/* ============================================================
   IWA Site Survey Tool — styles
   Reuses the exact Industrial Water Advisory design tokens so the
   page renders natively within industrialwateradvisory.com/tools/
   ============================================================ */
:root{
  --navy:#0d1f3c;--navy-deep:#081429;--navy-mid:#162d52;
  --teal:#0e7c7b;--teal-light:#16a8a7;--teal-pale:#e6f4f4;
  --white:#ffffff;--off-white:#f8f9fb;
  --gray-100:#f1f3f6;--gray-200:#e2e6ed;--gray-400:#9aa5b4;--gray-600:#5a6778;
  --green:#059669;--green-light:#ecfdf5;
  --amber:#d97706;--amber-light:#fffbeb;
  --red:#dc2626;--red-light:#fef2f2;
  --border:#d9e2ec;
  --text:#0d1f3c;--text-primary:#0d1f3c;--text-secondary:#5a6778;--text-muted:#5a7290;--text-light:#9aa5b4;
  --font-display:Georgia,Cambria,'Times New Roman',serif;
  --font-body:system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',Helvetica,Arial,sans-serif;
  --radius:10px;--radius-sm:6px;--radius-lg:12px;
  --shadow-sm:0 1px 3px rgba(13,31,60,.08),0 1px 2px rgba(13,31,60,.04);
  --shadow-md:0 4px 16px rgba(13,31,60,.10),0 2px 6px rgba(13,31,60,.06);
  --shadow-lg:0 12px 40px rgba(13,31,60,.14),0 4px 12px rgba(13,31,60,.08);
  --container:1160px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:130px}
body{font-family:var(--font-body);font-size:1.0625rem;color:var(--text-primary);background:var(--white);line-height:1.65;-webkit-font-smoothing:antialiased}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button{cursor:pointer;font-family:inherit;border:none;background:none}
input,select,textarea{font-family:inherit}
h1,h2,h3,h4{font-family:var(--font-display);color:var(--navy);line-height:1.2;font-weight:600}
.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:clamp(1.25rem,5vw,4rem)}

/* ── Site header (matches IWA nav) ─────────────────────────── */
.site-header{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}
.site-header .container{display:flex;align-items:center;justify-content:space-between;height:68px;gap:1rem}
.brand{display:flex;align-items:center;gap:.6rem;font-family:var(--font-body)}
.brand-mark{width:34px;height:34px;flex:none}
.brand-text{display:flex;flex-direction:column;line-height:1}
.brand-text b{font-size:.82rem;font-weight:800;letter-spacing:.12em;color:var(--navy)}
.brand-text span{font-size:.6rem;font-weight:700;letter-spacing:.28em;color:var(--teal);margin-top:2px}
.site-nav{display:flex;align-items:center;gap:1.4rem}
.site-nav a{font-size:.9rem;font-weight:600;color:var(--text-secondary);transition:color .15s}
.site-nav a:hover,.site-nav a.active{color:var(--teal)}
.nav-cta{background:var(--navy);color:#fff!important;padding:.6rem 1.15rem;border-radius:var(--radius-sm);font-size:.85rem;font-weight:700}
.nav-cta:hover{background:var(--navy-mid)}
.nav-toggle{display:none;font-size:1.5rem;color:var(--navy)}
@media(max-width:900px){.site-nav{display:none}.nav-toggle{display:block}}

/* ── Breadcrumb ────────────────────────────────────────────── */
.breadcrumb-bar{background:var(--off-white);border-bottom:1px solid var(--border);padding:.7rem 0}
.breadcrumb{display:flex;gap:.5rem;font-size:.82rem;color:var(--text-muted);flex-wrap:wrap}
.breadcrumb li:not(:last-child)::after{content:'/';margin-left:.5rem;color:var(--gray-400)}
.breadcrumb a{color:var(--teal);font-weight:600}
.breadcrumb a:hover{text-decoration:underline}

/* ── Hero ──────────────────────────────────────────────────── */
.pillar-intro{background:linear-gradient(160deg,var(--navy-deep),var(--navy-mid));color:#fff;padding:3.5rem 0 3rem;text-align:center}
.pi-eyebrow{display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--teal-light);margin-bottom:1rem}
.pillar-intro h1{color:#fff;font-size:clamp(2rem,1.2rem+2.6vw,3.25rem);margin-bottom:1rem}
.pi-lead{max-width:620px;margin:0 auto;color:rgba(255,255,255,.82);font-size:1.08rem}
.pi-stats{display:flex;justify-content:center;gap:3rem;margin-top:2.2rem;flex-wrap:wrap}
.pi-stat{display:flex;flex-direction:column;align-items:center}
.pi-stat-num{font-family:var(--font-display);font-size:1.9rem;font-weight:700;color:var(--teal-light)}
.pi-stat-label{font-size:.72rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:rgba(255,255,255,.6);margin-top:.3rem}

/* ── Step / progress bar ───────────────────────────────────── */
.stepbar{background:var(--navy);position:sticky;top:68px;z-index:90;border-bottom:1px solid rgba(255,255,255,.08)}
.stepbar .container{display:flex;align-items:center;gap:.4rem;overflow-x:auto;padding-block:.6rem;scrollbar-width:none}
.stepbar .container::-webkit-scrollbar{display:none}
.step-chip{display:flex;align-items:center;gap:.5rem;padding:.4rem .85rem;border-radius:999px;font-size:.8rem;font-weight:600;color:rgba(255,255,255,.55);white-space:nowrap;transition:all .15s;border:1px solid transparent}
.step-chip .sc-num{display:inline-flex;align-items:center;justify-content:center;width:20px;height:20px;border-radius:50%;background:rgba(255,255,255,.12);font-size:.72rem;font-weight:700}
.step-chip:hover{color:#fff;background:rgba(255,255,255,.06)}
.step-chip.active{color:#fff;background:var(--teal);border-color:var(--teal)}
.step-chip.active .sc-num{background:rgba(255,255,255,.25)}
.step-chip.done .sc-num{background:var(--teal-light);color:#fff}

/* ── Main layout ───────────────────────────────────────────── */
.survey-main{padding:2.5rem 0 4rem;background:var(--off-white);min-height:60vh}
.step-panel{display:none;animation:fade .3s var(--ease-out,ease)}
.step-panel.active{display:block}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:1.75rem;margin-bottom:1.5rem}
.card-lead{color:var(--text-muted);font-size:.98rem;margin-bottom:1.25rem;max-width:70ch}
.step-eyebrow{font-size:.72rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--teal)}
.step-title{font-size:1.6rem;margin:.35rem 0 .25rem}

/* ── Form controls ─────────────────────────────────────────── */
.field-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:1.1rem}
.field{display:flex;flex-direction:column;gap:.35rem}
.field label{font-size:.82rem;font-weight:600;color:var(--navy)}
.field .hint{font-size:.72rem;color:var(--text-light);font-weight:500}
.field .unit-suffix{font-size:.72rem;color:var(--teal);font-weight:600}
input[type=text],input[type=email],input[type=tel],input[type=number],select,textarea{
  width:100%;padding:.6rem .7rem;border:1.5px solid var(--border);border-radius:var(--radius-sm);
  font-size:.95rem;color:var(--navy);background:#fff;transition:border-color .15s,box-shadow .15s}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 3px rgba(14,124,123,.12)}
textarea{resize:vertical;min-height:80px}
select{appearance:none;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path fill='%235a7290' d='M1 1l5 5 5-5'/></svg>");background-repeat:no-repeat;background-position:right .7rem center;padding-right:1.8rem}

/* system picker cards */
.system-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1rem}
.sys-card{position:relative;border:1.5px solid var(--border);border-radius:var(--radius);padding:1.15rem 1.15rem 1.1rem;cursor:pointer;transition:all .18s;background:#fff}
.sys-card:hover{border-color:var(--teal);box-shadow:var(--shadow-sm);transform:translateY(-2px)}
.sys-card.selected{border-color:var(--teal);background:var(--teal-pale)}
.sys-card .sc-check{position:absolute;top:.8rem;right:.8rem;width:22px;height:22px;border-radius:50%;border:2px solid var(--border);display:flex;align-items:center;justify-content:center;color:#fff;font-size:.7rem;transition:all .15s}
.sys-card.selected .sc-check{background:var(--teal);border-color:var(--teal)}
.sys-card .sc-icon{width:38px;height:38px;color:var(--teal);margin-bottom:.65rem}
.sys-card h4{font-family:var(--font-body);font-size:1.02rem;font-weight:700;color:var(--navy);margin-bottom:.25rem}
.sys-card p{font-size:.8rem;color:var(--text-muted);line-height:1.45}

/* subsection */
.subsec{border-top:1px solid var(--border);padding-top:1.4rem;margin-top:1.4rem}
.subsec:first-of-type{border-top:none;padding-top:0;margin-top:0}
.subsec-head{display:flex;align-items:center;gap:.6rem;margin-bottom:1rem}
.subsec-head .badge{background:var(--teal-pale);color:var(--teal);font-size:.68rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:.25rem .55rem;border-radius:999px}
.subsec-head h3{font-family:var(--font-body);font-size:1.12rem;font-weight:700}
.subsec-desc{font-size:.85rem;color:var(--text-muted);margin-bottom:1rem;margin-top:-.5rem}

/* toggle button group */
.toggle-group{display:inline-flex;border:1.5px solid var(--border);border-radius:8px;overflow:hidden;background:var(--gray-100)}
.toggle-group button{padding:.45rem 1rem;font-size:.82rem;font-weight:600;color:var(--text-secondary);transition:all .15s}
.toggle-group button.active{background:var(--teal);color:#fff}

/* chemical feed repeatable rows */
.chem-table{width:100%;border-collapse:collapse;font-size:.85rem}
.chem-table th{text-align:left;font-size:.7rem;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);font-weight:700;padding:.5rem .5rem;border-bottom:2px solid var(--border)}
.chem-table td{padding:.4rem .4rem;border-bottom:1px solid var(--gray-100);vertical-align:top}
.chem-table input,.chem-table select{padding:.45rem .5rem;font-size:.85rem}
.chem-table .row-del{color:var(--red);font-size:1.1rem;line-height:1;padding:.3rem}
.btn-addrow{margin-top:.8rem;font-size:.82rem;font-weight:600;color:var(--teal);display:inline-flex;align-items:center;gap:.35rem}
.btn-addrow:hover{text-decoration:underline}

/* sales — contact mapping */
.contact-card{border:1.5px solid var(--border);border-radius:var(--radius);padding:1.1rem;margin-bottom:1rem;background:#fff;position:relative}
.contact-card .cc-del{position:absolute;top:.7rem;right:.7rem;color:var(--red);font-size:1.15rem}
.sentiment-pills{display:flex;gap:.4rem;flex-wrap:wrap}
.pill{padding:.35rem .8rem;border-radius:999px;font-size:.78rem;font-weight:600;border:1.5px solid var(--border);color:var(--text-secondary);transition:all .15s}
.pill[data-active=true][data-v=supporter]{background:var(--green-light);border-color:var(--green);color:var(--green)}
.pill[data-active=true][data-v=neutral]{background:var(--gray-100);border-color:var(--gray-400);color:var(--gray-600)}
.pill[data-active=true][data-v=detractor]{background:var(--red-light);border-color:var(--red);color:var(--red)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.7rem 1.4rem;border-radius:var(--radius-sm);font-size:.92rem;font-weight:700;transition:all .18s}
.btn-primary{background:var(--teal);color:#fff}
.btn-primary:hover{background:#0b6362}
.btn-navy{background:var(--navy);color:#fff}
.btn-navy:hover{background:var(--navy-mid)}
.btn-ghost{background:#fff;color:var(--navy);border:1.5px solid var(--border)}
.btn-ghost:hover{border-color:var(--teal);color:var(--teal)}
.btn:disabled{opacity:.5;cursor:not-allowed}
.step-actions{display:flex;justify-content:space-between;gap:1rem;margin-top:1.75rem;flex-wrap:wrap}

/* summary / review */
.summary-block{margin-bottom:1.5rem}
.summary-block h4{font-family:var(--font-body);font-size:.95rem;font-weight:700;color:var(--navy);text-transform:uppercase;letter-spacing:.04em;padding-bottom:.5rem;border-bottom:2px solid var(--teal-pale);margin-bottom:.8rem}
.kv{display:grid;grid-template-columns:minmax(160px,220px) 1fr;gap:.3rem 1rem;font-size:.88rem}
.kv dt{color:var(--text-muted);font-weight:600}
.kv dd{color:var(--navy)}
.summary-empty{color:var(--text-light);font-style:italic;font-size:.88rem}

/* callouts */
.callout{border-left:4px solid var(--teal);background:var(--teal-pale);padding:.9rem 1.1rem;border-radius:0 var(--radius-sm) var(--radius-sm) 0;font-size:.88rem;color:var(--navy);margin:1rem 0}
.callout.amber{border-color:var(--amber);background:var(--amber-light)}
.callout.amber b{color:var(--amber)}

/* gated download modal */
.modal-overlay{position:fixed;inset:0;background:rgba(8,20,41,.6);backdrop-filter:blur(3px);display:none;align-items:center;justify-content:center;z-index:200;padding:1.5rem}
.modal-overlay.open{display:flex}
.modal{background:#fff;border-radius:var(--radius-lg);max-width:460px;width:100%;box-shadow:var(--shadow-lg);overflow:hidden;animation:fade .25s ease}
.modal-head{background:linear-gradient(160deg,var(--navy-deep),var(--navy-mid));color:#fff;padding:1.5rem 1.75rem}
.modal-head .lock{width:34px;height:34px;color:var(--teal-light);margin-bottom:.6rem}
.modal-head h3{color:#fff;font-size:1.35rem}
.modal-head p{color:rgba(255,255,255,.8);font-size:.88rem;margin-top:.4rem}
.modal-body{padding:1.5rem 1.75rem}
.modal-body .field{margin-bottom:.9rem}
.modal-close{position:absolute;top:1rem;right:1rem;color:rgba(255,255,255,.7);font-size:1.4rem}
.field-error{color:var(--red);font-size:.75rem;font-weight:600}
.form-msg{font-size:.85rem;font-weight:600;padding:.6rem .8rem;border-radius:var(--radius-sm);margin-top:.5rem;display:none}
.form-msg.ok{background:var(--green-light);color:var(--green);display:block}
.form-msg.err{background:var(--red-light);color:var(--red);display:block}

/* toast */
.toast{position:fixed;bottom:1.5rem;left:50%;transform:translateX(-50%) translateY(200%);background:var(--navy);color:#fff;padding:.85rem 1.4rem;border-radius:var(--radius);box-shadow:var(--shadow-lg);font-size:.9rem;font-weight:600;z-index:300;transition:transform .35s var(--ease-out,ease);max-width:90vw}
.toast.show{transform:translateX(-50%) translateY(0)}
.toast.err{background:var(--red)}

/* footer */
.footer{background:var(--navy-deep);color:rgba(255,255,255,.7);padding:2.5rem 0;font-size:.85rem;text-align:center}
.footer a{color:var(--teal-light);font-weight:600}
.footer .fnote{margin-top:.5rem;font-size:.78rem;color:rgba(255,255,255,.45)}

/* download options row */
.dl-row{display:flex;gap:1rem;flex-wrap:wrap;margin-top:1.5rem}
.dl-card{flex:1;min-width:260px;border:1.5px solid var(--border);border-radius:var(--radius);padding:1.3rem;background:#fff}
.dl-card h4{font-family:var(--font-body);font-size:1.05rem;font-weight:700;margin-bottom:.4rem}
.dl-card p{font-size:.85rem;color:var(--text-muted);margin-bottom:1rem}
.tag-gated{display:inline-block;background:var(--amber-light);color:var(--amber);font-size:.68rem;font-weight:700;padding:.2rem .5rem;border-radius:4px;letter-spacing:.05em;text-transform:uppercase;margin-bottom:.6rem}
.tag-open{display:inline-block;background:var(--green-light);color:var(--green);font-size:.68rem;font-weight:700;padding:.2rem .5rem;border-radius:4px;letter-spacing:.05em;text-transform:uppercase;margin-bottom:.6rem}

.req::after{content:' *';color:var(--red)}
@media(max-width:640px){
  .card{padding:1.25rem}
  .kv{grid-template-columns:1fr}
  .kv dt{margin-top:.5rem}
  .pi-stats{gap:1.75rem}
}