/* ===============================
   General Reset & Base Styles
=============================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: #1f2937; /* dark gray */
  background-color: #f9fafb; /* light gray */
}

a {
  color: #2563eb; /* blue */
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* ===============================
   Header
=============================== */
header {
  background-color: #ffffff;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

header h1 {
  font-size: 1.5rem;
  font-weight: bold;
  color: #1f2937;
}

nav a {
  margin-left: 1.5rem;
  font-weight: 500;
}

/* ===============================
   Hero Section
=============================== */
.hero {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 2rem auto;
  padding: 2rem;
  background-color: #ffffff;
  border-radius: 0.5rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.hero-text {
  flex: 1;
  min-width: 300px;
  margin-right: 2rem;
}

.hero-text h2 {
  font-size: 2rem;
  font-weight: bold;
  margin-bottom: 1rem;
}

.hero-text p {
  margin-bottom: 1.5rem;
}

.hero-text ul {
  list-style: none;
}

.hero-text ul li {
  margin-bottom: 0.5rem;
  padding-left: 1.5rem;
  position: relative;
}

.hero-text ul li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: #16a34a; /* green check */
  font-weight: bold;
}

.hero img {
  flex: 1;
  max-width: 400px;
  border-radius: 0.5rem;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

/* ===============================
   Sections
=============================== */
section {
  max-width: 1200px;
  margin: 3rem auto;
  padding: 2rem;
}

section h2 {
  font-size: 1.75rem;
  font-weight: bold;
  margin-bottom: 1.5rem;
  color: #111827;
}

.section-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.card {
  flex: 1;
  min-width: 250px;
  background-color: #ffffff;
  padding: 1.5rem;
  border-radius: 0.5rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.card.highlight {
  border: 2px solid #2563eb; /* blue highlight */
}

/* ===============================
   Footer
=============================== */
footer {
  text-align: center;
  font-size: 0.875rem;
  color: #6b7280; /* gray */
  padding: 2rem;
}

footer a {
  margin: 0 0.5rem;
  color: #2563eb;
}

/* ===============================
   Forms & Buttons
=============================== */
input, select, textarea {
  width: 100%;
  padding: 0.5rem 0.75rem;
  margin-top: 0.5rem;
  border: 1px solid #d1d5db; /* light gray border */
  border-radius: 0.375rem;
  font-size: 1rem;
}

button {
  padding: 0.5rem 1rem;
  border-radius: 0.375rem;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: background-color 0.2s ease;
}

button.primary {
  background-color: #2563eb;
  color: #ffffff;
}

button.primary:hover {
  background-color: #1e40af;
}

button.secondary {
  background-color: #ffffff;
  color: #2563eb;
  border: 1px solid #2563eb;
}

button.secondary:hover {
  background-color: #e0f2fe;
}

/* ===============================
   Responsive
=============================== */
@media (max-width: 768px) {
  .hero {
    flex-direction: column;
  }

  .hero-text {
    margin-right: 0;
    margin-bottom: 1.5rem;
  }

  nav {
    display: none;
  }
}