/* ==========================================================================
   EPICON — design system
   Tokens, layout and components for the marketing site (index.html, bg/index.html)
   and content pages (service pages, privacy pages, 404).
   ========================================================================== */

:root{
  --header-height:64px;

  --paper:#eef1f8;
  --paper-raised:#ffffff;
  --paper-sunken:#e3e7f2;
  --text:#0f1524;
  --muted:#5a6278;
  --line:rgba(20,28,54,.12);
  --brand-ink:#080d1c;
  --brand-ink-2:#101a30;
  --line-on-ink:rgba(168,182,222,.18);
  --text-on-ink:#eef1fb;
  --muted-on-ink:#8e98b8;
  --accent:#3654ff;
  --accent-ink:#0f1e6b;
  --ok:#22c07f;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --paper:#0a0e1a;
    --paper-raised:#111726;
    --paper-sunken:#0d1220;
    --text:#eaedf7;
    --muted:#9aa3c0;
    --line:rgba(168,182,222,.14);
    --brand-ink:#05070f;
    --brand-ink-2:#0b0f1c;
    --accent:#5d78ff;
  }
}
:root[data-theme="dark"]{
  --paper:#0a0e1a;
  --paper-raised:#111726;
  --paper-sunken:#0d1220;
  --text:#eaedf7;
  --muted:#9aa3c0;
  --line:rgba(168,182,222,.14);
  --brand-ink:#05070f;
  --brand-ink-2:#0b0f1c;
  --accent:#5d78ff;
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--header-height) + 12px);}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
.mono{
  font-family:ui-monospace,"Cascadia Code","SF Mono",Consolas,"Roboto Mono",monospace;
  font-variant-numeric:tabular-nums;
}
h1,h2,h3{font-weight:800;letter-spacing:-.02em;text-wrap:balance;margin:0;}
p{margin:0;}
a{color:inherit;}
img{max-width:100%;display:block;}
ul{margin:0;padding:0;}
.wrap{max-width:1180px;margin:0 auto;padding-inline:28px;}
@media (max-width:640px){ .wrap{padding-inline:20px;} }

::selection{background:var(--accent);color:#fff;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
.visually-hidden{position:absolute!important;height:1px;width:1px;overflow:hidden;clip:rect(1px,1px,1px,1px);white-space:nowrap;}
.skip-link{
  position:absolute;left:12px;top:-48px;z-index:1000;background:var(--accent);color:#fff;
  padding:10px 16px;border-radius:3px;text-decoration:none;font-size:.9rem;transition:top .15s ease;
}
.skip-link:focus{top:12px;}

.eyebrow{
  display:inline-flex;align-items:center;gap:.55em;
  font-family:ui-monospace,"Cascadia Code","SF Mono",Consolas,monospace;
  font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--accent);font-weight:600;
}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent);flex:none;}
.eyebrow.on-ink{color:#a9b8ff;}
.eyebrow.on-ink::before{background:#a9b8ff;}

/* ---------- panel / blueprint card ---------- */
.panel{position:relative;border:1px solid var(--line);background:var(--paper-raised);border-radius:3px;}
.panel::before,.panel::after{content:"";position:absolute;width:9px;height:9px;border:1px solid var(--accent);opacity:.55;}
.panel::before{top:-1px;left:-1px;border-right:none;border-bottom:none;}
.panel::after{bottom:-1px;right:-1px;border-left:none;border-top:none;}
.panel-tag{position:absolute;top:-11px;left:16px;background:var(--paper);padding:0 8px;font-size:.68rem;color:var(--muted);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.5em;padding:.85em 1.5em;border-radius:2px;
  font-weight:600;font-size:.92rem;text-decoration:none;border:1px solid transparent;cursor:pointer;
  transition:transform .15s ease,box-shadow .15s ease,background-color .15s ease,border-color .15s ease;
}
.btn:hover{transform:translateY(-2px);}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 14px 30px -12px rgba(54,84,255,.55);}
.btn-primary:hover{box-shadow:0 18px 36px -12px rgba(54,84,255,.65);}
.btn-ghost-ink{background:transparent;color:var(--text-on-ink);border-color:var(--line-on-ink);}
.btn-ghost-ink:hover{border-color:#a9b8ff;background:rgba(169,184,255,.06);}
.btn-on-accent{background:#fff;color:var(--accent-ink);}

/* ---------- header ---------- */
header{position:sticky;top:0;z-index:50;background:rgba(8,13,28,.86);backdrop-filter:blur(14px);border-bottom:1px solid var(--line-on-ink);}
.nav{display:flex;align-items:center;gap:20px;padding:14px 0;min-height:var(--header-height);}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:none;}
.brand img{height:26px;width:auto;}
.navlinks{display:flex;gap:26px;margin-inline:auto;}
.navlinks a{color:var(--muted-on-ink);text-decoration:none;font-size:.9rem;font-weight:500;padding:6px 2px;border-bottom:1px solid transparent;transition:color .15s,border-color .15s;}
.navlinks a:hover{color:var(--text-on-ink);border-color:#a9b8ff;}
.nav-cta{flex:none;}
.status-pill{display:flex;align-items:center;gap:.55em;font-size:.72rem;color:var(--muted-on-ink);padding:6px 10px;border:1px solid var(--line-on-ink);border-radius:20px;white-space:nowrap;}
.status-dot{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px rgba(34,192,127,.18);flex:none;}
/* grouped as one visible segmented control, not two faint buttons, so it reads as a control at a glance */
.lang-switch{
  display:flex;gap:2px;flex:none;background:rgba(255,255,255,.06);
  border:1px solid var(--line-on-ink);border-radius:20px;padding:3px;
}
.lang-switch button,.lang-switch a{
  border:none;background:transparent;color:var(--muted-on-ink);
  font-family:ui-monospace,"Cascadia Code","SF Mono",Consolas,monospace;font-size:.72rem;font-weight:700;
  padding:6px 12px;border-radius:16px;cursor:pointer;letter-spacing:.04em;transition:color .15s,background .15s;
  text-decoration:none;display:inline-block;
}
.lang-switch button[aria-pressed="true"],.lang-switch a[aria-current="page"]{color:var(--brand-ink);background:#fff;cursor:default;}
.lang-switch button:not([aria-pressed="true"]):hover,.lang-switch a:not([aria-current="page"]):hover{color:#fff;}
.nav-toggle{
  display:none;flex:none;width:38px;height:38px;border:1px solid var(--line-on-ink);background:transparent;
  border-radius:3px;cursor:pointer;position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:9px;right:9px;height:2px;background:#fff;transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle span{top:18px;}
.nav-toggle span::before{content:"";top:-7px;}
.nav-toggle span::after{content:"";top:7px;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-7px) rotate(-45deg);}

@media (max-width:900px){
  .navlinks{display:none;}
  .status-pill{display:none;}
  .nav > .lang-switch{display:none;}
  .nav-cta{display:none;}
  .nav-toggle{display:block;}
  .mobile-panel{
    visibility:hidden;opacity:0;position:absolute;left:0;right:0;top:100%;z-index:60;
    background:var(--brand-ink);border-bottom:1px solid var(--line-on-ink);
    box-shadow:0 16px 30px -14px rgba(0,0,0,.5);padding:10px 0 22px;
    transition:opacity .15s ease;
  }
  .mobile-panel.open{visibility:visible;opacity:1;}
  @media (prefers-reduced-motion: reduce){ .mobile-panel{transition:none;} }
  .mobile-panel .wrap{display:flex;flex-direction:column;gap:4px;}
  .mobile-panel a{color:var(--text-on-ink);text-decoration:none;font-size:1rem;padding:12px 4px;border-bottom:1px solid var(--line-on-ink);}
  .mobile-panel a:last-of-type{border-bottom:none;}
  .mobile-panel .lang-switch{align-self:flex-start;margin-top:18px;}
}
@media (min-width:901px){ .mobile-panel{display:none!important;visibility:hidden!important;opacity:0!important;} }

/* ---------- hero ---------- */
.hero{position:relative;background:var(--brand-ink);color:var(--text-on-ink);overflow:hidden;border-bottom:1px solid var(--line-on-ink);}
.hero canvas{position:absolute;inset:0;width:100%;height:100%;opacity:.55;}
.hero-inner{position:relative;z-index:1;padding:108px 0 92px;max-width:760px;}
@media (max-width:960px){ .hero-inner{padding:64px 0 52px;} }
.hero h1{font-size:clamp(2.1rem,4.4vw,3.35rem);line-height:1.08;margin:18px 0 20px;color:#fff;}
.hero h1 em{font-style:normal;color:#8ea0ff;}
.hero p.lead{max-width:46ch;color:var(--muted-on-ink);font-size:1.06rem;}
.hero-cta{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap;}

/* ---------- rotating technology strip ---------- */
.tech{padding:44px 0;border-bottom:1px solid var(--line);}
.tech .cap{display:block;text-align:center;font-size:.72rem;color:var(--muted);margin-bottom:26px;}
/* rotates on its own, but is also a real click-and-drag scroller — not just a passive animation */
.logo-marquee{
  overflow-x:auto;overflow-y:hidden;cursor:grab;touch-action:pan-y;-webkit-user-select:none;user-select:none;
  mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
  scrollbar-width:none;-ms-overflow-style:none;
}
.logo-marquee::-webkit-scrollbar{display:none;}
.logo-marquee.dragging{cursor:grabbing;}
.logo-track{display:flex;align-items:center;gap:36px;width:max-content;}
.logo-track a{-webkit-user-drag:none;}
.logo-track img{pointer-events:none;} /* dragging shouldn't fight native image-drag or intercept the parent's pointer events */
.logo-mark,.logo-badge{flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;text-decoration:none;}
.logo-mark{background:#fff;border:1px solid var(--line);border-radius:6px;padding:11px 18px;}
.logo-mark img{height:20px;width:auto;display:block;}
.logo-badge img{height:44px;width:auto;border-radius:6px;display:block;}
@media (max-width:640px){ .logo-mark img{height:17px;} .logo-badge img{height:36px;} }

/* ---------- section shell ---------- */
section{padding:88px 0;}
.section-head{max-width:640px;margin-bottom:48px;}
.section-head h2{font-size:clamp(1.6rem,3vw,2.2rem);margin-top:14px;}
.section-head p{color:var(--muted);margin-top:14px;font-size:1.02rem;}
.section-alt{background:var(--paper-sunken);}

/* ---------- services ---------- */
.svc-groups{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);}
@media (max-width:900px){ .svc-groups{grid-template-columns:1fr;} }
.svc-group{background:var(--paper-raised);padding:30px 26px;}
.svc-group-head{margin-bottom:22px;}
.svc-group-head .mono{font-size:.68rem;letter-spacing:.12em;color:var(--accent);font-weight:700;}
.svc-item{padding:16px 0;border-top:1px solid var(--line);}
.svc-item:first-of-type{border-top:none;}
.svc-item h3{font-size:1rem;font-weight:700;margin-bottom:6px;}
.svc-item p{font-size:.9rem;color:var(--muted);}
.svc-custom{margin-top:1px;padding:26px 30px;background:var(--accent);color:#fff;display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;}
.svc-custom h3{font-size:1.05rem;margin-bottom:4px;}
.svc-custom p{color:rgba(255,255,255,.82);font-size:.9rem;}

/* ---------- process ---------- */
.process{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);}
@media (max-width:820px){ .process{grid-template-columns:1fr 1fr;} }
@media (max-width:560px){ .process{grid-template-columns:1fr;} }
.step{background:var(--paper-raised);padding:26px 22px;}
.step .mono{color:var(--accent);font-size:.78rem;font-weight:700;}
.step h3{font-size:1.02rem;margin:10px 0 8px;}
.step p{font-size:.86rem;color:var(--muted);}

/* ---------- about ---------- */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
@media (max-width:900px){ .about-grid{grid-template-columns:1fr;} }
.about-copy p{color:var(--muted);margin-top:16px;font-size:1rem;}
.about-copy ul{list-style:none;margin:22px 0 0;display:grid;gap:12px;}
.about-copy li{display:flex;gap:10px;align-items:flex-start;font-size:.92rem;color:var(--text);}
.about-copy li::before{content:"";width:6px;height:6px;margin-top:8px;background:var(--accent);flex:none;}
.diagram{aspect-ratio:1/1;position:relative;}
.diagram canvas{width:100%;height:100%;}
/* below the 2-column breakpoint the panel is full container width, and with
   aspect-ratio:1/1 that means full-viewport-tall — cap it so it doesn't
   dominate the page once About stacks to one column. */
@media (max-width:900px){ .diagram{max-width:420px;margin-inline:auto;} }

/* ---------- support / contact band ---------- */
.support{background:var(--brand-ink-2);color:var(--text-on-ink);}
.support-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:48px;align-items:center;}
@media (max-width:860px){ .support-grid{grid-template-columns:1fr;} }
.support h2{font-size:clamp(1.5rem,2.8vw,2rem);color:#fff;margin-top:12px;}
.support p.lead{color:var(--muted-on-ink);margin-top:14px;max-width:48ch;}
.support-actions{display:flex;gap:14px;margin-top:26px;flex-wrap:wrap;}
.contact-list{display:grid;gap:1px;background:var(--line-on-ink);border:1px solid var(--line-on-ink);}
.contact-row{background:var(--brand-ink);padding:16px 18px;display:flex;justify-content:space-between;gap:10px;}
.contact-row .k{font-size:.72rem;color:var(--muted-on-ink);letter-spacing:.06em;text-transform:uppercase;}
.contact-row .v{font-size:.92rem;font-weight:600;color:#fff;text-align:right;text-decoration:none;}
.contact-row .v:hover{color:#a9b8ff;}

/* ---------- footer ---------- */
footer{background:var(--brand-ink);color:var(--muted-on-ink);padding-top:64px;border-top:1px solid var(--line-on-ink);}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;}
@media (max-width:760px){ .footer-grid{grid-template-columns:1fr 1fr;} }
@media (max-width:560px){ .footer-grid{grid-template-columns:1fr;} }
.footer-brand img{height:24px;width:auto;margin-bottom:14px;}
.footer-brand p{font-size:.85rem;max-width:30ch;color:var(--muted-on-ink);}
.footer-col h4{font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:#fff;margin-bottom:14px;font-weight:700;}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:10px;}
.footer-col a{font-size:.86rem;color:var(--muted-on-ink);text-decoration:none;}
.footer-col a:hover{color:#fff;}
.footer-bottom{border-top:1px solid var(--line-on-ink);padding:20px 0;display:flex;justify-content:space-between;align-items:center;font-size:.76rem;flex-wrap:wrap;gap:10px;}
.footer-bottom a{color:var(--muted-on-ink);}
.footer-bottom a:hover{color:#fff;}

/* Fade transition used by the language switch */
.fade-out{opacity:0;transition:opacity .18s ease;}
.fade-in{opacity:1;transition:opacity .22s ease;}
@media (prefers-reduced-motion: reduce){ .fade-out,.fade-in{transition:none;} }

/* ---------- service detail pages ---------- */
.service-hero{background:var(--brand-ink);color:var(--text-on-ink);border-bottom:1px solid var(--line-on-ink);padding:56px 0 44px;}
.crumb{display:inline-flex;align-items:center;gap:.5em;font-size:.86rem;color:var(--muted-on-ink);text-decoration:none;margin-bottom:18px;}
.crumb:hover{color:#fff;}
.service-hero h1{color:#fff;font-size:clamp(1.9rem,3.6vw,2.6rem);margin:0 0 16px;}
.service-hero .summary{color:var(--muted-on-ink);max-width:62ch;font-size:1.04rem;}
.service-hero .summary strong{color:#fff;}
.service-hero-cta{display:flex;gap:14px;margin-top:26px;flex-wrap:wrap;}

.service-body{padding:64px 0;}
.service-body .wrap-narrow{max-width:760px;margin:0 auto;padding-inline:28px;}
@media (max-width:640px){ .service-body .wrap-narrow{padding-inline:20px;} }
.service-body article h2{font-size:1.5rem;font-weight:800;letter-spacing:-.01em;margin:0 0 14px;text-wrap:balance;}
.service-body article h2:not(:first-child){margin-top:44px;}
.service-body article h3{font-size:1.08rem;font-weight:700;margin:34px 0 14px;}
.service-body article > p{color:var(--text);line-height:1.75;}
.service-body article ul{list-style:none;margin:0;padding:0;display:grid;gap:11px;}
.service-body article ul li{display:flex;gap:10px;align-items:flex-start;color:var(--text);line-height:1.5;}
.service-body article ul li::before{content:"";width:6px;height:6px;margin-top:9px;background:var(--accent);flex:none;}
.service-body article dl{border:1px solid var(--line);border-radius:3px;padding:6px 0;margin:0;}
.service-body article dt{padding:16px 18px 4px;font-weight:700;font-size:.98rem;}
.service-body article dt:not(:first-of-type){border-top:1px solid var(--line);margin-top:6px;padding-top:20px;}
.service-body article dd{padding:0 18px 16px;margin:0;color:var(--muted);font-size:.94rem;line-height:1.6;}
.service-body article code{
  font-family:ui-monospace,"Cascadia Code","SF Mono",Consolas,monospace;font-size:.9em;
  background:var(--paper-sunken);border:1px solid var(--line);border-radius:3px;padding:.1em .4em;
}
.service-body article em{color:var(--muted);font-style:italic;}
.service-body article a{color:var(--accent);text-decoration:underline;text-underline-offset:.15em;}

.service-cta{background:var(--brand-ink-2);color:var(--text-on-ink);text-align:center;padding:56px 0;}
.service-cta h2{color:#fff;font-size:clamp(1.3rem,2.4vw,1.7rem);}
.service-cta p{color:var(--muted-on-ink);margin-top:12px;max-width:52ch;margin-inline:auto;}
.service-cta .hero-cta{justify-content:center;margin-top:24px;}