/* ==========================================================================
   stackwavee — design tokens
   ========================================================================== */

:root{
  --primary:   #2513EB;
  --primary-dim: #1c0fc2;
  --secondary: #0F122A;
  --accent:    #14B9A7;
  --bg:        #F9FAFC;
  --text:      #334433;
  --panel:     #FFFFFF;
  --hairline:  rgba(15,18,42,0.10);

  --font-display: 'Space Grotesk', 'Segoe UI', sans-serif;
  --font-body: 'IBM Plex Sans', 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', 'Courier New', monospace;

  --maxw: 1180px;
  --radius: 14px;
  --ease: cubic-bezier(.22,.68,.36,1);
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{ animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important; }
}

body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}

img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{ font-family:var(--font-display); color:var(--secondary); margin:0; line-height:1.12; letter-spacing:-0.01em; }
p{ margin:0; }

.wrap{ max-width:var(--maxw); margin:0 auto; padding:0 28px; }

:focus-visible{
  outline: 2.5px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- eyebrow / layer-mark ---------- */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--primary);
  margin-bottom:16px;
}
.eyebrow .layers{ display:inline-flex; flex-direction:column; gap:2px; }
.eyebrow .layers span{ width:16px; height:3px; border-radius:2px; background:var(--accent); }
.eyebrow .layers span:nth-child(2){ background:var(--primary); width:11px; }
.eyebrow .layers span:nth-child(3){ background:var(--secondary); width:16px; }

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:14px 26px;
  border-radius:10px;
  font-family:var(--font-display);
  font-weight:600;
  font-size:15px;
  cursor:pointer;
  border:1.5px solid transparent;
  transition:transform .25s var(--ease), background .25s, color .25s, border-color .25s;
}
.btn:hover{ transform:translateY(-2px); }
.btn-primary{ background:var(--primary); color:#fff; }
.btn-primary:hover{ background:var(--primary-dim); }
.btn-ghost{ background:transparent; color:var(--secondary); border-color:var(--hairline); }
.btn-ghost:hover{ border-color:var(--primary); color:var(--primary); }
.btn-accent{ background:var(--accent); color:#06231F; }
.btn-accent:hover{ background:#119d8d; }

/* ---------- header ---------- */
.site-header{
  position:sticky; top:0; z-index:50;
  background:rgba(249,250,252,0.86);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--hairline);
}
.site-header .wrap{
  display:flex; align-items:center; justify-content:space-between;
  height:78px;
}
.logo{ display:flex; align-items:center; gap:11px; font-family:var(--font-display); font-weight:700; font-size:20px; color:var(--secondary); }
.logo-mark{ width:30px; height:26px; position:relative; }
.logo-mark span{ position:absolute; left:0; right:0; height:6px; border-radius:3px; }
.logo-mark span:nth-child(1){ top:0; background:var(--secondary); width:100%; }
.logo-mark span:nth-child(2){ top:10px; background:var(--primary); width:100%; }
.logo-mark span:nth-child(3){ top:20px; background:var(--accent); width:70%; transition:width .3s var(--ease); }
.logo:hover .logo-mark span:nth-child(3){ width:100%; }
.logo b{ color:var(--primary); }

.main-nav{ display:flex; align-items:center; gap:38px; }
.main-nav ul{ display:flex; gap:34px; }
.main-nav a{
  font-family:var(--font-mono); font-size:13.5px; letter-spacing:.05em; text-transform:uppercase;
  color:var(--secondary); position:relative; padding:6px 0;
}
.main-nav a::after{
  content:''; position:absolute; left:0; bottom:0; width:0; height:2px; background:var(--accent);
  transition:width .25s var(--ease);
}
.main-nav a:hover::after, .main-nav a.active::after{ width:100%; }
.main-nav a.active{ color:var(--primary); }

.nav-toggle{ display:none; background:none; border:none; cursor:pointer; padding:6px; }
.nav-toggle span{ display:block; width:24px; height:2px; background:var(--secondary); margin:5px 0; transition:.25s; }

@media (max-width:860px){
  .nav-toggle{ display:block; }
  .main-nav{
    position:fixed; inset:78px 0 0 0; background:var(--bg);
    flex-direction:column; align-items:flex-start; padding:34px 28px;
    transform:translateX(100%); transition:transform .35s var(--ease);
  }
  .main-nav.open{ transform:translateX(0); }
  .main-nav ul{ flex-direction:column; gap:22px; width:100%; }
  .main-nav a{ font-size:16px; }
  .header-cta{ margin-top:28px; }
}

/* ---------- hero: stacked layers + wave ---------- */
.hero{
  position:relative; overflow:hidden;
  padding:96px 0 64px;
  background:var(--secondary);
  color:#fff;
}
.hero .wrap{ position:relative; z-index:2; }
.hero-grid{ display:grid; grid-template-columns:1.1fr .9fr; gap:60px; align-items:center; }
@media (max-width:940px){ .hero-grid{ grid-template-columns:1fr; } }

.hero .eyebrow{ color:var(--accent); }
.hero .eyebrow .layers span{ background:#fff; opacity:.85; }
.hero h1{
  color:#fff; font-size:clamp(34px,4.6vw,58px); font-weight:600; margin-bottom:22px;
}
.hero h1 em{ font-style:normal; color:var(--accent); }
.hero p.lead{ font-size:17.5px; color:rgba(255,255,255,.72); max-width:46ch; margin-bottom:34px; }
.hero-actions{ display:flex; gap:16px; flex-wrap:wrap; }

.stack-art{ position:relative; height:340px; }
.stack-bar{
  position:absolute; left:0; right:0; height:52px; border-radius:12px;
  display:flex; align-items:center; padding:0 22px; gap:14px;
  font-family:var(--font-mono); font-size:12.5px; letter-spacing:.06em; color:#fff;
  box-shadow:0 18px 40px -18px rgba(0,0,0,.6);
  animation:float-bar 7s var(--ease) infinite;
}
.stack-bar .dot{ width:8px; height:8px; border-radius:50%; }
.stack-bar:nth-child(1){ top:0; background:linear-gradient(90deg,var(--primary),#4130ff); width:100%; animation-delay:0s; }
.stack-bar:nth-child(2){ top:76px; background:rgba(255,255,255,.08); border:1px solid rgba(255,255,255,.14); width:92%; animation-delay:.4s; }
.stack-bar:nth-child(3){ top:152px; background:linear-gradient(90deg,var(--accent),#0d8f82); width:80%; color:#06231F; animation-delay:.8s; }
.stack-bar:nth-child(4){ top:228px; background:rgba(255,255,255,.08); border:1px solid rgba(255,255,255,.14); width:68%; animation-delay:1.2s; }
.stack-bar .dot{ background:currentColor; opacity:.7; }
@keyframes float-bar{
  0%,100%{ transform:translateY(0); }
  50%{ transform:translateY(-7px); }
}

.hero-wave{
  position:absolute; left:0; right:0; bottom:-2px; z-index:1; line-height:0;
}
.hero-wave svg{ width:100%; height:auto; display:block; }

/* ---------- section base ---------- */
section{ padding:96px 0; }
.section-head{ max-width:640px; margin-bottom:56px; }
.section-head h2{ font-size:clamp(26px,3.2vw,38px); font-weight:600; }
.section-head p{ margin-top:14px; color:var(--text); opacity:.85; font-size:16px; }
.section-head.center{ margin-left:auto; margin-right:auto; text-align:center; }

/* ---------- why choose us ---------- */
.why{ background:var(--panel); border-top:1px solid var(--hairline); border-bottom:1px solid var(--hairline); }
.why-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:2px; background:var(--hairline); border-radius:var(--radius); overflow:hidden; }
@media (max-width:900px){ .why-grid{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:520px){ .why-grid{ grid-template-columns:1fr; } }
.why-card{
  background:var(--panel); padding:34px 26px; transition:background .25s;
}
.why-card:hover{ background:#F3F5FF; }
.why-num{ font-family:var(--font-mono); font-size:12.5px; color:var(--accent); letter-spacing:.08em; }
.why-card h3{ font-size:19px; margin:14px 0 10px; }
.why-card p{ font-size:14.5px; opacity:.8; }

/* ---------- services (stacked layer cards) ---------- */
.services-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
@media (max-width:940px){ .services-grid{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:620px){ .services-grid{ grid-template-columns:1fr; } }
.service-card{
  position:relative; background:var(--panel); border:1px solid var(--hairline);
  border-radius:var(--radius); padding:30px 26px 28px; overflow:hidden;
  transition:transform .3s var(--ease), box-shadow .3s var(--ease);
}
.service-card::before{
  content:''; position:absolute; left:0; top:0; bottom:0; width:4px; background:var(--accent);
  transition:width .25s var(--ease);
}
.service-card:hover{ transform:translateY(-6px); box-shadow:0 26px 50px -30px rgba(15,18,42,.35); }
.service-card:hover::before{ width:7px; }
.service-icon{ width:44px; height:44px; border-radius:10px; background:#EEF0FF; color:var(--primary); display:flex; align-items:center; justify-content:center; margin-bottom:20px; }
.service-card h3{ font-size:19px; margin-bottom:10px; }
.service-card p{ font-size:14.5px; opacity:.8; }

/* ---------- process ---------- */
.process{ background:var(--secondary); color:#fff; }
.process .section-head h2{ color:#fff; }
.process .section-head p{ color:rgba(255,255,255,.65); }
.process-row{ display:grid; grid-template-columns:repeat(4,1fr); gap:0; position:relative; }
@media (max-width:900px){ .process-row{ grid-template-columns:repeat(2,1fr); gap:34px; } }
@media (max-width:560px){ .process-row{ grid-template-columns:1fr; } }
.process-step{ padding:0 22px 0 0; border-left:1px solid rgba(255,255,255,.12); padding-left:22px; }
.process-row .process-step:first-child{ border-left:none; padding-left:0; }
@media (max-width:900px){ .process-step{ border-left:none !important; padding-left:0 !important; } }
.process-num{ font-family:var(--font-mono); font-size:32px; color:var(--accent); font-weight:600; }
.process-step h3{ color:#fff; font-size:19px; margin:14px 0 10px; }
.process-step p{ color:rgba(255,255,255,.62); font-size:14.5px; }

/* ---------- technologies ---------- */
.tech-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:24px; }
@media (max-width:860px){ .tech-grid{ grid-template-columns:repeat(2,1fr); } }
.tech-col h3{
  font-family:var(--font-mono); font-size:12.5px; letter-spacing:.1em; text-transform:uppercase;
  color:var(--primary); margin-bottom:18px; padding-bottom:12px; border-bottom:2px solid var(--accent);
}
.tech-col ul li{ padding:8px 0; font-size:15px; border-bottom:1px dashed var(--hairline); }
.tech-col ul li:last-child{ border-bottom:none; }

/* ---------- stats (skyline bar) ---------- */
.stats{ background:var(--panel); border-top:1px solid var(--hairline); border-bottom:1px solid var(--hairline); }
.stats-grid{ display:grid; grid-template-columns:repeat(4,1fr); }
@media (max-width:700px){ .stats-grid{ grid-template-columns:repeat(2,1fr); } }
.stat{ text-align:center; padding:14px; border-left:1px solid var(--hairline); }
.stats-grid .stat:first-child{ border-left:none; }
@media (max-width:700px){ .stat:nth-child(odd){ border-left:none; } }
.stat .num{ font-family:var(--font-display); font-size:clamp(30px,4vw,44px); font-weight:700; color:var(--primary); }
.stat .num .accent{ color:var(--accent); }
.stat .label{ font-family:var(--font-mono); font-size:12px; letter-spacing:.08em; text-transform:uppercase; opacity:.65; margin-top:6px; }

/* ---------- contact CTA ---------- */
.cta{
  position:relative; overflow:hidden;
  background:linear-gradient(120deg,var(--primary) 0%, #1a0fc9 55%, var(--secondary) 100%);
  color:#fff; text-align:center; padding:100px 0;
}
.cta h2{ color:#fff; font-size:clamp(28px,4vw,42px); margin-bottom:16px; }
.cta p{ color:rgba(255,255,255,.75); margin-bottom:36px; font-size:16.5px; }
.cta .btn-accent{ font-size:16px; padding:16px 34px; }
.cta-links{ margin-top:22px; display:flex; gap:26px; justify-content:center; flex-wrap:wrap; font-family:var(--font-mono); font-size:14px; color:rgba(255,255,255,.85); }

/* ---------- footer ---------- */
footer{ background:var(--secondary); color:rgba(255,255,255,.62); padding:70px 0 30px; }
.footer-grid{ display:grid; grid-template-columns:1.4fr 1fr 1.2fr; gap:48px; margin-bottom:54px; }
@media (max-width:800px){ .footer-grid{ grid-template-columns:1fr; gap:36px; } }
.footer-grid .logo{ color:#fff; margin-bottom:16px; }
.footer-grid p{ font-size:14.5px; line-height:1.7; max-width:38ch; }
footer h4{ color:#fff; font-family:var(--font-mono); font-size:12.5px; letter-spacing:.1em; text-transform:uppercase; margin-bottom:18px; }
footer ul li{ margin-bottom:11px; }
footer ul li a{ font-size:14.5px; transition:color .2s; }
footer ul li a:hover{ color:var(--accent); }
.footer-contact li{ font-size:14.5px; }
.footer-contact .k{ font-family:var(--font-mono); font-size:11.5px; text-transform:uppercase; color:var(--accent); letter-spacing:.08em; display:block; margin-bottom:3px; }
.social-row{ display:flex; gap:12px; margin-top:20px; }
.social-row a{
  width:36px; height:36px; border-radius:9px; border:1px solid rgba(255,255,255,.16);
  display:flex; align-items:center; justify-content:center; transition:.25s;
}
.social-row a:hover{ background:var(--accent); border-color:var(--accent); color:var(--secondary); }
.footer-bottom{ border-top:1px solid rgba(255,255,255,.1); padding-top:26px; display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px; font-size:13px; }

/* ---------- inner pages (about / contact / legal) ---------- */
.page-hero{ background:var(--secondary); color:#fff; padding:72px 0 60px; }
.page-hero h1{ color:#fff; font-size:clamp(30px,4.4vw,46px); }
.page-hero p{ color:rgba(255,255,255,.68); margin-top:14px; max-width:56ch; font-size:16px; }
.crumb{ font-family:var(--font-mono); font-size:12.5px; letter-spacing:.08em; text-transform:uppercase; color:var(--accent); margin-bottom:16px; display:block; }

.split{ display:grid; grid-template-columns:1fr 1fr; gap:56px; align-items:start; }
@media (max-width:880px){ .split{ grid-template-columns:1fr; } }

.value-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:20px; margin-top:10px; }
@media (max-width:560px){ .value-grid{ grid-template-columns:1fr; } }
.value-card{ background:var(--panel); border:1px solid var(--hairline); border-radius:12px; padding:22px 22px; }
.value-card h4{ font-size:16px; margin-bottom:8px; }
.value-card p{ font-size:14px; opacity:.78; }

.timeline-mini{ display:flex; flex-direction:column; gap:22px; margin-top:26px; }
.timeline-mini li{ display:flex; gap:16px; }
.timeline-mini .yr{ font-family:var(--font-mono); color:var(--primary); font-weight:600; width:52px; flex-shrink:0; }

/* ---------- contact page ---------- */
.contact-grid{ display:grid; grid-template-columns:.95fr 1.05fr; gap:48px; }
@media (max-width:900px){ .contact-grid{ grid-template-columns:1fr; } }
.contact-card{ background:var(--panel); border:1px solid var(--hairline); border-radius:var(--radius); padding:26px; margin-bottom:16px; display:flex; gap:16px; align-items:flex-start; }
.contact-card .ic{ width:42px; height:42px; border-radius:10px; background:#EEF0FF; color:var(--primary); display:flex; align-items:center; justify-content:center; flex-shrink:0; }
.contact-card h4{ font-size:14px; font-family:var(--font-mono); text-transform:uppercase; letter-spacing:.06em; color:var(--secondary); margin-bottom:6px; }
.contact-card p, .contact-card a{ font-size:15px; }
.contact-card a:hover{ color:var(--primary); }

.form-panel{ background:var(--panel); border:1px solid var(--hairline); border-radius:var(--radius); padding:34px; }
.form-row{ display:grid; grid-template-columns:1fr 1fr; gap:16px; }
@media (max-width:520px){ .form-row{ grid-template-columns:1fr; } }
.field{ margin-bottom:18px; }
.field label{ display:block; font-family:var(--font-mono); font-size:12px; text-transform:uppercase; letter-spacing:.06em; color:var(--secondary); margin-bottom:8px; }
.field input, .field textarea{
  width:100%; padding:13px 14px; border-radius:9px; border:1.5px solid var(--hairline);
  font-family:var(--font-body); font-size:14.5px; background:var(--bg); color:var(--text); resize:vertical;
  transition:border-color .2s;
}
.field input:focus, .field textarea:focus{ border-color:var(--primary); outline:none; }
.map-note{ margin-top:18px; padding:16px 18px; border:1px dashed var(--hairline); border-radius:10px; font-size:13.5px; opacity:.75; }

/* ---------- legal pages (terms / privacy) ---------- */
.legal{ max-width:820px; margin:0 auto; }
.legal-toc{ background:var(--panel); border:1px solid var(--hairline); border-radius:var(--radius); padding:26px 28px; margin-bottom:46px; }
.legal-toc h4{ font-family:var(--font-mono); font-size:12.5px; text-transform:uppercase; letter-spacing:.08em; color:var(--primary); margin-bottom:14px; }
.legal-toc ol{ list-style:decimal; padding-left:20px; display:grid; grid-template-columns:1fr 1fr; gap:8px 20px; }
@media (max-width:560px){ .legal-toc ol{ grid-template-columns:1fr; } }
.legal-toc a{ font-size:14.5px; }
.legal-toc a:hover{ color:var(--primary); }
.legal-block{ padding:34px 0; border-top:1px solid var(--hairline); scroll-margin-top:100px; }
.legal-block:first-of-type{ border-top:none; padding-top:0; }
.legal-block .lnum{ font-family:var(--font-mono); color:var(--accent); font-size:13px; letter-spacing:.06em; }
.legal-block h2{ font-size:22px; margin-top:8px; margin-bottom:14px; }
.legal-block p{ font-size:15px; opacity:.88; margin-bottom:12px; }
.legal-block ul{ list-style:disc; padding-left:22px; margin-bottom:12px; }
.legal-block ul li{ font-size:15px; opacity:.88; margin-bottom:8px; }
.legal-updated{ font-family:var(--font-mono); font-size:13px; color:var(--accent); }