/* نوكس سمارت — الأساس والترويسة والهيرو والمزايا (سمتان: داكنة وفاتحة) */
:root{
  color-scheme:dark;
  --bg:#0B0D26; --bg-soft:#0D1032; --bg-deep:#08091C; --surface:#10133A; --surface-2:#0E1133;
  --line:#242A5E; --head:#FFFFFF; --ink:#EAECF8; --muted:#A9B1D6;
  --accent:#22D3EE; --accent-text:#22D3EE; --hero-glow:#2A2F8F;
  --glass:rgba(11,13,38,.85); --ph:#7079AC; --dots:rgba(169,177,214,.13);
  --grad-a:#2A2F8F; --grad-b:#0E1030;
}
[data-theme="light"]{
  color-scheme:light;
  --bg:#F5F6FA; --bg-soft:#EAEEFA; --bg-deep:#FFFFFF; --surface:#FFFFFF; --surface-2:#FFFFFF;
  --line:#DCE0F0; --head:#1A1E4E; --ink:#3E4470; --muted:#5F6694;
  --accent:#22D3EE; --accent-text:#0891B2; --hero-glow:#DDE3FB;
  --glass:rgba(245,246,250,.85); --ph:#8A90B8; --dots:rgba(26,30,78,.10);
}
*{margin:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"Cairo",system-ui,"Segoe UI",Tahoma,sans-serif;background:var(--bg);color:var(--ink);line-height:1.8}
img{max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer}
.wrap{max-width:1150px;margin:0 auto;padding:0 24px}
.center{text-align:center}
.cy{color:var(--accent-text);font-weight:700}
h1{font-weight:900;font-size:clamp(34px,5vw,56px);line-height:1.32;color:var(--head)}
h2{font-weight:900;font-size:clamp(25px,3.4vw,37px);color:var(--head);line-height:1.4;margin-bottom:10px}
.sub{color:var(--muted);max-width:680px;margin:0 0 36px;font-size:17px}
.sub.center{margin-inline:auto}
.sec{padding:84px 0;position:relative;border-top:1px solid var(--line);scroll-margin-top:104px}
.sec::before{content:"";position:absolute;top:-5.5px;left:50%;width:10px;height:10px;background:var(--accent);transform:translateX(-50%) rotate(45deg);border-radius:2px}
.eyebrow{display:flex;align-items:center;gap:12px;color:var(--accent-text);font-weight:700;font-size:15px;margin-bottom:14px}
.eyebrow.mid{justify-content:center}
.tick{width:34px;height:5px;border-radius:3px;background:var(--accent);flex-shrink:0}

/* تبديل شعار الترويسة بين السمتين */
.brand .lg-l{display:none}
[data-theme="light"] .brand .lg-d{display:none}
[data-theme="light"] .brand .lg-l{display:block}
.mode{width:38px;height:38px;border-radius:11px;border:1px solid var(--line);background:transparent;color:var(--head);display:grid;place-items:center;transition:.2s;flex-shrink:0}
.mode:hover{border-color:var(--accent)}
.mode svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
.i-moon{display:none}
[data-theme="light"] .i-sun{display:none}
[data-theme="light"] .i-moon{display:block}

/* الأزرار */
.btn{display:inline-block;background:var(--accent);color:#06202A;font-weight:700;padding:13px 26px;border-radius:14px;border:0;transition:.2s}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(34,211,238,.3)}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.btn.ghost:hover{border-color:var(--accent);box-shadow:none}
.btn.sm{padding:9px 20px;border-radius:11px;font-size:14.5px}

/* الهيرو وبحث النطاقات */
.hero{position:relative;overflow:hidden;padding:92px 0 88px;background:radial-gradient(70rem 42rem at 50% -18%,var(--hero-glow) 0%,var(--bg) 60%)}
.hero .wrap{position:relative}
.sky{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;--orbit:rgba(169,177,214,.15);--star:#EAECF8}
[data-theme="light"] .sky{--orbit:rgba(26,30,78,.13);--star:#1A1E4E}
.orb circle{fill:none;stroke:var(--orbit);stroke-width:1.5}
.o2 circle{stroke-dasharray:3 11}
.orb{transform-origin:720px -60px;animation:spin 95s linear infinite}
.o2{animation-duration:160s;animation-direction:reverse}
.sat{fill:var(--accent);opacity:.9}
.s2{opacity:.55}
.tw{fill:var(--star);opacity:.2;animation:tw 4s ease-in-out infinite}
.sp{fill:var(--accent);transform-box:fill-box;transform-origin:center;animation-name:spk}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes tw{0%,100%{opacity:.14}50%{opacity:.65}}
@keyframes spk{0%,100%{opacity:.25;transform:scale(.85)}50%{opacity:.9;transform:scale(1.12)}}
.hero .lead{color:var(--muted);font-size:18px;max-width:720px;margin:18px auto 34px}
.dsearch{display:flex;gap:10px;max-width:640px;margin:0 auto;background:rgba(11,13,38,.45);border:1px solid var(--line);border-radius:18px;padding:10px}
[data-theme="light"] .dsearch{background:rgba(255,255,255,.8)}
.dsearch input{flex:1;background:transparent;border:0;outline:0;color:var(--head);font:inherit;font-size:16.5px;padding:0 14px;min-width:0}
.dsearch input::placeholder{color:var(--ph)}
.dsearch input:focus{outline:2px solid rgba(34,211,238,.5);outline-offset:6px;border-radius:10px}
.tlds{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin:16px 0 22px}
.tlds button{background:transparent;border:1px solid var(--line);color:var(--muted);border-radius:99px;padding:5px 16px;font-weight:700;font-size:14px;direction:ltr;transition:.2s}
.tlds button:hover{color:var(--head);border-color:var(--accent)}
.tlds button.on{background:var(--accent);border-color:var(--accent);color:#06202A}
.ticker{display:inline-flex;align-items:center;gap:9px;color:var(--muted);font-size:14px;border:1px dashed var(--line);border-radius:99px;padding:6px 18px}
.ticker i{width:8px;height:8px;border-radius:50%;background:var(--accent);animation:blink 1.6s ease-in-out infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.25}}

/* بطاقات المزايا */
.grid4{display:grid;gap:18px;grid-template-columns:repeat(4,1fr)}
.fcard{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:26px 22px;text-align:center;transition:.25s}
.fcard:hover{transform:translateY(-5px);border-color:rgba(34,211,238,.6)}
.ic{width:50px;height:50px;color:var(--head);margin-bottom:14px}
.st{fill:none;stroke:currentColor;stroke-width:3.2;stroke-linecap:round;stroke-linejoin:round}
.dm{fill:var(--accent)}
.fcard h3{color:var(--head);font-size:18.5px;font-weight:700;margin-bottom:6px}
.fcard p{color:var(--muted);font-size:14.5px;line-height:1.75}