:root {
  --primary-color: #6B46C1;
  --secondary-color: #EC4899;
  --accent-color: #F59E0B;
  --success-color: #10B981;
  --warning-color: #F59E0B;
  --error-color: #EF4444;
  --neutral-50: #F9FAFB;
  --neutral-100: #F3F4F6;
  --neutral-200: #E5E7EB;
  --neutral-300: #D1D5DB;
  --neutral-400: #9CA3AF;
  --neutral-500: #6B7280;
  --neutral-600: #4B5563;
  --neutral-700: #374151;
  --neutral-800: #1F2937;
  --neutral-900: #111827;
  --white: #FFFFFF;
  --black: #000000;
  
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;
  
  --border-radius: 8px;
  --border-radius-lg: 12px;
  --border-radius-xl: 16px;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.5;
  color: var(--neutral-800);
  background-color: var(--white);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Cookie Notice */
.cookie-notice {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--neutral-900);
  color: var(--white);
  padding: var(--spacing-md);
  z-index: 1000;
  box-shadow: var(--shadow-lg);
}

.cookie-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  gap: var(--spacing-md);
}

.cookie-actions {
  display: flex;
  gap: var(--spacing-sm);
}

.btn-accept {
  background: var(--primary-color);
  color: var(--white);
  border: none;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius);
  cursor: pointer;
  font-weight: 500;
  transition: background-color 0.2s ease;
}

.btn-accept:hover {
  background: #553C9A;
}

.btn-learn {
  color: var(--neutral-300);
  text-decoration: underline;
  padding: var(--spacing-sm) var(--spacing-md);
}

/* Header */
.header {
  background: var(--white);
  border-bottom: 1px solid var(--neutral-200);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-md);
  max-width: 1200px;
  margin: 0 auto;
}

.nav-brand h1 {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-size: 1.5rem;
  font-weight: 700;
}

.nav-links {
  display: flex;
  gap: var(--spacing-lg);
}

.nav-links a {
  color: var(--neutral-700);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
}

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

/* Hero Section */
.hero {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: var(--white);
  padding: var(--spacing-3xl) 0;
}

.hero-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.hero-text h2 {
  font-size: 3rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-lg);
}

.hero-text p {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xl);
  opacity: 0.9;
  line-height: 1.6;
}

.hero-cta {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.btn-primary {
  background: var(--accent-color);
  color: var(--white);
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  text-decoration: none;
  font-weight: 600;
  font-size: 1.125rem;
  display: inline-block;
  text-align: center;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-lg);
  align-self: flex-start;
}

.btn-primary:hover {
  background: #D97706;
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.hero-stats {
  display: flex;
  gap: var(--spacing-lg);
  font-size: 0.875rem;
  opacity: 0.8;
}

.hero-stats span {
  padding: var(--spacing-xs) var(--spacing-sm);
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius);
  backdrop-filter: blur(10px);
}

.hero-image {
  position: relative;
}

.hero-image img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-xl);
}

/* About Section */
.about {
  padding: var(--spacing-3xl) 0;
  background: var(--neutral-50);
}

.about h2 {
  text-align: center;
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-3xl);
  color: var(--neutral-800);
}

.about-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-3xl);
  align-items: start;
}

.about-content p {
  margin-bottom: var(--spacing-lg);
  line-height: 1.6;
  color: var(--neutral-600);
  font-size: 1.125rem;
}

.about-features {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.feature {
  background: var(--white);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  transition: transform 0.2s ease;
}

.feature:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.feature h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--neutral-800);
}

.feature p {
  color: var(--neutral-600);
  font-size: 0.95rem;
  margin: 0;
}

/* Testimonials */
.testimonials {
  padding: var(--spacing-3xl) 0;
  background: var(--white);
}

.testimonials h2 {
  text-align: center;
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-3xl);
  color: var(--neutral-800);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.testimonial {
  background: var(--neutral-50);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  transition: transform 0.2s ease;
}

.testimonial:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.testimonial-content {
  margin-bottom: var(--spacing-lg);
}

.testimonial-content p {
  font-style: italic;
  color: var(--neutral-700);
  line-height: 1.6;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.testimonial-author img {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
}

.testimonial-author h4 {
  font-weight: 600;
  color: var(--neutral-800);
  margin-bottom: var(--spacing-xs);
}

.testimonial-author span {
  color: var(--neutral-500);
  font-size: 0.875rem;
}

/* Contact Section */
.contact {
  padding: var(--spacing-3xl) 0;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--white);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.contact-info h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
}

.contact-info p {
  font-size: 1.125rem;
  margin-bottom: var(--spacing-xl);
  opacity: 0.9;
  line-height: 1.6;
}

.contact-benefits {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.benefit {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-weight: 500;
}

.benefit-icon {
  font-size: 1.25rem;
}

.contact-form {
  background: var(--white);
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-xl);
}

.form h3 {
  color: var(--neutral-800);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
  color: var(--neutral-700);
}

.form-group input {
  width: 100%;
  padding: var(--spacing-md);
  border: 1px solid var(--neutral-300);
  border-radius: var(--border-radius);
  font-size: 1rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(107, 70, 193, 0.1);
}

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.form-checkbox input {
  margin-top: 2px;
}

.form-checkbox label {
  font-size: 0.875rem;
  color: var(--neutral-600);
  line-height: 1.4;
}

.form-checkbox label a {
  color: var(--primary-color);
  text-decoration: none;
}

.form-checkbox label a:hover {
  text-decoration: underline;
}

.btn-submit {
  width: 100%;
  background: var(--primary-color);
  color: var(--white);
  border: none;
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.btn-submit:hover {
  background: #553C9A;
}

/* Footer */
.footer {
  background: var(--neutral-900);
  color: var(--white);
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  margin-bottom: var(--spacing-lg);
}

.footer-brand h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-brand p {
  color: var(--neutral-400);
}

.footer-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
}

.footer-section h4 {
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

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

.footer-section ul li {
  margin-bottom: var(--spacing-xs);
}

.footer-section ul li a {
  color: var(--neutral-400);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-section ul li a:hover {
  color: var(--white);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--neutral-700);
  color: var(--neutral-400);
}

/* Modals */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
}

.modal-content {
  background-color: var(--white);
  margin: 5% auto;
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  width: 90%;
  max-width: 600px;
  max-height: 80vh;
  overflow-y: auto;
  position: relative;
  box-shadow: var(--shadow-xl);
}

.close {
  color: var(--neutral-400);
  float: right;
  font-size: 2rem;
  font-weight: bold;
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-lg);
  cursor: pointer;
  transition: color 0.2s ease;
}

.close:hover {
  color: var(--neutral-800);
}

.modal-content h2 {
  color: var(--neutral-800);
  margin-bottom: var(--spacing-lg);
  font-size: 1.75rem;
}

.modal-content h3 {
  color: var(--neutral-700);
  margin: var(--spacing-lg) 0 var(--spacing-sm);
  font-size: 1.25rem;
}

.modal-body p {
  margin-bottom: var(--spacing-md);
  line-height: 1.6;
  color: var(--neutral-600);
}

.modal-body ul {
  margin-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.modal-body li {
  margin-bottom: var(--spacing-xs);
  color: var(--neutral-600);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .about-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-content {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

@media (max-width: 768px) {
  .nav {
    flex-direction: column;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
  }
  
  .nav-links {
    gap: var(--spacing-md);
  }
  
  .hero-text h2 {
    font-size: 2rem;
  }
  
  .hero-stats {
    flex-direction: column;
    gap: var(--spacing-sm);
    align-items: center;
  }
  
  .about h2,
  .testimonials h2,
  .contact-info h2 {
    font-size: 2rem;
  }
  
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-links {
    grid-template-columns: 1fr;
    text-align: left;
  }
  
  .modal-content {
    margin: 10% auto;
    width: 95%;
    padding: var(--spacing-lg);
  }
  
  .cookie-content {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-sm);
  }
}