/* ================================================================
   NITISH RAJ SEO — Blog Design System v2
   Mobile-first · Performance-optimized · EEAT-ready
   ================================================================ */

/* ---- Language Switcher ---- */
.lang-switcher{display:inline-flex;background:rgba(255,255,255,0.12);border-radius:50px;padding:4px;gap:4px}
.lang-btn{background:transparent;border:none;color:rgba(255,255,255,0.75);padding:7px 18px;border-radius:50px;font-size:0.9rem;font-family:var(--font-body);font-weight:600;cursor:pointer;transition:var(--transition)}
.lang-btn.active{background:#fff;color:var(--sky-dark);box-shadow:0 2px 8px rgba(0,0,0,0.15)}
.lang-switcher-inline{display:inline-flex;border:2px solid var(--sky);border-radius:50px;overflow:hidden}
.lang-btn-inline{border:none;background:transparent;color:var(--sky-dark);padding:6px 18px;font-size:0.85rem;font-weight:700;cursor:pointer;transition:var(--transition);font-family:var(--font-body)}
.lang-btn-inline.active{background:var(--sky);color:#fff}
.lang-block{display:none}
.lang-block.active{display:block}

/* ---- POST HEADER ---- */
.blog-post-header{background:linear-gradient(135deg,var(--dark) 0%,var(--dark2) 55%,var(--sky-dark) 100%);color:#fff;padding:56px 0 44px;position:relative;overflow:hidden}
.blog-post-header::before{content:'';position:absolute;top:-60px;right:-80px;width:340px;height:340px;border-radius:50%;background:rgba(56,182,232,0.08);pointer-events:none}
.blog-post-header::after{content:'';position:absolute;bottom:-40px;left:-40px;width:220px;height:220px;border-radius:50%;background:rgba(56,182,232,0.06);pointer-events:none}
.post-header-inner{max-width:820px;margin:0 auto;position:relative;z-index:1}
.post-reading-bar{position:fixed;top:0;left:0;height:3px;background:linear-gradient(90deg,var(--sky),var(--sky-dark));z-index:9999;transition:width 0.1s linear;width:0%}

/* ---- AUTHOR BAR ---- */
.post-author-bar{display:flex;align-items:center;gap:12px;padding:14px 0;border-bottom:1px solid var(--sky-light);margin-bottom:24px}
.post-author-bar img{border-radius:50%;border:2px solid var(--sky);flex-shrink:0}
.post-author-name{font-weight:700;color:var(--dark);font-size:0.9rem}
.post-author-meta{font-size:0.78rem;color:var(--gray)}
.post-date-updated{margin-left:auto;font-size:0.76rem;color:var(--gray-light);text-align:right;display:flex;flex-direction:column;gap:2px}

/* ---- LAYOUT ---- */
.post-layout{display:grid;grid-template-columns:1fr 300px;gap:36px;align-items:start;max-width:1140px;margin:0 auto;padding:0 20px}
.post-content-col{min-width:0}
.post-sidebar-col{position:sticky;top:80px}

/* ---- TOC ---- */
.post-toc{background:var(--sky-ultra);border:1.5px solid var(--sky-light);border-radius:var(--radius);padding:20px 22px;margin-bottom:28px}
.post-toc summary{font-family:var(--font-main);font-size:0.95rem;font-weight:700;color:var(--dark);cursor:pointer;list-style:none;display:flex;align-items:center;gap:8px}
.post-toc summary::-webkit-details-marker{display:none}
.post-toc ol{margin:12px 0 0 18px}
.post-toc li{font-size:0.85rem;margin-bottom:5px;line-height:1.5}
.post-toc a{color:var(--sky-dark);text-decoration:none;font-weight:500}
.post-toc a:hover{text-decoration:underline}

/* ---- CONTENT TYPOGRAPHY ---- */
.post-body h2{font-family:var(--font-main);font-size:1.5rem;color:var(--dark);margin:40px 0 16px;padding-bottom:10px;border-bottom:2px solid var(--sky-light);display:flex;align-items:center;gap:10px}
.post-body h2 .h2-icon{width:32px;height:32px;background:var(--sky-light);border-radius:8px;display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;font-size:0.9rem}
.post-body h3{font-family:var(--font-main);font-size:1.15rem;color:var(--dark2);margin:28px 0 10px;padding-left:12px;border-left:3px solid var(--sky)}
.post-body h4{font-family:var(--font-main);font-size:1rem;color:var(--sky-dark);margin:20px 0 8px}
.post-body p{font-size:1rem;line-height:1.85;color:#2d3748;margin-bottom:18px}
.post-body ul,.post-body ol{margin:14px 0 20px 0;padding:0}
.post-body ul li,.post-body ol li{font-size:0.97rem;line-height:1.75;color:#2d3748;margin-bottom:8px;padding-left:28px;position:relative}
.post-body ul li::before{content:'▸';position:absolute;left:6px;color:var(--sky);font-size:0.75rem;top:4px}
.post-body ol{counter-reset:ol-counter}
.post-body ol li::before{content:counter(ol-counter);counter-increment:ol-counter;position:absolute;left:0;width:20px;height:20px;background:var(--sky-dark);color:#fff;border-radius:50%;font-size:0.7rem;font-weight:700;display:flex;align-items:center;justify-content:center;top:2px}
.post-body a{color:var(--sky-dark);text-decoration:underline;text-underline-offset:3px}
.post-body a:hover{color:var(--sky)}
.post-body strong{color:var(--dark)}
.post-body blockquote{border-left:4px solid var(--sky);background:var(--sky-ultra);padding:16px 20px;border-radius:0 var(--radius) var(--radius) 0;margin:24px 0;font-style:italic;color:var(--gray)}

/* ---- CALLOUT BOXES ---- */
.callout{border-radius:var(--radius);padding:18px 20px;margin:24px 0;display:flex;gap:14px;align-items:flex-start}
.callout-icon{font-size:1.3rem;flex-shrink:0;margin-top:2px}
.callout-body{flex:1}
.callout-body strong{display:block;margin-bottom:4px;font-size:0.9rem;font-weight:700}
.callout-body p{margin:0;font-size:0.9rem;line-height:1.65;color:var(--gray)}
.callout.tip{background:linear-gradient(135deg,#e0f5fd,#f0faff);border:1.5px solid var(--sky)}
.callout.tip .callout-body strong{color:var(--sky-dark)}
.callout.warning{background:#fff7ed;border:1.5px solid #fb923c}
.callout.warning .callout-body strong{color:#c2410c}
.callout.success{background:#f0fdf4;border:1.5px solid #86efac}
.callout.success .callout-body strong{color:#15803d}
.callout.cta{background:linear-gradient(135deg,var(--dark),var(--sky-dark));color:#fff;border:none}
.callout.cta .callout-body p{color:rgba(255,255,255,0.88)}
.callout.cta .callout-body strong{color:#fff}

/* ---- VISUAL CARDS (stat/feature blocks) ---- */
.visual-grid{display:grid;gap:16px;margin:24px 0}
.visual-grid.cols-2{grid-template-columns:1fr 1fr}
.visual-grid.cols-3{grid-template-columns:repeat(3,1fr)}
.visual-grid.cols-4{grid-template-columns:repeat(4,1fr)}
.v-card{background:#fff;border:1.5px solid var(--sky-light);border-radius:var(--radius);padding:18px 16px;text-align:center;transition:var(--transition)}
.v-card:hover{border-color:var(--sky);box-shadow:var(--shadow)}
.v-card-icon{width:44px;height:44px;background:var(--sky-light);border-radius:10px;display:flex;align-items:center;justify-content:center;margin:0 auto 10px;font-size:1.2rem}
.v-card-num{font-family:var(--font-main);font-size:1.8rem;font-weight:800;color:var(--sky-dark);line-height:1}
.v-card-label{font-size:0.78rem;color:var(--gray);margin-top:4px;line-height:1.4}
.v-card-desc{font-size:0.82rem;color:var(--gray);margin-top:8px;line-height:1.55}
.v-card.highlight{background:var(--sky-dark);border-color:var(--sky-dark);color:#fff}
.v-card.highlight .v-card-icon{background:rgba(255,255,255,0.15)}
.v-card.highlight .v-card-num,.v-card.highlight .v-card-label,.v-card.highlight .v-card-desc{color:#fff}

/* ---- COMPARISON TABLE ---- */
.post-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:0.9rem;border-radius:var(--radius);overflow:hidden;box-shadow:0 2px 12px rgba(0,0,0,0.06)}
.post-body table thead tr{background:var(--sky-dark);color:#fff}
.post-body table th{padding:12px 14px;text-align:left;font-weight:700;font-size:0.82rem;letter-spacing:0.3px}
.post-body table td{padding:10px 14px;border-bottom:1px solid var(--sky-light);color:#2d3748;vertical-align:top}
.post-body table tr:last-child td{border-bottom:none}
.post-body table tbody tr:nth-child(even){background:var(--sky-ultra)}
.post-body table tbody tr:hover{background:#e8f6fd}
.td-check{color:#16a34a;font-size:1rem}
.td-cross{color:#dc2626;font-size:1rem}

/* ---- STEP PROCESS ---- */
.step-list{list-style:none;margin:20px 0;padding:0}
.step-item{display:flex;gap:16px;margin-bottom:20px;align-items:flex-start}
.step-num{width:36px;height:36px;background:var(--sky-dark);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-family:var(--font-main);font-weight:700;font-size:1rem;flex-shrink:0}
.step-body{flex:1;padding-top:4px}
.step-body strong{display:block;font-size:0.95rem;color:var(--dark);margin-bottom:4px}
.step-body p{font-size:0.88rem;color:var(--gray);line-height:1.6;margin:0}

/* ---- CHECKLIST ---- */
.checklist{list-style:none;margin:16px 0;padding:0}
.checklist li{padding:8px 12px 8px 44px;position:relative;font-size:0.92rem;color:var(--gray);border-bottom:1px solid var(--sky-light);line-height:1.55}
.checklist li:last-child{border-bottom:none}
.checklist li::before{content:'✓';position:absolute;left:12px;color:#16a34a;font-weight:700;font-size:1rem}
.checklist li.warn::before{content:'⚠';color:#d97706}
.checklist li.fail::before{content:'✗';color:#dc2626}
.checklist-wrap{background:#fff;border:1.5px solid var(--sky-light);border-radius:var(--radius);padding:6px 0;margin:20px 0}

/* ---- INLINE STAT BAR ---- */
.stat-bar-row{display:flex;align-items:center;gap:12px;margin:8px 0}
.stat-bar-label{font-size:0.82rem;color:var(--gray);min-width:140px}
.stat-bar-track{flex:1;height:8px;background:var(--sky-light);border-radius:4px;overflow:hidden}
.stat-bar-fill{height:100%;border-radius:4px;background:linear-gradient(90deg,var(--sky),var(--sky-dark))}
.stat-bar-val{font-size:0.82rem;font-weight:700;color:var(--sky-dark);min-width:36px;text-align:right}

/* ---- KEYWORD PILL ---- */
.kw-pill{display:inline-block;background:var(--sky-light);color:var(--sky-dark);font-size:0.75rem;font-weight:700;padding:3px 10px;border-radius:20px;margin:2px}

/* ---- INTERNAL LINK BOX ---- */
.related-read{background:var(--sky-ultra);border:1.5px solid var(--sky-light);border-radius:var(--radius);padding:14px 18px;margin:24px 0;display:flex;align-items:center;gap:12px}
.related-read i{color:var(--sky);font-size:1.1rem;flex-shrink:0}
.related-read-body{flex:1}
.related-read-body span{font-size:0.75rem;font-weight:700;color:var(--sky);text-transform:uppercase;letter-spacing:1px}
.related-read-body a{display:block;font-weight:700;color:var(--dark);font-size:0.9rem;margin-top:2px}
.related-read-body a:hover{color:var(--sky-dark)}
.related-read-body a::after{content:' →'}

/* ---- SHARE BUTTONS ---- */
.post-share{display:flex;gap:8px;flex-wrap:wrap;margin:32px 0;padding:18px 20px;background:var(--sky-ultra);border-radius:var(--radius);align-items:center}
.share-label{font-weight:700;font-size:0.85rem;color:var(--dark)}
.share-btn{display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border-radius:20px;font-size:0.8rem;font-weight:700;color:#fff;text-decoration:none;border:none;cursor:pointer;font-family:var(--font-body);transition:filter 0.2s}
.share-btn:hover{filter:brightness(1.1)}
.share-btn.wa{background:#25d366}
.share-btn.li{background:#0077b5}
.share-btn.cp{background:var(--gray-light)}

/* ---- AUTHOR BIO ---- */
.post-author-bio{display:flex;gap:18px;align-items:flex-start;background:#fff;border:1.5px solid var(--sky-light);border-radius:var(--radius);padding:22px;margin:32px 0}
.post-author-bio img{border-radius:50%;border:3px solid var(--sky);flex-shrink:0}
.bio-role{font-size:0.78rem;color:var(--sky-dark);margin-bottom:6px;font-weight:600}
.bio-text{font-size:0.87rem;color:var(--gray);line-height:1.65;margin-bottom:10px}

/* ---- SIDEBAR ---- */
.sidebar-card{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;border:1px solid var(--sky-light);margin-bottom:18px}
.sidebar-card h3{font-family:var(--font-main);font-size:0.95rem;margin-bottom:14px;color:var(--dark);display:flex;align-items:center;gap:8px}
.sidebar-post-link{display:flex;gap:10px;align-items:flex-start;padding:8px 0;border-bottom:1px solid var(--sky-light);text-decoration:none}
.sidebar-post-link:last-child{border-bottom:none}
.sidebar-post-num{width:22px;height:22px;background:var(--sky-light);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:0.68rem;font-weight:700;color:var(--sky-dark);flex-shrink:0;margin-top:2px}
.sidebar-post-link span{font-size:0.83rem;color:var(--dark);line-height:1.4;font-weight:500}
.sidebar-post-link:hover span{color:var(--sky-dark)}
.sidebar-cta{background:linear-gradient(135deg,var(--sky-dark),var(--dark));color:#fff;border-radius:var(--radius);padding:22px}
.sidebar-cta h3{color:#fff;margin-bottom:8px}
.sidebar-cta p{font-size:0.83rem;opacity:0.88;margin-bottom:14px;line-height:1.6}

/* ---- BLOG LISTING (index.php) ---- */
.blog-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px}
.blog-card{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;border:1px solid var(--sky-light);display:flex;flex-direction:column;transition:var(--transition)}
.blog-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.blog-card-thumb{height:190px;background:var(--sky-light);overflow:hidden;display:block}
.blog-card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 0.4s ease}
.blog-card:hover .blog-card-thumb img{transform:scale(1.04)}
.blog-card-thumb-placeholder{height:190px;background:linear-gradient(135deg,var(--sky-light),var(--sky-ultra));display:flex;align-items:center;justify-content:center}
.blog-card-body{padding:20px;flex:1;display:flex;flex-direction:column}
.blog-cat-tag{display:inline-block;background:var(--sky-light);color:var(--sky-dark);font-size:0.7rem;font-weight:700;padding:2px 10px;border-radius:20px;text-transform:uppercase;margin-bottom:10px}
.blog-card-title{font-family:var(--font-main);font-size:1.02rem;font-weight:700;color:var(--dark);margin-bottom:8px;line-height:1.4;flex:1}
.blog-card-title a{color:inherit}
.blog-card-title a:hover{color:var(--sky-dark)}
.blog-card-excerpt{font-size:0.83rem;color:var(--gray);line-height:1.6;margin-bottom:14px}
.blog-card-meta{display:flex;flex-wrap:wrap;gap:10px;font-size:0.76rem;color:var(--gray-light)}
.blog-card-meta i{color:var(--sky);margin-right:3px}
.blog-read-more{display:inline-flex;align-items:center;gap:5px;font-size:0.83rem;font-weight:700;color:var(--sky-dark);margin-top:12px}
.blog-read-more i{transition:transform 0.2s}
.blog-read-more:hover i{transform:translateX(4px)}
.blog-tag-btn{display:inline-block;padding:5px 14px;border-radius:20px;font-size:0.8rem;font-weight:600;background:#fff;color:var(--dark);border:1.5px solid var(--sky-light);text-decoration:none;transition:var(--transition)}
.blog-tag-btn:hover,.blog-tag-btn.active{background:var(--sky);color:#fff;border-color:var(--sky)}
.blog-sidebar-card{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;border:1px solid var(--sky-light)}

/* ---- POST FOOTER CTA ---- */
.post-cta-block{background:linear-gradient(135deg,var(--dark) 0%,var(--sky-dark) 100%);color:#fff;border-radius:var(--radius-lg);padding:36px 32px;text-align:center;margin:36px 0}
.post-cta-block h3{font-family:var(--font-main);font-size:1.4rem;margin-bottom:8px}
.post-cta-block p{opacity:0.88;margin-bottom:22px;font-size:0.95rem}
.post-cta-btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* ---- READING PROGRESS ---- */
@keyframes progressPulse{0%,100%{opacity:1}50%{opacity:0.7}}

/* ---- RESPONSIVE ---- */
@media(max-width:960px){
  .post-layout{grid-template-columns:1fr;padding:0 16px}
  .post-sidebar-col{position:static}
  .visual-grid.cols-4{grid-template-columns:1fr 1fr}
  .visual-grid.cols-3{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
  .blog-post-header{padding:36px 0 28px}
  .post-body h2{font-size:1.25rem}
  .post-body h3{font-size:1.05rem}
  .post-body p{font-size:0.95rem}
  .visual-grid.cols-2,.visual-grid.cols-3,.visual-grid.cols-4{grid-template-columns:1fr}
  .post-author-bar{flex-wrap:wrap}
  .post-date-updated{margin-left:0}
  .post-cta-block{padding:24px 18px}
  .post-cta-block h3{font-size:1.15rem}
  .post-author-bio{flex-direction:column}
}