/* ============================================================
   Billing Buddy site styles (homepage + solution pages)
   Palette (from current billingbuddy.io brand):
     Accent  Blue  #4862B7  (the only accent)
     Navy          #1D3E5B  (headings, dark band)
     Ink           #25252D  (body text)
     Muted         #5B6B7E
     Paper         #F7F9FC  (alt sections)
     Line          #E3E9F2
   ============================================================ */
:root{
  --accent:#4862B7; --accent-dark:#3a50a0; --accent-soft:#EEF1FB;
  --navy:#1D3E5B; --ink:#25252D; --muted:#5B6B7E;
  --paper:#F7F9FC; --line:#E3E9F2; --white:#fff;
  --radius:18px; --maxw:1180px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{font-family:'Poppins',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;color:var(--ink);background:var(--white);line-height:1.6;font-size:17px;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent);text-decoration:none}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
section{padding:112px 0}
.alt{background:var(--paper)}
h1,h2,h3{color:var(--navy);line-height:1.08;letter-spacing:-.02em;font-weight:800}
h1{font-size:clamp(2.6rem,6.4vw,5rem)}
h2{font-size:clamp(2rem,4vw,3.1rem)}
h3{font-size:1.45rem;font-weight:700;letter-spacing:-.01em}
.eyebrow{display:inline-block;font-size:.8rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin-bottom:18px}
.lead{font-size:clamp(1.1rem,1.6vw,1.3rem);color:var(--muted);max-width:56ch}
.section-head{max-width:760px;margin-bottom:56px}
.section-head .lead{margin-top:16px}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:8px;padding:16px 28px;border-radius:999px;font-weight:600;font-size:1rem;border:2px solid transparent;transition:background .2s,color .2s,border-color .2s;cursor:pointer;font-family:inherit}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark)}
.btn-ghost{border-color:var(--line);color:var(--navy);background:#fff}
.btn-ghost:hover{border-color:var(--navy)}
.btn-sm{padding:10px 20px;font-size:.92rem}

/* Header */
header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:76px}
.logo img{height:42px;width:auto}
.nav ul{display:flex;align-items:center;gap:34px;list-style:none}
.nav ul a:not(.btn){color:var(--navy);font-weight:500;font-size:.95rem}
.nav ul a:not(.btn):hover{color:var(--accent)}

/* Hero */
.hero{padding:96px 0 104px}
.hero .wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:center}
.hero .lead{margin:24px 0 36px}
.cta-row{display:flex;gap:14px;flex-wrap:wrap}

/* Run it your way */
.models{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.model{padding:36px;border-radius:var(--radius);background:var(--paper);border:1px solid var(--line)}
.model .tag{font-size:.8rem;font-weight:700;letter-spacing:.12em;color:var(--muted);text-transform:uppercase}
.model h3{font-size:1.8rem;margin:10px 0 8px}
.model.featured{background:var(--navy);border-color:var(--navy)}
.model.featured h3{color:#fff}.model.featured p,.model.featured .tag{color:#c9d5e3}

/* How it works */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;counter-reset:s}
.step{position:relative;padding-top:64px}
.step::before{counter-increment:s;content:counter(s);position:absolute;top:0;left:0;width:44px;height:44px;border-radius:50%;background:var(--accent);color:#fff;font-weight:700;display:grid;place-items:center}
.step h3{margin-bottom:8px}
.step p{color:var(--muted)}

/* Proof numbers */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-bottom:96px}
.stat{border-top:3px solid var(--accent);padding-top:20px}
.stat b{display:block;font-size:clamp(2.4rem,4.6vw,3.6rem);font-weight:800;color:var(--navy);line-height:1;letter-spacing:-.03em}
.stat span{display:block;margin-top:10px;color:var(--muted);font-size:.98rem}

/* Use cases + before/after */
.case{display:grid;grid-template-columns:.8fr 1.2fr;gap:56px;align-items:start;padding:56px 0;border-top:1px solid var(--line)}
.case:first-of-type{border-top:0;padding-top:0}
.pill{display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);background:var(--accent-soft);border-radius:999px;padding:6px 14px;margin-bottom:16px}
.case h3{font-size:clamp(1.6rem,2.6vw,2.2rem);margin-bottom:28px}
.case dl{display:grid;gap:4px}
.case dt{font-size:.8rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.case dd{color:var(--ink);margin-bottom:14px}
.ba{display:grid;grid-template-columns:1fr 44px 1fr;align-items:stretch}
.ba .col{border-radius:var(--radius);padding:28px}
.ba .before{background:var(--paper);border:1px solid var(--line)}
.ba .after{background:#fff;border:2px solid var(--accent);box-shadow:0 20px 40px -24px rgba(72,98,183,.45)}
.ba h3,.ba h4{font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;margin-bottom:18px;color:var(--muted)}
.ba .after h3,.ba .after h4{color:var(--accent)}
.ba ol{list-style:none;display:grid;gap:12px}
.ba li{display:flex;gap:12px;align-items:flex-start;font-size:.97rem;line-height:1.45}
.ba li i{flex:0 0 22px;height:22px;border-radius:50%;display:grid;place-items:center;font-style:normal;font-size:.75rem;font-weight:700;margin-top:1px}
.ba .before li{color:var(--muted)}
.ba .before li i{background:#e6eaf0;color:var(--muted)}
.ba .after li{color:var(--ink);font-weight:500}
.ba .after li i{background:var(--accent);color:#fff}
.ba .arrow{display:grid;place-items:center;color:var(--accent)}
.ba .arrow svg{width:26px;height:26px}

/* Contact */
.contact .wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:72px;align-items:start}
.contact-side p{margin-top:16px}
.contact-side .alt-cta{margin-top:36px;display:grid;gap:14px}
.contact-side .alt-cta a.phone{font-weight:700;font-size:1.25rem;color:var(--navy)}
form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:40px;display:grid;grid-template-columns:1fr 1fr;gap:18px}
form .full{grid-column:1/-1}
label{display:block;font-size:.85rem;font-weight:600;color:var(--navy);margin-bottom:6px}
input,select,textarea{width:100%;font:inherit;font-size:.98rem;padding:13px 15px;border:1px solid var(--line);border-radius:12px;background:var(--paper);color:var(--ink)}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent);background:#fff}
textarea{min-height:120px;resize:vertical}
.form-note{font-size:.85rem;color:var(--muted)}

/* Footer */
footer{background:var(--navy);color:#c9d5e3;padding:56px 0}
footer .wrap{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
footer .logo-chip{background:#fff;border-radius:12px;padding:8px 14px;display:inline-block}
footer .logo-chip img{height:34px;width:auto}
footer .certs{font-weight:600;color:#fff;letter-spacing:.06em}
footer small{display:block;margin-top:6px;font-size:.85rem}
footer a{color:#fff}
.foot-right{text-align:right}

/* ---- Dictionary hero ---- */
.hero .wrap{grid-template-columns:.95fr 1.05fr;gap:72px}
.dict{background:#fff;border:1px solid var(--line);border-radius:24px;padding:44px 44px 40px;box-shadow:0 30px 60px -24px rgba(29,62,91,.22)}
.dict-logo{width:100%;max-width:440px;height:auto;margin:0 auto 34px}
.dict-entry{border-left:3px solid var(--accent);padding:4px 0 4px 22px}
.dict-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 16px;margin-bottom:10px;color:var(--navy)}
.dict-head dfn{font-family:'Source Serif 4',Georgia,'Times New Roman',serif;font-style:normal;font-weight:700;font-size:clamp(2.2rem,3.6vw,3rem);letter-spacing:-.01em;line-height:1}
.dict-pron{font-family:'Source Serif 4',Georgia,serif;font-size:1.25rem;color:var(--muted)}
.dict-pos{font-family:'Source Serif 4',Georgia,serif;font-style:italic;font-size:1.2rem;color:var(--accent)}
.dict-def{font-family:'Source Serif 4',Georgia,serif;font-size:clamp(1.2rem,1.7vw,1.4rem);color:var(--ink);line-height:1.45}
.hero-copy h1{font-size:clamp(2.6rem,5.4vw,4.4rem)}
.hero-copy .lead{margin:24px 0 36px}

/* ---- Solutions cards ---- */
.sol-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:96px}
.sol{background:#fff;border:1px solid var(--line);border-top:4px solid var(--accent);border-radius:var(--radius);padding:30px 26px;display:flex;flex-direction:column;box-shadow:0 18px 40px -28px rgba(29,62,91,.35)}
.sol-num{font-size:.8rem;font-weight:700;letter-spacing:.12em;color:var(--accent)}
.sol h3{font-size:1.35rem;margin:10px 0 12px;line-height:1.2}
.sol p{color:var(--muted);font-size:.98rem}
.sol-foot{margin-top:auto;padding-top:22px;border-top:1px solid var(--line);margin-top:24px;display:flex;flex-direction:column;gap:6px;font-size:.92rem;font-weight:600;color:var(--navy)}
.sol-foot a{font-weight:600}
.sol-foot-btn{border-top:0;padding-top:0}
.sol-foot-btn .btn{justify-content:center;text-align:center;width:100%}
.sol p{flex:1}
.detail-head{margin-bottom:40px}
.detail-head h2{font-size:clamp(1.6rem,2.6vw,2.2rem)}
.detail-head p{color:var(--muted);margin-top:8px}

/* ---- What is / Your way ---- */
.what{display:grid;grid-template-columns:.75fr 1.25fr;gap:64px;align-items:start}
.what-copy{font-size:clamp(1.08rem,1.45vw,1.22rem);line-height:1.75;color:var(--ink);max-width:62ch}
.models.two{grid-template-columns:repeat(2,1fr)}
.models.two .model h3{font-size:1.9rem}

/* ---- Product screenshots (browser frame) ---- */
.browser{margin:0;border-radius:16px;overflow:hidden;background:#fff;border:1px solid var(--line);box-shadow:0 40px 80px -30px rgba(29,62,91,.35),0 12px 24px -12px rgba(29,62,91,.18)}
.browser-bar{display:flex;align-items:center;gap:14px;height:38px;padding:0 14px;background:#EEF2F7;border-bottom:1px solid var(--line)}
.browser-bar .dots{display:flex;gap:6px}
.browser-bar .dots i{width:10px;height:10px;border-radius:50%;background:#d3dae4}
.browser-bar .dots i:nth-child(1){background:#F28B82}.browser-bar .dots i:nth-child(2){background:#F6C66B}.browser-bar .dots i:nth-child(3){background:#8BD3A0}
.browser-bar .url{flex:1;max-width:320px;margin:0 auto;text-align:center;font-size:.78rem;color:var(--muted);background:#fff;border:1px solid var(--line);border-radius:999px;padding:3px 12px;transform:translateX(-24px)}
.browser img{display:block;width:100%;height:auto}
.fig-cap{margin-top:14px;font-size:.9rem;color:var(--muted);text-align:center}
.what-shot{margin-top:64px}
.case-shot{grid-column:1/-1;max-width:980px;width:100%;margin:8px auto 0}

/* ---- Try it for free ---- */
.try-row{margin-top:40px;display:flex;align-items:center;justify-content:center;gap:16px 24px;flex-wrap:wrap;text-align:center}
.try-row p{color:var(--muted);font-size:1.05rem}
.btn-pair{display:flex;flex-wrap:wrap;gap:12px}
#contact-form{scroll-margin-top:110px}
.hp{position:absolute!important;left:-9999px!important;width:1px;height:1px;overflow:hidden}

/* Responsive */
@media (max-width:1100px){
  .sol-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:1000px){
  .what{grid-template-columns:1fr;gap:24px}
  .hero .wrap,.contact .wrap,.case{grid-template-columns:1fr;gap:40px}
  .stats{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:760px){
  section{padding:80px 0}
  .hero{padding:40px 0 72px}
  .dict{padding:28px 24px 26px;border-radius:20px}
  .dict-logo{margin-bottom:24px}
  .dict-entry{padding-left:16px}
  .wrap{padding:0 20px}
  .nav ul li:not(:last-child){display:none}
  .logo img{height:34px}
  .models,.models.two,.steps,.sol-grid{grid-template-columns:1fr}
  .sol-grid{margin-bottom:72px}
  .browser{border-radius:12px}
  .browser-bar{height:28px;padding:0 10px}
  .browser-bar .dots i{width:7px;height:7px}
  .browser-bar .url{font-size:.66rem;padding:1px 8px;transform:none}
  .what-shot{margin-top:40px}
  .model{padding:28px}
  .ba{grid-template-columns:1fr;grid-template-rows:auto 40px auto}
  .ba .arrow svg{transform:rotate(90deg)}
  form{grid-template-columns:1fr;padding:24px}
  .stats{gap:32px 20px;margin-bottom:72px}
  footer .wrap{flex-direction:column;align-items:flex-start}
  .foot-right{text-align:left}
  .steps{gap:44px}
}

/* ---- Solution cards: Learn more ---- */
.sol-grid{margin-bottom:0}
.sol .more{margin-top:24px;padding-top:18px;border-top:1px solid var(--line);font-weight:600;font-size:.95rem;display:inline-flex;align-items:center;gap:6px}
.sol .more:hover{color:var(--accent-dark)}
.sol .more span{transition:transform .2s}.sol .more:hover span{transform:translateX(3px)}

.alt .model:not(.featured){background:#fff}

/* ---- Solution pages ---- */
.crumbs{font-size:.88rem;color:var(--muted);margin-bottom:22px}
.crumbs a{color:var(--muted)}.crumbs a:hover{color:var(--accent)}
.page-hero{padding:88px 0 96px}
.page-hero .wrap{max-width:var(--maxw)}
.page-hero h1{font-size:clamp(2.4rem,5vw,4rem);max-width:16ch}
.page-hero .tagline{font-size:clamp(1.15rem,1.8vw,1.4rem);font-weight:700;color:var(--accent);margin-top:18px}
.page-hero .lead{margin:18px 0 34px}
.split{display:grid;grid-template-columns:.8fr 1.2fr;gap:64px;align-items:start}
.split p{font-size:clamp(1.05rem,1.4vw,1.18rem);color:var(--ink);max-width:60ch}
.pain{list-style:none;display:grid;gap:10px;margin-top:22px}
.pain li{display:flex;gap:12px;align-items:flex-start;color:var(--muted)}
.pain li::before{content:"✕";flex:0 0 22px;height:22px;border-radius:50%;background:#e6eaf0;color:var(--muted);display:grid;place-items:center;font-size:.7rem;font-weight:700;margin-top:3px}
.ba-wrap{max-width:900px}
.proof-line{max-width:920px;background:#fff;border:1px solid var(--line);border-left:5px solid var(--accent);border-radius:var(--radius);padding:40px 44px;box-shadow:0 18px 40px -28px rgba(29,62,91,.35)}
.proof-line .eyebrow{margin-bottom:12px}
.proof-line p{font-size:clamp(1.45rem,2.6vw,2.1rem);font-weight:800;color:var(--navy);line-height:1.2;letter-spacing:-.02em}
.proof-line .hl{display:inline;color:var(--accent)}
.proof-line small{display:block;margin-top:14px;font-size:1rem;color:var(--muted)}
.proof-band{display:grid;grid-template-columns:auto 1fr;gap:40px;align-items:center;border-top:3px solid var(--accent);padding-top:32px;max-width:900px}
.proof-band b{font-size:clamp(3.2rem,7vw,5.6rem);font-weight:800;color:var(--navy);line-height:1;letter-spacing:-.03em;white-space:nowrap}
.proof-band b .arr{font-weight:400;color:var(--accent);margin:0 .06em}
.proof-band p{font-size:clamp(1.1rem,1.6vw,1.3rem);color:var(--ink)}
.proof-band small{display:block;margin-top:8px;font-size:.95rem;color:var(--muted)}
.money-note{margin-top:28px;font-size:.95rem;font-weight:600;color:var(--navy);display:flex;gap:10px;align-items:flex-start}
.money-note::before{content:"$";flex:0 0 24px;height:24px;border-radius:50%;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;font-size:.78rem;font-weight:800}
.shot-wrap{max-width:1000px;margin:0 auto}
.cta-band{background:var(--navy);color:#c9d5e3;text-align:center}
.cta-band h2{color:#fff}
.cta-band p{max-width:50ch;margin:16px auto 32px;font-size:1.12rem}
.cta-band .cta-row{justify-content:center}
.cta-band .btn-primary{background:#fff;color:var(--navy)}.cta-band .btn-primary:hover{background:var(--accent-soft)}
.cta-band .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.35)}.cta-band .btn-ghost:hover{border-color:#fff}
.cta-band .cta-invite{margin:28px auto 0;font-size:1.02rem}
.cta-invite a{color:#fff;font-weight:600;text-decoration:underline;text-decoration-color:rgba(255,255,255,.45);text-underline-offset:5px}
.cta-invite a:hover{text-decoration-color:#fff}
.other-sols{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.other-sols a{font-size:.9rem;font-weight:600;color:var(--navy);border:1px solid var(--line);background:#fff;border-radius:999px;padding:8px 16px}
.other-sols a:hover{border-color:var(--accent);color:var(--accent)}
@media (max-width:1000px){.split{grid-template-columns:1fr;gap:20px}}
@media (max-width:760px){
  .page-hero{padding:48px 0 64px}
  .proof-band{grid-template-columns:1fr;gap:12px}
  .proof-line{padding:28px 24px}
  .cta-band{text-align:left}.cta-band p{margin-left:0}.cta-band .cta-row{justify-content:flex-start}
}

/* Print / PDF */
@media print{
  *{-webkit-print-color-adjust:exact;print-color-adjust:exact}
  header{position:static}
  .sol,.ba,.stat,.step,.model,.dict,form,.section-head,.browser,.proof-band,.proof-line,.cta-band{break-inside:avoid}
  h2,h3{break-after:avoid}
}

/* ---- Partners page ---- */
.beats{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.beat{background:#fff;border:1px solid var(--line);border-top:4px solid var(--accent);border-radius:var(--radius);padding:30px 26px;box-shadow:0 18px 40px -28px rgba(29,62,91,.35)}
.beat h3{font-size:1.4rem;margin:10px 0 10px;line-height:1.2}
.beat p{color:var(--muted);font-size:1rem}
#partner-form{scroll-margin-top:110px}

/* ---- Footer links ---- */
footer .foot-links a{color:#fff;font-weight:600;text-decoration:underline;text-decoration-color:rgba(255,255,255,.4);text-underline-offset:4px}
footer .foot-links a:hover{text-decoration-color:#fff}

@media (max-width:760px){.beats{grid-template-columns:1fr}}
@media print{.beat{break-inside:avoid}}

footer abbr[title]{text-decoration:none;cursor:help}

/* ---- Homepage FAQ (#faq): <details> accordion, no JS ---- */
.faq{padding:96px 0}
.faq + .contact{border-top:1px solid var(--line)}
.faq-wrap{display:grid;grid-template-columns:.7fr 1.3fr;gap:56px;align-items:start}
.faq-head{position:sticky;top:110px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:20px;padding:18px 4px;font-weight:600;font-size:1.04rem;color:var(--navy);line-height:1.4}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"";flex:0 0 26px;height:26px;border-radius:50%;background:var(--accent-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%234862B7' stroke-width='2.6' stroke-linecap='round'%3E%3Cpath d='M12 6v12M6 12h12'/%3E%3C/svg%3E") center/14px no-repeat;transition:transform .2s}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item summary:hover{color:var(--accent)}
.faq-item p{padding:0 46px 20px 4px;color:var(--muted);font-size:.98rem;max-width:68ch}
@media (prefers-reduced-motion:reduce){.faq-item summary::after{transition:none}}
@media (max-width:1000px){.faq-wrap{grid-template-columns:1fr;gap:24px}.faq-head{position:static}}
@media (max-width:760px){.faq{padding:72px 0}.faq-item summary{font-size:.98rem;padding:16px 0}.faq-item p{padding:0 0 18px 0}}
@media print{.faq-head{position:static}.faq-item{break-inside:avoid}}