/* ============ Opal Caulking Services — design system ============ */
@font-face{font-family:'Poppins';font-weight:300;font-style:normal;font-display:swap;src:url('fonts/Poppins-Light.ttf') format('truetype');}
@font-face{font-family:'Poppins';font-weight:400;font-style:normal;font-display:swap;src:url('fonts/Poppins-Regular.ttf') format('truetype');}
@font-face{font-family:'Poppins';font-weight:500;font-style:normal;font-display:swap;src:url('fonts/Poppins-Medium.ttf') format('truetype');}
@font-face{font-family:'Poppins';font-weight:700;font-style:normal;font-display:swap;src:url('fonts/Poppins-Bold.ttf') format('truetype');}

:root{
  --peri:#B99EF9; --peri-d:#9B7EE0; --lav:#D5CFF4;
  --ink:#0B0B10; --ink-2:#15151D; --line:#26262F;
  --on-dark:#EDEBF5; --on-dark-soft:#C9C6D6;
  --stone:#6A6A78; --mist:#ECEAF4; --paper:#F6F5FA; --white:#fff;
  --ok:#1F9D55; --err:#D64545;
  --maxw:1200px; --gut:clamp(20px,5vw,40px);
  --r-sm:8px; --r-md:12px; --r-lg:20px; --r-pill:40px;
  --sh:0 10px 30px rgba(0,0,0,.14);
  --ease:cubic-bezier(.2,.7,.2,1);
  --sec-y:clamp(56px,9vw,104px);
  --hdr-h:74px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Poppins',system-ui,sans-serif;color:var(--ink);background:var(--paper);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img,video{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{line-height:1.08;letter-spacing:-.01em;font-weight:700}
h1{font-size:clamp(2.1rem,5.2vw,3rem);letter-spacing:-.02em}
h2{font-size:clamp(1.7rem,3.6vw,2.35rem)}
h3{font-size:clamp(1.15rem,2vw,1.4rem)}
p{font-size:clamp(1rem,1.15vw,1.06rem)}
.wrap{max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gut)}
section{padding-block:var(--sec-y)}
.eyebrow{font-weight:500;font-size:.78rem;letter-spacing:.18em;text-transform:uppercase;color:var(--peri-d)}
.dark .eyebrow{color:var(--peri)}
.lead{font-size:clamp(1.05rem,1.5vw,1.22rem);font-weight:300;color:var(--stone)}
.dark .lead{color:var(--on-dark-soft)}
.dark{background:var(--ink);color:var(--on-dark)}
.center{text-align:center}
.mt-s{margin-top:14px}.mt-m{margin-top:26px}.mt-l{margin-top:44px}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:.5em;font-weight:500;font-size:.98rem;border-radius:var(--r-pill);
  padding:14px 28px;border:1.5px solid transparent;cursor:pointer;transition:transform .15s var(--ease),background .2s,color .2s,box-shadow .2s;will-change:transform}
.btn:focus-visible{outline:2px solid var(--lav);outline-offset:3px}
.btn-primary{background:var(--peri);color:var(--ink)}
.btn-primary:hover{background:var(--peri-d);transform:translateY(-2px);box-shadow:0 8px 22px rgba(155,126,224,.4)}
.btn-ghost-d{border-color:var(--lav);color:var(--lav)}
.btn-ghost-d:hover{background:var(--lav);color:var(--ink)}
.btn-ghost-l{border-color:var(--ink);color:var(--ink)}
.btn-ghost-l:hover{background:var(--ink);color:#fff}
.btn-row{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- header ---------- */
.hdr{position:fixed;inset:0 0 auto 0;z-index:50;height:var(--hdr-h);display:flex;align-items:center;
  transition:background .25s,box-shadow .25s,border-color .25s;border-bottom:1px solid transparent}
.hdr .wrap{display:flex;align-items:center;justify-content:space-between;width:100%;gap:24px}
.hdr.scrolled{background:rgba(11,11,16,.92);backdrop-filter:blur(10px);border-bottom-color:var(--line)}
.brand{display:flex;align-items:center;gap:10px;height:44px}
.brand img{height:40px;width:auto}
.nav{display:flex;align-items:center;gap:28px}
.nav a{color:var(--on-dark);font-size:.95rem;font-weight:400;opacity:.9;position:relative;padding:6px 0}
.nav a:hover{opacity:1}
.nav a.active{color:var(--peri)}
.nav .has-sub{position:relative}
.nav .sub{position:absolute;top:calc(100% + 14px);left:50%;transform:translateX(-50%) translateY(8px);
  background:var(--ink-2);border:1px solid var(--line);border-radius:var(--r-md);padding:10px;min-width:280px;
  opacity:0;visibility:hidden;transition:.2s var(--ease);box-shadow:var(--sh)}
.nav .has-sub:hover .sub,.nav .has-sub:focus-within .sub{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.nav .sub a{display:block;padding:10px 12px;border-radius:8px;opacity:1}
.nav .sub a:hover{background:rgba(185,158,249,.12)}
.nav .sub a b{display:block;font-weight:500;color:var(--on-dark)}
.nav .sub a span{font-size:.82rem;color:var(--on-dark-soft)}
.hdr-cta{display:flex;align-items:center;gap:18px}
.hdr-cta .tel{color:var(--on-dark);font-weight:500;font-size:.95rem;white-space:nowrap}
.hdr-cta .tel:hover{color:var(--peri)}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.burger span{width:26px;height:2px;background:var(--on-dark);transition:.25s}
.burger[aria-expanded=true] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger[aria-expanded=true] span:nth-child(2){opacity:0}
.burger[aria-expanded=true] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* mobile menu */
.mmenu{position:fixed;inset:0;z-index:49;background:var(--ink);padding:calc(var(--hdr-h) + 20px) var(--gut) 40px;
  display:flex;flex-direction:column;gap:6px;transform:translateX(100%);transition:transform .3s var(--ease);overflow-y:auto}
.mmenu.open{transform:none}
.mmenu a{color:var(--on-dark);font-size:1.35rem;font-weight:500;padding:14px 0;border-bottom:1px solid var(--line)}
.mmenu a.sub-link{font-size:1rem;font-weight:400;opacity:.8;padding-left:16px}
.mmenu .btn{margin-top:20px;justify-content:center}

/* mobile sticky call bar */
.callbar{position:fixed;left:0;right:0;bottom:0;z-index:48;display:none;grid-template-columns:1fr 1fr;gap:1px;background:var(--line)}
.callbar a{padding:15px;text-align:center;font-weight:600;font-size:.95rem;background:var(--ink);color:#fff}
.callbar a.q{background:var(--peri);color:var(--ink)}

/* ---------- hero ---------- */
.hero{position:relative;min-height:clamp(560px,86vh,860px);display:flex;align-items:center;overflow:hidden;background:var(--ink);color:var(--on-dark)}
.hero-media{position:absolute;inset:0;z-index:0}
.hero-media img,.hero-media video{width:100%;height:100%;object-fit:cover}
.hero-media::after{content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(11,11,16,.92) 0%,rgba(11,11,16,.72) 42%,rgba(11,11,16,.4) 100%)}
.hero .wrap{position:relative;z-index:1;width:100%;padding-block:120px 60px}
.hero h1{max-width:15ch}
.hero .accent{color:var(--peri)}
.hero .lead{max-width:52ch;margin-top:20px}
.hero .btn-row{margin-top:34px}
.hero-sub{min-height:auto}
.hero-sub{min-height:clamp(340px,52vh,520px)}

/* trust bar */
.trust{background:var(--ink-2);border-block:1px solid var(--line)}
.trust .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.trust .item{display:flex;align-items:center;gap:12px;color:var(--on-dark)}
.trust .item svg{flex:0 0 auto;color:var(--peri)}
.trust .item b{font-weight:500;font-size:.98rem;line-height:1.25}
.trust .item span{color:var(--on-dark-soft);font-size:.82rem}

/* section head */
.shead{max-width:64ch}
.shead.center{margin-inline:auto}
.shead h2{margin-top:10px}
.shead p{margin-top:14px}

/* service cards */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:48px}
.card{background:#fff;border:1px solid #ece9f4;border-radius:var(--r-lg);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .25s var(--ease),box-shadow .25s}
.dark .card{background:var(--ink-2);border-color:var(--line)}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh)}
.card .ph{aspect-ratio:16/11;overflow:hidden}
.card .ph img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.card:hover .ph img{transform:scale(1.05)}
.card .body{padding:26px;display:flex;flex-direction:column;flex:1}
.card h3{margin-bottom:8px}
.card .sublist{list-style:none;margin:14px 0 20px;display:flex;flex-wrap:wrap;gap:8px}
.card .sublist li{font-size:.8rem;color:var(--stone);background:var(--mist);border-radius:20px;padding:5px 11px}
.dark .card .sublist li{background:#20202b;color:var(--on-dark-soft)}
.card .go{margin-top:auto;font-weight:500;color:var(--peri-d);display:inline-flex;align-items:center;gap:6px}
.dark .card .go{color:var(--peri)}
.card .go svg{transition:transform .2s}
.card:hover .go svg{transform:translateX(4px)}

/* feature grid (why choose) */
.feat{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;margin-top:48px}
.feat .f{padding:28px;border-radius:var(--r-md);background:#fff;border:1px solid #ece9f4}
.dark .feat .f{background:var(--ink-2);border-color:var(--line)}
.feat .ic{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;background:rgba(185,158,249,.16);color:var(--peri-d);margin-bottom:16px}
.dark .feat .ic{color:var(--peri)}
.feat h3{font-size:1.05rem;margin-bottom:6px}
.feat p{font-size:.92rem;color:var(--stone)}
.dark .feat p{color:var(--on-dark-soft)}

/* split feature */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(30px,5vw,64px);align-items:center}
.split.rev .txt{order:2}
.split .media{border-radius:var(--r-lg);overflow:hidden;aspect-ratio:4/3;box-shadow:var(--sh)}
.split .media img,.split .media video{width:100%;height:100%;object-fit:cover}
.split ul.ticks{list-style:none;margin-top:22px;display:grid;gap:12px}
.split ul.ticks li{display:flex;gap:12px;align-items:flex-start;font-size:.98rem}
.split ul.ticks li svg{flex:0 0 auto;color:var(--ok);margin-top:3px}

/* colour-match strip */
.cmatch{background:linear-gradient(120deg,var(--ink) 0%,#171326 100%);color:var(--on-dark);border-radius:var(--r-lg)}
.cmatch .wrap-in{display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;padding:clamp(30px,5vw,56px)}
.chips{display:flex;gap:10px}
.chips i{width:40px;height:40px;border-radius:50%;border:2px solid rgba(255,255,255,.14);display:block}

/* work strip */
.gallery-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:44px}
.gallery-strip a{border-radius:var(--r-md);overflow:hidden;aspect-ratio:1;position:relative}
.gallery-strip img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.gallery-strip a:hover img{transform:scale(1.07)}

/* CTA band */
.cta{position:relative;background:var(--ink);color:var(--on-dark);text-align:center;overflow:hidden}
.cta::before{content:"";position:absolute;top:-40%;left:50%;transform:translateX(-50%);width:600px;height:600px;
  background:radial-gradient(circle,rgba(185,158,249,.22),transparent 62%);pointer-events:none}
.cta .wrap{position:relative}
.cta h2{max-width:20ch;margin-inline:auto}
.cta .btn-row{justify-content:center;margin-top:30px}

/* specialised icon grid */
.sgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(215px,1fr));gap:16px;margin-top:44px}
.sgrid .s{display:flex;gap:14px;align-items:flex-start;padding:20px;border-radius:var(--r-md);background:#fff;border:1px solid #ece9f4;transition:.2s var(--ease)}
.sgrid .s:hover{border-color:var(--peri);transform:translateY(-2px);box-shadow:var(--sh)}
.sgrid .s .ic{flex:0 0 auto;width:40px;height:40px;border-radius:10px;display:grid;place-items:center;background:rgba(185,158,249,.16);color:var(--peri-d)}
.sgrid .s:hover .ic{background:var(--peri);color:var(--ink)}
.sgrid .s b{font-weight:500;font-size:.95rem;display:block}
.sgrid .s span{font-size:.84rem;color:var(--stone)}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:48px;counter-reset:st}
.steps .st{padding-top:22px;border-top:2px solid var(--line)}
.dark .steps .st{border-color:var(--line)}
.steps .st::before{counter-increment:st;content:"0" counter(st);font-weight:700;font-size:1.5rem;color:var(--peri-d);display:block;margin-bottom:10px}
.dark .steps .st::before{color:var(--peri)}
.steps .st h3{font-size:1.05rem;margin-bottom:6px}
.steps .st p{font-size:.9rem;color:var(--stone)}
.dark .steps .st p{color:var(--on-dark-soft)}

/* FAQ */
.faq{max-width:820px;margin-inline:auto;margin-top:40px}
.faq details{border-bottom:1px solid #e4e1ee;padding:6px 0}
.dark .faq details{border-color:var(--line)}
.faq summary{list-style:none;cursor:pointer;padding:18px 40px 18px 0;font-weight:500;font-size:1.05rem;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:6px;top:16px;font-size:1.5rem;color:var(--peri-d);transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq p{padding:0 0 20px;color:var(--stone);font-size:.98rem}
.dark .faq p{color:var(--on-dark-soft)}

/* gallery (our work) */
.filters{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:36px}
.filters button{border:1.5px solid #d9d5e8;background:#fff;color:var(--ink);border-radius:var(--r-pill);padding:9px 20px;font:inherit;font-size:.9rem;font-weight:500;cursor:pointer;transition:.2s}
.filters button:hover{border-color:var(--peri)}
.filters button.active{background:var(--ink);color:#fff;border-color:var(--ink)}
.grid-gallery{columns:3;column-gap:16px;margin-top:32px}
.grid-gallery figure{break-inside:avoid;margin-bottom:16px;border-radius:var(--r-md);overflow:hidden;position:relative}
.grid-gallery img{width:100%;transition:transform .5s var(--ease)}
.grid-gallery figure:hover img{transform:scale(1.05)}
.grid-gallery figcaption{position:absolute;left:0;right:0;bottom:0;padding:26px 16px 12px;color:#fff;font-size:.85rem;
  background:linear-gradient(transparent,rgba(0,0,0,.7));opacity:0;transition:.25s}
.grid-gallery figure:hover figcaption{opacity:1}

/* contact */
.contact-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:start}
.form{background:#fff;border:1px solid #ece9f4;border-radius:var(--r-lg);padding:clamp(24px,4vw,40px);box-shadow:var(--sh)}
.form .row{display:grid;gap:6px;margin-bottom:18px}
.form .two{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form label{font-size:.85rem;font-weight:500;color:#41414d}
.form input,.form select,.form textarea{font:inherit;font-size:.95rem;padding:12px 14px;border:1.5px solid #ddd9e8;border-radius:10px;background:#fbfaff;color:var(--ink);transition:.15s}
.form input:focus,.form select:focus,.form textarea:focus{outline:none;border-color:var(--peri);box-shadow:0 0 0 3px rgba(185,158,249,.25)}
.form textarea{resize:vertical;min-height:110px}
.form .file{font-size:.85rem;color:var(--stone)}
.form .btn{width:100%;justify-content:center;margin-top:4px}
.form .note{font-size:.78rem;color:var(--stone);margin-top:12px;text-align:center}
.msg-ok{background:rgba(31,157,85,.12);border:1px solid rgba(31,157,85,.4);color:#177544;border-radius:10px;padding:14px;margin-top:14px;font-size:.92rem;display:none}
.info-card{background:var(--ink);color:var(--on-dark);border-radius:var(--r-lg);padding:clamp(24px,4vw,36px)}
.info-card .blk{padding:18px 0;border-bottom:1px solid var(--line)}
.info-card .blk:last-child{border-bottom:0}
.info-card .lbl{font-size:.75rem;letter-spacing:.16em;text-transform:uppercase;color:var(--peri);font-weight:500}
.info-card .val{font-size:1.15rem;font-weight:500;margin-top:6px}
.info-card .val a:hover{color:var(--peri)}
.info-card .val.sm{font-size:.98rem;font-weight:400;color:var(--on-dark-soft)}
.mapwrap{margin-top:0;border-radius:var(--r-lg);overflow:hidden;aspect-ratio:21/8;border:1px solid #ece9f4}
.mapwrap iframe{width:100%;height:100%;border:0}

/* footer */
.foot{background:var(--ink);color:var(--on-dark-soft);padding-block:60px 26px}
.foot .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}
.foot img.fl{height:52px;margin-bottom:16px}
.foot h4{color:var(--on-dark);font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;font-weight:500;margin-bottom:16px}
.foot a{display:block;padding:5px 0;font-size:.92rem}
.foot a:hover{color:var(--peri)}
.foot .about p{font-size:.9rem;line-height:1.7}
.foot .bottom{border-top:1px solid var(--line);margin-top:44px;padding-top:22px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:.8rem}
.tag{display:inline-block;background:rgba(185,158,249,.14);color:var(--peri);font-size:.72rem;font-weight:500;letter-spacing:.04em;padding:3px 10px;border-radius:20px;margin-bottom:12px}

/* reveal animation */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}.reveal.d2{transition-delay:.16s}.reveal.d3{transition-delay:.24s}

/* ---------- responsive ---------- */
@media(max-width:980px){
  .cards,.feat,.trust .wrap,.steps{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr}.split.rev .txt{order:0}
  .split .media{aspect-ratio:16/10}
  .contact-grid{grid-template-columns:1fr}
  .foot .cols{grid-template-columns:1fr 1fr}
  .grid-gallery{columns:2}
}
@media(max-width:760px){
  .nav,.hdr-cta .tel{display:none}
  .burger{display:flex}
  .callbar{display:grid}
  body{padding-bottom:52px}
  .cards,.feat,.trust .wrap,.steps,.foot .cols{grid-template-columns:1fr}
  .gallery-strip{grid-template-columns:repeat(2,1fr)}
  .form .two{grid-template-columns:1fr}
  .grid-gallery{columns:1}
  .cmatch .wrap-in{flex-direction:column;align-items:flex-start;gap:22px}
  .hero-media::after{background:linear-gradient(180deg,rgba(11,11,16,.6),rgba(11,11,16,.88))}
}
@media(prefers-reduced-motion:reduce){
  *{scroll-behavior:auto!important}
  .reveal{opacity:1!important;transform:none!important;transition:none!important}
  .card:hover .ph img,.gallery-strip a:hover img,.grid-gallery figure:hover img{transform:none}
}