/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-color: #1976d2;
  --primary-light: #42a5f5;
  --primary-dark: #1565c0;
  --secondary-color: #dc004e;
  --secondary-light: #ff5983;
  --secondary-dark: #9a0036;
  --text-primary: #212121;
  --text-secondary: #757575;
  --bg-default: #fafafa;
  --bg-paper: #ffffff;
  --success-color: #4caf50;
  --warning-color: #ff9800;
  --info-color: #2196f3;
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
  --shadow-xl: 0 20px 50px rgba(0,0,0,0.15);
  --border-radius: 8px;
  --border-radius-lg: 16px;
  --transition: all 0.3s ease;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', 'Roboto', 'Helvetica', 'Arial', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-default);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 1rem;
}

h1 {
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 2.75rem;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 2.25rem;
}

h4 {
  font-size: 1.75rem;
}

h5 {
  font-size: 1.5rem;
}

h6 {
  font-size: 1.25rem;
}

p {
  margin-bottom: 1rem;
}

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

a:hover {
  color: var(--primary-dark);
}

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: 5rem 0;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 24px;
  font-weight: 600;
  font-size: 1rem;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  text-align: center;
  box-shadow: 0 4px 14px 0 rgba(25, 118, 210, 0.39);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px 0 rgba(25, 118, 210, 0.49);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: white;
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
}

.btn-secondary {
  background: linear-gradient(135deg, var(--secondary-color), var(--secondary-dark));
  color: white;
  box-shadow: 0 4px 14px 0 rgba(220, 0, 78, 0.39);
}

.btn-secondary:hover {
  background: linear-gradient(135deg, var(--secondary-dark), var(--secondary-color));
  box-shadow: 0 6px 20px 0 rgba(220, 0, 78, 0.49);
}

.btn-outline {
  background: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
  box-shadow: none;
}

.btn-outline:hover {
  background: var(--primary-color);
  color: white;
  box-shadow: 0 4px 14px 0 rgba(25, 118, 210, 0.39);
}

.btn-large {
  padding: 16px 32px;
  font-size: 1.125rem;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  padding: 1rem 0;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
}

.logo-icon {
  width: 32px;
  height: 32px;
  color: var(--primary-color);
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
}

.nav a {
  color: var(--text-primary);
  font-weight: 500;
  text-decoration: none;
  padding: 0.5rem 0;
  position: relative;
}

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

.nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: var(--transition);
}

.nav a:hover::after {
  width: 100%;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.mobile-menu-toggle span {
  display: block;
  width: 25px;
  height: 2px;
  background: var(--text-primary);
  margin: 5px 0;
  transition: var(--transition);
}

/* Hero Section */
.hero {
  padding-top: 6rem;
  padding-bottom: 5rem;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  text-align: center;
}

.hero h1 {
  color: white;
  margin-bottom: 1.5rem;
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  color: rgba(255, 255, 255, 0.9);
}

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

/* Section Styling */
.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header h2 {
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.section-header p {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto;
}

/* Grid */
.grid {
  display: grid;
  gap: 2rem;
}

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

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

/* Cards */
.card {
  background: var(--bg-paper);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

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

.card-icon {
  width: 64px;
  height: 64px;
  margin-bottom: 1.5rem;
  color: var(--primary-color);
}

.card h3 {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.card p {
  color: var(--text-secondary);
  margin-bottom: 0;
}

/* Features Section */
.features {
  background: var(--bg-paper);
}

/* Technology Section */
.technology {
  background: var(--bg-default);
}

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

.tech-item {
  text-align: center;
  padding: 2rem;
  background: var(--bg-paper);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

.tech-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.tech-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.tech-item h4 {
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.tech-item p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-bottom: 0;
}

/* Benefits Section */
.benefits {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
}

.benefits h2 {
  color: white;
}

.benefits p {
  color: rgba(255, 255, 255, 0.9);
}

.benefit-card {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: white;
}

.benefit-card:hover {
  background: rgba(255, 255, 255, 0.2);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.benefit-card h3 {
  color: white;
}

.benefit-card p {
  color: rgba(255, 255, 255, 0.9);
}

.benefit-number {
  font-size: 3rem;
  font-weight: 700;
  color: white;
  margin-bottom: 0.5rem;
}

/* Testimonials Section */
.testimonials {
  background: var(--bg-paper);
}

.testimonial-card {
  background: var(--bg-default);
}

.testimonial-text {
  font-style: italic;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.testimonial-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
}

.testimonial-name {
  font-weight: 600;
  color: var(--text-primary);
}

.testimonial-title {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* Pricing Section */
.pricing {
  background: var(--bg-default);
}

.pricing-card {
  background: var(--bg-paper);
  text-align: center;
  position: relative;
}

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

.pricing-card.featured::before {
  content: 'Most Popular';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary-color);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.pricing-price {
  font-size: 3rem;
  font-weight: 700;
  color: var(--primary-color);
  margin: 1.5rem 0;
}

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

.pricing-features {
  list-style: none;
  margin: 2rem 0;
  text-align: left;
}

.pricing-features li {
  padding: 0.75rem 0;
  border-bottom: 1px solid #e0e0e0;
  color: var(--text-secondary);
}

.pricing-features li::before {
  content: '✓';
  color: var(--success-color);
  margin-right: 0.75rem;
  font-weight: bold;
}

.pricing-features li:last-child {
  border-bottom: none;
}

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

.cta h2 {
  color: white;
}

.cta p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.25rem;
  margin-bottom: 2rem;
}

.cta-form {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  max-width: 600px;
  margin: 0 auto;
}

.cta-form input {
  flex: 1;
  min-width: 250px;
  padding: 14px 20px;
  border: none;
  border-radius: var(--border-radius);
  font-size: 1rem;
}

.cta-form input:focus {
  outline: 2px solid rgba(255, 255, 255, 0.5);
}

.cta .btn {
  background: white;
  color: var(--primary-color);
  box-shadow: 0 4px 14px 0 rgba(0, 0, 0, 0.2);
}

.cta .btn:hover {
  background: var(--bg-default);
  box-shadow: 0 6px 20px 0 rgba(0, 0, 0, 0.3);
}

/* Footer */
.footer {
  background: #1a1a2e;
  color: rgba(255, 255, 255, 0.7);
  padding: 4rem 0 2rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-section h4 {
  color: white;
  margin-bottom: 1.5rem;
}

.footer-section p {
  font-size: 0.875rem;
}

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

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: var(--transition);
}

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

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.875rem;
}

.social-links {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.social-links a {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  transition: var(--transition);
}

.social-links a:hover {
  background: var(--primary-color);
  transform: translateY(-2px);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 2rem;
  }

  h3 {
    font-size: 1.75rem;
  }

  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }

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

  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: 1rem 2rem;
    box-shadow: var(--shadow-md);
    display: none;
  }

  .nav.active {
    display: flex;
  }

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

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

  .cta-form input {
    width: 100%;
  }

  .cta-form .btn {
    width: 100%;
  }
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in {
  animation: fadeInUp 0.6s ease forwards;
}

/* Utility Classes */
.text-center {
  text-align: center;
}

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

.text-secondary {
  color: var(--text-secondary);
}

.mt-2 {
  margin-top: 2rem;
}

.mb-2 {
  margin-bottom: 2rem;
}

.py-4 {
  padding-top: 4rem;
  padding-bottom: 4rem;
}