/* Base styles */

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  color: #1f2933;
  background-color: #ffffff;
}

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

a {
  color: #176b5b;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  width: 90%;
  max-width: 1100px;
  margin: 0 auto;
}

.section,
.section-light {
  padding: 2rem 0;
}

.section-light {
  background-color: #f7fafc;
}

.section h2,
.section-light h2 {
  margin-top: 0;
  font-size: 2rem;
}

.section-lead {
  font-size: 1.1rem;
  font-weight: 500;
  margin-bottom: 1rem;
}

.bullet-list {
  padding-left: 1.2rem;
}

/* Accessibility */

.skip-link {
  position: absolute;
  left: -999px;
  top: -999px;
  background: #176b5b;
  color: #fff;
  padding: 0.5rem 1rem;
  z-index: 1000;
}

.skip-link:focus {
  left: 0.5rem;
  top: 0.5rem;
}

/* Header / Nav */

.site-header {
  border-bottom: 1px solid #e5e7eb;
  background-color: #ffffff;
  position: sticky;
  top: 0;
  z-index: 999;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0;
}

.logo {
  max-height: 100px;
}

.main-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 1.5rem;
}

.main-nav a {
  font-size: 0.95rem;
  font-weight: 500;
  color: #111827;
}

.main-nav a:hover {
  color: #176b5b;
}

/* Hero */

.hero {
  padding: 2rem 0 1rem;
  background: linear-gradient(135deg, #f3faf7, #ffffff);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 2.5rem;
  align-items: center;
}

.hero-text h1 {
  font-size: 2.4rem;
  line-height: 1.2;
  margin-top: 0;
  margin-bottom: 1rem;
}

.hero-sub {
  font-size: 1.05rem;
  max-width: 32rem;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  color: #047857;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.hero-image img {
  border-radius: 8px;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.15);
}

/* Buttons */

.btn-primary {
  display: inline-block;
  margin-top: 1.5rem;
  padding: 0.75rem 1.5rem;
  background-color: #176b5b;
  color: #ffffff;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
}

.btn-primary:hover {
  background-color: #0f513f;
  text-decoration: none;
}

/* Layout helpers */

.two-col {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2.5rem;
  align-items: flex-start;
}

/* Cards */

.cards-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.card {
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  padding: 1.5rem;
  background-color: #ffffff;
  box-shadow: 0 3px 10px rgba(15, 23, 42, 0.03);
}

.card h3 {
  margin-top: 0;
  font-size: 1.1rem;
}

.card-link {
  display: inline-block;
  margin-top: 0.75rem;
  font-size: 0.9rem;
  font-weight: 500;
}

.card-link::after {
  content: " →";
}

/* Library */

.library-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2.5rem;
  margin-top: 2rem;
}

/* Contact */

.contact-block h3 {
  margin-top: 0;
}

.contact-detail {
  margin-top: 1rem;
}

.note {
  margin-top: 1.5rem;
  font-size: 0.9rem;
  color: #4b5563;
}

/* Footer */

.site-footer {
  border-top: 1px solid #e5e7eb;
  padding: 1.5rem 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-logo img {
  max-height: 32px;
}

.footer-nav {
  display: flex;
  gap: 1rem;
  font-size: 0.85rem;
}

.footer-nav a {
  color: #4b5563;
}

.footer-nav a:hover {
  color: #176b5b;
}

/* Responsive */

@media (max-width: 900px) {
  .hero-inner,
  .two-col,
  .cards-grid,
  .library-layout,
  .footer-inner {
    grid-template-columns: 1fr;
    display: grid;
  }

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

@media (max-width: 640px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  .main-nav ul {
    flex-wrap: wrap;
    gap: 0.75rem;
  }

  .hero {
    padding-top: 3rem;
  }

  .hero-text h1 {
    font-size: 1.9rem;
  }

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

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
   .two-col {
	  gap: 0 rem;
	}
}