/* ==========================================================================
   BILLFLOW — Design System
   Display: Space Grotesk · Body: Inter · Data/Mono: JetBrains Mono
   ========================================================================== */

:root{
  --bg:            #090C11;
  --bg-elevated:   #10141C;
  --bg-elevated-2: #151B25;
  --line:          rgba(255,255,255,0.09);
  --line-soft:     rgba(255,255,255,0.05);

  --text:          #F2F5F4;
  --text-muted:    #93A1AF;
  --text-faint:    #5C6773;

  --teal:          #16E8C4;
  --teal-dim:      #0E8F7C;
  --gold:          #FFB74D;
  --coral:         #FF6B57;

  --grad-flow: linear-gradient(120deg, #16E8C4 0%, #4FD3E8 45%, #FFB74D 100%);

  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --container: 1240px;
  --radius-s: 10px;
  --radius-m: 18px;
  --radius-l: 28px;

  --ease: cubic-bezier(.16,.84,.32,1);
}

*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *, *::before, *::after{ animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}

body{
  margin:0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg{ display:block; max-width:100%; }
a{ color: inherit; text-decoration: none; }
ul{ margin:0; padding:0; list-style:none; }
button{ font-family: inherit; cursor:pointer; }

::selection{ background: var(--teal); color:#04140F; }

.wrap{
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

h1,h2,h3,h4{
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.08;
  margin: 0;
}

.eyebrow{
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before{
  content:'';
  width: 18px; height: 1px;
  background: var(--teal);
  display:inline-block;
}

.section{ padding: 128px 0; position: relative; }
.section-head{ max-width: 620px; margin-bottom: 64px; }
.section-head p{ color: var(--text-muted); font-size: 17px; margin-top: 18px; }

@media (max-width: 780px){
  .section{ padding: 84px 0; }
  .wrap{ padding: 0 20px; }
}

/* focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible{
  outline: 2px solid var(--teal);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- Buttons ---------- */
.btn{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 26px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 13.5px;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
  transition: transform .35s var(--ease), background .3s ease, border-color .3s ease, color .3s ease;
  white-space: nowrap;
}
.btn-primary{
  background: var(--teal);
  color: #04140F;
  font-weight: 600;
}
.btn-primary:hover{ transform: translateY(-2px); background: #3CF3D3; }
.btn-ghost{
  border-color: var(--line);
  color: var(--text);
  background: rgba(255,255,255,0.02);
}
.btn-ghost:hover{ border-color: var(--teal); color: var(--teal); transform: translateY(-2px); }
.btn-arrow{ transition: transform .35s var(--ease); }
.btn:hover .btn-arrow{ transform: translateX(4px); }

/* ---------- Nav ---------- */
.site-header{
  position: fixed; top:0; left:0; right:0; z-index: 100;
  padding: 18px 0;
  transition: background .4s ease, border-color .4s ease, padding .4s ease;
  border-bottom: 1px solid transparent;
}
.site-header.scrolled{
  background: rgba(9,12,17,0.78);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
  padding: 13px 0;
}
.nav-inner{ display:flex; align-items:center; justify-content: space-between; gap: 24px; }
.brand{ display:flex; align-items:center; gap: 10px; font-family: var(--font-display); font-weight: 700; font-size: 19px; letter-spacing: -0.01em; }
.brand-mark{ width: 30px; height: 30px; flex-shrink: 0; }
.nav-links{ display:flex; align-items:center; gap: 36px; }
.nav-links a{
  font-size: 14.5px; color: var(--text-muted); position: relative; padding: 4px 0;
  transition: color .25s ease;
}
.nav-links a::after{
  content:''; position:absolute; left:0; bottom:0; width:0; height:1px; background: var(--teal);
  transition: width .3s var(--ease);
}
.nav-links a:hover{ color: var(--text); }
.nav-links a:hover::after{ width: 100%; }
.nav-cta{ display:flex; align-items:center; gap: 14px; }
.nav-toggle{ display:none; background:none; border:none; color: var(--text); }

@media (max-width: 900px){
  .nav-links{
    position: fixed; inset: 64px 0 0 0; background: var(--bg);
    flex-direction: column; justify-content: center; gap: 30px;
    transform: translateX(100%); transition: transform .45s var(--ease);
  }
  .nav-links.open{ transform: translateX(0); }
  .nav-links a{ font-size: 22px; }
  .nav-toggle{ display:block; }
  .nav-cta .btn-ghost{ display:none; }
}

/* ---------- Hero ---------- */
.hero{
  position: relative;
  padding: 200px 0 140px;
  overflow: hidden;
}
.hero-canvas-wrap{
  position: absolute; inset: 0; z-index: 0;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,1) 55%, rgba(0,0,0,0) 96%);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,1) 55%, rgba(0,0,0,0) 96%);
}
#hero-canvas{ width:100%; height:100%; display:block; }
.hero-inner{ position: relative; z-index: 2; }
.hero-eyebrow{ margin-bottom: 26px; }
.hero h1{
  font-size: clamp(40px, 6.4vw, 84px);
  max-width: 15ch;
}
.hero h1 .flow-word{
  background: var(--grad-flow);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub{
  margin-top: 26px; max-width: 560px; font-size: 18px; color: var(--text-muted);
}
.hero-actions{ display:flex; align-items:center; gap: 18px; margin-top: 44px; flex-wrap: wrap; }
.hero-meta{
  margin-top: 90px; display:flex; gap: 56px; flex-wrap: wrap;
  padding-top: 34px; border-top: 1px solid var(--line);
  max-width: 760px;
}
.hero-meta div span{ display:block; }
.hero-meta .num{ font-family: var(--font-mono); font-size: 26px; color: var(--text); }
.hero-meta .lbl{ font-size: 13px; color: var(--text-faint); margin-top: 4px; }

@media (max-width: 700px){
  .hero{ padding: 150px 0 90px; }
  .hero-meta{ gap: 32px; }
}

/* ---------- Marquee strip ---------- */
.strip{
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  padding: 26px 0; overflow: hidden; background: var(--bg-elevated);
}
.marquee{ display:flex; width: max-content; gap: 64px; animation: scrollx 32s linear infinite; }
.marquee span{
  font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--text-faint); white-space: nowrap; display:flex; align-items:center; gap: 64px;
}
.marquee span b{ color: var(--text-muted); font-weight: 500; }
@keyframes scrollx{ from{ transform: translateX(0);} to{ transform: translateX(-50%);} }

/* ---------- Services ---------- */
.service-grid{
  display:grid; grid-template-columns: repeat(3, 1fr); gap: 22px;
}
@media (max-width: 980px){ .service-grid{ grid-template-columns: repeat(2,1fr); } }
@media (max-width: 620px){ .service-grid{ grid-template-columns: 1fr; } }

.card3d{ perspective: 1000px; }
.service-card{
  position: relative;
  background: linear-gradient(160deg, var(--bg-elevated) 0%, var(--bg-elevated-2) 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 32px 28px 30px;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform .12s ease-out, border-color .3s ease, box-shadow .3s ease;
  will-change: transform;
}
.service-card:hover{ border-color: rgba(22,232,196,0.35); box-shadow: 0 24px 60px -20px rgba(0,0,0,0.6); }
.service-card .icon{
  width: 44px; height:44px; border-radius: 12px;
  background: rgba(22,232,196,0.1); border: 1px solid rgba(22,232,196,0.25);
  display:flex; align-items:center; justify-content:center; margin-bottom: 22px;
  transform: translateZ(30px);
}
.service-card .icon svg{ width: 22px; height: 22px; stroke: var(--teal); }
.service-card h3{ font-size: 19px; transform: translateZ(20px); }
.service-card p{ color: var(--text-muted); font-size: 14.5px; margin-top: 10px; transform: translateZ(20px); }
.service-card .tag{
  font-family: var(--font-mono); font-size: 11px; color: var(--text-faint);
  position:absolute; top: 30px; right: 28px; letter-spacing: 0.08em;
}

/* ---------- Process (flow line) ---------- */
.process{ position: relative; }
.process-path-wrap{ position: relative; margin-top: 40px; }
.process-svg{ width: 100%; height: auto; display:block; }
.process-svg path{
  fill:none; stroke: url(#flowGrad); stroke-width: 2;
  stroke-dasharray: 1400; stroke-dashoffset: 1400;
  transition: stroke-dashoffset 1.6s var(--ease);
}
.process-svg path.drawn{ stroke-dashoffset: 0; }

.process-steps{
  display:grid; grid-template-columns: repeat(5,1fr); gap: 20px; margin-top: -40px;
}
@media (max-width: 980px){ .process-steps{ grid-template-columns: repeat(2,1fr); margin-top: 30px; } .process-path-wrap{ display:none; } }
@media (max-width: 520px){ .process-steps{ grid-template-columns: 1fr; } }

.step{
  opacity: 0; transform: translateY(24px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.step.in{ opacity:1; transform: translateY(0); }
.step .idx{
  font-family: var(--font-mono); font-size: 12px; color: var(--teal);
  width: 34px; height: 34px; border: 1px solid var(--teal); border-radius: 50%;
  display:flex; align-items:center; justify-content:center; margin-bottom: 18px; background: var(--bg);
}
.step h4{ font-size: 16.5px; margin-bottom: 8px; }
.step p{ font-size: 13.5px; color: var(--text-muted); }

/* ---------- Stats / Orb section ---------- */
.stats-section{ background: var(--bg-elevated); border-top:1px solid var(--line); border-bottom:1px solid var(--line); position:relative; overflow:hidden; }
.stats-layout{ display:grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items:center; }
@media (max-width: 900px){ .stats-layout{ grid-template-columns: 1fr; } }
.orb-canvas-wrap{ height: 380px; position:relative; }
#orb-canvas{ width:100%; height:100%; }
.stat-grid{ display:grid; grid-template-columns: 1fr 1fr; gap: 34px 28px; }
.stat b{
  font-family: var(--font-mono); font-size: clamp(30px,4vw,44px); color: var(--text);
  display:block; letter-spacing: -0.01em;
}
.stat b .suf{ color: var(--gold); }
.stat span{ font-size: 13.5px; color: var(--text-muted); display:block; margin-top: 6px; }

/* ---------- Testimonials ---------- */
.testi-grid{ display:grid; grid-template-columns: repeat(3,1fr); gap: 22px; }
@media (max-width: 900px){ .testi-grid{ grid-template-columns: 1fr; } }
.testi-card{
  border:1px solid var(--line); border-radius: var(--radius-m); padding: 30px;
  background: var(--bg-elevated);
}
.testi-card .quote{ font-size: 15.5px; color: var(--text); line-height: 1.65; }
.testi-card .who{ margin-top: 22px; display:flex; align-items:center; gap: 12px; }
.avatar{
  width: 38px; height: 38px; border-radius: 50%;
  background: var(--grad-flow); flex-shrink:0;
}
.who b{ display:block; font-size: 13.5px; }
.who span{ display:block; font-size: 12px; color: var(--text-faint); }

/* ---------- CTA band ---------- */
.cta-band{
  background: var(--bg-elevated-2);
  border-radius: var(--radius-l);
  padding: 72px 60px;
  margin: 0 32px;
  max-width: calc(var(--container) - 64px);
  margin-inline: auto;
  position: relative;
  overflow:hidden;
  border: 1px solid var(--line);
  text-align:center;
}
.cta-band h2{ font-size: clamp(28px,4vw,46px); max-width: 16ch; margin: 0 auto; }
.cta-band p{ color: var(--text-muted); margin-top: 16px; }
.cta-band .hero-actions{ justify-content:center; margin-top: 36px; }
.cta-glow{
  position:absolute; width: 520px; height: 520px; border-radius: 50%;
  background: radial-gradient(circle, rgba(22,232,196,0.16), transparent 70%);
  top:-220px; right: -160px; pointer-events:none;
}

@media (max-width: 700px){ .cta-band{ padding: 52px 26px; margin: 0 20px; } }

/* ---------- Footer ---------- */
.site-footer{ padding: 90px 0 40px; border-top: 1px solid var(--line); margin-top: 60px; }
.footer-top{
  display:grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px;
  padding-bottom: 56px;
}
@media (max-width: 900px){ .footer-top{ grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px){ .footer-top{ grid-template-columns: 1fr; } }
.footer-brand p{ color: var(--text-muted); font-size: 14px; margin-top: 16px; max-width: 280px; }
.footer-col h5{ font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-faint); margin-bottom: 18px; }
.footer-col li{ margin-bottom: 12px; }
.footer-col a{ font-size: 14px; color: var(--text-muted); transition: color .2s ease; }
.footer-col a:hover{ color: var(--teal); }
.footer-bottom{
  border-top: 1px solid var(--line); padding-top: 26px;
  display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap: 16px;
}
.footer-bottom small{ color: var(--text-faint); font-size: 12.5px; }
.social-row{ display:flex; gap: 14px; }
.social-row a{
  width: 34px; height:34px; border:1px solid var(--line); border-radius:50%;
  display:flex; align-items:center; justify-content:center; transition: border-color .2s ease, color .2s ease;
  color: var(--text-muted);
}
.social-row a:hover{ border-color: var(--teal); color: var(--teal); }
.social-row svg{ width:15px; height:15px; }

/* ---------- Reveal utility ---------- */
.reveal{ opacity:0; transform: translateY(28px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.in{ opacity:1; transform: translateY(0); }

/* ---------- Inner pages (Legal / Contact) ---------- */
.page-hero{ padding: 170px 0 60px; border-bottom: 1px solid var(--line); }
.page-hero h1{ font-size: clamp(32px,5vw,54px); }
.page-hero .updated{ margin-top: 18px; font-family: var(--font-mono); font-size: 13px; color: var(--text-faint); }

.legal{ padding: 70px 0 140px; }
.legal-layout{ display:grid; grid-template-columns: 260px 1fr; gap: 60px; align-items:start; }
@media (max-width: 860px){ .legal-layout{ grid-template-columns: 1fr; } .legal-toc{ display:none; } }
.legal-toc{ position: sticky; top: 120px; }
.legal-toc h5{ font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-faint); margin-bottom: 16px; }
.legal-toc li{ margin-bottom: 10px; }
.legal-toc a{ font-size: 13.5px; color: var(--text-muted); }
.legal-toc a:hover{ color: var(--teal); }
.legal-body h2{ font-size: 22px; margin-top: 52px; margin-bottom: 16px; scroll-margin-top: 110px; }
.legal-body h2:first-child{ margin-top: 0; }
.legal-body p, .legal-body li{ color: var(--text-muted); font-size: 15px; margin-bottom: 14px; }
.legal-body ul{ list-style: disc; padding-left: 22px; }
.legal-body strong{ color: var(--text); }
.legal-body a.inline-link{ color: var(--teal); border-bottom: 1px solid rgba(22,232,196,0.3); }
.legal-intro{ font-size: 16px; color: var(--text-muted); max-width: 68ch; margin-bottom: 20px; }

/* ---------- Contact page ---------- */
.contact-layout{ display:grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items:flex-start; }
@media (max-width: 900px){ .contact-layout{ grid-template-columns: 1fr; } }
.contact-info-card{
  border: 1px solid var(--line); border-radius: var(--radius-m); padding: 34px;
  background: var(--bg-elevated);
}
.contact-info-card .row{ display:flex; gap: 16px; padding: 18px 0; border-bottom: 1px solid var(--line-soft); }
.contact-info-card .row:last-child{ border-bottom:none; }
.contact-info-card .row .ic{ width: 38px; height:38px; border-radius:10px; background: rgba(22,232,196,0.1); border:1px solid rgba(22,232,196,0.25); display:flex; align-items:center; justify-content:center; flex-shrink:0; }
.contact-info-card .row .ic svg{ width:18px; height:18px; stroke: var(--teal); }
.contact-info-card .row h4{ font-size: 14px; margin-bottom: 4px; }
.contact-info-card .row p, .contact-info-card .row a{ font-size: 14px; color: var(--text-muted); }
.map-frame{ margin-top: 22px; border-radius: var(--radius-m); overflow:hidden; border:1px solid var(--line); height: 260px; }
.map-frame iframe{ width:100%; height:100%; border:0; filter: grayscale(0.4) invert(0.92) contrast(0.9); }

.form-card{ border:1px solid var(--line); border-radius: var(--radius-m); padding: 34px; background: var(--bg-elevated); }
.field{ margin-bottom: 20px; }
.field label{ display:block; font-family: var(--font-mono); font-size: 12px; letter-spacing:0.06em; text-transform:uppercase; color: var(--text-faint); margin-bottom: 8px; }
.field input, .field select, .field textarea{
  width: 100%; background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius-s);
  padding: 13px 14px; color: var(--text); font-family: var(--font-body); font-size: 14.5px;
  transition: border-color .2s ease;
}
.field input:focus, .field select:focus, .field textarea:focus{ border-color: var(--teal); outline:none; }
.field textarea{ resize: vertical; min-height: 120px; }
.form-note{ font-size: 12.5px; color: var(--text-faint); margin-top: 14px; }
.form-success{
  display:none; align-items:center; gap:10px; padding: 14px 16px; border-radius: var(--radius-s);
  background: rgba(22,232,196,0.1); border:1px solid rgba(22,232,196,0.3); color: var(--teal); font-size: 13.5px; margin-top: 18px;
}
.form-success.show{ display:flex; }

/* two-col grid for legal/contact rows on very small screens */
@media (max-width: 480px){
  .cta-band{ text-align:left; }
  .cta-band .hero-actions{ justify-content:flex-start; }
}