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

:root {
  --primary-color: #2563eb;
  --primary-dark: #1e40af;
  --secondary-color: #10b981;
  --text-dark: #1f2937;
  --text-light: #6b7280;
  --bg-light: #f9fafb;
  --white: #ffffff;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--white);
}

/* Header & Navigation */
header {
  position: sticky;
  top: 0;
  background: var(--white);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  z-index: 1000;
}

nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
  text-decoration: none;
}

.logo svg {
  width: 40px;
  height: 40px;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.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);
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: var(--white);
  padding: 6rem 2rem;
  text-align: center;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: 1rem;
  font-weight: 800;
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  opacity: 0.95;
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  padding: 0.875rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: 0.5rem;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: all 0.3s;
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
  background-color: var(--secondary-color);
  color: var(--white);
}

.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
  background-color: #059669;
}

/* Features Section */
.features {
  max-width: 1200px;
  margin: 0 auto;
  padding: 5rem 2rem;
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 3rem;
  color: var(--text-dark);
}

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

.feature-card {
  background: var(--bg-light);
  padding: 2rem;
  border-radius: 0.75rem;
  border-left: 4px solid var(--primary-color);
  transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.feature-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--text-dark);
}

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

/* Promotional Text Section */
.promo {
  background: var(--bg-light);
  padding: 4rem 2rem;
  margin: 3rem 0;
}

.promo-content {
  max-width: 1200px;
  margin: 0 auto;
}

.promo p {
  font-size: 1.25rem;
  text-align: center;
  color: var(--text-dark);
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.8;
}

/* Screenshots Section */
.screenshots {
  max-width: 1200px;
  margin: 0 auto;
  padding: 5rem 2rem;
}

.screenshots-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.screenshot-item {
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s;
}

.screenshot-item:hover {
  transform: scale(1.05);
}

.screenshot-item img {
  width: 100%;
  height: auto;
  display: block;
}

/* Stats Section */
.stats {
  background: var(--primary-color);
  color: var(--white);
  padding: 3rem 2rem;
  margin: 3rem 0;
}

.stats-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  text-align: center;
}

.stat-item h3 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.stat-item p {
  font-size: 1rem;
  opacity: 0.9;
}

/* Footer */
footer {
  background: var(--text-dark);
  color: var(--white);
  padding: 2rem;
  text-align: center;
  margin-top: 5rem;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--white);
  text-decoration: none;
  transition: color 0.3s;
}

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

.footer-copyright {
  font-size: 0.875rem;
  opacity: 0.8;
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2rem;
  }

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

  .section-title {
    font-size: 2rem;
  }

  .nav-links {
    display: none;
  }

  .cta-buttons {
    flex-direction: column;
  }

  .btn {
    width: 100%;
    text-align: center;
  }
}