser-thumb{height:175px;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden;background:linear-gradient(135deg,var(--ws-navy),var(--ws-blue))}
.teaser-thumb .t-icon{font-size:3.6rem;color:rgba(255,255,255,.13)}
.teaser-thumb .t-tag{position:absolute;top:12px;left:12px;font-family:var(--mono);font-size:.61rem;letter-spacing:.1em;text-transform:uppercase;color:rgba(255,255,255,.85);background:rgba(0,0,0,.32);padding:3px 9px;border-radius:3px}
.t-email    {background:linear-gradient(135deg,#1c3a5e,#2a8dd4)}
.t-security {background:linear-gradient(135deg,#0d1f3c,#1457a8)}
.t-hosting  {background:linear-gradient(135deg,#0b3d5e,#00b4d8)}
.t-infra    {background:linear-gradient(135deg,#122b22,#217a4e)}
.t-cloud    {background:linear-gradient(135deg,#2a1a4e,#6c3fbf)}
.t-ai       {background:linear-gradient(135deg,#1a1a2e,#4a3f8a)}
.t-partner  {background:linear-gradient(135deg,#2a1a10,#8a5a20)}
.teaser-body{padding:1.35rem 1.45rem 1.5rem;display:flex;flex-direction:column;flex:1}
.teaser-cat{font-family:var(--mono);font-size:.62rem;font-weight:500;letter-spacing:.12em;text-transform:uppercase;color:var(--ws-sky);margin-bottom:.55rem}
.teaser-title{font-family:var(--serif);font-weight:600;font-size:1.04rem;color:var(--ws-navy);line-height:1.3;margin-bottom:.6rem;text-decoration:none;display:block;transition:color .2s}
.teaser-title:hover{color:var(--ws-sky)}
.teaser-excerpt{font-size:.83rem;color:var(--ws-muted);line-height:1.65;flex:1;margin-bottom:1.1rem}
.teaser-footer{display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--ws-border);padding-top:.9rem;font-family:var(--mono);font-size:.69rem;color:var(--ws-muted)}
.teaser-read-time{display:flex;align-items:center;gap:4px}
.teaser-arrow{color:var(--ws-sky);font-size:.85rem;transition:transform .2s}
.teaser-card:hover .teaser-arrow{transform:translateX(4px)}

/* Breadcrumb */
.breadcrumb-ws{font-family:var(--mono);font-size:.7rem;color:var(--ws-muted);display:flex;align-items:center;gap:.4rem;margin-bottom:1rem;flex-wrap:wrap}
.breadcrumb-ws a{color:var(--ws-sky);text-decoration:none}.breadcrumb-ws a:hover{color:var(--ws-blue)}
.breadcrumb-ws .sep{font-size:.55rem}

/* Byline */
.article-byline{display:flex;align-items:center;gap:.9rem;font-family:var(--mono);font-size:.74rem;color:var(--ws-muted);flex-wrap:wrap}
.byline-avatar{width:36px;height:36px;border-radius:50%;background:var(--ws-navy);color:#fff;font-size:.58rem;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0;letter-spacing:-.02em}
.byline-name{color:var(--ws-text);font-weight:500}
.byline-sep{color:var(--ws-border)}

/* Article content */
.article-content{font-size:1rem;line-height:1.8;color:#2c3a4e;max-width:720px}
.article-content h2{font-family:var(--serif);font-weight:600;font-size:1.4rem;color:var(--ws-navy);margin-top:2.2rem;margin-bottom:.75rem;padding-bottom:.5rem;border-bottom:1px solid var(--ws-border)}
.article-content h3{font-family:var(--sans);font-weight:600;font-size:1.05rem;color:var(--ws-navy);margin-top:1.8rem;margin-bottom:.5rem}
.article-content p{margin-bottom:1.3rem}
.article-content ul,.article-content ol{padding-left:1.5rem;margin-bottom:1.3rem}
.article-content li{margin-bottom:.35rem}
.article-content a{color:var(--ws-sky)}.article-content a:hover{color:var(--ws-blue)}
.article-content code{font-family:var(--mono);font-size:.86em;background:var(--ws-light);border:1px solid var(--ws-border);border-radius:3px;padding:1px 5px;color:var(--ws-blue)}
.article-content strong{color:var(--ws-navy);font-weight:600}

/* Callouts */
.callout{border-left:3px solid var(--ws-sky);background:rgba(42,141,212,.06);padding:1rem 1.3rem;border-radius:0 var(--radius) var(--radius) 0;margin:1.8rem 0;font-size:.93rem;color:var(--ws-navy)}
.callout.callout--warning{border-left-color:#e07b2a;background:rgba(224,123,42,.06)}
.callout.callout--success{border-left-color:#217a4e;background:rgba(33,122,78,.06)}

/* Code blocks */
.code-block{background:var(--ws-navy);border-radius:var(--radius);padding:1.2rem 1.4rem;margin:1.5rem 0;overflow-x:auto;font-family:var(--mono);font-size:.82rem;color:#a8d8f0;line-height:1.65;position:relative}
.code-block pre{margin:0;color:inherit;background:none}
.code-label{position:absolute;top:10px;right:12px;font-size:.59rem;letter-spacing:.1em;text-transform:uppercase;color:rgba(255,255,255,.22)}

/* Share bar */
.share-bar{display:flex;align-items:center;gap:.65rem;flex-wrap:wrap;padding:1.3rem 0;border-top:1px solid var(--ws-border);border-bottom:1px solid var(--ws-border);margin:2.5rem 0}
.share-label{font-family:var(--mono);font-size:.69rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ws-muted)}
.share-btn{font-family:var(--mono);font-size:.74rem;color:var(--ws-muted);border:1px solid var(--ws-border);border-radius:4px;padding:5px 12px;text-decoration:none;display:flex;align-items:center;gap:5px;background:none;cursor:pointer;transition:.2s}
.share-btn:hover{color:var(--ws-sky);border-color:var(--ws-sky);background:rgba(42,141,212,.04)}

/* Author bio */
.author-bio{display:flex;gap:1rem;padding:1.5rem;background:var(--ws-light);border-radius:var(--radius);border:1px solid var(--ws-border)}
.author-bio-avatar{width:50px;height:50px;border-radius:50%;background:var(--ws-navy);color:#fff;font-family:var(--mono);font-size:.6rem;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0;letter-spacing:-.02em}
.author-bio-name{font-weight:600;font-size:.9rem;color:var(--ws-navy);margin-bottom:2px}
.author-bio-role{font-family:var(--mono);font-size:.69rem;color:var(--ws-sky);margin-bottom:.45rem}
.author-bio-desc{font-size:.82rem;color:var(--ws-muted);line-height:1.6;margin:0}

/* Sidebar */
.sidebar-sticky{position:sticky;top:76px}
.sidebar-block{border:1px solid var(--ws-border);border-radius:var(--radius);padding:1.35rem 1.45rem;margin-bottom:1.4rem;background:var(--ws-white)}
.sidebar-heading{font-family:var(--mono);font-size:.67rem;font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:var(--ws-muted);margin-bottom:1rem;padding-bottom:.7rem;border-bottom:1px solid var(--ws-border)}
.sidebar-search{font-family:var(--mono);font-size:.82rem;border:1px solid var(--ws-border);border-radius:4px;padding:8px 12px 8px 34px;width:100%;background:var(--ws-light) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='13' height='13' fill='%236b7a93' viewBox='0 0 16 16'%3E%3Cpath d='M11.742 10.344a6.5 6.5 0 1 0-1.397 1.398l3.85 3.85a1 1 0 0 0 1.415-1.414l-3.85-3.85a1 1 0 0 0-.115-.1zM12 6.5a5.5 5.5 0 1 1-11 0 5.5 5.5 0 0 1 11 0'/%3E%3C/svg%3E") no-repeat 10px center;color:var(--ws-text);outline:none;transition:border-color .2s}
.sidebar-search:focus{border-color:var(--ws-sky);background-color:#fff}
.pop-item{display:flex;gap:.8rem;align-items:flex-start;padding:.7rem 0;border-bottom:1px solid var(--ws-border);text-decoration:none}
.pop-item:last-child{border-bottom:none;padding-bottom:0}
.pop-num{font-family:var(--mono);font-size:1.1rem;color:var(--ws-border);line-height:1;min-width:24px}
.pop-title{font-size:.81rem;font-weight:500;color:var(--ws-navy);line-height:1.4;transition:color .2s}
.pop-item:hover .pop-title{color:var(--ws-sky)}
.pop-meta{font-family:var(--mono);font-size:.64rem;color:var(--ws-muted);margin-top:3px}
.tag-cloud{display:flex;flex-wrap:wrap;gap:6px}
.tag-pill{font-family:var(--mono);font-size:.66rem;letter-spacing:.06em;color:var(--ws-blue);background:rgba(20,87,168,.07);border:1px solid rgba(20,87,168,.15);border-radius:3px;padding:4px 10px;text-decoration:none;transition:.2s}
.tag-pill:hover{background:var(--ws-blue);color:#fff}
.sidebar-nl{background:linear-gradient(135deg,var(--ws-navy) 0%,var(--ws-blue) 100%);border:none;color:#fff;border-radius:var(--radius);padding:1.5rem 1.45rem;margin-bottom:1.4rem}
.sidebar-nl .sidebar-heading{color:rgba(255,255,255,.5);border-bottom-color:rgba(255,255,255,.12)}
.sidebar-nl p{font-size:.82rem;color:rgba(255,255,255,.7);line-height:1.6;margin-bottom:1rem}
.nl-input{font-family:var(--mono);font-size:.79rem;width:100%;border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.1);color:#fff;border-radius:4px;padding:8px 12px;margin-bottom:8px;outline:none}
.nl-input::placeholder{color:rgba(255,255,255,.38)}.nl-input:focus{border-color:var(--ws-accent)}
.nl-btn{width:100%;font-family:var(--mono);font-size:.71rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;background:var(--ws-accent);color:var(--ws-navy);border:none;border-radius:4px;padding:9px;cursor:pointer;transition:opacity .2s}
.nl-btn:hover{opacity:.88}
.sidebar-cta{background:linear-gradient(135deg,var(--ws-navy),var(--ws-blue));border:none;color:#fff;border-radius:var(--radius);padding:1.5rem 1.45rem;margin-bottom:1.4rem;text-align:center}
.sidebar-cta .sidebar-heading{color:rgba(255,255,255,.5);border-bottom-color:rgba(255,255,255,.12)}
.sidebar-cta p{font-size:.82rem;color:rgba(255,255,255,.7);line-height:1.6;margin-bottom:1rem}
.sidebar-cta a{display:block;font-family:var(--mono);font-size:.72rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;background:var(--ws-accent);color:var(--ws-navy);border-radius:4px;padding:10px;text-decoration:none;transition:opacity .2s}
.sidebar-cta a:hover{opacity:.88}
.toc-link{display:block;font-size:.81rem;color:var(--ws-muted);text-decoration:none;padding:4px 0 4px 10px;border-left:2px solid var(--ws-border);margin-bottom:4px;transition:.2s}
.toc-link:hover,.toc-link.active{color:var(--ws-sky);border-left-color:var(--ws-sky)}

/* Pagination */
.pagination-ws{display:flex;gap:4px;align-items:center;justify-content:center;margin-top:3rem}
.page-btn{font-family:var(--mono);font-size:.77rem;width:36px;height:36px;display:flex;align-items:center;justify-content:center;border:1px solid var(--ws-border);border-radius:4px;color:var(--ws-muted);text-decoration:none;transition:.2s}
.page-btn:hover,.page-btn.active{background:var(--ws-sky);border-color:var(--ws-sky);color:#fff}

/* Related section */
.related-section{background:var(--ws-light);border-top:1px solid var(--ws-border);padding:3rem 0}

/* Footer */
.site-footer{background:var(--ws-navy);color:rgba(255,255,255,.5);padding:3.5rem 0 2rem}
.footer-tagline{font-family:var(--mono);font-size:.67rem;letter-spacing:.1em;color:rgba(255,255,255,.35);margin-bottom:1rem}
.footer-desc{font-size:.81rem;color:rgba(255,255,255,.42);line-height:1.65;margin-bottom:1.2rem}
.footer-social{display:flex;gap:.8rem;margin-bottom:1rem}
.footer-social a{font-size:1.1rem;color:rgba(255,255,255,.38);transition:color .2s}.footer-social a:hover{color:var(--ws-accent)}
.footer-heading{font-family:var(--mono);font-size:.64rem;letter-spacing:.14em;text-transform:uppercase;color:rgba(255,255,255,.28);margin-bottom:.9rem}
.footer-links{list-style:none;padding:0;margin:0}
.footer-links li{margin-bottom:.5rem}
.footer-links a{font-size:.82rem;color:rgba(255,255,255,.5);text-decoration:none;transition:color .2s}
.footer-links a:hover{color:var(--ws-accent)}
.footer-newsletter p{font-size:.78rem;color:rgba(255,255,255,.42);margin-bottom:.6rem}
.footer-nl-form{display:flex}
.footer-nl-form input{flex:1;font-family:var(--mono);font-size:.78rem;padding:8px 12px;border:1px solid rgba(255,255,255,.15);border-right:none;background:rgba(255,255,255,.07);color:#fff;border-radius:4px 0 0 4px;outline:none}
.footer-nl-form input::placeholder{color:rgba(255,255,255,.3)}
.footer-nl-form button{font-family:var(--mono);font-size:.72rem;font-weight:600;padding:8px 14px;background:var(--ws-accent);color:var(--ws-navy);border:none;border-radius:0 4px 4px 0;cursor:pointer;white-space:nowrap}
.footer-nl-form button:hover{opacity:.88}
.footer-divider{border-color:rgba(255,255,255,.09);margin:2rem 0 1.3rem}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:.8rem;font-family:var(--mono);font-size:.67rem;color:rgba(255,255,255,.26);letter-spacing:.04em}
.footer-bottom-links{display:flex;gap:1.4rem}
.footer-bottom-links a{color:rgba(255,255,255,.35);text-decoration:none;transition:color .2s}
.footer-bottom-links a:hover{color:var(--ws-accent)}