/* PetrieUK site — brand tokens from the PetrieUK design system */
@font-face{font-family:'Carlito';src:url('/assets/fonts/carlito-700-normal.woff2') format('woff2');font-weight:700;font-style:normal;font-display:swap}
@font-face{font-family:'Carlito';src:url('/assets/fonts/carlito-700-italic.woff2') format('woff2');font-weight:700;font-style:italic;font-display:swap}
@font-face{font-family:'Saira Condensed';src:url('/assets/fonts/saira-condensed-800.woff2') format('woff2');font-weight:800;font-display:swap}

:root{
  --navy:#0B1E7A; --blue:#0A3CFF; --azure:#0A78FF; --cyan:#5CE1FF;
  --ink:#0A1230; --body:#4A5F8C; --surface:#F4F7FE; --surface-2:#E6EEFB; --border:#C9D8F2; --white:#fff;
  --grad:linear-gradient(135deg,#0B1E7A 0%,#0A3CFF 55%,#0A78FF 100%);
  --font-display:'Carlito',Calibri,'Segoe UI',system-ui,sans-serif;
  --font-body:Aptos,'Segoe UI',system-ui,-apple-system,Roboto,'Helvetica Neue',Arial,sans-serif;
  --radius:14px; --shadow:0 6px 24px rgba(11,30,122,.08); --shadow-lg:0 18px 50px rgba(11,30,122,.16);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--white);color:var(--body);font:400 17px/1.6 var(--font-body)}
img{max-width:100%;display:block}
a{color:var(--blue);text-decoration:none}
a:hover{color:var(--navy)}
h1,h2,h3{font-family:var(--font-display);font-weight:700;color:var(--navy);line-height:1.08;margin:0 0 .5em;letter-spacing:-.01em}
h1,h2{font-style:italic}
h1{font-size:clamp(36px,6vw,62px)}
h2{font-size:clamp(28px,4vw,42px)}
h3{font-size:21px}
p{margin:0 0 1em}
.wrap{max-width:1160px;margin:0 auto;padding:0 20px}
.kicker{display:inline-block;font:700 12px/1 var(--font-body);text-transform:uppercase;letter-spacing:.14em;color:var(--blue);margin-bottom:14px}
.lead{font-size:19px;max-width:640px}
.section{padding:84px 0}
.section.tint{background:var(--surface)}
.section-head{max-width:700px;margin-bottom:40px}
.skip{position:absolute;left:-9999px}.skip:focus{left:12px;top:12px;z-index:99;background:#fff;padding:8px 12px;border-radius:8px}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;font:700 16px/1 var(--font-body);padding:15px 22px;border-radius:10px;border:2px solid transparent;cursor:pointer;transition:transform .18s var(--ease),background .18s var(--ease),box-shadow .18s var(--ease)}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:scale(.98)}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 6px 18px rgba(10,60,255,.3)}
.btn-primary:hover{background:var(--navy);color:#fff}
.btn-light{background:#fff;color:var(--navy)}
.btn-light:hover{color:var(--blue)}
.btn-ghost{border-color:rgba(255,255,255,.55);color:#fff}
.btn-ghost:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.08)}
.btn-row{display:flex;flex-wrap:wrap;gap:12px}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px}
/* logo lockup: flight-path mark + slanted wordmark + DRONE + DESIGN tagline */
.brand{display:flex;align-items:center;gap:10px;color:var(--navy)}
.brand img{width:38px;height:38px}
.brand .word{display:block;font:800 28px/.9 'Saira Condensed',var(--font-display);letter-spacing:.01em;transform:skewX(-8deg);white-space:nowrap}
.brand .tag{display:block;font:700 9px/1 var(--font-body);letter-spacing:.3em;color:var(--blue);margin-top:4px;white-space:nowrap}
.site-footer .brand .tag{color:var(--cyan)}
.nav{display:flex;align-items:center;gap:24px}
.nav a{color:var(--ink);font-weight:600;font-size:15px;white-space:nowrap}
.nav a:hover,.nav a[aria-current=page]{color:var(--blue)}
.nav .btn{color:#fff;padding:11px 16px;font-size:15px}
.menu-toggle{display:none}
@media (max-width:1120px){
  .menu-toggle{display:inline-flex;align-items:center;gap:8px;background:none;border:1px solid var(--border);border-radius:10px;padding:9px 12px;font:600 15px var(--font-body);color:var(--navy);cursor:pointer}
  .nav{display:none;position:absolute;left:0;right:0;top:68px;background:#fff;border-bottom:1px solid var(--border);flex-direction:column;align-items:stretch;gap:0;padding:8px 20px 20px;box-shadow:var(--shadow)}
  .nav.open{display:flex}
  .nav a{padding:12px 0;border-bottom:1px solid var(--surface-2)}
  .nav .btn{margin-top:12px;justify-content:center;border-bottom:0}
}

/* hero */
.hero{background:var(--grad);color:#fff;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-120px;top:-120px;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(92,225,255,.35),transparent 65%);pointer-events:none}
.hero .wrap{position:relative;z-index:1;padding-top:88px;padding-bottom:88px}
.hero h1{color:#fff;max-width:820px}
.hero .lead{color:rgba(255,255,255,.88)}
.hero .kicker{color:var(--cyan)}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin:28px 0 34px;padding:0;list-style:none}
.hero-chips li{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);border-radius:999px;padding:7px 14px;font-size:14px;font-weight:600}
.hero-price{display:inline-flex;align-items:baseline;gap:8px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);border-radius:12px;padding:10px 16px;margin:6px 0 30px}
.hero-price b{font:700 italic 30px/1 var(--font-display);color:#fff}
.hero-price span{font-size:14px;color:rgba(255,255,255,.8)}
.crumbs{font-size:14px;margin-bottom:18px;color:rgba(255,255,255,.75)}
.crumbs a{color:#fff}

/* service cards */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}
.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:transform .18s var(--ease),box-shadow .18s var(--ease)}
a.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.card h3{margin-bottom:6px}
.card .for{font-size:15px;margin-bottom:16px}
.card ul{margin:0 0 20px;padding-left:18px;font-size:15px}
.card .price{margin-top:auto;display:flex;align-items:baseline;justify-content:space-between;gap:10px;border-top:1px solid var(--surface-2);padding-top:16px}
.card .price b{font:700 italic 24px/1 var(--font-display);color:var(--navy)}
.card .price small{color:var(--body);font-size:13px}
.card .more{font-weight:700;color:var(--blue);font-size:15px;white-space:nowrap}
/* five services: three across, then two wider underneath */
@media (min-width:1001px){.cards.five{grid-template-columns:repeat(6,1fr)}.cards.five .card{grid-column:span 2}.cards.five .card:nth-child(n+4){grid-column:span 3}}
@media (min-width:640px) and (max-width:1000px){.cards.five{grid-template-columns:1fr 1fr}.cards.five .card:last-child{grid-column:1/-1}}

/* steps */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px;counter-reset:step;list-style:none;padding:0;margin:0}
.steps li{background:#fff;border-radius:var(--radius);padding:24px;border:1px solid var(--border)}
.steps li::before{counter-increment:step;content:"0" counter(step);display:block;font:700 italic 30px/1 var(--font-display);color:var(--blue);margin-bottom:10px}
.steps b{display:block;color:var(--navy);font-size:18px;margin-bottom:6px}

/* features / ticks */
.ticks{list-style:none;padding:0;margin:0;display:grid;gap:12px}
.ticks li{position:relative;padding-left:32px}
.ticks li::before{content:"";position:absolute;left:0;top:4px;width:20px;height:20px;border-radius:50%;background:var(--blue) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M5.5 10.5l3 3 6-6.5' fill='none' stroke='%23fff' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/20px no-repeat}
.split{display:grid;grid-template-columns:1.25fr 1fr;gap:48px;align-items:start}
.panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:28px}
.panel h3{margin-bottom:14px}
@media (max-width:860px){.split{grid-template-columns:1fr;gap:32px}}

/* why */
.why{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:28px}
.why b{display:block;color:var(--navy);font-size:18px;margin-bottom:6px}
.why p{font-size:16px;margin:0}

/* work */
.work-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px}
a.card,a.work-card{color:var(--body)}
.work-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.work-card img{width:100%;aspect-ratio:16/10;object-fit:cover;object-position:top left;background:var(--surface-2)}
.work-card div{padding:20px 22px}
.work-card h3{margin-bottom:4px;font-size:20px}
.work-card p{margin:0;font-size:14px}
.case{display:grid;grid-template-columns:1.1fr 1fr;gap:44px;align-items:center;padding:44px 0;border-top:1px solid var(--border)}
.case:first-child{border-top:0}
.case img{width:100%;border-radius:var(--radius);box-shadow:var(--shadow-lg);border:1px solid var(--border)}
.case .tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}
.case .tags span{font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--blue);background:var(--surface-2);border-radius:999px;padding:5px 10px}
.case .role{font-size:14px;font-weight:600;color:var(--azure);margin-bottom:12px}
.case .ticks{margin-bottom:32px}
@media (min-width:861px){.case:nth-child(even) img{order:2}}
@media (max-width:860px){.case{grid-template-columns:1fr;gap:22px}}

/* drone band */
.band{position:relative;color:#fff;background:var(--navy) center/cover no-repeat}
.band::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(11,30,122,.92) 0%,rgba(11,30,122,.65) 55%,rgba(11,30,122,.2) 100%)}
.band .wrap{position:relative;padding-top:96px;padding-bottom:96px}
.band h2{color:#fff}
.band p{color:rgba(255,255,255,.88);max-width:520px}
.band .kicker{color:var(--cyan)}

/* faq */
.faq{max-width:820px}
.faq details{border-bottom:1px solid var(--border);padding:18px 0}
.faq summary{cursor:pointer;font-weight:700;color:var(--navy);font-size:18px;list-style:none;display:flex;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:24px;line-height:1;color:var(--blue)}
.faq details[open] summary::after{content:"\2212"}
.faq details p{margin:12px 0 0}

/* contact */
.contact{display:grid;grid-template-columns:1fr 1.3fr;gap:48px;align-items:start}
.contact .ticks{margin-top:22px}
form.brief{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);display:grid;grid-template-columns:1fr 1fr;gap:16px}
form.brief .full{grid-column:1/-1}
form.brief label{display:block;font-size:14px;font-weight:700;color:var(--navy);margin-bottom:6px}
form.brief input,form.brief select,form.brief textarea{width:100%;font:16px var(--font-body);color:var(--ink);background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:12px 14px}
form.brief input:focus,form.brief select:focus,form.brief textarea:focus{outline:2px solid var(--blue);outline-offset:1px;background:#fff}
form.brief textarea{min-height:130px;resize:vertical}
form.brief .hp{display:none}
form.brief .note{font-size:13px;margin:0}
@media (max-width:860px){.contact{grid-template-columns:1fr}form.brief{grid-template-columns:1fr;padding:22px}}

/* cta strip + footer */
.cta{background:var(--grad);color:#fff;border-radius:20px;padding:48px;display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
.cta h2{color:#fff;margin:0}
.site-footer{background:var(--ink);color:rgba(255,255,255,.7);padding:56px 0 30px;font-size:15px}
.site-footer .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px;margin-bottom:36px}
.site-footer h3{color:#fff;font:700 13px/1 var(--font-body);text-transform:uppercase;letter-spacing:.14em;margin-bottom:14px}
.site-footer ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.site-footer a{color:rgba(255,255,255,.85)}
.site-footer a:hover{color:var(--cyan)}
.site-footer .brand{color:#fff;margin-bottom:12px}
.site-footer .legal{border-top:1px solid rgba(255,255,255,.12);padding-top:20px;font-size:13px}
@media (max-width:760px){.site-footer .cols{grid-template-columns:1fr}.cta{padding:32px}.section{padding:60px 0}}

/* plain pages */
.prose{max-width:720px}
.prose h2{margin-top:1.4em;font-size:28px}