:root {
  --nv-primary-accent: #04724d;
  --nv-secondary-accent: #04583c;
  --nv-site-bg: #ffffff;
  --nv-light-bg: #f1f0ea;
  --nv-dark-bg: #0d1821;
  --nv-text-color: #2c2c2c;
  --nv-text-dark-bg: #ffffff;
  --container: 1170px;
  --body-font: Arial, Helvetica, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--body-font);
  font-size: 18px;
  line-height: 1.7;
  color: var(--nv-text-color);
  background: var(--nv-site-bg);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--nv-primary-accent);
  text-decoration: none;
}

a:hover {
  color: var(--nv-secondary-accent);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.skip-link:focus {
  position: fixed;
  top: 10px;
  left: 10px;
  width: auto;
  height: auto;
  padding: 10px 16px;
  background: var(--nv-primary-accent);
  color: #fff;
  z-index: 10000;
}

/* Header */
.site-header {
  background: var(--nv-site-bg);
  border-bottom: 1px solid var(--nv-light-bg);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 80px;
}

.site-logo img {
  max-width: 200px;
  height: auto;
}

.nav-desktop {
  display: none;
  align-items: center;
  gap: 0;
}

.nav-desktop ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
}

.nav-desktop li a {
  display: block;
  padding: 10px 20px;
  color: var(--nv-text-color);
  font-weight: 600;
  font-size: 0.8em;
  text-transform: uppercase;
  letter-spacing: 0;
  transition: color 0.2s;
}

.nav-desktop li a:hover,
.nav-desktop li a.active {
  color: var(--nv-secondary-accent);
}

.btn {
  display: inline-block;
  padding: 8px 12px;
  border-radius: 3px;
  font-size: 14px;
  font-weight: 600;
  text-transform: capitalize;
  cursor: pointer;
  border: none;
  transition: background 0.2s, color 0.2s;
  text-align: center;
}

.btn-primary {
  background: var(--nv-primary-accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--nv-secondary-accent);
  color: #fff;
}

.btn-secondary {
  background: transparent;
  color: var(--nv-primary-accent);
  border: 2px solid var(--nv-primary-accent);
}

.btn-secondary:hover {
  background: var(--nv-secondary-accent);
  color: #fff;
  border-color: var(--nv-secondary-accent);
}

.btn-white {
  background: #fff;
  color: var(--nv-primary-accent);
}

.btn-white:hover {
  background: var(--nv-light-bg);
  color: var(--nv-secondary-accent);
}

.btn-on-dark {
  background: transparent;
  color: #fff;
  border: 2px solid #fff;
}

.btn-on-dark:hover {
  background: #fff;
  color: var(--nv-primary-accent);
}

.btn-lg {
  padding: 12px 24px;
  font-size: 18px;
}

/* Mobile menu toggle */
.menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: 1px solid var(--nv-light-bg);
  border-radius: 3px;
  padding: 10px 15px;
  cursor: pointer;
}

.menu-toggle .bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--nv-text-color);
  transition: transform 0.3s, opacity 0.3s;
}

.menu-toggle.active .bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle.active .bar:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active .bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 360px;
  max-width: 85vw;
  height: 100vh;
  background: var(--nv-site-bg);
  z-index: 2000;
  transform: translateX(-100%);
  transition: transform 0.3s ease;
  padding: 60px 30px 30px;
  box-shadow: 4px 0 20px rgba(0, 0, 0, 0.15);
}

.mobile-nav.open {
  transform: translateX(0);
}

.mobile-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.mobile-nav li a {
  display: block;
  padding: 15px 0;
  color: var(--nv-text-color);
  font-weight: 600;
  font-size: 1em;
  border-bottom: 1px solid var(--nv-light-bg);
}

.mobile-nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1999;
}

.mobile-nav-overlay.open {
  display: block;
}

.mobile-close {
  position: absolute;
  top: 15px;
  right: 15px;
  background: none;
  border: none;
  font-size: 28px;
  cursor: pointer;
  color: var(--nv-text-color);
  line-height: 1;
}

/* Main content */
main {
  min-height: 60vh;
}

/* Hero section */
.hero {
  position: relative;
  min-height: 800px;
  display: flex;
  align-items: center;
  background-size: cover;
  background-position: 50% 87%;
  background-repeat: no-repeat;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: var(--container);
  margin: 0 auto;
  padding: 60px 20px;
  width: 100%;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}

.hero-text h2 {
  color: #fff;
  margin: 0 0 24px;
  font-weight: 600;
}

.hero-text h2 em {
  font-style: italic;
  font-size: 46px;
  line-height: 1.3;
}

.hero-text .subtitle {
  font-size: 46px;
  line-height: 1.3;
  margin-bottom: 24px;
}

.hero-text p {
  color: #fff;
  font-size: 19px;
  margin: 0 0 24px;
}

.hero-image {
  display: flex;
  justify-content: center;
}

.hero-image img {
  max-width: 400px;
  border-radius: 8px;
}

/* Page title banner */
.page-banner {
  background: var(--nv-site-bg);
  padding: 40px 20px;
  min-height: 120px;
  display: flex;
  align-items: center;
}

.page-banner h1 {
  max-width: var(--container);
  margin: 0 auto;
  width: 100%;
  padding: 0 20px;
  color: var(--nv-text-color);
  font-size: 46px;
  font-weight: 600;
}

/* Section styles */
.section {
  padding: 80px 20px;
}

.section-light {
  background: var(--nv-light-bg);
}

.section-dark {
  background: var(--nv-dark-bg);
  color: var(--nv-text-dark-bg);
}

.section-green {
  background: var(--nv-primary-accent);
  color: var(--nv-text-dark-bg);
}

.section-inner {
  max-width: var(--container);
  margin: 0 auto;
}

.section-title {
  text-align: center;
  font-size: 24px;
  font-weight: 600;
  margin: 0 0 50px;
  color: var(--nv-text-color);
}

/* Feature cards */
.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

.feature-card {
  text-align: center;
  padding: 0 20px;
}

.feature-card img {
  width: 219px;
  margin: 0 auto 16px;
}

.feature-card h3 {
  font-size: 24px;
  font-weight: 600;
  color: var(--nv-text-color);
  margin: 0 0 16px;
}

.feature-card p {
  margin: 0;
}

/* CTA section */
.cta-section {
  text-align: center;
  padding: 80px 20px;
}

.cta-section h2 {
  color: #fff;
  font-size: 46px;
  margin: 0 0 24px;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* Grow business section */
.grow-section {
  text-align: center;
  padding: 80px 20px;
}

.grow-section h2 {
  color: #fff;
  font-size: 46px;
  margin: 0 0 24px;
}

.grow-section p {
  color: #fff;
  max-width: 700px;
  margin: 0 auto 16px;
}

.grow-section .certs {
  margin-top: 40px;
}

.grow-section .certs img {
  margin: 0 auto;
  max-width: 1000px;
}

/* About page */
.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: start;
}

.about-image img {
  border-radius: 16px;
  max-width: 308px;
  margin: 0 auto;
}

.about-content h2 {
  font-size: 34px;
  margin: 0 0 20px;
}

.about-content p {
  margin: 0 0 16px;
}

/* Contact page */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

.contact-card {
  background: var(--nv-site-bg);
  border-radius: 24px;
  padding: 24px;
  text-align: center;
}

.contact-card img {
  margin: 0 auto 24px;
  width: 73px;
  height: 72px;
}

.contact-card h3 {
  font-size: 20px;
  margin: 0 0 8px;
}

.contact-card p {
  font-size: 15px;
  margin: 0;
}

.contact-cta {
  text-align: center;
  margin-top: 40px;
}

/* Footer */
.site-footer {
  background: var(--nv-dark-bg);
  color: var(--nv-text-dark-bg);
  padding: 20px;
}

.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  text-align: center;
}

.footer-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-nav a {
  color: var(--nv-text-dark-bg);
  font-weight: 500;
}

.footer-nav a:hover {
  color: var(--nv-primary-accent);
}

.footer-copy {
  font-size: 14px;
  opacity: 0.8;
}

.footer-copy a {
  color: var(--nv-text-dark-bg);
}

/* Responsive */
@media (min-width: 768px) {
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .contact-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .about-grid {
    grid-template-columns: 1fr 1fr;
  }

  .about-image img {
    margin: 0;
  }
}

@media (min-width: 960px) {
  .nav-desktop {
    display: flex;
  }

  .menu-toggle {
    display: none;
  }

  .hero-grid {
    grid-template-columns: 65% 35%;
  }

  .hero-text h2 em {
    font-size: 70px;
  }

  .hero-text .subtitle {
    font-size: 46px;
  }

  .site-logo img {
    max-width: 350px;
  }

  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

@media (max-width: 959px) {
  .hero {
    min-height: 600px;
  }

  .hero-text h2 em,
  .hero-text .subtitle {
    font-size: 34px;
  }

  .cta-section h2,
  .grow-section h2 {
    font-size: 34px;
  }

  .page-banner h1 {
    font-size: 34px;
  }
}