:root{
  --teal:#0e7c86;--teal-d:#0a5b63;--teal-l:#3aa7b0;--amber:#f5a623;--amber-d:#d98b0c;
  --ink:#12242a;--muted:#5f727a;--line:#e2e9ec;--bg:#f3f7f8;--card:#fff;--ok:#178a5a;--bad:#c9453b;
  --rad:14px;--wrap:1080px;
  --sans:"Tajawal","Cairo",system-ui,-apple-system,"Segoe UI",Tahoma,Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--sans);color:var(--ink);background:var(--bg);line-height:1.9;font-size:17px;direction:rtl;text-align:right}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 18px}
a{color:var(--teal);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{line-height:1.5;color:var(--ink);font-weight:800}
h1{font-size:1.8rem;margin:.2em 0 .4em}
h2{font-size:1.35rem;margin:1.4em 0 .5em}
h3{font-size:1.1rem;margin:1.1em 0 .4em}
p{margin:.6em 0}
img{max-width:100%}
.muted{color:var(--muted)}
/* top bar */
.topbar{background:var(--teal-d);color:#d7eef0;font-size:.82rem;text-align:center;padding:5px 10px}
/* header */
.site-header{background:var(--teal);color:#fff;position:sticky;top:0;z-index:50;box-shadow:0 2px 12px rgba(0,0,0,.12)}
.header-inner{display:flex;align-items:center;gap:14px;height:62px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:1.3rem}
.brand:hover{text-decoration:none}
.brand-mark{background:var(--amber);color:var(--teal-d);width:38px;height:38px;border-radius:11px;display:grid;place-items:center;font-weight:900;font-size:1rem;font-family:Arial,sans-serif}
.brand small{display:block;font-size:.62rem;color:#cdeef0;font-weight:500;margin-top:-4px}
.mainnav{margin-inline-start:auto;display:flex;gap:2px;align-items:center}
.mainnav a{color:#eafafb;padding:9px 12px;border-radius:9px;font-size:.95rem;font-weight:600}
.mainnav a:hover{background:rgba(255,255,255,.14);text-decoration:none}
.menu-toggle{display:none;margin-inline-start:auto;background:none;border:0;color:#fff;font-size:1.7rem;cursor:pointer}
/* hero */
.hero{background:linear-gradient(135deg,var(--teal),var(--teal-l));color:#fff;border-radius:var(--rad);padding:26px 22px;margin:18px 0;text-align:center}
.hero h1{color:#fff;font-size:2rem}
.hero p{color:#e9f7f8;max-width:60ch;margin:0 auto}
.crumb{font-size:.82rem;color:var(--muted);margin:14px 0 4px}
.crumb a{color:var(--muted)}.crumb .sep{margin:0 5px;color:#b7c2cc}
/* grid & cards */
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--rad);padding:18px}
.tool-tile{display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--rad);padding:18px;color:var(--ink);transition:.15s;text-align:center}
.tool-tile:hover{border-color:var(--teal-l);box-shadow:0 8px 22px rgba(14,124,134,.12);text-decoration:none;transform:translateY(-2px)}
.tool-tile .ico{font-size:2rem;display:block;margin-bottom:6px}
.tool-tile b{display:block;font-size:1.05rem;margin-bottom:3px}
.tool-tile small{color:var(--muted);font-size:.82rem;font-weight:400}
/* tool box */
.tool{background:#fff;border:1px solid var(--line);border-radius:var(--rad);padding:20px;margin:18px 0;box-shadow:0 4px 16px rgba(0,0,0,.03)}
.tool h2{margin-top:0}
label{display:block;font-weight:700;margin:.6em 0 .25em;font-size:.92rem}
input,select,textarea{width:100%;padding:12px 13px;border:1px solid #cdd6da;border-radius:10px;font-size:1rem;font-family:inherit;background:#fff}
input:focus,select:focus{outline:2px solid var(--teal-l);border-color:var(--teal-l)}
.row{display:flex;gap:12px;flex-wrap:wrap}
.row>div{flex:1;min-width:120px}
.btn{background:var(--amber);color:#3a2600;border:0;border-radius:10px;padding:13px 26px;font-weight:800;font-size:1.05rem;cursor:pointer;font-family:inherit;margin-top:14px}
.btn:hover{background:var(--amber-d)}
.btn-block{width:100%}
.seg{display:inline-flex;background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:3px;gap:3px;margin-bottom:6px}
.seg button{background:none;border:0;padding:8px 18px;border-radius:8px;font-weight:700;cursor:pointer;font-family:inherit;color:var(--muted);font-size:.9rem}
.seg button.active{background:var(--teal);color:#fff}
.result-box{margin-top:16px;padding:0;border-radius:12px;min-height:10px}
.result-box.show{padding:16px;background:#f0f9fa;border:1px solid #cfeaed}
/* result display */
.age-big{text-align:center;padding:10px 0}
.age-big .num{font-size:3rem;font-weight:900;color:var(--teal-d);line-height:1}
.age-big .lbl{color:var(--muted);font-size:1rem}
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:14px 0}
.stat{background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px 8px;text-align:center}
.stat b{display:block;font-size:1.4rem;color:var(--teal-d)}
.stat span{font-size:.8rem;color:var(--muted)}
.info-line{display:flex;justify-content:space-between;padding:9px 4px;border-bottom:1px dashed #d8e6e8}
.info-line span:first-child{color:var(--muted)}
.info-line b{color:var(--ink)}
.meter{height:26px;background:#eee;border-radius:999px;overflow:hidden;margin:10px 0}
.meter i{display:block;height:100%;background:linear-gradient(90deg,var(--amber),#ff6b6b);border-radius:999px;text-align:center;color:#fff;font-weight:800;font-size:.85rem;line-height:26px}
/* ads */
.ad-slot{margin:22px 0;text-align:center;background:#fbfcfd;border:1px solid var(--line);border-radius:12px;padding:8px;min-height:90px}
.ad-label{display:block;font-size:.66rem;letter-spacing:.1em;color:#a9b4bd;margin-bottom:4px}
/* faq */
.faq{margin:26px 0}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:11px;margin:8px 0;padding:2px 16px}
.faq-item summary{cursor:pointer;font-weight:700;padding:13px 0;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{content:"+";color:var(--amber-d);font-weight:900;margin-inline-end:8px}
.faq-item[open] summary::before{content:"–"}
.faq-a{padding-bottom:12px;color:var(--ink)}
/* prose */
.prose p,.prose li{max-width:74ch}
.prose ul{padding-inline-start:1.3em}
.prose li{margin:.35em 0}
.callout{background:#fff7e6;border:1px solid #f3dca0;border-inline-start:4px solid var(--amber);border-radius:10px;padding:13px 16px;margin:16px 0;font-size:.95rem}
.section-title{border-inline-start:4px solid var(--amber);padding-inline-start:12px}
.related{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0}
.related a{background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 15px;font-size:.88rem}
.tablewrap{overflow:auto;border:1px solid var(--line);border-radius:12px;background:#fff}
table{border-collapse:collapse;width:100%;font-size:.94rem}
th,td{padding:11px 12px;text-align:center;border-bottom:1px solid var(--line)}
th{background:var(--teal);color:#fff;font-weight:700}
tbody tr:nth-child(even){background:#f7fbfb}
hr{border:0;border-top:1px solid var(--line);margin:26px 0}
.pill{display:inline-block;background:var(--bg);border:1px solid var(--line);border-radius:999px;padding:3px 12px;font-size:.82rem;color:var(--muted)}
/* footer */
.site-footer{background:#0c2a2e;color:#bcd4d7;margin-top:42px;padding:34px 0 12px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:22px}
.footer-grid h4{color:#fff;font-size:.98rem;margin:0 0 8px}
.footer-grid a{display:block;color:#a7c3c6;font-size:.88rem;padding:2px 0}
.footer-grid a:hover{color:#fff}
.foot-legal{border-top:1px solid #1e4147;margin-top:22px;padding-top:14px}
.foot-legal p{font-size:.8rem;color:#8fabae;max-width:none}
@media(max-width:820px){
  .mainnav{position:fixed;inset:62px 0 auto 0;background:var(--teal-d);flex-direction:column;gap:0;padding:8px;display:none;max-height:calc(100vh - 62px);overflow:auto}
  .mainnav.open{display:flex}.mainnav a{width:100%;padding:13px}
  .menu-toggle{display:block}
  .g2,.g3,.g4{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  h1{font-size:1.45rem}.hero h1{font-size:1.55rem}
  .stat-row{grid-template-columns:repeat(2,1fr)}
}