/* Container chính */
.register-container {
  max-width: 400px;
  margin: 40px auto;
  padding: 25px 30px;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

/* Tiêu đề */
.register-container h2 {
  text-align: center;
  margin-bottom: 20px;
  color: #333;
  font-weight: 600;
}

/* Thông báo lỗi */
.error-message {
  background: #ffe5e5;
  border: 1px solid #ffb3b3;
  color: #c0392b;
  padding: 10px;
  margin-bottom: 15px;
  border-radius: 6px;
  font-size: 14px;
}

/* Form group */
.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-weight: 500;
  color: #444;
  font-size: 14px;
}

/* Input */
.form-group input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid #ccc;
  border-radius: 8px;
  font-size: 14px;
  transition: 0.3s;
}

.form-group input:focus {
  border-color: #3498db;
  box-shadow: 0 0 6px rgba(52,152,219,0.3);
  outline: none;
}

/* Password wrapper */
.password-wrapper {
  position: relative;
}

.password-wrapper .toggle-password {
  position: absolute;
  top: 50%;
  right: 12px;
  transform: translateY(-50%);
  cursor: pointer;
  font-size: 16px;
  color: #666;
  transition: 0.3s;
}

.password-wrapper .toggle-password:hover {
  color: #3498db;
}

/* Nút Đăng ký */
.btn {
  width: 100%;
  background: #3498db;
  color: #fff;
  padding: 12px;
  border: none;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: 0.3s;
}

.btn:hover {
  background: #2980b9;
}

/* Link đăng nhập */
.register-container p {
  margin-top: 15px;
  text-align: center;
  font-size: 14px;
  color: #555;
}

.register-container p a {
  color: #3498db;
  text-decoration: none;
  font-weight: 500;
}

.register-container p a:hover {
  text-decoration: underline;
}