:root {
  --navy: #1c2660;
  --navy-dark: #131a4d;
  --green: #79c900;
  --light-blue: #d4ecf7;
  --olive: #2e5012;
  --white: #ffffff;
  --muted: #6b7280;
  --line: #e5e7eb;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html { scroll-behavior: smooth; }

body {
  font-family: Inter, Arial, sans-serif;
  background: var(--white);
  color: var(--navy);
  line-height: 1.5;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }

/* ── Header ─────────────────────────────────────────── */

.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: var(--navy);
  border-bottom: 5px solid var(--green);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px clamp(16px, 4vw, 52px);
  height: 70px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.22);
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-top {
  color: var(--white);
  font-size: 12px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.01em;
}

.brand-main {
  color: var(--white);
  font-size: 26px;
  font-weight: 900;
  line-height: 1;
}

.brand-mark {
  background: var(--white);
  color: var(--navy);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 900;
  flex-shrink: 0;
}

.wa-icon {
  background: #25d366;
  color: var(--white);
  border-radius: 50%;
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background 150ms ease, transform 150ms ease;
}

.wa-icon:hover {
  background: #1ebe5d;
  transform: scale(1.08);
}

.site-nav {
  display: flex;
  gap: 28px;
}

.nav-link {
  color: rgba(255, 255, 255, 0.82);
  font-size: 14px;
  font-weight: 700;
  transition: color 150ms ease;
}

.nav-link:hover { color: var(--white); }

.nav-link.active { color: var(--green); }

/* ── Hero ────────────────────────────────────────────── */

.hero {
  padding-top: 70px;
}

.hero img {
  width: 100%;
  height: 58vh;
  min-height: 320px;
  object-fit: cover;
  object-position: center;
  display: block;
}

/* ── Projects carousel ───────────────────────────────── */

.projects {
  background: var(--light-blue);
  display: flex;
  align-items: center;
  min-height: 460px;
  position: relative;
}

.carousel-arrow {
  background: none;
  border: none;
  color: var(--navy);
  font-size: 72px;
  font-weight: 300;
  line-height: 1;
  cursor: pointer;
  padding: 0 18px;
  flex-shrink: 0;
  opacity: 0.45;
  align-self: stretch;
  display: flex;
  align-items: center;
  transition: opacity 150ms ease;
  user-select: none;
}

.carousel-arrow:hover { opacity: 0.9; }

.project-slide {
  flex: 1;
  padding: 48px 16px 56px;
  text-align: center;
  min-width: 0;
}

.project-name {
  font-size: clamp(22px, 3.8vw, 40px);
  font-weight: 900;
  color: var(--olive);
  margin-bottom: 10px;
  line-height: 1.1;
}

.project-category {
  display: inline-block;
  background: rgba(255, 255, 255, 0.65);
  color: var(--navy);
  font-size: 12px;
  font-weight: 700;
  border-radius: 999px;
  padding: 5px 14px;
  margin-bottom: 6px;
}

.project-location {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 20px;
}

.project-img {
  width: 100%;
  max-width: 640px;
  height: 280px;
  object-fit: cover;
  border-radius: 8px;
  margin: 0 auto 20px;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.14);
}

.project-desc {
  font-size: 15px;
  color: #374151;
  max-width: 540px;
  margin: 0 auto 24px;
  line-height: 1.6;
}

.project-cta {
  background: var(--navy);
  color: var(--white);
  font-size: 14px;
  font-weight: 800;
  padding: 13px 28px;
  border-radius: 8px;
  display: inline-flex;
  transition: background 150ms ease, transform 150ms ease;
}

.project-cta:hover {
  background: var(--navy-dark);
  transform: translateY(-1px);
}

.carousel-dots {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 7px;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(28, 38, 96, 0.22);
  cursor: pointer;
  transition: background 200ms ease;
  border: none;
  padding: 0;
}

.dot.active { background: var(--navy); }

/* ── About ───────────────────────────────────────────── */

.about {
  padding: 72px clamp(18px, 5vw, 80px);
  background: var(--white);
  text-align: center;
  border-top: 1px solid var(--line);
}

.about-inner {
  max-width: 740px;
  margin: 0 auto;
}

.about h2 {
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 900;
  color: var(--navy);
  margin-bottom: 18px;
}

.about p {
  font-size: 17px;
  color: #374151;
  line-height: 1.75;
}

/* ── Contact ─────────────────────────────────────────── */

.contact {
  padding: 72px clamp(18px, 5vw, 80px);
  background: #f8fafc;
  border-top: 1px solid var(--line);
  text-align: center;
}

.contact-inner { max-width: 900px; margin: 0 auto; }

.contact h2 {
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 900;
  color: var(--navy);
  margin-bottom: 6px;
}

.contact-brand {
  font-size: 17px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 48px;
}

.contact-items {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 40px;
}

.contact-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  max-width: 220px;
}

.contact-icon {
  width: 36px;
  height: 36px;
  color: var(--navy);
  flex-shrink: 0;
}

.contact-label {
  font-size: 14px;
  font-weight: 800;
  color: var(--navy);
}

.contact-value {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.65;
}

/* ── Footer ──────────────────────────────────────────── */

.site-footer {
  background: var(--navy);
  border-top: 5px solid var(--green);
  padding: 40px clamp(18px, 5vw, 80px) 24px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-info {
  color: rgba(255, 255, 255, 0.65);
  font-size: 13px;
  line-height: 1.9;
  text-align: right;
}

.footer-copy {
  text-align: center;
  color: rgba(255, 255, 255, 0.3);
  font-size: 12px;
  margin: 24px auto 0;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  max-width: 1200px;
}

/* ── Floating CTA ────────────────────────────────────── */

.floating-cta {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 50;
  background: #4f86d8;
  color: var(--white);
  border-radius: 8px;
  padding: 12px 20px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 700;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.22);
  transition: background 150ms ease, transform 150ms ease;
}

.floating-cta:hover {
  background: #3d74c6;
  transform: translateY(-1px);
}

/* ── Responsive ──────────────────────────────────────── */

@media (max-width: 768px) {
  .site-nav { display: none; }

  .hero img {
    height: 46vw;
    min-height: 220px;
  }

  .carousel-arrow {
    font-size: 52px;
    padding: 0 10px;
  }

  .project-img { height: 200px; }

  .footer-inner { flex-direction: column; align-items: flex-start; }
  .footer-info { text-align: left; }
}