@font-face { font-family:"Vazirmatn"; font-weight:400; src:url("/assets/fonts/vaz-400.woff2") format("woff2"); font-display:swap; }
@font-face { font-family:"Vazirmatn"; font-weight:500; src:url("/assets/fonts/vaz-500.woff2") format("woff2"); font-display:swap; }
@font-face { font-family:"Vazirmatn"; font-weight:600; src:url("/assets/fonts/vaz-600.woff2") format("woff2"); font-display:swap; }
@font-face { font-family:"Vazirmatn"; font-weight:700; src:url("/assets/fonts/vaz-700.woff2") format("woff2"); font-display:swap; }
@font-face { font-family:"Vazirmatn"; font-weight:800; src:url("/assets/fonts/vaz-800.woff2") format("woff2"); font-display:swap; }
:root{
  --accent:#2a93f0; --accent-2:#1d7fd6; --accent-soft:rgba(42,147,240,.10);
  --bg:#eef4fb; --panel:#ffffff; --panel-2:#f5f9fd; --bd:rgba(20,70,110,.12);
  --text:#122336; --text-2:#4a6275; --text-3:#76909f;
  --shadow:0 10px 30px rgba(20,60,100,.08);
}
@media (prefers-color-scheme: dark){
  :root{ --bg:#0a1420; --panel:#101d2e; --panel-2:#0c1726; --bd:#22304d; --text:#e6edf7; --text-2:#9db2c9; --text-3:#6f88a3; --accent-soft:rgba(74,168,255,.12); --shadow:0 10px 30px rgba(0,0,0,.3); }
}
*{box-sizing:border-box}
body{margin:0;font-family:"Vazirmatn",Tahoma,sans-serif;background:var(--bg);color:var(--text);line-height:1.9}
a{color:var(--accent);text-decoration:none}

.nav{position:sticky;top:0;z-index:20;background:var(--bg);border-bottom:1px solid var(--bd);backdrop-filter:blur(8px)}
.nav-inner{display:flex;justify-content:space-between;align-items:center;max-width:760px;margin:0 auto;padding:16px 18px}
.nav .brand{font-weight:800;font-size:16.5px;color:var(--text)}
.nav a.home{font-size:12.5px;color:var(--text-2);border:1px solid var(--bd);padding:7px 14px;border-radius:20px;font-weight:600}
.nav a.home:hover{border-color:var(--accent);color:var(--accent)}

.wrap{max-width:760px;margin:0 auto;padding:0 18px 70px}
.crumb{font-size:12px;color:var(--text-3);padding:18px 0 0;display:flex;gap:6px;flex-wrap:wrap}
.crumb a{color:var(--text-3);font-weight:600}
.crumb a:hover{color:var(--accent)}

/* ---- Listing hero ---- */
.hero{padding:44px 0 30px;text-align:center}
.hero h1{font-size:30px;font-weight:800;margin:0 0 10px}
.hero p{color:var(--text-2);font-size:14.5px;margin:0;max-width:480px;margin-inline:auto}

.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:18px;margin-top:8px}
.pcard{background:var(--panel);border:1px solid var(--bd);border-radius:18px;overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:transform .15s,box-shadow .15s}
.pcard:hover{transform:translateY(-3px);box-shadow:0 16px 34px rgba(20,60,100,.14)}
.pcard .thumb{aspect-ratio:16/10;background:linear-gradient(135deg,var(--accent-soft),transparent);position:relative;overflow:hidden}
.pcard .thumb img{width:100%;height:100%;object-fit:cover;display:block}
.pcard .thumb .noimg{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-size:34px;opacity:.35}
.pcard .body{padding:16px;display:flex;flex-direction:column;gap:8px;flex:1}
.pcard h2{font-size:15.5px;margin:0;font-weight:700;line-height:1.6}
.pcard p{font-size:13px;color:var(--text-2);margin:0;flex:1}
.pcard .meta{font-size:11px;color:var(--text-3);display:flex;gap:10px;margin-top:auto;padding-top:4px}
.empty{color:var(--text-3);padding:60px 20px;text-align:center;background:var(--panel);border:1px solid var(--bd);border-radius:18px;font-size:13.5px}

/* ---- Article ---- */
.art-head{padding:20px 0 0}
.art-tags{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:14px}
.art-tags .tag{font-size:11px;background:var(--accent-soft);color:var(--accent-2);padding:4px 12px;border-radius:20px;font-weight:600}
.post-title{font-size:29px;font-weight:800;margin:0 0 14px;line-height:1.5}
.post-meta{font-size:12.5px;color:var(--text-3);display:flex;gap:14px;flex-wrap:wrap;padding-bottom:22px;border-bottom:1px solid var(--bd);margin-bottom:24px}
.post-cover{width:100%;max-height:420px;object-fit:cover;border-radius:18px;margin-bottom:28px;box-shadow:var(--shadow)}

.toc{background:var(--panel-2);border:1px solid var(--bd);border-radius:14px;padding:16px 18px;margin-bottom:26px;font-size:13.5px;display:none}
.toc.show{display:block}
.toc-title{font-weight:700;margin-bottom:8px;display:flex;align-items:center;gap:6px}
.toc ol{margin:0;padding-inline-start:20px;color:var(--text-2)}
.toc a{color:var(--text-2)}
.toc a:hover{color:var(--accent)}

.post-content{font-size:16px}
.post-content p{margin:0 0 18px}
.post-content img,.post-content video{max-width:100%;height:auto;display:block;border-radius:14px;margin:20px auto;box-shadow:var(--shadow)}
.post-content img{cursor:zoom-in}
.lightbox{position:fixed;inset:0;background:rgba(5,10,20,.92);z-index:100;display:none;align-items:center;justify-content:center;padding:24px;cursor:zoom-out}
.lightbox.show{display:flex}
.lightbox img{max-width:100%;max-height:100%;border-radius:8px;box-shadow:0 20px 60px rgba(0,0,0,.5)}
.lightbox .lb-close{position:absolute;top:18px;left:18px;width:40px;height:40px;border-radius:50%;background:rgba(255,255,255,.12);color:#fff;border:none;font-size:20px;cursor:pointer;display:flex;align-items:center;justify-content:center}
.lightbox .lb-close:hover{background:rgba(255,255,255,.22)}
.post-content h2{font-size:21px;margin:34px 0 14px;font-weight:800;scroll-margin-top:80px}
.post-content h3{font-size:18px;margin:26px 0 10px;font-weight:700;scroll-margin-top:80px}
.post-content a{border-bottom:1px solid var(--accent)}
.post-content .attach{display:inline-flex;align-items:center;gap:8px;background:var(--panel);border:1px solid var(--bd);border-radius:10px;padding:10px 14px;text-decoration:none;color:var(--text)!important;margin:8px 0;box-shadow:var(--shadow)}
.post-content .cta-btn{display:inline-flex;align-items:center;gap:8px;background:var(--accent);color:#fff!important;font-weight:700;padding:12px 22px;border-radius:10px;text-decoration:none!important;margin:8px 0;border-bottom:none!important}
.post-content .cta-icon{font-size:16px}
.post-content blockquote{border-right:3px solid var(--accent);margin:20px 0;padding:6px 18px;color:var(--text-2);background:var(--accent-soft);border-radius:0 10px 10px 0}
.post-content pre{background:var(--panel-2);border:1px solid var(--bd);border-radius:10px;padding:14px 16px;overflow-x:auto;font-family:Consolas,monospace;direction:ltr;text-align:left}
.post-content code{background:var(--panel-2);border-radius:5px;padding:2px 6px;font-family:Consolas,monospace}

.tags{display:flex;flex-wrap:wrap;gap:6px;margin:28px 0 0}
.tag{font-size:11.5px;background:var(--panel-2);border:1px solid var(--bd);color:var(--text-2);padding:4px 12px;border-radius:20px}

.share{display:flex;align-items:center;gap:10px;margin:28px 0;padding:16px 0;border-top:1px solid var(--bd);border-bottom:1px solid var(--bd)}
.share span{font-size:12.5px;color:var(--text-3);font-weight:600}
.share a,.share button{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:50%;background:var(--panel-2);border:1px solid var(--bd);color:var(--text-2);cursor:pointer;font-family:inherit;font-size:15px}
.share a:hover,.share button:hover{background:var(--accent-soft);color:var(--accent);border-color:var(--accent)}

.author-box{display:flex;align-items:center;gap:14px;background:var(--panel);border:1px solid var(--bd);border-radius:16px;padding:18px;margin:30px 0;box-shadow:var(--shadow)}
.author-box .av{width:46px;height:46px;border-radius:50%;background:var(--accent-soft);display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}
.author-box b{font-size:13.5px}
.author-box p{margin:2px 0 0;font-size:12.5px;color:var(--text-2)}

.related h3{font-size:15px;color:var(--text-3);margin:0 0 14px;font-weight:700}
.back{display:inline-flex;align-items:center;gap:6px;margin-top:34px;font-size:13.5px;font-weight:600}

footer.site-foot{margin-top:50px;padding:26px 0;border-top:1px solid var(--bd);text-align:center;color:var(--text-3);font-size:12px}
footer.site-foot a{color:var(--text-2);font-weight:600;margin:0 4px}

/* Tables: the troubleshooting table in the server guide had no rules, so it
   rendered as a bare browser default. Wrapped in overflow-x for narrow screens. */
.post-content .tbl-scroll{overflow-x:auto;margin:22px 0}
.post-content table{width:100%;border-collapse:collapse;font-size:14px;background:var(--panel);border:1px solid var(--bd);border-radius:12px;overflow:hidden}
.post-content th,.post-content td{padding:11px 13px;border-bottom:1px solid var(--bd);text-align:start;vertical-align:top}
.post-content th{background:var(--panel-2);font-weight:700;font-size:13.5px;white-space:nowrap}
.post-content tr:last-child td{border-bottom:none}