/* ============================================================
   CompanySathi — Design System
   Elegant, minimal, white + gold. A single gold hairline is the
   signature thread that ties every page together.
   ============================================================ */

:root{
  --ink:#1C1C1C;
  --ink-soft:#5B584F;
  --ink-faint:#96917F;
  --paper:#FFFFFF;
  --paper-warm:#FAF8F3;
  --gold:#A6822F;
  --gold-deep:#8A6A24;
  --gold-pale:#F4EDDC;
  --line:#EAE3D4;
  --radius:2px;
  --maxw:1180px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:'Inter',-apple-system,sans-serif;
  color:var(--ink);
  background:var(--paper);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{
  font-family:'Playfair Display',Georgia,serif;
  font-weight:600;
  line-height:1.18;
  margin:0;
  color:var(--ink);
  letter-spacing:-.01em;
}
h1{font-size:clamp(2.6rem,5.2vw,4.2rem);font-weight:600}
h2{font-size:clamp(1.9rem,3.4vw,2.7rem)}
h3{font-size:1.25rem;font-weight:600}
p{margin:0;color:var(--ink-soft)}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer}
.container{max-width:var(--maxw);margin:0 auto;padding:0 2.5rem}
@media(max-width:640px){.container{padding:0 1.5rem}}

::selection{background:var(--gold-pale);color:var(--ink)}

/* ---- eyebrow / signature gold thread ---- */
.eyebrow{
  display:inline-flex;align-items:center;gap:.6rem;
  font-size:.72rem;font-weight:600;letter-spacing:.22em;text-transform:uppercase;
  color:var(--gold-deep);margin-bottom:1.1rem;
}
.eyebrow::before{content:'';width:28px;height:1px;background:var(--gold)}
.eyebrow.center{justify-content:center}

.thread{width:56px;height:1px;background:var(--gold);margin:1.5rem 0}
.thread.center{margin-left:auto;margin-right:auto}

/* ---- buttons ---- */
.btn{
  display:inline-flex;align-items:center;gap:.6rem;
  font-size:.88rem;font-weight:600;letter-spacing:.02em;
  padding:.95rem 1.9rem;border-radius:var(--radius);
  border:1px solid transparent;transition:all .35s cubic-bezier(.4,0,.2,1);
  white-space:nowrap;
}
.btn svg{transition:transform .35s cubic-bezier(.4,0,.2,1)}
.btn:hover svg{transform:translateX(4px)}
.btn-gold{background:var(--gold);color:#fff;border-color:var(--gold)}
.btn-gold:hover{background:var(--gold-deep);border-color:var(--gold-deep)}
.btn-line{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-line:hover{background:var(--ink);color:#fff}
.btn-line-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn-line-light:hover{background:#fff;color:var(--ink);border-color:#fff}

/* ---- nav ---- */
.nav{
  position:sticky;top:0;z-index:1000;
  background:rgba(255,255,255,.92);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:84px}
.brand{display:flex;align-items:center;gap:.7rem}
.brand img{height:34px;width:auto}
.brand-text{font-family:'Playfair Display',serif;font-size:1.28rem;font-weight:600;letter-spacing:-.01em}
.brand-text .sathi{color:var(--gold)}
.nav-links{display:flex;align-items:center;gap:2.6rem}
.nav-links a{
  font-size:.86rem;font-weight:500;color:var(--ink-soft);
  position:relative;padding:.3rem 0;transition:color .3s ease;
}
.nav-links a::after{
  content:'';position:absolute;left:0;bottom:-2px;width:0;height:1px;
  background:var(--gold);transition:width .3s ease;
}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after,.nav-links a.current::after{width:100%}
.nav-links a.current{color:var(--ink);font-weight:600}
.nav-cta{
  font-size:.82rem;font-weight:600;color:var(--ink);
  border:1px solid var(--ink);padding:.65rem 1.5rem;border-radius:var(--radius);
  transition:all .3s ease;
}
.nav-cta:hover{background:var(--ink);color:#fff}
.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:none;padding:0}
.hamburger span{width:24px;height:1.5px;background:var(--ink)}
.mobile-menu{display:none}

@media(max-width:900px){
  .nav-links{display:none}
  .hamburger{display:flex}
  .mobile-menu.open{
    display:flex;flex-direction:column;gap:0;position:fixed;top:84px;left:0;right:0;bottom:0;
    background:#fff;z-index:999;padding:2rem 2.5rem;
  }
  .mobile-menu a{padding:1.1rem 0;border-bottom:1px solid var(--line);font-size:1.05rem;color:var(--ink)}
  .mobile-menu .nav-cta{margin-top:1.5rem;text-align:center}
}

/* ---- footer ---- */
.footer{background:var(--ink);color:rgba(255,255,255,.6);padding:5rem 0 2rem}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:3rem;padding-bottom:3.5rem;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand .brand-text{color:#fff}
.footer-brand p{color:rgba(255,255,255,.55);margin:1.25rem 0 0;max-width:280px;font-size:.9rem}
.footer h4{color:#fff;font-family:'Inter',sans-serif;font-size:.78rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;margin-bottom:1.4rem}
.footer ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.85rem}
.footer a{color:rgba(255,255,255,.6);font-size:.9rem;position:relative;transition:color .3s ease}
.footer a:hover{color:var(--gold)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding-top:1.75rem;font-size:.8rem;flex-wrap:wrap;gap:1rem}
.footer-bottom a{color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:var(--gold)}
@media(max-width:900px){.footer-grid{grid-template-columns:1fr 1fr;gap:2.5rem}}
@media(max-width:600px){.footer-grid{grid-template-columns:1fr}}

/* ---- section basics ---- */
.section{padding:7rem 0}
.section-warm{background:var(--paper-warm)}
.section-ink{background:var(--ink);color:#fff}
.section-ink h2,.section-ink h3{color:#fff}
.section-head{max-width:640px;margin-bottom:3.5rem}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head p{margin-top:1rem;font-size:1.05rem}

@media(max-width:640px){.section{padding:4.5rem 0}}

/* ---- reveal on scroll ---- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .8s ease,transform .8s ease}
.reveal.visible{opacity:1;transform:translateY(0)}

/* ---- page hero (interior pages) ---- */
.page-hero{padding:11rem 0 4.5rem;text-align:center;border-bottom:1px solid var(--line)}
.page-hero .eyebrow{justify-content:center}
.breadcrumb{font-size:.82rem;color:var(--ink-faint);margin-top:1rem}
.breadcrumb a:hover{color:var(--gold)}

/* ---- cards ---- */
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:2.5rem 2.2rem;transition:all .4s cubic-bezier(.4,0,.2,1);position:relative;
}
.card:hover{border-color:var(--gold);transform:translateY(-4px);box-shadow:0 24px 48px rgba(28,28,28,.06)}
.card-icon{
  width:46px;height:46px;display:flex;align-items:center;justify-content:center;
  margin-bottom:1.5rem;color:var(--gold);transition:transform .4s cubic-bezier(.34,1.56,.64,1);
}
.card:hover .card-icon{transform:scale(1.12) rotate(-4deg)}
.card h3{margin-bottom:.6rem}
.card p{font-size:.92rem}
.card-arrow{display:inline-flex;align-items:center;gap:.4rem;margin-top:1.4rem;font-size:.82rem;font-weight:600;color:var(--gold)}
.card-arrow svg{transition:transform .3s cubic-bezier(.34,1.56,.64,1)}
.card:hover .card-arrow svg{transform:translateX(5px)}

/* ---- grids ---- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:1.75rem}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:4rem;align-items:center}
@media(max-width:900px){.grid-3{grid-template-columns:1fr 1fr}.grid-2{grid-template-columns:1fr;gap:3rem}}
@media(max-width:640px){.grid-3{grid-template-columns:1fr}}

/* ---- stat ---- */
.stat-num{font-family:'Playfair Display',serif;font-size:2.6rem;font-weight:600;color:var(--gold);line-height:1}
.stat-label{font-size:.85rem;color:var(--ink-soft);margin-top:.4rem}

/* ---- form ---- */
.field{margin-bottom:1.4rem;display:flex;flex-direction:column;gap:.5rem}
.field label{font-size:.8rem;font-weight:600;letter-spacing:.03em}
.field input,.field textarea,.field select{
  border:1px solid var(--line);border-radius:var(--radius);padding:.9rem 1.1rem;
  font-family:inherit;font-size:.95rem;color:var(--ink);background:#fff;
  transition:border-color .3s ease;outline:none;width:100%;
}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--gold)}
.field textarea{resize:vertical;min-height:130px}
.submit-btn{
  width:100%;background:var(--ink);color:#fff;font-weight:600;font-size:.92rem;
  padding:1.05rem;border:none;border-radius:var(--radius);transition:background .3s ease;
  display:flex;align-items:center;justify-content:center;gap:.6rem;
}
.submit-btn:hover{background:var(--gold)}

/* ---- fade/slide-up load animation ---- */
@keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}
.load-in{opacity:0;animation:fadeUp .9s ease forwards}

/* ---- whatsapp float ---- */
.whatsapp-float{
  position:fixed;bottom:2rem;right:2rem;width:58px;height:58px;background:#25D366;
  border-radius:50%;display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 16px rgba(37,211,102,.4);z-index:999;transition:all .3s ease;
  animation:whatsappPulse 2.4s infinite;
}
.whatsapp-float:hover{transform:scale(1.1);box-shadow:0 6px 24px rgba(37,211,102,.5)}
@keyframes whatsappPulse{
  0%{box-shadow:0 4px 16px rgba(37,211,102,.4)}
  50%{box-shadow:0 4px 16px rgba(37,211,102,.4),0 0 0 10px rgba(37,211,102,.15)}
  100%{box-shadow:0 4px 16px rgba(37,211,102,.4),0 0 0 20px rgba(37,211,102,0)}
}
@media(max-width:640px){.whatsapp-float{bottom:1.25rem;right:1.25rem;width:52px;height:52px}}