:root {
  --primary-color: #ff4b4b;
  --secondary-color: #ffeeee;
  --text-dark: #333333;
  --text-light: #666666;
  --background-light: #f9f9f9;
  --white: #ffffff;
  --black: #000000;
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

body {
  font-family: var(--font-family);
  color: var(--text-dark);
  line-height: 1.6;
  background-color: var(--white);
}

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

/* Header */
header {
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary-color);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links {
  display: flex;
  gap: 30px;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-dark);
  font-weight: 500;
  transition: color 0.3s;
}

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

.btn-primary {
  background-color: var(--primary-color);
  color: var(--white);
  padding: 12px 24px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  transition: transform 0.2s, box-shadow 0.2s;
  display: inline-block;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(255, 75, 75, 0.3);
}

/* Hero Section */
.hero {
  padding: 160px 0 100px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 50px;
  background: linear-gradient(135deg, #fff5f5 0%, #ffffff 100%);
}

.hero-content {
  flex: 1;
}

.hero h1 {
  font-size: 3.5rem;
  line-height: 1.2;
  margin-bottom: 20px;
  font-weight: 900;
}

.hero h1 span {
  color: var(--primary-color);
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-light);
  margin-bottom: 30px;
  max-width: 500px;
}

.hero-image {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.phone-mockup {
  width: 300px;
  height: 600px;
  background-color: var(--black);
  border-radius: 40px;
  border: 8px solid #333;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0,0,0,0.2);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  color: white;
  text-align: center;
  padding: 20px;
}

/* Features/How it Works */
.features {
  padding: 100px 0;
  background-color: var(--white);
}

.section-title {
  text-align: center;
  margin-bottom: 60px;
}

.section-title h2 {
  font-size: 2.5rem;
  margin-bottom: 10px;
}

.section-title p {
  color: var(--text-light);
  font-size: 1.1rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
}

.feature-card {
  background-color: var(--background-light);
  padding: 40px;
  border-radius: 20px;
  transition: transform 0.3s;
  border: 1px solid var(--secondary-color);
}

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

.icon {
  width: 60px;
  height: 60px;
  background-color: var(--secondary-color);
  border-radius: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 24px;
  color: var(--primary-color);
}

.feature-card h3 {
  font-size: 1.5rem;
  margin-bottom: 15px;
}

.feature-card p {
  color: var(--text-light);
}

/* Download Section */
.download {
  padding: 100px 0;
  text-align: center;
  background-color: var(--secondary-color);
}

.download h2 {
  font-size: 2.5rem;
  margin-bottom: 40px;
}

/* Footer */
footer {
  background-color: var(--text-dark);
  color: var(--white);
  padding: 60px 0 20px;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  margin-bottom: 40px;
}

.footer-links a {
  color: #999;
  text-decoration: none;
  margin-left: 30px;
  transition: color 0.2s;
}

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

.copyright {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid #444;
  color: #777;
  font-size: 0.9rem;
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .hero {
    flex-direction: column;
    text-align: center;
    padding-top: 120px;
  }
  
  .hero h1 {
    font-size: 2.5rem;
  }
  
  .hero p {
    margin: 0 auto 30px;
  }
  
  .nav-links {
    display: none;
  }
  
  .footer-content {
    flex-direction: column;
    gap: 30px;
    align-items: center;
    text-align: center;
  }
  
  .footer-links a {
    margin: 0 15px;
    display: block;
    margin-bottom: 10px;
  }
}