/* ============================================================
   BLACK DIAMOND FENCES — Design System
   Signature: "The Line System" — vertical bar rhythm echoing
   slat fencing, used in hero reveals, dividers, nav state & CTAs.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root{
  /* Color */
  --onyx:        #0a0a0a;
  --charcoal-1:  #161513;
  --charcoal-2:  #201f1c;
  --line:        #34322d;
  --concrete:    #ece9e3;
  --concrete-2:  #ddd9d0;
  --white:       #faf9f6;
  --steel:       #9aa0a6;
  --steel-dim:   #6b6f74;
  --bronze:      #a07f4e;
  --bronze-dim:  #6e5b3c;

  /* Type */
  --f-display: 'Space Grotesk', sans-serif;
  --f-body: 'Inter', sans-serif;
  --f-mono: 'IBM Plex Mono', monospace;

  /* Layout */
  --maxw: 1280px;
  --pad: clamp(20px, 5vw, 64px);
  --nav-h: 84px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family:var(--f-body);
  background:var(--white);
  color:var(--onyx);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{ font-family:var(--f-display); font-weight:600; line-height:1.08; margin:0; letter-spacing:-0.01em; }
p{ margin:0; }
button{ font-family:inherit; cursor:pointer; }

@media (prefers-reduced-motion: reduce){
  *{ animation-duration:0.01ms !important; animation-iteration-count:1 !important; transition-duration:0.01ms !important; scroll-behavior:auto !important; }
}

:focus-visible{ outline:2px solid var(--bronze); outline-offset:3px; }

.container{ max-width:var(--maxw); margin:0 auto; padding-left:var(--pad); padding-right:var(--pad); }

.eyebrow{
  font-family:var(--f-mono);
  font-size:12px;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--bronze);
  display:flex;
  align-items:center;
  gap:10px;
}
.eyebrow::before{
  content:'';
  width:22px; height:1px;
  background:var(--bronze);
  display:inline-block;
}

/* ---------- Line rhythm signature (fence-slat motif) ---------- */
.slat-rule{
  display:flex;
  align-items:flex-end;
  gap:5px;
  height:26px;
  width:fit-content;
}
.slat-rule span{
  display:block;
  width:3px;
  background:var(--bronze);
  opacity:.85;
}
.slat-rule.dark span{ background:var(--onyx); }
.slat-rule.light span{ background:var(--concrete-2); }

.slat-divider{
  display:flex;
  gap:clamp(4px,1vw,8px);
  height:48px;
  align-items:flex-end;
  overflow:hidden;
}
.slat-divider span{
  flex:1;
  background:var(--line);
  min-width:2px;
}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--f-mono);
  font-size:13px;
  letter-spacing:0.06em;
  text-transform:uppercase;
  padding:16px 28px;
  border:1px solid transparent;
  transition:all .25s ease;
  white-space:nowrap;
}
.btn svg{ width:14px; height:14px; transition:transform .25s ease; flex-shrink:0; }
.btn:hover svg{ transform:translateX(4px); }

.btn-primary{ background:var(--bronze); color:var(--onyx); }
.btn-primary:hover{ background:var(--white); }

.btn-outline-light{ border-color:rgba(250,249,246,.4); color:var(--white); }
.btn-outline-light:hover{ border-color:var(--white); background:rgba(250,249,246,.08); }

.btn-outline-dark{ border-color:rgba(10,10,10,.3); color:var(--onyx); }
.btn-outline-dark:hover{ border-color:var(--onyx); background:rgba(10,10,10,.05); }

.btn-block{ width:100%; justify-content:center; }

/* ============ Header / Nav ============ */
.site-header{
  position:fixed; top:0; left:0; right:0; z-index:1000;
  height:var(--nav-h);
  display:flex; align-items:center;
  transition:background .3s ease, border-color .3s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-solid{
  background:rgba(10,10,10,.94);
  backdrop-filter:blur(8px);
  border-bottom-color:var(--line);
}
.nav-row{
  width:100%;
  display:flex; align-items:center; justify-content:space-between;
  gap:24px;
}
.logo{
  font-family:var(--f-display);
  font-weight:700;
  font-size:19px;
  color:#000 !important;
  letter-spacing:-0.01em;
  display:flex; align-items:center; gap:10px;
}
.logo .mark{ display:flex; gap:3px; align-items:flex-end; }
.logo .mark span{ width:3px; background:var(--bronze); }
.logo .mark span:nth-child(1){ height:10px; }
.logo .mark span:nth-child(2){ height:16px; }
.logo .mark span:nth-child(3){ height:13px; }

.primary-nav{ display:flex; align-items:center; gap:2px; }
.primary-nav > li{ position:relative; }
.primary-nav > li > a{
  display:block;
  padding:12px 16px;
  font-size:14px;
  color:#000;
  transition:color .2s ease;
  position:relative;
}
.primary-nav > li > a::after{
  content:''; position:absolute; left:16px; right:16px; bottom:8px; height:1px;
  background:var(--bronze); transform:scaleX(0); transform-origin:left; transition:transform .25s ease;
}
.primary-nav > li > a:hover{ color:var(--white); }
.primary-nav > li > a:hover::after{ transform:scaleX(1); }
.primary-nav > li.current > a{ color:#000; }
.primary-nav > li.current > a::after{ transform:scaleX(1); }

.has-dropdown .dropdown{
  position:absolute; top:100%; left:0;
  min-width:230px;
  background:var(--charcoal-1);
  border:1px solid var(--line);
  padding:8px;
  opacity:0; visibility:hidden; transform:translateY(6px);
  transition:all .2s ease;
}
.has-dropdown:hover .dropdown, .has-dropdown:focus-within .dropdown{
  opacity:1; visibility:visible; transform:translateY(0);
}
.dropdown a{
  display:block; padding:11px 14px; font-size:13.5px; color:var(--concrete-2);
  border-left:2px solid transparent;
}
.dropdown a:hover{ color:var(--white); border-left-color:var(--bronze); background:rgba(255,255,255,.03); }

.nav-cta-wrap{ display:flex; align-items:center; gap:18px; }
.nav-cta{
  font-family:var(--f-mono); font-size:12.5px; letter-spacing:.05em; text-transform:uppercase;
  color:var(--onyx); background:var(--bronze); padding:12px 20px;
  transition:background .2s ease;
}
.nav-cta:hover{ background:var(--white); }

.menu-toggle{
  display:none; background:none; border:none; width:40px; height:40px;
  position:relative; z-index:1100;
}
.menu-toggle span{
  display:block; position:absolute; left:8px; right:8px; height:2px; background:var(--white);
  transition:all .25s ease;
}
.menu-toggle span:nth-child(1){ top:15px; }
.menu-toggle span:nth-child(2){ top:23px; }
.menu-toggle span:nth-child(3){ top:31px; }
.menu-toggle.is-open span:nth-child(1){ transform:translateY(8px) rotate(45deg); }
.menu-toggle.is-open span:nth-child(2){ opacity:0; }
.menu-toggle.is-open span:nth-child(3){ transform:translateY(-8px) rotate(-45deg); }

.mobile-panel{
  position:fixed; inset:0; background:var(--onyx); z-index:1050;
  padding:calc(var(--nav-h) + 20px) var(--pad) 40px;
  transform:translateX(100%); transition:transform .35s ease;
  overflow-y:auto;
}
.mobile-panel.is-open{ transform:translateX(0); }
.mobile-panel a{ display:block; padding:16px 0; font-family:var(--f-display); font-size:26px; color:var(--white); border-bottom:1px solid var(--line); }
.mobile-panel .sub-link{ padding-left:16px; font-size:17px; font-family:var(--f-body); color:var(--concrete-2); border-bottom:none; }
.mobile-panel .mobile-cta{ margin-top:28px; }

@media (max-width:1080px){
  .primary-nav, .nav-cta-wrap .nav-cta{ display:none; }
  .menu-toggle{ display:block; }
}

/* ============ Hero ============ */
.hero{
  position:relative;
  min-height:92vh;
  display:flex; align-items:flex-end;
  color:var(--white);
  background-size:cover; background-position:center;
  overflow:hidden;
}
.hero::before{
  content:'';
  position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(10,10,10,.55) 0%, rgba(10,10,10,.35) 35%, rgba(10,10,10,.92) 100%);
}
.hero-inner{ position:relative; z-index:2; width:100%; padding-bottom:clamp(48px,7vw,88px); }
.hero-slats{
  position:absolute; z-index:2; inset:0;
  display:flex; pointer-events:none;
}
.hero-slats span{
  flex:1; background:var(--onyx);
  transform-origin:top;
  animation:slat-reveal 1.1s cubic-bezier(.7,0,.2,1) forwards;
}
@keyframes slat-reveal{ to{ transform:scaleY(0); } }
.hero h1{
  font-size:clamp(2.4rem, 5.4vw, 4.6rem);
  max-width:16ch;
  color:var(--white);
}
.hero .lede{
  margin-top:22px; max-width:44ch; font-size:clamp(1rem,1.4vw,1.2rem); color:var(--concrete-2); font-weight:400;
}
.hero-cta-row{ margin-top:34px; display:flex; gap:16px; flex-wrap:wrap; }
.hero-tag{ margin-top:26px; font-family:var(--f-mono); font-size:12.5px; letter-spacing:.14em; text-transform:uppercase; color:var(--steel); }
.hero.hero-sm{ min-height:56vh; align-items:center; }
.hero.hero-sm .hero-inner{ padding-bottom:0; }
.hero.hero-sm h1{ font-size:clamp(2rem,4.2vw,3.4rem); max-width:20ch; }

/* ============ Sections ============ */
section{ position:relative; }
.section{ padding:clamp(64px,9vw,132px) 0; }
.section-dark{ background:var(--onyx); color:var(--white); }
.section-charcoal{ background:var(--charcoal-1); color:var(--white); }
.section-concrete{ background:var(--concrete); }

.section-head{ max-width:760px; margin-bottom:clamp(36px,5vw,64px); }
.section-head h2{ margin-top:16px; font-size:clamp(1.9rem,3.4vw,3rem); }
.section-head .desc{ margin-top:18px; font-size:1.05rem; color:var(--steel-dim); max-width:56ch; }
.section-dark .section-head .desc, .section-charcoal .section-head .desc{ color:var(--steel); }

.two-col{ display:grid; grid-template-columns:1fr 1fr; gap:clamp(32px,6vw,90px); align-items:center; }
@media (max-width:860px){ .two-col{ grid-template-columns:1fr; } }

/* ============ Cards / grids ============ */
.grid-3{ display:grid; grid-template-columns:repeat(3,1fr); gap:2px; background:var(--line); }
.grid-2{ display:grid; grid-template-columns:repeat(2,1fr); gap:2px; background:var(--line); }
@media (max-width:860px){ .grid-3, .grid-2{ grid-template-columns:1fr; } }

.service-card{
  background:var(--onyx); color:var(--white);
  padding:clamp(28px,3vw,44px);
  display:flex; flex-direction:column; gap:16px;
  min-height:380px;
  position:relative; overflow:hidden;
}
.service-card .num{ font-family:var(--f-mono); font-size:12px; color:var(--bronze); letter-spacing:.1em; }
.service-card h3{ font-size:1.5rem; margin-top:auto; }
.service-card p{ color:var(--steel); font-size:.95rem; }
.service-card .thumb{
  position:absolute; inset:0; background-size:cover; background-position:center;
  opacity:.28; transition:opacity .4s ease, transform .5s ease; z-index:0;
}
.service-card:hover .thumb{ opacity:.42; transform:scale(1.04); }
.service-card > *:not(.thumb){ position:relative; z-index:1; }
.service-card .card-link{ display:inline-flex; align-items:center; gap:8px; font-family:var(--f-mono); font-size:12.5px; text-transform:uppercase; letter-spacing:.06em; color:var(--bronze); }
.service-card .card-link svg{ width:13px; height:13px; transition:transform .2s ease; }
.service-card:hover .card-link svg{ transform:translateX(4px); }

/* Photo tile grid (materials / gallery) */
.photo-tile{
  position:relative; overflow:hidden; aspect-ratio:4/3; background:var(--charcoal-2);
}
.photo-tile img{ width:100%; height:100%; object-fit:cover; transition:transform .6s ease; }
.photo-tile:hover img{ transform:scale(1.06); }
.photo-tile .cap{
  position:absolute; left:0; right:0; bottom:0; padding:18px 20px;
  background:linear-gradient(0deg, rgba(10,10,10,.85), transparent);
  color:var(--white); font-family:var(--f-mono); font-size:12.5px; letter-spacing:.05em; text-transform:uppercase;
}

/* Feature list (why / process descriptors) */
.feature-list{ display:grid; grid-template-columns:repeat(2,1fr); gap:1px; background:var(--line); }
@media (max-width:700px){ .feature-list{ grid-template-columns:1fr; } }
.feature-item{ background:var(--onyx); padding:32px; }
.feature-item h3{ font-size:1.2rem; color:var(--white); }
.feature-item p{ margin-top:10px; color:var(--steel); font-size:.94rem; }
.section-concrete .feature-item, .section-concrete .feature-list{ background:var(--white); }
.section-concrete .feature-list{ background:var(--concrete-2); }
.section-concrete .feature-item h3{ color:var(--onyx); }
.section-concrete .feature-item p{ color:var(--steel-dim); }

/* Process timeline */
.process-list{ display:flex; flex-direction:column; }
.process-row{
  display:grid; grid-template-columns:90px 1fr 1.1fr; gap:28px; align-items:start;
  padding:34px 0; border-bottom:1px solid var(--line);
}
.process-row:first-child{ border-top:1px solid var(--line); }
@media (max-width:760px){ .process-row{ grid-template-columns:56px 1fr; } .process-row .p-img{ display:none; } }
.process-row .p-num{ font-family:var(--f-mono); font-size:15px; color:var(--bronze); padding-top:4px; }
.process-row h3{ font-size:1.35rem; }
.process-row p{ margin-top:10px; color:var(--steel-dim); max-width:52ch; }
.p-img{ aspect-ratio:4/3; overflow:hidden; }
.p-img img{ width:100%; height:100%; object-fit:cover; }

/* FAQ accordion */
.faq-item{ border-bottom:1px solid var(--line); }
.faq-q{
  width:100%; text-align:left; background:none; border:none; color:inherit;
  display:flex; justify-content:space-between; align-items:center; gap:20px;
  padding:26px 0; font-family:var(--f-display); font-size:1.15rem;
}
.faq-q .plus{ font-family:var(--f-mono); font-size:20px; color:var(--bronze); transition:transform .25s ease; flex-shrink:0; }
.faq-item.is-open .faq-q .plus{ transform:rotate(45deg); }
.faq-a{ max-height:0; overflow:hidden; transition:max-height .3s ease; }
.faq-item.is-open .faq-a{ }
.faq-a-inner{ padding-bottom:26px; color:var(--steel-dim); max-width:64ch; }
.section-dark .faq-a-inner, .section-charcoal .faq-a-inner{ color:var(--steel); }

/* Style category cards (designs page) */
.style-card{ position:relative; aspect-ratio:3/4; overflow:hidden; }
.style-card img{ width:100%; height:100%; object-fit:cover; transition:transform .6s ease; }
.style-card:hover img{ transform:scale(1.08); }
.style-card .label{
  position:absolute; inset:0; display:flex; align-items:flex-end; padding:22px;
  background:linear-gradient(0deg, rgba(10,10,10,.82) 10%, transparent 55%);
}
.style-card .label span{ font-family:var(--f-display); font-size:1.3rem; color:var(--white); }

/* Filter bar (projects) */
.filter-bar{ display:flex; gap:10px; flex-wrap:wrap; margin-bottom:40px; }
.filter-btn{
  font-family:var(--f-mono); font-size:12.5px; letter-spacing:.05em; text-transform:uppercase;
  padding:10px 18px; border:1px solid var(--line); color:var(--steel-dim); background:none; transition:all .2s ease;
}
.filter-btn.is-active, .filter-btn:hover{ border-color:var(--bronze); color:var(--onyx); background:rgba(160,127,78,.08); }

/* Materials chip */
.mat-swatch{ display:flex; align-items:center; gap:14px; padding:18px 0; border-bottom:1px solid var(--line); }
.mat-swatch .chip{ width:44px; height:44px; flex-shrink:0; border:1px solid var(--line); }
.mat-swatch strong{ font-family:var(--f-display); font-size:1.02rem; }
.mat-swatch span{ display:block; color:var(--steel); font-size:.88rem; margin-top:2px; }

/* CTA band */
.cta-band{
  background:var(--onyx); color:var(--white); padding:clamp(56px,8vw,100px) 0;
  text-align:center;
}
.cta-band h2{ font-size:clamp(1.8rem,3.6vw,2.8rem); max-width:20ch; margin:20px auto 0; }
.cta-band .btn-row{ margin-top:32px; display:flex; gap:16px; justify-content:center; flex-wrap:wrap; }

/* Stat-free trust strip */
.trust-strip{ border-top:1px solid var(--line); border-bottom:1px solid var(--line); padding:26px 0; }
.trust-strip ul{ display:flex; gap:40px; flex-wrap:wrap; justify-content:center; font-family:var(--f-mono); font-size:12.5px; letter-spacing:.08em; text-transform:uppercase; color:var(--steel-dim); }

/* ============ Forms ============ */
.form-grid{ display:grid; grid-template-columns:1fr 1fr; gap:20px; }
@media (max-width:700px){ .form-grid{ grid-template-columns:1fr; } }
.field{ display:flex; flex-direction:column; gap:8px; }
.field.full{ grid-column:1/-1; }
.field label{ font-family:var(--f-mono); font-size:12px; letter-spacing:.06em; text-transform:uppercase; color:var(--steel-dim); }
.field input, .field select, .field textarea{
  background:var(--white); border:1px solid var(--concrete-2); padding:14px 16px; font-family:var(--f-body); font-size:15px; color:var(--onyx);
  transition:border-color .2s ease;
}
.field input:focus, .field select:focus, .field textarea:focus{ border-color:var(--bronze); outline:none; }
.field textarea{ resize:vertical; min-height:110px; }
.section-dark .field input, .section-dark .field select, .section-dark .field textarea{ background:var(--charcoal-1); border-color:var(--line); color:var(--white); }

.upload-box{
  border:1px dashed var(--concrete-2); padding:28px; text-align:center; color:var(--steel-dim); font-size:.92rem;
}
.section-dark .upload-box{ border-color:var(--line); }

.choice-row{ display:flex; flex-wrap:wrap; gap:10px; }
.choice-pill{
  border:1px solid var(--concrete-2); padding:10px 18px; font-size:.92rem; color:var(--steel-dim); cursor:pointer; transition:all .2s ease;
}
.choice-pill input{ display:none; }
.choice-pill:has(input:checked){ background:var(--onyx); color:var(--white); border-color:var(--onyx); }
.section-dark .choice-pill{ border-color:var(--line); }
.section-dark .choice-pill:has(input:checked){ background:var(--bronze); color:var(--onyx); border-color:var(--bronze); }

.form-steps-nav{ display:flex; gap:8px; margin-bottom:36px; }
.form-steps-nav .step-dot{ flex:1; height:3px; background:var(--concrete-2); }
.form-steps-nav .step-dot.is-active{ background:var(--bronze); }
.section-dark .form-steps-nav .step-dot{ background:var(--line); }

/* ============ Footer ============ */
.site-footer{ background:var(--onyx); color:var(--white); padding-top:70px; }
.footer-top{ display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:40px; padding-bottom:56px; border-bottom:1px solid var(--line); }
@media (max-width:860px){ .footer-top{ grid-template-columns:1fr 1fr; } }
@media (max-width:520px){ .footer-top{ grid-template-columns:1fr; } }
.footer-top h4{ font-family:var(--f-mono); font-size:12px; letter-spacing:.1em; text-transform:uppercase; color:var(--steel-dim); margin-bottom:18px; }
.footer-top ul li{ margin-bottom:12px; }
.footer-top ul a{ color:var(--concrete-2); font-size:.94rem; transition:color .2s ease; }
.footer-top ul a:hover{ color:var(--bronze); }
.footer-desc{ color:var(--steel); margin-top:16px; max-width:36ch; font-size:.95rem; }
.footer-bottom{ display:flex; justify-content:space-between; align-items:center; padding:26px 0; flex-wrap:wrap; gap:12px; }
.footer-bottom p{ color:var(--steel-dim); font-size:.83rem; font-family:var(--f-mono); }

/* ============ Utility / reveal ============ */
.reveal{ opacity:0; transform:translateY(28px); transition:opacity .7s ease, transform .7s ease; }
.reveal.is-visible{ opacity:1; transform:translateY(0); }

.pt-nav{ height:var(--nav-h); }

.lightbox{
  position:fixed; inset:0; background:rgba(10,10,10,.94); z-index:2000;
  display:flex; align-items:center; justify-content:center; padding:5vw;
  opacity:0; visibility:hidden; transition:opacity .25s ease;
}
.lightbox.is-open{ opacity:1; visibility:visible; }
.lightbox img{ max-width:100%; max-height:90vh; object-fit:contain; box-shadow:0 30px 80px rgba(0,0,0,.5); }

.breadcrumb{ font-family:var(--f-mono); font-size:12px; letter-spacing:.05em; text-transform:uppercase; color:var(--steel); display:flex; gap:8px; align-items:center; }

.primary-nav > li.current > a
Specificity: (0,2,2)
 {
    color: #a07f4e !important;
}