/* ==========================================================================
   Gold Star Refrigeration — Design Tokens
   Palette fixed by brief: Industrial Blue, Frost Cyan, White, CTA Orange
   Type: Space Grotesk (display/technical headlines) + Inter (body)
         + IBM Plex Mono (spec data only — reads like a spec sheet)
   ========================================================================== */

:root{
  --navy: #0A2540;
  --navy-deep: #071A2E;
  --cyan: #00D4FF;
  --cyan-dim: #7FE6FF;
  --white: #FFFFFF;
  --orange: #FF6B00;
  --orange-deep: #E05A00;
  --ink: #10202E;
  --ink-soft: #46586A;
  --paper: #F3F6F9;
  --paper-deep: #E7EDF2;
  --line: #D7E1E8;

  --font-display: 'Space Grotesk', 'Arial Narrow', sans-serif;
  --font-body: 'Inter', -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', 'Courier New', monospace;

  --max: 1180px;
  --radius: 3px;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--white);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
img{ max-width:100%; display:block; }
a{ color: inherit; }
h1,h2,h3{ font-family: var(--font-display); margin:0; line-height:1.1; letter-spacing: -0.01em; }
p{ margin:0; }
.wrap{ max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.mono{ font-family: var(--font-mono); }

/* Focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible{
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce){
  *{ animation: none !important; transition: none !important; }
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; gap:8px;
  font-family: var(--font-body); font-weight:600; font-size: 15px;
  padding: 13px 24px; border-radius: var(--radius);
  border: 1px solid transparent; cursor:pointer; text-decoration:none;
  transition: transform .15s ease, background .15s ease, border-color .15s ease;
}
.btn:hover{ transform: translateY(-1px); }
.btn-primary{ background: var(--orange); color: var(--white); }
.btn-primary:hover{ background: var(--orange-deep); }
.btn-ghost{ background: transparent; color: var(--white); border-color: rgba(255,255,255,.45); }
.btn-ghost:hover{ border-color: var(--cyan); color: var(--cyan-dim); }
.btn-ghost.on-light{ color: var(--navy); border-color: var(--navy); }
.btn-ghost.on-light:hover{ border-color: var(--cyan); color: var(--navy); background: rgba(0,212,255,.08); }

/* ---------- Top utility bar ---------- */
.util-bar{
  background: var(--navy-deep); color: rgba(255,255,255,.85);
  font-size: 13px; padding: 7px 0;
}
.util-bar .wrap{ display:flex; justify-content:space-between; align-items:center; gap:12px; flex-wrap:wrap; }
.util-bar a{ text-decoration:none; color: inherit; }
.util-bar a:hover{ color: var(--cyan-dim); }
.util-bar .sep{ opacity:.4; margin: 0 8px; }

/* ---------- Header / nav ---------- */
header.site-header{
  position: sticky; top:0; z-index: 50;
  background: var(--navy); border-bottom: 1px solid rgba(255,255,255,.08);
}
.nav-row{ display:flex; align-items:center; justify-content:space-between; padding: 14px 0; gap: 20px; }
.brand{ display:flex; align-items:center; gap:10px; text-decoration:none; }
.brand-mark{
  width:34px; height:34px; border-radius:50%;
  background: conic-gradient(from 210deg, var(--cyan), var(--orange), var(--cyan));
  display:flex; align-items:center; justify-content:center;
  color: var(--navy); font-family: var(--font-display); font-weight:700; font-size:15px;
}
.brand-text{ color: var(--white); font-family: var(--font-display); font-weight:700; font-size: 19px; letter-spacing: -.01em; }
.brand-text small{ display:block; font-family: var(--font-body); font-weight:400; font-size:11px; color: var(--cyan-dim); letter-spacing: .02em; }

nav.main-nav{ display:flex; gap: 26px; }
nav.main-nav a{ color: rgba(255,255,255,.82); text-decoration:none; font-size: 14.5px; font-weight:500; }
nav.main-nav a:hover{ color: var(--cyan); }

.nav-cta{ display:flex; align-items:center; gap:14px; }
.nav-phone{ color: var(--white); text-decoration:none; font-size:14px; font-weight:600; display:none; }
.nav-phone span{ color: var(--cyan-dim); }

.nav-toggle{ display:none; background:none; border:none; color:var(--white); font-size:26px; cursor:pointer; }

@media (max-width: 900px){
  nav.main-nav{
    position:absolute; top:100%; left:0; right:0; background: var(--navy);
    flex-direction:column; padding: 10px 24px 20px; gap: 4px;
    border-bottom: 1px solid rgba(255,255,255,.08);
    display:none;
  }
  nav.main-nav.open{ display:flex; }
  nav.main-nav a{ padding: 10px 0; border-bottom: 1px solid rgba(255,255,255,.06); }
  .nav-toggle{ display:block; }
  .nav-cta .btn-primary{ display: none;}
}
@media (min-width: 700px){ .nav-phone{ display:inline; } }

/* ---------- Section rhythm ---------- */
section{ padding: 76px 0; }
.section-head{ max-width: 640px; margin-bottom: 40px; }
.section-head h2{ font-size: clamp(26px,3.4vw,36px); color: var(--navy); }
.section-head p{ margin-top:12px; color: var(--ink-soft); font-size: 16px; }
.on-navy .section-head h2{ color: var(--white); }
.on-navy .section-head p{ color: rgba(255,255,255,.72); }
.bg-paper{ background: var(--paper); }
.bg-navy{ background: var(--navy); color: var(--white); }

/* ---------- Hero ---------- */
.hero{
  position:relative; background: var(--navy); color: var(--white); overflow:hidden;
  padding: 0;
}
.hero-grid{
  max-width: var(--max); margin:0 auto; padding: 68px 24px 0;
  display:grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items:center;
}
.hero-copy h1{ font-size: clamp(32px, 4.4vw, 50px); color: var(--white); }
.hero-copy .lede{ margin-top:18px; font-size: 18px; color: rgba(255,255,255,.78); max-width: 46ch; }
.hero-actions{ margin-top: 30px; display:flex; gap: 14px; flex-wrap:wrap; }

.hero-art{ position:relative; }
.hero-art .frost-panel{
  position:relative; aspect-ratio: 4/3; border-radius: 4px;
  background:
    linear-gradient(135deg, rgba(0,212,255,.16), rgba(0,212,255,0) 60%),
    var(--navy-deep);
  border: 1px solid rgba(0,212,255,.28);
  clip-path: polygon(0 6%, 100% 0, 100% 100%, 0% 94%);
  display:flex; align-items:center; justify-content:center;
}
.hero-art .frost-panel svg{ width: 78%; height:auto; }

.trust-strip{
  margin-top: 54px; border-top: 1px solid rgba(255,255,255,.12);
  background: var(--navy-deep);
}
.trust-grid{
  max-width: var(--max); margin:0 auto; padding: 22px 24px;
  display:grid; grid-template-columns: repeat(4,1fr); gap: 18px;
}
.trust-item .num{ font-family: var(--font-mono); color: var(--cyan); font-size: 21px; font-weight:600; }
.trust-item .label{ margin-top:4px; font-size: 13px; color: rgba(255,255,255,.68); }
@media (max-width: 900px){
  .hero-grid{ grid-template-columns: 1fr; padding-top: 40px; }
  .trust-grid{ grid-template-columns: repeat(2,1fr); }
}

/* ---------- Product grid (Section 2) ---------- */
.product-grid{ display:grid; grid-template-columns: repeat(2,1fr); gap: 22px; }
.product-card{
  border: 1px solid var(--line); border-radius: var(--radius); background: var(--white);
  padding: 26px; transition: border-color .15s ease, box-shadow .15s ease;
}
.product-card:hover{ border-color: var(--cyan); box-shadow: 0 10px 26px rgba(10,37,64,.08); }
.product-card h3{ font-size: 20px; color: var(--navy); margin-bottom:8px; }
.product-card .tag{
  display:inline-block; font-family: var(--font-mono); font-size: 11.5px; color: var(--orange);
  background: rgba(255,107,0,.08); padding: 3px 8px; border-radius: 2px; margin-bottom: 14px;
}
.product-card ul{ margin: 0 0 18px; padding-left: 18px; color: var(--ink-soft); font-size: 14.5px; }
.product-card li{ margin-bottom: 6px; }
.product-card a.cta{ font-weight:600; font-size:14.5px; color: var(--navy); text-decoration:none; border-bottom: 1px solid var(--cyan); padding-bottom:2px; }
.product-card a.cta:hover{ color: var(--orange); border-color: var(--orange); }
@media (max-width: 760px){ .product-grid{ grid-template-columns: 1fr; } }

/* ---------- Industry finder (Section 3) ---------- */
.finder-pills{ display:flex; flex-wrap:wrap; gap:10px; margin-bottom: 26px; }
.pill{
  font-family: var(--font-body); font-size: 14px; font-weight:600; color: var(--navy);
  background: var(--white); border: 1px solid var(--line); border-radius: 999px;
  padding: 9px 18px; cursor:pointer;
}
.pill.active, .pill:hover{ border-color: var(--cyan); background: rgba(0,212,255,.08); }
.finder-result{
  border: 1px solid var(--line); background: var(--white); border-radius: var(--radius);
  padding: 24px; display:flex; gap: 22px; flex-wrap:wrap; align-items:center; justify-content:space-between;
}
.finder-result p{ color: var(--ink-soft); max-width: 56ch; }
.finder-result .links{ display:flex; gap: 14px; flex-wrap:wrap; }
.finder-result .links a{ font-weight:600; font-size: 14.5px; color: var(--navy); text-decoration:none; border-bottom:1px solid var(--cyan); }

/* ---------- Technical advantages (Section 4) ---------- */
.tech-grid{ display:grid; grid-template-columns: repeat(2,1fr); gap: 28px 36px; }
.tech-item{ display:flex; gap:16px; }
.tech-item .ic{
  flex:none; width:40px; height:40px; border-radius:50%;
  background: rgba(0,212,255,.12); color: var(--cyan);
  display:flex; align-items:center; justify-content:center; font-family: var(--font-mono); font-weight:600;
}
.tech-item h3{ font-size:16.5px; color: var(--navy); margin-bottom:6px; }
.tech-item p{ color: var(--ink-soft); font-size: 14.5px; }
@media (max-width: 760px){ .tech-grid{ grid-template-columns: 1fr; } }

/* ---------- Process timeline (Section 5) ---------- */
.process-row{ display:grid; grid-template-columns: repeat(5,1fr); gap: 0; position:relative; }
.process-row::before{
  content:''; position:absolute; top:19px; left:8%; right:8%; height:1px; background: var(--line);
}
.process-step{ position:relative; padding: 0 14px; text-align:left; }
.process-step .node{
  width:38px; height:38px; border-radius:50%; background: var(--navy); color: var(--cyan);
  display:flex; align-items:center; justify-content:center; font-family: var(--font-mono); font-weight:600;
  position:relative; z-index:1; margin-bottom: 16px;
}
.process-step h3{ font-size:15.5px; color: var(--navy); margin-bottom:6px; }
.process-step p{ font-size: 13.8px; color: var(--ink-soft); }
@media (max-width: 900px){
  .process-row{ grid-template-columns: 1fr; gap: 26px; }
  .process-row::before{ display:none; }
}

/* ---------- Testimonials (Section 6) ---------- */
.proof-grid{ display:grid; grid-template-columns: repeat(3,1fr); gap: 22px; }
.proof-card{ border:1px solid var(--line); border-radius: var(--radius); padding: 24px; background: var(--white); }
.proof-card .stat{ font-family: var(--font-mono); color: var(--orange); font-size: 22px; font-weight:600; }
.proof-card .quote{ margin-top:12px; color: var(--ink-soft); font-size: 14.5px; font-style: italic; }
.proof-card .meta{ margin-top:14px; font-size: 13px; color: var(--ink-soft); border-top:1px solid var(--line); padding-top:12px; }
@media (max-width: 900px){ .proof-grid{ grid-template-columns: 1fr; } }

/* ---------- FAQ (Section 7) ---------- */
.faq-list{ border-top: 1px solid var(--line); }
.faq-item{ border-bottom: 1px solid var(--line); }
.faq-item summary{
  cursor:pointer; list-style:none; padding: 20px 0; font-family: var(--font-display);
  font-weight:600; font-size: 16.5px; color: var(--navy); display:flex; justify-content:space-between; gap: 16px;
}
.faq-item summary::-webkit-details-marker{ display:none; }
.faq-item summary::after{ content:'+'; color: var(--orange); font-size:22px; flex:none; }
.faq-item[open] summary::after{ content:'–'; }
.faq-item .a{ padding: 0 0 22px; color: var(--ink-soft); max-width: 68ch; font-size: 15px; }

/* ---------- Certifications (Section 8) ---------- */
.badge-row{ display:flex; flex-wrap:wrap; gap: 16px; }
.badge{
  border: 1px dashed var(--line); border-radius: var(--radius); padding: 18px 22px;
  font-family: var(--font-mono); font-size: 13px; color: var(--ink-soft); background: var(--paper);
  min-width: 180px; text-align:center;
}

/* ---------- RFQ form (Section 9) ---------- */
.rfq-grid{ display:grid; grid-template-columns: .9fr 1.1fr; gap: 48px; align-items:start; }
.rfq-copy h2{ font-size: clamp(24px,3vw,32px); color: var(--white); }
.rfq-copy p{ margin-top:14px; color: rgba(255,255,255,.72); max-width: 42ch; }
.rfq-contact{ margin-top: 26px; font-size: 15px; }
.rfq-contact a{ color: var(--cyan-dim); text-decoration:none; font-weight:600; }
.rfq-form{ background: var(--white); border-radius: 4px; padding: 30px; }
.field{ margin-bottom: 16px; }
.field label{ display:block; font-size: 13.5px; font-weight:600; color: var(--navy); margin-bottom:6px; }
.field input, .field select{
  width:100%; padding: 11px 13px; border: 1px solid var(--line); border-radius: 3px;
  font-family: var(--font-body); font-size: 14.5px; color: var(--ink); background: var(--white);
}
.field input:focus, .field select:focus{ border-color: var(--cyan); }
.field-row{ display:grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.rfq-form .btn-primary{ width:100%; justify-content:center; margin-top:6px; }
@media (max-width: 900px){ .rfq-grid{ grid-template-columns: 1fr; } .field-row{ grid-template-columns:1fr; } }

/* ---------- Footer ---------- */
footer.site-footer{ background: var(--navy-deep); color: rgba(255,255,255,.72); padding: 56px 0 0; }
.footer-grid{ display:grid; grid-template-columns: 1.3fr repeat(3,1fr); gap: 32px; padding-bottom: 40px; }
.footer-grid h4{ color: var(--white); font-family: var(--font-display); font-size: 14.5px; margin-bottom: 14px; }
.footer-grid ul{ list-style:none; margin:0; padding:0; }
.footer-grid li{ margin-bottom: 9px; font-size: 14px; }
.footer-grid a{ color: rgba(255,255,255,.68); text-decoration:none; }
.footer-grid a:hover{ color: var(--cyan); }
.footer-brand p{ font-size: 14px; margin-top: 10px; max-width: 34ch; color: rgba(255,255,255,.6); }
.footer-bottom{
  border-top: 1px solid rgba(255,255,255,.1); padding: 18px 0; font-size: 12.5px;
  color: rgba(255,255,255,.5); display:flex; justify-content:space-between; flex-wrap:wrap; gap:8px;
}
@media (max-width: 900px){ .footer-grid{ grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px){ .footer-grid{ grid-template-columns: 1fr; } }

/* ---------- Sticky mobile CTA ---------- */
.mobile-cta{
  position: fixed; left:0; right:0; bottom:0; z-index: 60;
  background: var(--navy); border-top: 1px solid rgba(255,255,255,.12);
  padding: 10px 16px; display:none; gap: 10px;
}
.mobile-cta a{ flex:1; text-align:center; }
@media (max-width: 700px){ .mobile-cta{ display:flex; } body{ padding-bottom: 66px; } .util-bar{
  display: none;
}}