/* Ravix default theme. It depends only on the --rv-* variables; the values below are just safe defaults (zero specificity). */
:where(:root){
  --rv-primary:#1d4ed8;--rv-on-primary:#fff;--rv-primary-soft:#eef3fd;--rv-bg:#fff;--rv-surface:#f4f5f7;
  --rv-border:#d6d9df;--rv-text:#1b1f27;--rv-muted:#505763;
  --rv-font:'Vazirmatn',Tahoma,sans-serif;--rv-font-size:17px;
}
:root{--measure:42rem;--wide:70rem;--gap:clamp(1rem,3vw,2rem);--radius:6px}

*,*::before,*::after{box-sizing:border-box}
html{font-size:var(--rv-font-size);-webkit-text-size-adjust:100%;scroll-padding-top:5rem}
body{margin:0;background:var(--rv-bg);color:var(--rv-text);font-family:var(--rv-font);line-height:1.9;
  min-height:100vh;display:flex;flex-direction:column;text-rendering:optimizeLegibility}
html:not(:lang(fa)):not(:lang(ar)) body{line-height:1.7}
main{flex:1 0 auto;padding-block:clamp(1.5rem,4vw,3rem)}
main:focus{outline:none}
img{max-width:100%;height:auto;display:block}
h1,h2,h3{line-height:1.45;margin:0 0 .6em;font-weight:800;text-wrap:balance}
p{margin:0 0 1em}
a{color:var(--rv-primary);text-underline-offset:.2em;text-decoration-thickness:1px}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--rv-primary);outline-offset:3px;border-radius:2px}
ul,ol{padding-inline-start:1.4em}
.plain,.chips,.meta,.pager ul,.site-nav ul,.crumbs ol,.cat-list{list-style:none;padding:0;margin:0}
.container{width:min(100% - 2*var(--gap),var(--wide));margin-inline:auto}
.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip-link{position:absolute;inset-inline-start:1rem;top:-4rem;background:var(--rv-primary);color:var(--rv-on-primary);
  padding:.5rem 1rem;border-radius:var(--radius);z-index:100;transition:top .15s}
.skip-link:focus{top:.75rem}
.muted{color:var(--rv-muted)}

/* Buttons */
.btn{display:inline-block;background:var(--rv-primary);color:var(--rv-on-primary);border:2px solid var(--rv-primary);
  padding:.35rem 1.1rem;border-radius:var(--radius);font:inherit;font-weight:700;text-decoration:none;cursor:pointer;line-height:1.7}
.btn:hover{filter:brightness(.92);text-decoration:none}
.btn-quiet{background:transparent;color:var(--rv-primary)}
.btn-quiet:hover{background:var(--rv-primary-soft);filter:none}
.btn-lg{padding:.55rem 1.6rem;font-size:1.05rem}
.more{font-weight:700}

/* Header */
.site-header{background:var(--rv-bg);border-bottom:1px solid var(--rv-border)}
.site-header.is-sticky{position:sticky;top:0;z-index:20}
.header-inner{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem 1.5rem;padding-block:.75rem}
.brand{display:flex;align-items:center;gap:.6rem;text-decoration:none;color:var(--rv-text)}
.brand-name{font-size:1.45rem;font-weight:900;letter-spacing:-.01em}
.brand-logo{max-height:2.5rem;width:auto}
.brand-tagline{color:var(--rv-muted);font-size:.88rem;padding-inline-start:1.25rem;border-inline-start:2px solid var(--rv-border)}
.site-nav{margin-inline-start:auto}
.site-nav ul{display:flex;flex-wrap:wrap;gap:.25rem}
.site-nav a{display:block;padding:.3rem .75rem;color:var(--rv-text);text-decoration:none;border-radius:var(--radius);font-weight:600}
.site-nav a:hover{background:var(--rv-primary-soft)}
.site-nav a[aria-current=page]{color:var(--rv-primary);box-shadow:inset 0 -3px 0 var(--rv-primary);border-radius:0}
.header-tools{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem}
.site-nav + .header-tools{margin-inline-start:0}
.brand ~ .header-tools:last-child{margin-inline-start:auto}

/* Search */
.search-form{display:flex;gap:.35rem}
.search-form input{font:inherit;color:var(--rv-text);background:var(--rv-bg);border:1px solid var(--rv-border);border-radius:var(--radius);
  padding:.3rem .75rem;min-width:0;width:11rem}
.search-form input:focus{border-color:var(--rv-primary)}
.search-form-lg{max-width:32rem;margin-block:1rem 1.5rem}
.search-form-lg input{flex:1;width:auto;padding:.5rem 1rem}

/* Breadcrumbs and headings */
.crumbs{margin-bottom:1.25rem;font-size:.88rem}
.crumbs ol{display:flex;flex-wrap:wrap;gap:.25rem .5rem;color:var(--rv-muted)}
.crumbs li+li::before{content:"‹";margin-inline-end:.5rem}
.crumbs a{color:var(--rv-muted)}
.page-head{padding-bottom:1rem;margin-bottom:1.5rem;border-bottom:2px solid var(--rv-text)}
.page-head h1{font-size:clamp(1.7rem,4vw,2.4rem);margin-bottom:.25em}
.page-head p{margin-bottom:.25em}
.page-lead{font-size:1.1rem;max-width:var(--measure)}
.sub-head{font-size:1.2rem;margin-top:2rem}

/* Home page hero */
.hero{background:var(--rv-primary-soft);border-bottom:1px solid var(--rv-border);margin-block:calc(-1*clamp(1.5rem,4vw,3rem)) 0;padding-block:clamp(2.5rem,8vw,5.5rem)}
.hero-inner{max-width:46rem;padding-inline-start:clamp(1rem,3vw,2rem);border-inline-start:6px solid var(--rv-primary)}
.hero-title{font-size:clamp(2rem,6vw,3.6rem);font-weight:900;line-height:1.3;margin-bottom:.35em}
.hero-sub{font-size:clamp(1.05rem,2.2vw,1.35rem);color:var(--rv-muted);max-width:36rem}
.hero-body{max-width:36rem}

/* Sections */
.band{padding-block:clamp(1.75rem,5vw,3.25rem)}
.band + .band{border-top:1px solid var(--rv-border)}
.hero + .band{border-top:0}
.band-head{display:flex;align-items:baseline;justify-content:space-between;gap:1rem;margin-bottom:1.25rem}
.band-head h2{font-size:1.6rem;margin:0}

/* Featured post */
.lead{display:grid;gap:var(--gap);margin-bottom:var(--gap)}
.lead.has-media{grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);align-items:center}
.lead-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius);background:var(--rv-surface)}
.lead-title{font-size:clamp(1.5rem,3.4vw,2.2rem);font-weight:900;margin-bottom:.4em}
.lead-title a,.row-title a{color:var(--rv-text);text-decoration:none}
.lead-title a:hover,.row-title a:hover{color:var(--rv-primary);text-decoration:underline}
.lead-excerpt{color:var(--rv-muted);font-size:1.05rem}

/* Horizontal post list */
.river{display:grid;gap:0}
.river-two{grid-template-columns:repeat(2,minmax(0,1fr));column-gap:var(--gap)}
.row{display:grid;gap:1rem;padding-block:1.25rem;border-top:1px solid var(--rv-border)}
.row.has-media{grid-template-columns:9.5rem minmax(0,1fr)}
.row-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius);background:var(--rv-surface)}
.row-title{font-size:1.2rem;font-weight:800;margin-bottom:.25em}
.row-excerpt{color:var(--rv-muted);font-size:.95rem;margin-bottom:.4em;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.meta{display:flex;flex-wrap:wrap;gap:.1rem 1rem;font-size:.85rem;color:var(--rv-muted)}
.meta li+li::before{content:"";display:inline-block;width:4px;height:4px;border-radius:50%;background:var(--rv-border);margin-inline-end:1rem;vertical-align:middle}
.chips{display:flex;flex-wrap:wrap;gap:.35rem;margin-bottom:.5rem}
.chips a{display:inline-block;padding:0 .7rem;font-size:.82rem;font-weight:600;text-decoration:none;color:var(--rv-primary);
  background:var(--rv-primary-soft);border-radius:999px}
.chips a:hover{background:var(--rv-primary);color:var(--rv-on-primary)}
.cat-nav{margin-bottom:1.5rem}

/* Category list */
.cat-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(15rem,1fr));gap:var(--gap)}
.cat-list a{display:block;height:100%;padding:1rem 1.25rem;color:var(--rv-text);text-decoration:none;background:var(--rv-surface);
  border-inline-start:4px solid var(--rv-primary);border-radius:var(--radius)}
.cat-list a:hover{background:var(--rv-primary-soft)}
.cat-list strong{display:block;font-size:1.1rem}
.cat-list span{color:var(--rv-muted);font-size:.85rem}
.cat-list small{display:block;margin-top:.35rem;color:var(--rv-muted);line-height:1.7}

/* Article and static page */
.article{max-width:var(--measure);margin-inline:auto}
.article-head h1{font-size:clamp(1.8rem,4.5vw,2.7rem);font-weight:900}
.article-lead{font-size:1.15rem;color:var(--rv-muted)}
.article-cover{margin:1.5rem calc(-1*var(--gap))}
.article-cover img{width:100%;max-height:30rem;object-fit:cover;border-radius:var(--radius)}
.article-foot{margin-top:2rem;padding-top:1rem;border-top:1px solid var(--rv-border)}
.updated{margin-top:2rem;font-size:.85rem}
.prose{font-size:1.06rem;line-height:2.05;overflow-wrap:anywhere}
.prose h2{font-size:1.5rem;margin-top:2em}
.prose h3{font-size:1.25rem;margin-top:1.6em}
.prose img{border-radius:var(--radius);margin-block:1.25rem}
.prose blockquote{margin:1.5rem 0;padding:.25rem 1.25rem;border-inline-start:4px solid var(--rv-primary);background:var(--rv-primary-soft);border-start-start-radius:0;border-end-start-radius:0;border-start-end-radius:var(--radius);border-end-end-radius:var(--radius)}
.prose code{unicode-bidi:isolate}
.prose pre,.prose code{font-family:ui-monospace,Consolas,monospace;font-size:.9em;direction:ltr;text-align:left}
.prose pre{background:var(--rv-surface);border:1px solid var(--rv-border);border-radius:var(--radius);padding:1rem;overflow-x:auto}
.prose :not(pre)>code{background:var(--rv-surface);padding:.1em .35em;border-radius:3px}
.prose table{border-collapse:collapse;width:100%;display:block;overflow-x:auto}
.prose th,.prose td{border:1px solid var(--rv-border);padding:.4rem .75rem;text-align:start}
.prose th{background:var(--rv-surface)}
.prose hr{border:0;border-top:1px solid var(--rv-border);margin-block:2rem}
.related{margin-top:3.5rem;padding-top:1.5rem;border-top:2px solid var(--rv-text)}
.related h2{font-size:1.35rem}

/* Pagination */
.pager{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:.75rem;margin-top:2rem}
.pager ul{display:flex;gap:.25rem}
.pager a,.pager span{display:inline-block;min-width:2.4rem;padding:.15rem .6rem;text-align:center;border-radius:var(--radius);text-decoration:none}
.pager a{border:1px solid var(--rv-border);color:var(--rv-text)}
.pager a:hover{border-color:var(--rv-primary);color:var(--rv-primary)}
.pager [aria-current=page]{background:var(--rv-primary);color:var(--rv-on-primary);font-weight:800}
.pager .gap{color:var(--rv-muted);padding-inline:.25rem}
.pager-step{font-weight:700}

/* States */
.empty-state,.error-box{max-width:34rem;margin-inline:auto;text-align:center;padding-block:3rem}
.empty-state{border:2px dashed var(--rv-border);border-radius:var(--radius);padding:2.5rem 1.5rem}
.error-code{font-size:clamp(4rem,14vw,7rem);font-weight:900;line-height:1;margin:0;color:var(--rv-primary)}
.error-box .search-form{margin-inline:auto}
.error-box{background:var(--rv-primary-soft);border:1px solid var(--rv-border);border-radius:calc(var(--radius)*2);padding:3rem 1.5rem;margin-block:3rem}
.error-box h1{margin:.5rem 0 .25rem}
.error-box p{margin-block:.5rem}
.error-box .error-actions{display:flex;flex-wrap:wrap;gap:.75rem;justify-content:center;margin-top:1.5rem}
.search-status{margin-bottom:1rem}
.link-list li{padding-block:.4rem;border-bottom:1px solid var(--rv-border)}

/* Footer */
.site-footer{flex-shrink:0;background:var(--rv-surface);border-top:1px solid var(--rv-border);margin-top:auto;font-size:.92rem}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(13rem,1fr));gap:var(--gap);padding-block:2.25rem}
.footer-name{font-size:1.2rem;font-weight:900;margin-bottom:.4rem}
.footer-head{font-weight:800;margin-bottom:.4rem}
.footer-contact{font-style:normal}
.site-footer a{color:var(--rv-text)}
.site-footer a:hover{color:var(--rv-primary)}
.site-footer li{padding-block:.1rem}
.footer-credit{padding-block:1rem;border-top:1px solid var(--rv-border);color:var(--rv-muted);font-size:.82rem}
.footer-credit{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.75rem}
.footer-credit p{margin:0}
.rv-lang{display:flex;align-items:center;gap:.4rem;margin:0}
.rv-lang select,.rv-lang button{font:inherit;font-size:.85rem;padding:.25rem .5rem;border:1px solid var(--rv-border);border-radius:6px;background:var(--rv-bg);color:var(--rv-text)}
.rv-lang button{cursor:pointer}
.rv-sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* Responsive */
@media (max-width:50rem){
  .lead.has-media{grid-template-columns:1fr}
  .river-two{grid-template-columns:1fr}
  .site-nav{margin-inline-start:0;width:100%;order:3;overflow-x:auto}
  .site-nav ul{flex-wrap:nowrap}
  .site-nav a{white-space:nowrap}
  .header-tools{margin-inline-start:auto}
  .brand-tagline{display:none}
  .article-cover{margin-inline:0}
}
@media (max-width:30rem){
  .row.has-media{grid-template-columns:6.5rem minmax(0,1fr);gap:.75rem}
  .search-form input{width:7.5rem}
  .search-form-lg input{width:auto}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
@media print{.site-header,.site-footer,.pager,.skip-link,#rv-toolbar{display:none!important}body{color:#000;background:#fff}a{color:inherit}}

/* Comments */
.comments{margin-top:3.5rem;padding-top:1.5rem;border-top:2px solid var(--rv-text)}
.comments h2{font-size:1.35rem}
.comments-count{color:var(--rv-muted);font-weight:400}
.comment-list,.comment-replies{list-style:none;margin:0;padding:0}
.comment-replies{margin-inline-start:1.25rem;padding-inline-start:1rem;border-inline-start:2px solid var(--rv-border)}
.comment{margin-top:1.25rem}
.comment-body{background:var(--rv-surface);border:1px solid var(--rv-border);padding:.9rem 1rem}
.comment-head{display:flex;gap:.75rem;align-items:baseline;flex-wrap:wrap;margin-bottom:.4rem}
.comment-head time{color:var(--rv-muted);font-size:.85em}
.comment-text{overflow-wrap:anywhere}
.comment-text blockquote{margin:.5rem 0;padding-inline-start:.75rem;border-inline-start:3px solid var(--rv-border);color:var(--rv-muted)}
.comment-reply,.comment-cancel{font-size:.9em}
.comment-notice{background:var(--rv-primary-soft);border:1px solid var(--rv-border);padding:.7rem 1rem}
.comment-error{color:#b3261e;margin:.3rem 0 0;font-size:.9em}
.comment-form{margin-top:2rem;max-width:40rem}
.comment-form .field{margin-bottom:1rem}
.comment-form label{display:block;margin-bottom:.3rem;font-weight:600}
.comment-form input[type=text],.comment-form input[type=email],.comment-form textarea{width:100%;box-sizing:border-box;padding:.6rem .75rem;font:inherit;color:var(--rv-text);background:var(--rv-bg);border:1px solid var(--rv-border)}
.cm-hp{position:absolute;inset-inline-start:-10000px;width:1px;height:1px;overflow:hidden}