/* ==========================================================================
   STM SFI - Sprung Floor Installer
   sprungfloorinstaller.com
   ========================================================================== */

:root{
  --bg:#0a0a0b;
  --bg-2:#121214;
  --bg-3:#191a1d;
  --line:#2b2b31;
  --line-2:#3a3a42;
  --text:#f6f6f5;
  --muted:#a6a6b0;
  --muted-2:#c4c4cc;
  --accent:#c8ff00;
  --accent-dim:#a8d600;
  --accent-ink:#0a0a0b;
  --band:#0f2b2b;

  --serif:"Playfair Display",Georgia,"Times New Roman",serif;
  --sans:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;

  --wrap:1180px;
  --gut:clamp(20px,5vw,48px);
  --r:14px;
  --r-lg:22px;
  --header-h:76px;
}

*,*::before,*::after{box-sizing:border-box}

/* UA rule [hidden]{display:none} loses to .btn{display:inline-flex},
   so el.hidden silently did nothing on buttons. This restores it. */
[hidden]{display:none!important}

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 16px)}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

img{max-width:100%;height:auto;display:block}
a{color:inherit}

h1,h2,h3,h4{font-family:var(--serif);font-weight:600;line-height:1.08;margin:0 0 .5em;letter-spacing:-.01em}
p{margin:0 0 1.1em}

/* --- Accessibility ------------------------------------------------------ */

.skip{
  position:absolute;left:-9999px;top:0;z-index:999;
  background:var(--accent);color:var(--accent-ink);
  padding:14px 22px;font-weight:700;border-radius:0 0 var(--r) 0;
}
.skip:focus{left:0}

:focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:4px}

.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

/* --- Layout ------------------------------------------------------------- */

.wrap{max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gut)}
section{padding:clamp(72px,10vw,132px) 0;position:relative}

.eyebrow{
  display:flex;align-items:center;gap:14px;
  font-size:12px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;
  color:var(--accent);margin:0 0 22px;
}
.eyebrow::before{content:"";width:34px;height:2px;background:var(--accent);flex:none}
.eyebrow--plain{color:var(--muted)}
.eyebrow--plain::before{background:var(--line-2)}

.h-xl{font-size:clamp(2.6rem,7.2vw,5.1rem)}
.h-lg{font-size:clamp(2.1rem,4.6vw,3.5rem)}
.h-md{font-size:clamp(1.5rem,2.6vw,2.1rem)}
.lede{font-size:clamp(1.05rem,1.6vw,1.22rem);color:var(--muted-2);max-width:60ch}

em.hl{font-style:italic;color:var(--accent)}
.u-mark{
  background-image:linear-gradient(var(--accent),var(--accent));
  background-size:100% .14em;background-position:0 92%;background-repeat:no-repeat;
}

/* --- Buttons ------------------------------------------------------------ */

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:17px 34px;border-radius:999px;
  font:inherit;font-size:16px;font-weight:600;
  text-decoration:none;cursor:pointer;white-space:nowrap;
  border:1.5px solid transparent;
  transition:transform .18s ease,background-color .18s ease,border-color .18s ease,color .18s ease;
}
.btn-primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.btn-primary:hover{background:#d7ff33;transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line-2)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.btn-sm{padding:13px 26px;font-size:15px}
.btn-lg{padding:20px 44px;font-size:17px}
@media (prefers-reduced-motion:reduce){.btn:hover{transform:none}}

/* --- Header ------------------------------------------------------------- */

.hdr{
  position:fixed;inset:0 0 auto;z-index:100;
  height:var(--header-h);
  display:flex;align-items:center;
  background:rgba(10,10,11,.72);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background-color .3s ease,border-color .3s ease;
}
.hdr.is-stuck{background:rgba(10,10,11,.94);border-bottom-color:var(--line)}
.hdr .wrap{display:flex;align-items:center;gap:24px;width:100%}

.brand{display:flex;align-items:center;gap:12px;text-decoration:none;flex:none}
.brand svg{flex:none}
.brand-name{font-family:var(--sans);font-size:19px;font-weight:800;letter-spacing:.04em;line-height:1.1}
.brand-sub{font-size:9.5px;font-weight:600;letter-spacing:.15em;text-transform:uppercase;color:var(--muted);line-height:1.1;margin-top:3px}

.nav{margin-left:auto;display:flex;align-items:center;gap:34px}
.nav > .btn{display:none}  /* mobile menu only - header already has a CTA */
.nav a{
  text-decoration:none;font-size:15.5px;font-weight:500;color:var(--muted-2);white-space:nowrap;
  padding:6px 0;position:relative;transition:color .18s ease;
}
.nav a::after{
  content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;
  background:var(--accent);transition:right .25s ease;
}
.nav a:hover{color:var(--text)}
.nav a:hover::after{right:0}

.hdr-actions{display:flex;align-items:center;gap:16px;flex:none}
.tel{
  display:flex;align-items:center;gap:9px;text-decoration:none;
  font-size:16px;font-weight:700;color:var(--text);white-space:nowrap;
}
.tel svg{color:var(--accent);flex:none}
.tel:hover{color:var(--accent)}

.burger{
  display:none;width:46px;height:46px;flex:none;
  background:transparent;border:1.5px solid var(--line-2);border-radius:12px;
  cursor:pointer;padding:0;align-items:center;justify-content:center;
}
.burger span{display:block;width:20px;height:2px;background:var(--text);position:relative;transition:background .2s}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:20px;height:2px;background:var(--text);
  transition:transform .25s ease,top .25s ease;
}
.burger span::before{top:-6px}
.burger span::after{top:6px}
.burger[aria-expanded="true"] span{background:transparent}
.burger[aria-expanded="true"] span::before{top:0;transform:rotate(45deg)}
.burger[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg)}

@media (max-width:1130px){
  .nav{
    position:fixed;inset:var(--header-h) 0 auto;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--bg-2);border-bottom:1px solid var(--line);
    padding:8px var(--gut) 26px;margin:0;
    transform:translateY(-120%);transition:transform .32s cubic-bezier(.4,0,.2,1);
    max-height:calc(100dvh - var(--header-h));overflow-y:auto;
  }
  .nav.is-open{transform:translateY(0)}
  .nav a{padding:17px 0;border-bottom:1px solid var(--line);font-size:17px;white-space:normal}
  .nav a::after{display:none}
  .nav > .btn{display:inline-flex;margin-top:20px;width:100%}
  .burger{display:flex}
  .hdr-actions .tel span{display:none}
  .hdr-actions .btn{display:none}
}

/* --- Hero --------------------------------------------------------------- */

.hero{
  min-height:min(100svh,880px);
  padding-top:calc(var(--header-h) + clamp(48px,9vw,92px));
  padding-bottom:clamp(56px,8vw,88px);
  display:flex;align-items:center;
}
.hero h1{margin-bottom:.34em;max-width:16ch}
.hero .lede{max-width:52ch;margin-bottom:2.2em}
.hero-cta{display:flex;flex-wrap:wrap;gap:15px}

.scroll-hint{
  position:absolute;left:50%;bottom:34px;transform:translateX(-50%);
  font-size:10.5px;font-weight:700;letter-spacing:.22em;text-transform:uppercase;
  color:var(--muted);text-align:center;text-decoration:none;
}
.scroll-hint span{display:block;margin-top:8px;font-size:15px;animation:bob 2.1s ease-in-out infinite}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(7px)}}
@media (prefers-reduced-motion:reduce){.scroll-hint span{animation:none}}
@media (max-width:820px){.scroll-hint{display:none}}

/* --- Trust strip -------------------------------------------------------- */

.strip{border-block:1px solid var(--line);background:var(--bg-2);padding:0}
.strip-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.strip-item{padding:30px var(--gut);border-left:1px solid var(--line)}
.strip-item:first-child{border-left:0}
.strip-item b{display:block;font-size:15.5px;font-weight:700;margin-bottom:3px}
.strip-item span{font-size:13.5px;color:var(--muted)}
@media (max-width:900px){
  .strip-grid{grid-template-columns:1fr 1fr}
  .strip-item:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .strip-item:nth-child(odd){border-left:0}
}

/* --- Split (about) ------------------------------------------------------ */

.split{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(36px,6vw,80px);align-items:center}
@media (max-width:900px){.split{grid-template-columns:1fr}}

.figure{position:relative;border-radius:var(--r-lg);overflow:hidden;background:var(--bg-3);margin:0}
.figure img{width:100%;aspect-ratio:4/3;object-fit:cover}
.figure figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:34px 24px 16px;font-size:12.5px;color:var(--muted-2);
  background:linear-gradient(transparent,rgba(0,0,0,.82));
}

/* --- Services ----------------------------------------------------------- */

.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
@media (max-width:960px){.grid-3{grid-template-columns:1fr 1fr}}
@media (max-width:660px){.grid-3,.grid-2{grid-template-columns:1fr}}

.card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;display:flex;flex-direction:column;
  transition:border-color .22s ease,transform .22s ease;
}
.card:hover{border-color:var(--line-2);transform:translateY(-4px)}
@media (prefers-reduced-motion:reduce){.card:hover{transform:none}}
.card img{width:100%;aspect-ratio:16/11;object-fit:cover}
.card-body{padding:26px 26px 30px;flex:1;display:flex;flex-direction:column}
.card-body h3{font-size:1.32rem;margin-bottom:.45em}
.card-body p{font-size:15.5px;color:var(--muted);margin:0}
.card-tag{
  display:inline-block;align-self:flex-start;margin-top:18px;
  font-size:11.5px;font-weight:700;letter-spacing:.13em;text-transform:uppercase;
  color:var(--accent);
}

/* --- Feature blocks ----------------------------------------------------- */

.feat{display:flex;gap:20px;align-items:flex-start}
.feat-ico{
  width:50px;height:50px;flex:none;border-radius:14px;
  background:rgba(200,255,0,.1);border:1px solid rgba(200,255,0,.26);
  display:flex;align-items:center;justify-content:center;color:var(--accent);
}
.feat h3{font-size:1.2rem;margin-bottom:.35em}
.feat p{font-size:15.5px;color:var(--muted);margin:0}

/* --- Sectors / areas chips ---------------------------------------------- */

.chips{display:flex;flex-wrap:wrap;gap:11px;padding:0;margin:0;list-style:none}
.chips li{
  padding:11px 20px;border:1px solid var(--line);border-radius:999px;
  background:var(--bg-2);font-size:14.5px;color:var(--muted-2);
}
.chips li b{color:var(--text);font-weight:600}

/* --- Gallery ------------------------------------------------------------ */

.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.gallery figure{margin:0;border-radius:var(--r);overflow:hidden;background:var(--bg-3);position:relative}
.gallery img{width:100%;height:100%;object-fit:cover;aspect-ratio:1/1}
.gallery .tall{grid-row:span 2}
.gallery .tall img{aspect-ratio:1/2.06}
.gallery .wide{grid-column:span 2}
.gallery .wide img{aspect-ratio:2.06/1}
@media (max-width:900px){
  .gallery{grid-template-columns:repeat(2,1fr)}
  .gallery .tall{grid-row:span 1}
  .gallery .tall img{aspect-ratio:1/1}
  .gallery .wide{grid-column:span 2}
  .gallery .wide img{aspect-ratio:2.06/1}
}

/* --- FAQ ---------------------------------------------------------------- */

.faq{border-top:1px solid var(--line);max-width:900px}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  padding:26px 46px 26px 0;position:relative;cursor:pointer;list-style:none;
  font-family:var(--serif);font-size:clamp(1.12rem,2vw,1.36rem);font-weight:600;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"";position:absolute;right:8px;top:50%;width:13px;height:13px;
  border-right:2px solid var(--accent);border-bottom:2px solid var(--accent);
  transform:translateY(-70%) rotate(45deg);transition:transform .25s ease;
}
.faq details[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.faq summary:hover{color:var(--accent)}
.faq-a{padding:0 46px 28px 0;color:var(--muted-2);font-size:16px}
.faq-a p:last-child{margin-bottom:0}

/* --- CTA band ----------------------------------------------------------- */

.band{background:var(--band);border-block:1px solid #1c4444}
.band .wrap{display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap}
.band h2{margin:0;max-width:20ch}
.band-actions{display:flex;gap:14px;flex-wrap:wrap}

/* --- Form --------------------------------------------------------------- */

.form-intro{text-align:center;max-width:640px;margin:0 auto clamp(40px,6vw,60px)}
.form-intro .lede{margin-inline:auto}

.form-shell{
  max-width:900px;margin-inline:auto;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:clamp(26px,4.5vw,52px);
}

.steps{display:flex;gap:8px;margin:0 0 34px;padding:0;list-style:none;counter-reset:s}
.steps li{
  flex:1;padding-top:14px;border-top:3px solid var(--line);
  font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);
  counter-increment:s;
}
.steps li::before{content:counter(s) ". "}
.steps li[aria-current="step"]{border-top-color:var(--accent);color:var(--accent)}
.steps li.is-done{border-top-color:var(--accent-dim);color:var(--muted-2)}
@media (max-width:620px){.steps li{font-size:0;padding-top:10px}.steps li::before{content:none}}

.fs{border:0;padding:0;margin:0 0 8px;min-width:0}
.fs legend{
  font-family:var(--serif);font-size:1.42rem;font-weight:600;
  padding:0;margin:0 0 6px;
}
.fs-hint{color:var(--muted);font-size:15px;margin:0 0 26px}

.row{display:grid;grid-template-columns:1fr 1fr;gap:20px 22px}
@media (max-width:660px){.row{grid-template-columns:1fr}}
.f-full{grid-column:1/-1}

.field{display:flex;flex-direction:column;min-width:0}
.field label{
  font-size:11.5px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;
  color:var(--muted-2);margin-bottom:9px;
}
.req{color:var(--accent);margin-left:2px}

.field input,.field select,.field textarea{
  width:100%;font:inherit;font-size:16px;color:var(--text);
  background:var(--bg);border:1px solid var(--line-2);border-radius:11px;
  padding:14px 16px;transition:border-color .18s ease,background-color .18s ease;
  min-width:0;
}
.field textarea{min-height:132px;resize:vertical;line-height:1.55}
.field input::placeholder,.field textarea::placeholder{color:#8d8d99;opacity:1}
.field input:hover,.field select:hover,.field textarea:hover{border-color:#4a4a55}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--accent);background:var(--bg-3);
  box-shadow:0 0 0 3px rgba(200,255,0,.16);
}

.field select{
  appearance:none;-webkit-appearance:none;cursor:pointer;padding-right:44px;
  background-repeat:no-repeat;background-position:right 16px center;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='9' fill='none'%3E%3Cpath d='M1 1l6 6 6-6' stroke='%23a6a6b0' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E");
}
.field select option{background:var(--bg-2);color:var(--text)}

.field input[type="file"]{padding:12px 14px;cursor:pointer;color:var(--muted-2)}
.field input[type="file"]::file-selector-button{
  font:inherit;font-size:14px;font-weight:600;margin-right:14px;
  background:var(--bg-3);color:var(--text);
  border:1px solid var(--line-2);border-radius:8px;padding:9px 16px;cursor:pointer;
}
.field input[type="file"]::file-selector-button:hover{border-color:var(--accent);color:var(--accent)}

.hint{font-size:13px;color:var(--muted);margin:8px 0 0}

.field .err{font-size:13.5px;font-weight:600;color:#ff8f8f;margin:8px 0 0;display:none}
.field.is-invalid input,.field.is-invalid select,.field.is-invalid textarea{border-color:#ff6b6b}
.field.is-invalid .err{display:block}

.form-alert{
  border-radius:12px;padding:16px 20px;margin:0 0 26px;font-size:15.5px;font-weight:500;
  border:1px solid #ff6b6b;background:rgba(255,107,107,.1);color:#ffb4b4;
}

.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}

.form-nav{
  display:flex;gap:14px;align-items:center;flex-wrap:wrap;
  margin-top:32px;padding-top:28px;border-top:1px solid var(--line);
}
.form-nav .spacer{margin-left:auto}
.consent{font-size:13.5px;color:var(--muted);max-width:46ch;margin:0}
.consent a{color:var(--muted-2)}

.js .step{display:none}
.js .step.is-active{display:block}

.btn[aria-busy="true"]{opacity:.65;pointer-events:none}

/* --- Per-room blocks (shown when more than one room) ------------------- */

.rooms-extra{grid-column:1/-1;display:flex;flex-direction:column;gap:16px;margin-top:4px}
.room-card{
  border:1px solid var(--line);border-radius:var(--r);
  background:var(--bg-3);padding:20px 20px 6px;
}
.room-card > h4{
  font-family:var(--sans);font-size:11.5px;font-weight:700;
  letter-spacing:.12em;text-transform:uppercase;color:var(--accent);
  margin:0 0 16px;
}
.rooms-note{
  grid-column:1/-1;font-size:13.5px;color:var(--muted);
  margin:2px 0 0;padding:12px 16px;
  border-left:2px solid var(--accent);background:var(--bg-3);border-radius:0 var(--r) var(--r) 0;
}

/* --- Footer ------------------------------------------------------------- */

.ftr{background:var(--bg-2);border-top:1px solid var(--line);padding:clamp(56px,7vw,84px) 0 0}
.ftr-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:44px}
@media (max-width:900px){.ftr-grid{grid-template-columns:1fr 1fr;gap:36px}}
@media (max-width:560px){.ftr-grid{grid-template-columns:1fr}}
.ftr h4{
  font-family:var(--sans);font-size:11.5px;font-weight:700;
  letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin:0 0 18px;
}
.ftr ul{list-style:none;margin:0;padding:0}
.ftr li{margin-bottom:11px;font-size:15.5px;color:var(--muted-2)}
.ftr a{text-decoration:none;color:var(--muted-2);transition:color .18s}
.ftr a:hover{color:var(--accent)}
.ftr-brand p{font-size:15px;color:var(--muted);max-width:34ch;margin-top:20px}
.ftr-btm{
  margin-top:clamp(44px,6vw,64px);padding:26px 0;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13.5px;color:var(--muted);
}

/* --- Sticky mobile call bar --------------------------------------------- */

.callbar{display:none}
@media (max-width:1130px){
  .callbar{
    display:grid;grid-template-columns:1fr 1fr;gap:10px;
    position:fixed;inset:auto 0 0;z-index:95;
    padding:10px var(--gut) calc(10px + env(safe-area-inset-bottom));
    background:rgba(10,10,11,.95);
    backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
    border-top:1px solid var(--line);
  }
  .callbar .btn{width:100%;padding:15px 10px;font-size:15px}
  body{padding-bottom:84px}
}

/* --- Scroll reveal ------------------------------------------------------ */

.js .reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.js .reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .js .reveal{opacity:1;transform:none;transition:none}
}

/* --- Missing-image placeholder ------------------------------------------
   Applied by site.js when an image 404s, so the page still reads properly
   before the STM photography is uploaded to /assets/img/. */

.img-missing{display:block;width:100%;position:relative;background:var(--bg-3);overflow:hidden}
.gallery .img-missing{height:100%}
.img-missing::before{
  content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(
    135deg,transparent 0 11px,rgba(255,255,255,.028) 11px 22px);
}
.img-missing::after{
  content:attr(data-label);
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  padding:22px;text-align:center;
  font-family:var(--sans);font-size:12.5px;font-weight:600;line-height:1.5;
  letter-spacing:.03em;color:#6f6f7a;
}

/* --- Print -------------------------------------------------------------- */

@media print{
  .hdr,.callbar,.scroll-hint,.band,.gallery{display:none}
  body{background:#fff;color:#000}
}