/* ALU-LOFT — design system
   charcoal aluminium · warm plaster · brass hardware
   Display: Cormorant Garamond · Sans: Archivo */

:root{
  --ink:#1B1D1F;
  --ink-soft:#4A4E52;
  --ink-mute:#7B7E82;
  --paper:#F7F5F0;
  --paper-2:#EFECE3;
  --white:#FFFFFF;
  --line:#DFDACD;
  --brass:#A2823F;
  --brass-dark:#8A6D33;
  --dark-bg:#1B1D1F;
  --dark-text:#F1EEE7;
  --dark-mute:#A6A39C;
  --dark-line:rgba(255,255,255,.15);
  --serif:"Cormorant Garamond", Georgia, "Times New Roman", serif;
  --sans:"Archivo", "Helvetica Neue", Arial, sans-serif;
  --maxw:1200px;
  --gutter:clamp(16px, 4vw, 40px);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit}
h1,h2,h3{margin:0;font-family:var(--serif);font-weight:500;line-height:1.08;text-wrap:balance}
p{margin:0 0 1em}
:focus-visible{outline:2px solid var(--brass);outline-offset:3px}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
}

.wrap{max-width:var(--maxw);margin:0 auto;padding-inline:var(--gutter)}

/* ---------- type helpers ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:12px;
  font-size:11px;font-weight:600;letter-spacing:.22em;text-transform:uppercase;
  color:var(--brass);
}
.eyebrow::before{content:"";width:28px;height:1px;background:var(--brass)}
.h-xl{font-size:clamp(42px,7vw,84px);letter-spacing:-.01em}
.h-lg{font-size:clamp(32px,4.6vw,54px)}
.h-md{font-size:clamp(24px,3vw,32px)}
.lead{font-size:clamp(17px,1.5vw,19px);color:var(--ink-soft);max-width:56ch}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:15px 30px;min-height:48px;
  font:600 12.5px/1 var(--sans);letter-spacing:.14em;text-transform:uppercase;
  text-decoration:none;cursor:pointer;border:1px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.btn svg{flex:none}
.btn-brass{background:var(--brass);color:#fff}
.btn-brass:hover{background:var(--brass-dark)}
.btn-ghost{border-color:currentColor;background:transparent;color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.btn-ghost.on-dark{color:var(--dark-text)}
.btn-ghost.on-dark:hover{background:var(--dark-text);color:var(--ink);border-color:var(--dark-text)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,245,240,.92);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;gap:28px;height:72px}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;margin-right:auto}
.brand svg{width:26px;height:26px}
.brand-name{font:600 16px/1 var(--sans);letter-spacing:.26em}
.nav-links{display:flex;align-items:center;gap:26px;list-style:none;margin:0;padding:0}
.nav-links a{
  font:600 12px/1 var(--sans);letter-spacing:.12em;text-transform:uppercase;
  text-decoration:none;color:var(--ink-soft);padding:8px 0;
  border-bottom:1px solid transparent;transition:color .2s,border-color .2s;
}
.nav-links a:hover{color:var(--ink);border-color:var(--brass)}
.nav .btn{padding:12px 20px;min-height:42px}
.nav-toggle{display:none;background:none;border:1px solid var(--line);padding:10px;cursor:pointer}
.nav-toggle svg{display:block}

@media (max-width: 920px){
  .nav-links{
    display:none;position:absolute;top:72px;left:0;right:0;
    background:var(--paper);border-bottom:1px solid var(--line);
    flex-direction:column;align-items:stretch;gap:0;padding:8px 0 16px;
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:14px var(--gutter);border-bottom:none}
  .nav-toggle{display:block}
  .nav .btn{display:none}
}

/* ---------- hero ---------- */
.hero{position:relative;background:var(--dark-bg);color:var(--dark-text);overflow:hidden}
.hero-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center 40%}
.hero-shade{
  position:absolute;inset:0;
  background:linear-gradient(78deg, rgba(20,21,23,.82) 0%, rgba(20,21,23,.55) 42%, rgba(20,21,23,.12) 78%);
}
.hero-inner{position:relative;padding-block:clamp(90px,15vh,170px) clamp(70px,11vh,130px);max-width:760px}
.hero .eyebrow{color:#CBAe6C}
.hero .eyebrow::before{background:#CBAE6C}
.hero h1{margin:22px 0 20px;color:#fff}
.hero h1 em{font-style:italic;color:#D8BC7E}
.hero p{max-width:52ch;color:#D9D6CF;font-size:clamp(16px,1.5vw,18px)}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-facts{
  position:relative;border-top:1px solid var(--dark-line);
  display:grid;grid-template-columns:repeat(4,1fr);
}
.hero-facts div{
  padding:18px 22px;font:600 11.5px/1.5 var(--sans);letter-spacing:.14em;text-transform:uppercase;
  color:#BFBCB4;border-left:1px solid var(--dark-line);
}
.hero-facts div:first-child{border-left:none}
@media (max-width:760px){
  .hero-facts{grid-template-columns:1fr 1fr}
  .hero-facts div:nth-child(3){border-left:none}
  .hero-facts div{border-top:1px solid var(--dark-line);margin-top:-1px}
}

/* ---------- sections ---------- */
.section{padding-block:clamp(70px,10vw,120px)}
.section-head{max-width:640px;margin-bottom:clamp(36px,5vw,60px)}
.section-head h2{margin:18px 0 16px}
.section.alt{background:var(--paper-2)}
.section.dark{background:var(--dark-bg);color:var(--dark-text)}
.section.dark .lead{color:var(--dark-mute)}
.section.dark .eyebrow{color:#CBAE6C}
.section.dark .eyebrow::before{background:#CBAE6C}

/* ---------- intro split ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,6vw,80px);align-items:center}
.split-media{position:relative}
.split-media img{width:100%;height:auto;aspect-ratio:1/1;object-fit:cover}
.split-media::after{
  content:"";position:absolute;inset:18px;border:1px solid rgba(255,255,255,.55);pointer-events:none;
}
.split h2{margin:18px 0 20px}
.split .sig{
  font-family:var(--serif);font-style:italic;font-size:22px;color:var(--brass);
  margin-top:8px;
}
@media (max-width:860px){.split{grid-template-columns:1fr}}

/* ---------- product grid ---------- */
.prod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.prod-card{background:var(--white);border:1px solid var(--line);display:flex;flex-direction:column;text-decoration:none;transition:border-color .25s}
.prod-card:hover{border-color:var(--brass)}
.prod-media{overflow:hidden;aspect-ratio:4/3;max-width:100%}
.prod-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.16,1,.3,1)}
.prod-card:hover .prod-media img{transform:scale(1.045)}
.prod-body{padding:22px 24px 26px;display:flex;flex-direction:column;gap:8px;flex:1}
.prod-body h3{font-size:26px}
.prod-body p{color:var(--ink-soft);font-size:14.5px;margin:0;flex:1}
.prod-more{font:600 11px/1 var(--sans);letter-spacing:.16em;text-transform:uppercase;color:var(--brass);margin-top:14px}
@media (max-width:980px){.prod-grid{grid-template-columns:1fr 1fr}}
@media (max-width:620px){.prod-grid{grid-template-columns:1fr}}

/* ---------- glazing bars ---------- */
.bars-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.bar-card{background:var(--white);border:1px solid var(--line)}
.bar-card img{aspect-ratio:3/2;object-fit:cover;width:100%}
.bar-body{padding:24px 26px 28px}
.bar-body h3{font-size:24px;margin-bottom:8px}
.bar-body p{color:var(--ink-soft);font-size:14.5px;margin:0}
.bar-tag{display:inline-block;font:600 10.5px/1 var(--sans);letter-spacing:.16em;text-transform:uppercase;
  color:var(--brass);border:1px solid currentColor;padding:6px 10px;margin-bottom:14px}
@media (max-width:720px){.bars-grid{grid-template-columns:1fr}}

/* ---------- hardware / details ---------- */
.hw-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.hw-item{position:relative;overflow:hidden;max-width:100%}
.hw-item img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .6s cubic-bezier(.16,1,.3,1)}
.hw-item:hover img{transform:scale(1.05)}
.hw-item figcaption{
  position:absolute;left:0;bottom:0;right:0;
  padding:36px 18px 14px;
  background:linear-gradient(transparent, rgba(15,16,17,.78));
  font:600 11.5px/1 var(--sans);letter-spacing:.2em;text-transform:uppercase;color:#EDEAE2;
}
.hw-item{margin:0}
@media (max-width:860px){.hw-grid{grid-template-columns:1fr 1fr}}
@media (max-width:540px){.hw-grid{grid-template-columns:1fr}}

/* ---------- design freedom ---------- */
.design-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:10px}
.design-strip img{width:100%;aspect-ratio:3/4;object-fit:cover}
@media (max-width:820px){.design-strip{grid-template-columns:1fr 1fr}}
.design-foot{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin-top:34px}

/* ---------- configurator ---------- */
.config{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(32px,6vw,80px);align-items:center}
.config-shot{border:1px solid var(--line);background:var(--white);padding:14px}
.config-shot img{width:100%}
.steps{list-style:none;margin:26px 0 34px;padding:0;display:flex;flex-direction:column;gap:0}
.steps li{display:flex;gap:18px;padding:18px 0;border-top:1px solid var(--line)}
.steps li:last-child{border-bottom:1px solid var(--line)}
.step-no{font-family:var(--serif);font-size:30px;line-height:1;color:var(--brass);min-width:44px}
.steps b{display:block;font:600 13px/1.4 var(--sans);letter-spacing:.1em;text-transform:uppercase;margin-bottom:4px}
.steps p{margin:0;font-size:14.5px;color:var(--ink-soft)}
@media (max-width:860px){.config{grid-template-columns:1fr}}

/* ---------- benefits ---------- */
.benefits{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--dark-line)}
.benefit{padding:30px 26px 34px;border-left:1px solid var(--dark-line)}
.benefit:first-child{border-left:none}
.benefit svg{color:#CBAE6C;margin-bottom:18px}
.benefit h3{font-size:23px;margin-bottom:10px;color:#fff}
.benefit p{margin:0;font-size:14px;color:var(--dark-mute)}
@media (max-width:920px){
  .benefits{grid-template-columns:1fr 1fr}
  .benefit:nth-child(3){border-left:none}
  .benefit{border-top:1px solid var(--dark-line);margin-top:-1px}
}
@media (max-width:540px){
  .benefits{grid-template-columns:1fr}
  .benefit{border-left:none}
}

/* ---------- gallery ---------- */
.masonry{columns:3 300px;column-gap:18px}
.masonry a{display:block;margin-bottom:18px;overflow:hidden;position:relative}
.masonry img{width:100%;transition:transform .6s cubic-bezier(.16,1,.3,1)}
.masonry a:hover img{transform:scale(1.04)}
.gallery-foot{margin-top:30px;display:flex;gap:14px;flex-wrap:wrap}

/* lightbox */
.lightbox{
  position:fixed;inset:0;z-index:100;display:none;
  background:rgba(16,17,18,.94);
  align-items:center;justify-content:center;
}
.lightbox.open{display:flex}
.lightbox img{max-width:min(92vw,1200px);max-height:86vh;object-fit:contain;box-shadow:0 30px 80px rgba(0,0,0,.5)}
.lb-btn{
  position:absolute;background:none;border:none;color:#E8E5DD;cursor:pointer;padding:14px;
  transition:color .2s;
}
.lb-btn:hover{color:var(--brass)}
.lb-close{top:18px;right:18px}
.lb-prev{left:6px;top:50%;transform:translateY(-50%)}
.lb-next{right:6px;top:50%;transform:translateY(-50%)}
.lb-count{position:absolute;bottom:20px;left:50%;transform:translateX(-50%);
  font:600 12px/1 var(--sans);letter-spacing:.2em;color:#B9B6AE}

/* ---------- contact ---------- */
.contact{display:grid;grid-template-columns:1fr 1.1fr;gap:clamp(36px,6vw,90px)}
.contact h2{color:#fff}
.contact-list{list-style:none;margin:30px 0 0;padding:0;display:flex;flex-direction:column}
.contact-list li{border-top:1px solid var(--dark-line);padding:18px 0;display:flex;flex-direction:column;gap:4px}
.contact-list li:last-child{border-bottom:1px solid var(--dark-line)}
.contact-list .lbl{font:600 10.5px/1 var(--sans);letter-spacing:.2em;text-transform:uppercase;color:var(--dark-mute)}
.contact-list a{font-family:var(--serif);font-size:clamp(22px,2.6vw,30px);text-decoration:none;color:#fff;line-height:1.2}
.contact-list a:hover{color:#D8BC7E}
.socials{display:flex;gap:10px;margin-top:26px}
.socials a{
  display:inline-flex;align-items:center;justify-content:center;width:46px;height:46px;
  border:1px solid var(--dark-line);color:var(--dark-text);transition:border-color .2s,color .2s;
}
.socials a:hover{border-color:var(--brass);color:#D8BC7E}

.form{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form .full{grid-column:1/-1}
.field{display:flex;flex-direction:column;gap:7px}
.field label{font:600 10.5px/1 var(--sans);letter-spacing:.18em;text-transform:uppercase;color:var(--dark-mute)}
.field input,.field textarea{
  background:rgba(255,255,255,.05);border:1px solid var(--dark-line);
  padding:13px 14px;color:var(--dark-text);font:400 15px/1.5 var(--sans);
  transition:border-color .2s;border-radius:0;
}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--brass)}
.field textarea{min-height:130px;resize:vertical}
.form-note{grid-column:1/-1;font-size:12.5px;color:var(--dark-mute);margin:2px 0 0}
.hp{position:absolute;left:-9999px;opacity:0;height:0;overflow:hidden}
@media (max-width:860px){.contact{grid-template-columns:1fr}.form{grid-template-columns:1fr}}

/* ---------- footer ---------- */
.site-footer{background:#141517;color:#8E8B85;border-top:1px solid var(--dark-line)}
.foot{display:flex;flex-wrap:wrap;align-items:center;gap:18px 34px;padding-block:30px}
.foot .brand{margin-right:auto;color:#DBD8D0}
.foot a{font:600 11px/1 var(--sans);letter-spacing:.14em;text-transform:uppercase;text-decoration:none;color:#8E8B85}
.foot a:hover{color:#D8BC7E}
.foot small{width:100%;font-size:12px;letter-spacing:.03em}