/* ==========================================================================
   Z&M Group — site styles
   One typeface (Manrope). Brand tokens only. Charcoal + off-white carry the
   page; blue is an accent. See CLAUDE.md for the rules behind these choices.
   ========================================================================== */

:root{
  --ink:#16181D;        /* anchor: headings, footer, logo Z */
  --blue:#1466B5;       /* accent: links, CTAs, proof numbers */
  --bright:#2E9BE0;     /* hover / small emphasis */
  --wash:#DCEEFA;       /* pale blue section + motif */
  --body:#5B6168;       /* body text */
  --muted:#9AA3AD;      /* labels, captions */
  --line:#E6E9ED;       /* hairlines, surfaces */
  --bg:#FAFBFC;         /* page background */
  --error:#A4163A;      /* functional state only: invalid form feedback (cool deep crimson, AA/AAA on --bg; not a brand color) */
  --maxw:1180px;
  --pad:clamp(20px,5vw,64px);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Manrope',system-ui,-apple-system,sans-serif;
  background:var(--bg);color:var(--body);line-height:1.6;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 var(--pad)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);border:0}

/* ---------- LOGO ---------- */
.logo{display:flex;align-items:center;gap:14px}
.logo img{height:34px;width:auto;flex:none}
.logo .word{display:flex;flex-direction:column;line-height:.98}
.logo .word span{font-size:9px;font-weight:700;letter-spacing:.22em;color:var(--muted);text-transform:uppercase}
.nav .logo .word span{font-size:13px;letter-spacing:.2em}
.logo .word span.b{color:var(--ink)}

/* ---------- HEADER / NAV ---------- */
header{position:sticky;top:0;z-index:50;background:rgba(250,251,252,.82);
  backdrop-filter:saturate(150%) blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.nav-links{display:flex;align-items:center;gap:30px;list-style:none}
.nav-links a{font-size:14.5px;font-weight:600;color:var(--ink);position:relative;padding:6px 0;transition:color .2s}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--blue);transition:width .25s ease}
.nav-links a:hover{color:var(--blue)}
.nav-links a:hover::after,.nav-links a[aria-current="page"]::after{width:100%}
.nav-links a[aria-current="page"]{color:var(--blue)}
.cta{display:inline-flex;align-items:center;gap:8px;background:var(--ink);color:#fff;font-weight:600;font-size:14.5px;
  padding:11px 20px;border-radius:999px;transition:background .2s,transform .2s}
.cta:hover{background:var(--blue);transform:translateY(-1px)}
.cta svg{width:15px;height:15px}
.burger{display:none;background:none;border:0;cursor:pointer;padding:8px;z-index:60}
.burger span{display:block;width:22px;height:2px;background:var(--ink);margin:5px 0;transition:.3s}
.mobile-menu{display:none;flex-direction:column;gap:4px;padding:12px var(--pad) 24px;border-bottom:1px solid var(--line);background:var(--bg)}
.mobile-menu a{font-size:17px;font-weight:600;color:var(--ink);padding:12px 0;border-bottom:1px solid var(--line)}
.mobile-menu a[aria-current="page"]{color:var(--blue)}
.mobile-menu .cta{margin-top:16px;justify-content:center;color:#fff}
body.nav-open .mobile-menu{display:flex}
body.nav-open .burger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
body.nav-open .burger span:nth-child(2){opacity:0}
body.nav-open .burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- BUTTONS ---------- */
.btn-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.btn-primary{display:inline-flex;align-items:center;gap:9px;background:var(--blue);color:#fff;font-weight:700;font-size:16px;
  padding:15px 28px;border-radius:999px;transition:background .2s,transform .2s,box-shadow .2s;
  box-shadow:0 8px 24px -10px rgba(20,102,181,.55);cursor:pointer;border:0}
.btn-primary:hover{background:#0f57a0;transform:translateY(-2px)}
.btn-primary svg{width:17px;height:17px;transition:transform .2s}
.btn-primary:hover svg{transform:translateX(3px)}
.btn-ghost{font-weight:600;font-size:16px;color:var(--ink);display:inline-flex;align-items:center;gap:8px}
.btn-ghost:hover{color:var(--blue)}

/* ---------- CAPSULE MOTIF (logo geometry as atmosphere) ---------- */
.blob{position:absolute;border-radius:999px;z-index:0;pointer-events:none}
.blob-blue{width:clamp(170px,26vw,330px);height:clamp(440px,64vw,780px);background:var(--wash);left:-5%;bottom:-24%;transform:rotate(-20deg)}
.blob-grey{width:clamp(140px,19vw,250px);height:clamp(460px,60vw,800px);background:var(--line);left:7%;bottom:-30%;transform:rotate(-56deg);opacity:.6}

/* ---------- HERO (home) ---------- */
.hero{position:relative;overflow:hidden;padding:clamp(64px,11vw,128px) 0 clamp(56px,8vw,96px)}
.hero .wrap{position:relative;z-index:1;max-width:880px}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:12.5px;font-weight:700;letter-spacing:.16em;
  text-transform:uppercase;color:var(--blue);margin-bottom:24px}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--blue)}
h1{font-size:clamp(40px,6.6vw,76px);font-weight:800;line-height:1.02;letter-spacing:-.028em;color:var(--ink);margin-bottom:26px}
.hero p.lede{font-size:clamp(17px,2.1vw,21px);color:var(--body);max-width:620px;margin-bottom:36px}

/* ---------- PAGE HERO (inner pages) ---------- */
.page-hero{position:relative;overflow:hidden;padding:clamp(52px,8vw,96px) 0 clamp(32px,4vw,48px);border-bottom:1px solid var(--line)}
.page-hero .wrap{position:relative;z-index:1;max-width:820px}
.page-hero h1{font-size:clamp(34px,5.2vw,60px);margin-bottom:22px}
.page-hero p{font-size:clamp(16px,1.9vw,19px);max-width:640px}

/* ---------- PROOF BAR ---------- */
.proof{background:var(--wash);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.proof .wrap{padding-top:clamp(44px,6vw,64px);padding-bottom:clamp(44px,6vw,64px)}
.proof-label{font-size:12px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--blue);text-align:center;margin-bottom:36px}
.stats{display:grid;grid-template-columns:repeat(5,1fr);gap:24px;text-align:center}
.stat .num{font-size:clamp(30px,4vw,46px);font-weight:800;color:var(--blue);letter-spacing:-.03em;line-height:1}
.stat .cap{font-size:13.5px;color:var(--body);margin-top:10px;line-height:1.35;font-weight:500}
.clouds{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;margin-top:34px;padding-top:28px;border-top:1px solid rgba(20,102,181,.18)}
.clouds span{font-size:13px;font-weight:700;letter-spacing:.05em;color:var(--ink);padding:6px 16px;
  background:rgba(255,255,255,.7);border:1px solid rgba(20,102,181,.2);border-radius:999px}

/* ---------- SECTION SHELL ---------- */
section.block{padding:clamp(64px,9vw,108px) 0}
.sec-head{max-width:680px;margin-bottom:clamp(40px,5vw,60px)}
.sec-eyebrow{font-size:12.5px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);
  margin-bottom:16px;display:flex;align-items:center;gap:10px}
.sec-eyebrow::before{content:"";width:22px;height:2px;background:var(--muted)}
h2{font-size:clamp(28px,4vw,42px);font-weight:800;letter-spacing:-.024em;color:var(--ink);line-height:1.08}
.sec-head p{margin-top:18px;font-size:17px}

/* ---------- WHAT WE DO (home grid) ---------- */
.services{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:18px;overflow:hidden}
.svc{background:var(--bg);padding:clamp(28px,3.4vw,40px);position:relative;transition:background .25s}
.svc:hover{background:#fff}
.svc-no{font-size:13px;font-weight:800;color:var(--bright);letter-spacing:.04em}
.svc h3{font-size:21px;font-weight:700;color:var(--ink);margin:16px 0 12px;letter-spacing:-.01em}
.svc p{font-size:15.5px;line-height:1.62}
.svc::after{content:"";position:absolute;left:0;top:0;width:3px;height:0;background:var(--blue);transition:height .3s ease}
.svc:hover::after{height:100%}
.svc-link{display:inline-flex;align-items:center;gap:8px;margin-top:38px;font-weight:600;color:var(--blue)}
.svc-link svg{width:16px;height:16px;transition:transform .2s}
.svc-link:hover svg{transform:translateX(4px)}

/* ---------- HOW WE WORK ---------- */
.how{background:var(--ink);color:#fff;border-radius:22px;overflow:hidden;position:relative}
.how-inner{display:grid;grid-template-columns:1.1fr 1fr;gap:clamp(32px,5vw,72px);padding:clamp(40px,5.5vw,72px);align-items:center}
.how h2{color:#fff}
.how .sec-eyebrow{color:var(--bright)}
.how .sec-eyebrow::before{background:var(--bright)}
.how p{color:#C7CCD3;font-size:16.5px;margin-top:20px}
.increment{display:flex;flex-direction:column;gap:14px}
.inc-card{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:14px;
  padding:22px 24px;display:flex;align-items:baseline;gap:18px;transition:border-color .25s,background .25s}
.inc-card:hover{border-color:var(--bright);background:rgba(46,155,224,.08)}
.inc-card b{font-size:26px;font-weight:800;color:#fff;letter-spacing:-.02em;flex:none;min-width:120px}
.inc-card span{font-size:14.5px;color:#C7CCD3;line-height:1.5}

/* ---------- CLOSE ---------- */
.close{position:relative;overflow:hidden;text-align:center;padding:clamp(72px,9vw,120px) 0}
.close .wrap{position:relative;z-index:1}
.close .blob-blue{left:auto;right:-6%;bottom:-30%;transform:rotate(22deg)}
.close .blob-grey{left:auto;right:8%;bottom:-34%;transform:rotate(54deg);opacity:.5}
.close h2{max-width:14ch;margin:0 auto 30px}
.close-mark{width:140px;height:auto;margin:0 auto 30px}

/* ---------- PROSE (about, careers, legal) ---------- */
.prose{max-width:760px}
.prose h2{margin:48px 0 18px}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:19px;font-weight:700;color:var(--ink);margin:28px 0 10px}
.prose p{font-size:17px;margin-bottom:18px}
.prose p strong{color:var(--ink)}

/* ---------- SERVICES (detail) ---------- */
.svc-detail{padding:clamp(40px,5vw,64px) 0;border-top:1px solid var(--line)}
.svc-detail:first-of-type{border-top:0}
.svc-detail .num{font-size:13px;font-weight:800;color:var(--bright)}
.svc-detail h2{margin:14px 0 18px}
.svc-detail p{font-size:17px;max-width:780px;margin-bottom:18px}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}
.tags span{font-size:12.5px;font-weight:600;color:var(--body);background:var(--bg);border:1px solid var(--line);
  border-radius:999px;padding:6px 14px}
.tags.label{margin-top:8px}

/* ---------- CASE STUDIES ---------- */
.cs{padding:clamp(40px,5vw,64px) 0;border-top:1px solid var(--line)}
.cs:first-of-type{border-top:0}
.cs-sector{font-size:12.5px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--blue)}
.cs h2{font-size:clamp(24px,3.2vw,34px);margin:12px 0 18px}
.cs p{font-size:16.5px;max-width:820px;margin-bottom:16px}

/* ---------- CONTACT ---------- */
.contact-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:clamp(36px,6vw,72px);align-items:start}
.field{display:flex;flex-direction:column;gap:7px;margin-bottom:20px}
.field label{font-size:13px;font-weight:700;color:var(--ink);letter-spacing:.02em}
.field input,.field textarea{font-family:inherit;font-size:16px;color:var(--ink);background:#fff;
  border:1px solid var(--line);border-radius:12px;padding:13px 16px;transition:border-color .2s,box-shadow .2s}
.field input:focus,.field textarea:focus{outline:0;border-color:var(--blue);box-shadow:0 0 0 3px rgba(20,102,181,.12)}
.field textarea{min-height:140px;resize:vertical}
.contact-aside{background:var(--wash);border-radius:18px;padding:clamp(28px,3vw,40px)}
.contact-aside h3{font-size:13px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--blue);margin-bottom:18px}
.contact-aside .row{margin-bottom:20px}
.contact-aside .row span{display:block;font-size:13px;color:var(--muted);font-weight:600;margin-bottom:4px}
.contact-aside .row a,.contact-aside .row p{font-size:17px;color:var(--ink);font-weight:600}
/* form validation + states. --error is the one functional (non-brand) state color, used only for invalid feedback. */
.field-error{display:block;font-size:13px;font-weight:600;color:var(--error);margin-top:6px}
.field input[aria-invalid="true"],.field textarea[aria-invalid="true"]{border-color:var(--error);box-shadow:0 0 0 3px rgba(164,22,58,.12)}
.form-note{margin-top:18px;font-size:15px;font-weight:600;color:var(--error)}
.form-note a{color:var(--blue);font-weight:700;text-decoration:underline;text-underline-offset:2px}
.form-done{background:var(--wash);border-radius:18px;padding:clamp(28px,3vw,40px)}
.form-done h3{font-size:22px;font-weight:800;color:var(--ink);letter-spacing:-.01em;margin-bottom:10px}
.form-done p{font-size:16.5px;color:var(--body);line-height:1.6}

/* ---------- FOOTER ---------- */
footer{background:var(--ink);color:#A7AEB7}
.foot-top{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding:clamp(48px,6vw,76px) 0 clamp(36px,4vw,48px)}
.foot-top .logo img{height:42px}
.foot-top .logo .word span{font-size:12px;letter-spacing:.2em;color:#7C838D}
.foot-top .logo .word span.b{color:#fff}
.foot-blurb{margin-top:20px;font-size:14.5px;color:#A7AEB7;max-width:320px}
.foot-col h4{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:#7C838D;font-weight:700;margin-bottom:18px}
.foot-col a{display:block;font-size:14.5px;color:#C7CCD3;padding:5px 0;transition:color .2s}
.foot-col a:hover{color:#fff}
.foot-bar{border-top:1px solid rgba(255,255,255,.1);padding:24px 0;display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px;font-size:13px}
.foot-bar .legal{display:flex;gap:22px}
.foot-bar a:hover{color:#fff}

/* ---------- REVEAL ---------- */
/* Hide-then-reveal only when JS is present (<html class="js">). Without JS the
   content stays visible, so a blocked/failed script never blanks the page. */
.js .reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- RESPONSIVE ---------- */
@media(max-width:900px){
  .nav-links,.nav .cta{display:none}
  .burger{display:block}
  .stats{grid-template-columns:repeat(3,1fr);gap:32px 24px}
  .services{grid-template-columns:1fr}
  .how-inner{grid-template-columns:1fr;gap:32px}
  .contact-grid{grid-template-columns:1fr;gap:32px}
  .foot-top{grid-template-columns:1fr 1fr}
  .foot-top .brand{grid-column:1/-1}
  .blob-blue{opacity:.7}.blob-grey{opacity:.4}
}
@media(max-width:560px){
  .stats{grid-template-columns:1fr}
  .foot-top{grid-template-columns:1fr}
  .foot-bar{flex-direction:column}
  .inc-card{flex-direction:column;gap:6px}
  .inc-card b{min-width:0}
}

/* ---------- LARGE SCREENS (> 1280): grow the column, then stop ---------- */
/* Common large laptops / desktops */
@media(min-width:1440px){ :root{ --maxw:1280px; } }
/* Large monitors — give the page more presence, lift the type ceilings */
@media(min-width:1728px){
  :root{ --maxw:1340px; }
  h1{font-size:clamp(40px,6.6vw,86px)}
  .hero{padding:148px 0 112px}
  h2{font-size:clamp(28px,4vw,48px)}
  .hero p.lede{max-width:660px}
}
/* 4K / ultrawide — cap so line length stays readable and the page stays composed */
@media(min-width:2300px){ :root{ --maxw:1440px; } }

@media(prefers-reduced-motion:reduce){
  *{scroll-behavior:auto!important}
  /* Match the .js specificity above so this still wins by source order. */
  .js .reveal,.reveal{opacity:1;transform:none;transition:none}
}