:root {
  --bg: #0b1220;
  --surface: #0f172a;
  --muted: #94a3b8;
  --text: #e2e8f0;
  --primary: #0f2740; /* navy */
  --primary-700: #0b1b31;
  --accent: #b98a2e; /* gold */
  --card: #111827;
  --border: #1f2937;
  --container: 1120px;
  --radius: 12px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", "Liberation Sans", sans-serif;
  background: linear-gradient(180deg, var(--bg) 0%, #0b1325 100%);
  color: var(--text);
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: saturate(180%) blur(12px);
  background: #fff;
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 200px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #000;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.5px;
}
.brand-logo { height: 180px; display: block; image-rendering: -webkit-optimize-contrast; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: white;
}
.brand-text { font-size: 18px; }

.nav .menu {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav a {
  color: #000;
  text-decoration: none;
  padding: 10px 12px;
  border-radius: 8px;
}
.nav a:hover { background: rgba(255,255,255,0.06); color:#000 !important; }

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 10px;
  align-items: center;
  justify-content: center;
  gap: 3px;
}
.nav-toggle .bar {
  width: 18px;
  height: 2px;
  background: var(--text);
  display: block;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 1px, 1px);
  white-space: nowrap;
  border: 0;
}

/* Hero */
.hero {
  padding: 80px 0 64px;
  background: radial-gradient(1200px 400px at 10% -10%, rgba(79,70,229,0.35), transparent 60%),
              radial-gradient(1000px 400px at 90% -20%, rgba(34,197,94,0.25), transparent 60%);
}
.hero h1 {
  font-size: 40px;
  line-height: 1.15;
  margin: 0 0 12px;
}
.hero .subhead {
  color: var(--muted);
  margin: 0 0 16px;
  font-size: 18px;
}
.hero-description {
  color: var(--text);
  margin: 0 0 20px;
  font-size: 16px;
  line-height: 1.6;
}
.slogan {
  margin: 0 0 24px;
  padding: 16px 20px;
  background: rgba(185,138,46,0.1);
  border: 1px solid rgba(185,138,46,0.2);
  border-radius: 12px;
  text-align: center;
}
.slogan p {
  margin: 0;
  font-style: italic;
  color: var(--accent);
  font-size: 18px;
  font-weight: 500;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* Mission Vision */
.mission-vision {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 32px;
}
.mission, .vision {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.mission h3, .vision h3 {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 18px;
}
.mission p, .vision p {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 16px;
  border-radius: 10px;
  border: 1px solid var(--border);
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-700));
  border: none;
  color: #fff !important;
}
.btn-primary:hover { filter: brightness(1.05); }
.btn-outline:hover { background: rgba(255,255,255,0.06); }

/* Sections */
.section { padding: 64px 0; }
.section.alt { background: linear-gradient(180deg, rgba(255,255,255,0.02), transparent); }
.section-head { max-width: 760px; }
.section-head h2 { margin: 0 0 10px; font-size: 28px; }
.section-head p { margin: 0 0 24px; color: var(--muted); }

.features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.feature {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
}
.feature .icon { font-size: 22px; }
.feature h3 { margin: 10px 0 6px; font-size: 18px; }
.feature p { margin: 0; color: var(--muted); }

.services {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
}
.card h3 { margin: 0 0 8px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); line-height: 1.5; }

/* Service images */
.service-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #0b1428;
  margin-bottom: 10px;
}

/* Projects Section */
.projects {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}

.project-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.project-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0,0,0,0.3);
}

.project-image {
  width: 100%;
  height: 200px;
  overflow: hidden;
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.project-card:hover .project-image img {
  transform: scale(1.05);
}

.project-content {
  padding: 20px;
}

.project-content h3 {
  margin: 0 0 8px;
  font-size: 20px;
  color: var(--text);
}

.project-location {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 500;
}

.project-description {
  margin: 0 0 16px;
  color: var(--muted);
  line-height: 1.6;
  font-size: 14px;
}

.project-features {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.feature-tag {
  background: rgba(185,138,46,0.1);
  color: var(--accent);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
  border: 1px solid rgba(185,138,46,0.2);
}

.projects-cta {
  text-align: center;
  background: linear-gradient(135deg, rgba(79,70,229,0.15), rgba(34,197,94,0.10));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}

.projects-cta h3 {
  margin: 0 0 8px;
  font-size: 24px;
}

.projects-cta p {
  margin: 0 0 20px;
  color: var(--muted);
  font-size: 16px;
}

.cta {
  margin-top: 28px;
  background: linear-gradient(135deg, rgba(79,70,229,0.15), rgba(34,197,94,0.10));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
}
.cta h3 { margin: 0 0 6px; }
.cta p { margin: 0 0 12px; color: var(--muted); }

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.contact-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
}
.contact-list {
  margin: 0;
  padding: 0;
  list-style: none;
}
.contact-list li { margin: 8px 0; }
.contact-list a { color: #93c5fd; text-decoration: none; }
.contact-list a:hover { text-decoration: underline; }
.contact-list .secondary { display: block; padding-left: 76px; }

.social { margin-top: 14px; display: flex; gap: 10px; }
.social-link {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #b98a2e;
  background: rgba(185,138,46,0.08);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.social-link.whatsapp { color: #25D366; background: rgba(37,211,102,0.10); }
.social-link:hover { filter: brightness(1.1); }
.social-link svg { width: 20px; height: 20px; display: block; }

.contact-form {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
}
.field { display: grid; gap: 6px; margin-bottom: 12px; }
.field label { color: var(--muted); font-size: 14px; }
.field input,
.field select,
.field textarea {
  background: #0b1428;
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  padding: 10px 12px;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: 2px solid rgba(79,70,229,0.35);
  outline-offset: 0;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
  color: var(--muted);
}
.footer-content {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
  text-align: center;
}
.footer-main .copyright {
  margin: 0;
  font-size: 16px;
  font-weight: 500;
}
.footer-links {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}
.footer-link {
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
}
.footer-link:hover {
  color: var(--accent);
  text-decoration: underline;
}
.separator {
  color: var(--border);
  font-size: 14px;
}

/* Responsive */
@media (max-width: 1200px) {
  .services { grid-template-columns: repeat(2, 1fr); }
  .projects { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 960px) {
  .features { grid-template-columns: repeat(2, 1fr); }
  .mission-vision { grid-template-columns: 1fr; gap: 16px; }
  .projects { grid-template-columns: 1fr; gap: 20px; }
}

@media (max-width: 720px) {
  .hero { padding: 64px 0 48px; }
  .hero h1 { font-size: 30px; }
  .hero .subhead { font-size: 16px; }
  .hero-description { font-size: 15px; }
  .slogan { padding: 12px 16px; }
  .slogan p { font-size: 16px; }
  .header-inner { height: 72px; }
  .brand-logo { height: 56px; }
  .nav-toggle { display: inline-flex; }
  .nav .menu {
    position: absolute;
    top: 72px;
    right: 20px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 8px;
    display: none;
    flex-direction: column;
    min-width: 220px;
  }
  .nav .menu.open { display: flex; }
  .contact-grid { grid-template-columns: 1fr; }
  .features { grid-template-columns: 1fr; }
  .services { grid-template-columns: 1fr; }
  .projects { grid-template-columns: 1fr; gap: 16px; }
  .project-content { padding: 16px; }
  .projects-cta { padding: 24px 20px; }
  .footer-content { gap: 12px; }
  .footer-links { gap: 6px; }
  .footer-link { font-size: 13px; }
}