/* =========================================================
   NextGen Systems — Landing page
   Tokens
   Color:  --navy-950 #05090F · --navy-900 #0A1628 (logo bg) · --navy-800 #101E36
           --blue-600 #1E5FA8 (logo blue) · --blue-400 #4C9AE8 (logo bright chevron)
           --ice #EAF1FA · --gray-400 #8FA0B5 (logo "SYSTEMS" gray)
   Type:   Display  → 'Space Grotesk' (geometric, technical)
           Body     → 'Inter'
           Mono/UI  → 'JetBrains Mono' (labels, eyebrows, data — circuit-board register)
   ========================================================= */

:root{
  --navy-950:#05090F;
  --navy-900:#0A1628;
  --navy-850:#0D1B30;
  --navy-800:#122036;
  --navy-700:#1A2C46;
  --blue-600:#1E5FA8;
  --blue-500:#2E74C4;
  --blue-400:#4C9AE8;
  --ice:#EAF1FA;
  --white:#FFFFFF;
  --gray-400:#8FA0B5;
  --gray-500:#6E829A;

  --font-display:'Space Grotesk', 'Inter', sans-serif;
  --font-body:'Inter', -apple-system, sans-serif;
  --font-mono:'JetBrains Mono', 'SFMono-Regular', monospace;

  --container:1240px;
  --nav-h:76px;

  --ease:cubic-bezier(.16,.8,.24,1);
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{ animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; scroll-behavior:auto !important; }
}

body{
  margin:0;
  background:var(--navy-950);
  color:var(--ice);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:600;
  line-height:1.1;
  margin:0 0 .5em;
  letter-spacing:-.01em;
}

p{ margin:0 0 1em; color:var(--gray-400); }

a{ color:inherit; text-decoration:none; }
img{ max-width:100%; display:block; }
ul,ol{ margin:0; padding:0; list-style:none; }
button{ font-family:inherit; cursor:pointer; }
input,textarea,select{ font-family:inherit; }

::selection{ background:var(--blue-500); color:var(--white); }

:focus-visible{
  outline:2px solid var(--blue-400);
  outline-offset:3px;
  border-radius:4px;
}

.eyebrow{
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--blue-400);
  margin:0 0 14px;
  display:inline-block;
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-family:var(--font-body);
  font-weight:600;
  font-size:15px;
  padding:14px 26px;
  border-radius:100px;
  border:1px solid transparent;
  transition:transform .35s var(--ease), background .3s, border-color .3s, color .3s;
  white-space:nowrap;
}
.btn:hover{ transform:translateY(-2px); }
.btn--primary{ background:var(--blue-400); color:var(--navy-950); }
.btn--primary:hover{ background:var(--white); }
.btn--ghost{ border-color:rgba(234,241,250,.3); color:var(--ice); }
.btn--ghost:hover{ border-color:var(--ice); }
.btn--outline{ border-color:var(--accent, var(--blue-400)); color:var(--accent, var(--blue-400)); }
.btn--outline:hover{ background:var(--accent, var(--blue-400)); color:var(--navy-950); }
.btn--block{ width:100%; }

/* ---------- Reveal on scroll ---------- */
.reveal{
  opacity:0;
  transform:translateY(28px);
  transition:opacity .8s var(--ease), transform .8s var(--ease);
}
.reveal.is-visible{ opacity:1; transform:translateY(0); }

/* =========================================================
   Top bar
   ========================================================= */
.topbar{
  position:fixed;
  top:0; left:0; right:0;
  z-index:65;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:18px;
  flex-wrap:wrap;
  background:var(--blue-600);
  color:var(--white);
  font-size:13.5px;
  padding:10px 44px 10px 16px;
  text-align:center;
}
.topbar p{ margin:0; color:var(--white); }
.topbar__cta{
  font-family:var(--font-mono);
  font-size:12.5px;
  text-decoration:underline;
  text-underline-offset:3px;
  flex-shrink:0;
}
.topbar__close{
  position:absolute;
  right:10px; top:50%; transform:translateY(-50%);
  background:transparent; border:0; color:var(--white);
  font-size:20px; line-height:1; padding:6px;
}
.topbar.is-hidden{ display:none; }

/* Decorative background circuit (fixed, subtle) */
.bg-circuit{
  position:fixed; inset:0; width:100%; height:100%;
  pointer-events:none; z-index:0; opacity:.35;
}
.bg-circuit__line{
  fill:none; stroke:var(--blue-600); stroke-width:1.5; opacity:.25;
}

/* =========================================================
   Nav
   ========================================================= */
.nav{
  position:fixed; top:var(--topbar-h, 0px); left:0; right:0; z-index:50;
  height:var(--nav-h);
  transition:background .4s var(--ease), border-color .4s, box-shadow .4s, top .35s var(--ease);
  border-bottom:1px solid transparent;
}
.nav.is-scrolled{
  background:rgba(5,9,15,.82);
  backdrop-filter:blur(14px);
  border-color:rgba(234,241,250,.08);
}
.nav__inner{
  max-width:var(--container);
  margin:0 auto;
  height:100%;
  padding:0 28px;
  display:flex;
  align-items:center;
  gap:32px;
}
.nav__brand{ display:flex; align-items:center; flex-shrink:0; }
.nav__logo{ height:34px; width:auto; }
.nav__links{
  display:flex;
  align-items:center;
  gap:28px;
  margin-right:auto;
  font-size:14.5px;
  font-weight:500;
}
.nav__links a{ opacity:.82; transition:opacity .25s; position:relative; }
.nav__links a:hover{ opacity:1; }
.nav__cta{ padding:10px 22px; font-size:14px; flex-shrink:0; }
.nav__toggle{
  display:none; flex-direction:column; justify-content:center; gap:5px;
  width:36px; height:36px; background:transparent; border:0; padding:0; flex-shrink:0;
}
.nav__toggle span{ width:100%; height:2px; background:var(--ice); border-radius:2px; transition:transform .3s, opacity .3s; }

/* =========================================================
   Hero
   ========================================================= */
.hero{
  position:relative;
  min-height:100svh;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  text-align:center;
  padding:calc(var(--nav-h) + var(--topbar-h, 0px) + 40px) 24px 120px;
  overflow:hidden;
  z-index:1;
  transition:padding-top .35s var(--ease);
}
.hero__glow{
  position:absolute;
  top:-20%; left:50%; transform:translateX(-50%);
  width:1100px; height:900px;
  background:radial-gradient(circle at center, rgba(30,95,168,.35), rgba(30,95,168,0) 65%);
  pointer-events:none;
  z-index:0;
}
.hero__signature{
  position:absolute;
  inset:0;
  width:100%; height:100%;
  z-index:0;
  opacity:.9;
}
.sig__node{ fill:var(--navy-950); stroke:var(--blue-400); stroke-width:3; }
.sig__wire{ fill:none; stroke:var(--blue-600); stroke-width:2.5; stroke-dasharray:6 500; stroke-dashoffset:0; animation:sig-draw 4.5s var(--ease) infinite; opacity:.55; }
.hero__signature .sig__branch:nth-child(2) .sig__wire{ animation-delay:.3s; }
.hero__signature .sig__branch:nth-child(3) .sig__wire{ animation-delay:.6s; }
.sig__trunk{ fill:none; stroke:var(--blue-400); stroke-width:3; opacity:.5; }
.sig__arrow{ fill:none; stroke:var(--blue-400); stroke-width:3; stroke-linecap:round; stroke-linejoin:round; opacity:.5; }
@keyframes sig-draw{
  0%{ stroke-dasharray:6 500; stroke-dashoffset:0; opacity:0; }
  10%{ opacity:.6; }
  70%{ stroke-dasharray:500 6; stroke-dashoffset:0; opacity:.6; }
  100%{ stroke-dasharray:500 6; stroke-dashoffset:-30; opacity:0; }
}
@media (prefers-reduced-motion: reduce){ .sig__wire{ animation:none; stroke-dasharray:none; opacity:.5; } }

.hero__content{ position:relative; z-index:1; max-width:920px; }
.hero__title{
  font-size:clamp(2.4rem, 5.6vw, 4.6rem);
  color:var(--white);
}
.hero__subtitle{
  font-size:clamp(1rem, 1.6vw, 1.2rem);
  max-width:640px;
  margin:0 auto 36px;
}
.hero__actions{ display:flex; gap:16px; justify-content:center; flex-wrap:wrap; }

.hero__scrollcue{
  position:absolute; bottom:36px; left:50%; transform:translateX(-50%);
  display:flex; flex-direction:column; align-items:center; gap:8px;
  z-index:1;
}
.hero__scrollcue span{
  width:1px; height:44px;
  background:linear-gradient(var(--blue-400), transparent);
  animation:cue 2s ease-in-out infinite;
}
.hero__scrollcue p{
  font-family:var(--font-mono); font-size:11px; letter-spacing:.14em; text-transform:uppercase; margin:0; color:var(--gray-500);
}
@keyframes cue{ 0%,100%{ opacity:.2; } 50%{ opacity:1; } }

/* =========================================================
   Benefits strip
   ========================================================= */
.benefits{
  position:relative; z-index:1;
  border-top:1px solid rgba(234,241,250,.08);
  border-bottom:1px solid rgba(234,241,250,.08);
}
.benefits__inner{
  max-width:var(--container); margin:0 auto;
  display:grid; grid-template-columns:repeat(4,1fr);
}
.benefit{
  padding:30px 24px;
  border-right:1px solid rgba(234,241,250,.08);
  display:flex; align-items:baseline; gap:14px;
}
.benefit:last-child{ border-right:0; }
.benefit__mark{ font-family:var(--font-mono); color:var(--blue-400); font-size:13px; }
.benefit p{ margin:0; color:var(--ice); font-weight:500; font-size:15px; }

/* =========================================================
   Problem section
   ========================================================= */
.problem{ position:relative; z-index:1; padding:140px 24px; }
.problem__grid{
  max-width:var(--container); margin:0 auto;
  display:grid; grid-template-columns:1.1fr .9fr; gap:80px; align-items:center;
}
.problem__text h2{ font-size:clamp(1.7rem, 2.6vw, 2.4rem); color:var(--white); max-width:560px; }
.problem__body{ max-width:480px; font-size:1.02rem; }
.problem__visual svg{ width:100%; height:auto; }
.scatter circle{ fill:var(--blue-400); opacity:.7; }
.flowline{ fill:none; stroke:var(--blue-600); stroke-width:1.5; stroke-dasharray:4 6; opacity:.5; }
.hub{ fill:var(--navy-950); stroke:var(--blue-400); stroke-width:2.5; }
.hub--out{ fill:var(--blue-400); stroke:none; }
.outline{ fill:none; stroke:var(--blue-400); stroke-width:2.5; }

/* =========================================================
   Solutions intro
   ========================================================= */
.solutions-intro{
  position:relative; z-index:1;
  max-width:var(--container); margin:0 auto;
  padding:40px 24px 60px;
}
.solutions-intro h2{ font-size:clamp(1.8rem,3vw,2.6rem); color:var(--white); max-width:640px; }

/* =========================================================
   Product sections (sticky, Fold8-style)
   ========================================================= */
.product{
  position:relative; z-index:1;
  height:280vh;
}
.product__sticky{
  position:sticky; top:0;
  height:100vh;
  display:grid;
  grid-template-columns:1fr 1fr;
  align-items:center;
  gap:60px;
  max-width:var(--container);
  margin:0 auto;
  padding:0 28px;
  background:
    radial-gradient(1100px 700px at 15% 30%, var(--accent-dim, transparent) 0%, transparent 60%),
    var(--navy-950);
  overflow:hidden;
}
.product__visual{
  position:absolute;
  inset:0;
  z-index:0;
  pointer-events:none;
}
.product__visual::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(90deg, rgba(3,12,27,.96) 0%, rgba(3,12,27,.84) 39%, rgba(3,12,27,.54) 70%, rgba(3,12,27,.68) 100%),
    linear-gradient(0deg, rgba(3,12,27,.88) 0%, transparent 28%, rgba(3,12,27,.32) 100%);
}
.product__visual img{
  width:100%;
  height:100%;
  object-fit:cover;
  object-position:center;
  opacity:.68;
  transform:scale(1.025);
  transition:transform 1.2s var(--ease), opacity .8s var(--ease);
}
.product__sticky:hover .product__visual img{ transform:scale(1); opacity:.76; }
.product__panel,
.product__features{ position:relative; z-index:1; }
.product__eyebrow{
  font-family:var(--font-mono);
  font-size:12.5px; letter-spacing:.12em; text-transform:uppercase;
  color:var(--accent);
  margin:0 0 18px;
}
.product__name{
  font-size:clamp(2.4rem,4vw,3.4rem);
  color:var(--white);
  margin-bottom:6px;
}
.product__tag{
  font-size:1.15rem; color:var(--ice); font-weight:500; margin-bottom:18px;
}
.product__desc{ max-width:460px; margin-bottom:30px; }

.product__flow{
  margin-top:56px;
  display:flex; flex-wrap:wrap; align-items:center; gap:6px;
  font-family:var(--font-mono); font-size:11.5px; color:var(--gray-500);
}
.product__flow span{
  padding:6px 12px; border:1px solid rgba(234,241,250,.14); border-radius:100px;
  white-space:nowrap;
}
.product__flow i{ width:12px; height:1px; background:rgba(234,241,250,.2); flex-shrink:0; }

.product__features{ position:relative; height:340px; }
.feature{
  position:absolute; inset:0;
  opacity:0; transform:translateY(16px);
  transition:opacity .5s var(--ease), transform .5s var(--ease);
  padding:38px;
  border:1px solid rgba(234,241,250,.1);
  border-radius:20px;
  background:linear-gradient(160deg, rgba(234,241,250,.05), rgba(234,241,250,.015));
}
.feature.is-active{ opacity:1; transform:translateY(0); }
.feature__num{
  font-family:var(--font-mono); color:var(--accent); font-size:13px; display:block; margin-bottom:18px;
}
.feature h4{ color:var(--white); font-size:1.5rem; margin-bottom:12px; }
.feature p{ font-size:1rem; max-width:380px; }

/* =========================================================
   Why choose us
   ========================================================= */
.why{ position:relative; z-index:1; padding:140px 24px; max-width:var(--container); margin:0 auto; }
.why__head h2{ font-size:clamp(1.7rem,2.8vw,2.4rem); color:var(--white); max-width:640px; }
.why__grid{
  margin-top:56px;
  display:grid; grid-template-columns:repeat(5,1fr); gap:1px;
  background:rgba(234,241,250,.08);
  border:1px solid rgba(234,241,250,.08);
  border-radius:20px;
  overflow:hidden;
}
.why__item{
  background:var(--navy-950);
  padding:32px 22px;
  display:flex; flex-direction:column; gap:18px;
}
.why__item svg{
  width:32px; height:32px;
  fill:none; stroke:var(--blue-400); stroke-width:2; stroke-linecap:round; stroke-linejoin:round;
}
.why__item p{ font-size:14.5px; color:var(--ice); margin:0; }

/* =========================================================
   Steps
   ========================================================= */
.steps{ position:relative; z-index:1; padding:60px 24px 140px; max-width:var(--container); margin:0 auto; }
.steps__head h2{ font-size:clamp(1.7rem,2.8vw,2.4rem); color:var(--white); max-width:640px; }
.steps__list{
  margin-top:56px;
  display:grid; grid-template-columns:repeat(4,1fr); gap:28px;
}
.steps__item{
  border-top:2px solid var(--blue-600);
  padding-top:22px;
}
.steps__num{ font-family:var(--font-mono); color:var(--blue-400); font-size:14px; }
.steps__item h4{ color:var(--white); font-size:1.15rem; margin:14px 0 10px; }
.steps__item p{ font-size:14.5px; }

/* =========================================================
   CTA band
   ========================================================= */
.cta-band{
  position:relative; z-index:1;
  margin:0 24px 120px;
  max-width:calc(var(--container) - 48px + 48px);
  padding:90px 40px;
  border-radius:28px;
  background:linear-gradient(135deg, var(--navy-850), var(--navy-800));
  border:1px solid rgba(234,241,250,.08);
  text-align:center;
  overflow:hidden;
}
.cta-band__inner{ max-width:640px; margin:0 auto; position:relative; z-index:1; }
.cta-band h2{ color:var(--white); font-size:clamp(1.7rem,3vw,2.4rem); }
.cta-band__actions{ display:flex; gap:16px; justify-content:center; flex-wrap:wrap; margin-top:26px; }

/* =========================================================
   About
   ========================================================= */
.about{ position:relative; z-index:1; padding:0 24px 140px; max-width:var(--container); margin:0 auto; }
.about__grid{ display:grid; grid-template-columns:1.2fr .8fr; gap:80px; }
.about__text h2{ font-size:clamp(1.7rem,2.8vw,2.4rem); color:var(--white); max-width:520px; }
.about__text p{ max-width:480px; font-size:1.02rem; }
.about__principles ul{ display:flex; flex-direction:column; gap:14px; margin-top:6px; }
.about__principles li{
  font-size:15px; color:var(--ice); padding:14px 0; border-top:1px solid rgba(234,241,250,.08);
}

/* =========================================================
   Contact
   ========================================================= */
.contact{ position:relative; z-index:1; padding:0 24px 160px; max-width:var(--container); margin:0 auto; }
.contact__grid{ display:grid; grid-template-columns:.85fr 1.15fr; gap:80px; }
.contact__intro h2{ font-size:clamp(1.7rem,2.8vw,2.4rem); color:var(--white); max-width:440px; }
.contact__meta{
  margin-top:36px; padding-top:26px; border-top:1px solid rgba(234,241,250,.08);
  display:flex; flex-direction:column; gap:10px;
}
.contact__meta p{ margin:0; font-size:14.5px; }
.contact__meta strong{ color:var(--ice); }

.contact__form{
  display:grid; grid-template-columns:1fr 1fr; gap:18px 16px;
  background:var(--navy-900);
  border:1px solid rgba(234,241,250,.08);
  border-radius:24px;
  padding:40px;
}
.contact__form{ align-self:start; }
.field{ grid-column:1 / -1; display:flex; flex-direction:column; gap:8px; }
.field--half{ grid-column:span 1; }
.field label{ font-size:13px; color:var(--gray-400); font-weight:500; }
.field input, .field select, .field textarea{
  background:var(--navy-850);
  border:1px solid rgba(234,241,250,.14);
  border-radius:10px;
  padding:12px 14px;
  color:var(--ice);
  font-size:14.5px;
  transition:border-color .25s;
  resize:vertical;
}
.field input:focus, .field select:focus, .field textarea:focus{
  outline:none; border-color:var(--blue-400);
}
.field--checkbox{ flex-direction:row; align-items:flex-start; gap:10px; }
.field--checkbox input{ margin-top:3px; accent-color:var(--blue-400); }
.field--checkbox label{ font-size:13px; }
.contact__note{
  grid-column:1/-1; margin:0; font-size:13.5px; min-height:18px;
}
.contact__note.is-success{ color:#3ECF8E; }
.contact__note.is-error{ color:#ff7b8a; }
.contact__website{
  position:absolute !important; left:-10000px !important; width:1px !important;
  height:1px !important; overflow:hidden !important;
}
.contact__form .btn:disabled{ opacity:.65; cursor:wait; transform:none; }

/* =========================================================
   Footer
   ========================================================= */
.footer{
  position:relative; z-index:1;
  border-top:1px solid rgba(234,241,250,.08);
  padding:70px 24px 30px;
}
.footer__top{ max-width:var(--container); margin:0 auto; display:flex; flex-direction:column; align-items:flex-start; gap:14px; margin-bottom:50px; }
.footer__logo{ height:30px; width:auto; flex-shrink:0; }
.footer__top p{ max-width:420px; font-size:14px; }
.footer__grid{
  max-width:var(--container); margin:0 auto;
  display:grid; grid-template-columns:repeat(4,1fr); gap:24px;
  padding-bottom:40px; border-bottom:1px solid rgba(234,241,250,.08);
}
.footer__grid h5{
  font-family:var(--font-mono); font-size:12px; text-transform:uppercase; letter-spacing:.1em;
  color:var(--gray-500); margin:0 0 16px;
}
.footer__grid a{
  display:block; font-size:14.5px; color:var(--gray-400); padding:6px 0; transition:color .2s;
}
.footer__grid a:hover{ color:var(--ice); }
.footer__bottom{
  max-width:var(--container); margin:24px auto 0;
  font-size:13px; color:var(--gray-500);
}

/* =========================================================
   WhatsApp floating button
   ========================================================= */
.whatsapp-btn{
  position:fixed; right:24px; bottom:24px; z-index:70;
  width:58px; height:58px; border-radius:50%;
  background:#25D366;
  display:flex; align-items:center; justify-content:center;
  box-shadow:0 10px 30px rgba(37,211,102,.35);
  animation:wa-pulse 2.6s ease-in-out infinite;
}
.whatsapp-btn svg{ width:28px; height:28px; fill:var(--white); }
@keyframes wa-pulse{
  0%,100%{ box-shadow:0 10px 30px rgba(37,211,102,.35); }
  50%{ box-shadow:0 10px 30px rgba(37,211,102,.6), 0 0 0 8px rgba(37,211,102,.08); }
}

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 1080px){
  .why__grid{ grid-template-columns:repeat(2,1fr); }
  .steps__list{ grid-template-columns:repeat(2,1fr); }
  .contact__grid, .about__grid, .problem__grid{ grid-template-columns:1fr; gap:50px; }
}

@media (max-width: 860px){
  .nav__links, .nav__cta{ display:none; }
  .nav__toggle{ display:flex; }
  .nav.is-open .nav__links{
    display:flex; flex-direction:column; align-items:flex-start; gap:0;
    position:absolute; top:var(--nav-h); left:0; right:0;
    background:var(--navy-900); padding:10px 28px 20px;
    border-bottom:1px solid rgba(234,241,250,.1);
  }
  .nav.is-open .nav__links a{ padding:12px 0; width:100%; border-bottom:1px solid rgba(234,241,250,.06); }
  .nav.is-open .nav__cta{ display:inline-flex; margin:16px 28px 24px; }

  .benefits__inner{ grid-template-columns:repeat(2,1fr); }
  .benefit{ border-bottom:1px solid rgba(234,241,250,.08); }
  .benefit:nth-child(2n){ border-right:0; }

  .product__sticky{ grid-template-columns:1fr; gap:34px; padding:calc(var(--nav-h) + var(--topbar-h, 0px) + 36px) 24px 40px; align-content:start; }
  .product{ height:auto; }
  .product__sticky{ position:relative; height:auto; min-height:100vh; }
  .product__features{ height:auto; position:relative; }
  .product__visual::after{
    background:linear-gradient(180deg, rgba(3,12,27,.78) 0%, rgba(3,12,27,.9) 42%, rgba(3,12,27,.98) 78%);
  }
  .product__visual img{ object-position:68% center; opacity:.5; }
  .feature{ position:relative; opacity:1; transform:none; margin-bottom:16px; padding:26px; }
  .product__flow{ margin-top:32px; }

  .why__grid{ grid-template-columns:1fr; }
  .steps__list{ grid-template-columns:1fr; }

  .contact__form{ grid-template-columns:1fr; padding:28px; }
  .field--half{ grid-column:1/-1; }
}

@media (max-width: 560px){
  .topbar{ padding:10px 40px 10px 12px; font-size:12.5px; }
  .hero{ padding-bottom:90px; }
  .hero__signature{ opacity:.35; }
  .cta-band{ padding:60px 26px; margin:0 16px 90px; }
}