/* ============================================================
   Septic System Calculator
   Visual language taken from the trade: utility navy, equipment
   orange, and Barlow — a face drawn from California public
   signage. Meant to read like a contractor's tool.
   ============================================================ */

:root{
  --navy:    #102A42;
  --navy-2:  #1C4067;
  --navy-lo: #EAF0F6;
  --orange:  #DE5A0C;
  --orange-d:#B4470A;
  --orange-lo:#FDF1E8;
  --ink:     #17242F;
  --gray:    #5A6B78;
  --gray-lo: #8A9AA6;
  --line:    #D9E1E7;
  --bg:      #F3F6F8;
  --white:   #FFFFFF;

  --shell: 1140px;
  --gut: clamp(18px, 4vw, 36px);
  --r: 4px;

  --display: "Barlow Semi Condensed", "Barlow", Arial, sans-serif;
  --body: "Barlow", system-ui, -apple-system, Arial, sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--body);font-size:17px;line-height:1.62;
}
img,svg{max-width:100%;display:block}
a{color:var(--navy-2)}
h1,h2,h3,h4{font-family:var(--display);font-weight:700;line-height:1.03;margin:0}
h1{font-size:clamp(40px,6.4vw,72px);letter-spacing:-.01em}
h2{font-size:clamp(29px,3.6vw,44px);letter-spacing:-.005em}
h3{font-size:clamp(20px,2.1vw,25px)}
p{margin:0 0 1em}
:focus-visible{outline:3px solid var(--orange);outline-offset:2px}

.shell{max-width:var(--shell);margin:0 auto;padding:0 var(--gut)}
.narrow{max-width:780px}

/* ---------- trade-style label ---------- */
.eyebrow{
  display:inline-block;background:var(--navy);color:#fff;
  font-family:var(--display);font-weight:600;font-size:12.5px;
  letter-spacing:.09em;text-transform:uppercase;
  padding:5px 11px;border-radius:2px;margin:0 0 16px;
}
.eyebrow.o{background:var(--orange)}

/* ---------- utility bar + header ---------- */
.util{background:var(--navy);color:#B6C6D4;font-size:13.5px;padding:7px 0;font-weight:500}
.util .shell{display:flex;gap:22px;align-items:center;flex-wrap:wrap}
.util b{color:#fff;font-weight:600}
.util span{display:flex;align-items:center;gap:7px}
.util span::before{content:"";width:6px;height:6px;background:var(--orange);border-radius:50%;flex:none}
@media(max-width:700px){.util span:nth-child(n+3){display:none}}

.masthead{position:sticky;top:0;z-index:50;background:var(--white);border-bottom:2px solid var(--navy)}
.masthead .shell{display:flex;align-items:center;gap:20px;height:72px}
.brand{
  font-family:var(--display);font-weight:700;font-size:21px;letter-spacing:-.01em;
  color:var(--navy);text-decoration:none;display:flex;align-items:center;gap:10px;
  flex:none;line-height:1.05;
}
.brand .mk{width:30px;height:30px;background:var(--orange);border-radius:3px;flex:none;position:relative}
.brand .mk::after{
  content:"";position:absolute;left:6px;right:6px;top:10px;height:3px;
  background:#fff;box-shadow:0 6px 0 #fff;
}
.nav{margin-left:auto;display:flex;gap:24px;align-items:center}
.nav a{
  color:var(--ink);text-decoration:none;font-size:15.5px;font-weight:600;
  font-family:var(--display);letter-spacing:.01em;
}
.nav a:hover{color:var(--orange)}

/* hamburger button — hidden on desktop */
.navtoggle{
  display:none;margin-left:auto;flex-direction:column;justify-content:center;gap:5px;
  width:46px;height:40px;padding:0 10px;background:var(--navy);border:0;border-radius:var(--r);cursor:pointer;
}
.navtoggle span{display:block;height:3px;background:#fff;border-radius:2px;transition:.2s}
.navtoggle.open span:nth-child(1){transform:translateY(8px) rotate(45deg)}
.navtoggle.open span:nth-child(2){opacity:0}
.navtoggle.open span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}

@media(max-width:880px){
  .masthead .shell{height:64px}
  .brand{font-size:18px}
  .navtoggle{display:flex}
  /* mobile: nav becomes a dropdown panel, hidden until toggled */
  .nav{
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--white);border-bottom:2px solid var(--navy);
    padding:8px 0;margin:0;display:none;
    box-shadow:0 10px 24px rgba(16,42,66,.12);
  }
  .nav.open{display:flex}
  .nav a{padding:14px 24px;font-size:18px;border-bottom:1px solid var(--line)}
  .nav a:last-child{border-bottom:0}
  .nav .btn{margin:10px 24px 6px;padding:14px}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  background:var(--orange);color:#fff;text-decoration:none;
  font-family:var(--display);font-weight:700;font-size:17px;
  letter-spacing:.01em;text-transform:uppercase;
  padding:14px 26px;border:0;border-radius:var(--r);cursor:pointer;
  box-shadow:0 2px 0 var(--orange-d);
  transition:background .12s,box-shadow .12s,transform .12s;
}
.btn:hover{background:var(--orange-d);box-shadow:0 2px 0 #8c3707;transform:translateY(1px)}
.btn.ghost{background:var(--white);color:var(--navy);border:2px solid var(--line);box-shadow:none}
.btn.ghost:hover{background:var(--navy-lo);border-color:var(--navy);color:var(--navy);transform:none}
.btn.navy{background:var(--navy);box-shadow:0 2px 0 #0a1c2c}
.btn.navy:hover{background:var(--navy-2);box-shadow:0 2px 0 #0a1c2c}
.nav .btn{font-size:15px;padding:11px 18px}

/* ---------- hero ---------- */
.hero{background:var(--white);border-bottom:1px solid var(--line);padding:clamp(38px,6vw,68px) 0 clamp(34px,5vw,56px)}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:clamp(26px,4.5vw,56px);align-items:center}
@media(max-width:900px){.hero-grid{grid-template-columns:1fr;gap:30px}}
.hero h1 span{color:var(--orange)}
.lede{font-size:clamp(17.5px,1.7vw,20px);color:var(--gray);max-width:50ch}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.trust{
  display:flex;flex-wrap:wrap;gap:26px;margin-top:26px;padding-top:20px;
  border-top:1px solid var(--line);font-size:14.5px;color:var(--gray);font-weight:500;
}
.trust b{display:block;font-family:var(--display);font-size:24px;font-weight:700;color:var(--navy);line-height:1.1}

.profile{background:var(--white);border:2px solid var(--line);border-radius:var(--r);padding:12px}
.profile figcaption{
  font-family:var(--display);font-size:12.5px;font-weight:600;letter-spacing:.06em;
  text-transform:uppercase;color:var(--gray-lo);display:flex;justify-content:space-between;margin-top:9px;
}

/* ---------- sections ---------- */
.band{padding:clamp(46px,6vw,76px) 0}
.band.white{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.band.navy{background:var(--navy);color:#C8D6E2}
.band.navy h2,.band.navy h3{color:#fff}
.band.navy a{color:#F5A76B}
.band-head{max-width:660px;margin-bottom:32px}
.band-head p{color:var(--gray);margin-top:12px;margin-bottom:0}
.band.navy .band-head p{color:#9DB2C4}

/* ---------- cards ---------- */
.grid{display:grid;gap:14px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
@media(max-width:900px){.g3,.g4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.g2,.g3,.g4{grid-template-columns:1fr}}

.card{
  background:var(--white);border:1px solid var(--line);border-top:4px solid var(--navy);
  border-radius:var(--r);padding:22px 20px;text-decoration:none;color:inherit;display:block;
  transition:border-top-color .12s,transform .12s,box-shadow .12s;
}
a.card:hover{border-top-color:var(--orange);transform:translateY(-3px);box-shadow:0 6px 18px rgba(16,42,66,.09)}
.card .kicker{
  font-family:var(--display);font-size:12.5px;font-weight:700;letter-spacing:.08em;
  text-transform:uppercase;color:var(--orange);margin-bottom:9px;
}
.card h3{margin-bottom:7px;color:var(--navy)}
.card p{color:var(--gray);font-size:15.5px;margin:0}
.band.navy .card{background:var(--navy-2);border-color:#2A5480;border-top-color:var(--orange)}
.band.navy .card h3{color:#fff}
.band.navy .card p{color:#A8BECF}

/* ---------- the tool ---------- */
.tool{background:var(--white);border:2px solid var(--navy);border-radius:var(--r);overflow:hidden;box-shadow:0 4px 0 rgba(16,42,66,.10)}
.tool-head{background:var(--navy);color:#fff;padding:15px 22px;display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap}
.tool-head strong{font-family:var(--display);font-size:20px;font-weight:700;letter-spacing:.01em}
.tool-head span{font-family:var(--display);font-size:12.5px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:#8FA9C0}
.tool-body{padding:24px 22px}
.field{margin-bottom:19px}
.field label{display:block;font-family:var(--display);font-weight:600;font-size:16px;margin-bottom:7px;color:var(--navy)}
.field .hint{font-size:14px;color:var(--gray);margin:6px 0 0}
select,input[type=number],input[type=text],input[type=email],input[type=tel]{
  width:100%;font-family:var(--body);font-size:16.5px;color:var(--ink);
  padding:12px 13px;border:2px solid var(--line);border-radius:var(--r);
  background:var(--white);appearance:none;font-weight:500;
}
select:hover,input:hover{border-color:var(--gray-lo)}
select:focus,input:focus{border-color:var(--navy)}
.stepper{display:flex;max-width:200px}
.stepper button{
  width:48px;border:2px solid var(--line);background:var(--navy-lo);
  font-size:22px;line-height:1;cursor:pointer;color:var(--navy);font-weight:600;
}
.stepper button:first-child{border-radius:var(--r) 0 0 var(--r)}
.stepper button:last-child{border-radius:0 var(--r) var(--r) 0}
.stepper button:hover{background:var(--navy);color:#fff;border-color:var(--navy)}
.stepper input{border-radius:0;border-left:0;border-right:0;text-align:center;font-weight:700;font-size:19px}
.row{display:grid;grid-template-columns:1fr 1fr;gap:15px}
@media(max-width:560px){.row{grid-template-columns:1fr}}
.err{color:#fff;background:#B4290F;font-size:15px;font-weight:600;margin:0 0 16px;padding:11px 14px;border-radius:var(--r);display:none}
.err.on{display:block}

/* ---------- result ---------- */
.spec{display:none;border-top:2px solid var(--navy);background:var(--navy-lo)}
.spec.on{display:block}
.spec-inner{padding:24px 22px}
.spec-top{margin-bottom:20px}
.figure{font-family:var(--display);font-size:clamp(46px,8.5vw,74px);font-weight:700;line-height:.92;letter-spacing:-.015em;color:var(--navy)}
.figure small{font-size:.27em;font-weight:600;letter-spacing:.02em;color:var(--gray);display:block;margin-top:9px;font-family:var(--body);text-transform:none}
.spec-list{border-top:2px solid #C2D2E0}
.spec-list div{display:flex;justify-content:space-between;gap:16px;padding:11px 0;border-bottom:1px solid #C2D2E0;font-size:15.5px}
.spec-list span:first-child{color:var(--gray)}
.spec-list b{font-family:var(--display);font-weight:700;font-size:17px;color:var(--navy);text-align:right;font-variant-numeric:tabular-nums}
.note{font-size:15px;color:var(--ink);background:var(--white);border-left:5px solid var(--orange);padding:14px 16px;margin-top:20px}

/* ---------- lead capture ---------- */
.quote{background:var(--navy);color:#C8D6E2;padding:26px 22px}
.quote h3{color:#fff;margin-bottom:6px;font-size:26px}
.quote p{color:#9DB2C4;font-size:15.5px}
.quote .row{margin-bottom:14px}
.quote input{background:#fff;border-color:#2A5480;color:var(--ink)}
.quote input::placeholder{color:#8A9AA6}
.quote .btn{width:100%}
.quote .fine{font-size:13px;color:#7E96AB;margin:13px 0 0;text-align:center}

/* ---------- tables ---------- */
.tbl{width:100%;border-collapse:collapse;font-size:15.5px;background:var(--white)}
.tbl th,.tbl td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line)}
.tbl th{font-family:var(--display);font-size:14px;letter-spacing:.05em;text-transform:uppercase;color:#fff;background:var(--navy);font-weight:600;border-bottom:0}
.tbl td b{font-family:var(--display);font-weight:700;font-size:16.5px;color:var(--navy);font-variant-numeric:tabular-nums}
.tbl tr:nth-child(even) td{background:#FAFCFD}
.tbl tr:hover td{background:var(--orange-lo)}
.scroll{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r)}

/* ---------- state chips ---------- */
.chips{display:grid;grid-template-columns:repeat(auto-fill,minmax(152px,1fr));gap:7px}
.chip{
  display:flex;justify-content:space-between;align-items:center;gap:8px;
  background:var(--white);border:1px solid var(--line);border-left:4px solid var(--navy);
  border-radius:var(--r);padding:10px 12px;text-decoration:none;color:var(--ink);font-size:15px;font-weight:500;
}
.chip b{font-family:var(--display);font-size:13px;font-weight:700;color:var(--gray-lo);letter-spacing:.05em}
.chip:hover{border-left-color:var(--orange);color:var(--orange);background:var(--orange-lo)}
.chip:hover b{color:var(--orange)}

/* ---------- prose ---------- */
.prose{max-width:72ch}
.prose h2{margin:42px 0 14px;color:var(--navy)}
.prose h3{margin:30px 0 10px;color:var(--navy)}
.prose ul,.prose ol{padding-left:22px;margin:0 0 1em}
.prose li{margin-bottom:8px}
.prose .tbl{margin-bottom:1.4em}
.prose a{color:var(--orange-d);font-weight:600}

/* ---------- FAQ ---------- */
details.faq{background:var(--white);border:1px solid var(--line);border-radius:var(--r);margin-bottom:8px}
details.faq summary{
  padding:16px 20px;cursor:pointer;font-family:var(--display);font-weight:600;font-size:19px;
  color:var(--navy);list-style:none;display:flex;justify-content:space-between;gap:14px;align-items:center;
}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{
  content:"+";color:#fff;background:var(--orange);width:24px;height:24px;border-radius:2px;
  display:flex;align-items:center;justify-content:center;font-size:19px;line-height:1;flex:none;
}
details.faq[open] summary::after{content:"\2212"}
details.faq[open] summary{border-bottom:1px solid var(--line)}
details.faq .body{padding:16px 20px;color:var(--ink);font-size:16px}

/* ---------- footer ---------- */
.foot{background:var(--navy);color:#9DB2C4;padding:52px 0 28px;font-size:15px}
.foot a{color:#D3DFE9;text-decoration:none}
.foot a:hover{color:#F5A76B;text-decoration:underline}
.foot h4{font-family:var(--display);font-size:14px;letter-spacing:.07em;text-transform:uppercase;color:#fff;margin:0 0 14px;font-weight:600}
.foot ul{list-style:none;padding:0;margin:0}
.foot li{margin-bottom:8px}
.foot .brand{color:#fff}
.foot .disc{border-top:1px solid #24486E;margin-top:38px;padding-top:22px;font-size:13.5px;color:#7E96AB}
.crumb{font-family:var(--display);font-size:14px;font-weight:500;letter-spacing:.02em;color:var(--gray);padding:16px 0 0}
.crumb a{color:var(--gray);text-decoration:none}
.crumb a:hover{color:var(--orange)}

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

/* ---------- PDF / print export ---------- */
.printbar{margin-top:18px}
.print-brand{display:none;font-family:var(--display);font-weight:600;font-size:13px;
  color:var(--gray);border-bottom:2px solid var(--navy);padding-bottom:8px;margin-bottom:16px}
@media print{
  body *{visibility:hidden}
  .print-target,.print-target *{visibility:visible}
  .print-target{position:absolute;top:0;left:0;width:100%;border:none;box-shadow:none}
  .print-target .tool-body,.print-target .quote,.print-target .printbar,.print-target .err{display:none}
  .print-target .spec{background:#fff;border:none}
  .print-brand{display:block}
  .figure{color:#000}
  .note{border-left-color:#000}
}