:root {
  --primary-color: #2563eb;
  --primary-hover: #1d4ed8;
  --secondary-color: #0f172a;
  --accent-color: #10b981;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --border-color: #e2e8f0;
  --bg-light: #f8fafc;
  --bg-white: #ffffff;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --spacing-unit: 8px;
}

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

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.navbar {
  background: var(--bg-white);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
}

.brand {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary-color);
  text-decoration: none;
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  list-style: none;
  align-items: center;
  gap: 32px;
}

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

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

.btn-nav {
  padding: 8px 20px;
  border-radius: 6px;
  background: var(--primary-color);
  color: var(--bg-white);
  font-weight: 600;
  transition: background 0.2s;
}

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

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

.btn-nav-secondary:hover {
  background: var(--bg-light);
  color: var(--primary-color);
}

.hero {
  background: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
  color: var(--bg-white);
  padding: 96px 0;
  text-align: center;
}

.hero-content h1 {
  font-size: 48px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 24px;
  letter-spacing: -1px;
}

.hero-subtitle {
  font-size: 20px;
  line-height: 1.5;
  margin-bottom: 40px;
  opacity: 0.95;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s;
  border: none;
  cursor: pointer;
  font-size: 16px;
}

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

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

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

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

.btn-full {
  width: 100%;
}

.stats {
  background: var(--bg-white);
  padding: 64px 0;
  border-bottom: 1px solid var(--border-color);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 48px;
  text-align: center;
}

.stat-number {
  font-size: 48px;
  font-weight: 800;
  color: var(--primary-color);
  margin-bottom: 8px;
}

.stat-label {
  font-size: 16px;
  color: var(--text-secondary);
  font-weight: 500;
}

.section-title {
  font-size: 40px;
  font-weight: 800;
  text-align: center;
  margin-bottom: 16px;
  line-height: 1.2;
  letter-spacing: -0.5px;
}

.section-subtitle {
  font-size: 18px;
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: 56px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.features {
  padding: 96px 0;
  background: var(--bg-light);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
}

.feature-card {
  background: var(--bg-white);
  padding: 32px;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  transition: all 0.3s;
}

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

.feature-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

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

.how-it-works {
  padding: 96px 0;
  background: var(--bg-white);
}

.steps-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
  gap: 64px;
}

.step-title {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 32px;
  color: var(--primary-color);
  text-align: center;
}

.step {
  display: flex;
  gap: 20px;
  margin-bottom: 32px;
}

.step-number {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: var(--primary-color);
  color: var(--bg-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 20px;
}

.step-content h4 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}

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

.benefits {
  padding: 96px 0;
  background: var(--bg-light);
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
}

.benefit-item {
  background: var(--bg-white);
  padding: 32px;
  border-radius: 12px;
  border-left: 4px solid var(--accent-color);
  box-shadow: var(--shadow-sm);
}

.benefit-item h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

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

.verticals {
  padding: 96px 0;
  background: var(--bg-white);
}

.verticals-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}

.vertical-tag {
  background: var(--bg-light);
  padding: 12px 24px;
  border-radius: 24px;
  font-weight: 600;
  color: var(--text-primary);
  border: 2px solid var(--border-color);
  transition: all 0.2s;
}

.vertical-tag:hover {
  background: var(--primary-color);
  color: var(--bg-white);
  border-color: var(--primary-color);
  transform: translateY(-2px);
}

.testimonials {
  padding: 96px 0;
  background: var(--bg-light);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
}

.testimonial-card {
  background: var(--bg-white);
  padding: 32px;
  border-radius: 12px;
  box-shadow: var(--shadow-md);
}

.testimonial-text {
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  margin-bottom: 24px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.testimonial-author strong {
  color: var(--text-primary);
  font-weight: 700;
}

.testimonial-author span {
  color: var(--text-secondary);
  font-size: 14px;
}

.contact {
  padding: 96px 0;
  background: var(--bg-white);
}

.contact-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 64px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.contact-item h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}

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

.contact-item a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
}

.contact-item a:hover {
  text-decoration: underline;
}

.contact-form {
  background: var(--bg-light);
  padding: 40px;
  border-radius: 12px;
}

.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border-color);
  border-radius: 8px;
  font-size: 16px;
  font-family: inherit;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
}

.footer {
  background: var(--secondary-color);
  color: var(--bg-white);
  padding: 64px 0 24px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 48px;
  margin-bottom: 48px;
}

.footer-section h4 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer-section p {
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.6;
  font-size: 14px;
}

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

.footer-section ul li {
  margin-bottom: 8px;
}

.footer-section ul li a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: color 0.2s;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  text-align: center;
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
}

.login-section {
  min-height: calc(100vh - 200px);
  padding: 64px 0;
  background: var(--bg-light);
  display: flex;
  align-items: center;
}

.login-container {
  max-width: 500px;
  margin: 0 auto;
  background: var(--bg-white);
  padding: 48px;
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
}

.login-header {
  text-align: center;
  margin-bottom: 32px;
}

.login-header h1 {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.login-header p {
  color: var(--text-secondary);
  line-height: 1.5;
}

.login-form {
  margin-bottom: 24px;
}

.form-options {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  font-size: 14px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}

.checkbox-label input {
  width: auto;
}

.forgot-link {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
}

.forgot-link:hover {
  text-decoration: underline;
}

.login-footer {
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}

.login-footer p {
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.login-footer a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
}

.login-footer a:hover {
  text-decoration: underline;
}

.login-switch {
  margin-top: 16px;
  font-size: 14px;
}

.login-benefits {
  margin-top: 32px;
  padding: 24px;
  background: var(--bg-light);
  border-radius: 8px;
}

.login-benefits h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.login-benefits ul {
  list-style: none;
}

.login-benefits li {
  padding: 8px 0;
  color: var(--text-secondary);
  position: relative;
  padding-left: 24px;
}

.login-benefits li:before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent-color);
  font-weight: 700;
}

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

  .hero-content h1 {
    font-size: 32px;
  }

  .hero-subtitle {
    font-size: 18px;
  }

  .section-title {
    font-size: 28px;
  }

  .steps-container {
    grid-template-columns: 1fr;
  }

  .contact-content {
    grid-template-columns: 1fr;
  }

  .login-container {
    padding: 32px 24px;
  }
}