/* =============================================================
   QUANTIX ENGINEERS — core stylesheet
   Design language: technical / blueprint. Navy + slate from the
   mark, a muted drafting-gold used sparingly for action points,
   thin rule lines and corner brackets standing in for the
   drawing-set aesthetic of an estimating firm.
   ============================================================= */

:root{
  --navy-900:#0E1A30;
  --navy-800:#132345;
  --navy-700:#1B3564;
  --navy-600:#25467F;
  --slate-600:#586173;
  --slate-400:#8890A0;
  --slate-200:#DDE1E8;
  --slate-100:#EEF0F4;
  --paper:#F6F7F9;
  --white:#FFFFFF;
  --gold-600:#B4863A;
  --gold-700:#93691F;
  --ok:#2F7A4F;

  --font-head:"Space Grotesk", "Segoe UI", sans-serif;
  --font-body:"Inter", "Segoe UI", sans-serif;
  --font-mono:"JetBrains Mono", "Courier New", monospace;

  --max-w:1180px;
  --radius:2px;
  --line:1px solid var(--slate-200);
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--navy-900);
  background:var(--white);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{list-style:none;margin:0;padding:0;}
h1,h2,h3,h4{
  font-family:var(--font-head);
  color:var(--navy-900);
  margin:0 0 .5em;
  line-height:1.15;
  font-weight:600;
  letter-spacing:-.01em;
}
p{margin:0 0 1em;color:var(--slate-600);}
.container{max-width:var(--max-w);margin:0 auto;padding:0 24px;}
section{padding:88px 0;}
@media(max-width:720px){section{padding:56px 0;}}

:focus-visible{outline:2px solid var(--gold-600);outline-offset:3px;}
@media (prefers-reduced-motion: reduce){
  *{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important;scroll-behavior:auto !important;}
}

/* ---------- eyebrow / kicker ---------- */
.kicker{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);
  font-size:.75rem;
  color:var(--navy-700);
  margin-bottom:14px;
}
.kicker::before{content:"";width:22px;height:1px;background:var(--gold-600);display:inline-block;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;
  font-family:var(--font-body);
  font-weight:600;
  font-size:.95rem;
  border-radius:var(--radius);
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color .18s ease, color .18s ease, border-color .18s ease;
}
.btn-primary{background:var(--navy-800);color:var(--white);}
.btn-primary:hover{background:var(--navy-700);}
.btn-gold{background:var(--gold-600);color:var(--white);}
.btn-gold:hover{background:var(--gold-700);}
.btn-outline{background:transparent;color:var(--navy-800);border-color:var(--navy-800);}
.btn-outline:hover{background:var(--navy-800);color:var(--white);}
.btn-outline-light{background:transparent;color:var(--white);border-color:rgba(255,255,255,.5);}
.btn-outline-light:hover{background:var(--white);color:var(--navy-900);}
.btn-block{width:100%;}

/* =============================================================
   HEADER  (deliberately NOT sticky/fixed — scrolls with page)
   ============================================================= */
.site-header{
  position:static;
  border-bottom:var(--line);
  background:var(--white);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  padding:12px 24px;
  max-width:var(--max-w);margin:0 auto;
}
.brand{display:flex;align-items:center;gap:12px;}
.brand img{height:76px;width:auto;}

.main-nav ul{display:flex;align-items:center;gap:34px;}
.main-nav a{
  font-size:.92rem;font-weight:500;color:var(--navy-800);
  padding:6px 2px;border-bottom:2px solid transparent;
  transition:border-color .15s ease, color .15s ease;
}
.main-nav a:hover,.main-nav a.active{border-color:var(--gold-600);}

.header-actions{display:flex;align-items:center;gap:22px;}
.header-phone{
  font-family:var(--font-mono);font-size:.88rem;color:var(--navy-800);
  display:flex;align-items:center;gap:8px;
}
.header-phone svg{width:16px;height:16px;flex:none;color:var(--gold-600);}

.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:40px;height:40px;border:1px solid var(--slate-200);background:none;
  cursor:pointer;border-radius:var(--radius);
}
.nav-toggle span{display:block;height:2px;background:var(--navy-800);border-radius:2px;}

@media(max-width:900px){
  .header-phone{display:none;}
  .brand img{height:56px;}
  .main-nav{
    position:absolute;left:0;right:0;top:100%;
    background:var(--white);border-bottom:var(--line);
    max-height:0;overflow:hidden;transition:max-height .25s ease;
  }
  .main-nav.open{max-height:520px;}
  .main-nav ul{flex-direction:column;align-items:flex-start;gap:0;padding:8px 24px 18px;}
  .main-nav li{width:100%;}
  .main-nav a{display:block;padding:12px 0;border-bottom:1px solid var(--slate-100);width:100%;}
  .site-header{position:relative;z-index:50;}
  .nav-toggle{display:flex;}
}
@media(max-width:480px){
  .brand img{height:44px;}
  .header-actions{gap:12px;}
  .header-actions .btn{padding:10px 14px;font-size:.85rem;}
}

/* =============================================================
   HERO
   ============================================================= */
.hero{
  background:var(--navy-900);
  color:var(--white);
  position:relative;
  overflow:hidden;
  padding:96px 0;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size:44px 44px;
  mask-image:linear-gradient(180deg, transparent, rgba(0,0,0,.9) 40%, transparent 95%);
}
.hero .container{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:60px;align-items:center;}
.hero h1{color:var(--white);font-size:clamp(2.1rem,4vw,3.1rem);max-width:16ch;}
.hero p.lead{color:var(--slate-200);font-size:1.08rem;max-width:46ch;}
.hero-ctas{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px;}

.hero-panel{
  border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.04);
  padding:28px;border-radius:var(--radius);
}
.hero-panel .stat-row{display:flex;justify-content:space-between;padding:14px 0;border-bottom:1px solid rgba(255,255,255,.12);}
.hero-panel .stat-row:last-child{border-bottom:none;}
.hero-panel .stat-num{font-family:var(--font-mono);font-size:1.4rem;color:var(--white);}
.hero-panel .stat-label{font-size:.82rem;color:var(--slate-400);max-width:16ch;text-align:right;}

@media(max-width:900px){
  .hero .container{grid-template-columns:1fr;}
  .hero-panel .stat-label{text-align:left;}
}

/* trust strip */
.trust-strip{border-bottom:var(--line);background:var(--paper);}
.trust-strip .container{
  display:flex;flex-wrap:wrap;gap:28px;justify-content:space-between;
  padding:22px 24px;font-family:var(--font-mono);font-size:.78rem;color:var(--slate-600);
}

/* =============================================================
   SECTION HEADS
   ============================================================= */
.section-head{max-width:640px;margin-bottom:48px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head h2{font-size:clamp(1.6rem,3vw,2.2rem);}

/* =============================================================
   SERVICE / FEATURE CARDS
   ============================================================= */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--slate-200);border:1px solid var(--slate-200);}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--slate-200);border:1px solid var(--slate-200);}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--slate-200);border:1px solid var(--slate-200);}

.card{background:var(--white);padding:34px 30px;position:relative;}
.card .num{font-family:var(--font-mono);font-size:.78rem;color:var(--gold-600);margin-bottom:16px;display:block;}
.card h3{font-size:1.08rem;margin-bottom:10px;}
.card p{font-size:.93rem;margin-bottom:0;}
.card-icon{width:38px;height:38px;color:var(--navy-700);margin-bottom:18px;}

@media(max-width:900px){.grid-3,.grid-4{grid-template-columns:repeat(2,1fr);}}
@media(max-width:560px){.grid-3,.grid-4,.grid-2{grid-template-columns:1fr;}}

/* service link card (services index) */
.service-link-card{display:flex;flex-direction:column;height:100%;}
.service-link-card .more{
  margin-top:auto;font-family:var(--font-mono);font-size:.78rem;color:var(--navy-700);
  display:inline-flex;align-items:center;gap:6px;padding-top:14px;
}

/* =============================================================
   PROCESS / STEPS
   ============================================================= */
.process-list{border-top:var(--line);}
.process-item{
  display:grid;grid-template-columns:90px 1fr 1fr;gap:24px;
  padding:30px 0;border-bottom:var(--line);align-items:start;
}
.process-item .step-index{font-family:var(--font-mono);color:var(--gold-600);font-size:1.6rem;}
.process-item h3{margin-bottom:6px;font-size:1.05rem;}
.process-item p{margin:0;font-size:.93rem;}
@media(max-width:720px){
  .process-item{grid-template-columns:50px 1fr;}
  .process-item p{grid-column:2;}
}

/* ---------- service detail rows (services page) ---------- */
.service-detail{
  display:grid;grid-template-columns:300px 1fr;gap:48px;
  padding:48px 0;border-bottom:var(--line);scroll-margin-top:24px;
}
.service-detail:first-child{border-top:var(--line);}
.service-detail .service-icon{width:40px;height:40px;color:var(--gold-600);margin-bottom:16px;}
.service-detail h3{font-size:1.3rem;margin-bottom:10px;}
.service-detail .service-checklist{display:grid;grid-template-columns:1fr 1fr;gap:0 32px;margin-top:18px;}
.service-detail .service-checklist li{
  display:flex;gap:10px;padding:8px 0;font-size:.9rem;color:var(--navy-900);
}
.service-detail .service-checklist svg{flex:none;width:16px;height:16px;color:var(--ok);margin-top:3px;}
@media(max-width:800px){
  .service-detail{grid-template-columns:1fr;gap:16px;}
  .service-detail .service-checklist{grid-template-columns:1fr;}
}

/* =============================================================
   SPLIT SECTION (image/panel + text)
   ============================================================= */
.split{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;}
@media(max-width:900px){.split{grid-template-columns:1fr;gap:36px;}}
.blueprint-panel{
  background:var(--navy-900);color:var(--white);
  border-radius:var(--radius);padding:36px;position:relative;overflow:hidden;
}
.blueprint-panel::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px);
  background-size:28px 28px;
}
.blueprint-panel > *{position:relative;}
.blueprint-panel .row{display:flex;justify-content:space-between;padding:12px 0;border-bottom:1px solid rgba(255,255,255,.12);font-size:.9rem;}
.blueprint-panel .row span:first-child{color:var(--slate-400);}
.blueprint-panel .row span:last-child{font-family:var(--font-mono);}

.check-list li{
  display:flex;gap:12px;padding:10px 0;border-bottom:1px solid var(--slate-100);
  font-size:.95rem;color:var(--navy-900);
}
.check-list li svg{flex:none;width:18px;height:18px;color:var(--ok);margin-top:2px;}

/* =============================================================
   STATS BAND
   ============================================================= */
.stats-band{background:var(--navy-900);color:var(--white);}
.stats-band .grid-4{border:none;background:none;gap:1px;}
.stats-band .card{background:var(--navy-900);border-right:1px solid rgba(255,255,255,.12);padding:20px 24px;}
.stats-band .card:last-child{border-right:none;}
.stats-band .stat-num{font-family:var(--font-mono);font-size:2rem;color:var(--white);}
.stats-band .stat-label{color:var(--slate-400);font-size:.85rem;margin-top:6px;}

/* =============================================================
   TESTIMONIALS
   ============================================================= */
.testimonial-card{padding:34px 30px;}
.testimonial-card .quote{font-size:1.02rem;color:var(--navy-900);margin-bottom:20px;}
.testimonial-card .who{font-size:.85rem;color:var(--slate-600);font-family:var(--font-mono);}

/* =============================================================
   PRICING-ish / CTA band
   ============================================================= */
.cta-band{
  background:var(--gold-600);color:var(--white);
  padding:56px 0;
}
.cta-band .container{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap;}
.cta-band h2{color:var(--white);margin-bottom:6px;font-size:1.6rem;}
.cta-band p{color:rgba(255,255,255,.9);margin:0;}

/* =============================================================
   FORMS
   ============================================================= */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.form-grid .full{grid-column:1 / -1;}
@media(max-width:640px){.form-grid{grid-template-columns:1fr;}}

label{display:block;font-size:.83rem;font-weight:600;color:var(--navy-800);margin-bottom:6px;}
input,select,textarea{
  width:100%;padding:12px 14px;border:1px solid var(--slate-200);border-radius:var(--radius);
  font-family:var(--font-body);font-size:.95rem;color:var(--navy-900);background:var(--white);
}
input:focus,select:focus,textarea:focus{border-color:var(--navy-700);outline:none;}
textarea{resize:vertical;min-height:120px;}
.form-note{font-size:.78rem;color:var(--slate-400);margin-top:6px;}
.form-success{
  display:none;border:1px solid var(--ok);background:#F1F8F3;color:var(--ok);
  padding:14px 16px;border-radius:var(--radius);font-size:.9rem;margin-top:18px;
}
.form-success.visible{display:block;}
.form-error{
  display:none;border:1px solid #B4453A;background:#FBEFEE;color:#B4453A;
  padding:14px 16px;border-radius:var(--radius);font-size:.9rem;margin-top:18px;
}
.form-error.visible{display:block;}

/* =============================================================
   FOOTER
   ============================================================= */
.site-footer{background:var(--navy-900);color:var(--slate-400);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.1);}
.footer-grid h4{color:var(--white);font-size:.85rem;font-family:var(--font-mono);margin-bottom:16px;letter-spacing:.02em;}
.footer-grid a{display:block;padding:6px 0;font-size:.9rem;color:var(--slate-400);transition:color .15s ease;}
.footer-grid a:hover{color:var(--white);}
.footer-brand .footer-name{
  font-family:var(--font-head);font-weight:600;font-size:1.3rem;color:var(--white);
  margin:0 0 16px;letter-spacing:-.01em;
}
.footer-brand p{font-size:.88rem;max-width:34ch;}
.footer-brand .tag{color:var(--slate-200);border-color:rgba(255,255,255,.25);}
.footer-bottom{
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  padding:22px 0;font-size:.8rem;color:var(--slate-400);
}
@media(max-width:900px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media(max-width:560px){.footer-grid{grid-template-columns:1fr;}}

/* =============================================================
   PAGE HEADER (interior pages)
   ============================================================= */
.page-header{background:var(--navy-900);color:var(--white);padding:64px 0 54px;position:relative;overflow:hidden;}
.page-header::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size:40px 40px;
}
.page-header .container{position:relative;}
.breadcrumb{font-family:var(--font-mono);font-size:.78rem;color:var(--slate-400);margin-bottom:14px;}
.breadcrumb a{color:var(--slate-400);}
.breadcrumb a:hover{color:var(--white);}
.page-header h1{color:var(--white);margin-bottom:10px;font-size:clamp(1.8rem,3.4vw,2.6rem);}
.page-header p{color:var(--slate-200);max-width:56ch;margin:0;}

/* =============================================================
   LEGAL / TEXT PAGES
   ============================================================= */
.legal-body{max-width:780px;}
.legal-body h2{font-size:1.25rem;margin-top:2.2em;}
.legal-body h2:first-child{margin-top:0;}
.legal-body p,.legal-body li{color:var(--slate-600);font-size:.97rem;}
.legal-body ul{margin:0 0 1em;padding-left:1.2em;list-style:disc;}
.legal-body li{margin-bottom:.4em;}
.legal-meta{font-family:var(--font-mono);font-size:.8rem;color:var(--slate-400);margin-bottom:36px;}
.legal-toc{border:var(--line);padding:22px 24px;border-radius:var(--radius);margin-bottom:40px;background:var(--paper);}
.legal-toc h4{font-family:var(--font-mono);font-size:.78rem;text-transform:none;margin-bottom:12px;color:var(--navy-800);}
.legal-toc ol{padding-left:1.1em;list-style:decimal;}
.legal-toc li{padding:4px 0;font-size:.88rem;}
.legal-toc a{color:var(--navy-700);}
.legal-toc a:hover{text-decoration:underline;}

/* =============================================================
   FAQ ACCORDION
   ============================================================= */
.faq-item{border-bottom:var(--line);}
.faq-q{
  width:100%;text-align:left;background:none;border:none;cursor:pointer;
  display:flex;justify-content:space-between;align-items:center;gap:20px;
  padding:22px 4px;font-family:var(--font-head);font-size:1.02rem;color:var(--navy-900);font-weight:600;
}
.faq-q .plus{flex:none;width:22px;height:22px;position:relative;}
.faq-q .plus::before,.faq-q .plus::after{content:"";position:absolute;background:var(--navy-800);transition:transform .2s ease;}
.faq-q .plus::before{left:0;top:50%;width:100%;height:2px;transform:translateY(-50%);}
.faq-q .plus::after{top:0;left:50%;width:2px;height:100%;transform:translateX(-50%);}
.faq-item.open .plus::after{transform:translateX(-50%) rotate(90deg);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease;}
.faq-a p{padding:0 4px 22px;margin:0;font-size:.93rem;max-width:70ch;}

/* =============================================================
   PORTFOLIO / CASE STUDIES
   ============================================================= */
.case-card{background:var(--white);}
.case-card .case-media{
  height:190px;background:var(--navy-800);position:relative;overflow:hidden;
  display:flex;align-items:flex-end;padding:18px;
}
.case-card .case-media::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px);
  background-size:24px 24px;
}
.case-card .case-tag{
  position:relative;font-family:var(--font-mono);font-size:.72rem;color:var(--white);
  border:1px solid rgba(255,255,255,.4);padding:4px 10px;border-radius:20px;
}
.case-card .case-body{padding:26px 28px 30px;}
.case-card h3{font-size:1.05rem;margin-bottom:8px;}
.case-meta{display:flex;gap:18px;font-family:var(--font-mono);font-size:.76rem;color:var(--slate-400);margin-top:16px;padding-top:16px;border-top:1px solid var(--slate-100);}

/* =============================================================
   TEAM / VALUES (about page)
   ============================================================= */
.value-card .card-icon{color:var(--gold-600);}

/* =============================================================
   MISC UTILITIES
   ============================================================= */
.text-center{text-align:center;}
.mt-0{margin-top:0;}
.small{font-size:.85rem;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  font-family:var(--font-mono);font-size:.76rem;color:var(--navy-700);
  border:1px solid var(--slate-200);padding:6px 12px;border-radius:20px;
}