:root {
  --color-primary: #0066cc;
  --color-secondary: #00a86b;
  --color-dark: #1a1a2e;
  --color-light: #f8f9fa;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-error: #dc3545;
  --color-success: #28a745;
  --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;
  --max-width: 1200px;
  --border-radius: 8px;
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-primary);
  color: var(--color-text);
  line-height: 1.6;
  background-color: var(--color-light);
  overflow-x: hidden;
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: white;
  padding: var(--spacing-xs) var(--spacing-sm);
  text-decoration: none;
  z-index: 100;
}

.skip-link:focus {
  top: 0;
}

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

header {
  background-color: white;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 50;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) 0;
}

.logo {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--color-primary);
  text-decoration: none;
}

nav ul {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
}

nav a {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
  padding: var(--spacing-xs);
}

nav a:hover,
nav a:focus {
  color: var(--color-primary);
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

nav a[aria-current="page"] {
  color: var(--color-primary);
  border-bottom: 2px solid var(--color-primary);
}

.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: white;
  padding: var(--spacing-xl) 0;
  text-align: center;
  min-height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
  line-height: 1.2;
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-md);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-button {
  display: inline-block;
  background-color: white;
  color: var(--color-primary);
  padding: var(--spacing-sm) var(--spacing-md);
  text-decoration: none;
  border-radius: var(--border-radius);
  font-weight: bold;
  transition: var(--transition);
  border: 2px solid white;
}

.cta-button:hover,
.cta-button:focus {
  background-color: transparent;
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

section {
  padding: var(--spacing-xl) 0;
}

section h2 {
  font-size: 2rem;
  margin-bottom: var(--spacing-md);
  text-align: center;
  color: var(--color-dark);
}

.company-overview {
  background-color: white;
}

.mission-statement {
  max-width: 800px;
  margin: 0 auto var(--spacing-xl);
  text-align: center;
}

.mission-statement h3 {
  font-size: 1.75rem;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.mission-statement p {
  font-size: 1.125rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

.core-values {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.value-card {
  background-color: var(--color-light);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  text-align: center;
  transition: var(--transition);
}

.value-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.value-card h4 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
  font-size: 1.25rem;
}

.value-card p {
  color: var(--color-text-light);
  font-size: 0.95rem;
}

.lagos-expertise {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: white;
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-xl);
  text-align: center;
}

.lagos-expertise h3 {
  font-size: 1.75rem;
  margin-bottom: var(--spacing-sm);
}

.lagos-expertise p {
  font-size: 1.125rem;
  line-height: 1.8;
  max-width: 700px;
  margin: 0 auto;
}

.company-history {
  margin-bottom: var(--spacing-xl);
}

.company-history h3 {
  font-size: 1.75rem;
  color: var(--color-dark);
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding-left: var(--spacing-md);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--color-primary);
}

.timeline-item {
  position: relative;
  margin-bottom: var(--spacing-lg);
  padding-left: var(--spacing-lg);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -8px;
  top: 0;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 3px solid white;
  box-shadow: 0 0 0 3px var(--color-primary);
}

.timeline-year {
  font-size: 1.25rem;
  font-weight: bold;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.timeline-content {
  color: var(--color-text-light);
}

.team-showcase {
  margin-bottom: var(--spacing-xl);
}

.team-showcase h3 {
  font-size: 1.75rem;
  color: var(--color-dark);
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

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

.team-member {
  background-color: var(--color-light);
  border-radius: var(--border-radius);
  overflow: hidden;
  transition: var(--transition);
  text-align: center;
}

.team-member:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.team-member-photo {
  width: 100%;
  height: 280px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 4rem;
  font-weight: bold;
}

.team-member-info {
  padding: var(--spacing-md);
}

.team-member-name {
  font-size: 1.25rem;
  font-weight: bold;
  color: var(--color-dark);
  margin-bottom: var(--spacing-xs);
}

.team-member-role {
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.team-member-credentials {
  color: var(--color-text-light);
  font-size: 0.95rem;
  line-height: 1.6;
}

.trust-indicators {
  background-color: var(--color-light);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-xl);
}

.trust-indicators h3 {
  font-size: 1.75rem;
  color: var(--color-dark);
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

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

.indicator {
  padding: var(--spacing-md);
}

.indicator-value {
  font-size: 2.5rem;
  font-weight: bold;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.indicator-label {
  color: var(--color-text-light);
  font-size: 1rem;
}

.testimonials {
  margin-bottom: var(--spacing-xl);
}

.testimonials h3 {
  font-size: 1.75rem;
  color: var(--color-dark);
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
}

.testimonial-card {
  background-color: white;
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  border-left: 4px solid var(--color-primary);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.testimonial-text {
  color: var(--color-text-light);
  font-style: italic;
  margin-bottom: var(--spacing-sm);
  line-height: 1.8;
}

.testimonial-author {
  font-weight: bold;
  color: var(--color-dark);
}

.testimonial-company {
  color: var(--color-primary);
  font-size: 0.9rem;
}

.about-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
  font-size: 1.125rem;
  color: var(--color-text-light);
}

.services {
  background-color: white;
}

.services-intro {
  max-width: 800px;
  margin: 0 auto var(--spacing-lg);
  text-align: center;
  color: var(--color-text-light);
  font-size: 1.125rem;
}

.service-categories {
  margin-top: var(--spacing-lg);
}

.service-category {
  margin-bottom: var(--spacing-xl);
}

.service-category-header {
  text-align: center;
  margin-bottom: var(--spacing-md);
}

.service-category-header h3 {
  font-size: 1.75rem;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.service-category-description {
  color: var(--color-text-light);
  font-size: 1rem;
  max-width: 700px;
  margin: 0 auto;
}

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

.service-card {
  background-color: var(--color-light);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  text-align: center;
  transition: var(--transition);
  border: 2px solid transparent;
}

.service-card:hover,
.service-card:focus-within {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
  border-color: var(--color-primary);
}

.service-card h4 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
  font-size: 1.25rem;
}

.service-card p {
  color: var(--color-text-light);
  margin-bottom: var(--spacing-sm);
  line-height: 1.6;
}

.service-benefits {
  margin-top: var(--spacing-sm);
  text-align: left;
}

.service-benefits h5 {
  font-size: 0.95rem;
  color: var(--color-dark);
  margin-bottom: var(--spacing-xs);
  font-weight: 600;
}

.service-benefits ul {
  list-style: none;
  padding: 0;
}

.service-benefits li {
  color: var(--color-text-light);
  font-size: 0.9rem;
  padding-left: 1.5rem;
  position: relative;
  margin-bottom: 0.25rem;
}

.service-benefits li::before {
  content: '\2713';
  position: absolute;
  left: 0;
  color: var(--color-secondary);
  font-weight: bold;
}

.service-technologies {
  margin-top: var(--spacing-sm);
  padding-top: var(--spacing-sm);
  border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.service-technologies h5 {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-xs);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
}

.tech-tag {
  background-color: white;
  color: var(--color-primary);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
  border: 1px solid var(--color-primary);
}

.contact {
  background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-primary) 100%);
  color: white;
}

.contact h2 {
  color: white;
}

.contact-content {
  max-width: 600px;
  margin: 0 auto;
}

.contact-intro {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.contact-form-wrapper {
  background-color: white;
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.contact-form {
  color: var(--color-text);
}

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

.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 600;
  color: var(--color-dark);
}

.form-group label .required {
  color: var(--color-error);
  margin-left: 0.25rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-sm);
  border: 2px solid var(--color-light);
  border-radius: var(--border-radius);
  font-family: var(--font-primary);
  font-size: 1rem;
  transition: var(--transition);
  background-color: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.form-group input:invalid:not(:placeholder-shown),
.form-group select:invalid:not(:placeholder-shown),
.form-group textarea:invalid:not(:placeholder-shown) {
  border-color: var(--color-error);
}

.form-group input:valid:not(:placeholder-shown),
.form-group select:valid:not(:placeholder-shown),
.form-group textarea:valid:not(:placeholder-shown) {
  border-color: var(--color-success);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

.form-group .hint {
  display: block;
  margin-top: var(--spacing-xs);
  font-size: 0.875rem;
  color: var(--color-text-light);
}

.form-group .error-message {
  display: none;
  margin-top: var(--spacing-xs);
  font-size: 0.875rem;
  color: var(--color-error);
}

.form-group input:invalid:not(:placeholder-shown) ~ .error-message,
.form-group select:invalid:not(:placeholder-shown) ~ .error-message,
.form-group textarea:invalid:not(:placeholder-shown) ~ .error-message {
  display: block;
}

.submit-button {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--color-primary);
  color: white;
  border: none;
  border-radius: var(--border-radius);
  font-size: 1.125rem;
  font-weight: bold;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
}

.submit-button:hover:not(:disabled) {
  background-color: var(--color-secondary);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.submit-button:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.submit-button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.submit-button .button-text {
  display: inline-block;
}

.submit-button .button-spinner {
  display: none;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-left: var(--spacing-xs);
  vertical-align: middle;
}

.submit-button[aria-busy="true"] .button-spinner {
  display: inline-block;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.form-message {
  margin-top: var(--spacing-md);
  padding: var(--spacing-sm);
  border-radius: var(--border-radius);
  display: none;
  text-align: center;
  font-weight: 500;
}

.form-message.success {
  display: block;
  background-color: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
}

.form-message.error {
  display: block;
  background-color: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
}

.contact-info {
  margin-top: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  text-align: center;
}

.contact-item {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  font-size: 1.125rem;
}

.contact-item a {
  color: white;
  text-decoration: none;
  transition: var(--transition);
}

.contact-item a:hover,
.contact-item a:focus {
  text-decoration: underline;
  opacity: 0.8;
}

footer {
  background-color: var(--color-dark);
  color: white;
  padding: var(--spacing-md) 0;
  text-align: center;
}

footer p {
  margin-bottom: var(--spacing-xs);
}

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

footer a:hover,
footer a:focus {
  text-decoration: underline;
}

@media (max-width: 768px) {
  nav ul {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .hero p {
    font-size: 1rem;
  }
  
  section h2 {
    font-size: 1.75rem;
  }
  
  .service-category-header h3 {
    font-size: 1.5rem;
  }
  
  .services-grid {
    grid-template-columns: 1fr;
  }
  
  .timeline {
    padding-left: var(--spacing-sm);
  }
  
  .timeline-item {
    padding-left: var(--spacing-md);
  }
  
  .contact-form-wrapper {
    padding: var(--spacing-md);
  }
}

@media (max-width: 320px) {
  html {
    font-size: 14px;
  }
  
  .hero h1 {
    font-size: 1.75rem;
  }
  
  nav {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
}

@media (min-width: 1024px) {
  .hero h1 {
    font-size: 3rem;
  }
  
  .services-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .team-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}