:root {
  /* Colors extracted/approximated from Bluestone Health */
  --primary-blue: #0076c0; /* Main brand blue */
  --dark-blue: #1c355e; /* Headings/Dark text */
  --light-blue-bg: #f0f8ff; /* Section backgrounds */
  --accent-cyan: #4facfe; /* Gradients/Accents */
  --text-grey: #4a5568;
  --white: #ffffff;

  /* Typography */
  --font-heading: 'Merriweather', serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;

  --spacing-container: 1200px;
  --border-radius-btn: 50px; /* Pill shape */
}

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

body {
  font-family: var(--font-body);
  color: var(--text-grey);
  line-height: 1.6;
  background-color: var(--white);
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  color: var(--dark-blue);
  line-height: 1.3;
  margin-bottom: 1rem;
}

a {
  text-decoration: none;
  color: inherit;
  transition: opacity 0.2s;
}

/* Header */
header {
  background-color: var(--white);
  padding: 1rem 2rem;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--spacing-container);
  margin: 0 auto;
}

.logo img {
  height: 50px;
  width: auto;
}

.nav-links a {
  margin-left: 2rem;
  font-weight: 500;
  color: var(--dark-blue);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.nav-links .btn-login {
  background-color: var(--primary-blue);
  color: var(--white);
  padding: 0.5rem 1.5rem;
  border-radius: var(--border-radius-btn);
}

/* Hero Section */
.hero {
  max-width: var(--spacing-container);
  margin: 0 auto;
  padding: 6rem 2rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-content h1 {
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--dark-blue);
  margin-bottom: 1.5rem;
}

.hero-content p {
  font-size: 1.125rem;
  margin-bottom: 2rem;
  max-width: 500px;
}

.hero-image img {
  width: 100%;
  height: auto;
  border-radius: 20px 20px 20px 100px; /* Slight organic shape */
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  object-fit: cover;
}

.cta-group {
  display: flex;
  gap: 1rem;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.8rem 2rem;
  border-radius: var(--border-radius-btn);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all 0.3s ease;
}

.btn-primary {
  background-color: var(--primary-blue);
  color: var(--white);
}

.btn-primary:hover {
  background-color: #005a94;
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0, 86, 179, 0.3);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--primary-blue);
  color: var(--primary-blue);
}

.btn-outline:hover {
  background-color: var(--primary-blue);
  color: var(--white);
}

/* Features Section */
.section {
  padding: 6rem 2rem;
}

.bg-light {
  background-color: var(--light-blue-bg);
}

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

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 4rem auto;
}

.section-header h2 {
  font-size: 2.5rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.card {
  background: var(--white);
  border-radius: 12px;
  padding: 3rem 2rem;
  text-align: center;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease;
}

.card:hover {
  transform: translateY(-10px);
}

.card-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  background-color: var(--light-blue-bg);
  border-radius: 50%;
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-icon img {
  width: 100%;
  height: auto;
}

.card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

/* Footer */
footer {
  background-color: var(--white);
  padding: 4rem 2rem 2rem;
  border-top: 1px solid #eaeaea;
}

.footer-content {
  max-width: var(--spacing-container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
}

.footer-logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--primary-blue);
  margin-bottom: 1rem;
  display: block;
}

.footer-col h4 {
  font-family: var(--font-body);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 1.5rem;
  color: var(--dark-blue);
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 0.8rem;
}

.footer-col ul li a:hover {
  color: var(--primary-blue);
}

.copyright {
  text-align: center;
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid #eaeaea;
  font-size: 0.9rem;
}

/* Mobile */
@media (max-width: 768px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
    padding: 4rem 1.5rem;
  }

  .hero-content h1 {
    font-size: 2.5rem;
  }

  .hero-content p {
    margin: 0 auto 2rem auto;
  }

  .cta-group {
    justify-content: center;
  }

  .nav-links {
    display: none; /* Simple hiding for MVP, would add burger menu strongly recommended for prod */
  }
}