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

:root {
  --primary-color: #2563eb;
  --primary-dark: #1d4ed8;
  --secondary-color: #64748b;
  --accent-color: #f59e0b;
  --success-color: #10b981;
  --background-color: #ffffff;
  --surface-color: #f8fafc;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --border-color: #e2e8f0;
  --shadow-light: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-medium: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-large: 0 10px 15px rgba(0, 0, 0, 0.1);
  --border-radius: 8px;
  --transition: all 0.3s ease;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--background-color);
}

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

/* Header */
.header {
  background: var(--background-color);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.nav-brand h1 {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--primary-color);
}

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

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

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

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
}

/* Buttons */
.btn-primary, .btn-secondary {
  color: white;
  display: inline-block;
  padding: 12px 24px;
  border: none;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  font-size: 1rem;
}

.btn-primary, .nav-links a.btn-primary {
  background: var(--primary-color);
  color: white;
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

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

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

.btn-large {
  padding: 16px 32px;
  font-size: 1.1rem;
}

/* Hero Section */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  padding: 6rem 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: bold;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  line-height: 1.6;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-image img {
  width: 100%;
  height: auto;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-large);
}

/* Features Section */
.features {
  padding: 6rem 0;
  background: var(--surface-color);
}

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

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

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

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-medium);
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.feature-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.feature-card p {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Stats Section */
.stats {
  padding: 4rem 0;
  background: var(--primary-color);
  color: white;
}

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

.stat-number {
  font-size: 3rem;
  font-weight: bold;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 1.1rem;
  opacity: 0.9;
}

/* About Section */
.about {
  padding: 6rem 0;
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-text h2 {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.about-text p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  line-height: 1.6;
}

.feature-list {
  list-style: none;
}

.feature-list li {
  padding: 0.5rem 0;
  font-size: 1.1rem;
  color: var(--text-primary);
}

.about-image img {
  width: 100%;
  height: auto;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-medium);
}

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

.cta-content h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.cta-content p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

/* Footer */
.footer {
  background: var(--text-primary);
  color: white;
  padding: 3rem 0 1rem;
}

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

.footer-section h3,
.footer-section h4 {
  margin-bottom: 1rem;
}

.footer-section ul {
  list-style: none;
}

.footer-section ul li {
  margin-bottom: 0.5rem;
}

.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: var(--transition);
}

.footer-section a:hover {
  color: white;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  padding-top: 1rem;
  text-align: center;
  opacity: 0.8;
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
}

.modal-content {
  background-color: var(--background-color);
  margin: 15% auto;
  padding: 2rem;
  border-radius: var(--border-radius);
  width: 90%;
  max-width: 500px;
  position: relative;
}

.close {
  position: absolute;
  right: 1rem;
  top: 1rem;
  font-size: 2rem;
  cursor: pointer;
  color: var(--text-secondary);
}

.close:hover {
  color: var(--text-primary);
}

.signup-form {
  margin-top: 2rem;
}

.signup-form input {
  width: 100%;
  padding: 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  margin-bottom: 1rem;
  font-size: 1rem;
}

.signup-form button {
  width: 100%;
}

.cta-btn {
  --tw-text-opacity: 1;
  color: rgb(37 99 235 / var(--tw-text-opacity, 1));
  font-weight: 600;
  font-size: 1.25rem;
  line-height: 1.75rem;
  padding-left: 2.5rem;
  padding-right: 2.5rem;
  padding-top: 1rem;
  padding-bottom: 1rem;
  --tw-bg-opacity: 1;
  background-color: rgb(255 255 255 / var(--tw-bg-opacity, 1));
  border-radius: .5rem;
}

.cta-btn:hover {
  --tw-bg-opacity: 1;
  background-color: rgb(243 244 246 / var(--tw-bg-opacity, 1));
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .mobile-menu-btn {
    display: block;
  }

  .hero {
    grid-template-columns: 1fr;
    text-align: center;
    padding: 4rem 20px;
  }

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

  .about-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-buttons {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .btn-large {
    width: 100%;
    max-width: 300px;
  }
}