:root {
  --primary-color: #4285f4;
  --secondary-color: #34a853;
  --accent-color: #ea4335;
  --text-color: #333333;
  --light-text: #ffffff;
  --background-color: #f9f9f9;
  --card-color: #ffffff;
  --footer-color: #333333;
  --border-radius: 8px;
  --box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

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

body {
  font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--background-color);
}

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

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
header {
  background-color: var(--primary-color);
  color: var(--light-text);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.logo {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--light-text);
}

.logo span {
  color: var(--secondary-color);
}

.nav-links {
  display: flex;
  gap: 2rem;
}

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

.nav-links a:hover {
  color: rgba(255, 255, 255, 0.8);
}

.menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--light-text);
  cursor: pointer;
}

/* Hero Section */
.hero {
  padding: 5rem 0;
  text-align: center;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: var(--light-text);
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.2rem;
  max-width: 700px;
  margin: 0 auto 2rem auto;
}

.cta-button {
  display: inline-block;
  padding: 0.8rem 2rem;
  background-color: var(--accent-color);
  color: var(--light-text);
  border-radius: var(--border-radius);
  font-weight: 600;
  transition: background-color 0.3s ease;
}

.cta-button:hover {
  background-color: #d93526;
  color: var(--light-text);
}

/* Features */
.features {
  padding: 5rem 0;
}

.section-title {
  text-align: center;
  margin-bottom: 3rem;
  font-size: 2.2rem;
  color: var(--primary-color);
}

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

.feature-card {
  background-color: var(--card-color);
  border-radius: var(--border-radius);
  padding: 2rem;
  box-shadow: var(--box-shadow);
  transition: transform 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
}

.feature-card h3 {
  font-size: 1.4rem;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

/* Subscription */
.subscription {
  padding: 5rem 0;
  background-color: var(--card-color);
}

.plans {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.plan-card {
  background-color: var(--background-color);
  border-radius: var(--border-radius);
  padding: 2rem;
  text-align: center;
  box-shadow: var(--box-shadow);
}

.plan-card.featured {
  border: 2px solid var(--primary-color);
  transform: scale(1.05);
}

.plan-card h3 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

.price {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--primary-color);
}

.price span {
  font-size: 1rem;
  font-weight: 400;
  color: var(--text-color);
}

.plan-features {
  margin-bottom: 2rem;
  list-style-type: none;
}

.plan-features li {
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

/* Content Pages */
.content-page {
  padding: 4rem 0;
}

.content-page h1 {
  margin-bottom: 2rem;
  color: var(--primary-color);
}

.content-page h2 {
  margin: 2rem 0 1rem;
  color: var(--secondary-color);
}

.content-page p {
  margin-bottom: 1.5rem;
}

.content-page ul, .content-page ol {
  margin-bottom: 1.5rem;
  padding-left: 2rem;
}

.content-page li {
  margin-bottom: 0.5rem;
}

/* Footer */
footer {
  background-color: var(--footer-color);
  color: var(--light-text);
  padding: 3rem 0 1.5rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-column h3 {
  font-size: 1.2rem;
  margin-bottom: 1.5rem;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.7rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.8);
}

.footer-links a:hover {
  color: var(--light-text);
}

.copyright {
  text-align: center;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
  .menu-btn {
    display: block;
  }

  .nav-links {
    position: fixed;
    top: 60px;
    left: 0;
    width: 100%;
    height: 0;
    background-color: var(--primary-color);
    flex-direction: column;
    overflow: hidden;
    transition: height 0.3s ease;
    opacity: 0;
    padding: 0;
    gap: 0;
  }

  .nav-links.active {
    height: auto;
    opacity: 1;
    padding: 1rem 0;
  }

  .nav-links a {
    display: block;
    padding: 1rem 2rem;
    width: 100%;
    text-align: center;
  }

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

  .hero p {
    font-size: 1rem;
  }

  .plan-card.featured {
    transform: scale(1);
  }
}