/* =========================================================
   Krishna Sharma — Business Systems Developer
   Design system: "Manual → Digital"
   ========================================================= */

:root{
  /* --- Color tokens --- */
  --ink-900:#0F1B24;
  --ink-800:#152430;
  --ink-700:#1C2E3B;
  --ink-600:#28404F;
  --line-on-ink: rgba(237,234,224,0.14);
  --line-on-ink-strong: rgba(237,234,224,0.26);

  --paper:#F2EEE4;
  --paper-2:#E8E2D2;
  --ink-text:#16232C;
  --ink-text-soft:#48586A;
  --paper-text:#EDEAE0;
  --paper-text-soft:#B9C2C9;
  --line-on-paper: rgba(22,35,44,0.12);

  --teal:#2FA6A0;
  --teal-dim:#1F7873;
  --amber:#E8A33D;
  --amber-dim:#B87A22;

  /* --- Type --- */
  --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;

  --radius-s:6px;
  --radius-m:10px;
  --radius-l:18px;

  --maxw:1180px;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *{animation-duration:0.01ms !important; animation-iteration-count:1 !important; transition-duration:0.01ms !important;}
}

body{
  margin:0;
  background:var(--ink-900);
  color:var(--paper-text);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:600;
  line-height:1.12;
  margin:0 0 0.5em;
  letter-spacing:-0.01em;
  color:var(--paper-text);
}
.on-paper h1,.on-paper h2,.on-paper h3,.on-paper h4{color:var(--ink-text);}

h1{font-size:clamp(2.4rem,5vw,4rem);}
h2{font-size:clamp(1.8rem,3.4vw,2.6rem);}
h3{font-size:1.3rem;}

p{margin:0 0 1em;color:var(--paper-text-soft);}
.on-paper p{color:var(--ink-text-soft);}

a{color:inherit;}
img{max-width:100%;display:block;}

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

.eyebrow{
  font-family:var(--font-mono);
  font-size:0.78rem;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--teal);
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:7px;height:7px;border-radius:50%;
  background:var(--teal);
  box-shadow:0 0 0 4px rgba(47,166,160,0.18);
}
.on-paper .eyebrow{color:var(--teal-dim);}

/* --- Buttons --- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:0.85rem;
  letter-spacing:0.04em;
  padding:13px 22px;
  border-radius:var(--radius-s);
  text-decoration:none;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .15s ease, background .2s ease, border-color .2s ease, color .2s ease;
}
.btn:hover{transform:translateY(-1px);}
.btn-primary{background:var(--teal);color:var(--ink-900);}
.btn-primary:hover{background:#3FBBB4;}
.btn-ghost{border-color:var(--line-on-ink-strong);color:var(--paper-text);}
.btn-ghost:hover{border-color:var(--teal);color:var(--teal);}
.on-paper .btn-ghost{border-color:var(--line-on-paper);color:var(--ink-text);}
.btn-amber{background:var(--amber);color:var(--ink-900);}
.btn-amber:hover{background:#F2B65A;}

/* --- Header / Nav --- */
header.site{
  position:sticky;top:0;z-index:50;
  background:rgba(15,27,36,0.86);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line-on-ink);
}
.nav{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 28px;max-width:var(--maxw);margin:0 auto;
}
.brand{
  font-family:var(--font-display);
  font-weight:600;font-size:1.15rem;
  text-decoration:none;color:var(--paper-text);
  display:flex;flex-direction:column;line-height:1.15;
}
.brand span{
  font-family:var(--font-mono);
  font-size:0.66rem;letter-spacing:0.1em;
  text-transform:uppercase;color:var(--amber);font-weight:400;
}
.nav-links{display:flex;align-items:center;gap:30px;list-style:none;margin:0;padding:0;}
.nav-links a{
  text-decoration:none;color:var(--paper-text-soft);
  font-size:0.94rem;transition:color .2s ease;
  position:relative;
}
.nav-links a:hover,.nav-links a.active{color:var(--paper-text);}
.nav-links a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-14px;height:2px;background:var(--teal);
}
.nav-cta{display:flex;align-items:center;gap:16px;}
.nav-toggle{display:none;background:none;border:none;color:var(--paper-text);font-size:1.6rem;cursor:pointer;}

@media (max-width:860px){
  .nav-links{
    position:fixed;inset:64px 0 0 0;background:var(--ink-900);
    flex-direction:column;padding:34px 28px;gap:22px;
    transform:translateY(-110%);transition:transform .3s ease;
    border-top:1px solid var(--line-on-ink);
  }
  .nav-links.open{transform:translateY(0);}
  .nav-toggle{display:block;}
  .nav-cta .btn{display:none;}
}

/* --- Sections --- */
section{padding:88px 0;}
section.tight{padding:56px 0;}
.section-on-paper{background:var(--paper);color:var(--ink-text);}
.section-on-ink-700{background:var(--ink-700);}

.section-head{max-width:640px;margin-bottom:52px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}

/* --- Hero --- */
.hero{padding:76px 0 60px;position:relative;overflow:hidden;}
.hero-grid{
  display:grid;grid-template-columns:1.05fr 0.95fr;gap:56px;align-items:center;
}
@media (max-width:960px){.hero-grid{grid-template-columns:1fr;}}
.hero h1{margin-bottom:22px;}
.hero .lede{font-size:1.12rem;max-width:520px;margin-bottom:34px;color:var(--paper-text-soft);}
.hero-ctas{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:40px;}

.hero-diagram{width:100%;height:auto;}

/* --- Stat / trust bar --- */
.statbar{
  display:grid;grid-template-columns:repeat(3,1fr);
  border-top:1px solid var(--line-on-ink);
  border-bottom:1px solid var(--line-on-ink);
}
.statbar .stat{
  padding:26px 20px;text-align:center;
  border-left:1px solid var(--line-on-ink);
}
.statbar .stat:first-child{border-left:none;}
.statbar .num{font-family:var(--font-mono);font-size:1.6rem;color:var(--teal);display:block;margin-bottom:6px;}
.statbar .label{font-family:var(--font-mono);font-size:0.72rem;letter-spacing:0.08em;text-transform:uppercase;color:var(--paper-text-soft);}
@media (max-width:700px){.statbar{grid-template-columns:1fr;}
  .statbar .stat{border-left:none;border-top:1px solid var(--line-on-ink);}
  .statbar .stat:first-child{border-top:none;}
}

/* --- Cards --- */
.grid{display:grid;gap:24px;}
.grid-2{grid-template-columns:repeat(2,1fr);}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}
@media (max-width:960px){.grid-3,.grid-4{grid-template-columns:repeat(2,1fr);}}
@media (max-width:640px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr;}}

.card{
  background:var(--ink-700);
  border:1px solid var(--line-on-ink);
  border-radius:var(--radius-m);
  padding:28px;
  transition:border-color .2s ease, transform .2s ease;
}
.card:hover{border-color:var(--line-on-ink-strong);transform:translateY(-3px);}
.card .tag{
  font-family:var(--font-mono);font-size:0.68rem;letter-spacing:0.08em;text-transform:uppercase;
  color:var(--amber);margin-bottom:12px;display:inline-block;
}
.card h3{margin-bottom:10px;}
.card p{margin-bottom:0;font-size:0.95rem;}

.on-paper .card{background:#fff;border-color:var(--line-on-paper);}

/* --- Pills / tags --- */
.pillrow{display:flex;flex-wrap:wrap;gap:10px;}
.pill{
  font-family:var(--font-mono);font-size:0.78rem;
  padding:8px 14px;border-radius:999px;
  border:1px solid var(--line-on-ink-strong);color:var(--paper-text-soft);
}
.on-paper .pill{border-color:var(--line-on-paper);color:var(--ink-text-soft);}

.chip{
  font-family:var(--font-mono);font-size:0.7rem;letter-spacing:0.03em;
  padding:5px 10px;border-radius:5px;background:var(--ink-600);color:var(--paper-text-soft);
  display:inline-block;margin:0 6px 6px 0;
}
.on-paper .chip{background:var(--paper-2);color:var(--ink-text-soft);}

/* --- Process steps --- */
.process{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative;}
@media (max-width:860px){.process{grid-template-columns:1fr;}}
.step{padding:0 24px 0 0;position:relative;}
.step .num{
  font-family:var(--font-mono);color:var(--teal);font-size:0.85rem;
  display:block;margin-bottom:14px;
}
.step h4{margin-bottom:8px;font-size:1.05rem;}
.step p{font-size:0.92rem;}
.process .step:not(:last-child)::after{
  content:"";position:absolute;top:6px;right:0;width:calc(100% - 0px);height:1px;
  background:var(--line-on-ink);
  display:none;
}
@media (min-width:861px){
  .process .step{border-left:1px solid var(--line-on-ink);padding-left:24px;}
  .process .step:first-child{border-left:none;padding-left:0;}
}

/* --- Case study rows --- */
.case{
  display:grid;grid-template-columns:0.9fr 1.5fr;gap:40px;
  padding:40px 0;border-top:1px solid var(--line-on-ink);
  align-items:start;
}
.case:last-child{border-bottom:1px solid var(--line-on-ink);}
@media (max-width:800px){.case{grid-template-columns:1fr;gap:16px;}}
.case .meta{font-family:var(--font-mono);font-size:0.75rem;color:var(--amber);text-transform:uppercase;letter-spacing:0.06em;margin-bottom:10px;}
.case h3{margin-bottom:12px;}
.case .outcome{
  font-family:var(--font-mono);font-size:0.85rem;color:var(--teal);
  border-left:2px solid var(--teal);padding-left:12px;margin:16px 0;
}

/* --- FAQ / accordion --- */
.faq-item{border-top:1px solid var(--line-on-ink);}
.faq-item:last-child{border-bottom:1px solid var(--line-on-ink);}
.faq-q{
  width:100%;text-align:left;background:none;border:none;cursor:pointer;
  color:var(--paper-text);font-family:var(--font-display);font-size:1.05rem;
  padding:22px 0;display:flex;justify-content:space-between;align-items:center;gap:20px;
}
.on-paper .faq-q{color:var(--ink-text);}
.faq-q .ico{font-family:var(--font-mono);color:var(--teal);font-size:1.1rem;flex:none;transition:transform .25s ease;}
.faq-item.open .ico{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a p{padding-bottom:22px;margin:0;}
.faq-item.open .faq-a{max-height:400px;}

/* --- CTA band --- */
.cta-band{
  background:linear-gradient(120deg,var(--ink-700),var(--ink-800));
  border:1px solid var(--line-on-ink);
  border-radius:var(--radius-l);
  padding:56px;text-align:center;
}
.cta-band h2{margin-bottom:14px;}
.cta-band p{max-width:480px;margin:0 auto 30px;}

/* --- Footer --- */
footer.site{border-top:1px solid var(--line-on-ink);padding:52px 0 30px;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:40px;}
@media (max-width:760px){.footer-grid{grid-template-columns:1fr 1fr;}}
.footer-grid h4{font-family:var(--font-mono);font-size:0.72rem;letter-spacing:0.08em;text-transform:uppercase;color:var(--paper-text-soft);margin-bottom:16px;}
.footer-grid ul{list-style:none;margin:0;padding:0;}
.footer-grid li{margin-bottom:10px;}
.footer-grid a{text-decoration:none;color:var(--paper-text-soft);font-size:0.92rem;}
.footer-grid a:hover{color:var(--teal);}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;
  padding-top:24px;border-top:1px solid var(--line-on-ink);
  font-family:var(--font-mono);font-size:0.75rem;color:var(--paper-text-soft);
}

/* --- Page hero (inner pages) --- */
.page-hero{padding:64px 0 50px;border-bottom:1px solid var(--line-on-ink);}
.page-hero h1{margin-bottom:16px;}
.page-hero .lede{max-width:640px;font-size:1.05rem;}

/* --- Breadcrumb --- */
.crumb{font-family:var(--font-mono);font-size:0.78rem;color:var(--paper-text-soft);margin-bottom:22px;}
.crumb a{color:var(--paper-text-soft);text-decoration:none;}
.crumb a:hover{color:var(--teal);}

/* --- Timeline (About) --- */
.timeline{border-left:1px solid var(--line-on-ink);margin-left:6px;}
.tl-item{position:relative;padding:0 0 40px 32px;}
.tl-item::before{
  content:"";position:absolute;left:-6px;top:4px;width:11px;height:11px;border-radius:50%;
  background:var(--ink-900);border:2px solid var(--teal);
}
.tl-item:last-child{padding-bottom:0;}
.tl-item .when{font-family:var(--font-mono);font-size:0.78rem;color:var(--amber);margin-bottom:6px;display:block;}

/* --- Form --- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
@media (max-width:640px){.form-grid{grid-template-columns:1fr;}}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:20px;}
.field.full{grid-column:1/-1;}
.field label{font-family:var(--font-mono);font-size:0.78rem;letter-spacing:0.04em;color:var(--paper-text-soft);}
.field input,.field select,.field textarea{
  background:var(--ink-800);border:1px solid var(--line-on-ink-strong);border-radius:var(--radius-s);
  padding:13px 14px;color:var(--paper-text);font-family:var(--font-body);font-size:0.95rem;
}
.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid var(--teal);outline-offset:1px;border-color:var(--teal);}
.field textarea{resize:vertical;min-height:130px;}

/* Visible keyboard focus everywhere */
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
  outline:2px solid var(--teal);outline-offset:2px;
}

/* Scroll reveal */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease, transform .6s ease;}
.reveal.in{opacity:1;transform:translateY(0);}

.small-note{font-size:0.85rem;color:var(--paper-text-soft);}
.on-paper .small-note{color:var(--ink-text-soft);}