/* NSS — Network Security Solutions
   Design idea: the site is drawn like a low-current engineering plan.
   Palette comes from the logo (signal red + circuit blue) on deep ink. */

:root{
  --ink:#061230;
  --ink-2:#0b1c4a;
  --blue:#1b3fb8;
  --blue-hi:#6c91ff;
  --red:#e8141f;
  --red-hi:#ff4650;
  --paper:#f2f4f8;
  --white:#fff;
  --line:#d6dce9;
  --text:#14203d;
  --muted:#55627e;
  --f-head:"Readex Pro","IBM Plex Sans Arabic",system-ui,sans-serif;
  --f-body:"IBM Plex Sans Arabic","Readex Pro",system-ui,sans-serif;
  --gutter:clamp(20px,5vw,72px);
  --max:1240px;
  --header:72px;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header) + 12px);-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--text);font-family:var(--f-body);font-size:1.0625rem;line-height:1.7;-webkit-font-smoothing:antialiased}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0;padding:0}
ul,ol{list-style:none}
button,input,textarea{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--blue-hi);outline-offset:3px;border-radius:4px}

.wrap{width:min(100% - 2 * var(--gutter),var(--max));margin-inline:auto}
.skip{position:absolute;inset-inline-start:12px;top:-60px;z-index:100;background:var(--white);color:var(--ink);padding:10px 16px;border-radius:6px;font-weight:600}
.skip:focus{top:12px}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:50px;padding:0 26px;border-radius:4px;font-family:var(--f-head);font-weight:500;font-size:.98rem;border:1px solid transparent;cursor:pointer;transition:background .2s,border-color .2s,transform .2s}
.btn-red{background:var(--red);color:#fff}
.btn-red:hover{background:#ff2d38}
.btn-ghost{border-color:rgba(255,255,255,.4);color:#fff}
.btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.08)}
.btn-sm{min-height:42px;padding:0 18px;font-size:.9rem}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(6,18,48,.88);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid rgba(255,255,255,.08);color:#fff}
.bar{height:var(--header);display:flex;align-items:center;gap:32px}
.brand{display:flex;align-items:center;gap:14px;flex:none}
.brand img{width:76px;height:auto}
.brand-name{font-family:var(--f-head);font-weight:500;font-size:.92rem;line-height:1.2;color:rgba(255,255,255,.82);white-space:nowrap}
.nav{display:flex;gap:30px;margin-inline-start:auto}
.nav a{font-family:var(--f-head);font-size:.94rem;color:rgba(255,255,255,.75);padding:6px 0;border-bottom:2px solid transparent;transition:color .2s,border-color .2s}
.nav a:hover{color:#fff;border-color:var(--red)}
.bar-tools{display:flex;align-items:center;gap:12px}
.lang{background:none;border:1px solid rgba(255,255,255,.3);color:#fff;border-radius:4px;min-height:42px;padding:0 14px;font-family:var(--f-head);font-size:.9rem;cursor:pointer;transition:border-color .2s}
.lang:hover{border-color:#fff}
.burger{display:none;width:42px;height:42px;background:none;border:1px solid rgba(255,255,255,.3);border-radius:4px;cursor:pointer;position:relative}
.burger span{position:absolute;inset-inline:11px;height:2px;background:#fff;transition:transform .2s,top .2s}
.burger span:nth-child(1){top:16px}.burger span:nth-child(2){top:24px}
.burger[aria-expanded=true] span:nth-child(1){top:20px;transform:rotate(45deg)}
.burger[aria-expanded=true] span:nth-child(2){top:20px;transform:rotate(-45deg)}

/* ---------- hero ---------- */
.hero{position:relative;isolation:isolate;overflow:hidden;background:var(--ink);color:#fff}
.hero::before{content:"";position:absolute;inset:0;z-index:-1;
  background:
    radial-gradient(60% 70% at 78% 45%,rgba(27,63,184,.5),transparent 70%),
    linear-gradient(rgba(108,145,255,.08) 1px,transparent 1px) 0 0/44px 44px,
    linear-gradient(90deg,rgba(108,145,255,.08) 1px,transparent 1px) 0 0/44px 44px;
  -webkit-mask-image:radial-gradient(90% 90% at 70% 50%,#000 30%,transparent 100%);
  mask-image:radial-gradient(90% 90% at 70% 50%,#000 30%,transparent 100%)}
.hero-grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(28px,4vw,72px);align-items:center;padding-block:clamp(48px,7vw,104px);min-height:min(760px,calc(100svh - var(--header)))}
.hero h1{font-family:var(--f-head);font-weight:500;font-size:clamp(2.35rem,4.5vw,4.3rem);line-height:1.06;letter-spacing:-.03em;text-wrap:balance}
.lead{margin-top:26px;font-size:clamp(1.02rem,1.3vw,1.16rem);line-height:1.8;color:rgba(255,255,255,.78);max-width:46ch}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:36px}

/* floor-plan drawing */
.plan{border:1px solid rgba(255,255,255,.14);background:rgba(6,18,48,.55);border-radius:6px;padding:clamp(10px,1.6vw,22px) clamp(10px,1.6vw,22px) 0}
.plan-svg{width:100%;height:auto;overflow:visible;direction:ltr;unicode-bidi:isolate}
.plan-svg text{direction:ltr;unicode-bidi:isolate}
.plan figcaption{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 24px;padding:14px 4px 16px;margin-top:6px;border-top:1px solid rgba(255,255,255,.14);font-size:.88rem;color:rgba(255,255,255,.7)}
.cap-title{font-family:var(--f-head);color:#fff;font-weight:500}
.legend{display:flex;flex-wrap:wrap;gap:6px 20px}
.legend li{display:flex;align-items:center;gap:8px}
.k{display:inline-block;width:12px;height:12px;flex:none}
.k-cam{background:var(--red-hi);border-radius:2px}
.k-acs{border:1.5px solid #fff;border-radius:50%}
.k-ap{background:var(--blue-hi);border-radius:50%;box-shadow:0 0 0 3px rgba(108,145,255,.3)}
.k-cab{height:2px;background:var(--blue-hi);align-self:center}

.walls .wall{stroke:rgba(255,255,255,.72);stroke-width:2.2;stroke-linecap:square;stroke-dasharray:100;animation:draw 1.5s cubic-bezier(.5,0,.2,1) both}
.walls .wall.thin{stroke:rgba(255,255,255,.4);stroke-width:1.2;animation-delay:.5s}
.cables .cable{stroke:var(--blue-hi);stroke-width:1.6;stroke-dasharray:100;stroke-linejoin:round;animation:draw 1.1s ease-out 1.1s both}
.pulses .pulse{stroke:#fff;stroke-width:2.2;stroke-linecap:round;stroke-dasharray:1.5 26;animation:fade .6s ease 2.8s both,flow 2.6s linear 2.8s infinite}
.cones .cone{fill:rgba(255,70,80,.13);stroke:rgba(255,70,80,.55);stroke-width:1;stroke-dasharray:3 4;animation:fade .9s ease 1.9s both}
.devs>*{animation:fade .6s ease 1.6s both}
.cam rect{fill:var(--ink);stroke:var(--red-hi);stroke-width:1.6}
.cam circle{fill:var(--red-hi)}
.acs circle:first-child{fill:var(--ink);stroke:#fff;stroke-width:1.5}
.acs circle:last-child{fill:#fff}
.ic rect{fill:var(--ink);stroke:#fff;stroke-width:1.5}
.ic path{stroke:#fff;stroke-width:1.2;fill:none}
.screen{stroke:#fff;stroke-width:3.5;stroke-linecap:round}
.rack rect{fill:rgba(108,145,255,.08);stroke:rgba(255,255,255,.8);stroke-width:1.6}
.rack path{stroke:rgba(255,255,255,.4);stroke-width:1;fill:none}
.led{fill:var(--blue-hi);animation:blink 2.4s steps(1) infinite}
.led.l2{animation-delay:.7s}.led.l3{animation-delay:1.5s}
.ap .core{fill:var(--blue-hi)}
.ap .ring{fill:none;stroke:var(--blue-hi);stroke-width:1.2;transform-box:fill-box;transform-origin:center;animation:ring 3s ease-out 2.4s infinite;opacity:0}
.ap .ring.r2{animation-delay:3.2s}
.notes text{font-family:var(--f-head);font-size:10.5px;fill:rgba(255,255,255,.62);letter-spacing:.06em;animation:fade .6s ease 2.2s both}

@keyframes draw{from{stroke-dashoffset:100}to{stroke-dashoffset:0}}
@keyframes fade{from{opacity:0}to{opacity:1}}
@keyframes flow{to{stroke-dashoffset:27.5}}
@keyframes blink{0%{opacity:1}50%{opacity:.25}}
@keyframes ring{0%{opacity:.7;transform:scale(.3)}100%{opacity:0;transform:scale(1)}}

/* ---------- shared section bits ---------- */
.sec{padding-block:clamp(72px,9vw,128px)}
.trace{width:120px;height:auto;aspect-ratio:240/16;fill:none;stroke:var(--red);stroke-width:1.6;margin-bottom:28px}
.sec h2{font-family:var(--f-head);font-weight:500;font-size:clamp(1.9rem,3.6vw,3.2rem);line-height:1.12;letter-spacing:-.025em;text-wrap:balance}
.sec-head p{margin-top:16px;color:var(--muted);max-width:52ch}

/* about */
.about{background:var(--paper)}
.about-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,4fr);gap:clamp(40px,7vw,120px);align-items:start}
.about-lead h2{max-width:16ch}
.about-lead p{margin-top:28px;max-width:62ch;color:#33415f}
.facts{display:grid;gap:0;border-top:1px solid var(--line)}
.facts div{display:flex;flex-direction:column-reverse;padding:22px 0;border-bottom:1px solid var(--line)}
.facts dd{font-family:var(--f-head);font-weight:500;font-size:clamp(2.2rem,4vw,3.4rem);line-height:1;letter-spacing:-.03em;color:var(--blue)}
.facts dt{margin-top:10px;color:var(--muted);font-size:.95rem}

/* solutions */
.solutions{background:var(--white)}
.solutions .sec-head{margin-bottom:clamp(40px,5vw,72px)}
.groups{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(28px,3.4vw,56px)}
.group{border-top:3px solid var(--ink);padding-top:22px}
.g-protect{border-color:var(--red)}
.g-connect{border-color:var(--blue)}
.g-collab{border-color:var(--ink)}
.group h3{font-family:var(--f-head);font-weight:500;font-size:1.7rem;letter-spacing:-.02em;margin-bottom:10px}
.group li{display:grid;grid-template-columns:44px 1fr;gap:18px;padding:26px 0;border-top:1px solid var(--line)}
.group li:first-child{border-top:0}
.group svg{width:44px;height:44px;padding:9px;border:1px solid var(--line);border-radius:4px;fill:none;stroke:var(--ink);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;transition:background .2s,border-color .2s,stroke .2s}
.g-protect li:hover svg{background:var(--red);border-color:var(--red);stroke:#fff}
.g-connect li:hover svg{background:var(--blue);border-color:var(--blue);stroke:#fff}
.g-collab li:hover svg{background:var(--ink);border-color:var(--ink);stroke:#fff}
.group h4{font-family:var(--f-head);font-weight:500;font-size:1.12rem;line-height:1.3;margin-bottom:6px}
.group li p{color:var(--muted);font-size:.97rem;line-height:1.65}

/* projects */
.projects{background:linear-gradient(rgba(6,18,48,.9),rgba(6,18,48,.95)),url(../img/projects/aerial.jpg) center/cover;background-color:var(--ink);color:#fff}
.projects .sec-head{margin-bottom:clamp(36px,5vw,64px)}
.projects .sec-head p{color:rgba(255,255,255,.68)}
.proj-body{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(28px,5vw,80px);align-items:center}
.proj-list{position:relative}
.proj-list::before{content:"";position:absolute;inset-block:26px;inset-inline-start:7px;width:1.5px;background:linear-gradient(var(--blue-hi),rgba(108,145,255,.25))}
.proj-list li{border-bottom:1px solid rgba(255,255,255,.1)}
.proj-list li:first-child{border-top:1px solid rgba(255,255,255,.1)}
.proj-list button{position:relative;display:block;width:100%;text-align:start;background:none;border:0;cursor:pointer;padding:20px 0;padding-inline-start:46px;font-family:var(--f-head);font-weight:400;font-size:clamp(1.15rem,2.1vw,1.7rem);letter-spacing:-.02em;line-height:1.25;color:rgba(255,255,255,.6);transition:color .2s,padding .25s}
html[lang=ar] .proj-list button{letter-spacing:0}
.proj-list button::before{content:"";position:absolute;inset-inline-start:0;top:50%;width:16px;height:16px;margin-top:-8px;border:1.5px solid var(--blue-hi);border-radius:50%;background:var(--ink);transition:background .2s,border-color .2s}
.proj-list button:hover,.proj-list button[aria-pressed=true]{color:#fff}
.proj-list button[aria-pressed=true]{padding-inline-start:54px}
.proj-list button[aria-pressed=true]::before{background:var(--red);border-color:var(--red)}

.stage{position:relative;aspect-ratio:4/3;border-radius:6px;overflow:hidden;background:var(--ink-2);border:1px solid rgba(255,255,255,.14);box-shadow:0 40px 80px -40px rgba(0,0,0,.8)}
.shot{position:absolute;inset:0;opacity:0;visibility:hidden;transition:opacity .5s ease,visibility .5s}
.shot.is-on{opacity:1;visibility:visible}
.shot img{width:100%;height:100%;object-fit:cover}
.shot figcaption{position:absolute;inset-inline:0;bottom:0;padding:56px 24px 20px;background:linear-gradient(transparent,rgba(6,18,48,.88));font-family:var(--f-head);font-weight:500;font-size:1.05rem}
.shot-empty{display:grid;place-items:center;background:radial-gradient(60% 60% at 50% 45%,rgba(27,63,184,.45),var(--ink-2))}
.shot-empty .mark{width:min(220px,50%);height:auto;object-fit:contain;opacity:.9}

/* contact */
.contact{background:var(--blue);color:#fff;position:relative;overflow:hidden;isolation:isolate}
.contact::before{content:"";position:absolute;inset:0;z-index:-1;background:radial-gradient(50% 70% at 100% 0%,rgba(108,145,255,.5),transparent 70%),linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px) 0 0/44px 44px,linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px) 0 0/44px 44px;-webkit-mask-image:linear-gradient(180deg,#000,transparent 85%);mask-image:linear-gradient(180deg,#000,transparent 85%)}
.contact-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:clamp(36px,6vw,96px);align-items:start}
.contact h2{max-width:14ch}
.contact-lead>p{margin-top:20px;color:rgba(255,255,255,.82);max-width:48ch}
.form{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:36px}
.form label{display:grid;gap:8px;font-family:var(--f-head);font-size:.88rem;color:rgba(255,255,255,.85)}
.form .full{grid-column:1/-1}
.form input,.form textarea{width:100%;background:rgba(6,18,48,.35);border:1px solid rgba(255,255,255,.3);border-radius:4px;padding:13px 14px;font-family:var(--f-body);font-size:1rem;color:#fff;transition:border-color .2s,background .2s}
.form input:hover,.form textarea:hover{border-color:rgba(255,255,255,.6)}
.form input:focus,.form textarea:focus{outline:none;border-color:#fff;background:rgba(6,18,48,.55)}
.form textarea{resize:vertical;min-height:120px}
.form .btn{justify-self:start}
.form-note{align-self:center;font-size:.92rem;color:#fff;min-height:1.4em}
.form [aria-invalid=true]{border-color:#ffb3b8}

.card{background:var(--white);color:var(--text);border-radius:6px;padding:clamp(24px,3vw,40px);box-shadow:0 30px 60px -30px rgba(6,18,48,.6)}
.card-logo{width:min(200px,60%);height:auto;margin-bottom:26px}
.card dl>div{padding:16px 0;border-top:1px solid var(--line)}
.card dt{font-size:.85rem;color:var(--muted);margin-bottom:4px}
.card dd{display:grid;gap:2px;font-family:var(--f-head);font-weight:500;font-size:1.05rem;overflow-wrap:anywhere}
.card dd a{transition:color .2s}
.card dd a:hover{color:var(--blue)}
.card dd a[href^=tel]{unicode-bidi:isolate;justify-self:start}

/* footer */
.site-footer{background:var(--ink);color:rgba(255,255,255,.65);padding-block:28px;font-size:.88rem}
.foot{display:flex;flex-wrap:wrap;gap:14px 32px;align-items:center;justify-content:space-between}

/* ---------- Arabic ---------- */
html[lang=ar] body{line-height:1.85}
html[lang=ar] h1,html[lang=ar] .sec h2,html[lang=ar] .group h3,html[lang=ar] .proj-list li,html[lang=ar] .facts dd{letter-spacing:0}
html[lang=ar] .hero h1{line-height:1.3;font-size:clamp(2.2rem,4.1vw,3.9rem)}
html[lang=ar] .sec h2{line-height:1.3}
html[lang=ar] .lead{line-height:2}
html[lang=ar] .notes text{letter-spacing:0}
html[lang=ar] .trace{transform:scaleX(1)}

/* ---------- responsive ---------- */
@media (max-width:1020px){
  .hero-grid{grid-template-columns:1fr;min-height:0}
  .about-grid,.contact-grid,.proj-body{grid-template-columns:1fr}
  .stage{order:-1}
  .groups{grid-template-columns:1fr 1fr}
  .g-collab{grid-column:1/-1}
}
@media (max-width:820px){
  .burger{display:block}
  .bar-tools .btn{display:none}
  .bar-tools{margin-inline-start:auto}
  .nav{position:absolute;inset-inline:0;top:var(--header);flex-direction:column;gap:0;margin:0;background:var(--ink);border-bottom:1px solid rgba(255,255,255,.1);padding:8px var(--gutter) 20px;display:none}
  .nav.open{display:flex}
  .nav a{padding:14px 0;border-bottom:1px solid rgba(255,255,255,.08);font-size:1.05rem}
}
@media (max-width:640px){
  .groups{grid-template-columns:1fr}
  .form{grid-template-columns:1fr}
  .brand-name{display:none}
  .brand img{width:72px}
  .actions .btn{flex:1 1 100%}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .pulses{display:none}
  .ap .ring{opacity:0}
}