/* ============================================================
   TOKENS
   ============================================================ */
:root{
  --ink:#085634;
  --panel:#FFFFFF;
  --panel-2:#F7F8F6;
  --line:#DCE3DD;
  --blueprint:#085634;
  --blueprint-2:#063F26;
  --amber:#F3BA25;
  --paper:#085634;
  --muted:#5C6B63;
  --font-display:"Big Shoulders Display", sans-serif;
  --font-body:"IBM Plex Sans", sans-serif;
  --font-mono:"IBM Plex Mono", monospace;
  --container:1240px;
  --gutter:clamp(20px, 5vw, 64px);
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:
    linear-gradient(rgba(229,226,220,.45) 1px, transparent 1px),
    linear-gradient(90deg, rgba(229,226,220,.45) 1px, transparent 1px),
    var(--panel-2);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
::selection{ background:var(--amber); color:var(--ink); }
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
h1,h2,h3{ font-family:var(--font-display); margin:0; font-weight:700; letter-spacing:.01em; }
p{ margin:0; }
ul{ margin:0; padding:0; list-style:none; }
.mono{ font-family:var(--font-mono); text-transform:uppercase; letter-spacing:.08em; font-size:.72rem; }
.muted{ color:var(--muted); }

@media (prefers-reduced-motion: reduce){
  *{ animation-duration:.01ms !important; animation-iteration-count:1 !important; transition-duration:.01ms !important; scroll-behavior:auto !important; }
}

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

/* corner rule decoration (blueprint sheet border) */
.rule{ position:fixed; left:0; right:0; height:1px; background:var(--line); z-index:5; pointer-events:none; opacity:.6; }
.rule--top{ top:14px; }
.rule--bottom{ bottom:14px; }

/* ============================================================
   HEADER
   ============================================================ */
.site-nav{
  position:sticky; top:0; z-index:50;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav__inner{ display:grid; grid-template-columns:1fr auto; gap:16px; align-items:center; min-height:70px; width:min(100% - 32px, var(--container)); margin-inline:auto; }
.brand{ display:inline-flex; align-items:center; color:var(--blueprint); font-weight:800; font-size:1.125rem; }
.brand img{ width:100px; height:42px; object-fit:contain; }
.nav-toggle{ display:none; flex-direction:column; align-items:center; justify-content:center; gap:5px; width:42px; height:42px; background:none; border:1px solid var(--line); border-radius:2px; cursor:pointer; padding:6px; }
.nav-toggle span{ width:22px; height:2px; background:var(--ink); display:block; }
.nav-toggle:hover,.nav-toggle:focus-visible{ border-color:var(--blueprint); }
.nav-menu{ display:none; grid-column:1 / -1; flex-direction:column; gap:12px; padding-bottom:16px; color:var(--muted); font-size:.875rem; font-weight:600; }
.nav-menu a:hover,.nav-menu a:focus-visible{ color:var(--blueprint); }
.nav-menu.is-open{ display:flex; }
.sticky-cta{ display:none; }

/* ============================================================
   SHARED
   ============================================================ */
.eyebrow{
  display:flex; align-items:center; gap:10px;
  font-family:var(--font-mono); text-transform:uppercase; letter-spacing:.16em; font-size:.78rem;
  color:var(--amber); margin-bottom:18px;
}
.eyebrow--light{ color:var(--amber); }
.eyebrow__dash{ width:28px; height:1px; background:var(--amber); display:inline-block; }

.btn{
  display:inline-flex; align-items:center; gap:10px;
  font-family:var(--font-mono); text-transform:uppercase; letter-spacing:.08em; font-size:.82rem;
  padding:15px 26px; border:1px solid var(--amber); border-radius:2px;
  background:transparent; color:var(--paper); cursor:pointer;
  transition:background .2s ease, color .2s ease, transform .2s ease;
}
.btn--primary{ background:var(--amber); color:var(--ink); border-color:var(--amber); }
.btn--primary:hover{ background:transparent; color:var(--amber); transform:translateY(-1px); }
.btn--block{ width:100%; justify-content:center; }
.btn__arrow{ transition:transform .2s ease; }
.btn:hover .btn__arrow{ transform:translateX(4px); }
.btn:focus-visible{ outline-offset:5px; }

.section-title{ font-size:clamp(2rem, 4.2vw, 3.2rem); line-height:1.05; text-transform:uppercase; }
.section-title--light{ color:var(--paper); }
.section-lede{ max-width:640px; color:var(--muted); font-size:1.05rem; margin-top:18px; }

/* ============================================================
   HERO
   ============================================================ */
.hero{
  position:relative;
  display:grid; grid-template-columns:1.15fr .85fr; align-items:center; gap:48px;
  min-height:clamp(580px, 78vh, 780px);
  padding:96px var(--gutter) 88px;
  max-width:var(--container); margin:0 auto;
  overflow:hidden;
}
.hero__grid{
  position:absolute; inset:0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse at 30% 30%, black 0%, transparent 65%);
  opacity:.35; z-index:-1;
}
.hero__headline{
  font-size:clamp(2.4rem, 5vw, 4.3rem);
  line-height:1.04;
  text-transform:uppercase;
  max-width:17ch;
  text-wrap:balance;
}
.hero__headline .hl{ color:var(--amber); }
.hero__sub{ margin-top:26px; max-width:46ch; color:var(--muted); font-size:1.08rem; }
.hero__tags{ display:flex; flex-wrap:wrap; gap:10px; margin-top:28px; }
.hero__tags span{
  font-family:var(--font-mono); font-size:.72rem; text-transform:uppercase; letter-spacing:.06em;
  padding:8px 12px; border:1px solid var(--line); border-radius:2px; color:var(--muted);
}
.hero__content .btn{ margin-top:38px; }

.hero__portrait{ position:relative; }
.portrait-frame{
  position:relative; border:1px solid var(--line); padding:14px;
  background:linear-gradient(145deg, var(--panel-2), var(--panel));
  box-shadow:18px 18px 0 rgba(240,180,77,.08);
}
.portrait-frame img{ width:100%; height:420px; object-fit:cover; filter:grayscale(.15) contrast(1.05); }
.frame-tag{
  position:absolute; bottom:-1px; left:-1px;
  background:var(--amber); color:var(--ink);
  font-family:var(--font-mono); font-size:.66rem; letter-spacing:.08em; text-transform:uppercase;
  padding:6px 10px;
}
.portrait-frame::before,.portrait-frame::after{
  content:""; position:absolute; width:18px; height:18px; border:2px solid var(--amber);
}
.portrait-frame::before{ top:-2px; left:-2px; border-right:none; border-bottom:none; }
.portrait-frame::after{ bottom:-2px; right:-2px; border-left:none; border-top:none; }

/* ============================================================
   HERO — BRAND
   ============================================================ */
.hero-brand{
  background:var(--ink);
  display:grid; grid-template-columns:1.1fr .9fr; align-items:center; gap:56px;
  padding:88px var(--gutter);
}
.hero-brand__eyebrow{
  font-family:var(--font-body); font-weight:600; text-transform:uppercase;
  letter-spacing:.09em; font-size:1rem; line-height:1.5;
  color:var(--amber); margin-bottom:22px;
}
.hero-brand__headline{
  font-family:var(--font-display); font-weight:700;
  font-size:clamp(2.6rem, 5.4vw, 4.4rem); line-height:1.05;
  color:var(--panel);
}
.hero-brand__headline .hl{ color:var(--amber); }
.hero-brand__sub{
  margin-top:26px; max-width:48ch; color:rgba(255,255,255,.72); font-size:1.08rem; line-height:1.6;
}
.hero-brand__cta{ display:flex; flex-wrap:wrap; align-items:center; gap:24px; margin-top:38px; }

.btn--brand-solid,.btn--brand-text{
  font-family:var(--font-body); font-weight:600; text-transform:none; letter-spacing:normal; font-size:.98rem;
}
.btn--brand-solid{
  background:rgba(255,255,255,.08); color:var(--panel); border:1px solid rgba(255,255,255,.16);
}
.btn--brand-solid:hover{ background:rgba(255,255,255,.16); color:var(--panel); transform:translateY(-1px); }
.btn--brand-text{
  background:transparent; color:var(--panel); border:none; padding:15px 4px;
}
.btn--brand-text:hover{ color:var(--amber); background:transparent; }

.hero-brand__media img{
  width:100%; height:auto; display:block; border-radius:10px;
  box-shadow:0 24px 48px rgba(0,0,0,.28);
}

@media (max-width:900px){
  .hero-brand{ grid-template-columns:1fr; padding-top:64px; }
  .hero-brand__media{ order:-1; }
}

/* ============================================================
   FIELD STRIP (scrolling gallery)
   ============================================================ */
.field-strip{ padding:40px 0 56px; border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.field-strip__label{
  display:flex; justify-content:space-between; padding:0 var(--gutter) 20px; color:var(--muted);
}
.field-slideshow{ position:relative; max-width:920px; margin:0 auto; padding:0 var(--gutter); }
.field-slide{ display:none; margin:0; }
.field-slide.is-active{ display:block; animation:slide-in .35s ease both; }
.field-slide img{ width:100%; height:min(52vw, 500px); min-height:240px; object-fit:cover; border:1px solid var(--line); }
.field-slide figcaption{ margin-top:12px; color:var(--muted); }
.field-slideshow__controls{ display:flex; align-items:center; justify-content:space-between; gap:20px; max-width:920px; margin:24px auto 0; padding:0 var(--gutter); }
.slideshow-button{ border:1px solid var(--line); background:var(--panel); color:var(--ink); padding:10px 14px; font-family:var(--font-mono); font-size:.68rem; text-transform:uppercase; letter-spacing:.08em; cursor:pointer; }
.slideshow-button:hover{ border-color:var(--amber); color:var(--amber); }
.field-slideshow__dots{ display:flex; gap:8px; justify-content:center; }
.slideshow-dot{ width:8px; height:8px; padding:0; border:1px solid var(--muted); border-radius:50%; background:transparent; cursor:pointer; }
.slideshow-dot.is-active{ background:var(--amber); border-color:var(--amber); }
@keyframes slide-in{ from{ opacity:0; transform:translateX(12px); } to{ opacity:1; transform:translateX(0); } }

/* ============================================================
   PROJECTS
   ============================================================ */
.projects{ padding:110px var(--gutter); max-width:var(--container); margin:0 auto; }
.projects__intro{ margin-bottom:72px; }

.project-list{ display:flex; flex-direction:column; gap:2px; }
.project-card{
  display:grid; grid-template-columns:1fr 1fr; gap:56px; align-items:center;
  padding:64px 0; border-top:1px solid var(--line);
}
.project-list .project-card:last-child{ border-bottom:1px solid var(--line); }
.project-card--reverse .project-card__media{ order:2; }
.project-card--reverse .project-card__body{ order:1; }

.project-card__media{ position:relative; overflow:hidden; border:1px solid var(--line); aspect-ratio:4/3; }
.project-card__media::after{ content:""; position:absolute; inset:12px; border:1px solid rgba(240,180,77,.35); pointer-events:none; opacity:0; transition:opacity .3s ease; }
.project-card__media img{ width:100%; height:100%; object-fit:cover; transition:transform .5s ease; }
.project-card:hover .project-card__media img{ transform:scale(1.045); }
.project-card:hover .project-card__media::after{ opacity:1; }

.sheet-no{ color:var(--amber); display:inline-block; margin-bottom:16px; }
.project-meta{ color:var(--muted); margin-bottom:14px; }
.project-card__body h3{ font-size:clamp(1.5rem, 2.4vw, 2.1rem); text-transform:uppercase; margin-bottom:16px; line-height:1.1; }
.project-card__body p{ color:var(--muted); max-width:52ch; }
.project-card__body h3 a:hover{ color:var(--amber); }
.project-card__link{
  display:inline-flex; align-items:center; gap:8px; margin-top:22px;
  color:var(--amber); font-size:.78rem;
}
.project-card__link .btn__arrow{ transition:transform .2s ease; }
.project-card__link:hover .btn__arrow{ transform:translateX(4px); }
a.project-card__media{ display:block; }

/* ============================================================
   PROJECT DETAIL
   ============================================================ */
.breadcrumb{
  display:flex; align-items:center; gap:8px;
  padding:28px var(--gutter) 0; max-width:var(--container); margin:0 auto;
  font-family:var(--font-mono); font-size:.72rem; text-transform:uppercase; letter-spacing:.08em; color:var(--muted);
}
.breadcrumb a{ color:var(--amber); }
.breadcrumb a:hover{ text-decoration:underline; }

.project-hero{ padding:40px var(--gutter) 0; max-width:var(--container); margin:0 auto; }
.project-hero__type{ margin-bottom:16px; }
.project-hero h1{
  font-size:clamp(2.1rem, 4.6vw, 3.6rem); text-transform:uppercase; line-height:1.05; max-width:20ch; text-wrap:balance;
}
.project-hero__media{
  margin-top:40px; border:1px solid var(--line); aspect-ratio:16/7; overflow:hidden; position:relative;
}
.project-hero__media img{ width:100%; height:100%; object-fit:cover; }
.project-hero__media::before,.project-hero__media::after{
  content:""; position:absolute; width:20px; height:20px; border:2px solid var(--amber); z-index:2;
}
.project-hero__media::before{ top:10px; left:10px; border-right:none; border-bottom:none; }
.project-hero__media::after{ bottom:10px; right:10px; border-left:none; border-top:none; }

/* title block, styled after an engineering drawing stamp */
.title-block{
  display:grid; grid-template-columns:repeat(5, 1fr);
  border:1px solid var(--line); border-top:none;
  max-width:var(--container); margin:0 auto;
}
.title-block__cell{ padding:20px var(--gutter); border-left:1px solid var(--line); }
.title-block__cell:first-child{ border-left:none; }
.title-block__label{ display:block; color:var(--amber); margin-bottom:8px; }
.title-block__value{ font-size:.95rem; }

.project-body{
  padding:96px var(--gutter); max-width:var(--container); margin:0 auto;
  display:grid; grid-template-columns:1fr 1fr; gap:72px;
}
.project-body h2{
  font-size:1.5rem; text-transform:uppercase; margin-bottom:24px; color:var(--paper);
}
.scope-list, .involvement-list{ display:flex; flex-direction:column; gap:14px; }
.scope-list li, .involvement-list li{
  display:flex; gap:14px; color:var(--muted); font-size:.98rem; line-height:1.55;
  padding-bottom:14px; border-bottom:1px solid var(--line);
}
.scope-list li:last-child, .involvement-list li:last-child{ border-bottom:none; padding-bottom:0; }
.list-index{ font-family:var(--font-mono); color:var(--amber); font-size:.82rem; flex:0 0 auto; padding-top:2px; }

.contractor-link{ margin-top:36px; }

.gallery{ padding:0 var(--gutter) 96px; max-width:var(--container); margin:0 auto; }
.gallery__label{ margin-bottom:20px; color:var(--muted); }
.gallery__grid{ display:grid; grid-template-columns:repeat(2, 1fr); gap:16px; }
.gallery__grid img{ width:100%; aspect-ratio:4/3; object-fit:cover; border:1px solid var(--line); }

.other-projects{ padding:0 var(--gutter) 96px; max-width:var(--container); margin:0 auto; border-top:1px solid var(--line); padding-top:56px; }
.other-projects__label{ margin-bottom:28px; }
.other-projects__grid{ display:grid; grid-template-columns:repeat(3, 1fr); gap:2px; background:var(--line); }
.other-projects__grid a{
  background:var(--ink); display:flex; flex-direction:column; gap:10px; overflow:hidden;
  transition:background .2s ease;
}
.other-projects__grid img{ width:100%; aspect-ratio:16/9; object-fit:cover; border-bottom:1px solid var(--line); filter:saturate(.8) contrast(1.05); transition:transform .45s ease, filter .3s ease; }
.other-projects__grid a > :not(img){ margin-left:26px; margin-right:26px; }
.other-projects__grid a > .mono{ margin-top:16px; }
.other-projects__grid a > .title{ margin-bottom:26px; }
.other-projects__grid a:hover{ background:var(--panel); }
.other-projects__grid a:hover img{ transform:scale(1.04); filter:saturate(1) contrast(1.05); }
.other-projects__grid a:hover .title{ color:var(--amber); }
.other-projects__grid .mono{ color:var(--amber); }
.other-projects__grid span.title{ font-family:var(--font-display); font-size:1.1rem; text-transform:uppercase; color:var(--panel); }

@media (max-width:900px){
  .title-block{ grid-template-columns:repeat(2, 1fr); }
  .title-block__cell:nth-child(odd){ border-left:none; }
  .title-block__cell:nth-child(-n+2){ border-top:none; }
  .title-block__cell{ border-top:1px solid var(--line); }
  .project-body{ grid-template-columns:1fr; gap:48px; }
  .gallery__grid{ grid-template-columns:repeat(2, 1fr); }
  .other-projects__grid{ grid-template-columns:1fr; }
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact{
  display:grid; grid-template-columns:1fr 1fr;
  background:linear-gradient(160deg, var(--panel) 0%, var(--panel) 60%);
}
.contact__panel{ padding:110px var(--gutter); }
.contact__subhead{ font-size:1.4rem; text-transform:uppercase; margin-top:32px; color:var(--amber); }
.contact__copy{ margin-top:16px; max-width:44ch; color:var(--muted); }
.contact__list{ margin-top:32px; display:flex; flex-direction:column; gap:10px; }
.contact__list li{ color:var(--muted);  padding-left:18px; position:relative; }
.contact__list li::before{ content:"—"; position:absolute; left:0; color:var(--amber); }

.contact__form-wrap{ padding:110px var(--gutter); background:var(--ink); position:relative; }
.contact-form{ display:flex; flex-direction:column; gap:22px; max-width:460px; }
.field{ display:flex; flex-direction:column; gap:8px; }
.field label{ font-family:var(--font-mono); font-size:.72rem; text-transform:uppercase; letter-spacing:.08em; color:var(--muted); }
.field input, .field textarea{
  background:var(--panel); border:1px solid var(--line); color:var(--paper);
  padding:13px 14px; font-family:var(--font-body); font-size:.96rem; border-radius:2px;
  resize:vertical;
}
.field input:focus, .field textarea:focus{ border-color:var(--amber); }
.field input::placeholder, .field textarea::placeholder{ color:var(--muted); opacity:.7; }

.form-success, .form-error{ max-width:460px; padding:26px; border:1px solid var(--line); margin-top:10px; }
.success-tag{ color:var(--amber); margin-bottom:10px; }
.error-tag{ color:#E06A5C; margin-bottom:10px; }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer{ background:var(--panel); border-top:1px solid var(--line); }
.footer__top{
  display:grid; grid-template-columns:1.2fr 1.4fr 1fr; gap:48px;
  padding:72px var(--gutter) 48px; max-width:var(--container); margin:0 auto;
}
.footer__brand p{ margin-top:6px; }
.footer__logo{ width:100px; height:42px; object-fit:contain; margin-bottom:14px; }
.footer__links, .footer__social{ display:flex; flex-direction:column; gap:12px; }
.footer__links p, .footer__social p{ margin-bottom:6px; }
.footer__links a, .footer__social a{ color:var(--ink); font-size:.95rem; }
.footer__links a:hover, .footer__social a:hover{ color:var(--amber); }

.footer__bottom{
  display:flex; justify-content:space-between; padding:24px var(--gutter);
  border-top:1px solid var(--line); max-width:var(--container); margin:0 auto;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width:900px){
  .nav-toggle{ display:flex; }
  .hero{ grid-template-columns:1fr; padding-top:64px; }
  .hero__portrait{ order:-1; max-width:320px; }
  .portrait-frame img{ height:320px; }
  .project-card{ grid-template-columns:1fr; gap:28px; }
  .project-card--reverse .project-card__media{ order:1; }
  .project-card--reverse .project-card__body{ order:2; }
  .contact{ grid-template-columns:1fr; }
  .footer__top{ grid-template-columns:1fr; }
  .footer__bottom{ flex-direction:column; gap:8px; }
}

@media (min-width:901px){
  .nav__inner{ grid-template-columns:auto 1fr auto; }
  .nav-toggle{ display:none; }
  .nav-menu{ display:flex; grid-column:auto; flex-direction:row; justify-content:center; padding-bottom:0; gap:36px; }
  .nav-menu a{ font-family:var(--font-mono); font-size:.78rem; letter-spacing:.08em; text-transform:uppercase; color:var(--ink); position:relative; padding-bottom:4px; }
  .nav-menu a::after{ content:""; position:absolute; left:0; bottom:0; width:0; height:1px; background:var(--amber); transition:width .25s ease; }
  .nav-menu a:hover::after,.nav-menu a:focus-visible::after{ width:100%; }
  .sticky-cta{ display:inline-flex; }
}

@media (max-width:560px){
  .hero{ padding-top:48px; padding-bottom:64px; }
  .hero__headline{ font-size:clamp(2.25rem, 12vw, 3.4rem); }
  .hero__tags span{ font-size:.66rem; }
  .projects, .project-body{ padding-top:76px; padding-bottom:76px; }
  .project-card{ padding:40px 0; }
  .project-card__body h3{ font-size:1.7rem; }
  .title-block{ grid-template-columns:1fr; }
  .title-block__cell, .title-block__cell:nth-child(odd){ border-left:none; }
  .title-block__cell:first-child{ border-top:none; }
  .gallery__grid{ grid-template-columns:1fr; }
  .contact__panel, .contact__form-wrap{ padding-top:76px; padding-bottom:76px; }
  .footer__top{ padding-top:56px; }
}