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

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

.container {
  width: 100%;
  max-width: 420px;
}

.card {
  background: white;
  border-radius: 16px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  padding: 40px;
}

.logo {
  text-align: center;
  margin-bottom: 30px;
}

.logo h1 {
  font-size: 28px;
  color: #333;
  margin-bottom: 8px;
}

.logo p {
  color: #666;
  font-size: 14px;
}

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

.form-group label {
  display: block;
  margin-bottom: 8px;
  color: #374151;
  font-weight: 500;
  font-size: 14px;
}

.form-group input {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid #e5e7eb;
  border-radius: 10px;
  font-size: 16px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

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

.form-group input.error {
  border-color: #ef4444;
}

.error-message {
  color: #ef4444;
  font-size: 13px;
  margin-top: 6px;
}

.checkbox-group {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 24px;
}

.checkbox-group input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
}

.checkbox-group label {
  color: #4b5563;
  font-size: 14px;
  cursor: pointer;
}

.btn {
  width: 100%;
  padding: 14px;
  border: none;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
}

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

.btn-danger {
  background: #ef4444;
  color: white;
}

.btn-danger:hover {
  background: #dc2626;
}

.ip-info {
  background: #f3f4f6;
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 24px;
  text-align: center;
}

.ip-info .label {
  color: #6b7280;
  font-size: 13px;
  margin-bottom: 4px;
}

.ip-info .ip {
  color: #1f2937;
  font-size: 18px;
  font-weight: 600;
  font-family: 'Courier New', monospace;
}

.alert {
  padding: 14px 16px;
  border-radius: 10px;
  margin-bottom: 20px;
  font-size: 14px;
}

.alert-success {
  background: #d1fae5;
  color: #065f46;
  border: 1px solid #a7f3d0;
}

.alert-error {
  background: #fee2e2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

.success-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
}

.success-icon svg {
  width: 40px;
  height: 40px;
  color: white;
}

.info-list {
  background: #f9fafb;
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 24px;
}

.info-item {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid #e5e7eb;
}

.info-item:last-child {
  border-bottom: none;
}

.info-item .label {
  color: #6b7280;
  font-size: 14px;
}

.info-item .value {
  color: #1f2937;
  font-weight: 500;
  font-size: 14px;
}

.footer {
  text-align: center;
  margin-top: 24px;
  color: rgba(255, 255, 255, 0.8);
  font-size: 13px;
}