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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  line-height: 1.6;
}

.container {
  background: white;
  border-radius: 16px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  padding: 40px;
  width: 100%;
  max-width: 480px;
  position: relative;
  overflow: hidden;
}

.step {
  display: none;
  animation: fadeIn 0.5s ease-in-out;
}

.step.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

h1 {
  text-align: center;
  color: #333;
  margin-bottom: 30px;
  font-size: 24px;
  font-weight: 600;
}

.form-group {
  margin-bottom: 20px;
}

label {
  display: block;
  margin-bottom: 8px;
  color: #555;
  font-weight: 500;
}

input[type="text"],
input[type="email"],
input[type="tel"] {
  width: 100%;
  padding: 14px 16px;
  border: 2px solid #e1e5e9;
  border-radius: 8px;
  font-size: 16px;
  transition: all 0.3s ease;
  background: #fafbfc;
}

input:focus {
  outline: none;
  border-color: #667eea;
  background: white;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

input.error {
  border-color: #e74c3c;
  background: #fdf2f2;
}

.error-message {
  color: #e74c3c;
  font-size: 14px;
  margin-top: 5px;
  display: none;
}

.error-message.show {
  display: block;
}

.btn {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border: none;
  padding: 14px 24px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  width: 100%;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.btn:active {
  transform: translateY(0);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.btn-secondary {
  background: #6c757d;
  margin-top: 15px;
}

.btn-secondary:hover {
  box-shadow: 0 8px 25px rgba(108, 117, 125, 0.4);
}

.pix-code {
  background: #f8f9fa;
  border: 2px dashed #dee2e6;
  border-radius: 8px;
  padding: 20px;
  margin: 20px 0;
  text-align: center;
}

.pix-string {
  font-family: 'Courier New', monospace;
  font-size: 14px;
  word-break: break-all;
  background: white;
  padding: 12px;
  border-radius: 6px;
  border: 1px solid #e9ecef;
  margin: 10px 0;
}

.qr-container {
  display: flex;
  justify-content: center;
  margin: 20px 0;
  padding: 20px;
  background: white;
  border-radius: 8px;
  border: 1px solid #e9ecef;
}

.toast {
  position: fixed;
  top: 20px;
  right: 20px;
  background: #28a745;
  color: white;
  padding: 12px 20px;
  border-radius: 6px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  transform: translateX(100%);
  transition: transform 0.3s ease;
  z-index: 1000;
}

.toast.show {
  transform: translateX(0);
}

.toast.error {
  background: #dc3545;
}

.whatsapp-info {
  background: #e8f5e8;
  border: 1px solid #28a745;
  border-radius: 8px;
  padding: 20px;
  margin: 20px 0;
  text-align: center;
}

.whatsapp-icon {
  width: 24px;
  height: 24px;
  fill: #25d366;
  margin-right: 8px;
  vertical-align: middle;
}

.copy-icon,
.qr-icon {
  width: 20px;
  height: 20px;
  fill: currentColor;
  margin-right: 8px;
  vertical-align: middle;
}

.progress-bar {
  width: 100%;
  height: 4px;
  background: #e9ecef;
  border-radius: 2px;
  margin-bottom: 30px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 2px;
  transition: width 0.5s ease;
}

@media (max-width: 480px) {
  .container {
    padding: 30px 20px;
    margin: 10px;
  }

  h1 {
    font-size: 20px;
  }
}