/* =========================================================
   AMS Future Tech — Stylesheet
   Palette: deep navy, white, teal accent
   Type: Poppins (display) + Inter (body)
   ========================================================= */

:root{
  --navy-deep:#071427;
  --navy:#0B2545;
  --navy-2:#10305C;
  --navy-soft:#153A6B;
  --teal:#17C9B8;
  --teal-deep:#0E9E90;
  --teal-glow: rgba(23,201,184,0.35);
  --ink:#0B2545;
  --muted:#5B7089;
  --muted-light:#8FA3B8;
  --bg:#FFFFFF;
  --bg-alt:#F4F8FB;
  --border:#E3EAF1;
  --border-dark: rgba(255,255,255,0.12);
  --radius:14px;
  --radius-sm:8px;
  --shadow: 0 20px 45px -20px rgba(11,37,69,0.25);
  --shadow-sm: 0 10px 25px -12px rgba(11,37,69,0.18);
  --container:1200px;
  --speed:.25s;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family:'Inter', sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{
  font-family:'Poppins', sans-serif;
  color:var(--navy);
  line-height:1.2;
  margin:0 0 .6em;
  font-weight:700;
}
p{ margin:0 0 1em; color:var(--muted); }
a{ color:inherit; text-decoration:none; }
ul{ list-style:none; margin:0; padding:0; }
img{ max-width:100%; display:block; }
button{ font-family:inherit; cursor:pointer; }

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}

.skip-link{
  position:absolute; left:-999px; top:0;
  background:var(--teal); color:var(--navy-deep);
  padding:10px 16px; z-index:2000; font-weight:600; border-radius:0 0 8px 0;
}
.skip-link:focus{ left:0; }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:13px 28px;
  border-radius:100px;
  font-weight:600;
  font-size:0.95rem;
  border:2px solid transparent;
  transition:transform var(--speed) ease, box-shadow var(--speed) ease, background var(--speed) ease, color var(--speed) ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--teal);
  color:var(--navy-deep);
  box-shadow:0 12px 24px -10px var(--teal-glow);
}
.btn-primary:hover{ transform:translateY(-2px); box-shadow:0 16px 30px -10px var(--teal-glow); }
.btn-ghost{
  border-color:rgba(255,255,255,0.35);
  color:#fff;
}
.btn-ghost:hover{ background:rgba(255,255,255,0.1); transform:translateY(-2px); }

.eyebrow{
  text-transform:uppercase;
  letter-spacing:.14em;
  font-size:.78rem;
  font-weight:600;
  color:var(--teal-deep);
  margin-bottom:.9em;
}
.text-teal{ color:var(--teal); }

/* ---------- Header ---------- */
.site-header{
  position:fixed; top:0; left:0; right:0; z-index:1000;
  background:rgba(7,20,39,0.0);
  transition:background var(--speed) ease, box-shadow var(--speed) ease, padding var(--speed) ease;
  padding:18px 0;
}
.site-header.scrolled{
  background:rgba(7,20,39,0.92);
  backdrop-filter:blur(10px);
  box-shadow:0 10px 30px -18px rgba(0,0,0,0.5);
  padding:10px 0;
}
.header-inner{
  display:flex; align-items:center; justify-content:space-between; gap:24px;
}
.brand{ display:flex; align-items:center; gap:10px; }
.brand img{ width:40px; height:40px; border-radius:8px; object-fit:cover; }
.brand-text{ font-family:'Poppins',sans-serif; font-weight:700; color:#fff; font-size:1.05rem; letter-spacing:.01em; }
.brand-text em{ font-style:normal; color:var(--teal); }

.main-nav ul{ display:flex; gap:30px; }
.nav-link{
  color:rgba(255,255,255,0.85);
  font-size:.94rem; font-weight:500;
  position:relative;
  padding:6px 0;
  transition:color var(--speed) ease;
}
.nav-link::after{
  content:''; position:absolute; left:0; bottom:0; width:0; height:2px;
  background:var(--teal); transition:width var(--speed) ease;
}
.nav-link:hover, .nav-link.active{ color:#fff; }
.nav-link:hover::after, .nav-link.active::after{ width:100%; }

.nav-cta{ padding:11px 22px; font-size:.88rem; }

.hamburger{
  display:none; background:none; border:0; width:38px; height:32px;
  flex-direction:column; justify-content:space-between; padding:4px;
}
.hamburger span{ display:block; height:2px; background:#fff; border-radius:2px; transition:transform var(--speed) ease, opacity var(--speed) ease; }
.hamburger.open span:nth-child(1){ transform:translateY(9px) rotate(45deg); }
.hamburger.open span:nth-child(2){ opacity:0; }
.hamburger.open span:nth-child(3){ transform:translateY(-9px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero{
  position:relative;
  min-height:100vh;
  display:flex; align-items:center;
  background:radial-gradient(circle at 15% 20%, var(--navy-2), var(--navy-deep) 60%);
  overflow:hidden;
  padding-top:120px;
  padding-bottom:80px;
}
.hero-canvas{
  position:absolute; inset:0; width:100%; height:100%; opacity:.55;
}
.hero-gradient{
  position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(7,20,39,0) 0%, rgba(7,20,39,0.65) 85%, var(--navy-deep) 100%);
  pointer-events:none;
}
.hero-inner{ position:relative; z-index:2; max-width:820px; }
.hero h1{
  color:#fff; font-size:clamp(2.2rem, 4.6vw, 3.6rem); font-weight:800; letter-spacing:-0.01em;
}
.hero-sub{ color:rgba(255,255,255,0.78); font-size:1.12rem; max-width:640px; }
.hero-actions{ display:flex; gap:16px; margin:32px 0 48px; flex-wrap:wrap; }

.hero-stats{ display:flex; gap:48px; flex-wrap:wrap; padding-top:28px; border-top:1px solid rgba(255,255,255,0.14); }
.stat{ display:flex; flex-direction:column; }
.stat-num{ font-family:'Poppins',sans-serif; font-size:1.8rem; font-weight:700; color:var(--teal); }
.stat-label{ color:rgba(255,255,255,0.65); font-size:.85rem; }

.scroll-cue{
  position:absolute; bottom:28px; left:50%; transform:translateX(-50%);
  width:26px; height:42px; border:2px solid rgba(255,255,255,0.4); border-radius:20px;
  z-index:2;
}
.scroll-cue span{
  position:absolute; top:6px; left:50%; transform:translateX(-50%);
  width:4px; height:8px; background:var(--teal); border-radius:2px;
  animation:scrollcue 1.8s ease infinite;
}
@keyframes scrollcue{
  0%{ opacity:1; top:6px; }
  70%{ opacity:0; top:22px; }
  100%{ opacity:0; top:22px; }
}

/* reveal-on-load */
.reveal{ opacity:0; transform:translateY(16px); animation:reveal .7s ease forwards; }
.hero-inner .eyebrow.reveal{ animation-delay:.05s; }
.hero-inner h1.reveal{ animation-delay:.15s; }
.hero-inner .hero-sub.reveal{ animation-delay:.28s; }
.hero-inner .hero-actions.reveal{ animation-delay:.4s; }
.hero-inner .hero-stats.reveal{ animation-delay:.52s; }
@keyframes reveal{ to{ opacity:1; transform:translateY(0); } }

/* ---------- Sections (generic) ---------- */
.section{ padding:100px 0; }
.section-alt{ background:var(--bg-alt); }
.section-dark{ background:var(--navy-deep); }
.section-dark .eyebrow{ color:var(--teal); }
.section-head{ max-width:680px; margin:0 auto 56px; text-align:center; }
.section-head h2{ font-size:clamp(1.7rem, 3vw, 2.4rem); }
.section-head.light h2{ color:#fff; }
.section-sub{ font-size:1.02rem; }

/* scroll-reveal utility (JS toggles .in-view) */
.will-reveal{ opacity:0; transform:translateY(24px); transition:opacity .7s ease, transform .7s ease; }
.will-reveal.in-view{ opacity:1; transform:translateY(0); }

/* ---------- About ---------- */
.about-grid{
  display:grid; grid-template-columns:1.1fr .9fr; gap:64px; align-items:center;
}
.about-copy h2{ font-size:clamp(1.7rem, 3vw, 2.3rem); }
.node-diagram{
  position:relative; width:100%; max-width:400px; aspect-ratio:1/1; margin:0 auto;
}
.node-core, .node{
  position:absolute; display:flex; align-items:center; justify-content:center;
  border-radius:50%; color:#fff; font-size:1.3rem;
  box-shadow:var(--shadow-sm);
}
.node-core{
  width:96px; height:96px; left:50%; top:50%; transform:translate(-50%,-50%);
  background:linear-gradient(135deg, var(--teal), var(--teal-deep));
  font-size:1.9rem; z-index:2;
}
.node{ width:64px; height:64px; background:var(--navy); z-index:2; }
.n1{ left:50%; top:8%; transform:translateX(-50%); }
.n2{ right:6%; top:30%; }
.n3{ right:10%; bottom:12%; }
.n4{ left:8%; bottom:18%; }
.node-lines{ position:absolute; inset:0; width:100%; height:100%; z-index:1; }
.node-lines line{ stroke:var(--border); stroke-width:2; }

/* ---------- Card grid / services ---------- */
.card-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:28px; }
.card{
  background:#fff; border:1px solid var(--border); border-radius:var(--radius);
  padding:32px 26px; box-shadow:var(--shadow-sm);
  transition:transform var(--speed) ease, box-shadow var(--speed) ease, border-color var(--speed) ease;
}
.card:hover{ transform:translateY(-6px); box-shadow:var(--shadow); border-color:var(--teal); }
.card-icon{
  width:56px; height:56px; border-radius:14px;
  background:linear-gradient(135deg, var(--navy), var(--navy-2));
  color:var(--teal); display:flex; align-items:center; justify-content:center;
  font-size:1.4rem; margin-bottom:20px;
}
.service-card h3{ font-size:1.15rem; }
.chip-list{ margin-top:16px; display:flex; flex-wrap:wrap; gap:8px; }
.chip-list li{
  font-size:.78rem; font-weight:500; color:var(--navy);
  background:var(--bg-alt); border:1px solid var(--border);
  padding:6px 12px; border-radius:100px;
}

/* ---------- Solutions ---------- */
.solutions-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:24px; }
.solution-card{
  padding:28px 22px; border-radius:var(--radius);
  background:#fff; border:1px solid var(--border);
  transition:transform var(--speed) ease, box-shadow var(--speed) ease;
  position:relative; overflow:hidden;
}
.solution-card::before{
  content:''; position:absolute; top:0; left:0; width:4px; height:100%;
  background:linear-gradient(180deg, var(--teal), var(--navy));
  transform:scaleY(0); transform-origin:top; transition:transform var(--speed) ease;
}
.solution-card:hover{ transform:translateY(-6px); box-shadow:var(--shadow); }
.solution-card:hover::before{ transform:scaleY(1); }
.solution-card i{ font-size:1.6rem; color:var(--teal-deep); margin-bottom:14px; }
.solution-card h3{ font-size:1.05rem; margin-bottom:.4em; }
.solution-card p{ font-size:.92rem; margin:0; }

/* ---------- Why choose us ---------- */
.why-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:20px; }
.why-card{
  background:rgba(255,255,255,0.04);
  border:1px solid var(--border-dark);
  border-radius:var(--radius);
  padding:26px 20px;
  text-align:center;
  transition:transform var(--speed) ease, background var(--speed) ease, border-color var(--speed) ease;
}
.why-card:hover{ transform:translateY(-4px); background:rgba(23,201,184,0.08); border-color:var(--teal); }
.why-card i{ font-size:1.5rem; color:var(--teal); margin-bottom:12px; display:block; }
.why-card h4{ color:#fff; font-size:.92rem; font-weight:600; margin:0; }

/* ---------- Technologies ---------- */
.tech-categories{ display:grid; grid-template-columns:repeat(3,1fr); gap:32px; }
.tech-cat h4{ font-size:.95rem; color:var(--navy); margin-bottom:14px; text-transform:uppercase; letter-spacing:.06em; }
.tech-badges{ display:flex; flex-wrap:wrap; gap:10px; }
.tech-badges span{
  font-size:.84rem; font-weight:500; padding:9px 16px; border-radius:100px;
  background:var(--bg-alt); border:1px solid var(--border); color:var(--navy);
  transition:background var(--speed) ease, color var(--speed) ease, border-color var(--speed) ease;
}
.tech-badges span:hover{ background:var(--navy); color:#fff; border-color:var(--navy); }

/* ---------- Contact ---------- */
.contact-grid{ display:grid; grid-template-columns:.85fr 1.15fr; gap:48px; align-items:start; }
.contact-info h3{ font-size:1.3rem; }
.contact-list li{ display:flex; align-items:flex-start; gap:12px; margin-bottom:16px; color:var(--muted); font-size:.95rem; }
.contact-list li i{ color:var(--teal-deep); margin-top:3px; }
.contact-list a:hover{ color:var(--teal-deep); }
.map-embed{ border-radius:var(--radius); overflow:hidden; border:1px solid var(--border); margin-top:8px; }

.contact-form{
  background:#fff; border:1px solid var(--border); border-radius:var(--radius);
  padding:32px; box-shadow:var(--shadow-sm);
}
.form-row{ display:grid; grid-template-columns:1fr 1fr; gap:18px; }
.form-field{ margin-bottom:18px; }
.form-field label{ display:block; font-size:.85rem; font-weight:600; margin-bottom:6px; color:var(--navy); }
.form-field input, .form-field textarea{
  width:100%; padding:12px 14px; border-radius:var(--radius-sm);
  border:1px solid var(--border); font-family:inherit; font-size:.95rem;
  background:var(--bg-alt); color:var(--ink);
  transition:border-color var(--speed) ease, box-shadow var(--speed) ease;
}
.form-field input:focus, .form-field textarea:focus{
  outline:none; border-color:var(--teal); box-shadow:0 0 0 4px var(--teal-glow); background:#fff;
}
.form-submit{ width:100%; margin-top:6px; }
.form-note{ font-size:.85rem; margin:12px 0 0; color:var(--teal-deep); font-weight:600; min-height:1.2em; }

/* ---------- Footer ---------- */
.site-footer{ background:var(--navy-deep); color:rgba(255,255,255,0.7); padding-top:70px; }
.footer-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:40px; padding-bottom:50px; }
.footer-brand p{ color:rgba(255,255,255,0.55); font-size:.92rem; margin-top:14px; }
.footer-col h4{ color:#fff; font-size:.95rem; margin-bottom:16px; }
.footer-col ul li{ margin-bottom:10px; }
.footer-col a{ color:rgba(255,255,255,0.62); font-size:.92rem; transition:color var(--speed) ease; }
.footer-col a:hover{ color:var(--teal); }
.social-icons{ display:flex; gap:12px; margin-top:20px; }
.social-icons a{
  width:38px; height:38px; border-radius:50%; border:1px solid rgba(255,255,255,0.2);
  display:flex; align-items:center; justify-content:center; transition:background var(--speed) ease, border-color var(--speed) ease;
}
.social-icons a:hover{ background:var(--teal); border-color:var(--teal); color:var(--navy-deep); }
.footer-bottom{
  border-top:1px solid rgba(255,255,255,0.1); padding:22px 0; text-align:center; font-size:.85rem;
}

/* ---------- Back to top ---------- */
#back-to-top{
  position:fixed; right:24px; bottom:24px; z-index:900;
  width:48px; height:48px; border-radius:50%; border:none;
  background:var(--teal); color:var(--navy-deep); font-size:1rem;
  box-shadow:var(--shadow-sm);
  opacity:0; visibility:hidden; transform:translateY(10px);
  transition:opacity var(--speed) ease, transform var(--speed) ease, visibility var(--speed) ease;
}
#back-to-top.show{ opacity:1; visibility:visible; transform:translateY(0); }

/* ---------- Accessibility: reduced motion ---------- */
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  .reveal, .will-reveal{ animation:none !important; transition:none !important; opacity:1 !important; transform:none !important; }
  .scroll-cue span{ animation:none; }
}

/* ---------- Focus visibility ---------- */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible{
  outline:3px solid var(--teal); outline-offset:2px;
}

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 1080px){
  .card-grid, .solutions-grid{ grid-template-columns:repeat(2,1fr); }
  .why-grid{ grid-template-columns:repeat(2,1fr); }
  .tech-categories{ grid-template-columns:repeat(2,1fr); }
  .footer-grid{ grid-template-columns:1fr 1fr; }
}

@media (max-width: 900px){
  .about-grid{ grid-template-columns:1fr; }
  .about-visual{ order:-1; max-width:340px; margin:0 auto 20px; }
  .contact-grid{ grid-template-columns:1fr; }
}

@media (max-width: 840px){
  .main-nav{
    position:fixed; top:0; right:0; height:100vh; width:min(320px, 80vw);
    background:var(--navy-deep); padding:100px 32px 32px;
    transform:translateX(100%); transition:transform var(--speed) ease;
    z-index:999;
  }
  .main-nav.open{ transform:translateX(0); }
  .main-nav ul{ flex-direction:column; gap:22px; }
  .nav-cta{ display:none; }
  .hamburger{ display:flex; }
}

@media (max-width: 620px){
  .section{ padding:70px 0; }
  .hero{ padding-top:110px; }
  .hero-actions{ margin:26px 0 36px; }
  .hero-stats{ gap:28px; }
  .card-grid, .solutions-grid, .why-grid, .tech-categories{ grid-template-columns:1fr; }
  .form-row{ grid-template-columns:1fr; }
  .footer-grid{ grid-template-columns:1fr; text-align:left; }
}