/* Kiyan Smart Home — brand design system (matches print/poster identity) */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=IBM+Plex+Sans:wght@400;500;600&display=swap');

:root{
  --navy: #0F1E5C;      /* deep royal navy — headline word "SMART HOUSE" */
  --navy-2: #16266E;
  --blue: #2455E8;      /* bright electric blue — "KIYAN" wordmark */
  --blue-light: #4A78FF;
  --blue-soft: rgba(36,85,232,0.08);
  --sky: #EAF0FF;       /* pale blue tint for section backgrounds */
  --paper: #FFFFFF;
  --ink: #10162B;
  --ink-soft: #545E75;
  --ink-faint: #8892A6;
  --line: #DCE3F2;
  --line-strong: #C3CEE8;
  --emerald: #23A26D;   /* status/available */
  --max: 1120px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'IBM Plex Sans', sans-serif;
  color:var(--ink);
  background:var(--paper);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{
  font-family:'Space Grotesk', sans-serif;
  margin:0 0 .4em 0;
  line-height:1.15;
  letter-spacing:-0.01em;
  color:var(--navy);
}
p{margin:0 0 1em 0; color:var(--ink-soft);}
a{color:inherit;}
img{max-width:100%;display:block;}
.wrap{max-width:var(--max); margin:0 auto; padding:0 28px;}

a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible{
  outline:2px solid var(--blue);
  outline-offset:3px;
}

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

/* ---------- NAV ---------- */
.site-nav{
  background:var(--paper);
  border-bottom:1px solid var(--line);
  position:sticky; top:0; z-index:50;
  box-shadow:0 1px 0 rgba(15,30,92,0.03);
}
.site-nav .wrap{
  display:flex; align-items:center; justify-content:space-between;
  height:76px;
}
.brand{
  color:var(--navy);
  font-family:'Space Grotesk', sans-serif;
  font-weight:700;
  font-size:1.2rem;
  text-decoration:none;
  display:flex; align-items:center; gap:.4em;
}
.brand span{ color:var(--blue); }
.brand-logo{ height:44px; width:auto; display:block; }
.nav-links{
  display:flex; align-items:center; gap:2.2rem;
  list-style:none; margin:0; padding:0;
}
.nav-links a{
  color:var(--ink-soft);
  text-decoration:none;
  font-size:.96rem;
  padding:.3rem 0;
  border-bottom:2px solid transparent;
  transition:color .15s;
}
.nav-links a:hover, .nav-links a.active{
  color:var(--navy);
  border-bottom-color:var(--blue);
}
.nav-cta{
  background:var(--blue);
  color:#fff !important;
  padding:.6rem 1.2rem;
  border-radius:4px;
  font-weight:600;
  text-decoration:none;
  font-size:.92rem;
  border-bottom:none !important;
  transition:background .2s, box-shadow .2s;
}
.nav-cta:hover{ background:var(--navy); box-shadow:0 4px 14px rgba(36,85,232,0.25); }
.nav-toggle{display:none;}
.nav-toggle-label{display:none;}

@media (max-width: 820px){
  .nav-links{
    position:absolute; top:76px; left:0; right:0;
    background:var(--paper);
    flex-direction:column; align-items:flex-start;
    padding:1rem 28px 1.6rem;
    gap:1rem;
    border-bottom:1px solid var(--line);
    display:none;
  }
  .nav-toggle:checked ~ .nav-links{display:flex;}
  .nav-toggle-label{
    display:block;
    color:var(--navy);
    font-size:1.6rem;
    line-height:1;
    cursor:pointer;
    background:none; border:none;
  }
}

/* ---------- HERO ---------- */
.hero{
  padding:4.5rem 0 4rem;
  overflow:hidden;
  background:
    radial-gradient(circle at 85% -10%, rgba(36,85,232,0.10), transparent 45%),
    var(--sky);
  border-bottom:1px solid var(--line);
}
.hero .wrap{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:3rem;
  align-items:center;
}
@media (max-width:900px){
  .hero .wrap{grid-template-columns:1fr;}
  .hero-diagram{order:-1;}
}
.eyebrow-line{
  display:flex; align-items:center; gap:.7rem;
  color:var(--blue);
  font-size:.9rem;
  font-weight:600;
  margin-bottom:1.4rem;
}
.eyebrow-line .dot{
  width:7px; height:7px; border-radius:50%;
  background:var(--emerald);
  box-shadow:0 0 0 4px rgba(35,162,109,0.16);
}
.hero h1{
  font-size:clamp(2.1rem, 4vw, 3.1rem);
  color:var(--navy);
  max-width:15ch;
}
.hero p.lead{
  font-size:1.1rem;
  color:var(--ink-soft);
  max-width:46ch;
  margin-top:1.2rem;
}
.hero-ctas{display:flex; gap:1rem; margin-top:2rem; flex-wrap:wrap;}

.btn{
  display:inline-block;
  padding:.85rem 1.6rem;
  border-radius:4px;
  font-weight:600;
  font-size:.95rem;
  text-decoration:none;
  border:1px solid transparent;
  transition:box-shadow .2s, background .2s, border-color .2s, transform .15s;
}
.btn-primary{ background:var(--blue); color:#fff; }
.btn-primary:hover{ background:var(--navy); box-shadow:0 6px 18px rgba(36,85,232,0.3); transform:translateY(-1px); }
.btn-ghost{ border-color:var(--line-strong); color:var(--navy); background:#fff; }
.btn-ghost:hover{ border-color:var(--blue); color:var(--blue); }
.btn-dark{ background:var(--navy); color:#fff; border-color:var(--navy); }
.btn-dark:hover{ background:var(--navy-2); }

.hero-diagram svg{width:100%; height:auto;}
.hero-diagram img{
  width:100%;
  max-width:380px;
  height:auto;
  display:block;
  margin:0 auto;
}
@media (max-width:900px){
  .hero-diagram img{ max-width:300px; }
}

/* ---------- SECTIONS ---------- */
section{padding:4.5rem 0;}
section.section-alt{ background:var(--sky); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.section-head{
  max-width:56ch;
  margin-bottom:2.6rem;
  padding-bottom:1.6rem;
  border-bottom:1px solid var(--line);
}
.section-head h2{font-size:clamp(1.6rem, 2.6vw, 2.1rem); color:var(--navy);}
.section-head p{color:var(--ink-soft); font-size:1.02rem; margin:0;}

/* Services list */
.service-rows{border-top:1px solid var(--line);}
.service-row{
  display:grid;
  grid-template-columns:44px 1fr 1.3fr;
  gap:2rem;
  padding:2.2rem 0;
  border-bottom:1px solid var(--line);
}
@media (max-width:760px){
  .service-row{grid-template-columns:1fr; gap:.8rem;}
}
.service-row h3{font-size:1.25rem; margin-bottom:.5rem; color:var(--navy);}
.service-row .desc p{color:var(--ink-soft); margin-bottom:.6rem;}
.service-row ul{margin:0; padding-left:1.1rem; color:var(--ink-soft);}
.service-row li{margin-bottom:.3rem;}

.icon-badge{
  width:44px; height:44px;
  border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  background:var(--blue-soft);
  color:var(--blue);
}
.icon-badge.violet{ background:rgba(15,30,92,0.08); color:var(--navy); }
.icon-badge.green{ background:rgba(35,162,109,0.10); color:var(--emerald); }

/* Product callouts strip (poster-style) */
.product-strip{
  display:grid; grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
}
@media (max-width:820px){ .product-strip{grid-template-columns:repeat(2,1fr);} }
.product-item{
  background:#fff;
  padding:2rem 1.2rem;
  text-align:center;
}
.product-item .badge{
  width:56px; height:56px; margin:0 auto .9rem;
  border-radius:50%;
  background:var(--sky);
  display:flex; align-items:center; justify-content:center;
  color:var(--blue);
}
.product-item h4{ font-size:.95rem; color:var(--navy); margin:0; }

/* Device showcase */
.device-showcase{
  display:grid; grid-template-columns:repeat(3,1fr);
  gap:1.6rem;
}
@media (max-width:820px){ .device-showcase{grid-template-columns:1fr;} }
.device-card{
  border:1px solid var(--line);
  border-radius:8px;
  padding:1.6rem 1.6rem 1.8rem;
  background:#fff;
  transition:border-color .2s, box-shadow .2s, transform .2s;
}
.device-card:hover{ border-color:var(--blue); box-shadow:0 8px 24px rgba(36,85,232,0.10); transform:translateY(-2px); }
.device-card svg{width:100%; height:auto; display:block; margin-bottom:1rem;}
.device-card h4{font-size:1.02rem; margin-bottom:.35rem; color:var(--navy);}
.device-card p{color:var(--ink-soft); font-size:.92rem; margin:0;}

/* Process steps */
.process{
  counter-reset:step;
  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;}
}
.process .step{
  background:#fff;
  padding:2rem 1.7rem;
}
.process .step .num{
  font-family:'Space Grotesk', sans-serif;
  color:var(--blue);
  font-size:1.6rem;
  font-weight:700;
  margin-bottom:.8rem;
  display:block;
}
.process .step h4{font-size:1.05rem; color:var(--navy);}
.process .step p{color:var(--ink-soft); font-size:.94rem; margin:0;}

/* Coverage list */
.coverage-list{
  display:flex; flex-wrap:wrap; gap:.6rem 1rem;
  padding:0; margin:0; list-style:none;
}
.coverage-list li{
  border:1px solid var(--line-strong);
  padding:.5rem 1rem;
  border-radius:4px;
  font-size:.92rem;
  color:var(--navy);
  background:var(--sky);
  font-weight:500;
}

/* Two column panel */
.split{
  display:grid; grid-template-columns:1fr 1fr; gap:3rem; align-items:start;
}
@media (max-width:820px){ .split{grid-template-columns:1fr;} }

/* Values / approach list */
.plain-list{list-style:none; margin:0; padding:0;}
.plain-list li{
  padding:1.1rem 0;
  border-bottom:1px solid var(--line);
}
.plain-list li h4{font-size:1.02rem; margin-bottom:.3rem; color:var(--navy);}
.plain-list li p{color:var(--ink-soft); margin:0; font-size:.95rem;}

/* Contact */
.contact-grid{
  display:grid; grid-template-columns:1fr 1.1fr; gap:3.5rem;
}
@media (max-width:860px){ .contact-grid{grid-template-columns:1fr;} }
.contact-detail{display:flex; gap:1rem; padding:1.1rem 0; border-bottom:1px solid var(--line);}
.contact-detail .k{color:var(--ink-faint); min-width:110px; font-size:.9rem;}
.contact-detail .v a{color:var(--navy); text-decoration:none; font-weight:600;}
.contact-detail .v a:hover{color:var(--blue);}

form.enquiry{display:flex; flex-direction:column; gap:1.1rem;}
.field{display:flex; flex-direction:column; gap:.4rem;}
.field label{font-size:.88rem; color:var(--ink-soft);}
.field input, .field select, .field textarea{
  font-family:inherit; font-size:.98rem;
  padding:.75rem .9rem;
  border:1px solid var(--line-strong);
  border-radius:4px;
  background:#fff;
  color:var(--ink);
}
.field textarea{resize:vertical; min-height:110px;}
.field input:focus, .field select:focus, .field textarea:focus{ border-color:var(--blue); }
form.enquiry .btn{align-self:flex-start; border:none; cursor:pointer;}
.form-note{font-size:.85rem; color:var(--ink-faint); margin-top:-.3rem;}

/* CTA band */
.cta-band{
  background:var(--navy);
  padding:3.2rem 0;
}
.cta-band .wrap{
  display:flex; align-items:center; justify-content:space-between; gap:2rem; flex-wrap:wrap;
}
.cta-band h3{color:#fff; margin-bottom:.3rem; font-size:1.4rem;}
.cta-band p{color:#B9C4E8; margin:0;}
.cta-band .btn-primary{ background:#fff; color:var(--navy); }
.cta-band .btn-primary:hover{ background:var(--sky); box-shadow:none; }

/* Footer */
footer{
  background:var(--navy); color:#B9C4E8;
  padding:3rem 0 2rem;
}
.footer-grid{
  display:grid; grid-template-columns:1.4fr 1fr 1fr;
  gap:2rem;
  padding-bottom:2rem;
  border-bottom:1px solid rgba(255,255,255,0.12);
}
@media (max-width:700px){ .footer-grid{grid-template-columns:1fr;} }
.footer-grid h5{
  color:#fff; font-size:.85rem;
  margin:0 0 1rem 0; font-weight:600;
}
.footer-grid ul{list-style:none; margin:0; padding:0;}
.footer-grid li{margin-bottom:.55rem; font-size:.92rem;}
.footer-grid a{text-decoration:none; color:#B9C4E8;}
.footer-grid a:hover{color:#fff;}
.footer-bottom{
  padding-top:1.4rem;
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:.6rem;
  font-size:.85rem; color:#7C8AC0;
}

/* Page header (non-home pages) */
.page-header{
  padding:3.4rem 0 3rem;
  background:var(--sky);
  border-bottom:1px solid var(--line);
}
.page-header h1{color:var(--navy); font-size:clamp(1.9rem,3.4vw,2.6rem); max-width:22ch;}
.page-header p{color:var(--ink-soft); max-width:52ch; margin-top:.8rem;}

.timeline-note{
  border-left:2px solid var(--blue);
  padding-left:1.3rem;
}

.mt-0{margin-top:0;}
.text-soft{color:var(--ink-soft);}