/* =========================================================
   مؤسسة أبو سبعة لتحلية المياه — هوية بصرية جديدة بالكامل
   لمسة فخامة: كحلي مزرق عميق + ذهبي دافئ + خط عربي بارز
   ========================================================= */
:root{
  --ink-950:#04161C;
  --ink-900:#082430;
  --ink-800:#0D323F;
  --ink-700:#123F4F;
  --teal-600:#0E7C86;
  --teal-500:#149DA8;
  --teal-300:#5FCBD3;
  --teal-100:#E3F5F6;
  --gold-600:#B4881B;
  --gold-500:#C9A227;
  --gold-300:#E4C766;
  --pearl:#F8F6F0;
  --white:#FFFFFF;
  --ink:#0C2027;
  --ink-soft:#4A6570;
  --line:rgba(8,36,48,.13);
  --shadow-lg:0 32px 64px -22px rgba(4,22,28,.4);
  --shadow-md:0 16px 32px -14px rgba(4,22,28,.28);

  --font-display:'IBM Plex Sans Arabic', sans-serif;
  --font-body:'IBM Plex Sans Arabic', sans-serif;
  --font-util:'IBM Plex Sans Arabic', sans-serif;

  --container:1180px;
  --radius:20px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *{animation-duration:.01ms !important; animation-iteration-count:1 !important; transition-duration:.01ms !important;}
}

body{
  margin:0;
  font-family:var(--font-body);
  background:var(--pearl);
  color:var(--ink);
  line-height:1.8;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:700;
  color:var(--ink-950);
  margin:0 0 .5em;
  line-height:1.3;
}
p{margin:0 0 1em;}
a{color:inherit; text-decoration:none;}
img{max-width:100%; display:block;}
button{font-family:inherit; cursor:pointer;}

.container{max-width:var(--container); margin:0 auto; padding:0 28px; width:100%;}

.eyebrow{
  font-family:var(--font-util);
  font-size:.8rem; font-weight:600; letter-spacing:.05em;
  color:var(--gold-500);
  display:inline-flex; align-items:center; gap:10px;
  margin-bottom:16px;
}
.eyebrow::before{content:""; width:30px; height:2px; background:var(--gold-500); display:inline-block; border-radius:2px;}
.eyebrow::after{content:""; width:6px; height:6px; border-radius:50%; background:var(--teal-500); display:inline-block;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; gap:10px;
  padding:16px 32px; border-radius:100px;
  font-weight:700; font-size:1rem;
  border:1px solid transparent;
  transition:transform .25s ease, box-shadow .25s ease, background .25s ease;
  white-space:nowrap;
}
.btn-gold{
  background:linear-gradient(135deg, var(--gold-300), var(--gold-600));
  color:#241a02; box-shadow:0 16px 30px -14px rgba(201,162,39,.55);
}
.btn-gold:hover{transform:translateY(-3px); box-shadow:0 20px 36px -14px rgba(201,162,39,.7);}
.btn-outline-light{background:transparent; border-color:rgba(255,255,255,.4); color:#fff;}
.btn-outline-light:hover{background:rgba(255,255,255,.12); transform:translateY(-3px);}
.btn-teal{background:linear-gradient(135deg, var(--teal-500), var(--teal-600)); color:#fff; box-shadow:var(--shadow-md);}
.btn-teal:hover{transform:translateY(-3px); box-shadow:var(--shadow-lg);}
.btn-outline-dark{border-color:var(--line); color:var(--ink-950);}
.btn-outline-dark:hover{background:var(--ink-950); color:#fff;}

/* ---------- Header ---------- */
.site-header{
  position:fixed; inset-inline:0; top:0; z-index:100;
  padding:20px 0;
  transition:background .35s ease, padding .35s ease, box-shadow .35s ease;
}
.site-header.solid{
  background:rgba(4,22,28,.92);
  backdrop-filter:blur(10px);
  padding:13px 0;
  box-shadow:0 10px 30px -18px rgba(0,0,0,.5);
}
.site-header .container{display:flex; align-items:center; justify-content:space-between; gap:24px;}
.brand{display:flex; align-items:center; gap:13px;}
.brand img{width:48px; height:48px; object-fit:contain;}
.brand-name{color:#fff; font-family:var(--font-display); font-weight:700; font-size:1.2rem;}
.brand-name span{display:block; font-family:var(--font-util); font-weight:400; font-size:.72rem; color:var(--gold-300); letter-spacing:.03em;}

.main-nav{display:flex; align-items:center; gap:32px;}
.main-nav a{color:#EFF7F8; font-size:.96rem; font-weight:500; position:relative; padding:6px 0;}
.main-nav a::after{content:""; position:absolute; inset-inline-start:0; bottom:0; height:2px; width:0; background:var(--gold-500); transition:width .3s ease;}
.main-nav a:hover::after{width:100%;}
.lang-switch{
  border:1px solid rgba(228,199,102,.45) !important; border-radius:100px;
  padding:6px 16px !important; font-size:.82rem !important; color:var(--gold-300) !important;
  transition:background .2s ease;
}
.lang-switch:hover{background:rgba(228,199,102,.12);}
.lang-switch::after{display:none !important;}
.nav-toggle{display:none; background:none; border:none; color:#fff; font-size:1.7rem;}

/* ---------- Hero ---------- */
.hero{
  position:relative; min-height:100vh; display:flex; flex-direction:column; justify-content:center;
  background:
    radial-gradient(90% 60% at 50% -10%, rgba(20,157,168,.22), transparent 60%),
    linear-gradient(180deg, var(--ink-900) 0%, var(--ink-950) 100%);
  color:#fff; padding:160px 0 80px; overflow:hidden; text-align:center;
}
.hero-pattern{
  position:absolute; inset:0; opacity:.06; pointer-events:none;
  background-image:
    radial-gradient(circle, transparent 60%, rgba(228,199,102,.5) 61%, transparent 63%);
  background-size:120px 120px;
}
.hero-content{position:relative; z-index:2; max-width:820px; margin:0 auto;}
.hero h1{
  color:#fff; font-size:clamp(2.4rem, 5vw, 3.9rem); font-weight:700; margin-bottom:.45em;
}
.hero h1 em{
  font-style:normal;
  background:linear-gradient(90deg, var(--gold-300), var(--teal-300));
  -webkit-background-clip:text; background-clip:text; color:transparent;
}
.hero p.lead{font-size:1.15rem; color:#C7DCE1; max-width:620px; margin-inline:auto;}
.hero-ctas{display:flex; gap:16px; flex-wrap:wrap; justify-content:center; margin-top:30px;}

.quick-contact{display:flex; justify-content:center; margin:28px 0 6px;}
.quick-contact-link{
  display:inline-flex; align-items:center; gap:12px;
  background:rgba(255,255,255,.07); border:1px solid rgba(228,199,102,.35);
  padding:13px 24px; border-radius:100px; color:#fff; font-weight:700; font-size:.95rem;
  transition:background .25s ease, transform .25s ease;
}
.quick-contact-link:hover{background:rgba(255,255,255,.14); transform:translateY(-2px);}
.quick-contact-link .ic{
  width:34px; height:34px; border-radius:50%; background:var(--gold-500);
  display:flex; align-items:center; justify-content:center; flex:none;
}
.quick-contact-link .ic svg{width:16px; height:16px; stroke:#241a02;}

/* Service chips row under hero */
.hero-chips{
  display:flex; justify-content:center; flex-wrap:wrap; gap:16px;
  margin-top:56px; position:relative; z-index:2;
}
.hero-chip{
  display:flex; flex-direction:column; align-items:center; gap:10px;
  background:rgba(255,255,255,.05); border:1px solid rgba(255,255,255,.14);
  border-radius:18px; padding:20px 22px; min-width:120px;
  backdrop-filter:blur(6px);
  transition:transform .3s ease, background .3s ease;
}
.hero-chip:hover{transform:translateY(-6px); background:rgba(255,255,255,.1);}
.hero-chip .ic{
  width:52px; height:52px; border-radius:14px;
  background:linear-gradient(135deg, rgba(95,203,211,.28), rgba(228,199,102,.14));
  display:flex; align-items:center; justify-content:center;
}
.hero-chip .ic svg{width:26px; height:26px; stroke:var(--teal-300);}
.hero-chip span{color:#EFF7F8; font-size:.86rem; font-weight:600;}

.trust-row{
  position:relative; z-index:2;
  display:flex; justify-content:center; flex-wrap:wrap; gap:20px 56px;
  margin-top:58px; padding-top:30px; border-top:1px solid rgba(255,255,255,.14);
}
.trust-row .stat{text-align:center; border-inline-start:1px solid rgba(255,255,255,.16); padding-inline-start:32px;}
.trust-row .stat:first-child{border-inline-start:none; padding-inline-start:0;}
.trust-row .stat b{display:block; font-family:var(--font-display); font-size:1.9rem; color:#fff;}
.trust-row .stat span{font-family:var(--font-util); font-size:.82rem; color:#9FC3CA;}

.wave-divider{display:block; width:100%; line-height:0; position:absolute; left:0; right:0; bottom:0; z-index:1;}
.wave-divider svg{width:100%; height:80px; display:block;}

/* ---------- Section basics ---------- */
section{padding:112px 0;}
.section-head{max-width:700px; margin:0 auto 58px; text-align:center;}
.section-head p{color:var(--ink-soft); font-size:1.06rem;}
.bg-ink{background:var(--ink-950); color:#fff;}
.bg-ink h2, .bg-ink h3{color:#fff;}
.bg-ink .section-head p{color:#AFC9D0;}

/* ---------- Services ---------- */
.services-grid{display:grid; grid-template-columns:repeat(4,1fr); gap:26px;}
.service-card{
  background:#fff; border-radius:var(--radius); padding:38px 28px;
  border:1px solid var(--line); box-shadow:var(--shadow-md);
  transition:transform .3s ease, box-shadow .3s ease; position:relative; overflow:hidden;
}
.service-card:hover{transform:translateY(-8px); box-shadow:var(--shadow-lg);}
.service-card::before{
  content:""; position:absolute; inset-inline-start:0; top:0; bottom:0; width:4px;
  background:linear-gradient(180deg, var(--teal-500), var(--gold-500));
}
.service-card .icon{
  width:66px; height:66px; border-radius:18px;
  background:linear-gradient(135deg, var(--teal-100), #fff);
  display:flex; align-items:center; justify-content:center; margin-bottom:22px;
}
.service-card .icon svg{width:32px; height:32px; stroke:var(--teal-600);}
.service-card h3{font-size:1.16rem; margin-bottom:.4em;}
.service-card p{color:var(--ink-soft); font-size:.95rem; margin-bottom:0;}
.service-card .tag{position:absolute; top:24px; left:24px; font-family:var(--font-util); font-size:.68rem; color:#C9D3D6;}

/* ---------- Process / منهجيتنا ---------- */
.process-track{position:relative; display:grid; grid-template-columns:repeat(4,1fr); gap:0;}
.process-track::before{
  content:""; position:absolute; top:26px; inset-inline:6%; height:1px;
  background:repeating-linear-gradient(90deg, rgba(228,199,102,.5) 0 8px, transparent 8px 16px);
}
.process-step{padding:0 20px; text-align:center; position:relative;}
.process-step .num{
  width:54px; height:54px; border-radius:50%; margin:0 auto 18px;
  display:flex; align-items:center; justify-content:center;
  background:var(--ink-950); border:2px solid var(--gold-500);
  font-family:var(--font-display); font-size:1.2rem; color:var(--gold-300); position:relative; z-index:2;
}
.process-step h4{font-size:1.05rem;}
.process-step p{color:var #fff; font-size:.92rem;}

/* ---------- Why us ---------- */
.why-grid{display:grid; grid-template-columns:1fr 1fr; gap:64px; align-items:center;}
.why-list{list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:24px;}
.why-list li{display:flex; gap:16px; align-items:flex-start;}
.why-list .bullet{
  width:40px; height:40px; border-radius:12px; flex:none;
  background:linear-gradient(135deg, var(--teal-100), #fff); border:1px solid var(--line);
  display:flex; align-items:center; justify-content:center;
  color:var(--teal-600); font-family:var(--font-display); font-weight:700;
}
.why-visual{
  background:var(--ink-950); border-radius:26px; padding:40px; position:relative;
  aspect-ratio:4/5; overflow:hidden; display:flex; align-items:center; justify-content:center;
}
.why-visual svg{width:70%; position:relative; z-index:2;}
.why-visual .glow{position:absolute; width:80%; height:80%; border-radius:50%; background:radial-gradient(circle, rgba(20,157,168,.28), transparent 70%);}

/* ---------- Closing section: stats + CTA unified, no boxes ---------- */
.closing-section{position:relative; text-align:center; overflow:hidden;}
.closing-pattern{
  position:absolute; inset:0; opacity:.5; pointer-events:none;
  background:radial-gradient(60% 50% at 50% 0%, rgba(20,157,168,.16), transparent 70%);
}
.closing-stats{
  position:relative; z-index:2;
  display:flex; justify-content:center; flex-wrap:wrap; gap:24px 60px;
}
.closing-stats .stat{text-align:center; border-inline-start:1px solid rgba(255,255,255,.16); padding-inline-start:36px;}
.closing-stats .stat:first-child{border-inline-start:none; padding-inline-start:0;}
.closing-stats .stat b{display:block; font-family:var(--font-display); font-size:2.3rem; color:var(--gold-300);}
.closing-stats .stat span{font-family:var(--font-util); font-size:.85rem; color:#9FC3CA;}
.closing-divider{
  position:relative; z-index:2; width:60px; height:1px; margin:56px auto;
  background:linear-gradient(90deg, transparent, var(--gold-500), transparent);
}
.closing-cta{position:relative; z-index:2; max-width:560px; margin:0 auto;}
.closing-cta h3{color:#fff; font-size:1.9rem; margin-bottom:.35em;}
.closing-cta p{color:#B8D2D8; font-size:1.05rem; margin-bottom:28px;}

/* ---------- Contact ---------- */
.contact-grid{display:grid; grid-template-columns:1fr 1fr; gap:52px; align-items:start;}
.contact-info-card{background:var(--ink-950); color:#fff; border-radius:26px; padding:42px; height:100%;}
.contact-info-card h3{color:#fff;}
.contact-info-row{display:flex; gap:15px; align-items:flex-start; margin-bottom:24px; transition:transform .2s ease;}
a.contact-info-row:hover{transform:translateX(-4px); opacity:.92;}
[dir="rtl"] a.contact-info-row:hover{transform:translateX(4px);}
.contact-info-row .ic{width:42px; height:42px; border-radius:11px; background:rgba(228,199,102,.14); display:flex; align-items:center; justify-content:center; flex:none;}
.contact-info-row .ic svg{width:20px; height:20px; stroke:var(--gold-300);}
.contact-info-row b{display:block; color:#fff; font-size:.96rem;}
.contact-info-row span{color:#A9C4CA; font-size:.88rem;}

.contact-form{background:#fff; border-radius:26px; padding:42px; border:1px solid var(--line); box-shadow:var(--shadow-md);}
.form-row{display:grid; grid-template-columns:1fr 1fr; gap:18px;}
.field{margin-bottom:18px;}
.field label{display:block; font-size:.86rem; font-weight:700; margin-bottom:8px; color:var(--ink-950);}
.field input, .field select, .field textarea{
  width:100%; padding:14px 16px; border-radius:12px; border:1px solid var(--line);
  font-family:var(--font-body); font-size:.95rem; background:var(--pearl); color:var(--ink);
  transition:border-color .2s ease, box-shadow .2s ease;
}
.field input:focus, .field select:focus, .field textarea:focus{
  outline:none; border-color:var(--teal-500); box-shadow:0 0 0 3px var(--teal-100);
}
.field textarea{resize:vertical; min-height:110px;}
.form-note{font-size:.83rem; color:var(--ink-soft); margin-top:10px;}

/* ---------- Footer ---------- */
footer{background:var(--ink-950); color:#A9C4CA; padding:72px 0 26px;}
.footer-grid{display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:40px; padding-bottom:50px; border-bottom:1px solid rgba(255,255,255,.08);}
.footer-brand{display:flex; gap:13px; align-items:center; margin-bottom:18px;}
.footer-brand img{width:44px;}
.footer-brand b{color:#fff; font-family:var(--font-display);}
footer h4{color:#fff; font-size:.96rem; margin-bottom:16px;}
footer ul{list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:12px;}
footer a:hover{color:#fff;}
.footer-bottom{display:flex; justify-content:space-between; align-items:center; padding-top:24px; font-size:.86rem; flex-wrap:wrap; gap:10px;}
.footer-bottom .socials{display:flex; gap:12px;}
.footer-bottom .socials a{width:37px; height:37px; border-radius:50%; border:1px solid rgba(255,255,255,.15); display:flex; align-items:center; justify-content:center;}
.footer-bottom .socials svg{width:16px; height:16px; stroke:#A9C4CA;}

/* ---------- Utility ---------- */
.reveal{opacity:0; transform:translateY(28px); transition:opacity .7s ease, transform .7s ease;}
.reveal.in{opacity:1; transform:translateY(0);}

.whatsapp-float{
  position:fixed; bottom:26px; left:26px; z-index:90;
  width:60px; height:60px; border-radius:50%;
  background:linear-gradient(135deg,#25D366,#1DA851);
  display:flex; align-items:center; justify-content:center;
  box-shadow:0 16px 30px -10px rgba(0,0,0,.4);
  animation:pulse-btn 2.6s ease-in-out infinite;
}
.whatsapp-float svg{width:28px; height:28px; fill:#fff;}
@keyframes pulse-btn{
  0%,100%{box-shadow:0 16px 30px -10px rgba(37,211,102,.5);}
  50%{box-shadow:0 16px 30px -10px rgba(37,211,102,.85), 0 0 0 10px rgba(37,211,102,.08);}
}

/* ---------- Legal page ---------- */
.legal-page{padding:150px 0 100px;}
.legal-content{max-width:820px; margin:0 auto; background:#fff; border-radius:26px; padding:50px; box-shadow:var(--shadow-md); border:1px solid var(--line);}
.legal-content h2{margin-top:1.4em; font-size:1.3rem;}
.legal-content h2:first-child{margin-top:0;}
.legal-content ul{padding-inline-start:20px;}
.legal-content li{margin-bottom:8px; color:var(--ink-soft);}
.legal-content p{color:var(--ink-soft);}
.legal-updated{font-family:var(--font-util); font-size:.85rem; color:#9AA9AD; margin-bottom:30px;}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .services-grid{grid-template-columns:repeat(2,1fr);}
  .process-track{grid-template-columns:repeat(2,1fr); row-gap:44px;}
  .process-track::before{display:none;}
  .why-grid, .contact-grid{grid-template-columns:1fr;}
  .stats-band{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:860px){
  .main-nav{display:none;}
  .nav-toggle{display:block;}
}
@media (max-width:640px){
  section{padding:72px 0;}
  .hero{padding:130px 0 60px;}
  .services-grid{grid-template-columns:1fr;}
  .process-track{grid-template-columns:1fr;}
  .form-row{grid-template-columns:1fr;}
  .cta-banner{flex-direction:column; text-align:center;}
  .stats-band{grid-template-columns:1fr 1fr; padding:34px 24px;}
  .legal-content{padding:28px;}
  .hero-chips{gap:12px; margin-top:40px;}
  .hero-chip{min-width:100px; padding:16px 14px;}
  .hero-chip .ic{width:44px; height:44px;}
  .hero-chip .ic svg{width:22px; height:22px;}
  .hero-chip span{font-size:.78rem;}
  .quick-contact-link{padding:11px 18px; font-size:.85rem;}
  .trust-row{gap:16px 24px; margin-top:40px; padding-top:22px;}
  .trust-row .stat{padding-inline-start:18px;}
  .trust-row .stat b{font-size:1.5rem;}
  .trust-row .stat span{font-size:.72rem;}
  .closing-stats{gap:18px 26px;}
  .closing-stats .stat{padding-inline-start:20px;}
  .closing-stats .stat b{font-size:1.7rem;}
  .closing-stats .stat span{font-size:.72rem;}
  .closing-divider{margin:36px auto;}
  .closing-cta h3{font-size:1.4rem;}
  .closing-cta p{font-size:.92rem;}
}

/* Mobile nav drawer */
.mobile-nav{
  position:fixed; inset:0; background:var(--ink-950); z-index:200;
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:28px;
  transform:translateY(-100%); transition:transform .4s ease;
}
.mobile-nav.open{transform:translateY(0);}
.mobile-nav a{color:#fff; font-size:1.35rem; font-family:var(--font-display); font-weight:700;}
.mobile-nav .close-btn{position:absolute; top:24px; left:24px; background:none; border:none; color:#fff; font-size:2rem;}

/* =========================
   Back To Top
========================= */

.back-to-top {
  position: fixed;
  right: 28px;
  bottom: 28px;

  width: 50px;
  height: 50px;

  display: flex;
  align-items: center;
  justify-content: center;

  border-radius: 50%;

  background: rgba(15, 27, 35, 0.92);
  color: #E4C766;

  border: 1px solid rgba(228, 199, 102, 0.45);

  box-shadow:
    0 10px 30px rgba(0, 0, 0, 0.18),
    0 0 0 0 rgba(228, 199, 102, 0.25);

  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);

  text-decoration: none;

  opacity: 0;
  visibility: hidden;
  transform: translateY(15px);

  transition:
    opacity 0.35s ease,
    visibility 0.35s ease,
    transform 0.35s ease,
    background 0.3s ease,
    color 0.3s ease,
    box-shadow 0.3s ease;

  z-index: 999;

  animation: none;
}

.back-to-top svg {
  width: 21px;
  height: 21px;
  transition: transform 0.3s ease;
}

/* يظهر عند النزول */
.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* Hover */
.back-to-top:hover {
  background: #E4C766;
  color: #0F1B23;

  box-shadow:
    0 12px 35px rgba(0, 0, 0, 0.22),
    0 0 25px rgba(228, 199, 102, 0.25);

  transform: translateY(-4px);
}

.back-to-top:hover svg {
  transform: translateY(-2px);
}

/* تأثير بسيط عند الظهور */
.back-to-top.show {
  animation: topButtonIn 0.45s ease forwards;
}

@keyframes topButtonIn {
  from {
    opacity: 0;
    transform: translateY(15px) scale(0.85);
  }

  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* الجوال */
@media (max-width: 768px) {
  .back-to-top {
    right: 18px;
    bottom: 92px;

    width: 46px;
    height: 46px;
  }

  .back-to-top svg {
    width: 19px;
    height: 19px;
  }
}