/* =====================================================
   iYuga Consultancy Services — Design tokens & system
   ===================================================== */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Source+Serif+4:opsz,wght@8..60,400;8..60,500;8..60,600&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root{
  /* --- color --- */
  --ink:        #101B33;   /* deep navy — headings, dark sections */
  --ink-2:      #1B2A4A;   /* lighter navy — card fills on dark   */
  --paper:      #F6F4EE;   /* warm ivory — base background        */
  --paper-2:    #ECE7D8;   /* deeper ivory — alt section band      */
  --marigold:   #E8A33D;   /* primary accent — CTA / highlight     */
  --marigold-d: #C67B1E;   /* marigold, pressed/hover              */
  --teal:       #2E7D6B;   /* secondary accent — data / tech       */
  --teal-d:     #1F5B4D;
  --slate:      #5B6472;   /* muted body text on light bg          */
  --slate-2:    #8B93A0;   /* faint text on dark bg                */
  --line:       #DBD3BE;   /* hairline dividers, light             */
  --line-dark:  rgba(246,244,238,0.14);
  --cream-text: #EFEBDD;

  /* --- type --- */
  --f-display: 'Space Grotesk', 'Segoe UI', sans-serif;
  --f-body:    'Source Serif 4', Georgia, serif;
  --f-mono:    'IBM Plex Mono', 'Courier New', monospace;

  /* --- layout --- */
  --maxw: 1180px;
  --pad: clamp(20px, 5vw, 64px);
  --radius: 4px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--f-body);
  font-size:17px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img,svg{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(--f-display);
  font-weight:600;
  line-height:1.12;
  margin:0 0 .5em;
  letter-spacing:-0.01em;
}
p{margin:0 0 1em;}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important; scroll-behavior:auto !important;}
}

:focus-visible{
  outline:2px solid var(--marigold);
  outline-offset:3px;
}

.wrap{max-width:var(--maxw); margin:0 auto; padding-left:var(--pad); padding-right:var(--pad);}

.eyebrow{
  font-family:var(--f-mono);
  font-size:12.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--teal-d);
  display:flex;
  align-items:center;
  gap:.6em;
  margin-bottom:1em;
}
.eyebrow::before{
  content:"";
  width:22px; height:1px;
  background:var(--marigold);
  display:inline-block;
}
section.on-dark .eyebrow{color:var(--marigold);}
section.on-dark .eyebrow::before{background:var(--cream-text);}

/* =================== HEADER / NAV =================== */
.site-header{
  position:sticky; top:0; z-index:100;
  background:rgba(246,244,238,0.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav{
  max-width:var(--maxw); margin:0 auto; padding:0 var(--pad);
  display:flex; align-items:center; justify-content:space-between;
  height:74px;
}
.brand{display:flex; align-items:center; gap:.65rem;}
.brand-mark{width:34px; height:34px; flex:none;}
.brand-text{font-family:var(--f-display); font-weight:700; font-size:1.05rem; letter-spacing:-.01em;}
.brand-text span{color:var(--marigold-d);}
.brand-sub{
  display:block; font-family:var(--f-mono); font-size:9.5px;
  letter-spacing:.16em; text-transform:uppercase; color:var(--slate); margin-top:1px;
}

.nav-links{display:flex; align-items:center; gap:2.1rem;}
.nav-links a{
  font-family:var(--f-mono); font-size:12.5px; letter-spacing:.06em; text-transform:uppercase;
  color:var(--ink); position:relative; padding:6px 0;
}
.nav-links a::after{
  content:""; position:absolute; left:0; bottom:0; width:0; height:2px;
  background:var(--marigold); transition:width .2s ease;
}
.nav-links a:hover::after, .nav-links a[aria-current="page"]::after{width:100%;}
.nav-links a[aria-current="page"]{color:var(--marigold-d);}

.nav-cta{
  font-family:var(--f-mono); font-size:12px; letter-spacing:.06em; text-transform:uppercase;
  background:var(--ink); color:var(--paper); padding:10px 18px; border-radius:var(--radius);
  border:1px solid var(--ink);
  transition:background .2s ease, color .2s ease;
}
.nav-cta:hover{background:transparent; color:var(--ink);}

.nav-toggle{
  display:none; background:none; border:none; cursor:pointer; padding:8px;
  flex-direction:column; gap:5px;
}
.nav-toggle span{width:24px; height:2px; background:var(--ink); display:block;}

@media (max-width: 880px){
  .nav-links{
    position:fixed; inset:74px 0 0 0; background:var(--paper);
    flex-direction:column; align-items:flex-start; gap:0;
    padding:8px var(--pad) 30px; height:0; overflow:hidden; visibility:hidden;
    transition:height .25s ease;
  }
  .nav-links.open{height:calc(100vh - 74px); visibility:visible; overflow:auto;}
  .nav-links a{width:100%; padding:16px 0; border-bottom:1px solid var(--line); font-size:14px;}
  .nav-links a::after{display:none;}
  .nav-cta{margin-top:18px; display:inline-block;}
  .nav-toggle{display:flex;}
}

/* =================== BUTTONS =================== */
.btn{
  display:inline-flex; align-items:center; gap:.5em;
  font-family:var(--f-mono); font-size:13px; letter-spacing:.05em; text-transform:uppercase;
  padding:13px 24px; border-radius:var(--radius); border:1px solid transparent;
  cursor:pointer; transition:transform .15s ease, background .2s ease, color .2s ease, border-color .2s ease;
}
.btn:hover{transform:translateY(-1px);}
.btn-primary{background:var(--marigold); color:var(--ink);}
.btn-primary:hover{background:var(--marigold-d);}
.btn-outline-dark{border-color:var(--ink); color:var(--ink);}
.btn-outline-dark:hover{background:var(--ink); color:var(--paper);}
.btn-outline-light{border-color:var(--cream-text); color:var(--cream-text);}
.btn-outline-light:hover{background:var(--cream-text); color:var(--ink);}

/* =================== SECTIONS =================== */
section{padding:88px 0;}
section.tight{padding:56px 0;}
section.on-dark{background:var(--ink); color:var(--cream-text);}
section.on-alt{background:var(--paper-2);}
section.on-dark h1, section.on-dark h2, section.on-dark h3{color:#fff;}
section.on-dark p{color:var(--slate-2);}

.section-head{max-width:640px; margin-bottom:48px;}
.section-head h2{font-size:clamp(1.7rem,3.4vw,2.5rem);}
.section-head p{color:var(--slate); font-size:1.05rem;}
section.on-dark .section-head p{color:var(--slate-2);}

/* =================== HERO =================== */
.hero{
  padding:64px 0 90px;
  background:
    radial-gradient(600px 320px at 88% -10%, rgba(232,163,61,.16), transparent 60%),
    var(--paper);
}
.hero-grid{display:grid; grid-template-columns:1.05fr .95fr; gap:56px; align-items:center;}
.hero h1{font-size:clamp(2.3rem, 4.6vw, 3.6rem); margin-bottom:.4em;}
.hero .lede{font-size:1.15rem; color:var(--slate); max-width:46ch; margin-bottom:1.8em;}
.hero-ctas{display:flex; gap:14px; flex-wrap:wrap;}
.hero-figure{position:relative;}

@media (max-width: 900px){
  .hero-grid{grid-template-columns:1fr; gap:40px;}
  .hero-figure{order:-1;}
}

/* =================== PIPELINE — signature element =================== */
.pipeline{
  display:grid; grid-template-columns:repeat(4,1fr); gap:0;
  border:1px solid var(--line-dark); border-radius:var(--radius); overflow:hidden;
}
.pipeline .node{
  padding:30px 20px; border-right:1px solid var(--line-dark); position:relative;
  background:var(--ink-2);
}
.pipeline .node:last-child{border-right:none;}
.pipeline .node .idx{
  font-family:var(--f-mono); font-size:11px; color:var(--marigold); letter-spacing:.1em;
}
.pipeline .node h4{color:#fff; font-size:1.02rem; margin:.5em 0 .35em;}
.pipeline .node p{color:var(--slate-2); font-size:.88rem; margin:0;}
.pipeline .node::after{
  content:"→"; position:absolute; right:-11px; top:50%; transform:translateY(-50%);
  color:var(--marigold); font-size:14px; z-index:2;
}
.pipeline .node:last-child::after{display:none;}
@media (max-width:820px){
  .pipeline{grid-template-columns:1fr;}
  .pipeline .node{border-right:none; border-bottom:1px solid var(--line-dark);}
  .pipeline .node::after{content:"↓"; right:auto; left:20px; top:auto; bottom:-11px;}
  .pipeline .node:last-child{border-bottom:none;}
}

/* =================== GRIDS / CARDS =================== */
.grid{display:grid; gap:28px;}
.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:900px){.grid-3,.grid-4{grid-template-columns:repeat(2,1fr);}}
@media (max-width:620px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr;}}

.card{
  background:#fff; border:1px solid var(--line); border-radius:var(--radius);
  padding:30px 26px;
}
.card .icon{width:40px; height:40px; margin-bottom:18px; color:var(--teal);}
.card h3{font-size:1.12rem; margin-bottom:.5em;}
.card p{color:var(--slate); font-size:.96rem; margin:0;}

.card-dark{
  background:var(--ink-2); border:1px solid var(--line-dark); border-radius:var(--radius); padding:30px 26px;
}
.card-dark h3{color:#fff; font-size:1.1rem; margin-bottom:.5em;}
.card-dark p{color:var(--slate-2); font-size:.95rem;}
.card-dark .icon{color:var(--marigold); width:38px; height:38px; margin-bottom:16px;}

/* number tag for stage/step lists that ARE real sequences */
.stage{display:flex; gap:20px; padding:26px 0; border-top:1px solid var(--line);}
.stage:last-child{border-bottom:1px solid var(--line);}
.stage .num{font-family:var(--f-mono); font-size:.85rem; color:var(--marigold-d); flex:none; width:56px; padding-top:3px;}
.stage h3{font-size:1.05rem; margin-bottom:.35em;}
.stage p{color:var(--slate); font-size:.95rem; margin:0;}

/* =================== STAT STRIP =================== */
.stats{display:grid; grid-template-columns:repeat(4,1fr); border:1px solid var(--line-dark); border-radius:var(--radius);}
.stats .stat{padding:26px 22px; border-right:1px solid var(--line-dark);}
.stats .stat:last-child{border-right:none;}
.stats .stat .n{font-family:var(--f-display); font-size:2rem; color:var(--marigold); font-weight:700;}
.stats .stat .l{font-family:var(--f-mono); font-size:11.5px; letter-spacing:.05em; color:var(--slate-2); text-transform:uppercase; margin-top:.4em;}
@media (max-width:700px){.stats{grid-template-columns:repeat(2,1fr);} .stats .stat:nth-child(2){border-right:none;}}

/* =================== LOGO / CLIENT STRIP =================== */
.client-strip{display:flex; flex-wrap:wrap; gap:14px;}
.client-chip{
  font-family:var(--f-mono); font-size:12.5px; letter-spacing:.03em;
  border:1px solid var(--line); border-radius:999px; padding:9px 18px; color:var(--slate);
  background:#fff;
}

/* =================== TAG LIST (expertise) =================== */
.tag-list{display:flex; flex-wrap:wrap; gap:10px;}
.tag{
  font-family:var(--f-mono); font-size:12.5px; letter-spacing:.03em; text-transform:uppercase;
  border:1px solid var(--line-dark); color:var(--cream-text); padding:9px 16px; border-radius:999px;
}

/* =================== QUOTE / MISSION BAND =================== */
.mission{
  border-left:3px solid var(--marigold); padding-left:28px; max-width:760px;
}
.mission p{font-family:var(--f-body); font-size:1.3rem; line-height:1.5; color:var(--ink);}
section.on-dark .mission p{color:#fff;}

/* =================== TIMELINE (about) =================== */
.timeline{border-left:1px solid var(--line); margin-left:8px;}
.timeline .tl-item{position:relative; padding:0 0 40px 34px;}
.timeline .tl-item::before{
  content:""; position:absolute; left:-6px; top:2px; width:11px; height:11px;
  border-radius:50%; background:var(--marigold); border:2px solid var(--paper); outline:2px solid var(--ink);
}
.timeline .tl-year{font-family:var(--f-mono); font-size:.85rem; color:var(--teal-d); margin-bottom:.3em;}
.timeline .tl-item h3{font-size:1.08rem; margin-bottom:.3em;}
.timeline .tl-item p{color:var(--slate); font-size:.95rem; margin:0;}

/* =================== TABLE (products/process) =================== */
.dtable{width:100%; border-collapse:collapse; font-size:.95rem;}
.dtable th,.dtable td{text-align:left; padding:14px 16px; border-bottom:1px solid var(--line);}
.dtable th{font-family:var(--f-mono); font-size:11.5px; letter-spacing:.06em; text-transform:uppercase; color:var(--slate);}

/* =================== CONTACT =================== */
.contact-grid{display:grid; grid-template-columns:1fr 1fr; gap:56px;}
@media (max-width:880px){.contact-grid{grid-template-columns:1fr;}}
.field{margin-bottom:20px;}
.field label{display:block; font-family:var(--f-mono); font-size:11.5px; letter-spacing:.07em; text-transform:uppercase; color:var(--slate); margin-bottom:8px;}
.field input, .field textarea{
  width:100%; border:1px solid var(--line); background:#fff; border-radius:var(--radius);
  padding:13px 14px; font-family:var(--f-body); font-size:1rem; color:var(--ink);
}
.field textarea{resize:vertical; min-height:120px;}
.field input:focus, .field textarea:focus{outline:2px solid var(--teal); outline-offset:1px;}

.info-row{display:flex; gap:16px; padding:20px 0; border-top:1px solid var(--line-dark);}
.info-row:last-child{padding-bottom:0;}
.info-row .ic{width:22px; height:22px; color:var(--marigold); flex:none; margin-top:2px;}
.info-row h4{font-family:var(--f-mono); font-size:11.5px; letter-spacing:.06em; text-transform:uppercase; color:var(--marigold); margin:0 0 .4em;}
.info-row p{color:var(--slate-2); margin:0; font-size:.95rem;}

/* =================== FOOTER =================== */
.site-footer{background:var(--ink); color:var(--slate-2); padding:70px 0 30px;}
.footer-grid{display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:40px; padding-bottom:50px; border-bottom:1px solid var(--line-dark);}
@media (max-width:800px){.footer-grid{grid-template-columns:1fr 1fr; row-gap:36px;}}
@media (max-width:500px){.footer-grid{grid-template-columns:1fr;}}
.footer-grid h4{font-family:var(--f-mono); font-size:11.5px; letter-spacing:.08em; text-transform:uppercase; color:#fff; margin-bottom:1.1em;}
.footer-grid ul li{margin-bottom:.6em;}
.footer-grid ul li a:hover{color:var(--marigold);}
.footer-brand p{max-width:34ch; color:var(--slate-2); font-size:.92rem;}
.footer-bottom{display:flex; justify-content:space-between; align-items:center; padding-top:26px; flex-wrap:wrap; gap:12px;}
.footer-bottom p{margin:0; font-family:var(--f-mono); font-size:11.5px; color:var(--slate-2);}
.footer-bottom .legal a{margin-left:18px; font-family:var(--f-mono); font-size:11.5px;}
.footer-bottom .legal a:hover{color:var(--marigold);}

/* =================== MISC =================== */
.divider{height:1px; background:var(--line); margin:70px 0;}
section.on-dark .divider{background:var(--line-dark);}
.breadcrumb{font-family:var(--f-mono); font-size:11.5px; letter-spacing:.06em; text-transform:uppercase; color:var(--slate-2);}
.breadcrumb a:hover{color:var(--marigold);}

.reveal{opacity:0; transform:translateY(14px); transition:opacity .6s ease, transform .6s ease;}
.reveal.in{opacity:1; transform:none;}

.page-hero{
  padding:56px 0 60px; background:var(--ink); color:#fff; position:relative; overflow:hidden;
}
.page-hero h1{color:#fff; font-size:clamp(2rem,4vw,2.9rem);}
.page-hero p{color:var(--slate-2); max-width:56ch; font-size:1.05rem;}