/* ============================================
   ATL FIREWATCH — design tokens (v3)
   Concept: daylight jobsite, true-red accent
   matched to the logo mark. White ground, one
   confident red, a deep blue for compliance
   and trust content.
   ============================================ */

:root{
  --ink:        #1A1A1A;
  --ink-dim:    #52565C;
  --ink-faint:  #767B81;
  --ground:     #FFFFFF;
  --panel:      #F7F5F2;
  --panel-line: #E4E0DA;
  --flame:      #C41E14;
  --flame-dark: #9B160E;
  --flame-tint: #FBDCD9;
  --trust:      #1E4A66;
  --trust-tint: #E4EDF1;
  --danger:     #B3211A;

  --font-head: "Barlow Condensed", "Arial Narrow", sans-serif;
  --font-body: "Inter", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Menlo, monospace;

  --max: 1120px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ground);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px;}

h1,h2,h3,h4{
  font-family:var(--font-head);
  font-weight:600;
  letter-spacing:0.2px;
  margin:0 0 0.5em;
  color:var(--ink);
}
h1{font-size:clamp(2.6rem,6vw,4.6rem);line-height:0.98;font-weight:650;}
h2{font-size:clamp(1.7rem,3.4vw,2.4rem);line-height:1.08;}
h3{font-size:1.3rem;line-height:1.2;}
p{margin:0 0 1em;max-width:62ch;color:var(--ink-dim);}
p.lede{font-size:1.15rem;color:var(--ink);max-width:52ch;}

code, .mono{font-family:var(--font-mono);}

/* ---------- nav ---------- */
header.site{
  border-bottom:1px solid var(--panel-line);
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,0.94);
  backdrop-filter:blur(6px);
}
.nav-row{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 24px;max-width:var(--max);margin:0 auto;
}
.brand{
  font-family:var(--font-head);font-weight:650;font-size:1.15rem;
  color:var(--ink);text-decoration:none;display:flex;align-items:center;gap:9px;
}
.brand .mark{
  width:32px;height:32px;flex:none;
}
nav.links{display:flex;gap:26px;align-items:center;}
nav.links a{
  text-decoration:none;color:var(--ink-dim);font-size:0.95rem;
  transition:color .15s ease;
}
nav.links a:hover{color:var(--ink);}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--flame);color:#fff;
  padding:11px 20px;border-radius:3px;
  font-weight:600;font-size:0.95rem;text-decoration:none;
  transition:background .15s ease;
}
.btn:hover{background:var(--flame-dark);}
/* nav.links a (0,1,1) outranks .btn (0,1,0), so the nav CTA needs to
   restate its own colour or it inherits the dim link grey */
nav.links a.btn{color:#fff;}
.btn.ghost{
  background:transparent;color:var(--ink);
  border:1px solid var(--panel-line);
}
.btn.ghost:hover{border-color:var(--trust);color:var(--trust);}
.mobile-toggle{display:none;}

/* ---------- hero ---------- */
.hero{
  padding:88px 0 64px;
  border-bottom:1px solid var(--panel-line);
  position:relative;overflow:hidden;
  background:linear-gradient(180deg, var(--panel) 0%, #ffffff 100%);
}
.eyebrow-line{
  display:flex;align-items:center;gap:10px;margin-bottom:18px;
  color:var(--flame-dark);font-size:0.92rem;font-family:var(--font-mono);
}
.eyebrow-line .rule{width:28px;height:1px;background:var(--flame);}
.hero-actions{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap;}

/* ---------- sections ---------- */
section{padding:64px 0;border-bottom:1px solid var(--panel-line);}
section.tight{padding:48px 0;}
.section-head{max-width:640px;margin-bottom:36px;}
.kicker{
  font-family:var(--font-mono);font-size:0.85rem;color:var(--trust);
  display:block;margin-bottom:10px;
}

.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--panel-line);border:1px solid var(--panel-line);}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--panel-line);border:1px solid var(--panel-line);}
.cell{background:#fff;padding:28px;}
.cell h3{margin-bottom:10px;}
.cell p{margin-bottom:0;font-size:0.96rem;}

/* trigger table — real data, hairlines used functionally */
table.triggers{width:100%;border-collapse:collapse;font-size:0.95rem;}
table.triggers th{
  text-align:left;font-family:var(--font-mono);font-weight:500;
  color:var(--trust);font-size:0.8rem;padding:10px 16px;
  border-bottom:1px solid var(--panel-line);
}
table.triggers td{
  padding:16px;border-bottom:1px solid var(--panel-line);
  vertical-align:top;color:var(--ink);
}
table.triggers td.threshold{font-family:var(--font-mono);color:var(--flame-dark);white-space:nowrap;}
table.triggers td.code{font-family:var(--font-mono);color:var(--ink-dim);white-space:nowrap;}
table.triggers tr:last-child td{border-bottom:none;}

/* city chip list */
.city-list{display:flex;flex-wrap:wrap;gap:10px;}
.city-list a{
  border:1px solid var(--panel-line);padding:9px 16px;border-radius:3px;
  text-decoration:none;color:var(--ink-dim);font-size:0.92rem;
  transition:border-color .15s ease, color .15s ease;
}
.city-list a:hover{border-color:var(--flame);color:var(--flame-dark);}

/* compliance guide cards */
.guide-card{
  background:#fff;border:1px solid var(--panel-line);
  padding:26px;display:flex;flex-direction:column;gap:8px;
  text-decoration:none;
  transition:border-color .15s ease;
}
.guide-card:hover{border-color:var(--trust);}
.guide-card .tag{
  font-family:var(--font-mono);font-size:0.78rem;color:var(--flame-dark);
}
.guide-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;}

/* faq */
details.faq{
  border-bottom:1px solid var(--panel-line);
  padding:18px 0;
}
details.faq summary{
  cursor:pointer;font-weight:600;color:var(--ink);font-size:1.02rem;
  list-style:none;display:flex;justify-content:space-between;gap:16px;
}
details.faq summary::-webkit-details-marker{display:none;}
details.faq summary::after{
  content:"+";color:var(--flame);font-family:var(--font-mono);flex:none;
}
details.faq[open] summary::after{content:"\2013";}
details.faq .a{padding-top:12px;color:var(--ink-dim);max-width:68ch;}
.faq-group h3{color:var(--trust);font-family:var(--font-mono);font-size:0.85rem;font-weight:500;letter-spacing:0.3px;margin:40px 0 6px;text-transform:none;}
.faq-group:first-of-type h3{margin-top:0;}

/* cta band */
.cta-band{
  background:var(--panel);border-top:1px solid var(--panel-line);
  padding:56px 0;text-align:left;
}
.cta-band .wrap{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap;}

/* footer */
footer.site{padding:48px 0 40px;background:#fff;}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;}
.foot-grid h4{color:var(--ink);font-size:0.85rem;font-family:var(--font-mono);font-weight:500;margin-bottom:14px;}
.foot-grid a{display:block;color:var(--ink-faint);text-decoration:none;font-size:0.92rem;margin-bottom:9px;}
.foot-grid a:hover{color:var(--flame-dark);}
.foot-bottom{
  margin-top:40px;padding-top:24px;border-top:1px solid var(--panel-line);
  display:flex;justify-content:space-between;color:var(--ink-faint);font-size:0.85rem;flex-wrap:wrap;gap:10px;
}

/* breadcrumb */
.crumb{font-family:var(--font-mono);font-size:0.82rem;color:var(--ink-faint);margin-bottom:18px;}
.crumb a{color:var(--ink-faint);text-decoration:none;}
.crumb a:hover{color:var(--flame-dark);}

/* page hero (inner pages, lighter than homepage hero) */
.page-hero{padding:52px 0 40px;border-bottom:1px solid var(--panel-line);background:var(--panel);}
.page-hero p.lede{margin-top:12px;}
.stat-strip{display:flex;gap:28px;flex-wrap:wrap;margin-top:28px;}
.stat{border-left:2px solid var(--flame);padding-left:14px;}
.stat .n{font-family:var(--font-head);font-size:1.6rem;color:var(--ink);display:block;}
.stat .l{font-size:0.82rem;color:var(--ink-faint);}

@media (max-width:860px){
  .grid-3,.grid-2,.guide-list{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr 1fr;}
  nav.links{display:none;}
}