/* Richter & Associates Architects — editorial architectural design system */
:root{
  --paper:#f7f7f5; --ink:#15181b; --ink2:#23272b; --grey:#6b7076; --line:#e4e3df;
  --blue:#1e3fae; --blue2:#2a54d6; --black:#101214;
  --serif:'Cormorant Garamond',Georgia,serif;
  --sans:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  --wordmark:'Questrial','Century Gothic','Montserrat',sans-serif;
  --maxw:1280px; --gut:28px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--sans);color:var(--ink);background:var(--paper);
  font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;font-weight:400;line-height:1.08}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 var(--gut)}
.serif{font-family:var(--serif)}
.blue{color:var(--blue)}
.label{font-size:.72rem;letter-spacing:.22em;text-transform:uppercase;font-weight:600;color:var(--blue)}
.muted{color:var(--grey)}
.display{font-family:var(--serif);font-weight:500;line-height:1.02;letter-spacing:-.01em}
h2.display{font-size:clamp(2rem,4.2vw,3.4rem)}
section{padding:96px 0}
.btn{display:inline-flex;align-items:center;gap:.6rem;font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;
  font-weight:600;padding:.95rem 1.7rem;border:1px solid var(--ink);color:var(--ink);background:transparent;
  transition:.25s;cursor:pointer}
.btn:hover{background:var(--ink);color:#fff}
.btn-blue{background:var(--blue);border-color:var(--blue);color:#fff}
.btn-blue:hover{background:var(--blue2);border-color:var(--blue2)}
.btn-light{border-color:rgba(255,255,255,.6);color:#fff}
.btn-light:hover{background:#fff;color:var(--ink);border-color:#fff}
.arrow::after{content:"→";transition:transform .25s}
.arrow:hover::after{transform:translateX(4px)}

/* ── Header ── */
.hdr{position:fixed;top:0;left:0;right:0;z-index:60;transition:background .3s,border-color .3s;
  border-bottom:1px solid transparent}
.hdr .bar{display:flex;align-items:center;justify-content:space-between;height:82px}
.brand{display:flex;align-items:center;gap:.85rem;line-height:1}
.brand .logo{height:50px;width:auto;display:block}
.hdr.over .lk{display:none}.hdr.solid .lw{display:none}
.wm{font-family:var(--wordmark);font-size:.86rem;letter-spacing:.2em;text-transform:uppercase;color:inherit;line-height:1.25;white-space:nowrap}
.wm b{display:block;font-weight:400;font-size:.68rem;letter-spacing:.34em;margin-top:.15rem;opacity:.85}
.nav{display:flex;align-items:center;gap:2rem}
.nav a{font-size:.8rem;letter-spacing:.12em;text-transform:uppercase;font-weight:500;position:relative;padding:4px 0}
.nav a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:1.5px;background:var(--blue);transition:width .25s}
.nav a:hover::after,.nav a.active::after{width:100%}
/* transparent over hero (light text) */
.hdr.over{color:#fff}
.hdr.over .nav a{color:#fff}
.hdr.solid{background:rgba(247,247,245,.94);backdrop-filter:blur(10px);border-color:var(--line);color:var(--ink)}
.hdr.solid .nav a{color:var(--ink)}
.burger{display:none;background:none;border:0;cursor:pointer;width:44px;height:44px;padding:9px}
.burger span{display:block;height:2px;background:currentColor;margin:5px 0;transition:.3s}
.burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ── Hero ── */
.hero{position:relative;min-height:100vh;display:flex;align-items:flex-end;color:#fff;overflow:hidden}
.hero .bg{position:absolute;inset:0;background-size:cover;background-position:center;
  transform:scale(1.04);animation:kenburns 18s ease-out forwards}
@keyframes kenburns{to{transform:scale(1)}}
.hero::after{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,12,14,.45) 0%,rgba(10,12,14,.1) 35%,rgba(10,12,14,.75) 100%)}
.hero .inner{position:relative;z-index:2;padding-bottom:9vh;max-width:960px}
.hero h1{font-family:var(--serif);font-weight:500;font-size:clamp(2.6rem,6.6vw,5.6rem);line-height:1.02;letter-spacing:-.015em}
.hero .sub{font-size:clamp(1rem,1.6vw,1.2rem);max-width:540px;margin:1.3rem 0 2rem;color:#eef0f2}
.hero .meta{position:absolute;top:0;right:0;z-index:2;text-align:right;color:#dfe2e5;
  font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;padding-top:11vh}
.scrollcue{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);z-index:2;color:#fff;
  font-size:.66rem;letter-spacing:.2em;text-transform:uppercase;opacity:.8}

/* ── Intro / about strip ── */
.intro .grid{display:grid;grid-template-columns:1fr 1fr;gap:5rem;align-items:center}
.intro p.lead{font-family:var(--serif);font-size:clamp(1.5rem,2.6vw,2.1rem);line-height:1.3;color:var(--ink2)}
.stats{display:flex;gap:3rem;margin-top:2rem;flex-wrap:wrap}
.stat b{display:block;font-family:var(--serif);font-size:2.6rem;color:var(--blue);line-height:1}
.stat span{font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;color:var(--grey)}

/* ── Section head ── */
.shead{display:flex;justify-content:space-between;align-items:flex-end;gap:2rem;margin-bottom:3rem}
.shead h2{max-width:14ch}

/* ── Work / category grid ── */
.work-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:4px}
.tile{position:relative;overflow:hidden;aspect-ratio:4/3;display:block;background:#ddd}
.tile.lg{grid-column:span 2;aspect-ratio:8/5}
.tile img{width:100%;height:100%;object-fit:cover;transition:transform .9s cubic-bezier(.2,.7,.2,1)}
.tile:hover img{transform:scale(1.06)}
.tile .cap{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:flex-end;
  padding:1.6rem;color:#fff;background:linear-gradient(180deg,transparent 40%,rgba(10,12,14,.72))}
.tile .cap .k{font-size:.68rem;letter-spacing:.2em;text-transform:uppercase;opacity:.85}
.tile .cap .t{font-family:var(--serif);font-size:1.5rem;margin-top:.2rem}
.tile .cap .n{font-size:.75rem;opacity:.85;margin-top:.3rem;letter-spacing:.04em}

/* ── Process steps ── */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:2.4rem}
.step .no{font-family:var(--serif);font-size:2.4rem;color:var(--blue);line-height:1}
.step h3{font-size:1.05rem;font-weight:600;margin:.7rem 0 .5rem;letter-spacing:.01em}
.step p{font-size:.92rem;color:var(--grey)}

/* ── Services ── */
.svc-list{border-top:1px solid var(--line)}
.svc{display:grid;grid-template-columns:70px 1fr 2fr;gap:2rem;align-items:baseline;
  padding:2rem 0;border-bottom:1px solid var(--line);transition:.25s}
.svc:hover{padding-left:12px}
.svc .no{font-family:var(--serif);color:var(--blue);font-size:1.3rem}
.svc h3{font-family:var(--serif);font-size:1.8rem}
.svc p{color:var(--grey);font-size:.98rem;margin:0}

/* ── Page hero (inner) ── */
.phero{padding:160px 0 70px;background:var(--ink);color:#fff}
.phero .label{color:#9db0ff}
.phero h1{font-family:var(--serif);font-weight:500;font-size:clamp(2.4rem,5.5vw,4.4rem);margin-top:.4rem}
.phero p{max-width:620px;color:#c7cbd0;margin-top:1.1rem}

/* ── Gallery ── */
.gallery{columns:3;column-gap:4px}
.gallery a{display:block;margin-bottom:4px;break-inside:avoid;overflow:hidden;background:#e5e5e2}
.gallery img{width:100%;transition:transform .8s cubic-bezier(.2,.7,.2,1)}
.gallery a:hover img{transform:scale(1.05)}
.catnav{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:3rem}
.catnav a{font-size:.74rem;letter-spacing:.1em;text-transform:uppercase;padding:.5rem .9rem;border:1px solid var(--line);color:var(--grey)}
.catnav a:hover{border-color:var(--ink);color:var(--ink)}
.catnav a.active{background:var(--blue);border-color:var(--blue);color:#fff}

/* ── Prose (about) ── */
.prose{max-width:760px}
.prose p{font-size:1.08rem;color:var(--ink2);margin:0 0 1.3rem}
.prose p.big{font-family:var(--serif);font-size:1.7rem;line-height:1.35;color:var(--ink)}

/* ── Insights ── */
.articles{display:grid;grid-template-columns:repeat(2,1fr);gap:2px}
.article{display:block;padding:2.6rem;background:#fff;border:1px solid var(--line);transition:.25s}
.article:hover{background:var(--ink);color:#fff}
.article:hover .muted,.article:hover .label{color:#aab4d8}
.article .label{color:var(--blue)}
.article h3{font-family:var(--serif);font-size:1.5rem;margin:.7rem 0 .6rem}
.article p{font-size:.95rem;color:var(--grey);margin:0}

/* ── Contact ── */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:4rem}
.cblock{margin-bottom:1.8rem}
.cblock .label{display:block;margin-bottom:.35rem}
.cblock a,.cblock p{font-size:1.05rem;margin:0}
.form{display:flex;flex-direction:column;gap:1rem}
.form .row{display:flex;gap:1rem}
.form input,.form textarea{width:100%;padding:.95rem 1rem;border:1px solid var(--line);background:#fff;font:inherit;color:var(--ink)}
.form input:focus,.form textarea:focus{outline:none;border-color:var(--blue)}

/* ── Footer ── */
.foot{background:var(--black);color:#b9bdc2;padding:80px 0 30px;font-size:.92rem}
.foot .top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:2.5rem;padding-bottom:3rem;border-bottom:1px solid rgba(255,255,255,.1)}
.foot .fbrand{color:#fff}.foot .fbrand .logo{height:58px}
.foot .fo{display:block;font-size:.68rem;letter-spacing:.18em;text-transform:uppercase;color:#fff;margin-bottom:.15rem}
.foot h4{color:#fff;font-size:.74rem;letter-spacing:.18em;text-transform:uppercase;margin:0 0 1.1rem;font-weight:600}
.foot a:hover{color:#fff}
.foot ul{list-style:none;padding:0;margin:0}.foot li{margin-bottom:.6rem}
.foot .bottom{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;padding-top:1.6rem;color:#71767c;font-size:.8rem}
.assoc{display:flex;gap:1.3rem;flex-wrap:wrap;margin-top:.4rem}
.assoc span{font-size:.72rem;letter-spacing:.16em;color:#8d9298}

/* ── Project pages ── */
.phero-img{min-height:62vh}
.gallery a{position:relative}
.gallery .gcap{position:absolute;left:0;right:0;bottom:0;padding:1.6rem .9rem .7rem;font-size:.74rem;letter-spacing:.06em;color:#fff;
  background:linear-gradient(to top,rgba(0,0,0,.62),transparent);opacity:0;transition:opacity .3s}
.gallery a:hover .gcap{opacity:1}
.pnav{display:grid;grid-template-columns:1fr 1fr 1fr;gap:4px;margin-top:3rem;border-top:1px solid var(--line);padding-top:2rem}
.pnav a{display:flex;flex-direction:column;gap:.3rem;padding:1rem;border:1px solid var(--line);background:#fff;transition:.25s}
.pnav a:hover{background:var(--ink);color:#fff}.pnav a:hover .label{color:#9db0ff}
.pnav a span:last-child{font-family:var(--serif);font-size:1.25rem}
.pnav .mid{text-align:center;align-items:center}.pnav .r{text-align:right;align-items:flex-end}
.offices{display:grid;grid-template-columns:1fr 1fr;gap:2rem;max-width:760px}
.offices p{margin:.4rem 0 0;font-size:1.08rem;color:var(--ink2)}
/* ── Insights ── */
.articles.three{grid-template-columns:repeat(3,1fr)}
.article.img{position:relative;min-height:380px;padding:0;background-size:cover;background-position:center;color:#fff;border:0;overflow:hidden;display:flex;align-items:flex-end}
.article.img::before{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(10,12,14,.9) 0%,rgba(10,12,14,.45) 55%,rgba(10,12,14,.15) 100%);transition:.3s}
.article.img:hover::before{background:linear-gradient(to top,rgba(30,63,174,.92) 0%,rgba(30,63,174,.5) 60%,rgba(30,63,174,.2) 100%)}
.article.img .in{position:relative;z-index:1;padding:2.4rem}
.article.img .label{color:#9db0ff}.article.img h3{color:#fff;font-size:1.7rem}.article.img p{color:#d6d9dd}
.article.img .more{display:inline-block;margin-top:1rem;font-size:.76rem;letter-spacing:.14em;text-transform:uppercase;font-weight:600}
.prose .cta{margin-top:3rem;padding:2.4rem;background:#fff;border:1px solid var(--line)}
.prose .cta h3{font-family:var(--serif);font-size:1.7rem;margin-bottom:.6rem}
.prose .cta p{margin-bottom:1.4rem}
.cblock .wa{font-size:.9rem;color:var(--blue);font-weight:600}

/* ── Lightbox ── */
.lb{position:fixed;inset:0;background:rgba(10,12,14,.95);z-index:200;display:none;align-items:center;justify-content:center}
.lb.open{display:flex}
.lb figure{margin:0;text-align:center}.lb img{max-width:92vw;max-height:84vh;object-fit:contain;margin:0 auto}
.lb figcaption{color:#c7cbd0;font-size:.8rem;letter-spacing:.06em;margin-top:.8rem}
.lb .x{position:absolute;top:22px;right:26px;color:#fff;font-size:2rem;cursor:pointer;line-height:1}
.lb .nav-btn{position:absolute;top:50%;transform:translateY(-50%);color:#fff;font-size:2.4rem;cursor:pointer;padding:1rem;user-select:none;opacity:.8}
.lb .prev{left:12px}.lb .next{right:12px}

/* ── Responsive ── */
@media(max-width:960px){
  .nav{position:fixed;inset:82px 0 auto 0;flex-direction:column;align-items:flex-start;gap:0;
    background:var(--ink);padding:0 var(--gut);max-height:0;overflow:hidden;
    transition:max-height .35s,padding .35s;visibility:hidden}
  .nav.open{max-height:80vh;padding:1rem var(--gut) 1.6rem;visibility:visible}
  .nav a{color:#fff !important;width:100%;padding:.9rem 0;border-bottom:1px solid rgba(255,255,255,.08)}
  .burger{display:block}
  .intro .grid,.contact-grid{grid-template-columns:1fr;gap:2.5rem}
  .work-grid{grid-template-columns:1fr 1fr}
  .tile.lg{grid-column:span 2}
  .steps{grid-template-columns:1fr 1fr}
  .gallery{columns:2}
  .articles,.articles.three{grid-template-columns:1fr}
  .pnav{grid-template-columns:1fr}.pnav .r,.pnav .mid{text-align:left;align-items:flex-start}
  .offices{grid-template-columns:1fr}
  .foot .top{grid-template-columns:1fr 1fr}
  .svc{grid-template-columns:40px 1fr;gap:1rem}.svc p{grid-column:1/-1}
}
@media(max-width:560px){
  section{padding:64px 0}
  .shead{flex-direction:column;align-items:flex-start;gap:1.2rem}.shead h2{max-width:none}
  .label,.tile .cap .k,.tile .cap .n,.assoc span,.gallery .gcap,.foot .fo,.catnav a,.hero .meta,.scrollcue,.foot .bottom{font-size:.78rem}
  .wm b{font-size:.72rem}
  .foot li{margin-bottom:.9rem}.foot a,.cblock a,.cblock .wa{display:inline-block;padding:.3rem 0}
  .catnav a{padding:.75rem 1rem}.nav a{padding:1rem 0}
  .pnav a{padding:1.1rem}
  .work-grid,.gallery{grid-template-columns:1fr;columns:1}
  .tile.lg{grid-column:span 1}
  .steps{grid-template-columns:1fr}
  .form .row{flex-direction:column}
  .foot .top{grid-template-columns:1fr}
  .hero .meta{display:none}
  .wm{font-size:.7rem;letter-spacing:.14em}.brand .logo{height:40px}
}