:root {
  --primary-color: #4F46E5; /* Indigo */
  --secondary-color: #10B981; /* Emerald */
  --background-color: #F9FAFB; /* Gray 50 */
  --text-color: #1F2937; /* Gray 800 */
  --heading-font: 'Poppins', sans-serif; /* Example font - needs import */
  --body-font: 'Inter', sans-serif; /* Example font - needs import */
  --container-width: 1140px;
  --border-radius: 8px;
}

/* Import fonts (example using Google Fonts) */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@600;700&family=Inter:wght@400;500&display=swap');

/* Reset and Base Styles */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--body-font);
  background-color: var(--background-color);
  color: var(--text-color);
  line-height: 1.6;
  font-size: 16px;
}

h1, h2, h3 {
  font-family: var(--heading-font);
  font-weight: 700;
  margin-bottom: 1rem;
  line-height: 1.3;
}

h1 {
  font-size: 2.5rem; /* Adjust as needed */
}

h2 {
  font-size: 2rem;
  text-align: center;
  margin-bottom: 2.5rem;
}

h3 {
  font-size: 1.5rem;
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

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

ul {
  list-style: none;
}

/* Layout */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

section {
  padding: 4rem 0;
}

/* Header & Navigation */
.header {
  background-color: #fff; /* White background for header */
  padding: 1rem 0;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--heading-font);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
}

.nav-links {
  display: flex;
  gap: 1.5rem;
}

.nav-links a {
  color: var(--text-color);
  font-weight: 500;
}

.nav-links a:hover {
  color: var(--primary-color);
}

/* Hero Section */
.hero {
  background-color: #fff; /* Optional: different background for hero */
  text-align: center;
  padding: 6rem 0;
}

.hero h1 {
  color: var(--primary-color);
  margin-bottom: 1.5rem;
}

.hero p {
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto 2rem auto;
  color: #4B5563; /* Gray 600 */
}

.cta-button {
  display: inline-block;
  background-color: var(--primary-color);
  color: #fff;
  padding: 0.8rem 1.8rem;
  border-radius: var(--border-radius);
  font-weight: 500;
  transition: background-color 0.3s ease, transform 0.2s ease;
}

.cta-button:hover {
  background-color: #4338CA; /* Darker Indigo */
  color: #fff;
  transform: translateY(-2px);
}

/* Features Section */
.features {
  background-color: var(--background-color);
}

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

.feature-item {
  background-color: #fff;
  padding: 2rem;
  border-radius: var(--border-radius);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 12px rgba(0, 0, 0, 0.08);
}

.feature-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 1.5rem auto;
  /* Add background or styles for icons */
  background-color: var(--primary-color);
  padding: 10px;
  border-radius: 50%;
  /* TEMP: Replace with actual SVG styling or background images */
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff; /* For text-based icons */
  font-size: 1.5rem; /* For text-based icons */
}

.feature-item h3 {
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

/* About Section */
.about {
    background-color: #fff;
    text-align: center;
}

.about p {
    max-width: 700px;
    margin: 0 auto;
    color: #4B5563; /* Gray 600 */
}

/* Contact Section */
.contact {
  background-color: var(--primary-color);
  color: #fff;
  text-align: center;
}

.contact h2 {
  color: #fff;
}

.contact p {
  font-size: 1.1rem;
  margin-bottom: 2rem;
}

.contact .cta-button {
  background-color: #fff;
  color: var(--primary-color);
}

.contact .cta-button:hover {
  background-color: #E0E7FF; /* Indigo 100 */
  color: var(--primary-color);
}

/* Footer */
.footer {
  background-color: #1F2937; /* Gray 800 */
  color: #D1D5DB; /* Gray 300 */
  padding: 1.5rem 0;
  text-align: center;
  font-size: 0.9rem;
}

/* --- Responsive Design --- */

@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }
  h2 {
    font-size: 1.75rem;
  }

  .navbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-links {
    margin-top: 1rem;
    gap: 1rem;
  }

  .hero {
    padding: 4rem 0;
  }

  section {
    padding: 3rem 0;
  }
}