/* ============================================================
   ARCH+ — design tokens
============================================================ */
:root{
  --bg:        #0d0d0c;
  --bg-alt:    #131211;
  --card:      #1a1917;
  --line:      rgba(255,255,255,.09);
  --line-soft: rgba(255,255,255,.05);
  --gold:      #c9a227;
  --gold-brt:  #e7c567;
  --ivory:     #f4f1ea;
  --muted:     #9c9891;
  --muted-2:   #6f6c66;

  --display: "Fraunces", "Iowan Old Style", Georgia, serif;
  --body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --container: 1240px;
  --gap: 24px;
  --radius: 2px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--bg);
  color:var(--ivory);
  font-family:var(--body);
  font-weight:400;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
h1,h2,h3{ font-family:var(--display); font-weight:500; margin:0 0 .4em; letter-spacing:-.01em; }
p{ margin:0 0 1em; color:var(--muted); }
ul{ margin:0; padding:0; list-style:none; }
.wrap{ max-width:var(--container); margin:0 auto; padding:0 32px; }

::selection{ background:var(--gold); color:#0d0d0c; }

/* subtle film-grain overlay for warmth, purely decorative */
.grain{
  position:fixed; inset:0; pointer-events:none; z-index:2000;
  opacity:.035; mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.eyebrow{
  font-family:var(--body);
  font-size:12px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--gold);
  font-weight:600;
  margin:0 0 14px;
}
.eyebrow.center{ text-align:center; }
.section-title{ font-size:clamp(28px,4vw,42px); }
.section-title.center{ text-align:center; margin-bottom:18px; }
.center{ text-align:center; }

/* gold hairline frame — the signature motif, reused for every photo on the site */
.frame{
  position:relative;
  margin:0;
  padding:8px;
  background:var(--card);
  border:1px solid var(--gold);
  box-shadow:0 18px 40px -18px rgba(0,0,0,.7);
  transition:transform .5s cubic-bezier(.19,1,.22,1), box-shadow .5s ease;
}
.frame img{ display:block; width:100%; height:100%; object-fit:cover; }

/* reveal-on-scroll */
[data-reveal]{ opacity:0; transform:translateY(28px); transition:opacity .8s cubic-bezier(.19,1,.22,1), transform .8s cubic-bezier(.19,1,.22,1); }
[data-reveal].in{ opacity:1; transform:translateY(0); }

.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:15px 30px;
  font-size:14px; font-weight:600; letter-spacing:.03em;
  border-radius:1px; border:1px solid transparent;
  transition:all .3s ease;
  cursor:pointer;
}
.btn-gold{ background:var(--gold); color:#100f0d; }
.btn-gold:hover{ background:var(--gold-brt); transform:translateY(-2px); }
.btn-line{ border-color:var(--line); color:var(--ivory); }
.btn-line:hover{ border-color:var(--gold); color:var(--gold); }

/* ============================================================
   HEADER
============================================================ */
.site-header{
  position:fixed; top:0; left:0; right:0; z-index:900;
  padding:22px 0;
  transition:background .4s ease, padding .4s ease, border-color .4s ease;
  border-bottom:1px solid transparent;
}
.site-header.solid{
  background:rgba(13,13,12,.88);
  backdrop-filter:blur(10px);
  padding:14px 0;
  border-bottom-color:var(--line);
}
.header-inner{ display:flex; align-items:center; justify-content:space-between; }
.brand img{ height:30px; width:auto; }
.main-nav{ display:flex; align-items:center; gap:36px; }
.main-nav a{
  font-size:13px; letter-spacing:.05em; text-transform:uppercase;
  color:var(--ivory); font-weight:500;
  position:relative; padding:4px 0;
}
.main-nav a:not(.nav-cta)::after{
  content:""; position:absolute; left:0; right:0; bottom:-2px; height:1px;
  background:var(--gold); transform:scaleX(0); transform-origin:right;
  transition:transform .35s ease;
}
.main-nav a:not(.nav-cta):hover::after{ transform:scaleX(1); transform-origin:left; }
.nav-cta{
  border:1px solid var(--gold); color:var(--gold) !important;
  padding:9px 18px !important;
}
.nav-cta:hover{ background:var(--gold); color:#100f0d !important; }

.nav-toggle{ display:none; flex-direction:column; justify-content:center; gap:5px; width:32px; height:24px; background:none; border:0; cursor:pointer; padding:0; position:relative; z-index:960; }
.nav-toggle span{ display:block; height:1px; background:var(--ivory); width:100%; transition:transform .3s ease, opacity .3s ease; }
.nav-toggle.open span:nth-child(1){ transform:translateY(6px) rotate(45deg); }
.nav-toggle.open span:nth-child(2){ opacity:0; }
.nav-toggle.open span:nth-child(3){ transform:translateY(-6px) rotate(-45deg); }

.nav-backdrop{
  position:fixed; inset:0; background:rgba(0,0,0,.5); z-index:940;
  opacity:0; visibility:hidden; transition:opacity .4s ease;
}
.nav-backdrop.open{ opacity:1; visibility:visible; }

/* ============================================================
   HERO
============================================================ */
.hero{
  position:relative;
  min-height:100vh;
  display:flex; align-items:center;
  padding-top:120px;
  overflow:hidden;
}
.hero-grid-lines{
  position:absolute; inset:0; z-index:0;
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 70% 60% at 30% 40%, black, transparent 75%);
  opacity:.7;
}
.hero-inner{
  position:relative; z-index:1;
  display:grid; grid-template-columns:1.05fr .95fr; gap:60px; align-items:center;
}
.hero-copy h1{
  font-size:clamp(34px,4.6vw,58px);
  line-height:1.08;
  color:var(--ivory);
}
.hero-copy h1 em{ font-style:italic; color:var(--gold); }
.hero-lead{ font-size:17px; max-width:46ch; margin-top:20px; }
.hero-actions{ display:flex; gap:16px; margin-top:34px; flex-wrap:wrap; }

.hero-stack{ position:relative; height:520px; }
.hero-stack .frame{ position:absolute; overflow:hidden; }
.frame-a{ width:64%; height:66%; top:0; right:0; z-index:2; }
.frame-b{ width:46%; height:42%; bottom:6%; left:0; z-index:3; }
.frame-c{ width:34%; height:30%; top:8%; left:6%; z-index:1; display:none; }

.scroll-cue{
  position:absolute; bottom:34px; left:50%; transform:translateX(-50%);
  display:flex; flex-direction:column; align-items:center; gap:10px;
  font-size:10px; letter-spacing:.2em; text-transform:uppercase; color:var(--muted-2);
  z-index:2;
}
.scroll-cue span{
  width:1px; height:34px; background:linear-gradient(var(--gold), transparent);
  animation:scrollcue 2s ease-in-out infinite;
}
@keyframes scrollcue{ 0%{ opacity:0; transform:scaleY(.4); } 50%{ opacity:1; } 100%{ opacity:0; transform:scaleY(1); } }

/* ============================================================
   ABOUT
============================================================ */
.about{ padding:150px 0; background:var(--bg-alt); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.about-inner{ display:grid; grid-template-columns:.85fr 1.15fr; gap:80px; align-items:center; }
.about-media .frame{ aspect-ratio:4/5; overflow:hidden; }
.about-copy h2{ font-size:clamp(26px,3.4vw,36px); color:var(--ivory); }
.about-copy p{ font-size:15.5px; }
.stat-row{ display:flex; gap:48px; margin-top:38px; padding-top:32px; border-top:1px solid var(--line); }
.stat-num{ display:block; font-family:var(--display); font-size:36px; color:var(--gold); line-height:1; }
.stat-label{ display:block; font-size:12px; color:var(--muted); margin-top:8px; line-height:1.4; }

/* ============================================================
   ARCHITECTS
============================================================ */
.architects{ padding:150px 0 110px; }
.architect-list{ display:flex; flex-direction:column; gap:90px; margin-top:70px; }
.architect{ display:grid; grid-template-columns:280px 1fr; gap:60px; align-items:center; }
.architect.reverse{ grid-template-columns:1fr 280px; }
.architect.reverse .frame{ order:2; }
.architect .frame{ aspect-ratio:4/5; overflow:hidden; }
.architect h3{ font-size:26px; color:var(--ivory); margin-bottom:2px; }
.cau{ color:var(--gold); font-size:12px; letter-spacing:.06em; text-transform:uppercase; margin-bottom:16px; }
.architect-copy p:last-child{ font-size:15px; max-width:52ch; }
.architects-quote{
  margin:90px auto 0; max-width:760px; text-align:center;
  font-family:var(--display); font-style:italic; font-size:22px; line-height:1.5;
  color:var(--ivory);
}
.architects-quote strong{ color:var(--gold); font-style:normal; }

/* ============================================================
   PROCESS
============================================================ */
.process{ padding:110px 0 150px; background:var(--bg-alt); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.process-list{ display:grid; grid-template-columns:repeat(3,1fr); gap:50px; margin-top:64px; }
.process-step{ position:relative; padding-top:26px; border-top:1px solid var(--line); }
.step-num{ font-family:var(--display); font-size:14px; color:var(--gold); letter-spacing:.08em; }
.process-step h3{ font-size:21px; color:var(--ivory); margin:14px 0 10px; }
.process-step p{ font-size:14.5px; }

/* ============================================================
   PORTFOLIO / MASONRY
============================================================ */
.portfolio{ padding:150px 0 130px; }
.portfolio-lead{ max-width:52ch; margin:0 auto 50px; font-size:15.5px; }

.filters{ display:flex; flex-wrap:wrap; gap:10px; justify-content:center; margin-bottom:56px; }
.filter-btn{
  padding:9px 20px; font-size:12px; letter-spacing:.05em; text-transform:uppercase;
  border:1px solid var(--line); border-radius:20px; background:transparent; color:var(--muted);
  cursor:pointer; transition:all .25s ease; font-family:var(--body); font-weight:500;
}
.filter-btn:hover{ border-color:var(--gold); color:var(--gold); }
.filter-btn.active{ background:var(--gold); border-color:var(--gold); color:#100f0d; }

.masonry{
  column-count:1;
  column-gap:22px;
}
@media(min-width:640px){ .masonry{ column-count:2; } }
@media(min-width:1000px){ .masonry{ column-count:3; } }
@media(min-width:1400px){ .masonry{ column-count:4; } }

.m-item{
  break-inside:avoid;
  margin-bottom:22px;
  position:relative;
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--card);
  cursor:pointer;
  transition:border-color .35s ease, transform .5s cubic-bezier(.19,1,.22,1);
}
.m-item:hover{ border-color:var(--gold); transform:translateY(-4px); }
.m-item img{ width:100%; height:auto; display:block; transition:transform .7s cubic-bezier(.19,1,.22,1); }
.m-item:hover img{ transform:scale(1.045); }
.m-caption{
  position:absolute; left:0; right:0; bottom:0; padding:20px 18px 14px;
  background:linear-gradient(to top, rgba(0,0,0,.88), transparent);
  opacity:0; transform:translateY(8px);
  transition:opacity .35s ease, transform .35s ease;
}
.m-item:hover .m-caption{ opacity:1; transform:translateY(0); }
.m-caption .cat{ display:block; font-size:10px; letter-spacing:.14em; text-transform:uppercase; color:var(--gold); margin-bottom:4px; }
.m-caption .ttl{ display:block; font-size:14px; color:var(--ivory); font-weight:500; }
.m-item.hide{ display:none; }

/* ============================================================
   CLIENTS
============================================================ */
.clients{ padding:120px 0 150px; background:var(--bg-alt); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.clients-grid{
  display:grid; grid-template-columns:repeat(2,1fr); gap:16px; margin-top:56px;
}
@media(min-width:640px){ .clients-grid{ grid-template-columns:repeat(4,1fr); } }
.client-card{
  background:#f4f1ea; border:1px solid var(--gold);
  aspect-ratio:16/10; display:flex; align-items:center; justify-content:center;
  padding:18px; transition:transform .4s cubic-bezier(.19,1,.22,1);
}
.client-card:hover{ transform:translateY(-4px); }
.client-card img{ max-width:100%; max-height:100%; object-fit:contain; }

/* ============================================================
   CONTACT
============================================================ */
.contact{ padding:150px 0; }
.contact-inner{ display:grid; grid-template-columns:1fr .95fr; gap:70px; }
.contact-copy h2{ font-size:clamp(28px,4vw,42px); color:var(--ivory); }
.contact-copy p{ max-width:44ch; }
.contact-list{ margin:36px 0; display:flex; flex-direction:column; gap:20px; }
.contact-list li{ display:flex; flex-direction:column; gap:4px; padding-bottom:18px; border-bottom:1px solid var(--line); }
.contact-label{ font-size:11px; letter-spacing:.12em; text-transform:uppercase; color:var(--gold); }
.contact-list a{ font-size:16px; color:var(--ivory); }
.contact-list a:hover{ color:var(--gold); }
.social-row{ display:flex; gap:22px; }
.social-row a{ font-size:13px; letter-spacing:.05em; text-transform:uppercase; color:var(--muted); border-bottom:1px solid var(--line); padding-bottom:4px; }
.social-row a:hover{ color:var(--gold); border-color:var(--gold); }
.contact-map{ border:1px solid var(--line); overflow:hidden; min-height:340px; filter:grayscale(.4) contrast(1.05) brightness(.85); }
.contact-map iframe{ width:100%; height:100%; min-height:340px; border:0; }

/* ============================================================
   FOOTER
============================================================ */
.site-footer{ padding:44px 0; border-top:1px solid var(--line); }
.footer-inner{ display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:20px; }
.footer-logo{ height:22px; opacity:.8; }
.site-footer p{ font-size:12.5px; margin:0; color:var(--muted-2); }
.footer-links{ display:flex; gap:22px; }
.footer-links a{ font-size:12.5px; color:var(--muted); }
.footer-links a:hover{ color:var(--gold); }

/* ============================================================
   LIGHTBOX
============================================================ */
.lightbox{
  position:fixed; inset:0; z-index:2000; background:rgba(8,8,7,.96);
  display:flex; align-items:center; justify-content:center;
  opacity:0; visibility:hidden; transition:opacity .35s ease;
  padding:40px;
}
.lightbox.open{ opacity:1; visibility:visible; }
.lightbox figure{ margin:0; max-width:1100px; max-height:86vh; text-align:center; }
.lightbox img{ max-height:78vh; width:auto; margin:0 auto; border:1px solid var(--gold); }
.lightbox figcaption{ margin-top:16px; color:var(--muted); font-size:13px; letter-spacing:.02em; }
.lb-close,.lb-prev,.lb-next{
  position:absolute; background:none; border:1px solid var(--line); color:var(--ivory);
  cursor:pointer; transition:all .25s ease; display:flex; align-items:center; justify-content:center;
}
.lb-close{ top:26px; right:26px; width:42px; height:42px; font-size:22px; border-radius:50%; }
.lb-prev,.lb-next{ top:50%; transform:translateY(-50%); width:52px; height:52px; font-size:28px; border-radius:50%; }
.lb-prev{ left:26px; } .lb-next{ right:26px; }
.lb-close:hover,.lb-prev:hover,.lb-next:hover{ border-color:var(--gold); color:var(--gold); }

/* ============================================================
   RESPONSIVE
============================================================ */
@media(max-width:980px){
  .hero-inner{ grid-template-columns:1fr; }
  .hero-stack{ height:380px; margin-top:20px; }
  .about-inner{ grid-template-columns:1fr; gap:50px; }
  .about-media{ max-width:420px; }
  .architect,.architect.reverse{ grid-template-columns:1fr; }
  .architect .frame,.architect.reverse .frame{ order:0; max-width:280px; }
  .process-list{ grid-template-columns:1fr; gap:34px; }
  .contact-inner{ grid-template-columns:1fr; }
}
@media(max-width:760px){
  .main-nav{
    position:fixed; top:0; right:0; height:100vh; width:78%; max-width:320px;
    background:var(--bg-alt); border-left:1px solid var(--line);
    flex-direction:column; align-items:flex-start; justify-content:center; gap:26px;
    padding:0 40px;
    transform:translateX(100%); transition:transform .4s cubic-bezier(.19,1,.22,1);
    z-index:950;
  }
  .main-nav.open{ transform:translateX(0); }
  .nav-toggle{ display:flex; }
  .frame-c{ display:block; }
  .wrap{ padding:0 22px; }
  .about,.architects,.process,.portfolio,.clients,.contact{ padding-top:90px; padding-bottom:90px; }
  .stat-row{ gap:30px; flex-wrap:wrap; }
}
@media(prefers-reduced-motion:reduce){
  html{ scroll-behavior:auto; }
  [data-reveal]{ opacity:1; transform:none; transition:none; }
  .m-item, .m-item img, .frame{ transition:none; }
}