/* US Construction Groups — site styles
   Palette: navy, white, construction gold */
:root {
  --navy-900: #0b1f3a;
  --navy-800: #0f2747;
  --navy-700: #13315c;
  --navy-600: #1c4278;
  --gold-500: #d4a017;
  --gold-400: #f0b429;
  --gold-100: #fbe6c0;
  --white: #ffffff;
  --gray-50: #f6f8fb;
  --gray-100: #eef2f7;
  --gray-300: #cdd6e2;
  --gray-500: #6b7a90;
  --gray-700: #33455c;
  --ink: #16263c;
  --shadow: 0 10px 30px rgba(11, 31, 58, 0.12);
  --radius: 14px;
  --maxw: 1150px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--navy-600); text-decoration: none; }
h1, h2, h3 { line-height: 1.2; color: var(--navy-800); margin: 0 0 .5em; }
h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.3rem); }
p { margin: 0 0 1rem; }
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.section { padding: 72px 0; }
.section--gray { background: var(--gray-50); }
.center { text-align: center; }
.lead { font-size: 1.15rem; color: var(--gray-700); max-width: 680px; }
.center .lead { margin-left: auto; margin-right: auto; }
.eyebrow {
  display: inline-block; letter-spacing: .14em; text-transform: uppercase;
  font-size: .78rem; font-weight: 700; color: var(--gold-500); margin-bottom: 10px;
}

/* Placeholder marker — clearly shows where real info is needed */
.ph {
  background: var(--gold-100);
  border: 1px dashed var(--gold-500);
  color: #7a5b00;
  padding: 1px 7px; border-radius: 6px; font-size: .92em; font-weight: 600;
  white-space: nowrap;
}
.note {
  background: var(--gray-100); border-left: 4px solid var(--gold-400);
  padding: 14px 18px; border-radius: 8px; color: var(--gray-700); font-size: .95rem;
}

/* Buttons */
.btn {
  display: inline-block; font-weight: 700; padding: 13px 26px; border-radius: 10px;
  cursor: pointer; border: 2px solid transparent; transition: .18s; font-size: 1rem;
}
.btn--gold { background: var(--gold-400); color: var(--navy-900); }
.btn--gold:hover { background: var(--gold-500); transform: translateY(-2px); }
.btn--ghost { background: transparent; color: var(--white); border-color: rgba(255,255,255,.55); }
.btn--ghost:hover { border-color: var(--gold-400); color: var(--gold-400); }
.btn--navy { background: var(--navy-700); color: #fff; }
.btn--navy:hover { background: var(--navy-800); }

/* Header / nav */
.site-header {
  position: sticky; top: 0; z-index: 50; background: var(--navy-800);
  box-shadow: 0 2px 12px rgba(0,0,0,.18);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 12px; color: #fff; font-weight: 800; }
.brand .logo { width: 40px; height: 40px; flex: none; }
.brand span small { display: block; font-weight: 500; color: var(--gold-400); font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; }
.nav-links { display: flex; align-items: center; gap: 4px; list-style: none; margin: 0; padding: 0; }
.nav-links a {
  color: #dfe7f2; padding: 10px 14px; border-radius: 8px; font-weight: 600; font-size: .98rem;
}
.nav-links a:hover, .nav-links a.active { color: #fff; background: rgba(255,255,255,.1); }
.nav-links a.active { box-shadow: inset 0 -3px 0 var(--gold-400); }
.nav-cta { margin-left: 8px; }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 26px; height: 3px; background: #fff; margin: 5px 0; border-radius: 2px; transition: .2s; }

/* Hero */
.hero {
  position: relative; color: #fff;
  background:
    linear-gradient(180deg, rgba(11,31,58,.82), rgba(15,39,71,.92)),
    radial-gradient(1200px 500px at 80% -10%, rgba(240,180,41,.25), transparent 60%),
    var(--navy-900);
  overflow: hidden;
}
.hero .container { position: relative; z-index: 2; padding-top: 86px; padding-bottom: 96px; }
.hero h1 { color: #fff; max-width: 15ch; }
.hero p { color: #d6deea; max-width: 56ch; font-size: 1.18rem; }
.hero .btns { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 10px; }
.hero-art { position: absolute; inset: 0; z-index: 1; opacity: .5; }
.hero-art svg { width: 100%; height: 100%; }

/* Stat strip */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--navy-700); }
.stats .stat { background: var(--navy-800); color: #fff; padding: 26px 18px; text-align: center; }
.stats .num { font-size: 1.9rem; font-weight: 800; color: var(--gold-400); }
.stats .lbl { font-size: .9rem; color: #c3cedd; }

/* Cards grid */
.grid { display: grid; gap: 24px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.card {
  background: #fff; border: 1px solid var(--gray-100); border-radius: var(--radius);
  padding: 28px; box-shadow: var(--shadow); transition: .2s;
}
.card:hover { transform: translateY(-4px); border-color: var(--gold-100); }
.card .ico { width: 54px; height: 54px; border-radius: 12px; background: var(--navy-800); display: grid; place-items: center; margin-bottom: 16px; }
.card .ico svg { width: 30px; height: 30px; }
.card h3 { font-size: 1.2rem; }

/* Project tiles */
.tile {
  border-radius: var(--radius); overflow: hidden; background: #fff;
  border: 1px solid var(--gray-100); box-shadow: var(--shadow);
}
.tile .thumb { aspect-ratio: 16/10; position: relative; }
.tile .thumb svg { width: 100%; height: 100%; }
.tile .tag { position: absolute; top: 12px; left: 12px; background: var(--gold-400); color: var(--navy-900); font-weight: 700; font-size: .78rem; padding: 4px 10px; border-radius: 20px; }
.tile .body { padding: 20px 22px; }
.tile h3 { font-size: 1.1rem; margin-bottom: 6px; }
.tile p { font-size: .95rem; color: var(--gray-500); margin: 0; }

/* Split / about */
.split { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; }
.media { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); background: var(--navy-800); }
.media svg { width: 100%; height: 100%; display: block; }
.checklist { list-style: none; padding: 0; margin: 18px 0 0; }
.checklist li { padding: 8px 0 8px 34px; position: relative; color: var(--gray-700); }
.checklist li::before { content: "✓"; position: absolute; left: 0; top: 6px; width: 22px; height: 22px; background: var(--gold-100); color: var(--gold-500); border-radius: 50%; display: grid; place-items: center; font-weight: 800; font-size: .8rem; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 40px; align-items: start; }
.info-card { background: var(--navy-800); color: #fff; border-radius: var(--radius); padding: 32px; }
.info-card h3 { color: #fff; }
.info-row { display: flex; gap: 14px; padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,.1); }
.info-row:last-child { border-bottom: 0; }
.info-row .ri { color: var(--gold-400); flex: none; }
.info-row b { display: block; color: #fff; }
.info-row span { color: #c3cedd; font-size: .96rem; }
form .field { margin-bottom: 18px; }
form label { display: block; font-weight: 600; margin-bottom: 6px; color: var(--gray-700); }
form input, form select, form textarea {
  width: 100%; padding: 12px 14px; border: 1.5px solid var(--gray-300); border-radius: 10px;
  font: inherit; color: var(--ink); background: #fff;
}
form input:focus, form select:focus, form textarea:focus { outline: none; border-color: var(--gold-400); box-shadow: 0 0 0 3px rgba(240,180,41,.2); }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-note { font-size: .85rem; color: var(--gray-500); }
.alert { padding: 14px 18px; border-radius: 10px; margin-bottom: 18px; font-weight: 600; }
.alert--ok { background: #e6f6ec; color: #1c7a3f; border: 1px solid #b7e3c6; }
.alert--err { background: #fdecec; color: #b3261e; border: 1px solid #f5c2c0; }

/* CTA band */
.cta-band { background: linear-gradient(90deg, var(--navy-800), var(--navy-600)); color: #fff; border-radius: 18px; padding: 44px; display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.cta-band h2 { color: #fff; margin: 0; }

/* Footer */
.site-footer { background: var(--navy-900); color: #b9c4d4; padding: 56px 0 28px; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 34px; }
.site-footer h4 { color: #fff; font-size: 1rem; margin: 0 0 14px; }
.site-footer a { color: #b9c4d4; display: block; padding: 4px 0; }
.site-footer a:hover { color: var(--gold-400); }
.foot-bottom { border-top: 1px solid rgba(255,255,255,.1); margin-top: 36px; padding-top: 20px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; font-size: .9rem; }
.page-head { background: var(--navy-800); color: #fff; padding: 64px 0 56px; }
.page-head h1 { color: #fff; }
.page-head .crumbs { color: var(--gold-400); font-size: .9rem; font-weight: 600; }
.page-head p { color: #d6deea; max-width: 60ch; }

/* Responsive */
@media (max-width: 900px) {
  .split, .contact-grid { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: absolute; top: 72px; left: 0; right: 0; background: var(--navy-800);
    flex-direction: column; align-items: stretch; gap: 0; padding: 10px 16px 18px;
    display: none; box-shadow: 0 12px 20px rgba(0,0,0,.25);
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 14px 10px; border-radius: 8px; }
  .nav-cta { margin: 8px 0 0; }
  .row2 { grid-template-columns: 1fr; }
  .cta-band { padding: 30px; }
}
@media (max-width: 520px) {
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .section { padding: 52px 0; }
}