.register-container {
    max-width: 400px;
    margin: 2rem auto;
    padding: 2rem;
    background-color: #f3f7fa; /* 背景颜色 */
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

.register-container h2 {
    text-align: center;
    margin-bottom: 1.5rem;
    color: #333;
}

.form-group {
    margin-bottom: 1.5rem;
    position: relative;
}

.form-group input {
    padding: 0.75rem;
    width: 100%;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
    box-sizing: border-box;
}

.form-group input::placeholder {
    color: #999;
    font-style: italic;
}

.form-group input:focus {
    outline: none;
    border-color: #4a76a8;
    box-shadow: 0 0 5px rgba(74, 118, 168, 0.3);
}

.form-group input[readonly] {
    background-color: #f5f5f5;
    color: #666;
    cursor: not-allowed;
}

.password-strength {
    margin-top: 0.5rem;
    font-size: 0.85rem;
    min-height: 1.2rem;
    position: relative;
}

.password-strength.weak {
    color: #ff4444;
}

.password-strength.medium {
    color: #ff8800;
}

.password-strength.strong {
    color: #4CAF50;
}

.btn-register:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}

.btn-register:disabled:hover {
    background-color: #ccc;
}

.toggle-password {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.2rem;
    color: #666;
    padding: 5px;
    border-radius: 3px;
    transition: color 0.3s;
}

.toggle-password:hover {
    color: #4a76a8;
    background-color: rgba(74, 118, 168, 0.1);
}

.btn-register {
    width: 100%;
    padding: 0.75rem;
    background-color: #4a76a8;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    margin-top: 2rem;
}

.btn-register:hover {
    background-color: #3a6690;
}

.login-link {
    text-align: center;
    margin-top: 1.5rem;
    color: #666;
}

.login-link a {
    color: #4a76a8;
    text-decoration: none;
}

.login-link a:hover {
    text-decoration: underline;
}

@media (max-width: 480px) {
    .register-container {
        margin: 1rem;
        padding: 1.5rem;
    }
}