/* NorthLedger micro-tools — shared stylesheet.
   Matches the NorthLedger design system (navy #1B2A4A, green #2E9E6B, gold #C9A227). */
:root{
  --navy:#1B2A4A;
  --navy-deep:#121E35;
  --green:#2E9E6B;
  --green-dark:#257F56;
  --gold:#C9A227;
  --page:#F2F4F8;
  --ink:#1A1A1A;
  --muted:#6B7280;
  --input:#EAF0F8;
  --line:#E5E7EB;
  --red:#C0392B;
  --amber:#D97706;
  --callout:#FFFBEB;
  --white:#FFFFFF;
  --radius:14px;
  --shadow:0 10px 30px rgba(27,42,74,.10);
  --shadow-lg:0 18px 50px rgba(27,42,74,.16);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:Calibri,"Segoe UI",-apple-system,BlinkMacSystemFont,"Helvetica Neue",Arial,sans-serif;
  color:var(--ink);background:var(--white);line-height:1.6;-webkit-font-smoothing:antialiased;
}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}

/* ---------- Nav ---------- */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.wordmark{font-size:22px;font-weight:700;color:var(--navy);text-decoration:none}
.wordmark .dot{color:var(--green)}
.wordmark .sub{font-size:13px;color:var(--muted);font-weight:600;letter-spacing:1px;text-transform:uppercase;margin-left:8px}
.nav-links{display:flex;gap:26px;align-items:center}
.nav-links a{color:var(--muted);text-decoration:none;font-size:16px;font-weight:600}
.nav-links a:hover,.nav-links a.active{color:var(--navy)}

/* ---------- Buttons ---------- */
.btn{display:inline-block;text-decoration:none;font-weight:700;font-size:16px;padding:13px 26px;border-radius:10px;transition:transform .12s ease,box-shadow .12s ease,background .12s ease;cursor:pointer;border:0}
.btn-green{background:var(--green);color:#fff;box-shadow:0 6px 16px rgba(46,158,107,.35)}
.btn-green:hover{background:var(--green-dark);transform:translateY(-1px)}
.btn-gold{background:var(--gold);color:var(--navy-deep);box-shadow:0 6px 16px rgba(201,162,39,.35)}
.btn-gold:hover{transform:translateY(-1px)}
.btn-navy{background:var(--navy);color:#fff}
.btn-navy:hover{background:var(--navy-deep);transform:translateY(-1px)}
.btn-block{width:100%;text-align:center}

/* ---------- Hero ---------- */
.hero{background:linear-gradient(160deg,var(--navy-deep) 0%,var(--navy) 70%);color:#fff;padding:76px 0 84px;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;left:0;right:0;bottom:0;height:5px;background:var(--gold)}
.hero.slim{padding:52px 0 60px}
.hero h1{font-size:clamp(32px,5vw,52px);line-height:1.12;font-weight:700;max-width:700px;letter-spacing:-.5px}
.hero h1 .accent{color:var(--gold)}
.hero p.sub{font-size:clamp(16px,2.2vw,20px);color:#C7D0E2;max-width:640px;margin:18px 0 0}
.crumbs{margin-bottom:18px;font-size:14px;color:#9AA6C4}
.crumbs a{color:#C7D0E2;text-decoration:none}
.crumbs a:hover{color:#fff}

/* ---------- Sections ---------- */
section{padding:72px 0}
.band{background:var(--page)}
.sec-head{text-align:center;max-width:660px;margin:0 auto 48px}
.sec-head h2{font-size:clamp(26px,3.6vw,36px);color:var(--navy);letter-spacing:-.3px}
.sec-head .rule{width:64px;height:4px;background:var(--gold);margin:14px auto 16px;border-radius:2px}
.sec-head p{color:var(--muted);font-size:18px}

/* ---------- Tool cards ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;align-items:stretch}
.card{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);display:flex;flex-direction:column;overflow:hidden;border:1px solid var(--line);transition:transform .15s ease,box-shadow .15s ease}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.card-top{background:var(--navy);color:#fff;padding:20px 24px;border-bottom:4px solid var(--gold)}
.card-top h3{font-size:19px;line-height:1.3}
.card-top h3 a{color:#fff;text-decoration:none}
.card-top .tag{font-size:13px;color:#C7D0E2;margin-top:6px}
.card-body{padding:24px;display:flex;flex-direction:column;flex:1}
.card-body p{font-size:15.5px;color:var(--muted);margin-bottom:20px;flex:1}
.card-body .btn{text-align:center}

/* ---------- Calculator layout ---------- */
.calc-layout{display:grid;grid-template-columns:400px 1fr;gap:28px;align-items:start}
.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.panel-head{background:var(--navy);color:#fff;padding:18px 24px;border-bottom:4px solid var(--gold)}
.panel-head h2{font-size:19px}
.panel-body{padding:26px}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:700;color:var(--navy);margin-bottom:6px}
.field .hint{font-size:12.5px;color:var(--muted);font-weight:400;margin-top:4px;display:block}
.field input,.field select{
  width:100%;padding:12px 14px;font-size:16px;font-weight:700;color:var(--navy);
  background:var(--input);border:2px solid var(--green);border-radius:8px;font-family:inherit;
}
.field input:focus,.field select:focus{outline:3px solid rgba(46,158,107,.25)}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.results{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.kpi{background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px 22px;box-shadow:var(--shadow)}
.kpi.hero{grid-column:1/-1;background:linear-gradient(150deg,var(--navy-deep),var(--navy));border:0}
.kpi.hero .kpi-label{color:#C7D0E2}
.kpi.hero .kpi-value{color:var(--gold)}
.kpi-label{font-size:13px;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.6px}
.kpi-value{font-size:30px;font-weight:700;color:var(--navy);margin-top:6px}
.kpi-value.small{font-size:22px}
.kpi-note{font-size:13px;color:var(--muted);margin-top:6px}

/* usage bar (data-bar style) */
.usage-wrap{margin-top:10px}
.usage-bar{height:14px;background:var(--line);border-radius:7px;overflow:hidden}
.usage-fill{height:100%;background:var(--green);border-radius:7px;transition:width .3s ease}
.usage-fill.warn{background:var(--amber)}
.usage-fill.breach{background:var(--red)}
.usage-meta{display:flex;justify-content:space-between;font-size:13px;color:var(--muted);margin-top:6px}

/* status pill */
.pill{display:inline-block;padding:8px 18px;border-radius:999px;font-weight:700;font-size:15px;color:#fff}
.pill.green{background:var(--green)}
.pill.amber{background:var(--amber)}
.pill.red{background:var(--red)}

/* callout (disclaimer / note) */
.callout{background:var(--callout);border:1px solid var(--gold);border-radius:12px;padding:18px 22px;font-size:15px;color:var(--ink);margin:24px 0}
.callout strong{color:var(--navy)}
.callout.warn{border-color:var(--red);background:#FDF0EE}

/* tables */
.data-table{width:100%;border-collapse:collapse;font-size:15px;margin-top:8px}
.data-table th{background:var(--navy);color:#fff;text-align:left;padding:12px 14px;font-size:14px}
.data-table th.num,.data-table td.num{text-align:right}
.data-table td{padding:11px 14px;border-bottom:1px solid var(--line)}
.data-table tr:nth-child(even) td{background:var(--page)}
.table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:12px;margin-top:18px}

/* explainer */
.explain{max-width:760px}
.explain h3{color:var(--navy);font-size:20px;margin:26px 0 10px;padding-bottom:8px;border-bottom:3px solid var(--gold);display:inline-block}
.explain p,.explain li{font-size:16px;color:var(--ink)}
.explain ul{padding-left:22px;margin:10px 0}
.explain li{margin-bottom:8px}

.price-row{display:flex;align-items:baseline;gap:10px;margin-bottom:18px}
.price-row .price{font-size:34px;font-weight:700;color:var(--navy)}
.price-row .price-note{font-size:13px;color:var(--muted)}

/* ---------- Ad slots ---------- */
.ad-slot{
  border:2px dashed #B9C2D4;background:#F8FAFD;border-radius:12px;
  color:#8A94A8;font-size:13px;font-weight:700;letter-spacing:1.5px;text-transform:uppercase;
  text-align:center;padding:26px 16px;margin:36px 0;
}
.ad-slot small{display:block;font-weight:400;letter-spacing:0;text-transform:none;margin-top:4px}

/* ---------- Newsletter CTA ---------- */
.newsletter{max-width:680px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:52px;text-align:center}
.newsletter h2{color:var(--navy);font-size:clamp(24px,3.4vw,32px)}
.newsletter .rule{width:64px;height:4px;background:var(--gold);margin:14px auto 16px;border-radius:2px}
.newsletter p{color:var(--muted);font-size:17px;margin-bottom:26px}
.news-form{display:flex;gap:12px;max-width:480px;margin:0 auto}
.news-form input{flex:1;padding:13px 16px;font-size:16px;border:2px solid var(--line);border-radius:10px;font-family:inherit}
.news-form input:focus{outline:3px solid rgba(46,158,107,.25);border-color:var(--green)}
.news-note{font-size:13px;color:var(--muted);margin-top:14px}

/* ---------- FAQ ---------- */
.faq{max-width:760px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:14px;overflow:hidden}
.faq-item summary{padding:18px 22px;font-weight:700;color:var(--navy);font-size:17px;cursor:pointer;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";float:right;color:var(--gold);font-size:22px;font-weight:700}
.faq-item[open] summary::after{content:"–"}
.faq-item .faq-a{padding:0 22px 20px;color:var(--ink);font-size:16px}

/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;counter-reset:step}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;box-shadow:var(--shadow);text-align:center}
.step .num{font-size:40px;font-weight:700;color:var(--gold)}
.step h3{color:var(--navy);font-size:19px;margin:8px 0}
.step p{color:var(--muted);font-size:15.5px}

/* ---------- Footer ---------- */
footer{background:var(--navy-deep);color:#9AA6C4;padding:56px 0 40px;font-size:15px}
footer::before{content:"";display:block;height:5px;background:var(--gold);margin:-56px 0 56px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:36px;margin-bottom:36px}
.foot-brand{font-size:22px;font-weight:700;color:#fff}
.foot-brand .dot{color:var(--green)}
footer h4{color:#fff;font-size:15px;margin-bottom:14px;letter-spacing:.5px}
footer a{color:#C7D0E2;text-decoration:none;display:block;margin-bottom:10px}
footer a:hover{color:#fff}
.foot-bottom{border-top:1px solid rgba(255,255,255,.12);padding-top:24px;font-size:13.5px;line-height:1.7}
.foot-bottom .disc{margin-top:12px;font-style:italic}

/* ---------- Chart ---------- */
.chart{margin-top:18px}
.chart .bar-row{display:flex;align-items:flex-end;gap:6px;height:180px;padding:10px 0 0;border-bottom:2px solid var(--line)}
.chart .bar{flex:1;background:linear-gradient(180deg,var(--green),var(--green-dark));border-radius:4px 4px 0 0;min-height:3px;position:relative}
.chart .bar .growth{background:rgba(201,162,39,.55);position:absolute;bottom:0;left:0;right:0;border-radius:4px 4px 0 0}
.chart .x-labels{display:flex;gap:6px;margin-top:8px}
.chart .x-labels span{flex:1;text-align:center;font-size:11px;color:var(--muted)}
.legend{display:flex;gap:20px;margin-top:12px;font-size:14px;color:var(--muted)}
.legend i{display:inline-block;width:14px;height:14px;border-radius:3px;margin-right:6px;vertical-align:-1px}
.legend .l-contrib{background:var(--green-dark)}
.legend .l-growth{background:var(--gold)}

/* ---------- Responsive ---------- */
@media(max-width:960px){
  .cards{grid-template-columns:1fr 1fr}
  .calc-layout{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .news-form{flex-direction:column}
}
@media(max-width:600px){
  .cards{grid-template-columns:1fr}
  .results{grid-template-columns:1fr}
  .field-row{grid-template-columns:1fr}
  .nav-links a:not(.keep){display:none}
  section{padding:52px 0}
  .hero{padding:56px 0 64px}
}