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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #f5f5f5;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Navbar */
.navbar {
  background-color: #2c3e50;
  color: white;
  padding: 1rem 0;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

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

.logo {
  font-size: 1.5rem;
  font-weight: bold;
  color: white;
  text-decoration: none;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-links a {
  color: white;
  text-decoration: none;
  transition: opacity 0.3s;
}

.nav-links a:hover {
  opacity: 0.8;
}

.logout-form {
  display: inline;
  margin: 0;
}

.btn-logout {
  background: transparent;
  border: 1px solid white;
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  cursor: pointer;
  font-size: 1rem;
  font-family: inherit;
  transition: background-color 0.3s, color 0.3s;
}

.btn-logout:hover {
  background-color: white;
  color: #2c3e50;
}

/* Main Content */
main {
  padding: 2rem 0;
  min-height: calc(100vh - 200px);
}

h1 {
  font-size: 2rem;
  margin-bottom: 1rem;
  color: #2c3e50;
}

h2 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: #34495e;
}

.subtitle {
  font-size: 1.1rem;
  color: #7f8c8d;
  margin-bottom: 2rem;
}

/* Catalog Grid */
.catalog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.catalog-card {
  background: white;
  border-radius: 8px;
  padding: 2rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  transition: transform 0.3s, box-shadow 0.3s;
}

.catalog-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.catalog-card h2 {
  margin-bottom: 0.5rem;
  font-size: 1.3rem;
}

.catalog-card p {
  color: #7f8c8d;
  margin-bottom: 1.5rem;
}

.card-actions {
  display: flex;
  gap: 1rem;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 4px;
  text-decoration: none;
  cursor: pointer;
  font-size: 1rem;
  transition: background-color 0.3s;
}

.btn-primary {
  background-color: #3498db;
  color: white;
}

.btn-primary:hover {
  background-color: #2980b9;
}

.btn-secondary {
  background-color: #95a5a6;
  color: white;
}

.btn-secondary:hover {
  background-color: #7f8c8d;
}

.btn-danger {
  background-color: #e74c3c;
  color: white;
}

.btn-danger:hover {
  background-color: #c0392b;
}

/* Forms */
.id-form {
  background: white;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.form-section {
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid #ecf0f1;
}

.form-section:last-of-type {
  border-bottom: none;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: #2c3e50;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 1rem;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: #3498db;
}

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

.form-group.checkbox {
  display: flex;
  align-items: center;
}

.form-group.checkbox label {
  display: flex;
  align-items: center;
  margin-bottom: 0;
}

.form-group.checkbox input {
  width: auto;
  margin-right: 0.5rem;
}

.form-actions {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
}

/* ID Display */
.id-display {
  background: white;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  margin-bottom: 2rem;
}

.id-info {
  margin-bottom: 2rem;
}

.id-info p {
  margin-bottom: 0.5rem;
}

.id-image {
  text-align: center;
}

.id-image img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Stub Notice */
.stub-notice {
  background-color: #fff3cd;
  border: 1px solid #ffc107;
  border-radius: 4px;
  padding: 1rem;
  margin-bottom: 2rem;
  color: #856404;
}

/* Chat Interface */
.chat-interface {
  background: white;
  border-radius: 8px;
  padding: 2rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.chat-messages {
  height: 400px;
  overflow-y: auto;
  border: 1px solid #ddd;
  border-radius: 4px;
  padding: 1rem;
  margin-bottom: 1rem;
}

.message {
  margin-bottom: 1rem;
}

.chat-input {
  display: flex;
  gap: 1rem;
}

.chat-input input {
  flex: 1;
  padding: 0.75rem;
  border: 1px solid #ddd;
  border-radius: 4px;
}

/* Login Form */
.login-form {
  max-width: 400px;
  margin: 0 auto;
  background: white;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 3rem;
  background: white;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.empty-state code {
  background-color: #f8f9fa;
  padding: 0.25rem 0.5rem;
  border-radius: 3px;
  font-family: monospace;
}

/* Dashboard */
.dashboard-header {
  margin-bottom: 2rem;
}

.welcome-text {
  color: #7f8c8d;
  margin-top: 0.5rem;
}

.dashboard-stats {
  margin-bottom: 2rem;
}

.stat-card {
  background: white;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  text-align: center;
}

.stat-number {
  font-size: 3rem;
  font-weight: bold;
  color: #3498db;
}

.stat-label {
  color: #7f8c8d;
  margin-top: 0.5rem;
}

.dashboard-actions {
  margin-bottom: 2rem;
}

.action-buttons {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}

.action-buttons .icon {
  margin-right: 0.5rem;
}

.dashboard-section {
  margin-bottom: 2rem;
}

.ids-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: 1rem;
}

.id-card {
  background: white;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  transition: transform 0.3s, box-shadow 0.3s;
}

.id-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.id-card .id-image {
  background: #f8f9fa;
  padding: 1rem;
  text-align: center;
  border-bottom: 1px solid #ecf0f1;
}

.id-card .id-image img {
  max-width: 200px;
  height: auto;
  border-radius: 4px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.id-card .id-details {
  padding: 1.5rem;
}

.id-card .id-details h3 {
  margin: 0 0 0.5rem 0;
  font-size: 1.2rem;
  color: #2c3e50;
}

.id-card .id-type {
  color: #7f8c8d;
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

.id-card .id-date {
  color: #95a5a6;
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

.id-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
}

.btn-outline {
  background: transparent;
  border: 2px solid #3498db;
  color: #3498db;
}

.btn-outline:hover {
  background-color: #3498db;
  color: white;
}

/* Opacity Slider Control */
.opacity-control {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 0.5rem;
}

.opacity-control input[type="range"] {
  flex: 1;
  height: 6px;
  background: #ddd;
  border-radius: 3px;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.opacity-control input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  background: #3498db;
  border-radius: 50%;
  cursor: pointer;
  transition: background-color 0.3s;
}

.opacity-control input[type="range"]::-webkit-slider-thumb:hover {
  background: #2980b9;
}

.opacity-control input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  background: #3498db;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  transition: background-color 0.3s;
}

.opacity-control input[type="range"]::-moz-range-thumb:hover {
  background: #2980b9;
}

.opacity-value {
  min-width: 50px;
  text-align: right;
  font-weight: 500;
  color: #2c3e50;
  font-size: 0.95rem;
}

/* Footer */
.footer {
  background-color: #2c3e50;
  color: white;
  padding: 2rem 0;
  text-align: center;
  margin-top: 3rem;
}