/* ============================================================
   Commercial Glazing UK — commercialglazinguk.com
   Identity: deep navy + royal blue + charcoal. Signature motif:
   glazed curtain-wall grid (mullion lines) + glass sheen.
   ============================================================ */
:root{
  --navy:#0f264d;
  --navy-deep:#0b1c3a;
  --royal:#1e56b8;
  --royal-bright:#2f6fe0;
  --char:#2d3440;
  --ink:#16203a;
  --muted:#5a6a86;
  --line:#dde6f3;
  --line-strong:#c8d6ea;
  --sky:#eef3fb;
  --glass:#f5f9ff;
  --white:#ffffff;
  --accent:#6aa6ff;
  --ok:#1f9d6b;
  --shadow:0 1px 2px rgba(15,38,77,.06),0 12px 30px rgba(15,38,77,.08);
  --shadow-lg:0 18px 50px rgba(11,28,58,.18);
  --radius:14px;
  --radius-sm:10px;
  --maxw:1200px;
  --display:"Space Grotesk",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --body:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--body);color:var(--ink);background:var(--white);
  line-height:1.62;font-size:17px;font-weight:400;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{font-family:var(--display);color:var(--navy);line-height:1.12;
  letter-spacing:-.02em;margin:0 0 .5em;font-weight:600}
h1{font-size:clamp(2.05rem,5.2vw,3.5rem);font-weight:700}
h2{font-size:clamp(1.7rem,3.6vw,2.5rem)}
h3{font-size:clamp(1.18rem,2vw,1.4rem)}
p{margin:0 0 1rem}
a{color:var(--royal);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block;height:auto}
ul{margin:0 0 1rem;padding-left:1.1rem}
strong{font-weight:600;color:var(--navy)}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.eyebrow{font-family:var(--display);font-weight:600;letter-spacing:.16em;
  text-transform:uppercase;font-size:.74rem;color:var(--royal);margin:0 0 .7rem}
.center{text-align:center}
:focus-visible{outline:3px solid var(--royal-bright);outline-offset:2px;border-radius:4px}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:.5rem;justify-content:center;
  font-family:var(--display);font-weight:600;font-size:1rem;letter-spacing:-.01em;
  padding:.85rem 1.5rem;border-radius:11px;border:2px solid transparent;cursor:pointer;
  transition:transform .15s ease,box-shadow .15s ease,background .15s ease;text-decoration:none;line-height:1}
.btn:hover{text-decoration:none;transform:translateY(-2px)}
.btn-primary{background:var(--royal);color:#fff;box-shadow:0 8px 20px rgba(30,86,184,.32)}
.btn-primary:hover{background:var(--royal-bright);box-shadow:0 12px 26px rgba(30,86,184,.42)}
.btn-ghost{background:transparent;color:var(--navy);border-color:var(--line-strong)}
.btn-ghost:hover{border-color:var(--royal);color:var(--royal)}
.btn-white{background:#fff;color:var(--navy)}
.btn-white:hover{background:#eef3fb}
.btn-lg{padding:1.02rem 1.9rem;font-size:1.08rem}
.btn-block{width:100%}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.93);
  backdrop-filter:saturate(160%) blur(8px);border-bottom:1px solid var(--line)}
.topbar{background:var(--navy-deep);color:#cdddf3;font-size:.82rem}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;gap:1rem;
  padding-top:7px;padding-bottom:7px}
.topbar a{color:#fff;font-weight:500}
.topbar .tb-points{display:flex;gap:1.4rem}
.topbar .tb-points span{display:inline-flex;align-items:center;gap:.4rem}
.topbar svg{width:15px;height:15px;flex:none;color:var(--accent)}
.headrow{display:flex;align-items:center;justify-content:space-between;gap:1rem;
  padding-top:13px;padding-bottom:13px}
.brand{display:flex;align-items:center;flex:none}
.brand img{height:46px;width:auto}
.nav{display:flex;align-items:center;gap:1.6rem}
.nav a{color:var(--ink);font-weight:500;font-size:.96rem}
.nav a:hover{color:var(--royal);text-decoration:none}
.head-cta{display:flex;align-items:center;gap:.8rem}
.head-phone{font-family:var(--display);font-weight:700;color:var(--navy);font-size:1.06rem;
  white-space:nowrap;display:inline-flex;align-items:center;gap:.45rem}
.head-phone svg{width:18px;height:18px;color:var(--royal)}
.head-phone small{display:block;font-family:var(--body);font-weight:500;font-size:.68rem;
  color:var(--muted);letter-spacing:.02em}
.navtoggle{display:none;background:none;border:1.5px solid var(--line-strong);border-radius:9px;
  width:46px;height:42px;cursor:pointer;align-items:center;justify-content:center}
.navtoggle svg{width:24px;height:24px;color:var(--navy)}

/* ---------- hero ---------- */
.hero{position:relative;background:var(--navy-deep);color:#fff;overflow:hidden;isolation:isolate}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2}
.hero::after{content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(100deg,rgba(11,28,58,.93) 30%,rgba(11,28,58,.62) 58%,rgba(11,28,58,.28) 100%)}
.hero .wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:2.6rem;align-items:center;
  padding-top:64px;padding-bottom:64px}
.hero-tag{display:inline-flex;align-items:center;gap:.5rem;background:rgba(106,166,255,.14);
  border:1px solid rgba(106,166,255,.35);color:#cfe0fb;font-family:var(--display);font-weight:600;
  font-size:.78rem;letter-spacing:.04em;padding:.4rem .85rem;border-radius:100px;margin-bottom:1.1rem}
.hero h1{color:#fff;margin-bottom:.7rem}
.hero h1 .hl{color:var(--accent)}
.hero-sub{font-size:1.15rem;color:#d3e0f4;max-width:34ch;margin-bottom:1.4rem}
.hero-points{list-style:none;padding:0;margin:0 0 1.6rem;display:grid;gap:.6rem;max-width:40ch}
.hero-points li{display:flex;align-items:flex-start;gap:.6rem;font-size:1rem;color:#e6eefb}
.hero-points svg{width:21px;height:21px;flex:none;color:var(--accent);margin-top:1px}
.hero-actions{display:flex;flex-wrap:wrap;gap:.8rem;align-items:center}
.hero-risk{margin-top:1rem;font-size:.92rem;color:#aac3e8;display:flex;align-items:center;gap:.5rem}
.hero-risk svg{width:17px;height:17px;color:var(--accent)}

/* quote card */
.quote-card{background:#fff;color:var(--ink);border-radius:16px;box-shadow:var(--shadow-lg);
  padding:26px 24px;position:relative;overflow:hidden}
.quote-card::before{content:"";position:absolute;top:0;left:0;right:0;height:5px;
  background:linear-gradient(90deg,var(--royal),var(--accent))}
.quote-card h2{font-size:1.4rem;margin-bottom:.2rem}
.quote-card .qc-sub{color:var(--muted);font-size:.92rem;margin-bottom:1rem}
.field{margin-bottom:.7rem}
.field label{display:block;font-size:.8rem;font-weight:600;color:var(--navy);margin-bottom:.25rem}
.field input,.field select,.field textarea{width:100%;padding:.7rem .8rem;border:1.5px solid var(--line-strong);
  border-radius:9px;font-family:var(--body);font-size:.96rem;color:var(--ink);background:#fcfdff;transition:border .15s}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--royal);
  box-shadow:0 0 0 3px rgba(30,86,184,.12)}
.field textarea{min-height:74px;resize:vertical}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:.7rem}
.consent{display:flex;gap:.55rem;align-items:flex-start;margin:.4rem 0 .85rem;font-size:.82rem;color:var(--muted)}
.consent input{margin-top:3px;width:17px;height:17px;flex:none;accent-color:var(--royal)}
.hp{position:absolute!important;left:-9999px!important;width:1px;height:1px;overflow:hidden}
.form-note{font-size:.78rem;color:var(--muted);text-align:center;margin-top:.7rem}
.form-status{font-size:.9rem;margin-top:.7rem;padding:.6rem .8rem;border-radius:8px;display:none}
.form-status.ok{display:block;background:#e7f6ee;color:#176844;border:1px solid #bce6cf}
.form-status.err{display:block;background:#fdecec;color:#9b2c2c;border:1px solid #f3c9c9}

/* ---------- trust strip ---------- */
.trust{background:var(--sky);border-bottom:1px solid var(--line)}
.trust .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:1rem;
  padding-top:18px;padding-bottom:18px}
.trust-item{display:flex;align-items:center;gap:.6rem;font-weight:600;color:var(--navy);
  font-size:.92rem;font-family:var(--display);letter-spacing:-.01em}
.trust-item svg{width:24px;height:24px;flex:none;color:var(--royal)}

/* ---------- sections ---------- */
.section{padding:74px 0}
.section.tight{padding:56px 0}
.section-head{max-width:62ch;margin:0 auto 2.6rem;text-align:center}
.section-head p{color:var(--muted);font-size:1.08rem;margin-top:.3rem}
.section.alt{background:var(--glass);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.lead-answer{max-width:74ch;margin:0 auto 2rem;font-size:1.16rem;color:var(--ink);text-align:center}
.lead-answer strong{color:var(--navy)}

/* glazed-grid divider motif */
.gridline{height:3px;background-image:repeating-linear-gradient(90deg,var(--line-strong) 0 1px,transparent 1px 46px);opacity:.8}

/* ---------- service cards ---------- */
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 22px;overflow:hidden;transition:transform .18s ease,box-shadow .18s ease,border-color .18s;
  display:flex;flex-direction:column}
.card::after{content:"";position:absolute;top:-60%;left:-30%;width:60%;height:220%;
  background:linear-gradient(115deg,transparent,rgba(106,166,255,.16),transparent);
  transform:translateX(-30%);transition:transform .55s ease;pointer-events:none}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--line-strong)}
.card:hover::after{transform:translateX(280%)}
.card-ico{width:50px;height:50px;border-radius:11px;background:var(--sky);display:flex;align-items:center;
  justify-content:center;margin-bottom:14px}
.card-ico svg{width:27px;height:27px;color:var(--royal)}
.card h3{margin-bottom:.4rem;font-size:1.16rem}
.card p{font-size:.94rem;color:var(--muted);margin-bottom:1rem}
.card .card-link{margin-top:auto;font-family:var(--display);font-weight:600;font-size:.9rem;
  color:var(--royal);display:inline-flex;align-items:center;gap:.35rem}
.card .card-link svg{width:16px;height:16px;transition:transform .15s}
.card:hover .card-link svg{transform:translateX(3px)}

/* ---------- features (why choose) ---------- */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feature{display:flex;gap:1rem;align-items:flex-start}
.feature-ico{width:46px;height:46px;border-radius:11px;flex:none;background:var(--navy);
  display:flex;align-items:center;justify-content:center}
.feature-ico svg{width:24px;height:24px;color:var(--accent)}
.feature h3{font-size:1.12rem;margin-bottom:.25rem}
.feature p{font-size:.95rem;color:var(--muted);margin:0}

/* ---------- areas ---------- */
.areas-wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:2.4rem;align-items:center}
.area-list{columns:3;column-gap:1.4rem;list-style:none;padding:0;margin:1.2rem 0 0}
.area-list li{padding:.32rem 0;font-size:.95rem;color:var(--ink);display:flex;align-items:center;gap:.45rem;break-inside:avoid}
.area-list svg{width:15px;height:15px;color:var(--royal);flex:none}
.areas-card{background:var(--navy);color:#fff;border-radius:var(--radius);padding:30px 28px;box-shadow:var(--shadow)}
.areas-card h3{color:#fff}
.areas-card p{color:#cdddf3;font-size:.98rem}
.areas-card .btn{margin-top:.6rem}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:step}
.step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px}
.step-num{font-family:var(--display);font-weight:700;font-size:1.05rem;color:#fff;background:var(--royal);
  width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.step h3{font-size:1.1rem;margin-bottom:.3rem}
.step p{font-size:.92rem;color:var(--muted);margin:0}

/* ---------- FAQ ---------- */
.faq{max-width:820px;margin:0 auto}
.faq details{border:1px solid var(--line);border-radius:11px;margin-bottom:.7rem;background:#fff;overflow:hidden}
.faq details[open]{border-color:var(--line-strong);box-shadow:var(--shadow)}
.faq summary{cursor:pointer;padding:1.05rem 1.2rem;font-family:var(--display);font-weight:600;
  color:var(--navy);font-size:1.04rem;list-style:none;display:flex;justify-content:space-between;
  align-items:center;gap:1rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary .chev{flex:none;width:20px;height:20px;color:var(--royal);transition:transform .2s}
.faq details[open] summary .chev{transform:rotate(180deg)}
.faq .faq-body{padding:0 1.2rem 1.15rem;color:var(--muted);font-size:.98rem}

/* ---------- CTA band ---------- */
.cta-band{position:relative;background:var(--navy-deep);color:#fff;overflow:hidden;isolation:isolate}
.cta-band::before{content:"";position:absolute;inset:0;z-index:-1;opacity:.5;
  background-image:repeating-linear-gradient(90deg,rgba(106,166,255,.16) 0 1px,transparent 1px 54px),
  repeating-linear-gradient(0deg,rgba(106,166,255,.10) 0 1px,transparent 1px 54px)}
.cta-band .wrap{padding-top:60px;padding-bottom:60px;text-align:center}
.cta-band h2{color:#fff}
.cta-band p{color:#cdddf3;max-width:56ch;margin:0 auto 1.6rem;font-size:1.1rem}
.cta-actions{display:flex;gap:.9rem;justify-content:center;flex-wrap:wrap}

/* ---------- content (service/privacy pages) ---------- */
.page-hero{background:var(--navy-deep);color:#fff;position:relative;isolation:isolate;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;z-index:-1;opacity:.42;
  background-image:repeating-linear-gradient(90deg,rgba(106,166,255,.16) 0 1px,transparent 1px 54px),
  repeating-linear-gradient(0deg,rgba(106,166,255,.10) 0 1px,transparent 1px 54px)}
.page-hero .wrap{padding-top:52px;padding-bottom:52px}
.page-hero h1{color:#fff;max-width:20ch}
.page-hero p{color:#d3e0f4;max-width:58ch;font-size:1.12rem;margin-bottom:0}
.crumbs{font-size:.84rem;color:#aac3e8;margin-bottom:1rem}
.crumbs a{color:#cfe0fb}
.crumbs span{opacity:.6;margin:0 .35rem}
.content{display:grid;grid-template-columns:1fr 340px;gap:2.6rem;align-items:start}
.prose h2{margin-top:2rem}
.prose h2:first-child{margin-top:0}
.prose ul li{margin-bottom:.4rem}
.prose .check{list-style:none;padding:0}
.prose .check li{display:flex;gap:.6rem;align-items:flex-start;margin-bottom:.55rem}
.prose .check svg{width:21px;height:21px;color:var(--royal);flex:none;margin-top:2px}
.callout{background:var(--glass);border-left:4px solid var(--royal);border-radius:8px;padding:1rem 1.2rem;margin:1.4rem 0}
.callout p{margin:0;color:var(--ink)}
.sidebar{position:sticky;top:96px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 22px;box-shadow:var(--shadow)}
.sidebar h3{font-size:1.2rem}
.sidebar .side-phone{font-family:var(--display);font-weight:700;font-size:1.3rem;color:var(--navy);margin:.3rem 0 1rem;display:block}
.related{list-style:none;padding:0;margin:0}
.related li{border-top:1px solid var(--line)}
.related li:first-child{border-top:none}
.related a{display:block;padding:.6rem 0;color:var(--ink);font-weight:500;font-size:.95rem}
.related a:hover{color:var(--royal);text-decoration:none}

/* ---------- footer ---------- */
.site-footer{background:var(--navy-deep);color:#aebfd8;font-size:.92rem;padding:54px 0 0}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:2rem;padding-bottom:38px}
.foot-logo{background:#fff;border-radius:11px;padding:12px 14px;display:inline-block;margin-bottom:1rem}
.foot-logo img{height:42px}
.site-footer h4{color:#fff;font-family:var(--display);font-size:.82rem;letter-spacing:.12em;
  text-transform:uppercase;margin:0 0 1rem}
.foot-links{list-style:none;padding:0;margin:0}
.foot-links li{margin-bottom:.55rem}
.foot-links a{color:#aebfd8}
.foot-links a:hover{color:#fff;text-decoration:none}
.site-footer .foot-p{color:#9fb2cf;max-width:34ch}
.foot-contact a{color:#fff;font-weight:600}
.foot-bottom{border-top:1px solid rgba(255,255,255,.12);padding:18px 0;display:flex;
  justify-content:space-between;align-items:center;gap:1rem;flex-wrap:wrap;font-size:.82rem;color:#8ea2c2}
.foot-bottom a{color:#bcd0ee}
.credit a{color:#fff;font-weight:600}

/* ---------- sticky mobile bar ---------- */
.mobilebar{display:none;position:fixed;bottom:0;left:0;right:0;z-index:70;
  background:#fff;border-top:1px solid var(--line);box-shadow:0 -6px 24px rgba(11,28,58,.12);
  padding:9px 12px env(safe-area-inset-bottom);grid-template-columns:1fr 1fr;gap:9px}
.mobilebar .btn{padding:.78rem .5rem;font-size:.96rem}

/* ---------- responsive ---------- */
@media(max-width:980px){
  .hero .wrap{grid-template-columns:1fr;gap:2rem;padding-top:46px;padding-bottom:46px}
  .quote-card{max-width:520px}
  .cards{grid-template-columns:repeat(2,1fr)}
  .features{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr 1fr}
  .areas-wrap{grid-template-columns:1fr;gap:1.6rem}
  .content{grid-template-columns:1fr}
  .sidebar{position:static}
  .foot-grid{grid-template-columns:1fr 1fr}
  .topbar .tb-points{display:none}
}
@media(max-width:720px){
  body{font-size:16px}
  .nav,.head-phone small{display:none}
  .navtoggle{display:flex}
  .head-cta .btn-ghost{display:none}
  .nav.open{display:flex;position:absolute;top:100%;left:0;right:0;flex-direction:column;
    background:#fff;border-bottom:1px solid var(--line);padding:14px 22px;gap:.2rem;box-shadow:var(--shadow)}
  .nav.open a{padding:.7rem 0;border-bottom:1px solid var(--line);width:100%}
  .area-list{columns:2}
  .mobilebar{display:grid}
  .section{padding:52px 0}
  body{padding-bottom:64px}
  .foot-grid{grid-template-columns:1fr}
  .foot-bottom{flex-direction:column;text-align:center}
}
@media(max-width:430px){
  .cards,.features,.steps{grid-template-columns:1fr}
  .grid2{grid-template-columns:1fr}
  .area-list{columns:1}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .card::after{display:none}
}