/* Modernist design tokens, from the Claude Design handoff (site/source/_ds/.../styles.css) */
@font-face{font-family:"Vazirmatn";src:url(../fonts/vazirmatn.woff2) format("woff2");font-weight:100 900;font-style:normal;font-display:swap}
@font-face{font-family:"Archivo";src:url(../fonts/archivo-latin.woff2) format("woff2");font-weight:100 900;font-style:normal;font-display:swap;unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-200B,U+2010-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
:root{
  --color-bg:#f3f2f2;--color-surface:#eae9e9;--color-text:#201e1d;--color-accent:#ec3013;
  --color-divider:color-mix(in srgb,#201e1d 40%,transparent);
  --color-neutral-100:#f8f4f4;--color-neutral-300:#d7d3d3;--color-neutral-700:#605d5d;--color-neutral-800:#444141;
  --color-accent-100:#fff2ef;--color-accent-600:#dd2b0f;--color-accent-700:#ae1800;--color-accent-800:#7c1405;
  --font:"Archivo","Vazirmatn",system-ui,sans-serif;
  --gutter:48px;
  color-scheme:light;
}
*,*::before,*::after{box-sizing:border-box}
html{background:var(--color-bg)}
body{margin:0;background:var(--color-bg);color:var(--color-text);font-family:var(--font);font-size:16px;line-height:1.7}
h1,h2,h3,h4{font-family:var(--font);font-weight:800;letter-spacing:0;margin:0}
p{margin:0 0 16px}
a{color:var(--color-accent-700);text-underline-offset:3px}
a:hover{color:var(--color-accent)}
img{display:block;max-width:100%}
:focus{outline:none}
:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}
::selection{background:color-mix(in srgb,var(--color-accent) 30%,transparent)}
.grayscale{filter:grayscale(1) contrast(1.08)}
.muted{color:var(--color-neutral-700)}
[hidden]{display:none!important}
.post-tags{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:40px;padding-top:20px;border-top:1px solid var(--color-divider);font-size:14px}
.post-tags .tag{text-decoration:none}
.post-tags .tag:hover{background:var(--color-accent-100);color:var(--color-accent-800)}
.tag-filter{margin:0;padding:14px var(--gutter);font-size:15px;border-bottom:1px solid var(--color-divider)}
.tag-filter a{margin-right:12px;font-size:14px}
.kicker{font-size:13px;font-weight:600;color:var(--color-accent-700)}
.wrap{max-width:1280px;margin:0 auto}
.plain{color:inherit;text-decoration:none}
.plain:hover{color:var(--color-accent)}
.rule{border-top:2px solid var(--color-divider)}
.rule-b{border-bottom:2px solid var(--color-divider)}

/* components */
.btn{display:inline-flex;align-items:center;gap:12px;cursor:pointer;text-decoration:none;font:800 15px/1.2 var(--font);color:var(--color-text);background:transparent;border:1px solid var(--color-divider);padding:10px 14px;border-radius:0}
.btn svg{display:block;margin-right:auto}
.btn-primary{background:var(--color-accent);color:var(--color-bg);border-color:transparent;padding:13px 16px;min-width:220px}
.btn-primary:hover{background:var(--color-accent-600);color:var(--color-bg)}
.btn-secondary:hover{background:color-mix(in srgb,var(--color-text) 7%,transparent)}
.btn-icon{width:44px;height:44px;padding:0;justify-content:center;border:0;min-width:0}
.tag{display:inline-flex;align-items:center;font-size:12px;padding:3px 10px}
.tag-accent{background:var(--color-accent-100);color:var(--color-accent-800)}
.tag-neutral{background:var(--color-neutral-100);color:var(--color-neutral-800);font-size:14px;padding:6px 12px}
.input{width:100%;min-height:44px;padding:8px 10px;font:inherit;font-size:15px;color:var(--color-text);background:var(--color-surface);border:1px solid var(--color-divider);border-radius:0}
.input:focus-visible{border-color:var(--color-accent);outline-offset:0}
textarea.input{min-height:160px;resize:vertical}
.field>label{display:block;font-size:12px;margin-bottom:5px;color:var(--color-neutral-800)}
.seg{display:inline-flex;flex-wrap:wrap;border:1px solid var(--color-divider)}
.seg button{font:inherit;font-size:13px;padding:7px 12px;background:none;border:0;border-left:1px solid var(--color-divider);cursor:pointer;color:inherit}
.seg button:last-child{border-left:0}
.seg button[aria-pressed=true]{background:var(--color-accent);color:var(--color-bg)}
table{width:100%;border-collapse:collapse;font-size:15px;margin:8px 0 28px}
th{text-align:right;font-size:12px;color:var(--color-neutral-700);padding:8px;border-bottom:2px solid var(--color-divider)}
td{padding:8px;border-bottom:1px solid var(--color-divider)}

/* nav */
.nav{display:flex;align-items:stretch;gap:28px;padding:0 var(--gutter);border-bottom:2px solid var(--color-divider)}
.brand{display:flex;flex-direction:column;justify-content:center;padding:16px 0;margin-left:auto;color:inherit;text-decoration:none;line-height:1.5}
.brand b{font-weight:800;font-size:19px}
.brand span{font-size:12px;color:var(--color-neutral-700)}
.nav-links{display:flex;gap:28px}
.nav-links a{display:flex;align-items:center;font-size:15px;color:inherit;text-decoration:none}
.nav-links a:hover{color:var(--color-accent)}
.nav-links a[aria-current=page]{font-weight:600;color:var(--color-accent);border-bottom:3px solid var(--color-accent);margin-bottom:-2px}
.menu-btn{display:none}
.menu{display:none}
.progress{height:3px;background:var(--color-neutral-300)}
.progress div{height:3px;width:0;background:var(--color-accent)}

/* grids */
.split{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr)}
.split>*:first-child{border-left:1px solid var(--color-divider)}
.pad{padding:40px var(--gutter)}
.page-head{padding:56px var(--gutter) 28px}
.page-head h1{font-size:56px;line-height:1.3}
.page-head p{font-size:17px;margin:12px 0 0;color:var(--color-neutral-800)}

/* home */
.hero h1{font-size:64px;line-height:1.35;margin:16px 0 0;text-wrap:pretty}
.hero p{font-size:18px;line-height:1.9;max-width:640px;margin:24px 0 0}
.hero-text{padding:72px var(--gutter) 56px 40px}
.hero-photo{padding:40px 40px 40px var(--gutter);display:flex;flex-direction:column;gap:12px;font-size:12px;color:var(--color-neutral-700)}
.hero-photo img{width:100%;aspect-ratio:1/1;object-fit:cover}
.latest h2{font-size:40px;line-height:1.4;margin:16px 0 0}
.latest p{font-size:17px;line-height:1.9;margin:16px 0 0;max-width:620px}
.latest .btn{margin-top:24px}
.side-title{font-size:13px;font-weight:600;color:var(--color-accent-700);padding-bottom:10px;border-bottom:2px solid var(--color-divider)}
.topic{display:flex;padding:12px 0;border-bottom:1px solid var(--color-divider);color:inherit;text-decoration:none}
.topic span:last-child{margin-right:auto;color:var(--color-neutral-700)}
.section-head{display:flex;align-items:baseline;padding:28px 0 14px;border-bottom:2px solid var(--color-divider)}
.section-head h2{font-size:28px}
.section-head a{margin-right:auto;font-size:14px}
.row{display:grid;grid-template-columns:140px minmax(0,1fr) 200px 80px;gap:24px;padding:18px 0;border-bottom:1px solid var(--color-divider);align-items:baseline;color:inherit;text-decoration:none}
.row:hover .row-title{color:var(--color-accent)}
.row-title{font-size:20px;font-weight:600}
.small{font-size:13px;color:var(--color-neutral-700)}
.end{text-align:left}

/* blog list */
.filters{display:flex;gap:16px;align-items:center;padding:0 var(--gutter) 20px;border-bottom:2px solid var(--color-divider);flex-wrap:wrap}
.filters .input{max-width:280px;margin-right:auto}
.year{display:grid;grid-template-columns:200px minmax(0,1fr);padding:0 var(--gutter)}
.year+.year{border-top:2px solid var(--color-divider)}
.year:first-of-type .year-num{color:var(--color-accent)}
.year-num{font-size:40px;font-weight:800;padding:24px 0}
.entry{display:grid;grid-template-columns:110px minmax(0,1fr) 180px;gap:24px;padding:22px 0;border-bottom:1px solid var(--color-divider);align-items:baseline;color:inherit;text-decoration:none}
.entry b{display:block;font-size:22px;font-weight:800;line-height:1.6}
.entry:hover b{color:var(--color-accent)}
.entry .ex{display:block;font-size:15px;margin-top:6px;color:var(--color-neutral-800);line-height:1.8}
.empty{padding:24px var(--gutter);display:none}

/* article */
.post-head{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:48px;padding:56px var(--gutter) 32px;border-bottom:2px solid var(--color-divider)}
.post-head h1{font-size:52px;line-height:1.4;margin:12px 0 0;text-wrap:pretty}
.meta{align-self:end;border-top:2px solid var(--color-divider);font-size:14px}
.meta div{display:flex;padding:10px 0;border-bottom:1px solid var(--color-divider)}
.meta div span:last-child{margin-right:auto}
.post-body{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:48px;padding:40px var(--gutter) 56px}
.prose{max-width:700px;font-size:18px;line-height:2.05}
.prose>p:first-child{font-size:21px;font-weight:600;line-height:1.9}
.prose p{margin:0 0 24px}
.prose h2{font-size:28px;line-height:1.5;margin:40px 0 12px;padding-top:16px;border-top:2px solid var(--color-divider)}
.prose h3{font-size:22px;line-height:1.5;margin:32px 0 8px}
.prose blockquote{margin:32px 0;padding:20px 24px 20px 0;border-right:6px solid var(--color-accent);font-size:24px;font-weight:800;line-height:1.7}
.prose blockquote p{margin:0}
.prose ul,.prose ol{padding-right:22px;margin:0 0 24px}
.prose img{margin:24px 0}
.toc{border-top:2px solid var(--color-divider);position:sticky;top:16px}
.toc a{display:grid;grid-template-columns:28px 1fr;padding:10px 0;border-top:1px solid var(--color-divider);font-size:15px;color:inherit;text-decoration:none}
.toc a:hover{color:var(--color-accent)}
.share{display:flex;gap:8px;margin-top:32px;flex-wrap:wrap}
.post-foot{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);border-top:2px solid var(--color-divider)}
.post-foot>a{padding:24px var(--gutter) 28px 24px;border-left:1px solid var(--color-divider);color:inherit;text-decoration:none}
.post-foot>a b{display:block;font-size:20px;font-weight:800;margin-top:6px}
.author{padding:24px 24px 28px var(--gutter);display:grid;grid-template-columns:72px minmax(0,1fr);gap:16px;align-items:center}
.author img{width:72px;height:72px;object-fit:cover}

/* projects */
.ptable{padding:0 var(--gutter) 56px}
.prow{display:grid;grid-template-columns:60px minmax(0,5fr) minmax(0,3fr) 160px 100px;gap:24px;padding:22px 0;border-bottom:1px solid var(--color-divider);align-items:baseline}
.prow.head{font-size:12px;font-weight:600;color:var(--color-neutral-700);padding:0 0 10px;border-bottom:2px solid var(--color-divider)}
.prow .n{font-weight:800;color:var(--color-accent-700)}
.prow .t{font-size:22px;font-weight:800;line-height:1.6}

/* resume */
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:2px solid var(--color-divider);border-bottom:2px solid var(--color-divider)}
.stats>div{padding:20px 24px 24px;border-left:1px solid var(--color-divider)}
.stats>div:first-child{padding-right:var(--gutter)}
.stats>div:last-child{border-left:0}
.stats b{display:block;font-size:44px;font-weight:800;line-height:1.4}
.stats>div:first-child b{color:var(--color-accent)}
.rsec{display:grid;grid-template-columns:240px minmax(0,1fr);padding:0 var(--gutter)}
.rsec+.rsec{border-top:2px solid var(--color-divider)}
.rsec>h2{font-size:22px;padding:28px 0}
.job{display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:24px;padding:28px 0;border-bottom:1px solid var(--color-divider)}
.job:last-child{border-bottom:0}
.job b{display:block;font-size:22px;font-weight:800}
.job ul{margin:12px 0 0;padding-right:18px;font-size:15px;line-height:1.9}
.skills{display:flex;flex-wrap:wrap;gap:8px;padding:28px 0 48px;align-content:flex-start}

/* about & contact */
.about{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);border-bottom:2px solid var(--color-divider)}
.about>div:first-child{padding:40px var(--gutter) 40px 40px;border-left:1px solid var(--color-divider)}
.about img{width:100%;aspect-ratio:4/5;object-fit:cover}
.about>div:last-child{padding:56px 40px 48px var(--gutter)}
.about h1{font-size:52px;line-height:1.35}
.facts,.three{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:2px solid var(--color-divider)}
.facts{margin-top:32px;font-size:14px}
.facts>div,.three>div{padding:14px 16px 0}
.facts>div+div,.three>div+div{border-right:1px solid var(--color-divider)}
.facts>div:first-child,.three>div:first-child{padding-right:0}
.three b{display:block;font-size:20px;margin-top:6px}
.contact{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
.contact>div{padding:56px var(--gutter) 56px 40px;border-left:1px solid var(--color-divider)}
.contact h1{font-size:52px;line-height:1.35}
.channel{display:flex;align-items:baseline;padding:18px 0;border-bottom:1px solid var(--color-divider);color:inherit;text-decoration:none}
.channel span:first-child{font-size:14px;color:var(--color-neutral-700);width:100px;flex:none}
.channel span:last-child{font-size:22px;font-weight:800;overflow-wrap:anywhere}
.contact form{padding:56px 40px 56px var(--gutter);display:flex;flex-direction:column;gap:20px}

/* footer */
.foot{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;padding:24px var(--gutter);border-top:2px solid var(--color-divider);font-size:14px}
.foot a{color:inherit}
.foot .links{display:flex;gap:16px}

/* mobile (mockups 3a–3c) */
@media (max-width:860px){
  :root{--gutter:16px}
  .nav{padding:10px var(--gutter);align-items:center}
  .brand{padding:0}
  .brand span{display:none}
  .nav-links{display:none}
  .menu-btn{display:inline-flex}
  .menu[open]{display:flex}
  .menu{position:fixed;inset:0;z-index:10;background:var(--color-bg);flex-direction:column}
  .menu-top{display:flex;align-items:center;padding:10px var(--gutter);border-bottom:2px solid var(--color-divider)}
  .menu-top b{font-size:18px;margin-left:auto}
  .menu-links{display:flex;flex-direction:column;padding:8px var(--gutter)}
  .menu-links a{display:grid;grid-template-columns:40px 1fr;align-items:baseline;padding:16px 0;border-bottom:1px solid var(--color-divider);color:inherit;text-decoration:none;font-size:30px;font-weight:800}
  .menu-links a span{font-size:13px;font-weight:400;color:var(--color-neutral-700)}
  .menu-links a[aria-current=page]{color:var(--color-accent)}
  .menu-mail{margin-top:auto;background:var(--color-accent);color:var(--color-bg);padding:20px;display:flex;flex-direction:column;gap:6px;text-decoration:none}
  .menu-mail b{font-size:19px}
  .split,.post-head,.post-body,.about,.contact,.post-foot{grid-template-columns:minmax(0,1fr)}
  .split>*:first-child,.about>div:first-child,.contact>div,.post-foot>a{border-left:0}
  .hero-text{padding:32px var(--gutter) 28px}
  .hero h1{font-size:32px;line-height:1.5}
  .hero p{font-size:16px}
  .hero-photo{order:-1;padding:24px var(--gutter) 0;flex-direction:row;align-items:center}
  .hero-photo img{width:56px;height:56px}
  .latest h2{font-size:22px;line-height:1.55}
  .latest .btn{width:100%}
  .pad{padding:24px var(--gutter)}
  .page-head{padding:32px var(--gutter) 20px}
  .page-head h1,.post-head h1,.about h1,.contact h1{font-size:30px;line-height:1.6}
  .row{grid-template-columns:minmax(0,1fr);gap:4px;padding:16px 0}
  .row .row-title{font-size:17px;line-height:1.7}
  .row .end{display:none}
  .year{grid-template-columns:minmax(0,1fr)}
  .year-num{font-size:28px;padding:20px 0 0}
  .entry{grid-template-columns:minmax(0,1fr);gap:4px}
  .entry b{font-size:18px}
  .entry .end{text-align:right}
  .filters .input{max-width:none;margin:0}
  .post-head{gap:20px;padding:28px var(--gutter) 20px}
  .post-body{gap:24px;padding:20px var(--gutter) 32px}
  .prose{font-size:17px}
  .prose>p:first-child{font-size:18px}
  .prose h2{font-size:21px}
  .prose blockquote{font-size:20px;padding:4px 16px 4px 0;border-right-width:5px}
  .toc{position:static}
  .post-foot>a,.author{padding:20px var(--gutter)}
  .ptable{overflow-x:auto}
  .prow{grid-template-columns:40px minmax(0,1fr);gap:8px 16px}
  .prow>span:nth-child(n+3){grid-column:2;font-size:14px}
  .prow.head{display:none}
  .prow .t{font-size:18px}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stats>div,.stats>div:first-child{padding:16px var(--gutter);border-bottom:1px solid var(--color-divider)}
  .stats b{font-size:32px}
  .rsec{grid-template-columns:minmax(0,1fr)}
  .rsec>h2{padding:24px 0 0}
  .job{grid-template-columns:minmax(0,1fr);gap:4px}
  .job .end{text-align:right;order:-1}
  .about>div:first-child,.about>div:last-child,.contact>div,.contact form{padding:24px var(--gutter)}
  .facts,.three{grid-template-columns:minmax(0,1fr)}
  .facts>div+div,.three>div+div{border-right:0;border-top:1px solid var(--color-divider)}
  .facts>div,.three>div{padding:12px 0}
  .channel span:last-child{font-size:18px}
  .foot{grid-template-columns:minmax(0,1fr);gap:8px}
  .foot .end{text-align:right}
}

/* photo placeholder (until a photo is set in _config.yml → photo) */
.photo-ph{display:flex;align-items:center;justify-content:center;width:100%;background:var(--color-surface);border:1px dashed var(--color-divider);color:var(--color-neutral-700);font-size:13px}
.hero-photo .photo-ph{aspect-ratio:1/1}
.about .photo-ph{aspect-ratio:4/5}
.author .photo-ph{width:72px;height:72px}
@media (max-width:860px){.hero-photo .photo-ph{width:56px;height:56px;flex:none}.hero-photo .photo-ph span{display:none}}

/* tools (دفترچه‌ی عدد — ستون ابزارها) */
.tool{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr)}
.tool-form{display:flex;flex-direction:column;gap:20px;padding:40px var(--gutter) 48px 40px;border-left:1px solid var(--color-divider)}
.tool-form .num{direction:ltr;text-align:left;font-size:18px;font-variant-numeric:tabular-nums}
.tool-out{padding:40px 40px 48px var(--gutter)}
.tool-out>div{display:flex;align-items:baseline;gap:16px;padding:16px 0;border-bottom:1px solid var(--color-divider)}
.tool-out>div span{font-size:15px;color:var(--color-neutral-800)}
.tool-out>div b{margin-right:auto;font-size:24px;font-weight:800;font-variant-numeric:tabular-nums}
.tool-out>.big{flex-direction:column;align-items:flex-start;gap:4px;border-top:2px solid var(--color-divider);border-bottom-width:2px}
.tool-out>.big b{margin:0;font-size:64px;line-height:1.3;color:var(--color-accent)}
.tool-out b.neg{color:var(--color-accent-700)}
.tool-out .note{margin:20px 0 0;font-size:15px;color:var(--color-neutral-800)}
.tool-method{padding:28px var(--gutter) 56px}
.tool-method h2{font-size:22px;margin:0 0 12px}
.tool-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:2px solid var(--color-divider)}
.tool-card{display:flex;flex-direction:column;gap:10px;padding:28px var(--gutter) 36px 24px;color:inherit;text-decoration:none;border-left:1px solid var(--color-divider)}
.tool-card:last-child{border-left:0}
.tool-card .n{font-size:13px;font-weight:600;color:var(--color-accent-700)}
.tool-card b{font-size:24px;line-height:1.5}
.tool-card span{font-size:15px;line-height:1.9;color:var(--color-neutral-800)}
.tool-card .go{margin-top:auto;font-weight:600;color:var(--color-accent-700)}
.tool-card:hover b{color:var(--color-accent)}

/* home: three columns */
.cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-bottom:2px solid var(--color-divider)}
.col{padding:32px 24px 40px;border-left:1px solid var(--color-divider);display:flex;flex-direction:column}
.col:first-child{padding-right:var(--gutter)}
.col:last-child{border-left:0;padding-left:var(--gutter)}
.col h2{font-size:28px;margin:6px 0 8px}
.col h2 a{color:inherit;text-decoration:none}
.col h2 a:hover{color:var(--color-accent)}
.col>p{font-size:15px;line-height:1.9;color:var(--color-neutral-800);margin:0 0 16px}
.col .item{display:block;padding:12px 0;border-top:1px solid var(--color-divider);color:inherit;text-decoration:none;font-weight:600;line-height:1.7}
.col .item small{display:block;font-weight:400;font-size:12px;color:var(--color-neutral-700)}
.col .item:hover{color:var(--color-accent)}
.col .soon{padding:12px 0;border-top:1px solid var(--color-divider);font-size:14px;color:var(--color-neutral-700)}
.col .more{margin-top:auto;padding-top:16px;font-size:14px;font-weight:600}
.demo{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);border-bottom:2px solid var(--color-divider)}
.demo>div:first-child{padding:40px var(--gutter) 40px 40px;border-left:1px solid var(--color-divider)}
.demo h2{font-size:32px;line-height:1.5;margin:8px 0 12px}

@media (max-width:860px){
  .tool,.demo{grid-template-columns:minmax(0,1fr)}
  .tool-form,.demo>div:first-child{padding:24px var(--gutter);border-left:0}
  .tool-out{padding:8px var(--gutter) 32px}
  .tool-out>.big b{font-size:44px}
  .tool-out>div b{font-size:19px}
  .tool-list,.cols{grid-template-columns:minmax(0,1fr)}
  .tool-card,.col,.col:first-child,.col:last-child{padding:24px var(--gutter);border-left:0;border-bottom:1px solid var(--color-divider)}
  .demo h2{font-size:24px}
}
.tool-method .prose>p:first-child{font-size:inherit;font-weight:400;line-height:inherit}
@media (max-width:860px){.tool-out>.big b{font-size:34px}}
.tool-group>h2{font-size:22px;padding:28px var(--gutter) 12px}
.tool-group .tool-list{border-top:2px solid var(--color-divider);border-bottom:2px solid var(--color-divider)}
.tool-card{border-bottom:1px solid var(--color-divider)}
.tool-card:last-child{border-left:1px solid var(--color-divider)}
.tool-card:nth-child(3n){border-left:0}
@media (max-width:860px){.tool-card:last-child{border-left:0}}