/* ===========================================================
   SmartBuild AI — Stylesheet
   Design concept: the construction "drawing sheet" —
   blueprint grid, title blocks, and a mono-set spec ledger,
   rendered in a clean modern SaaS language.
   =========================================================== */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root{
  --navy: #0E2A47;
  --navy-deep: #081B30;
  --navy-mid: #17385C;
  --paper: #F5F3EC;
  --paper-dim: #EBE8DE;
  --line: #D8D3C4;
  --ink: #16212B;
  --ink-soft: #4A5560;
  --steel: #E8622C;
  --steel-dark: #C74E1E;
  --ledger: #1F7A5C;
  --white: #FFFFFF;
  --blueprint-line: rgba(255,255,255,0.09);
  --blueprint-line-strong: rgba(255,255,255,0.16);

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

  --max-w: 1180px;
}

*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
img{ max-width:100%; display:block; }
a{ color: inherit; text-decoration: none; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{ font-family: var(--font-display); margin:0; line-height:1.1; letter-spacing:-0.01em; }
p{ margin:0; }

@media (prefers-reduced-motion: reduce){
  *{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

:focus-visible{
  outline: 2px solid var(--steel);
  outline-offset: 3px;
}

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

.eyebrow{
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--steel);
  display: flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before{
  content:"";
  width: 18px;
  height: 1px;
  background: var(--steel);
  display:inline-block;
}

/* ---------------- Buttons ---------------- */
.btn{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 13px 22px;
  border-radius: 3px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, background .15s ease, border-color .15s ease, color .15s ease;
}
.btn:hover{ transform: translateY(-1px); }
.btn-primary{
  background: var(--steel);
  color: var(--white);
}
.btn-primary:hover{ background: var(--steel-dark); }
.btn-ghost{
  background: transparent;
  border-color: rgba(255,255,255,0.35);
  color: var(--white);
}
.btn-ghost:hover{ border-color: rgba(255,255,255,0.7); }
.btn-outline{
  background: transparent;
  border-color: var(--ink);
  color: var(--ink);
}
.btn-outline:hover{ background: var(--ink); color: var(--white); }
.btn-block{ width:100%; justify-content:center; }

/* ---------------- Header / Nav ---------------- */
.site-header{
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(14,42,71,0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.nav{
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 32px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand{
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  color: var(--white);
}
.brand .logo-mark{
  width: 32px;
  height: 32px;
  border-radius: 7px;
  display: block;
  flex-shrink: 0;
}
.nav-links{
  display: flex;
  align-items: center;
  gap: 34px;
}
.nav-links a{
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.72);
  padding: 6px 0;
  border-bottom: 1px solid transparent;
  transition: color .15s ease, border-color .15s ease;
}
.nav-links a:hover, .nav-links a.active{
  color: var(--white);
  border-color: var(--steel);
}
.nav-cta{ display:flex; align-items:center; gap:18px; }
.nav-toggle{
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span{ width: 22px; height: 2px; background: var(--white); display:block; }

@media (max-width: 880px){
  .nav-links{
    position: absolute;
    top: 72px; left:0; right:0;
    background: var(--navy-deep);
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 32px 28px;
    gap: 18px;
    display: none;
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }
  .nav-links.open{ display:flex; }
  .nav-cta .btn-ghost{ display:none; }
  .nav-toggle{ display:flex; }
}

/* ---------------- Blueprint hero backdrop ---------------- */
.blueprint{
  position: relative;
  background: var(--navy);
  color: var(--white);
  overflow: hidden;
}
.blueprint::before{
  content:"";
  position:absolute; inset:0;
  background-image:
    linear-gradient(var(--blueprint-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--blueprint-line) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse 90% 80% at 50% 0%, black 40%, transparent 100%);
}
.blueprint::after{
  content:"";
  position:absolute; inset:0;
  background-image:
    linear-gradient(var(--blueprint-line-strong) 1px, transparent 1px),
    linear-gradient(90deg, var(--blueprint-line-strong) 1px, transparent 1px);
  background-size: 220px 220px;
  mask-image: radial-gradient(ellipse 90% 80% at 50% 0%, black 40%, transparent 100%);
}

/* ---------------- Page hero (interior pages) ---------------- */
.page-hero{
  padding: 76px 0 64px;
}
.page-hero .container{ position:relative; z-index:1; }
.page-hero h1{
  font-size: clamp(34px, 4.4vw, 52px);
  font-weight: 600;
  margin-top: 18px;
  max-width: 18ch;
}
.page-hero p.lede{
  margin-top: 18px;
  max-width: 58ch;
  font-size: 17px;
  color: rgba(255,255,255,0.78);
}

/* ---------------- Home hero ---------------- */
.hero{
  padding: 64px 0 0;
}
.hero-grid{
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 40px;
  align-items: start;
  padding-bottom: 60px;
}
.hero h1{
  font-size: clamp(36px, 4.6vw, 58px);
  font-weight: 600;
  margin-top: 20px;
  max-width: 16ch;
}
.hero h1 em{
  font-style: normal;
  color: var(--steel);
}
.hero .lede{
  margin-top: 20px;
  font-size: 17.5px;
  color: rgba(255,255,255,0.78);
  max-width: 52ch;
}
.hero-actions{
  margin-top: 32px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.hero-note{
  margin-top: 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.03em;
}

/* Title block, drafting-sheet style, styled like the corner
   stamp on a construction drawing */
.title-block{
  margin-top: 44px;
  border-top: 1px solid rgba(255,255,255,0.18);
  padding-top: 16px;
  display: grid;
  grid-template-columns: repeat(4, auto);
  gap: 28px;
  max-width: 620px;
}
.title-block div{ font-family: var(--font-mono); }
.title-block .k{
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.42);
}
.title-block .v{
  font-size: 13px;
  color: rgba(255,255,255,0.86);
  margin-top: 4px;
}

/* Ledger card — the signature element: a live-looking
   Bill of Materials readout */
.ledger-card{
  background: var(--paper);
  color: var(--ink);
  border-radius: 6px;
  box-shadow: 0 30px 60px -20px rgba(0,0,0,0.45);
  transform: rotate(1.2deg);
  overflow: hidden;
  border: 1px solid rgba(0,0,0,0.06);
}
.ledger-head{
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  background: var(--navy-deep);
  color: var(--white);
}
.ledger-head span{
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.65);
}
.ledger-dots{ display:flex; gap:6px; }
.ledger-dots i{ width:7px; height:7px; border-radius:50%; background: rgba(255,255,255,0.35); display:block; }
.ledger-table{
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 12.5px;
}
.ledger-table th{
  text-align: left;
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  background: var(--paper-dim);
}
.ledger-table td{
  padding: 11px 14px;
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}
.ledger-table tr:last-child td{ border-bottom:none; }
.tag{
  display:inline-block;
  padding: 2px 7px;
  border-radius: 3px;
  font-size: 10.5px;
}
.tag-green{ background: rgba(31,122,92,0.12); color: var(--ledger); }
.tag-amber{ background: rgba(232,98,45,0.12); color: var(--steel-dark); }
.ledger-foot{
  display:flex;
  justify-content: space-between;
  padding: 12px 18px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--ink-soft);
  border-top: 1px dashed var(--line);
}
.ledger-foot b{ color: var(--ink); }

/* Stat strip */
.stat-strip{
  border-top: 1px solid rgba(255,255,255,0.1);
  position: relative;
  z-index: 1;
}
.stat-strip .container{
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}
.stat{
  padding: 26px 28px;
  border-left: 1px solid rgba(255,255,255,0.1);
}
.stat:first-child{ border-left: none; padding-left: 0; }
.stat .num{
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 600;
  color: var(--white);
}
.stat .lbl{
  margin-top: 4px;
  font-size: 12.5px;
  color: rgba(255,255,255,0.6);
}

@media (max-width: 900px){
  .hero-grid{ grid-template-columns: 1fr; }
  .title-block{ grid-template-columns: repeat(2, auto); }
  .stat-strip .container{ grid-template-columns: repeat(2,1fr); row-gap: 22px; }
  .stat{ border-left:none !important; padding-left:0 !important; }
}

/* ---------------- Sections ---------------- */
section{ padding: 88px 0; }
.section-head{
  max-width: 640px;
  margin-bottom: 48px;
}
.section-head h2{
  font-size: clamp(26px, 3vw, 36px);
  font-weight: 600;
  margin-top: 14px;
}
.section-head p{
  margin-top: 14px;
  color: var(--ink-soft);
  font-size: 16px;
}
.section-alt{ background: var(--white); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-navy{ background: var(--navy); color: var(--white); }
.section-navy .section-head p{ color: rgba(255,255,255,0.72); }

/* Problem list */
.problem-grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.problem-card{
  background: var(--paper);
  padding: 30px 26px;
}
.problem-card .num{
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--steel);
  letter-spacing: 0.06em;
}
.problem-card h3{
  font-size: 18px;
  font-weight: 600;
  margin-top: 14px;
}
.problem-card p{
  margin-top: 10px;
  font-size: 14.5px;
  color: var(--ink-soft);
}

/* How it works — process */
.process{
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}
.step{
  position: relative;
  padding-top: 20px;
  border-top: 2px solid var(--ink);
}
.step .step-num{
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--steel);
}
.step h3{
  font-size: 17px;
  font-weight: 600;
  margin-top: 12px;
}
.step p{
  margin-top: 8px;
  font-size: 14.5px;
  color: var(--ink-soft);
}

@media (max-width: 900px){
  .problem-grid{ grid-template-columns: 1fr; }
  .process{ grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px){
  .process{ grid-template-columns: 1fr; }
}

/* Feature grid */
.feature-grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.feature-card{
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 28px 26px;
  transition: transform .18s ease, box-shadow .18s ease;
}
.feature-card:hover{
  transform: translateY(-3px);
  box-shadow: 0 20px 40px -24px rgba(14,42,71,0.35);
}
.feature-icon{
  width: 42px; height: 42px;
  border-radius: 6px;
  background: var(--navy);
  display: grid;
  place-items: center;
  color: var(--steel);
}
.feature-card h3{
  font-size: 17px;
  font-weight: 600;
  margin-top: 18px;
}
.feature-card p{
  margin-top: 9px;
  font-size: 14.5px;
  color: var(--ink-soft);
}
@media (max-width: 900px){ .feature-grid{ grid-template-columns: repeat(2,1fr); } }
@media (max-width: 600px){ .feature-grid{ grid-template-columns: 1fr; } }

/* USP split */
.usp-wrap{ display:grid; grid-template-columns: 0.9fr 1.1fr; gap: 56px; align-items:center; }
.usp-list{ display:flex; flex-direction:column; gap: 26px; }
.usp-item{ display:flex; gap:16px; }
.usp-item .dot{
  width: 8px; height: 8px; border-radius:50%;
  background: var(--steel); margin-top: 8px; flex-shrink:0;
}
.usp-item h3{ font-size:16.5px; font-weight:600; }
.usp-item p{ margin-top:6px; font-size:14.5px; color: var(--ink-soft); }

.compare-card{
  background: var(--navy-deep);
  color: var(--white);
  border-radius: 8px;
  padding: 30px;
}
.compare-row{
  display: flex;
  justify-content: space-between;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  font-size: 14px;
}
.compare-row:last-child{ border-bottom:none; }
.compare-row .other{ color: rgba(255,255,255,0.4); }
.compare-row .ours{ color: var(--steel); font-family: var(--font-mono); font-size: 12.5px; }

@media (max-width: 900px){ .usp-wrap{ grid-template-columns: 1fr; } }

/* CTA banner */
.cta-banner{
  background: var(--steel);
  color: var(--white);
  padding: 64px 0;
}
.cta-banner .container{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.cta-banner h2{ font-size: clamp(24px, 3vw, 32px); font-weight:600; max-width: 22ch; }
.cta-banner p{ margin-top:8px; color: rgba(255,255,255,0.85); }
.cta-banner .btn-outline{ border-color: var(--white); color: var(--white); }
.cta-banner .btn-outline:hover{ background: var(--white); color: var(--steel-dark); }

/* Pricing */
.pricing-grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}
.price-card{
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
}
.price-card.featured{
  border-color: var(--navy);
  box-shadow: 0 24px 50px -28px rgba(14,42,71,0.4);
  position: relative;
}
.price-card.featured::before{
  content: "Most popular";
  position: absolute;
  top: -12px; left: 28px;
  background: var(--steel);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 5px 10px;
  border-radius: 3px;
}
.price-card .plan{ font-family: var(--font-mono); font-size: 12px; letter-spacing:0.08em; text-transform:uppercase; color: var(--steel); }
.price-card .amount{ font-family: var(--font-display); font-size: 40px; font-weight:700; margin-top:12px; }
.price-card .amount span{ font-size: 15px; font-weight:500; color: var(--ink-soft); font-family: var(--font-body); }
.price-card .desc{ margin-top: 10px; font-size: 14px; color: var(--ink-soft); }
.price-features{ margin-top: 24px; display:flex; flex-direction:column; gap:12px; flex-grow:1; }
.price-features li{ display:flex; gap:10px; font-size: 14px; align-items:flex-start; }
.price-features li::before{ content:"—"; color: var(--steel); flex-shrink:0; }
.price-card .btn{ margin-top: 26px; }

.pricing-faq{
  margin-top: 70px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px 48px;
}
.faq-item h3{ font-size: 15.5px; font-weight:600; }
.faq-item p{ margin-top: 8px; font-size: 14.5px; color: var(--ink-soft); }

@media (max-width: 900px){ .pricing-grid{ grid-template-columns: 1fr; } .pricing-faq{ grid-template-columns: 1fr; } }

/* About */
.about-grid{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}
.value-list{ display:grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-top: 10px; }
.value-item{ border-top: 2px solid var(--ink); padding-top: 14px; }
.value-item h3{ font-size: 15.5px; font-weight:600; }
.value-item p{ margin-top:7px; font-size: 13.5px; color: var(--ink-soft); }

.market-panel{
  background: var(--navy-deep);
  color: var(--white);
  border-radius: 8px;
  padding: 30px;
}
.market-panel .eyebrow{ margin-bottom: 6px; }
.market-panel .fig{
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 700;
  color: var(--white);
  margin-top: 18px;
}
.market-panel .fig-lbl{ font-size: 13px; color: rgba(255,255,255,0.62); margin-top: 4px; }
.market-panel .divider{ height:1px; background: rgba(255,255,255,0.12); margin: 20px 0; }

@media (max-width: 900px){ .about-grid{ grid-template-columns:1fr; } .value-list{ grid-template-columns: 1fr 1fr; } }

/* Timeline (about / roadmap) */
.roadmap{ position: relative; padding-left: 26px; border-left: 1px solid var(--line); display:flex; flex-direction:column; gap:34px; }
.road-item{ position:relative; }
.road-item::before{
  content:"";
  position:absolute; left:-31px; top:3px;
  width:9px; height:9px; border-radius:50%;
  background: var(--steel);
  border: 2px solid var(--paper);
  box-shadow: 0 0 0 1px var(--steel);
}
.road-item .when{ font-family: var(--font-mono); font-size:11.5px; letter-spacing:0.06em; text-transform:uppercase; color: var(--steel); }
.road-item h3{ font-size: 16px; font-weight:600; margin-top:6px; }
.road-item p{ margin-top:6px; font-size:14px; color: var(--ink-soft); max-width: 60ch; }

/* Contact */
.contact-grid{
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 56px;
}
.contact-info-card{
  background: var(--navy-deep);
  color: var(--white);
  border-radius: 8px;
  padding: 32px;
}
.contact-info-card h3{ font-size: 17px; font-weight:600; }
.contact-line{ margin-top: 22px; }
.contact-line .k{ font-family: var(--font-mono); font-size: 10.5px; letter-spacing:0.08em; text-transform:uppercase; color: rgba(255,255,255,0.5); }
.contact-line .v{ margin-top:4px; font-size:15px; }
.contact-line .v a:hover{ color: var(--steel); }
.social-row{ display:flex; gap:14px; margin-top: 28px; }
.social-row a{
  width: 36px; height:36px; border-radius:50%;
  border: 1px solid rgba(255,255,255,0.25);
  display:grid; place-items:center;
  transition: border-color .15s ease, background .15s ease;
}
.social-row a:hover{ border-color: var(--steel); background: rgba(232,98,45,0.12); }

.form-card{
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 34px;
}
.form-row{ display:grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field{ margin-bottom: 18px; display:flex; flex-direction:column; gap:8px; }
.field label{ font-family: var(--font-mono); font-size: 11px; letter-spacing:0.06em; text-transform:uppercase; color: var(--ink-soft); }
.field input, .field select, .field textarea{
  font-family: var(--font-body);
  font-size: 14.5px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--paper);
  color: var(--ink);
}
.field input:focus, .field select:focus, .field textarea:focus{
  outline: none;
  border-color: var(--navy);
  background: var(--white);
}
.field textarea{ resize: vertical; min-height: 120px; }
.form-note{ margin-top: 4px; font-size: 12.5px; color: var(--ink-soft); }

@media (max-width: 900px){ .contact-grid{ grid-template-columns:1fr; } .form-row{ grid-template-columns:1fr; } }

/* Footer */
.site-footer{
  background: var(--navy-deep);
  color: rgba(255,255,255,0.7);
  padding: 60px 0 28px;
}
.footer-grid{
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 40px;
}
.footer-brand .brand{ margin-bottom: 14px; }
.footer-brand p{ font-size: 13.5px; color: rgba(255,255,255,0.55); max-width: 34ch; }
.footer-col h4{
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.45);
  margin-bottom: 16px;
}
.footer-col ul{ display:flex; flex-direction:column; gap:11px; }
.footer-col a{ font-size: 14px; color: rgba(255,255,255,0.75); transition: color .15s ease; }
.footer-col a:hover{ color: var(--steel); }
.footer-bottom{
  margin-top: 50px;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 12.5px;
  color: rgba(255,255,255,0.4);
  font-family: var(--font-mono);
}
@media (max-width: 900px){ .footer-grid{ grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px){ .footer-grid{ grid-template-columns: 1fr; } }

/* Reveal-on-scroll utility */
.reveal{ opacity:0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in{ opacity:1; transform: translateY(0); }

/* Small badges used across pages */
.badge{
  display:inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 3px;
  border: 1px solid var(--line);
  color: var(--ink-soft);
}