/* ============================================================
   EXSS — Ex Smart Solutions
   Dark premium one-page theme
   ============================================================ */

:root{
  --bg:#080a0f;
  --bg-2:#0d1017;
  --bg-3:#11151e;
  --surface:#141925;
  --line:rgba(255,255,255,.08);
  --text:#eef1f6;
  --muted:#9aa3b2;
  --muted-2:#6b7384;
  --accent:#3aa6d8;
  --accent-2:#4f7bd6;
  --accent-soft:rgba(58,166,216,.14);
  --radius:16px;
  --radius-lg:24px;
  --maxw:1180px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:84px}
html{background:var(--bg)}
body{
  font-family:'Inter',system-ui,-apple-system,sans-serif;
  background:transparent;
  color:var(--text);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

/* ---------- Animated fluid gradient background (lightweight, low memory) ---------- */
.bg-anim{
  position:fixed;inset:0;z-index:-2;
  background-color:var(--bg);
  background-image:
    radial-gradient(40% 45% at 22% 28%, var(--c1) 0%, transparent 60%),
    radial-gradient(38% 42% at 78% 22%, var(--c2) 0%, transparent 60%),
    radial-gradient(45% 48% at 30% 82%, var(--c3) 0%, transparent 62%),
    radial-gradient(42% 45% at 82% 80%, var(--c4) 0%, transparent 62%);
  background-size:200% 200%;
  background-repeat:no-repeat;
  opacity:.85;
  animation:bg-flow 26s ease-in-out infinite;
}
.bg-anim::after{content:"";position:absolute;inset:0;background:rgba(8,10,15,.45)}
.bg-anim .blob{display:none}            /* legacy markup, no longer used */
.bg-anim.no-anim{animation:none}
@keyframes bg-flow{
  0%   {background-position:0% 50%, 100% 0%, 0% 100%, 100% 80%}
  50%  {background-position:60% 20%, 40% 60%, 80% 40%, 20% 60%}
  100% {background-position:0% 50%, 100% 0%, 0% 100%, 100% 80%}
}
@media (prefers-reduced-motion:reduce){.bg-anim{animation:none}}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- Typography ---------- */
h1,h2,h3{font-family:'Sora','Inter',sans-serif;line-height:1.12;letter-spacing:-.02em;font-weight:600}
.eyebrow{font-size:.8rem;letter-spacing:.18em;text-transform:uppercase;color:var(--muted-2);margin-bottom:14px;font-weight:600}
.eyebrow.accent{color:var(--accent)}
.section-title{font-size:clamp(1.7rem,3.4vw,2.7rem);color:#fff}
.lead{color:var(--muted);font-size:1.075rem;max-width:46ch}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:600;font-size:.95rem;border:1px solid transparent;border-radius:999px;
  padding:11px 22px;cursor:pointer;transition:all .25s var(--ease);font-family:inherit;
  white-space:nowrap;
}
.btn-lg{padding:15px 30px;font-size:1rem}
.btn-block{width:100%}
.btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;box-shadow:0 8px 24px -8px rgba(58,166,216,.6)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 30px -8px rgba(58,166,216,.7)}
.btn-ghost{background:transparent;color:var(--text);border-color:transparent}
.btn-ghost:hover{background:rgba(255,255,255,.06)}
.btn-outline{background:rgba(255,255,255,.03);color:#fff;border-color:var(--line)}
.btn-outline:hover{border-color:var(--accent);background:var(--accent-soft)}

/* ---------- Header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  transition:background .3s var(--ease),border-color .3s var(--ease),backdrop-filter .3s;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{background:rgba(8,10,15,.82);backdrop-filter:blur(14px);border-bottom-color:var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:84px}
.brand-logo{height:50px;width:auto}
.nav-actions{display:flex;align-items:center;gap:10px}
.lang-switch{display:flex;align-items:center;gap:6px;font-size:.82rem;color:var(--muted-2);margin-left:6px}
.lang-switch a{padding:2px 4px;transition:color .2s}
.lang-switch a.active{color:#fff;font-weight:700}
.lang-switch a:hover{color:var(--accent)}

.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px;margin-left:4px}
.nav-toggle span{width:22px;height:2px;background:#fff;border-radius:2px;transition:.3s var(--ease)}
.site-header.menu-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.site-header.menu-open .nav-toggle span:nth-child(2){opacity:0}
.site-header.menu-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.mobile-menu{
  display:none;flex-direction:column;gap:6px;padding:8px 24px 26px;
  background:rgba(10,12,18,.97);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);
  position:relative;z-index:2;
}

/* Blur overlay behind the mobile menu */
.mobile-overlay{
  position:fixed;inset:0;z-index:55;
  background:rgba(8,10,15,.45);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  opacity:0;pointer-events:none;transition:opacity .3s var(--ease);
}
.site-header.menu-open ~ .mobile-overlay{opacity:1;pointer-events:auto}
@media (min-width:721px){.mobile-overlay{display:none}}
.mm-link{padding:14px 4px;font-size:1.1rem;border-bottom:1px solid var(--line);color:var(--text)}
.mm-cta{margin-top:16px}
.mm-lang{margin-top:18px;font-size:1rem}

/* ---------- Hero ---------- */
.hero{
  position:relative;min-height:100vh;display:flex;align-items:center;
  background-size:cover;background-position:center;
}
.hero-inner{max-width:760px;padding-top:90px;padding-bottom:90px}
.hero-title{font-size:clamp(2.4rem,6vw,4.4rem);color:#fff;margin-bottom:22px}
.hero-sub{font-size:clamp(1.05rem,2vw,1.25rem);color:var(--muted);max-width:54ch;margin-bottom:34px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px}
.scroll-hint{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);width:26px;height:42px;border:2px solid rgba(255,255,255,.3);border-radius:14px;display:flex;justify-content:center}
.scroll-hint span{width:4px;height:8px;background:#fff;border-radius:2px;margin-top:8px;animation:scrolldot 1.6s infinite}
@keyframes scrolldot{0%{opacity:0;transform:translateY(0)}40%{opacity:1}80%{opacity:0;transform:translateY(12px)}}

/* ---------- Sections ---------- */
.section{padding:clamp(70px,10vw,130px) 0}
.section-head{max-width:640px;margin:0 auto 56px;text-align:center}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.stats{display:flex;gap:36px;margin-top:34px;flex-wrap:wrap}
.stat{display:flex;flex-direction:column}
.stat-value{font-family:'Sora';font-size:2.1rem;font-weight:700;color:#fff;line-height:1}
.stat-label{font-size:.85rem;color:var(--muted-2);margin-top:6px}

/* ---------- Services cards ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;transition:transform .35s var(--ease),border-color .35s}
.card:hover{transform:translateY(-6px);border-color:rgba(58,166,216,.4)}
.card-img{height:200px;background-size:cover;background-position:center}
.card-body{padding:26px}
.card-title{font-size:1.25rem;color:#fff;margin-bottom:10px}
.card-text{color:var(--muted);font-size:.97rem}
.section-hint{color:var(--muted-2);font-size:.9rem;margin-top:10px}
.clickable{cursor:pointer}
.clickable:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.card-more{display:inline-block;margin-top:14px;color:var(--accent);font-weight:600;font-size:.9rem;transition:transform .25s var(--ease)}
.card:hover .card-more,.project:hover .card-more{transform:translateX(4px)}
.project .card-more{margin-top:10px}

/* ---------- Projects ---------- */
.project-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
/* Projects carousel (when more than 3) */
.proj-marquee{
  overflow:hidden;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 5%,#000 95%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 5%,#000 95%,transparent);
}
.proj-track{display:flex;width:max-content;animation:proj-scroll 45s linear infinite}
.proj-track .project{width:340px;margin-right:24px;flex:none}
.proj-marquee:hover .proj-track{animation-play-state:paused}
@keyframes proj-scroll{from{transform:translateX(0)}to{transform:translateX(-50%)}}
@media (prefers-reduced-motion:reduce){.proj-track{animation:none}}
.project{position:relative;min-height:380px;border-radius:var(--radius-lg);overflow:hidden;background-size:cover;background-position:center;display:flex;align-items:flex-end;border:1px solid var(--line);transition:transform .4s var(--ease)}
.project:hover{transform:translateY(-6px)}
.project-meta{padding:26px}
.project-tag{display:inline-block;font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);margin-bottom:8px}
.project-title{font-size:1.3rem;color:#fff}

/* ---------- CTA band ---------- */
/* ---------- Partners ---------- */
.partners .section-head{margin-bottom:44px}
.logo-row{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:22px}
.logo-marquee{
  overflow:hidden;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
}
.logo-track{display:flex;width:max-content;animation:logo-scroll 30s linear infinite}
.logo-track .logo-item{margin-right:22px}
.logo-marquee:hover .logo-track{animation-play-state:paused}
.logo-item{
  flex:none;display:flex;align-items:center;justify-content:center;
  background:#fff;border-radius:14px;height:90px;width:186px;padding:18px 26px;
}
.logo-item img{max-height:50px;max-width:100%;width:auto;object-fit:contain}
@keyframes logo-scroll{from{transform:translateX(0)}to{transform:translateX(-50%)}}
@media (prefers-reduced-motion:reduce){.logo-track{animation:none}}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.contact-center{max-width:560px;margin:0 auto;text-align:center}
.contact-center .lead{margin:16px auto 26px}
.contact-center .contact-list{display:inline-flex;text-align:left;margin-bottom:30px}
.contact-info .lead{margin:18px 0 26px}
.contact-list{list-style:none;display:flex;flex-direction:column;gap:14px}
.contact-list li{display:flex;align-items:center;gap:12px;color:var(--muted)}
.contact-list span{width:34px;height:34px;display:flex;align-items:center;justify-content:center;background:var(--accent-soft);color:var(--accent);border-radius:10px;font-size:1rem}
.contact-list a:hover{color:var(--accent)}

/* ---------- Form ---------- */
.contact-form{display:flex;flex-direction:column;gap:16px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:30px}
.field{display:flex;flex-direction:column;gap:7px}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field label{font-size:.82rem;color:var(--muted);font-weight:500}
.field input,.field textarea{
  background:var(--bg-2);border:1px solid var(--line);border-radius:12px;
  padding:13px 15px;color:var(--text);font-family:inherit;font-size:.96rem;transition:border-color .2s,box-shadow .2s;
}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.field textarea{resize:vertical;min-height:110px}
.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.form-status{font-size:.92rem;min-height:1.2em;margin-top:2px}
.form-status.ok{color:#52c08a}
.form-status.err{color:#e2737a}

/* ---------- Footer ---------- */
.site-footer{background:transparent;border-top:1px solid var(--line);padding:50px 0 40px;text-align:center}
.footer-logo{height:26px;width:auto;margin:0 auto 16px;opacity:.9}
.footer-tagline{color:var(--muted);max-width:40ch;margin:0 auto 10px}
.footer-rights{color:var(--muted-2);font-size:.85rem}

/* ---------- Modal ---------- */
.modal{position:fixed;inset:0;z-index:100;display:none}
.modal.open{display:block}
.modal-backdrop{position:absolute;inset:0;background:rgba(4,6,10,.7);backdrop-filter:blur(6px);animation:fade .3s}
.modal-dialog{
  position:relative;max-width:560px;margin:6vh auto;background:var(--bg-3);
  border:1px solid var(--line);border-radius:var(--radius-lg);padding:36px;
  box-shadow:0 40px 90px -20px rgba(0,0,0,.7);animation:pop .35s var(--ease);
  max-height:88vh;overflow:auto;
}
.modal-lead{margin:10px 0 22px}
.detail-img{height:200px;border-radius:var(--radius);background-size:cover;background-position:center;margin-bottom:20px;background-color:#000}
.detail-text{color:var(--muted);font-size:1rem;white-space:pre-line;margin:14px 0 24px;line-height:1.7}
#detailSub{margin-bottom:8px}
.modal-close{position:absolute;top:10px;right:10px;width:42px;height:42px;display:flex;align-items:center;justify-content:center;background:rgba(255,255,255,.07);border:1px solid var(--line);border-radius:50%;color:var(--text);font-size:1.6rem;line-height:1;cursor:pointer;transition:background .2s,color .2s;z-index:2}
.modal-close:hover{background:rgba(255,255,255,.14);color:#fff}
.modal-close-btn{margin-top:18px}
@keyframes fade{from{opacity:0}to{opacity:1}}
@keyframes pop{from{opacity:0;transform:translateY(20px) scale(.98)}to{opacity:1;transform:none}}

/* ---------- Scroll reveal ---------- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media (max-width:900px){
  .about-grid,.contact-grid{grid-template-columns:1fr;gap:34px}
  .cards,.project-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:720px){
  .nav-actions .btn-ghost,.nav-actions .btn-primary,.nav-actions>.lang-switch{display:none}
  .nav-toggle{display:flex}
  .site-header.menu-open .mobile-menu{display:flex}
  .cards,.project-grid{grid-template-columns:1fr}
  .field-row{grid-template-columns:1fr}
  .hero-inner{padding-top:110px}
  .stats{gap:24px}
  .modal-dialog{margin:0;min-height:100vh;border-radius:0;border:0}
  /* Projects: stack vertically with spacing (no carousel) on mobile */
  .proj-marquee{overflow:visible;-webkit-mask-image:none;mask-image:none}
  .proj-track{flex-direction:column;width:auto;animation:none}
  .proj-track .project{width:auto;margin:0 0 22px;min-height:320px}
  .proj-track .project.dup{display:none}
  /* Partners: static centered wrap (no auto-scroll) on mobile */
  .logo-marquee{overflow:visible;-webkit-mask-image:none;mask-image:none}
  .logo-track{flex-wrap:wrap;justify-content:center;width:auto;animation:none}
  .logo-track .logo-item{margin:0 10px 14px}
  .logo-track .logo-item.dup{display:none}
  /* Keep mobile snappy: stop the continuous background animation */
  .bg-anim{animation:none}
}
@media (prefers-reduced-motion:reduce){
  *{scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none;transition:none}
  .scroll-hint span{animation:none}
}