:root{
  --bg:#f7f8fa; --card:#fff; --text:#1f2430; --muted:#6b7280; --border:#e5e7eb;
  --accent:#2563eb; --danger:#dc2626; --ok:#16a34a;
}
*{box-sizing:border-box}
body{margin:0;font-family:'Cairo',system-ui,'Segoe UI',Tahoma,sans-serif;background:var(--bg);color:var(--text);line-height:1.7}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:960px;margin:0 auto;padding:0 16px}
img{max-width:100%}

/* nav */
.nav{background:var(--card);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:5}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:60px}
.brand{font-weight:700;font-size:20px;color:var(--text)}
.links{display:flex;align-items:center;gap:16px}
.links a{color:var(--text)}
.who{color:var(--muted);font-size:14px}
.nav-burger{display:none;align-items:center;cursor:pointer;color:var(--text);padding:6px;margin-inline-start:auto}
.btn-sm,.btn{background:var(--accent);color:#fff;padding:8px 14px;border-radius:8px}
.btn-sm:hover,.btn:hover{text-decoration:none;opacity:.92}

/* flash */
.flash{background:#fef9c3;border:1px solid #fde68a;padding:10px 14px;border-radius:8px;margin:14px 0}

main{padding:24px 0;min-height:60vh}

/* hero + search */
.hero{text-align:center;padding:28px 0}
.hero h1{font-size:32px;margin:0 0 6px}
.hero p{color:var(--muted);margin:0 0 18px}
.search{display:flex;gap:8px;max-width:520px;margin:0 auto}
.search input{flex:1;padding:12px 14px;border:1px solid var(--border);border-radius:10px;font:inherit}
.search button{padding:12px 20px;border:0;background:var(--accent);color:#fff;border-radius:10px;cursor:pointer;font:inherit}
.filters{display:flex;flex-wrap:wrap;gap:8px;max-width:640px;margin:0 auto}
.filters input[type=search]{flex:1 1 200px;padding:12px 14px;border:1px solid var(--border);border-radius:10px;font:inherit}
.filters select{padding:12px 14px;border:1px solid var(--border);border-radius:10px;font:inherit;background:var(--card);cursor:pointer}
.filters button{padding:12px 20px;border:0;background:var(--accent);color:#fff;border-radius:10px;cursor:pointer;font:inherit}

/* AI search feedback */
.ai-search{max-width:560px;margin:14px auto 0;text-align:right}
.ai-status{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--muted)}
.ai-spin{display:none;width:16px;height:16px;border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:ai-rot .7s linear infinite;flex:none}
.ai-search.searching .ai-spin{display:inline-block}
.ai-reset{margin-inline-start:auto;font-size:13px}
.ai-think{margin-top:8px;background:#f1f5f9;border:1px solid var(--border);border-radius:10px;padding:10px 12px;font-size:13px;line-height:1.7;color:var(--muted);max-height:130px;overflow:auto;white-space:pre-wrap}
@keyframes ai-rot{to{transform:rotate(360deg)}}
@media (prefers-reduced-motion:reduce){.ai-spin{animation:none;border-top-color:var(--accent);border-color:var(--accent)}}

/* spec generator */
.spec-form{max-width:760px;margin:0 auto}
.spec-form textarea{width:100%;padding:14px;border:1px solid var(--border);border-radius:12px;font:inherit;line-height:1.7;resize:vertical}
.spec-form button{margin-top:10px;padding:11px 22px;border:0;background:var(--accent);color:#fff;border-radius:10px;cursor:pointer;font:inherit}
.spec-stream{max-width:860px;margin:14px auto;background:var(--card);border:1px solid var(--border);border-radius:12px;padding:16px;white-space:pre-wrap;line-height:1.8;max-height:420px;overflow:auto;font-family:inherit;direction:rtl}
.spec-file{max-width:860px;margin:14px auto}
.spec-file-head{display:flex;align-items:center;gap:12px;margin-bottom:6px}
.spec-file-head strong{font-family:ui-monospace,monospace}
#specStatus{max-width:760px;margin:12px auto 0}

/* UI generator (Stitch-style) */
.ui-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px;justify-content:center}
.ui-chips .ui-chip{border:1px solid var(--border);background:var(--card);color:var(--text);border-radius:999px;padding:7px 16px;margin:0;cursor:pointer;font:inherit;font-size:14px;transition:border-color .15s,color .15s,background .15s}
.ui-chips .ui-chip:hover{border-color:var(--accent);color:var(--accent)}
.ui-seg-btn:focus-visible,.ui-chips .ui-chip:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
/* designed "building" skeleton */
.ui-skeleton{width:100%;height:72vh;border-radius:10px;background:linear-gradient(100deg,#e9edf2 30%,#f6f8fb 50%,#e9edf2 70%);background-size:200% 100%;animation:ui-shimmer 1.3s ease-in-out infinite}
@keyframes ui-shimmer{0%{background-position:200% 0}100%{background-position:-200% 0}}
@media (prefers-reduced-motion:reduce){.ui-skeleton{animation:none}}
.ui-result{margin:18px auto}
.ui-toolbar{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:10px}
.ui-seg{display:inline-flex;border:1px solid var(--border);border-radius:10px;overflow:hidden;background:var(--card)}
.ui-seg-btn{border:0;background:none;padding:8px 14px;cursor:pointer;font:inherit;color:var(--muted);display:inline-flex;align-items:center;gap:6px}
.ui-seg-btn.active{background:var(--accent);color:#fff}
.ui-toolbar-actions{display:flex;gap:14px;align-items:center;margin-inline-start:auto}
.ui-preview-wrap{background:#eef1f5;border:1px solid var(--border);border-radius:14px;padding:14px;display:flex;justify-content:center;transition:padding .2s ease}
.ui-preview{border:0;background:#fff;border-radius:10px}
.ui-preview-wrap.desktop .ui-preview{width:100%;height:72vh}
.ui-preview-wrap.mobile{padding:20px}
.ui-preview-wrap.mobile .ui-preview{width:390px;max-width:100%;height:72vh;border-radius:26px;box-shadow:0 12px 44px rgba(0,0,0,.2)}
.ui-refine{display:flex;gap:8px;margin-top:12px}
.ui-refine input{flex:1;padding:11px 14px;border:1px solid var(--border);border-radius:10px;font:inherit}

/* select-to-edit toolbar + result popover */
.spec-body{cursor:text}
.spec-hint{margin-inline-start:auto;font-size:12px}
.sel-tool{position:absolute;z-index:60;display:flex;gap:6px;align-items:center;background:var(--card);border:1px solid var(--border);border-radius:12px;padding:6px;box-shadow:0 8px 24px rgba(0,0,0,.15);
  opacity:0;transform:scale(.92) translateY(4px);transition:opacity .16s ease-out,transform .16s ease-out}
.sel-tool.show{opacity:1;transform:scale(1) translateY(0)}
.sel-tool input{border:1px solid var(--border);border-radius:8px;padding:7px 10px;font:inherit;min-width:210px}
.sel-tool input.shake{animation:sel-shake .4s}
.sel-btn{border:0;background:var(--accent);color:#fff;border-radius:8px;padding:7px 12px;cursor:pointer;font:inherit;white-space:nowrap}
.sel-btn.ghost{background:#eef2ff;color:var(--accent)}
.sel-result{position:absolute;z-index:60;width:min(420px,92vw);background:var(--card);border:1px solid var(--border);border-radius:12px;overflow:hidden;box-shadow:0 12px 36px rgba(0,0,0,.18);
  opacity:0;transform:scale(.96);transition:opacity .18s ease-out,transform .18s ease-out}
.sel-result.show{opacity:1;transform:scale(1)}
.sel-result-head{display:flex;justify-content:space-between;align-items:center;background:var(--accent);color:#fff;padding:9px 14px;font-weight:600;font-size:14px}
.sel-result-body{padding:14px;white-space:pre-wrap;line-height:1.8;max-height:300px;overflow:auto;font-size:14px}
.sel-result-actions{display:flex;gap:12px;align-items:center;padding:0 14px 14px}
.spec-body.flash{animation:spec-flash .8s ease-out}
@keyframes spec-flash{0%{background:#fef9c3}100%{background:var(--card)}}
@keyframes sel-shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-4px)}75%{transform:translateX(4px)}}
@media (prefers-reduced-motion:reduce){.sel-tool,.sel-result{transition:none}.spec-body.flash,.sel-tool input.shake{animation:none}}

/* grid + cards */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;margin-top:8px}
.card{display:flex;flex-direction:column;min-height:190px;background:var(--card);border:1px solid var(--border);border-radius:12px;padding:18px;color:var(--text)}
.card:hover{text-decoration:none;border-color:var(--accent);box-shadow:0 4px 16px rgba(0,0,0,.05)}
.card h3{margin:0 0 8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.muted{color:var(--muted)}
.card .muted{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.meta{display:flex;align-items:center;gap:10px;margin-top:12px;font-size:13px;color:var(--muted)}
.card .meta{margin-top:auto;padding-top:12px}
.tag{background:#eef2ff;color:#3730a3;padding:2px 8px;border-radius:999px}
.empty{text-align:center;color:var(--muted);padding:40px 0}
.cat-title{margin:26px 0 4px;font-size:20px;border-bottom:2px solid var(--border);padding-bottom:6px}
.home-skills{margin-top:34px}
.sec-head{display:flex;align-items:baseline;justify-content:space-between;border-bottom:2px solid var(--border);padding-bottom:6px;margin-bottom:12px}
.sec-head h2{margin:0;font-size:20px}
.prompt-block{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:14px 16px;margin-bottom:16px}
.prompt-head{display:flex;align-items:center;gap:12px;margin-bottom:6px;flex-wrap:wrap}
.prompt-block .ph{font-size:13px;margin-bottom:8px}
.prompt-block textarea{width:100%;direction:rtl;text-align:right;font-family:'Cairo',sans-serif;padding:11px 14px;border:1px solid var(--border);border-radius:8px;line-height:1.7}
.ext-arrow{color:var(--muted);font-size:14px}

/* article */
.post-head h1{margin-bottom:4px}
.ext{font-size:13px}
.inline{display:inline}
.fav{background:none;border:1px solid var(--border);border-radius:999px;padding:4px 12px;cursor:pointer;font:inherit;color:var(--text)}
.fav.on{border-color:var(--accent);color:var(--accent)}
.prose{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:24px;margin:18px 0}
.prose h2,.prose h3{margin-top:1.4em}
.prose pre{background:#0f172a;color:#e2e8f0;padding:14px;border-radius:8px;overflow:auto;direction:ltr;text-align:left}
.prose code{background:#eef2ff;padding:1px 5px;border-radius:4px;direction:ltr;display:inline-block}
.prose pre code{background:none;padding:0;color:inherit}
.md-table{width:100%;border-collapse:collapse;margin:14px 0;font-size:15px}
.md-table th,.md-table td{border:1px solid var(--border);padding:8px 12px;text-align:right}
.md-table th{background:#f9fafb}
.md-table tr:nth-child(even) td{background:#fafafa}

/* chat */
.chat{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:18px;margin:18px 0}
.chat h2{margin-top:0;font-size:18px}
.chat-log{max-height:340px;overflow:auto;display:flex;flex-direction:column;gap:10px;margin-bottom:12px}
.msg{padding:10px 14px;border-radius:12px;max-width:85%;white-space:pre-wrap}
.msg.user{align-self:flex-start;background:var(--accent);color:#fff}
.msg.bot{align-self:flex-end;background:#f1f5f9}
.msg.err{align-self:center;background:#fee2e2;color:#991b1b;font-size:14px}
.chat-form{display:flex;gap:8px}
.chat-input{flex:1;padding:11px 14px;border:1px solid var(--border);border-radius:10px;font:inherit}
.chat-form button{padding:11px 18px;border:0;background:var(--accent);color:#fff;border-radius:10px;cursor:pointer;font:inherit}

/* floating popup chat (home) */
.chat-fab{position:fixed;bottom:22px;left:22px;width:58px;height:58px;border-radius:50%;background:var(--accent);color:#fff;border:0;font-size:24px;cursor:pointer;box-shadow:0 6px 20px rgba(0,0,0,.25);z-index:50}
.chat-fab:hover{opacity:.92}
.chat-popup{position:fixed;bottom:90px;left:22px;width:360px;max-width:calc(100vw - 44px);background:var(--card);border:1px solid var(--border);border-radius:14px;box-shadow:0 12px 40px rgba(0,0,0,.22);z-index:50;overflow:hidden}
.chat-popup[hidden]{display:none}
.chat-popup-head{display:flex;justify-content:space-between;align-items:center;background:var(--accent);color:#fff;padding:12px 16px;font-weight:600;font-size:15px}
.chat-close{background:none;border:0;color:#fff;font-size:22px;cursor:pointer;line-height:1;padding:0 4px}
.chat-popup .chat{border:0;margin:0;padding:14px;background:none;border-radius:0}
.chat-popup .chat-log{min-height:140px}

/* comments + forms */
.comments{margin-top:24px}
.comment-form textarea,.stack textarea,.stack input{width:100%;padding:11px 14px;border:1px solid var(--border);border-radius:10px;font:inherit}
.comment-form button{margin-top:8px;padding:9px 18px;border:0;background:var(--accent);color:#fff;border-radius:8px;cursor:pointer;font:inherit}
.comment{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:12px 16px;margin-top:12px}
.c-head{font-size:14px;margin-bottom:4px}

/* auth */
.auth{max-width:400px;margin:24px auto;background:var(--card);border:1px solid var(--border);border-radius:12px;padding:24px}
.auth label,.stack label{display:block;margin-bottom:14px;font-size:14px}
.auth input{width:100%;padding:11px 14px;border:1px solid var(--border);border-radius:10px;font:inherit;margin-top:5px}
.auth button,.stack button{padding:11px 22px;border:0;background:var(--accent);color:#fff;border-radius:8px;cursor:pointer;font:inherit}

/* admin */
.admin-nav{display:flex;gap:10px;flex-wrap:wrap;border-bottom:1px solid var(--border);padding-bottom:12px;margin-bottom:18px}
.admin-nav a{padding:8px 14px;border-radius:8px;background:var(--card);border:1px solid var(--border);color:var(--text)}
.admin-nav a:hover{text-decoration:none;border-color:var(--accent)}
.stack label input,.stack label textarea{margin-top:5px}
.stack textarea{direction:ltr;text-align:left;font-family:ui-monospace,monospace}
.row{display:flex;gap:10px;align-items:center;margin:14px 0}
.btn-alt{padding:9px 16px;border:1px solid var(--accent);background:#fff;color:var(--accent);border-radius:8px;cursor:pointer;font:inherit}
.tbl{width:100%;border-collapse:collapse;background:var(--card);border:1px solid var(--border);border-radius:12px;overflow:hidden}
.tbl th,.tbl td{padding:11px 14px;border-bottom:1px solid var(--border);text-align:right}
.tbl th{background:#f9fafb;font-size:14px}
.actions{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.link{background:none;border:0;color:var(--accent);cursor:pointer;font:inherit;padding:0}
.link.danger{color:var(--danger)}
.badge{background:#f1f5f9;color:var(--muted);padding:2px 10px;border-radius:999px;font-size:13px}
.badge.ok{background:#dcfce7;color:var(--ok)}

.foot{border-top:1px solid var(--border);padding:20px 0;color:var(--muted);text-align:center;font-size:14px;margin-top:30px}
hr{border:0;border-top:1px solid var(--border);margin:18px 0}

/* ---- mobile ---- */
@media (max-width:760px){
  .nav-inner{position:relative}
  .nav-burger{display:flex}
  .links{display:none;position:absolute;top:60px;inset-inline-start:0;inset-inline-end:0;flex-direction:column;align-items:stretch;gap:0;background:var(--card);border-bottom:1px solid var(--border);box-shadow:0 8px 20px rgba(0,0,0,.1);z-index:20;padding:4px 16px}
  .nav-toggle:checked ~ .links{display:flex}
  .links a,.links .who{padding:13px 4px;border-bottom:1px solid var(--border)}
  .links .who{color:var(--muted);border-bottom:none}
  .links .btn-sm{background:none;color:var(--accent);text-align:start;padding:13px 4px;border-radius:0}
  .hero{padding:18px 0}
  .hero h1{font-size:26px}
  .tbl,.md-table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch;white-space:nowrap}
  .prose{padding:16px}
  .sel-tool{flex-wrap:wrap;max-width:92vw}
  .sel-tool input{min-width:0;flex:1 1 100%}
  .chat-popup{left:12px;right:12px;width:auto;bottom:84px}
  .chat-fab{bottom:16px;left:16px}
}