/* =========================================================
   Sahara Digital System — Design tokens
   ========================================================= */
:root{
  --bg:            #0a1120;
  --bg-alt:        #0d1729;
  --surface:       #121d33;
  --surface-2:     #16233d;
  --border:        rgba(255,255,255,0.08);
  --border-soft:   rgba(255,255,255,0.05);
  --text:          #eaf0f7;
  --text-muted:    #93a1b8;
  --text-faint:    #5f6f8a;
  --accent:        #00b396;
  --accent-hover:  #12d6b6;
  --accent-soft:   rgba(0,179,150,0.12);
  --live:          #ff4757;

  --font-display:  'Plus Jakarta Sans', system-ui, sans-serif;
  --font-mono:     'JetBrains Mono', ui-monospace, monospace;

  --radius-sm:  10px;
  --radius-md:  16px;
  --radius-lg:  24px;

  --container: 1200px;
  --gutter: clamp(20px, 5vw, 64px);
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{ animation-duration:0.01ms !important; animation-iteration-count:1 !important; transition-duration:0.01ms !important; scroll-behavior:auto !important; }
}

body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-display);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

img{ max-width:100%; display:block; }

a{ color:inherit; text-decoration:none; }

h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:800;
  line-height:1.12;
  margin:0 0 0.5em;
  letter-spacing:-0.02em;
}

h2{ font-size:clamp(1.7rem, 3.2vw, 2.5rem); }
h3{ font-size:1.15rem; font-weight:700; }
h4{ font-size:1.05rem; font-weight:700; }

p{ margin:0 0 1em; color:var(--text-muted); }

.skip-link{
  position:absolute; left:-999px; top:0; z-index:200;
  background:var(--accent); color:#03140f; padding:12px 18px;
  border-radius:0 0 8px 0; font-weight:700;
}
.skip-link:focus{ left:0; }

:focus-visible{
  outline:2px solid var(--accent-hover);
  outline-offset:3px;
  border-radius:4px;
}

.section-header{
  max-width:640px;
  margin:0 auto 48px;
  text-align:center;
}
.eyebrow{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:0.78rem;
  font-weight:600;
  letter-spacing:0.12em;
  text-transform:uppercase;
  color:var(--accent);
  background:var(--accent-soft);
  border:1px solid rgba(0,179,150,0.25);
  padding:5px 12px;
  border-radius:999px;
  margin-bottom:14px;
}
.section-header p{ margin-top:10px; }

section{ padding:96px var(--gutter); max-width:var(--container); margin:0 auto; }

/* =========================================================
   Navbar
   ========================================================= */
nav{
  position:sticky; top:0; z-index:100;
  display:flex; align-items:center; justify-content:space-between;
  padding:16px var(--gutter);
  background:rgba(10,17,32,0.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border-soft);
}
.logo-container{
  display:flex; align-items:center; gap:10px;
  font-family:var(--font-mono);
  font-weight:600;
  font-size:1rem;
  letter-spacing:0.08em;
}
.logo-mark{
  display:grid; place-items:center;
  width:34px; height:34px;
  background:linear-gradient(135deg, var(--accent), #007a68);
  color:#03140f;
  border-radius:8px;
  font-family:var(--font-mono);
  font-weight:700;
  font-size:0.85rem;
}
.nav-links{
  list-style:none; display:flex; align-items:center; gap:28px;
  margin:0; padding:0;
}
.nav-links a:not(.btn-nav){
  font-size:0.92rem; color:var(--text-muted); font-weight:500;
  transition:color .2s ease;
}
.nav-links a:not(.btn-nav):hover{ color:var(--text); }

.btn-nav{
  padding:9px 16px;
  border-radius:8px;
  font-size:0.88rem;
  font-weight:600;
  border:1px solid var(--border);
  transition:all .2s ease;
  display:inline-flex; align-items:center;
}
.nav-links li:last-child .btn-nav{
  background:var(--accent);
  color:#03140f;
  border-color:var(--accent);
}
.nav-links li:last-child .btn-nav:hover{ background:var(--accent-hover); border-color:var(--accent-hover); }

.nav-toggle{
  display:none;
  background:none; border:1px solid var(--border);
  color:var(--text);
  width:40px; height:40px;
  border-radius:8px;
  font-size:1.1rem;
  cursor:pointer;
}

/* =========================================================
   Buttons
   ========================================================= */
.btn-primary, .btn-secondary{
  display:inline-flex; align-items:center; gap:10px;
  padding:13px 24px;
  border-radius:10px;
  font-weight:700;
  font-size:0.95rem;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s ease, background .2s ease, border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--accent);
  color:#03140f;
}
.btn-primary:hover{ background:var(--accent-hover); transform:translateY(-2px); }
.btn-secondary{
  background:transparent;
  color:var(--text);
  border-color:var(--border);
}
.btn-secondary:hover{ border-color:var(--accent); color:var(--accent-hover); transform:translateY(-2px); }

/* =========================================================
   Hero
   ========================================================= */
.hero{
  position:relative;
  padding-top:88px;
  padding-bottom:88px;
  overflow:hidden;
}
.blob{
  position:absolute;
  border-radius:50%;
  filter:blur(90px);
  opacity:0.35;
  z-index:0;
  pointer-events:none;
}
.blob-1{
  width:420px; height:420px;
  background:var(--accent);
  top:-140px; right:-120px;
}
.blob-2{
  width:320px; height:320px;
  background:#2a5bd7;
  bottom:-100px; left:-80px;
  opacity:0.25;
}

.hero-grid{
  position:relative; z-index:1;
  display:grid;
  grid-template-columns:1.05fr 0.95fr;
  gap:56px;
  align-items:center;
}

.hero-badge{
  display:inline-flex; align-items:center; gap:8px;
  font-family:var(--font-mono);
  font-size:0.78rem;
  color:var(--text-muted);
  border:1px solid var(--border);
  border-radius:999px;
  padding:6px 14px;
  margin-bottom:22px;
}
.hero-badge .dot{
  width:7px; height:7px; border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 3px var(--accent-soft);
}

.hero-content h1{
  font-size:clamp(2.1rem, 5vw, 3.4rem);
  margin-bottom:0.4em;
}
.hero-content h1 span{ color:var(--accent); }
.hero-content > p{
  font-size:1.08rem;
  max-width:520px;
  margin-bottom:2em;
}
.hero-actions{
  display:flex; flex-wrap:wrap; gap:14px;
  margin-bottom:44px;
}
.hero-trust{
  display:flex; flex-wrap:wrap; gap:28px;
}
.hero-trust div{
  font-size:0.85rem;
  color:var(--text-faint);
}
.hero-trust strong{
  display:block;
  font-family:var(--font-mono);
  font-size:1.3rem;
  color:var(--text);
  font-weight:600;
}

/* Hero visual "system panel" — signature element */
.hero-visual{
  position:relative; z-index:1;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:22px;
  font-family:var(--font-mono);
  box-shadow:0 30px 60px -20px rgba(0,0,0,0.5);
}
.panel-header{
  display:flex; align-items:center; justify-content:space-between;
  padding-bottom:16px; margin-bottom:16px;
  border-bottom:1px solid var(--border-soft);
}
.panel-dots{ display:flex; gap:6px; }
.panel-dots span{
  width:9px; height:9px; border-radius:50%;
  background:var(--text-faint);
}
.panel-dots span:first-child{ background:var(--live); }
.panel-dots span:nth-child(2){ background:#f5c451; }
.panel-dots span:last-child{ background:var(--accent); }
.panel-status{
  display:flex; align-items:center; gap:6px;
  font-size:0.75rem; color:var(--accent);
}
.panel-row{
  display:flex; align-items:center; justify-content:space-between;
  padding:12px 0;
  border-bottom:1px solid var(--border-soft);
  font-size:0.85rem;
}
.panel-row:last-child{ border-bottom:none; }
.panel-row .label{ color:var(--text-muted); }
.panel-row .value{ color:var(--text); font-weight:600; }
.bar-track{
  height:6px; border-radius:999px;
  background:var(--surface-2);
  margin-top:8px;
  overflow:hidden;
}
.bar-fill{
  height:100%;
  background:linear-gradient(90deg, var(--accent), var(--accent-hover));
  border-radius:999px;
}

/* =========================================================
   Services
   ========================================================= */
.services-grid{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:24px;
}
.service-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:28px;
  transition:transform .25s ease, border-color .25s ease;
}
.service-card:hover{
  transform:translateY(-4px);
  border-color:rgba(0,179,150,0.35);
}
.icon-badge{
  width:44px; height:44px;
  display:grid; place-items:center;
  border-radius:10px;
  background:var(--accent-soft);
  color:var(--accent);
  font-size:1.1rem;
  margin-bottom:18px;
}
.service-card p{ font-size:0.92rem; }
.tag-list{ display:flex; flex-wrap:wrap; gap:8px; margin-top:16px; }
.tag-list span{
  font-family:var(--font-mono);
  font-size:0.72rem;
  color:var(--text-muted);
  border:1px solid var(--border);
  border-radius:6px;
  padding:4px 9px;
}

/* =========================================================
   Process
   ========================================================= */
.process-grid{
  display:grid;
  grid-template-columns:repeat(4, 1fr);
  gap:24px;
}
.process-step{
  position:relative;
  padding:26px 22px;
  border-left:2px solid var(--border);
}
.process-step .num{
  font-family:var(--font-mono);
  font-size:0.85rem;
  color:var(--accent);
  margin-bottom:10px;
}
.process-step p{ font-size:0.9rem; margin:0; }

/* =========================================================
   Stats
   ========================================================= */
.stats{
  display:grid;
  grid-template-columns:repeat(4, 1fr);
  gap:24px;
  background:var(--bg-alt);
  border-top:1px solid var(--border-soft);
  border-bottom:1px solid var(--border-soft);
  max-width:none;
  padding:64px var(--gutter);
}
.stat-item{ text-align:center; }
.counter{
  font-family:var(--font-mono);
  font-size:clamp(2rem, 4vw, 2.8rem);
  color:var(--accent);
  margin-bottom:6px;
}
.stat-item p{ font-size:0.85rem; margin:0; color:var(--text-muted); }

/* =========================================================
   About
   ========================================================= */
.about-grid{
  display:grid;
  grid-template-columns:1.1fr 0.9fr;
  gap:56px;
  align-items:center;
}
.about-list{ list-style:none; margin:0; padding:0; display:grid; gap:12px; }
.about-list li{
  display:flex; align-items:flex-start; gap:10px;
  font-size:0.92rem; color:var(--text-muted);
}
.about-list i{ color:var(--accent); margin-top:3px; }

.about-visual{ display:grid; gap:12px; }
.industry-row{
  display:flex; align-items:center; gap:14px;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  padding:16px 18px;
  font-size:0.92rem;
  font-weight:600;
}
.industry-row i{
  width:32px; height:32px;
  display:grid; place-items:center;
  border-radius:8px;
  background:var(--accent-soft);
  color:var(--accent);
  font-size:0.9rem;
}

/* =========================================================
   Testimonials
   ========================================================= */
.testimonial-grid{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:24px;
}
.testimonial-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:26px;
}
.stars{ color:#f5c451; letter-spacing:2px; margin-bottom:14px; font-size:0.9rem; }
.quote{ font-size:0.92rem; color:var(--text); margin-bottom:20px; }
.testimonial-author{ display:flex; align-items:center; gap:12px; }
.avatar{
  width:40px; height:40px;
  border-radius:50%;
  background:linear-gradient(135deg, var(--accent), #2a5bd7);
  color:#03140f;
  display:grid; place-items:center;
  font-family:var(--font-mono);
  font-weight:700;
  font-size:0.8rem;
}
.testimonial-author strong{ display:block; font-size:0.88rem; }
.testimonial-author span{ font-size:0.78rem; color:var(--text-faint); }

/* =========================================================
   FAQ
   ========================================================= */
.faq-list{ display:grid; gap:12px; max-width:760px; margin:0 auto; }
.faq-item{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  overflow:hidden;
}
.faq-question{
  width:100%;
  display:flex; align-items:center; justify-content:space-between;
  gap:16px;
  background:none; border:none;
  color:var(--text);
  font-family:var(--font-display);
  font-size:0.96rem;
  font-weight:600;
  text-align:left;
  padding:18px 20px;
  cursor:pointer;
}
.faq-question i{ color:var(--accent); transition:transform .25s ease; flex-shrink:0; }
.faq-item.open .faq-question i{ transform:rotate(45deg); }
.faq-answer{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq-item.open .faq-answer{ max-height:220px; }
.faq-answer p{ padding:0 20px 18px; margin:0; font-size:0.9rem; }

/* =========================================================
   CTA band
   ========================================================= */
.cta-band{
  text-align:center;
  background:linear-gradient(135deg, rgba(0,179,150,0.14), rgba(42,91,215,0.10));
  border:1px solid rgba(0,179,150,0.25);
  border-radius:var(--radius-lg);
  padding:56px var(--gutter);
}
.cta-band h2{ margin-bottom:0.3em; }
.cta-band p{ max-width:480px; margin:0 auto 28px; }

/* =========================================================
   Contact
   ========================================================= */
.contact-wrap{
  display:grid;
  grid-template-columns:0.85fr 1.15fr;
  gap:32px;
  align-items:start;
}
.contact-info{ display:grid; gap:20px; }
.contact-info-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:24px;
}
.contact-list{ list-style:none; margin:0; padding:0; display:grid; gap:18px; }
.contact-list li{ display:flex; align-items:flex-start; gap:14px; }
.contact-list i{
  width:34px; height:34px; flex-shrink:0;
  display:grid; place-items:center;
  border-radius:8px;
  background:var(--accent-soft);
  color:var(--accent);
}
.contact-list strong{ display:block; font-size:0.88rem; margin-bottom:2px; }
.contact-list a{ display:block; font-size:0.9rem; color:var(--text-muted); }
.contact-list a:hover{ color:var(--accent-hover); }

.form-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:28px;
}
.form-row{ display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.form-group{ margin-bottom:16px; }
.form-group label{
  display:block; font-size:0.82rem; font-weight:600;
  margin-bottom:7px; color:var(--text-muted);
}
.req{ color:var(--live); }
.form-group input, .form-group textarea{
  width:100%;
  background:var(--bg-alt);
  border:1px solid var(--border);
  border-radius:8px;
  padding:12px 14px;
  color:var(--text);
  font-family:var(--font-display);
  font-size:0.92rem;
}
.form-group textarea{ min-height:120px; resize:vertical; }
.form-group input:focus, .form-group textarea:focus{
  outline:none; border-color:var(--accent);
}
.form-msg{ margin-top:14px; font-size:0.85rem; min-height:1em; }
.form-msg.success{ color:var(--accent-hover); }
.form-msg.error{ color:var(--live); }

/* =========================================================
   Footer
   ========================================================= */
footer{
  background:var(--bg-alt);
  border-top:1px solid var(--border-soft);
  padding:72px var(--gutter) 28px;
}
.footer-grid{
  max-width:var(--container);
  margin:0 auto;
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand h2{ font-size:1.1rem; letter-spacing:0.04em; }
.footer-brand p{ font-size:0.88rem; max-width:320px; }
.footer-social{ display:flex; gap:10px; margin-top:18px; }
.footer-social a{
  width:36px; height:36px;
  display:grid; place-items:center;
  border:1px solid var(--border);
  border-radius:8px;
  color:var(--text-muted);
  transition:all .2s ease;
}
.footer-social a:hover{ color:var(--accent); border-color:var(--accent); }

.footer-title{
  font-size:0.82rem;
  text-transform:uppercase;
  letter-spacing:0.08em;
  color:var(--text-faint);
  margin-bottom:16px;
}
.footer-links{ list-style:none; margin:0; padding:0; display:grid; gap:10px; }
.footer-links a{ font-size:0.9rem; color:var(--text-muted); }
.footer-links a:hover{ color:var(--accent-hover); }

.footer-bottom{
  max-width:var(--container);
  margin:0 auto;
  display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between;
  gap:14px;
  padding-top:24px;
  border-top:1px solid var(--border-soft);
}
.footer-bottom p{ margin:0; font-size:0.82rem; color:var(--text-faint); }
.footer-bottom-links{ list-style:none; display:flex; gap:22px; margin:0; padding:0; }
.footer-bottom-links a{ font-size:0.82rem; color:var(--text-faint); }
.footer-bottom-links a:hover{ color:var(--accent-hover); }

/* =========================================================
   Back to top
   ========================================================= */
.back-to-top{
  position:fixed; right:22px; bottom:22px; z-index:90;
  width:44px; height:44px;
  display:grid; place-items:center;
  background:var(--accent);
  color:#03140f;
  border:none; border-radius:50%;
  cursor:pointer;
  opacity:0; visibility:hidden; transform:translateY(8px);
  transition:opacity .25s ease, transform .25s ease, visibility .25s ease;
  box-shadow:0 10px 24px -8px rgba(0,0,0,0.5);
}
.back-to-top.visible{ opacity:1; visibility:visible; transform:translateY(0); }

/* =========================================================
   Responsive — tablet
   ========================================================= */
@media (max-width: 980px){
  section{ padding:72px var(--gutter); }
  .hero-grid{ grid-template-columns:1fr; }
  .hero-visual{ order:-1; max-width:480px; margin:0 auto; width:100%; }
  .services-grid{ grid-template-columns:repeat(2, 1fr); }
  .process-grid{ grid-template-columns:repeat(2, 1fr); }
  .stats{ grid-template-columns:repeat(2, 1fr); row-gap:36px; }
  .about-grid{ grid-template-columns:1fr; }
  .about-visual{ order:-1; }
  .testimonial-grid{ grid-template-columns:1fr; }
  .contact-wrap{ grid-template-columns:1fr; }
  .footer-grid{ grid-template-columns:1fr 1fr; row-gap:36px; }
}

/* =========================================================
   Responsive — mobile
   ========================================================= */
@media (max-width: 720px){
  nav{ padding:14px 20px; }
  .nav-toggle{ display:grid; place-items:center; }
  .nav-links{
    position:fixed; inset:64px 0 0 0;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    background:var(--bg);
    padding:12px 20px 28px;
    transform:translateY(-8px);
    opacity:0; visibility:hidden;
    transition:opacity .2s ease, transform .2s ease, visibility .2s ease;
    overflow-y:auto;
  }
  .nav-links.open{ opacity:1; visibility:visible; transform:translateY(0); }
  .nav-links li{ border-bottom:1px solid var(--border-soft); }
  .nav-links a:not(.btn-nav){ display:block; padding:16px 4px; }
  .nav-links .btn-nav{ display:flex; justify-content:center; margin:14px 0 0; }
  .btn-careers{ margin-right:0 !important; }

  section{ padding:56px 20px; }
  .section-header{ margin-bottom:32px; }

  .hero{ padding-top:48px; padding-bottom:48px; }
  .hero-actions{ flex-direction:column; align-items:stretch; }
  .hero-actions a{ justify-content:center; }
  .hero-trust{ gap:20px 28px; }

  .services-grid{ grid-template-columns:1fr; }
  .process-grid{ grid-template-columns:1fr; }
  .stats{ grid-template-columns:repeat(2, 1fr); padding:48px 20px; gap:28px; }
  .footer-grid{ grid-template-columns:1fr; gap:32px; }
  .footer-bottom{ flex-direction:column; align-items:flex-start; }
  .form-row{ grid-template-columns:1fr; }
  .contact-info-card, .form-card{ padding:22px; }
  .cta-band{ padding:44px 22px; }
  .back-to-top{ right:16px; bottom:16px; }
}

@media (max-width: 380px){
  .hero-trust{ flex-direction:column; gap:14px; }
}