:root {
  --primary-color: #4f46e5;
  --accent-color: #10b981;
  --dark-bg: #0f172a;
  --light-bg: #f9fafb;
  --text-color: #1e293b;
  --font-heading: 'Inter', sans-serif;
  --font-body: 'Roboto', sans-serif;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text-color);
  background: var(--light-bg);
  line-height: 1.6;
}

.container {
  max-width: 1140px;
  margin: auto;
  padding: 20px;
}

header {
  background: var(--dark-bg);
  color: white;
  padding: 20px 0;
  position: sticky;
  top: 0;
  z-index: 1000;
}

header .brand {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 600;
}

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

nav a {
  color: white;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
}

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

.hero {
  background: linear-gradient(135deg, #1e3a8a, #4f46e5);
  color: white;
  text-align: center;
  padding: 80px 20px;
}

.hero h2 {
  font-size: 2.5rem;
  font-weight: bold;
}

.cta-button {
  background: var(--accent-color);
  color: white;
  padding: 14px 30px;
  text-decoration: none;
  font-weight: bold;
  border-radius: 6px;
  display: inline-block;
  margin-top: 20px;
  transition: background 0.3s ease, transform 0.2s ease;
}

.cta-button:hover {
  background: #059669;
  transform: scale(1.03);
}

section {
  padding: 60px 20px;
}

h3 {
  font-family: var(--font-heading);
  font-size: 2rem;
  margin-bottom: 1.5rem;
}

.feature-columns {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.feature-box {
  background: white;
  border: 1px solid #e5e7eb;
  border-left: 4px solid var(--primary-color);
  border-radius: 8px;
  padding: 20px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

.plans {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
}

.plan {
  background: white;
  border: 1px solid #d1d5db;
  padding: 30px;
  border-radius: 10px;
  flex: 1;
  min-width: 260px;
  text-align: center;
  transition: transform 0.3s ease;
}

.plan:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 16px rgba(0,0,0,0.1);
}

.plan .price {
  font-size: 1.75rem;
  color: var(--primary-color);
}

.button {
  display: inline-block;
  padding: 12px 24px;
  margin-top: 15px;
  border-radius: 6px;
  font-weight: 600;
  text-decoration: none;
}

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

.button.secondary {
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
}

footer {
  background: var(--dark-bg);
  color: white;
  text-align: center;
  padding: 40px 20px;
  margin-top: 40px;
}

footer nav a {
  color: var(--accent-color);
  margin: 0 12px;
  text-decoration: none;
}