/* PNR Engineering Consultancy - site.css
   Change the colours and fonts in :root to re-theme the whole site. */
:root{
  --ink:#0F2A3D; --ink-deep:#0A1E2D; --paper:#FAFBFC; --stone:#EDF1F2; --line:#D3DBDF;
  --text:#1B2A36; --muted:#4F5F6B; --gold:#E9A400; --gold-hover:#F5BA26;
  --on-dark:#C9D6DE; --focus:#0F2A3D;
  --font-ui:"Archivo","Helvetica Neue",Arial,sans-serif;
  --font-body:"Source Serif 4",Georgia,"Times New Roman",serif;
  --wrap:1160px; --gutter:clamp(1.25rem,4vw,2.5rem);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--paper);color:var(--text);font:400 1.125rem/1.65 var(--font-body)}
img,svg{max-width:100%;height:auto}
a{color:var(--ink);text-underline-offset:.18em;text-decoration-thickness:1px}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--focus);outline-offset:3px}
.on-dark{--focus:#E9A400}
.on-dark a:not(.btn){color:#fff}
.skip{position:absolute;left:-999px;top:0;background:var(--gold);color:var(--ink);padding:.6rem 1rem;font:600 1rem var(--font-ui);z-index:100}
.skip:focus{left:0}
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter)}
h1,h2,h3{font-family:var(--font-ui);font-stretch:108%;color:var(--ink);margin:0 0 .6em;line-height:1.15;letter-spacing:-.01em}
h1{font-size:clamp(2.05rem,1.2rem + 3.4vw,3.5rem);font-weight:700;line-height:1.08}
h2{font-size:clamp(1.55rem,1.1rem + 1.7vw,2.25rem);font-weight:700}
h3{font-size:1.25rem;font-weight:650}
p{margin:0 0 1.1em;max-width:66ch}
ul,ol{padding-left:1.2rem}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:var(--paper);border-bottom:1px solid var(--line)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:.6rem 2rem;flex-wrap:wrap;padding-block:.75rem}
.brand{display:flex;align-items:center;gap:.7rem;text-decoration:none;color:var(--ink)}
.brand-text{display:flex;flex-direction:column;line-height:1.1;font-family:var(--font-ui)}
.brand-name{font-weight:800;font-size:1.25rem;letter-spacing:.01em}
.brand-sub{font-weight:500;font-size:.8rem;color:var(--muted)}
.nav{display:flex;align-items:center;gap:.5rem 1.6rem;flex-wrap:wrap}
.nav ul{display:flex;gap:.2rem 1.4rem;list-style:none;margin:0;padding:0;flex-wrap:wrap}
.nav a:not(.btn){font:500 .98rem var(--font-ui);color:var(--text);text-decoration:none;padding:.35rem 0;border-bottom:3px solid transparent}
.nav a:not(.btn):hover{border-bottom-color:var(--line)}
.nav a[aria-current="page"]{border-bottom-color:var(--gold);font-weight:600}
@media(max-width:620px){.nav .btn{display:none}}

/* Buttons */
.btn{display:inline-block;padding:.72rem 1.25rem;border-radius:4px;border:2px solid transparent;font:600 1rem/1.2 var(--font-ui);text-decoration:none;cursor:pointer;transition:background-color .15s,color .15s,border-color .15s}
.btn-primary{background:var(--gold);color:var(--ink)}
.btn-primary:hover{background:var(--gold-hover)}
.btn-ghost{border-color:rgba(250,251,252,.55);color:var(--paper)}
.btn-ghost:hover{border-color:var(--paper);background:rgba(250,251,252,.08)}
.btn-outline{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-outline:hover{background:var(--ink);color:var(--paper)}
.actions{display:flex;flex-wrap:wrap;gap:.8rem;margin-top:1.8rem}

/* Hero */
.hero{background:var(--ink);color:var(--paper);padding-block:clamp(2.5rem,6vw,5.5rem)}
.hero .wrap{display:grid;gap:2.5rem 4rem;align-items:center}
@media(min-width:900px){.hero .wrap{grid-template-columns:1.05fr .95fr}}
.hero h1{color:#fff}
.hero-lead{font-size:1.25rem;color:var(--on-dark);max-width:34em}
.drawing{margin:0}
.drawing svg{display:block;width:100%;border-radius:6px;background:#12344B}
.drawing figcaption{font:400 .9rem/1.45 var(--font-ui);color:var(--on-dark);margin-top:.7rem;max-width:none}
@media(prefers-reduced-motion:no-preference){
  .frame{transform-origin:280px 290px;animation:sway 3.6s .7s ease-out 1 both}
  .wave{transform-origin:280px 436px;animation:ripple 2.2s ease-out 1 both}
  .wave-2{animation-delay:.25s}
  .wave-3{animation-delay:.5s}
}
@keyframes ripple{0%{transform:scale(.2);opacity:0}30%{opacity:1}100%{transform:scale(1);opacity:1}}
@keyframes sway{0%{transform:rotate(0)}12%{transform:rotate(1.7deg)}28%{transform:rotate(-1.4deg)}44%{transform:rotate(.95deg)}60%{transform:rotate(-.55deg)}78%{transform:rotate(.25deg)}100%{transform:rotate(0)}}

/* Sections */
.section{padding-block:clamp(3rem,6vw,5.5rem)}
.section-stone{background:var(--stone)}
.section-ink{background:var(--ink);color:var(--paper)}
.section-ink h2{color:#fff}
.section-ink p{color:var(--on-dark)}
.section-head{max-width:46rem;margin-bottom:2.2rem}
.section-head p{font-size:1.15rem;color:var(--muted);margin-bottom:0}
.cols-2,.cols-3{display:grid;gap:2rem 3.5rem}
@media(min-width:800px){.cols-2{grid-template-columns:repeat(2,1fr)}.cols-3{grid-template-columns:repeat(3,1fr)}}
.cols-3 h3{margin-bottom:.4em}
.cols-3 p{margin:0;color:var(--muted)}

/* Service list */
.service-list{list-style:none;margin:0;padding:0;border-bottom:1px solid var(--line)}
.service-list li{display:grid;gap:.4rem 3rem;padding:1.4rem 0;border-top:1px solid var(--line)}
@media(min-width:760px){.service-list li{grid-template-columns:minmax(0,1fr) minmax(0,1.6fr)}}
.service-list h3{margin:0}
.service-list h3 a{text-decoration:none}
.service-list h3 a:hover{text-decoration:underline}
.service-list p{margin:0;color:var(--muted)}

/* Facts (definition list) */
.facts{margin:0}
.facts div{display:grid;gap:.1rem 1.5rem;padding:.85rem 0;border-top:1px solid var(--line)}
@media(min-width:560px){.facts div{grid-template-columns:8.5rem 1fr}}
.facts dt{font:600 .95rem var(--font-ui);color:var(--muted)}
.facts dd{margin:0}

/* Inner page header */
.page-head{background:var(--stone);border-bottom:1px solid var(--line);padding-block:clamp(2rem,4vw,3.5rem)}
.crumbs ol{display:flex;flex-wrap:wrap;gap:.3rem .6rem;list-style:none;margin:0 0 1.2rem;padding:0;font:400 .9rem var(--font-ui);color:var(--muted)}
.crumbs li+li::before{content:"/";margin-right:.6rem}
.crumbs a{color:var(--muted)}
.page-head h1{margin-bottom:.4em}
.page-head .lead{font-size:1.2rem;color:var(--muted);margin:0}

/* Content pages */
.prose h2{margin-top:2.2em}
.prose h2:first-child{margin-top:0}
.jump{display:flex;flex-wrap:wrap;gap:.5rem .7rem;list-style:none;padding:0;margin:0 0 2rem}
.jump a{display:inline-block;font:500 .95rem var(--font-ui);padding:.35rem .85rem;border:1px solid var(--line);border-radius:999px;text-decoration:none;background:#fff}
.jump a:hover{border-color:var(--ink)}
.svc{padding-block:2.2rem;border-top:1px solid var(--line);scroll-margin-top:5rem}
.svc:first-of-type{border-top:0;padding-top:0}
.svc h2{margin-bottom:.4em}
.covers{padding-left:1.2rem;columns:1}
@media(min-width:700px){.covers{columns:2;column-gap:3rem}}
.covers li{break-inside:avoid;margin-bottom:.3rem}
.covers-label{font:600 .95rem var(--font-ui);color:var(--muted);margin:1.2rem 0 .4rem}
.notice{border-left:4px solid var(--gold);background:#fff;padding:1rem 1.2rem;margin:0 0 2rem;max-width:66ch;font:400 1rem/1.5 var(--font-ui)}
.notice p{margin:0}
.people{list-style:none;margin:0 0 1rem;padding:0;display:grid;gap:1.5rem 3rem}
@media(min-width:700px){.people{grid-template-columns:repeat(2,1fr)}}
.person h3{margin:0 0 .15rem}
.person p{margin:0;color:var(--muted)}
.people-lead .person h3{font-size:1.5rem}
.plain-list{list-style:none;padding:0;margin:0 0 1rem}
.plain-list li{padding:.55rem 0;border-top:1px solid var(--line)}
.plain-list li:last-child{border-bottom:1px solid var(--line)}
details{margin:1rem 0 1.5rem;max-width:66ch}
summary{cursor:pointer;font:600 1rem var(--font-ui);color:var(--ink)}
details ol{margin-top:.8rem}
details li{margin-bottom:.4rem}

/* Tables */
.table-wrap{overflow-x:auto;margin:1rem 0 2.2rem}
table{border-collapse:collapse;width:100%;font:400 1rem/1.5 var(--font-ui)}
caption{text-align:left;font-weight:600;padding-bottom:.6rem;color:var(--ink);font-size:1.05rem}
th,td{text-align:left;padding:.6rem .8rem;border-bottom:1px solid var(--line);vertical-align:top}
thead th{border-bottom:2px solid var(--ink);font-weight:600}
td:nth-child(2){white-space:nowrap}
@media(max-width:560px){td:nth-child(2){white-space:normal}}

/* Contact form */
.form{display:grid;gap:1.1rem;max-width:40rem}
.field{display:grid;gap:.35rem}
.field label{font:600 .95rem var(--font-ui);color:var(--ink)}
.field input,.field select,.field textarea{font:400 1rem var(--font-body);padding:.7rem .8rem;border:1px solid #7C8C97;border-radius:4px;background:#fff;color:var(--text);width:100%}
.field textarea{min-height:9rem;resize:vertical}
.hint{font:400 .85rem var(--font-ui);color:var(--muted)}
.hp{position:absolute;left:-9999px}
address{font-style:normal}
address p{margin-bottom:.5em}

/* Footer */
.site-footer{background:var(--ink-deep);color:var(--on-dark);padding-block:3rem 1.5rem;font:400 .98rem/1.6 var(--font-ui)}
.site-footer p{max-width:none}
.site-footer a{color:var(--on-dark)}
.site-footer a:hover{color:#fff}
.footer-grid{display:grid;gap:2rem 3rem}
@media(min-width:800px){.footer-grid{grid-template-columns:1.4fr 1fr 1.2fr}}
.footer-title{font:600 1rem var(--font-ui);color:#fff;letter-spacing:0;margin:0 0 .8rem}
.footer-links{list-style:none;margin:0;padding:0}
.footer-links li{margin-bottom:.35rem}
.legal{border-top:1px solid rgba(250,251,252,.18);margin-top:2rem;padding-top:1.2rem;font-size:.9rem}
.legal p{margin:0}