/* =========================================================================
   KALSON TECH CONSULTING — shared design system
   Palette: deep petrol navy + disciplined cyan/teal accents
   Type: Sora (display) · Inter (body) · IBM Plex Mono (systems/utility)
   ========================================================================= */

:root{
  /* ---- surfaces ---- */
  --ink:      #071F2A;   /* page background — deep petrol navy */
  --ink-2:    #0A2836;   /* raised section band */
  --ink-3:    #0E3143;   /* card surface */
  --ink-4:    #12405780; /* hover / translucent lift */

  /* ---- text ---- */
  --paper:    #EAF3F5;   /* primary text */
  --paper-dim:#C4D8DE;   /* secondary text */
  --slate:    #8CA6B2;   /* muted body */
  --slate-2:  #61808D;   /* faint / captions */

  /* ---- accents ---- */
  --cyan:     #1FB6D4;   /* primary accent */
  --cyan-2:   #45C9E4;   /* light cyan */
  --teal:     #14B98A;   /* secondary accent (green-teal) */
  --cyan-soft:rgba(31,182,212,.13);
  --teal-soft:rgba(20,185,138,.12);

  /* ---- lines ---- */
  --line:     rgba(234,243,245,.13);
  --line-2:   rgba(234,243,245,.07);
  --line-cyan:rgba(31,182,212,.30);

  /* ---- system ---- */
  --maxw: 1200px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --ease: cubic-bezier(.22,.61,.36,1);
  --radius: 4px;
  --font-display: "Sora", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
}

*,*::before,*::after{ box-sizing:border-box; margin:0; padding:0; }

html{ scroll-behavior:smooth; -webkit-text-size-adjust:100%; }

body{
  background:var(--ink);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:clamp(1rem, .96rem + .2vw, 1.075rem);
  line-height:1.65;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

/* ambient background texture: faint grid + petrol glows, fixed */
body::before{
  content:"";
  position:fixed; inset:0; z-index:-2;
  background:
    radial-gradient(900px 600px at 82% -8%, rgba(31,182,212,.10), transparent 60%),
    radial-gradient(760px 620px at -6% 108%, rgba(20,185,138,.08), transparent 62%),
    var(--ink);
}
body::after{
  content:"";
  position:fixed; inset:0; z-index:-1; opacity:.5;
  background-image:
    linear-gradient(var(--line-2) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-2) 1px, transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(ellipse at 50% 0%, #000 30%, transparent 78%);
          mask-image:radial-gradient(ellipse at 50% 0%, #000 30%, transparent 78%);
}

img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }

.wrap{ width:min(100% - (var(--gutter) * 2), var(--maxw)); margin-inline:auto; }

/* ---------- shared type ---------- */
.eyebrow{
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--cyan);
  font-weight:500;
  display:inline-flex;
  align-items:center;
  gap:.6rem;
}
.eyebrow::before{
  content:""; width:26px; height:1px; background:var(--line-cyan);
}

h1,h2,h3,h4{ font-family:var(--font-display); font-weight:700; line-height:1.06; letter-spacing:-.02em; }
h2{ font-size:clamp(1.9rem, 1.4rem + 2.2vw, 3rem); }
h3{ font-size:clamp(1.25rem, 1.05rem + .8vw, 1.6rem); letter-spacing:-.015em; }
p{ color:var(--paper-dim); }
.lead{ font-size:clamp(1.1rem, 1rem + .5vw, 1.3rem); color:var(--paper-dim); line-height:1.55; }
.muted{ color:var(--slate); }

.section{ padding:clamp(4rem, 3rem + 6vw, 7.5rem) 0; position:relative; }
.section--band{ background:linear-gradient(180deg, var(--ink-2), transparent); border-block:1px solid var(--line-2); }
.section-head{ max-width:62ch; margin-bottom:clamp(2.25rem,4vw,3.5rem); }
.section-head h2{ margin-top:1rem; }
.section-head p{ margin-top:1.1rem; }

/* mono section index e.g. "// 02" */
.index{
  font-family:var(--font-mono);
  font-size:.72rem; letter-spacing:.14em; color:var(--slate-2);
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex; align-items:center; gap:.6rem;
  font-family:var(--font-mono); font-size:.82rem; letter-spacing:.04em;
  padding:.85rem 1.4rem; border-radius:var(--radius);
  border:1px solid transparent; cursor:pointer;
  transition:transform .25s var(--ease), background .25s var(--ease), border-color .25s var(--ease), color .25s var(--ease);
  will-change:transform;
}
.btn .arw{ transition:transform .25s var(--ease); }
.btn:hover .arw{ transform:translateX(4px); }
.btn--primary{ background:var(--cyan); color:#052029; font-weight:600; }
.btn--primary:hover{ background:var(--cyan-2); transform:translateY(-2px); }
.btn--ghost{ border-color:var(--line); color:var(--paper); }
.btn--ghost:hover{ border-color:var(--line-cyan); color:var(--cyan-2); background:var(--cyan-soft); }

/* ---------- header ---------- */
.site-header{
  position:sticky; top:0; z-index:60;
  background:color-mix(in srgb, var(--ink) 78%, transparent);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line-2);
}
.nav{
  display:flex; align-items:center; justify-content:space-between;
  height:74px; width:min(100% - (var(--gutter) * 2), var(--maxw)); margin-inline:auto;
}
.brand{ display:flex; align-items:center; gap:.7rem; }
.brand__mark{ width:34px; height:34px; flex:none; }
.brand__text{ display:flex; flex-direction:column; line-height:1; }
.brand__name{ font-family:var(--font-display); font-weight:800; font-size:1.15rem; letter-spacing:.02em; color:var(--paper); }
.brand__name b{ color:var(--teal); font-weight:800; }
.brand__sub{ font-family:var(--font-mono); font-size:.53rem; letter-spacing:.22em; text-transform:uppercase; color:var(--slate-2); margin-top:.28rem; }

.nav__links{ display:flex; align-items:center; gap:2rem; }
.nav__links a{
  font-family:var(--font-mono); font-size:.82rem; letter-spacing:.02em; color:var(--slate);
  transition:color .2s var(--ease); position:relative; padding:.3rem 0;
}
.nav__links a:hover,
.nav__links a[aria-current="page"]{ color:var(--paper); }
.nav__links a[aria-current="page"]::after{
  content:""; position:absolute; left:0; bottom:-2px; width:100%; height:1px; background:var(--cyan);
}
.nav__cta{ display:flex; align-items:center; gap:1.2rem; }
.nav__toggle{
  display:none; background:none; border:1px solid var(--line); border-radius:var(--radius);
  width:42px; height:42px; cursor:pointer; color:var(--paper); flex-direction:column; gap:5px;
  align-items:center; justify-content:center;
}
.nav__toggle span{ width:18px; height:1.5px; background:var(--paper); transition:.25s var(--ease); }

/* ---------- hero ---------- */
.hero{ position:relative; padding:clamp(3.5rem,3rem+5vw,6.5rem) 0 0; overflow:hidden; }
.hero__net{ position:absolute; inset:0; z-index:0; opacity:.5; pointer-events:none;
  -webkit-mask-image:linear-gradient(90deg, transparent, #000 40%, #000 100%);
          mask-image:linear-gradient(90deg, transparent, #000 40%, #000 100%); }
.hero__inner{ position:relative; z-index:1; max-width:52rem; }
.hero h1{ font-size:clamp(2.4rem, 1.6rem + 4.4vw, 4.6rem); margin:1.5rem 0 0; }
.hero h1 .accent{ color:var(--cyan); }
.hero__sub{ margin-top:1.6rem; max-width:44ch; }
.hero__actions{ margin-top:2.2rem; display:flex; flex-wrap:wrap; gap:1rem; }

/* proof / stat bar */
.proof{
  position:relative; z-index:1;
  margin-top:clamp(3rem,5vw,4.5rem);
  display:grid; grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);
}
.proof__item{ padding:1.5rem 1.5rem 1.6rem 0; border-right:1px solid var(--line-2); }
.proof__item:last-child{ border-right:0; }
.proof__num{ font-family:var(--font-display); font-weight:700; font-size:clamp(1.7rem,1.3rem+1.6vw,2.5rem); color:var(--paper); letter-spacing:-.02em; }
.proof__num span{ color:var(--teal); }
.proof__label{ font-family:var(--font-mono); font-size:.72rem; letter-spacing:.04em; color:var(--slate); margin-top:.4rem; }

/* markets ticker */
.ticker{ border-block:1px solid var(--line-2); overflow:hidden; padding:.9rem 0; margin-top:clamp(2.5rem,4vw,3.5rem); background:var(--ink-2); }
.ticker__track{ display:inline-flex; gap:2.5rem; white-space:nowrap; animation:scroll 42s linear infinite; }
.ticker__track span{ font-family:var(--font-mono); font-size:.8rem; letter-spacing:.06em; color:var(--slate); }
.ticker__track span::before{ content:"◦"; color:var(--cyan); margin-right:2.5rem; }
@keyframes scroll{ to{ transform:translateX(-50%); } }

/* ---------- card grids ---------- */
.grid{ display:grid; gap:1.25rem; }
.grid-2{ grid-template-columns:repeat(2,1fr); }
.grid-3{ grid-template-columns:repeat(3,1fr); }
.grid-4{ grid-template-columns:repeat(4,1fr); }

.card{
  background:var(--ink-3);
  border:1px solid var(--line-2);
  border-radius:var(--radius);
  padding:1.75rem;
  position:relative;
  transition:border-color .3s var(--ease), transform .3s var(--ease), background .3s var(--ease);
}
.card:hover{ border-color:var(--line-cyan); transform:translateY(-3px); }
.card__ico{
  width:44px; height:44px; border-radius:50%;
  display:grid; place-items:center; margin-bottom:1.1rem;
  background:var(--cyan-soft); color:var(--cyan);
}
.card--teal .card__ico{ background:var(--teal-soft); color:var(--teal); }
.card__ico svg{ width:22px; height:22px; }
.card h3{ font-size:1.18rem; margin-bottom:.6rem; }
.card p{ color:var(--slate); font-size:.96rem; line-height:1.6; }
.card__list{ list-style:none; margin-top:.9rem; display:flex; flex-direction:column; gap:.5rem; }
.card__list li{ font-size:.92rem; color:var(--paper-dim); padding-left:1.1rem; position:relative; }
.card__list li::before{ content:""; position:absolute; left:0; top:.62em; width:5px; height:5px; border-radius:50%; background:var(--cyan); }

/* service card as link */
.svc-card{ display:block; }
.svc-card .go{ font-family:var(--font-mono); font-size:.76rem; letter-spacing:.05em; color:var(--cyan); margin-top:1.1rem; display:inline-flex; gap:.4rem; align-items:center; opacity:.85; }
.svc-card:hover .go{ opacity:1; }

/* pull quote / statement band */
.statement{ border-left:2px solid var(--cyan); padding:.2rem 0 .2rem 1.5rem; margin-top:clamp(2.5rem,4vw,3.5rem); }
.statement p{ font-family:var(--font-display); font-weight:600; font-size:clamp(1.2rem,1rem+1vw,1.7rem); color:var(--paper); line-height:1.35; letter-spacing:-.01em; }

/* ---------- process (numbered — a real sequence) ---------- */
.steps{ display:grid; grid-template-columns:repeat(5,1fr); gap:0; border:1px solid var(--line-2); border-radius:var(--radius); overflow:hidden; }
.step{ padding:1.75rem 1.5rem; border-right:1px solid var(--line-2); position:relative; }
.step:last-child{ border-right:0; }
.step__n{ font-family:var(--font-mono); font-size:.8rem; color:var(--cyan); letter-spacing:.1em; }
.step h3{ font-size:1.1rem; margin:1.5rem 0 .7rem; }
.step p{ font-size:.9rem; color:var(--slate); line-height:1.55; }

/* ---------- split / feature rows ---------- */
.split{ display:grid; grid-template-columns:1.05fr .95fr; gap:clamp(2rem,5vw,4.5rem); align-items:center; }
.feature-list{ list-style:none; display:flex; flex-direction:column; gap:1.4rem; margin-top:2rem; }
.feature-list li{ display:grid; grid-template-columns:auto 1fr; gap:1.1rem; align-items:start; }
.feature-list .fi{ width:40px; height:40px; border-radius:50%; background:var(--cyan-soft); color:var(--cyan); display:grid; place-items:center; flex:none; }
.feature-list .fi svg{ width:20px; height:20px; }
.feature-list h4{ font-size:1.02rem; font-family:var(--font-display); font-weight:600; margin-bottom:.25rem; }
.feature-list p{ font-size:.94rem; color:var(--slate); }

/* mini numbered leadership list */
.leadlist{ list-style:none; display:flex; flex-direction:column; gap:1.6rem; }
.leadlist li{ display:grid; grid-template-columns:auto 1fr; gap:1.4rem; padding-bottom:1.6rem; border-bottom:1px solid var(--line-2); }
.leadlist li:last-child{ border-bottom:0; }
.leadlist .ln{ font-family:var(--font-mono); color:var(--teal); font-size:.9rem; padding-top:.3rem; }
.leadlist h4{ font-family:var(--font-display); font-weight:600; font-size:1.1rem; margin-bottom:.35rem; }
.leadlist p{ color:var(--slate); font-size:.95rem; }

/* ---------- tag clusters (industries / standards) ---------- */
.tags{ display:flex; flex-wrap:wrap; gap:.7rem; }
.tag{
  font-family:var(--font-mono); font-size:.82rem; letter-spacing:.02em;
  padding:.55rem 1rem; border:1px solid var(--line); border-radius:100px; color:var(--paper-dim);
  transition:border-color .25s var(--ease), color .25s var(--ease);
}
.tag:hover{ border-color:var(--line-cyan); color:var(--cyan-2); }

/* coverage columns */
.coverage{ display:grid; grid-template-columns:repeat(auto-fit,minmax(130px,1fr)); gap:.6rem 2rem; }
.coverage span{ font-family:var(--font-mono); font-size:.9rem; color:var(--paper-dim); padding:.5rem 0; border-bottom:1px solid var(--line-2); }

/* ---------- CTA band ---------- */
.cta-band{ background:linear-gradient(120deg, var(--ink-3), var(--ink-2)); border:1px solid var(--line); border-radius:6px; padding:clamp(2.5rem,5vw,4rem); text-align:center; position:relative; overflow:hidden; }
.cta-band::after{ content:""; position:absolute; inset:0; background:radial-gradient(600px 300px at 50% 0, rgba(31,182,212,.16), transparent 70%); pointer-events:none; }
.cta-band > *{ position:relative; }
.cta-band h2{ max-width:20ch; margin:1rem auto 0; }
.cta-band p{ max-width:52ch; margin:1.1rem auto 0; }
.cta-band .hero__actions{ justify-content:center; margin-top:2rem; }

/* ---------- page hero (interior pages) ---------- */
.page-hero{ padding:clamp(3.5rem,3rem+4vw,6rem) 0 clamp(2rem,3vw,3rem); border-bottom:1px solid var(--line-2); }
.page-hero h1{ font-size:clamp(2.2rem,1.6rem+3vw,3.6rem); margin-top:1.2rem; max-width:20ch; }
.page-hero p{ margin-top:1.3rem; max-width:56ch; }
.crumb{ font-family:var(--font-mono); font-size:.74rem; letter-spacing:.1em; color:var(--slate-2); }
.crumb a:hover{ color:var(--cyan); }

/* ---------- contact ---------- */
.contact-grid{ display:grid; grid-template-columns:1fr 1fr; gap:clamp(2rem,5vw,4rem); }
.field{ display:flex; flex-direction:column; gap:.5rem; margin-bottom:1.3rem; }
.field label{ font-family:var(--font-mono); font-size:.74rem; letter-spacing:.08em; text-transform:uppercase; color:var(--slate); }
.field input,.field textarea,.field select{
  background:var(--ink-2); border:1px solid var(--line); border-radius:var(--radius);
  padding:.85rem 1rem; color:var(--paper); font-family:var(--font-body); font-size:1rem; width:100%;
  transition:border-color .2s var(--ease);
}
.field input:focus,.field textarea:focus,.field select:focus{ outline:none; border-color:var(--cyan); }
.field textarea{ resize:vertical; min-height:130px; }
.contact-detail{ display:flex; flex-direction:column; gap:1.5rem; }
.contact-detail .row{ border-top:1px solid var(--line-2); padding-top:1.2rem; }
.contact-detail .k{ font-family:var(--font-mono); font-size:.74rem; letter-spacing:.08em; text-transform:uppercase; color:var(--slate); }
.contact-detail .v{ font-size:1.1rem; color:var(--paper); margin-top:.35rem; }
.contact-detail .v a:hover{ color:var(--cyan); }

/* ---------- footer ---------- */
.site-footer{ border-top:1px solid var(--line); background:var(--ink-2); margin-top:0; }
.footer-top{ display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:2.5rem; padding:clamp(3rem,5vw,4.5rem) 0 2.5rem; }
.footer-top .vision{ color:var(--slate); font-size:.95rem; margin-top:1.2rem; max-width:34ch; }
.foot-col h5{ font-family:var(--font-mono); font-size:.74rem; letter-spacing:.12em; text-transform:uppercase; color:var(--slate-2); margin-bottom:1.1rem; }
.foot-col ul{ list-style:none; display:flex; flex-direction:column; gap:.65rem; }
.foot-col a{ color:var(--paper-dim); font-size:.94rem; transition:color .2s var(--ease); }
.foot-col a:hover{ color:var(--cyan); }
.footer-bottom{ border-top:1px solid var(--line-2); padding:1.5rem 0; display:flex; justify-content:space-between; align-items:center; gap:1rem; flex-wrap:wrap; }
.footer-bottom p, .footer-bottom a{ font-family:var(--font-mono); font-size:.74rem; letter-spacing:.03em; color:var(--slate-2); }
.footer-bottom a:hover{ color:var(--cyan); }

/* ---------- reveal animation ---------- */
.reveal{ opacity:0; transform:translateY(22px); transition:opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in{ opacity:1; transform:none; }

/* ---------- responsive ---------- */
@media (max-width:1000px){
  .grid-4{ grid-template-columns:repeat(2,1fr); }
  .steps{ grid-template-columns:repeat(2,1fr); }
  .step{ border-bottom:1px solid var(--line-2); }
  .footer-top{ grid-template-columns:1fr 1fr; gap:2rem; }
}
@media (max-width:760px){
  .nav__links{
    position:fixed; inset:74px 0 auto 0; flex-direction:column; align-items:flex-start;
    gap:0; background:var(--ink-2); border-bottom:1px solid var(--line);
    padding:.5rem var(--gutter) 1.5rem; transform:translateY(-120%); transition:transform .35s var(--ease); z-index:59;
  }
  .nav__links.open{ transform:translateY(0); }
  .nav__links a{ width:100%; padding:1rem 0; border-bottom:1px solid var(--line-2); font-size:.95rem; }
  .nav__toggle{ display:flex; }
  .nav__cta .btn{ display:none; }
  .proof{ grid-template-columns:repeat(2,1fr); }
  .proof__item{ border-bottom:1px solid var(--line-2); padding-right:1rem; }
  .grid-2,.grid-3,.grid-4{ grid-template-columns:1fr; }
  .steps{ grid-template-columns:1fr; }
  .step{ border-right:0; }
  .split{ grid-template-columns:1fr; }
  .contact-grid{ grid-template-columns:1fr; }
  .footer-top{ grid-template-columns:1fr; }
}

@media (prefers-reduced-motion:reduce){
  *{ animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; scroll-behavior:auto !important; }
  .reveal{ opacity:1; transform:none; }
}
:focus-visible{ outline:2px solid var(--cyan); outline-offset:3px; border-radius:2px; }