/* GM Construction - main stylesheet
   Brand navy: #163E64 */
:root{
  --navy:#163E64;
  --navy-dark:#0f2d4a;
  --navy-tint:#f2f6fa;
  --line:#d9e2ec;
  --text:#1c2733;
  --muted:#52606d;
  --white:#fff;
  --radius:3px;
  --wrap:1160px;
  --head:"Archivo","Helvetica Neue",Arial,sans-serif;
  --body:"Source Sans 3","Segoe UI",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:#fff;color:var(--text);font-family:var(--body);font-size:1.0625rem;line-height:1.65}
img{max-width:100%;height:auto;display:block}
a{color:var(--navy)}
a:hover{color:var(--navy-dark)}
:focus-visible{outline:3px solid #6fa3d6;outline-offset:2px}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-999px;top:0;background:var(--navy);color:#fff;padding:10px 16px;z-index:100}
.skip:focus{left:8px;top:8px}

h1,h2,h3{font-family:var(--head);color:var(--navy);line-height:1.12;margin:0 0 .5em;letter-spacing:-.01em}
h1{font-size:clamp(2.3rem,5.2vw,3.9rem);font-weight:800}
h2{font-size:clamp(1.65rem,3vw,2.3rem);font-weight:700}
h3{font-size:1.2rem;font-weight:700}
p{margin:0 0 1em}
.lead{font-size:1.2rem;color:var(--muted);max-width:60ch}
.muted{color:var(--muted)}
ul.plain{list-style:none;margin:0;padding:0}

/* Buttons */
.btn{display:inline-block;background:var(--navy);color:#fff;border:2px solid var(--navy);padding:13px 26px;font-family:var(--head);font-weight:600;font-size:1rem;text-decoration:none;border-radius:var(--radius);cursor:pointer;transition:background .15s,color .15s}
.btn:hover{background:var(--navy-dark);border-color:var(--navy-dark);color:#fff}
.btn-ghost{background:transparent;color:var(--navy)}
.btn-ghost:hover{background:var(--navy);color:#fff}
.btn-small{padding:9px 18px;font-size:.95rem}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.text-link{font-family:var(--head);font-weight:600;text-decoration:none;border-bottom:2px solid var(--navy)}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:76px}
.brand img{height:56px;width:auto}
.nav{display:flex;align-items:center;gap:28px}
.nav ul{display:flex;gap:6px;list-style:none;margin:0;padding:0}
.nav ul a{display:block;padding:10px 14px;text-decoration:none;font-family:var(--head);font-weight:600;color:var(--text);border-bottom:3px solid transparent}
.nav ul a:hover{color:var(--navy)}
.nav ul a.is-active{color:var(--navy);border-bottom-color:var(--navy)}
.nav-toggle{display:none;background:none;border:0;padding:10px;cursor:pointer}
.nav-toggle span{display:block;width:26px;height:3px;background:var(--navy);margin:5px 0;transition:transform .2s,opacity .2s}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(8px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}

/* Hero */
.hero{padding:64px 0 72px}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero-copy .lead{margin-top:22px}
.hero-art{background:var(--navy);border-radius:var(--radius);padding:12px;box-shadow:14px 14px 0 var(--navy-tint)}
.hero-art svg{width:100%;height:auto;display:block}

/* Sections */
.section{padding:84px 0}
.section.tight{padding-top:40px}
.section-tint{background:var(--navy-tint)}
.section-head{max-width:62ch;margin-bottom:44px}
.section-head p{color:var(--muted);margin:0}
.section-head.row{max-width:none;display:flex;justify-content:space-between;align-items:flex-end;gap:20px;flex-wrap:wrap}
.section-head.row p{margin-top:0}
.page-title{padding:64px 0 36px;border-bottom:1px solid var(--line)}
.page-title h1{font-size:clamp(2.1rem,4.4vw,3.2rem)}
.page-title .lead{margin:14px 0 0}

/* Services */
.service-list{display:grid;grid-template-columns:repeat(3,1fr);gap:40px 44px}
.service{border-left:4px solid var(--navy);padding-left:20px}
.service p{color:var(--muted);margin:0}

/* Steps */
.split{display:grid;grid-template-columns:.8fr 1.2fr;gap:64px;align-items:start}
.steps{list-style:none;counter-reset:s;margin:0;padding:0}
.steps li{counter-increment:s;position:relative;padding:0 0 26px 62px}
.steps li::before{content:counter(s);position:absolute;left:0;top:0;width:40px;height:40px;border-radius:50%;background:var(--navy);color:#fff;font-family:var(--head);font-weight:700;display:grid;place-items:center}
.steps li::after{content:"";position:absolute;left:19px;top:44px;bottom:4px;width:2px;background:var(--line)}
.steps li:last-child{padding-bottom:0}
.steps li:last-child::after{display:none}

/* Projects */
.project-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.project{margin:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.project img{width:100%;aspect-ratio:4/3;object-fit:cover;background:var(--navy-tint);transition:transform .35s}
.project-link{display:block;overflow:hidden;cursor:zoom-in}
.project-link:hover img{transform:scale(1.03)}
.project figcaption{padding:16px 18px 18px;display:flex;flex-direction:column;gap:2px}
.project figcaption strong{font-family:var(--head);color:var(--navy);font-size:1.1rem}
.project figcaption span{color:var(--muted);font-size:.95rem}
.project figcaption p{margin:8px 0 0;font-size:.98rem}
.project[hidden]{display:none}
.project-grid.three .project img{aspect-ratio:4/3}
.filters{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px}
.filter{background:#fff;border:2px solid var(--line);color:var(--navy);font-family:var(--head);font-weight:600;padding:8px 18px;border-radius:var(--radius);cursor:pointer}
.filter:hover{border-color:var(--navy)}
.filter.is-active{background:var(--navy);border-color:var(--navy);color:#fff}

/* Stats */
.stats{background:var(--navy);color:#fff;padding:56px 0}
.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.stat-value{font-family:var(--head);font-weight:800;font-size:clamp(2.2rem,4vw,3.2rem);line-height:1;margin:0 0 8px}
.stat-label{margin:0;color:#cfdcea}
.stats-grid>div{border-left:2px solid rgba(255,255,255,.3);padding-left:20px}

/* CTA */
.cta{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta h2{margin-bottom:.3em}
.cta .muted{margin:0}
.cta .actions{margin-top:0}

/* About */
.split-wide{display:grid;grid-template-columns:1.5fr .8fr;gap:64px;align-items:start}
.prose p{max-width:68ch}
.prose.two-col{display:grid;grid-template-columns:1fr 1fr;gap:48px}
.prose h3{margin-top:1.4em}
.prose h3:first-child{margin-top:0}
.prose.two-col p{max-width:none}
.facts{border:1px solid var(--line);border-top:4px solid var(--navy);padding:24px;border-radius:var(--radius)}
.facts li{padding:12px 0;border-bottom:1px solid var(--line)}
.facts li:last-child{border-bottom:0;padding-bottom:0}
.value-list{display:grid;grid-template-columns:repeat(4,1fr);gap:32px}
.value-list>div{border-top:4px solid var(--navy);padding-top:16px}
.value-list p{color:var(--muted);margin:0}

/* Contact */
.contact-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:64px;align-items:start}
.contact-details dl{margin:0}
.contact-details dt{font-family:var(--head);font-weight:700;color:var(--navy);margin-top:22px}
.contact-details dd{margin:2px 0 0}
.contact-form-wrap{border:1px solid var(--line);border-top:4px solid var(--navy);padding:32px;border-radius:var(--radius)}
.field{margin-bottom:20px}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:20px}
label{display:block;font-weight:600;margin-bottom:6px}
input[type=text],input[type=email],input[type=tel],select,textarea{width:100%;font:inherit;color:var(--text);background:#fff;border:1.5px solid #b8c4d0;border-radius:var(--radius);padding:12px 14px}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--navy);box-shadow:0 0 0 3px rgba(22,62,100,.2)}
textarea{resize:vertical}
.hp{position:absolute;left:-9999px;height:0;overflow:hidden}
.notice{padding:18px 20px;border-radius:var(--radius);margin-bottom:24px;border-left:5px solid}
.notice p,.notice ul{margin:6px 0 0}
.notice ul{padding-left:20px}
.notice.success{background:#edf7f0;border-color:#2f855a}
.notice.error{background:#fdf0ee;border-color:#c0392b}

/* Footer */
.site-footer{background:var(--navy-dark);color:#cfdcea;padding-top:56px}
.site-footer a{color:#fff;text-decoration:none}
.site-footer a:hover{text-decoration:underline}
.site-footer h3{color:#fff;font-size:1.05rem}
.footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1.4fr;gap:40px;padding-bottom:40px}
.footer-logo{height:56px;width:auto;background:#fff;padding:4px;border-radius:var(--radius)}
.footer-note{margin-top:14px;max-width:34ch}
.site-footer li{margin-bottom:6px}
.footer-base{border-top:1px solid rgba(255,255,255,.18);padding-top:18px;padding-bottom:22px;font-size:.92rem}
.footer-base p{margin:0}

/* Lightbox */
.lightbox{position:fixed;inset:0;background:rgba(10,24,38,.94);z-index:200;display:flex;align-items:center;justify-content:center;padding:24px}
.lightbox[hidden]{display:none}
.lightbox figure{margin:0;max-width:min(1000px,86vw)}
.lightbox img{max-height:78vh;width:auto;margin:0 auto;border-radius:var(--radius);background:#fff}
.lightbox figcaption{color:#fff;text-align:center;margin-top:14px}
.lightbox button{position:absolute;background:rgba(255,255,255,.12);color:#fff;border:0;width:48px;height:48px;border-radius:50%;font-size:2rem;line-height:1;cursor:pointer}
.lightbox button:hover{background:rgba(255,255,255,.25)}
.lb-close{top:18px;right:18px}
.lb-prev{left:18px;top:50%;transform:translateY(-50%)}
.lb-next{right:18px;top:50%;transform:translateY(-50%)}

/* Responsive */
@media (max-width:980px){
  .hero-grid,.split,.split-wide,.contact-grid{grid-template-columns:1fr;gap:40px}
  .hero-art{max-width:520px}
  .service-list,.project-grid{grid-template-columns:repeat(2,1fr)}
  .value-list{grid-template-columns:repeat(2,1fr)}
  .prose.two-col{grid-template-columns:1fr;gap:0}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  .nav-toggle{display:block}
  .nav{position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;gap:0;padding:8px 24px 20px;display:none}
  .nav.is-open{display:flex}
  .nav ul{flex-direction:column;gap:0}
  .nav ul a{padding:14px 0;border-bottom:1px solid var(--line)}
  .nav ul a.is-active{border-bottom-color:var(--navy)}
  .nav-cta{text-align:center;margin-top:16px}
  .hero{padding:40px 0 56px}
  .section{padding:60px 0}
  .stats-grid{grid-template-columns:1fr}
  .field-row{grid-template-columns:1fr}
  .contact-form-wrap{padding:22px}
  .footer-grid{grid-template-columns:1fr}
}
@media (max-width:560px){
  .service-list,.project-grid,.value-list{grid-template-columns:1fr}
  .btn{width:100%;text-align:center}
  .lb-prev{left:6px}.lb-next{right:6px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition:none!important}
}