/* ===========================================================
   Crown Fluid Systems — Design tokens
   Palette: charcoal #14181B, surface #1C2226, steel #3F6B82,
            brass #C08A3E, off-white #EDEAE3, line #2A3338
   Type: Oswald (display), Inter (body), IBM Plex Mono (data)
=========================================================== */
:root{
  --charcoal:#14181B;
  --surface:#1C2226;
  --surface-2:#222A2F;
  --steel:#3F6B82;
  --steel-light:#5C8CA3;
  --brass:#C08A3E;
  --brass-light:#D9A85C;
  --paper:#EDEAE3;
  --paper-dim:#B9B6AD;
  --line:#2A3338;
  --line-light:#DDD8CC;
  --whatsapp:#25D366;
  --radius:2px;
  --maxw:1180px;
  --display:'Oswald', sans-serif;
  --body:'Inter', sans-serif;
  --mono:'IBM Plex Mono', monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--body);
  color:var(--paper);
  background:var(--charcoal);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
h1,h2,h3{font-family:var(--display);font-weight:600;margin:0;letter-spacing:.01em;}
p{margin:0;line-height:1.6;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brass-light);outline-offset:3px;}

.section{padding:96px 24px;}
.section-inner{max-width:var(--maxw);margin:0 auto;}
.kicker{
  display:inline-block;
  font-family:var(--mono);
  font-size:12.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--brass);
  margin-bottom:18px;
}
.kicker-light{color:var(--brass-light);}
.section-title{
  font-size:clamp(28px,4vw,42px);
  color:var(--charcoal);
  max-width:720px;
  margin-bottom:14px;
}
.section-title-light{color:var(--paper);}
.section-sub{
  max-width:560px;
  color:#4B5359;
  font-size:16px;
  margin-bottom:48px;
}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 24px;
  font-family:var(--body);
  font-weight:600;
  font-size:14.5px;
  border-radius:var(--radius);
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .15s ease, background .2s ease, border-color .2s ease, color .2s ease;
  white-space:nowrap;
}
.btn:hover{transform:translateY(-1px);}
.btn-primary{background:var(--brass);color:var(--charcoal);}
.btn-primary:hover{background:var(--brass-light);}
.btn-outline{border-color:rgba(237,234,227,.4);color:var(--paper);}
.btn-outline:hover{border-color:var(--paper);}
.btn-whatsapp{background:var(--whatsapp);color:#08210f;padding:10px 16px;}
.btn-whatsapp:hover{background:#2fe277;}
.btn-call{border:1px solid var(--line);color:var(--paper);padding:10px 18px;}
.btn-call:hover{border-color:var(--paper);}
.btn-block{width:100%;}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(20,24,27,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  max-width:var(--maxw);
  margin:0 auto;
  padding:14px 24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.brand{display:flex;align-items:center;gap:12px;color:var(--paper);}
.brand-mark{color:var(--brass);display:flex;}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-name{font-family:var(--display);font-size:18px;font-weight:600;letter-spacing:.03em;color:var(--paper);}
.brand-name-light{color:var(--paper-dim);font-weight:500;}
.brand-tag{font-family:var(--mono);font-size:10px;letter-spacing:.18em;color:var(--brass);margin-top:2px;}

.main-nav{display:flex;gap:32px;}
.main-nav a{
  font-size:14px;font-weight:500;color:var(--paper-dim);
  position:relative;padding:4px 0;
  transition:color .2s ease;
}
.main-nav a:hover{color:var(--paper);}
.main-nav a::after{
  content:"";position:absolute;left:0;bottom:-2px;height:1px;width:0;
  background:var(--brass);transition:width .2s ease;
}
.main-nav a:hover::after{width:100%;}

.header-actions{display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:34px;height:34px;background:none;border:1px solid var(--line);
  border-radius:var(--radius);cursor:pointer;
}
.nav-toggle span{display:block;width:16px;height:2px;background:var(--paper);margin:0 auto;}

/* ===== Hero ===== */
.hero{
  position:relative;
  overflow:hidden;
  padding:120px 24px 100px;
  background:
    radial-gradient(circle at 80% 20%, rgba(192,138,62,.10), transparent 50%),
    radial-gradient(circle at 10% 90%, rgba(63,107,130,.18), transparent 55%),
    var(--charcoal);
  border-bottom:1px solid var(--line);
}
.hero-grid{
  position:absolute;inset:0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size:64px 64px;
  opacity:.25;
  mask-image:radial-gradient(circle at 50% 30%, black, transparent 75%);
}
.hero-schematic{
  position:absolute;
  right:-120px;top:50%;
  transform:translateY(-50%);
  width:620px;height:620px;
  color:var(--steel);
  opacity:.35;
}
.hero-content{position:relative;max-width:680px;margin:0 auto;text-align:left;max-width:var(--maxw);}
.eyebrow{
  font-family:var(--mono);font-size:12.5px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--steel-light);margin-bottom:22px;
}
.hero h1{
  font-size:clamp(38px,6vw,68px);
  line-height:1.04;
  color:var(--paper);
  max-width:780px;
  margin-bottom:26px;
}
.hero h1 span{color:var(--brass);}
.hero-sub{
  font-size:17px;color:var(--paper-dim);max-width:560px;margin-bottom:36px;
}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:64px;}
.hero-stats{
  display:flex;gap:48px;flex-wrap:wrap;
  border-top:1px solid var(--line);padding-top:28px;margin:0;max-width:680px;
}
.hero-stats dt{
  font-family:var(--mono);font-size:11px;text-transform:uppercase;letter-spacing:.1em;
  color:var(--paper-dim);margin-bottom:6px;
}
.hero-stats dd{margin:0;font-family:var(--display);font-size:17px;color:var(--paper);}

/* ===== About ===== */
.about{background:var(--paper);}
.about-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:64px;}
.about-label h2{color:var(--charcoal);font-size:clamp(26px,3.4vw,36px);line-height:1.2;}
.about-copy p{color:#3A4045;margin-bottom:18px;font-size:15.5px;}
.about-points{margin-top:32px;display:flex;flex-direction:column;gap:20px;}
.point{display:flex;gap:16px;align-items:flex-start;}
.point-num{
  font-family:var(--mono);font-size:13px;color:var(--brass);
  border:1px solid var(--brass);border-radius:50%;
  width:30px;height:30px;flex:none;
  display:flex;align-items:center;justify-content:center;
}
.point p{margin:0;color:#3A4045;font-size:14.5px;padding-top:4px;}

/* ===== Products ===== */
.products{background:var(--paper);}
.product-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:1px;
  background:var(--line-light);
  border:1px solid var(--line-light);
}
.product-card{
  background:var(--paper);
  padding:36px 30px;
  display:flex;flex-direction:column;gap:14px;
}
.product-card--wide{grid-column:span 2;}
@media (max-width:980px){.product-card--wide{grid-column:span 2;}}
@media (max-width:640px){.product-card--wide{grid-column:span 1;}}
.product-icon{color:var(--brass);}
.product-card h3{font-size:19px;color:var(--charcoal);}
.product-card p{color:#4B5359;font-size:14.5px;}
.product-list{display:flex;flex-direction:column;gap:7px;margin-top:6px;}
.product-list li{
  font-size:13.5px;color:#5C6369;
  padding-left:14px;position:relative;
}
.product-list li::before{
  content:"";position:absolute;left:0;top:7px;width:6px;height:1px;background:var(--steel);
}
.product-list--row{flex-direction:row;flex-wrap:wrap;gap:18px;}
.product-list--row li{padding-left:14px;}

.products-cta{
  margin-top:48px;
  display:flex;align-items:center;justify-content:space-between;
  flex-wrap:wrap;gap:18px;
  padding-top:32px;border-top:1px solid var(--line-light);
}
.products-cta p{color:#4B5359;font-size:15px;}

/* ===== Why ===== */
.why{background:var(--charcoal);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;}
.why-card{
  border:1px solid var(--line);
  padding:28px 22px;
  border-radius:var(--radius);
  background:var(--surface);
}
.why-num{font-family:var(--mono);font-size:12px;color:var(--brass);letter-spacing:.08em;}
.why-card h3{color:var(--paper);font-size:18px;margin:14px 0 10px;}
.why-card p{color:var(--paper-dim);font-size:14px;}

/* ===== Industries ===== */
.industries{background:var(--paper);}
.industry-row{display:flex;flex-wrap:wrap;gap:12px;}
.industry-chip{
  border:1px solid var(--line-light);
  padding:10px 18px;
  border-radius:999px;
  font-size:13.5px;
  color:#3A4045;
  font-family:var(--mono);
  letter-spacing:.01em;
}

/* ===== Contact ===== */
.contact{background:var(--charcoal);padding-bottom:0;}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;padding-bottom:80px;}
.contact-sub{color:var(--paper-dim);font-size:15.5px;max-width:480px;margin-bottom:36px;}
.contact-cards{display:flex;flex-direction:column;gap:14px;}
.contact-card{
  display:flex;align-items:center;gap:16px;
  border:1px solid var(--line);
  background:var(--surface);
  padding:18px 20px;
  border-radius:var(--radius);
  transition:border-color .2s ease, transform .15s ease;
}
.contact-card:not(.contact-card--static):hover{border-color:var(--brass);transform:translateY(-1px);}
.contact-card-icon{
  flex:none;width:42px;height:42px;
  display:flex;align-items:center;justify-content:center;
  background:var(--charcoal);border-radius:50%;color:var(--brass);
}
.contact-card strong{display:block;font-family:var(--display);font-size:15px;color:var(--paper);margin-bottom:3px;font-weight:500;}
.contact-card span span{font-size:13.5px;color:var(--paper-dim);}

.contact-form{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:32px;
  display:flex;flex-direction:column;gap:16px;
  height:fit-content;
}
.contact-form h3{color:var(--paper);font-size:19px;margin-bottom:6px;}
.contact-form label{
  display:flex;flex-direction:column;gap:7px;
  font-size:13px;color:var(--paper-dim);font-family:var(--mono);letter-spacing:.03em;
}
.contact-form input,.contact-form textarea{
  font-family:var(--body);
  background:var(--charcoal);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:11px 13px;
  color:var(--paper);
  font-size:14.5px;
  resize:vertical;
}
.contact-form input:focus,.contact-form textarea:focus{border-color:var(--brass);outline:none;}
.form-note{font-size:12px;color:var(--paper-dim);text-align:center;opacity:.8;}

.map-wrap{height:340px;width:100%;border-top:1px solid var(--line);filter:grayscale(.3) contrast(1.05);}

/* ===== Footer ===== */
.site-footer{background:var(--surface);border-top:1px solid var(--line);}
.footer-inner{
  max-width:var(--maxw);margin:0 auto;
  padding:48px 24px;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:32px;
}
.footer-brand p{color:var(--paper-dim);font-size:13.5px;margin-top:10px;max-width:300px;}
.footer-links{display:flex;gap:22px;flex-wrap:wrap;align-items:flex-start;}
.footer-links a{font-size:14px;color:var(--paper-dim);}
.footer-links a:hover{color:var(--paper);}
.footer-contact{display:flex;flex-direction:column;gap:8px;align-items:flex-start;}
.footer-contact a{font-size:14px;color:var(--paper-dim);}
.footer-contact a:hover{color:var(--brass);}
.footer-bottom{
  border-top:1px solid var(--line);
  text-align:center;padding:18px 24px;
  font-size:12.5px;color:var(--paper-dim);
  font-family:var(--mono);
}

/* ===== Floating WhatsApp ===== */
.whatsapp-float{
  position:fixed;bottom:24px;right:24px;z-index:60;
  width:58px;height:58px;border-radius:50%;
  background:var(--whatsapp);color:#08210f;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 24px rgba(0,0,0,.35);
  transition:transform .2s ease;
}
.whatsapp-float:hover{transform:scale(1.08);}

/* ===========================================================
   Responsive
=========================================================== */
@media (max-width:980px){
  .main-nav{display:none;}
  .nav-toggle{display:flex;}
  .about-grid{grid-template-columns:1fr;gap:40px;}
  .product-grid{grid-template-columns:repeat(2,1fr);}
  .why-grid{grid-template-columns:repeat(2,1fr);}
  .contact-grid{grid-template-columns:1fr;}
  .hero-schematic{opacity:.18;width:480px;height:480px;}
}

@media (max-width:640px){
  .section{padding:64px 18px;}
  .header-inner{padding:12px 16px;}
  .btn-call{display:none;}
  .product-grid{grid-template-columns:1fr;}
  .why-grid{grid-template-columns:1fr;}
  .hero{padding:96px 18px 64px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-stats{gap:28px;}
  .products-cta{flex-direction:column;align-items:flex-start;}
  .brand-tag{display:none;}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  .btn,.contact-card,.whatsapp-float{transition:none;}
}

/* Mobile nav (toggled open state) */
.main-nav.open{
  display:flex;
  position:absolute;top:100%;left:0;right:0;
  flex-direction:column;
  background:var(--charcoal);
  border-bottom:1px solid var(--line);
  padding:18px 24px;
  gap:18px;
}