/*
  Thezenithinfra - Global Construction Company
  Shared stylesheet
  Colors: Sky Blue #2A9DF4, Gold #C9A43C, Light BG #F8F9FA, Dark #0F2233
  Typography: Poppins (fallback: system sans-serif)
*/

/* CSS Reset (lightweight) */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: "Poppins", system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif; color: #0F2233; background-color: #F8F9FA; line-height: 1.6; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

:root {
  --brand-blue: #2A9DF4;
  --brand-gold: #C9A43C;
  --bg-light: #F8F9FA;
  --text-dark: #0F2233;
  --text-muted: #5b6b7a;
  --card-bg: #ffffff;
  --shadow: 0 10px 30px rgba(15, 34, 51, 0.08);
  --radius: 14px;
  --radius-sm: 10px;
  --transition: 220ms cubic-bezier(.2,.8,.2,1);
}

/* Layout */
.container { width: min(1200px, 92%); margin-inline: auto; }
.grid { display: grid; gap: 1.5rem; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

/* Header / Nav */
header.site-header { position: sticky; top: 0; z-index: 1000; background: rgba(255,255,255,0.85); backdrop-filter: saturate(140%) blur(10px); box-shadow: 0 1px 0 rgba(0,0,0,0.06); }
.nav { display: flex; align-items: center; justify-content: space-between; padding: 0.8rem 0; }
.brand { display: flex; align-items: center; gap: 0.6rem; }
.brand-logo { display: inline-block; }
.brand-logo img { width: 100%; height: 100%; object-fit: contain; display: block; }
.brand-name { font-weight: 700; color: var(--text-dark); }
.brand-sub { display: block; font-size: 0.72rem; color: var(--text-muted); margin-top: -4px; }

.nav ul { list-style: none; display: flex; gap: 1.2rem; margin: 0; padding: 0; }
.nav a { padding: 0.5rem 0.8rem; border-radius: 8px; color: var(--text-dark); transition: background var(--transition), color var(--transition), transform var(--transition); }
.nav a:hover { background: rgba(42,157,244,0.08); color: var(--brand-blue); transform: translateY(-1px); }
.nav a.cta { background: var(--brand-blue); color: #fff; box-shadow: var(--shadow); }
.nav a.cta:hover { filter: brightness(1.05); transform: translateY(-2px); }

/* Hero */
.hero { padding: clamp(64px, 8vw, 120px) 0; background: radial-gradient(1200px 400px at 10% -10%, rgba(42,157,244,0.08), transparent), radial-gradient(1200px 400px at 90% 110%, rgba(201,164,60,0.10), transparent); }
.hero-inner { display: grid; grid-template-columns: 1.2fr 1fr; gap: 2rem; align-items: center; }
.eyebrow { color: var(--brand-blue); font-weight: 600; letter-spacing: .12em; text-transform: uppercase; font-size: 0.9rem; }
.hero h1 { font-size: clamp(2rem, 4.2vw, 3.2rem); line-height: 1.15; margin: 0.5rem 0 0.75rem; }
.hero p.lead { color: var(--text-muted); font-size: clamp(1rem, 1.8vw, 1.15rem); margin: 0 0 1.2rem; }
.hero-cta { display: flex; gap: 0.8rem; flex-wrap: wrap; align-items: center; }
.btn { display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.8rem 1rem; border-radius: 10px; border: 1px solid transparent; font-weight: 600; cursor: pointer; transition: transform var(--transition), box-shadow var(--transition), filter var(--transition), background var(--transition), color var(--transition), border-color var(--transition); }
.btn-primary { background: var(--brand-blue); color: #fff; box-shadow: var(--shadow); }
.btn-primary:hover { transform: translateY(-2px); filter: brightness(1.05); }
.btn-outline { border-color: rgba(15,34,51,.12); background: #fff; color: var(--text-dark); }
.btn-outline:hover { border-color: var(--brand-blue); color: var(--brand-blue); }

.hero-card { background: var(--card-bg); border: 1px solid rgba(15,34,51,.08); border-radius: var(--radius); padding: 1.2rem; box-shadow: var(--shadow); display: grid; gap: 1rem; }
.hero-card h3 { margin: 0; font-size: 1rem; color: var(--text-muted); font-weight: 600; letter-spacing: .06em; text-transform: uppercase; }
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.8rem; }
.stat { background: #fff; border: 1px solid rgba(15,34,51,.08); border-radius: var(--radius-sm); padding: 0.9rem; text-align: center; }
.stat .num { display: block; font-weight: 800; color: var(--brand-gold); font-size: 1.4rem; }
.stat .label { color: var(--text-muted); font-size: 0.85rem; }

/* Section */
section.section { padding: clamp(48px, 7vw, 86px) 0; }
.section-header { text-align: center; margin-bottom: 1.6rem; }
.section-header h2 { margin: 0.2rem 0 0.5rem; font-size: clamp(1.4rem, 3.2vw, 2rem); }
.section-header p { color: var(--text-muted); margin: 0; }

/* Service cards */
.card { background: var(--card-bg); border: 1px solid rgba(15,34,51,.08); border-radius: var(--radius); padding: 1.2rem; transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition); }
.card:hover { transform: translateY(-6px); box-shadow: 0 18px 40px rgba(15, 34, 51, 0.10); border-color: rgba(42,157,244,.25); }
.card .icon { width: 42px; height: 42px; border-radius: 10px; display: grid; place-items: center; background: linear-gradient(135deg, rgba(42,157,244,0.14), rgba(42,157,244,0.08)); color: var(--brand-blue); font-weight: 700; margin-bottom: 0.6rem; }
.card h3 { margin: 0 0 0.3rem; font-size: 1.1rem; }
.card p { margin: 0; color: var(--text-muted); }

/* Projects gallery */
.projects-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.project { position: relative; border-radius: var(--radius); overflow: hidden; background: #ddd; aspect-ratio: 4/3; box-shadow: var(--shadow); }
.project img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--transition), filter var(--transition); }
/* Optional: show contained image only for contact hero image */
.contact-image { width: 100%; height: auto; display: block; }
.project .overlay { position: absolute; inset: 0; display: grid; place-items: end start; padding: 1rem; background: linear-gradient(180deg, rgba(0,0,0,0) 40%, rgba(0,0,0,0.55)); color: #fff; opacity: 0; transition: opacity var(--transition); }
.project:hover img { transform: scale(1.06); filter: contrast(1.05) saturate(1.05); }
.project:hover .overlay { opacity: 1; }
.project .title { font-weight: 700; letter-spacing: .3px; }

/* Contact */
.contact { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 1.2rem; }
form.contact-form { background: var(--card-bg); padding: 1.2rem; border-radius: var(--radius); border: 1px solid rgba(15,34,51,.08); box-shadow: var(--shadow); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0.8rem; }
.input { display: grid; gap: 0.35rem; }
.input label { font-weight: 600; font-size: 0.9rem; }
.input input, .input textarea { padding: 0.8rem; border: 1px solid rgba(15,34,51,.18); border-radius: 10px; background: #fff; font: inherit; }
.input input:focus, .input textarea:focus { outline: none; border-color: var(--brand-blue); box-shadow: 0 0 0 4px rgba(42,157,244,.15); }
.input input::placeholder, .input textarea::placeholder { color: #98a6b5; }
.input .hint { font-size: 0.8rem; color: var(--text-muted); }
.map-placeholder { height: 100%; min-height: 340px; background: linear-gradient(135deg, rgba(201,164,60,.18), rgba(42,157,244,.18)); border: 2px dashed rgba(15,34,51,.15); border-radius: var(--radius); display: grid; place-items: center; color: #2b3b4b; text-align: center; padding: 1rem; }

/* Footer */
footer.site-footer { background: #ffffff; border-top: 1px solid rgba(15,34,51,.08); padding: 1.2rem 0; margin-top: 2rem; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.socials { display: flex; gap: 0.6rem; }
.socials a { width: 34px; height: 34px; border-radius: 8px; display: grid; place-items: center; background: #fff; border: 1px solid rgba(15,34,51,.12); transition: transform var(--transition), color var(--transition), border-color var(--transition), background var(--transition); }
.socials a:hover { transform: translateY(-2px); color: var(--brand-blue); border-color: var(--brand-blue); background: rgba(42,157,244,0.06); }

/* Utilities */
.muted { color: var(--text-muted); }
.gold { color: var(--brand-gold); }
.blue { color: var(--brand-blue); }
.center { text-align: center; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

/* Responsive */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; }
  .contact { grid-template-columns: 1fr; }
}

@media (max-width: 820px) {
  .grid-3, .projects-grid { grid-template-columns: 1fr 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .nav ul { gap: 0.6rem; }
}

@media (max-width: 560px) {
  .projects-grid { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .brand-sub { display: none; }
}