body {
  font-family: "Roboto", sans-serif;
  background-color: #f8f9fa;
}

.container {
  max-width: 600px;
  margin-top: 50px;
  padding: 40px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  background-color: #fff;
  border-radius: 12px;
}

@media (max-width: 576px) {
  .container {
    margin-top: 20px;
    padding: 20px;
  }
}

h2 {
  text-align: center;
  margin-bottom: 40px;
  color: #333;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
}

@media (max-width: 576px) {
  h2 {
    font-size: 24px;
    margin-bottom: 20px;
  }
}

.form-group label {
  font-weight: 500;
  color: #555;
  margin-bottom: 10px;
  display: block;
}

.form-control {
  border-radius: 8px;
  box-shadow: none;
  border-color: #ddd;
}

.form-control:focus {
  border-color: #007bff;
  box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

.btn {
  width: 100%;
  margin-top: 20px;
  border-radius: 8px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: all 0.3s ease;
}

.btn-primary {
  background-color: #007bff;
  border-color: #007bff;
}

.btn-primary:hover {
  background-color: #0056b3;
  border-color: #0056b3;
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(0, 123, 255, 0.4);
}

.btn-secondary {
  background-color: #6c757d;
  border-color: #6c757d;
}

.btn-secondary:hover {
  background-color: #5a6268;
  border-color: #545b62;
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(108, 117, 125, 0.4);
}

#notificationModal .modal-content {
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

#notificationModal .modal-header {
  background-color: #007bff;
  color: #fff;
  border-top-left-radius: 12px;
  border-top-right-radius: 12px;
}

#notificationModal .modal-title {
  font-weight: 500;
}

#notificationModal .modal-footer {
  border-top: none;
}

#captcha-container {
  width: 100%;
  max-width: 300px;
  height: 50px;
  margin: 15px 0;
  position: relative;
  border: 1px solid #ccc;
  border-radius: 4px;
  background: #f5f5f5;
  overflow: hidden;
}

#captcha-bg {
  width: 100%;
  height: 100%;
  background: url("../images/captcha_bg.jpg") no-repeat center center;
  background-size: cover;
}

#captcha-piece {
  width: 50px;
  height: 50px;
  position: absolute;
  top: 0;
  left: 0;
  background: url("../images/captcha_piece.png") no-repeat center center;
  background-size: contain;
  cursor: pointer;
}