.scan-form {
  margin: 2rem 0;
}

.scan-input-container {
  display: flex;
  align-items: stretch;
  gap: 8px;
  flex-wrap: nowrap;
}

.scan-input-container .form-control {
  flex: 1;
  border-radius: 20px;
  border: 2px solid #e9ecef;
  padding: 15px 20px;
  font-size: 1rem;
  transition: all 0.3s ease;
  background: rgba(255, 255, 255, 0.9);
  min-width: 0;
}

.scan-input-container .form-control:focus {
  border-color: #667eea;
  box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
  background: white;
}

.scan-input-container .btn {
  border-radius: 20px;
  background: linear-gradient(135deg, #667eea, #764ba2);
  border: none;
  padding: 15px 30px;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.3s ease;
  min-width: 120px;
  color: white;
  flex-shrink: 0;
  width: auto !important;
  margin-bottom: 0 !important;
}

.scan-input-container .btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
}

.scan-input-container .btn:active {
  transform: translateY(0);
}

@media (max-width: 768px) {
  .scan-input-container {
    flex-direction: column;
    gap: 0;
  }
  
  .scan-input-container .form-control {
    width: 100%;
    box-sizing: border-box;
    margin-bottom: 16px;
  }
  
  .scan-input-container .btn {
    width: 100% !important;
    box-sizing: border-box;
    margin-bottom: 0 !important;
  }
}

.form-control {
  flex: 1;
}

.btn-loading {
  opacity: 0.7;
  pointer-events: none;
}

.btn-text {
  display: inline-block;
}

.btn-loading .btn-text {
  display: none;
}

.btn-loading::after {
  content: '';
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid #ffffff;
  border-radius: 50%;
  border-top-color: transparent;
  animation: spin 1s ease-in-out infinite;
}

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

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin: 2rem 0;
}

.feature-item {
  background: rgba(255, 255, 255, 0.8);
  border-radius: 15px;
  padding: 20px;
  text-align: center;
  transition: all 0.3s ease;
  border: 1px solid rgba(102, 126, 234, 0.1);
}

.feature-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  display: block;
}

.feature-text {
  color: #555;
  font-size: 0.9rem;
  line-height: 1.5;
}

.demo-info {
  background: rgba(102, 126, 234, 0.1);
  border-radius: 15px;
  border-left: 4px solid #667eea;
  padding: 20px;
  margin: 2rem 0;
}

.demo-info h6 {
  color: #667eea;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.demo-info p {
  font-size: 0.9rem;
  color: #666;
  margin-bottom: 0.5rem;
}

.demo-info code {
  background: rgba(255,255,255,0.8);
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 0.85rem;
  word-break: break-all;
}

.demo-info .btn {
  padding: 8px 12px;
  font-size: 0.8rem;
}

@media (max-width: 768px) {
  .features-grid {
    grid-template-columns: 1fr;
    gap: 15px;
  }
  .feature-item {
    padding: 15px;
  }
  .demo-info {
    padding: 15px !important;
  }
  .demo-info .d-flex {
    flex-direction: column;
    align-items: stretch !important;
    gap: 8px !important;
  }
  .demo-info code {
    text-align: center;
    font-size: 0.75rem !important;
  }
  .demo-info .btn {
    width: 100%;
    margin-top: 5px;
  }
}

@media (max-width: 480px) {
  .demo-info {
    padding: 12px !important;
  }
  .demo-info code {
    font-size: 0.7rem !important;
    padding: 3px 6px !important;
  }
  .demo-info .btn {
    padding: 8px 12px;
    font-size: 0.8rem;
  }
}